@font-face{font-family:Literata Variable;font-style:normal;font-display:swap;font-weight:200 900;src:url(/assets/literata-cyrillic-ext-wght-normal-CGKlZYBf.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Literata Variable;font-style:normal;font-display:swap;font-weight:200 900;src:url(/assets/literata-cyrillic-wght-normal-DLqwHbi6.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Literata Variable;font-style:normal;font-display:swap;font-weight:200 900;src:url(/assets/literata-greek-ext-wght-normal-e3e57Shi.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:Literata Variable;font-style:normal;font-display:swap;font-weight:200 900;src:url(/assets/literata-greek-wght-normal-CO1l-giJ.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Literata Variable;font-style:normal;font-display:swap;font-weight:200 900;src:url(/assets/literata-vietnamese-wght-normal-LcSrhZ7T.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Literata Variable;font-style:normal;font-display:swap;font-weight:200 900;src:url(/assets/literata-latin-ext-wght-normal-BnEbWgdZ.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Literata Variable;font-style:normal;font-display:swap;font-weight:200 900;src:url(/assets/literata-latin-wght-normal-DLxlUchJ.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Literata Variable;font-style:italic;font-display:swap;font-weight:200 900;src:url(/assets/literata-cyrillic-ext-wght-italic-DrMGjC4f.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Literata Variable;font-style:italic;font-display:swap;font-weight:200 900;src:url(/assets/literata-cyrillic-wght-italic-C2hF6zFe.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Literata Variable;font-style:italic;font-display:swap;font-weight:200 900;src:url(/assets/literata-greek-ext-wght-italic-f6xT_0ee.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:Literata Variable;font-style:italic;font-display:swap;font-weight:200 900;src:url(/assets/literata-greek-wght-italic-9BAkQpca.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Literata Variable;font-style:italic;font-display:swap;font-weight:200 900;src:url(/assets/literata-vietnamese-wght-italic-LyOFdRXZ.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Literata Variable;font-style:italic;font-display:swap;font-weight:200 900;src:url(/assets/literata-latin-ext-wght-italic-CC1SwlwQ.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Literata Variable;font-style:italic;font-display:swap;font-weight:200 900;src:url(/assets/literata-latin-wght-italic-Bm_GJfSc.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/inter-cyrillic-ext-wght-normal-BOeWTOD4.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/inter-cyrillic-wght-normal-DqGufNeO.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/inter-greek-ext-wght-normal-DlzME5K_.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/inter-greek-wght-normal-CkhJZR-_.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/inter-vietnamese-wght-normal-CBcvBZtf.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/inter-latin-ext-wght-normal-DO1Apj_S.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/inter-latin-wght-normal-Dx4kXJAl.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--bg:#f6f1e7;--bg-2:#efe8da;--surface:#fffdf8;--surface-2:#faf6ee;--ink:#1e2230;--ink-2:#464c5c;--muted:#7a7d88;--line:#e5ddcd;--line-2:#d8cfbd;--accent:#b5602a;--accent-ink:#8f4a1f;--accent-soft:#f4e4d3;--accent-wash:#fbf1e6;--good:#3f7d5c;--good-soft:#e3efe7;--warn:#a7731a;--warn-soft:#f7ecd3;--bad:#b2453b;--bad-soft:#f6e1dd;--night:#1e2230;--on-night:#f3ede1;--shadow:0 1px 2px #1e22300f, 0 6px 24px #1e223012;--shadow-lg:0 10px 40px #1e223029;--radius:18px;--radius-sm:12px;--serif:"Literata Variable", "Literata", Georgia, "Times New Roman", serif;--sans:"Inter Variable", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--read-size:19px;--tabbar:64px;--safe-bottom:env(safe-area-inset-bottom,0px);--safe-top:env(safe-area-inset-top,0px);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=sepia]{--bg:#efe4cc;--bg-2:#e7dabd;--surface:#f8efdc;--surface-2:#f3e8d0;--ink:#3a2e1f;--ink-2:#5b4a35;--muted:#86745a;--line:#ddcca9;--line-2:#cfbc95;--accent-soft:#ecd5b8;--accent-wash:#f3e3c9}:root[data-theme=dark]{--bg:#121318;--bg-2:#17181e;--surface:#1b1d24;--surface-2:#20232b;--ink:#ece6da;--ink-2:#c3bdb1;--muted:#8d897e;--line:#2b2e37;--line-2:#393c46;--accent:#e39a5c;--accent-ink:#f0b483;--accent-soft:#3a2a1e;--accent-wash:#261d16;--good:#79c29a;--good-soft:#1d2d24;--warn:#e0b45c;--warn-soft:#2f2716;--bad:#ec8a80;--bad-soft:#36201e;--night:#0b0c10;--on-night:#ece6da;--shadow:0 1px 2px #0006, 0 6px 24px #0000004d;--shadow-lg:0 10px 40px #00000080;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}@media (prefers-color-scheme:dark){:root:not([data-theme]){--bg:#121318;--bg-2:#17181e;--surface:#1b1d24;--surface-2:#20232b;--ink:#ece6da;--ink-2:#c3bdb1;--muted:#8d897e;--line:#2b2e37;--line-2:#393c46;--accent:#e39a5c;--accent-ink:#f0b483;--accent-soft:#3a2a1e;--accent-wash:#261d16;--good:#79c29a;--good-soft:#1d2d24;--warn:#e0b45c;--warn-soft:#2f2716;--bad:#ec8a80;--bad-soft:#36201e;--night:#0b0c10;--on-night:#ece6da;--shadow:0 1px 2px #0006, 0 6px 24px #0000004d;--shadow-lg:0 10px 40px #00000080;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;font-size:15px;line-height:1.5;overflow-x:hidden}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}a{color:inherit}img{max-width:100%;display:block}h1,h2,h3,h4{margin:0;line-height:1.2}p{margin:0}::selection{background:var(--accent-soft)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}.serif{font-family:var(--serif)}.muted{color:var(--muted)}.small{font-size:13px}.tiny{font-size:12px}.nowrap{white-space:nowrap}.row{align-items:center;gap:10px;display:flex}.row.wrap{flex-wrap:wrap}.spread{justify-content:space-between;align-items:center;gap:12px;display:flex}.stack{flex-direction:column;gap:12px;display:flex}.stack-lg{flex-direction:column;gap:22px;display:flex}.grow{flex:1;min-width:0}.center{text-align:center}.hide{display:none!important}.sr-only{clip:rect(0 0 0 0);width:1px;height:1px;position:absolute;overflow:hidden}.shell{min-height:100dvh}.main{padding:calc(18px + var(--safe-top)) 16px calc(var(--tabbar) + 28px + var(--safe-bottom));max-width:760px;margin:0 auto}.main.wide{max-width:1120px}.tabbar{z-index:40;height:calc(var(--tabbar) + var(--safe-bottom));padding-bottom:var(--safe-bottom);background:color-mix(in srgb, var(--surface) 88%, transparent);-webkit-backdrop-filter:saturate(1.4)blur(14px);border-top:1px solid var(--line);grid-template-columns:repeat(5,1fr);display:grid;position:fixed;bottom:0;left:0;right:0}.tab{color:var(--muted);letter-spacing:.01em;flex-direction:column;justify-content:center;align-items:center;gap:3px;font-size:11px;font-weight:550;text-decoration:none;display:flex;position:relative}.tab svg{width:23px;height:23px}.tab.active{color:var(--ink)}.tab.active:before{content:"";background:var(--accent);border-radius:0 0 3px 3px;height:2.5px;position:absolute;top:0;left:30%;right:30%}.tab .badge{background:var(--accent);color:#fff;border-radius:9px;place-items:center;min-width:17px;height:17px;padding:0 5px;font-size:10.5px;font-weight:700;display:grid;position:absolute;top:7px;left:calc(50% + 6px)}.sidebar{display:none}@media (min-width:960px){.tabbar{display:none}.sidebar{z-index:30;border-right:1px solid var(--line);background:var(--bg-2);flex-direction:column;gap:4px;width:236px;padding:26px 16px;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar .brand{margin:0 10px 26px}.side-link{color:var(--ink-2);border-radius:12px;align-items:center;gap:12px;padding:10px 12px;font-weight:550;text-decoration:none;display:flex}.side-link svg{width:20px;height:20px}.side-link:hover{background:var(--surface)}.side-link.active{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}.side-link .badge{background:var(--accent);color:#fff;border-radius:9px;margin-left:auto;padding:1px 7px;font-size:11px;font-weight:700}.sidebar .side-foot{margin-top:auto;padding:0 10px}.with-sidebar{padding-left:236px}.main{padding-top:40px;padding-bottom:60px}}.brand{align-items:center;gap:10px;text-decoration:none;display:flex}.brand svg{width:30px;height:30px}.brand b{font-family:var(--serif);letter-spacing:-.01em;font-size:22px;font-weight:650}.eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-size:12px;font-weight:650}.h1{font-family:var(--serif);letter-spacing:-.015em;font-size:30px;font-weight:640}.h2{font-family:var(--serif);letter-spacing:-.01em;font-size:22px;font-weight:620}.h3{font-size:16px;font-weight:650}.page-head{margin-bottom:22px}.page-head .h1{margin-top:4px}.section-title{justify-content:space-between;align-items:baseline;gap:12px;margin:30px 0 12px;display:flex}.section-title h2{letter-spacing:.07em;text-transform:uppercase;color:var(--muted);font-size:13px;font-weight:700}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.card.flat{box-shadow:none}.card.tight{padding:14px}.card-link{text-decoration:none;transition:transform .15s;display:block}.card-link:active{transform:scale(.99)}.list{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.list-row{border-bottom:1px solid var(--line);text-align:left;background:0 0;border-top:0;border-left:0;border-right:0;align-items:center;gap:14px;width:100%;padding:14px 16px;text-decoration:none;display:flex}.list-row:last-child{border-bottom:0}.list-row:hover{background:var(--surface-2)}.pill{background:var(--bg-2);color:var(--ink-2);border:1px solid var(--line);white-space:nowrap;border-radius:99px;align-items:center;gap:6px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-flex}.pill svg{width:13px;height:13px}.pill.accent{background:var(--accent-soft);color:var(--accent-ink);border-color:#0000}.pill.good{background:var(--good-soft);color:var(--good);border-color:#0000}.pill.warn{background:var(--warn-soft);color:var(--warn);border-color:#0000}.pill.bad{background:var(--bad-soft);color:var(--bad);border-color:#0000}.btn{border:1px solid var(--line-2);background:var(--surface);white-space:nowrap;border-radius:13px;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:0 18px;font-weight:600;text-decoration:none;transition:transform .12s,background .15s;display:inline-flex}.btn:active{transform:scale(.98)}.btn svg{width:18px;height:18px}.btn.primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}.btn.accent{background:var(--accent);color:#fff;border-color:var(--accent)}.btn.ghost{background:0 0;border-color:#0000}.btn.small{border-radius:10px;min-height:34px;padding:0 12px;font-size:13px}.btn.block{white-space:normal;text-align:center;width:100%;padding-top:8px;padding-bottom:8px;line-height:1.3}.btn:disabled{opacity:.5;cursor:default}.icon-btn{width:42px;height:42px;color:var(--ink-2);background:0 0;border:0;border-radius:12px;place-items:center;display:grid}.icon-btn:hover{background:var(--bg-2)}.icon-btn svg{width:21px;height:21px}.field{flex-direction:column;gap:6px;display:flex}.field label{color:var(--ink-2);font-size:13px;font-weight:650}.input,.textarea,.select{border:1px solid var(--line-2);background:var(--surface);border-radius:12px;outline:none;width:100%;padding:11px 13px;font-size:16px}.textarea{resize:vertical;min-height:110px;line-height:1.5}.input:focus,.textarea:focus,.select:focus{border-color:var(--accent)}.hint{color:var(--muted);font-size:13px}.seg{background:var(--bg-2);border:1px solid var(--line);border-radius:12px;gap:2px;padding:3px;display:inline-flex}.seg button{color:var(--muted);background:0 0;border:0;border-radius:9px;padding:7px 12px;font-size:13px;font-weight:600}.seg button.on{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}.toggle{background:var(--line-2);border:0;border-radius:99px;flex:none;width:46px;height:28px;transition:background .2s;position:relative}.toggle:after{content:"";background:#fff;border-radius:50%;width:22px;height:22px;transition:transform .2s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #00000040}.toggle.on{background:var(--good)}.toggle.on:after{transform:translate(18px)}.bar{background:var(--bg-2);border-radius:99px;height:8px;overflow:hidden}.bar>i{border-radius:inherit;background:var(--accent);height:100%;transition:width .5s;display:block}.bar.good>i{background:var(--good)}.empty{text-align:center;padding:40px 18px}.empty svg.art{width:92px;height:92px;margin:0 auto 18px}.empty .h2{margin-bottom:8px}.empty p{color:var(--ink-2);max-width:30rem;margin:0 auto 18px}.toast{left:50%;bottom:calc(var(--tabbar) + 18px + var(--safe-bottom));z-index:90;background:var(--night);color:var(--on-night);box-shadow:var(--shadow-lg);border-radius:14px;max-width:calc(100vw - 32px);padding:12px 18px;font-weight:550;animation:.25s rise;position:fixed;transform:translate(-50%)}@keyframes rise{0%{opacity:0;transform:translate(-50%,10px)}to{opacity:1;transform:translate(-50%)}}.skeleton{background:linear-gradient(90deg, var(--bg-2), var(--surface-2), var(--bg-2));background-size:200% 100%;border-radius:12px;animation:1.3s infinite shimmer}@keyframes shimmer{to{background-position:-200% 0}}.greet{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:20px;display:flex}.streak{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:99px;align-items:center;gap:6px;padding:7px 12px;font-weight:700;display:inline-flex}.streak svg{width:18px;height:18px;color:var(--accent)}.hero{background:var(--night);color:var(--on-night);box-shadow:var(--shadow-lg);border-radius:22px;padding:22px 20px 20px;text-decoration:none;display:block;position:relative;overflow:hidden}.hero .band{width:6px;position:absolute;inset:0 auto 0 0}.hero .eyebrow{color:color-mix(in srgb, var(--on-night) 60%, transparent)}.hero h2{font-family:var(--serif);letter-spacing:-.01em;margin:8px 0 10px;font-size:25px;font-weight:620}.hero p.kern{font-family:var(--serif);color:color-mix(in srgb, var(--on-night) 82%, transparent);font-size:16px;font-style:italic;line-height:1.55}.hero .foot{justify-content:space-between;align-items:center;gap:10px;margin-top:18px;display:flex}.hero .go{background:var(--accent);color:#fff;border-radius:12px;align-items:center;gap:8px;padding:10px 16px;font-weight:650;display:inline-flex}.hero .go svg{width:18px;height:18px}.hero .drop-art{opacity:.08;color:#fff;width:150px;height:150px;position:absolute;top:-20px;right:-24px}.plan-item{border-bottom:1px solid var(--line);align-items:center;gap:14px;padding:13px 16px;text-decoration:none;display:flex}.plan-item:last-child{border-bottom:0}.plan-item .dot{border:2px solid var(--line-2);color:#fff;border-radius:50%;flex:none;place-items:center;width:26px;height:26px;display:grid}.plan-item .dot.done{background:var(--good);border-color:var(--good)}.plan-item .dot svg{width:15px;height:15px}.plan-item .t{font-weight:600}.plan-item .s{color:var(--muted);font-size:13px}.stats{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}.stat{padding:16px}.stat .num{font-family:var(--serif);letter-spacing:-.02em;font-size:28px;font-weight:650}.stat .lbl{color:var(--muted);font-size:13px}.compare{flex-direction:column;gap:10px;margin-top:14px;display:flex}.compare .line{grid-template-columns:96px 1fr auto;align-items:center;gap:10px;font-size:13px;display:grid}.compare .bar{height:10px}.compare .bar.orig>i{background:var(--line-2)}.week{align-items:flex-end;gap:6px;height:54px;display:flex}.week .d{flex-direction:column;flex:1;align-items:center;gap:5px;display:flex}.week .col{background:var(--bg-2);border-radius:6px;width:100%;max-width:26px;height:36px;position:relative;overflow:hidden}.week .col i{background:var(--accent);border-radius:6px;position:absolute;bottom:0;left:0;right:0}.week .d span{color:var(--muted);font-size:11px}.busy{border-radius:var(--radius);background:var(--accent-wash);border:1px solid var(--accent-soft);align-items:center;gap:14px;padding:14px 16px;text-decoration:none;display:flex}.busy .still{width:36px;height:36px;color:var(--accent);flex:none}.still .drop{transform-origin:50%;animation:1.8s ease-in infinite drip}.still .drop.d2{animation-delay:.6s}.still .drop.d3{animation-delay:1.2s}@keyframes drip{0%{opacity:0;transform:translateY(-4px)}30%{opacity:1}80%{opacity:1;transform:translateY(8px)}to{opacity:0;transform:translateY(10px)}}@media (prefers-reduced-motion:reduce){.still .drop{opacity:1;animation:none}}.topic{margin-bottom:34px}.topic-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:14px;display:flex}.shelf{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 14px;display:grid}@media (min-width:640px){.shelf{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width:1000px){.shelf{grid-template-columns:repeat(5,minmax(0,1fr))}}.book{flex-direction:column;gap:9px;min-width:0;text-decoration:none;display:flex}.book .meta .t{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:14px;font-weight:650;line-height:1.3;display:-webkit-box;overflow:hidden}.book .meta .a{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:12.5px;overflow:hidden}.cover{aspect-ratio:2/3;color:#fff;background:var(--c,#333);border-radius:6px 12px 12px 6px;position:relative;overflow:hidden;box-shadow:0 1px 1px #00000014,0 8px 22px #1e22302e,inset 4px 0 #0000001f}.cover img{object-fit:cover;width:100%;height:100%}.cover .gen{flex-direction:column;justify-content:space-between;padding:14% 12% 12%;display:flex;position:absolute;inset:0}.cover .gen .ct{font-family:var(--serif);letter-spacing:-.01em;overflow-wrap:anywhere;font-size:clamp(14px,4.2vw,19px);font-weight:650;line-height:1.18}.cover .gen .ca{letter-spacing:.08em;text-transform:uppercase;opacity:.8;font-size:11px}.cover .gen .rule{opacity:.55;background:currentColor;width:34%;height:2px;margin:10px 0}.cover .pattern{aspect-ratio:1;opacity:.14;width:90%;position:absolute;inset:auto -20% -10% auto}.cover .spine{background:linear-gradient(90deg,#00000040,#ffffff14,#0000);width:7px;position:absolute;inset:0 auto 0 0}.cover .state{color:#fff;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#0f1016b8;border-radius:9px;align-items:center;gap:6px;padding:6px 8px;font-size:11.5px;font-weight:650;display:flex;position:absolute;bottom:8px;left:8px;right:8px}.cover .state svg{flex:none;width:14px;height:14px}.cover .state .bar{background:#ffffff40;flex:1;height:4px}.cover .state .bar>i{background:#fff}.cover.sm{border-radius:4px 8px 8px 4px;flex:none;width:64px}.cover.sm .gen{padding:10px 8px}.cover.sm .gen .ct{font-size:10px}.cover.sm .gen .ca,.cover.sm .gen .rule{display:none}.cover.md{flex:none;width:116px}.cover.md .gen .ct{font-size:15px}.fab{right:18px;bottom:calc(var(--tabbar) + 18px + var(--safe-bottom));z-index:45;background:var(--accent);color:#fff;height:54px;box-shadow:var(--shadow-lg);border:0;border-radius:18px;align-items:center;gap:8px;padding:0 20px 0 16px;font-weight:700;display:inline-flex;position:fixed}.fab svg{width:22px;height:22px}@media (min-width:960px){.fab{bottom:28px;right:28px}}.dropzone{border:2px dashed var(--line-2);border-radius:var(--radius);text-align:center;background:var(--surface-2);padding:26px 16px;transition:border-color .2s,background .2s}.dropzone.over{border-color:var(--accent);background:var(--accent-wash)}.dropzone svg{width:34px;height:34px;color:var(--accent);margin:0 auto 8px}.book-head{align-items:flex-end;gap:18px;margin-bottom:22px;display:flex}.book-head .h1{font-size:25px}.flow{grid-template-columns:repeat(4,1fr);gap:6px;margin:16px 0 6px;display:grid}.flow .st{color:var(--muted);flex-direction:column;gap:6px;font-size:12px;font-weight:600;display:flex}.flow .st .bar{height:6px}.flow .st.on{color:var(--ink)}.flow .st.done{color:var(--good)}.flow .st.done .bar>i{background:var(--good)}.chapter-row{border-bottom:1px solid var(--line);align-items:flex-start;gap:14px;padding:14px 16px;text-decoration:none;display:flex}.chapter-row:last-child{border-bottom:0}.chapter-row .num{font-family:var(--serif);color:var(--muted);flex:none;width:22px;padding-top:1px;font-size:15px}.chapter-row .t{font-weight:620}.chapter-row .k{color:var(--ink-2);font-size:13.5px;font-family:var(--serif);margin-top:3px;font-style:italic}.chapter-row .tags{flex-wrap:wrap;gap:6px;margin-top:7px;display:flex}.chapter-row .ok{width:22px;height:22px;color:var(--good);flex:none}.chapter-row.off{opacity:.55}.reader{background:var(--bg);min-height:100dvh}.reader-top{z-index:30;padding-top:var(--safe-top);background:color-mix(in srgb, var(--bg) 90%, transparent);-webkit-backdrop-filter:saturate(1.4)blur(12px);border-bottom:1px solid var(--line);position:sticky;top:0}.reader-top .inner{align-items:center;gap:6px;max-width:820px;margin:0 auto;padding:6px 8px;display:flex}.reader-top .where{min-width:0;color:var(--muted);white-space:nowrap;text-overflow:ellipsis;text-align:center;flex:1;font-size:13px;overflow:hidden}.reader-top .progress{background:0 0;height:3px}.reader-top .progress i{background:var(--accent);width:0;height:100%;transition:width .1s linear;display:block}.lesson{max-width:680px;padding:26px 18px calc(120px + var(--safe-bottom));font-size:var(--read-size);margin:0 auto}.lesson .read{font-family:var(--serif);line-height:1.66}.lesson-hero{margin-bottom:28px}.lesson-hero .chip-band{color:var(--ink-2);align-items:center;gap:8px;font-size:12.5px;font-weight:650;display:inline-flex}.lesson-hero .chip-band i{border-radius:3px;width:10px;height:10px;display:inline-block}.lesson-hero h1{font-family:var(--serif);letter-spacing:-.018em;margin:12px 0 18px;font-size:1.68em;font-weight:650;line-height:1.16}.kernsatz{font-family:var(--serif);color:var(--ink);border-left:3px solid var(--accent);padding:2px 0 2px 16px;font-size:1.12em;font-style:italic;line-height:1.5}.lesson-hero .facts{flex-wrap:wrap;gap:8px;margin-top:18px;display:flex}.why{color:var(--ink-2);margin:0 0 30px;font-size:.92em;line-height:1.6}.sect{margin:34px 0;scroll-margin-top:80px}.sect>.label{font-family:var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);align-items:center;gap:8px;margin-bottom:12px;font-size:12px;font-weight:700;display:flex}.sect>.label svg{width:16px;height:16px;color:var(--accent)}.speaking{background:var(--accent-wash);box-shadow:0 0 0 10px var(--accent-wash);border-radius:6px;transition:background .3s}.scene{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px;padding:24px 22px 22px;position:relative}.scene:before{content:"“";font-family:var(--serif);color:var(--accent);opacity:.35;font-size:72px;line-height:1;position:absolute;top:-18px;left:16px}.scene h3{font-family:var(--serif);margin-bottom:10px;font-size:1.05em;font-weight:650}.scene .text{font-family:var(--serif);white-space:pre-line;font-size:.97em;line-height:1.7}.principles{counter-reset:p;flex-direction:column;gap:22px;display:flex}.principle{grid-template-columns:46px 1fr;gap:6px 12px;display:grid}.principle .n{font-family:var(--serif);color:var(--accent);padding-top:2px;font-size:30px;font-weight:600;line-height:1}.principle h3{font-family:var(--serif);margin-bottom:6px;font-size:1.04em;font-weight:680;line-height:1.3}.principle .text{font-family:var(--serif);font-size:.96em;line-height:1.66}.principle .ex{color:var(--ink-2);font-size:.86em;font-family:var(--sans);margin-top:8px;line-height:1.5}.principle .ex b{color:var(--accent-ink);font-weight:650}.model{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px 18px}.model h3{font-family:var(--serif);margin-bottom:16px;font-size:1.15em}.steps{flex-direction:column;gap:16px;display:flex;position:relative}.steps:before{content:"";background:var(--line-2);width:2px;position:absolute;top:10px;bottom:10px;left:15px}.step{grid-template-columns:32px 1fr;gap:12px;display:grid;position:relative}.step .c{background:var(--ink);width:32px;height:32px;color:var(--bg);z-index:1;font-size:14px;font-weight:700;font-family:var(--sans);border-radius:50%;place-items:center;display:grid;position:relative}.step b{font-family:var(--sans);margin-top:5px;font-size:.85em;display:block}.step span{color:var(--ink-2);font-size:.86em;font-family:var(--sans);line-height:1.5}.known{border:1px dashed var(--line-2);background:var(--surface-2);font-family:var(--sans);border-radius:18px;padding:16px 18px}.known .k{border-bottom:1px solid var(--line);gap:10px;padding:8px 0;font-size:.82em;line-height:1.5;display:flex}.known .k:last-child{border-bottom:0}.known .k svg{width:18px;height:18px;color:var(--accent);flex:none;margin-top:2px}.apply{background:var(--good-soft);font-family:var(--sans);border-radius:20px;padding:20px 18px}.apply .sit{color:var(--ink-2);margin-bottom:12px;font-size:.86em;line-height:1.5}.check-item{cursor:pointer;align-items:flex-start;gap:12px;padding:8px 0;font-size:.88em;line-height:1.45;display:flex}.check-item .box{border:2px solid var(--good);color:#fff;border-radius:7px;flex:none;place-items:center;width:22px;height:22px;margin-top:1px;display:grid}.check-item.on .box{background:var(--good)}.check-item.on span{color:var(--muted);text-decoration:line-through}.check-item .box svg{width:14px;height:14px}.say{background:var(--surface);font-family:var(--serif);box-shadow:var(--shadow);border-radius:16px 16px 16px 4px;margin-top:14px;padding:14px 16px;font-size:.92em;font-style:italic;line-height:1.55;position:relative}.foryou{background:var(--accent-wash);border:1px solid var(--accent-soft);border-radius:20px;gap:14px;padding:18px;display:flex}.foryou svg{width:26px;height:26px;color:var(--accent);flex:none}.foryou p{font-size:.9em;line-height:1.6}.pitfall{background:var(--warn-soft);border-radius:18px;gap:14px;padding:16px 18px;display:flex}.pitfall svg{width:24px;height:24px;color:var(--warn);flex:none}.pitfall p{font-family:var(--sans);font-size:.86em;line-height:1.55}.mantra{background:var(--night);color:var(--on-night);text-align:center;border-radius:22px;padding:30px 24px;position:relative;overflow:hidden}.mantra .eyebrow{color:color-mix(in srgb, var(--on-night) 55%, transparent)}.mantra p{font-family:var(--serif);letter-spacing:-.01em;margin-top:10px;font-size:1.32em;font-weight:600;line-height:1.3}.mantra svg.drop-art{opacity:.08;width:120px;height:120px;position:absolute;bottom:-30px;right:-20px}.quote{border-left:3px solid var(--line-2);padding:4px 0 4px 18px}.quote p{font-family:var(--serif);font-size:1em;font-style:italic;line-height:1.55}.quote span{color:var(--muted);font-size:.75em;font-family:var(--sans);margin-top:6px;display:block}.note{font-family:var(--sans);color:var(--ink-2);background:var(--bg-2);border-radius:14px;padding:12px 14px;font-size:.8em;line-height:1.5}.quiz{flex-direction:column;gap:12px;display:flex}.qa{background:var(--surface);border:1px solid var(--line);font-family:var(--sans);border-radius:18px;padding:16px 18px}.qa .q{font-family:var(--serif);font-size:.98em;font-weight:620;line-height:1.4}.qa .a{border-top:1px solid var(--line);color:var(--ink-2);margin-top:12px;padding-top:12px;font-size:.88em;line-height:1.55}.qa .actions{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}details.inventory{background:var(--surface);border:1px solid var(--line);font-family:var(--sans);border-radius:18px}details.inventory summary{cursor:pointer;align-items:center;gap:10px;padding:16px 18px;font-size:.85em;font-weight:650;list-style:none;display:flex}details.inventory summary::-webkit-details-marker{display:none}details.inventory summary svg{width:18px;height:18px;transition:transform .2s}details.inventory[open] summary svg.chev{transform:rotate(90deg)}.inv-group{padding:0 18px 14px}.inv-group h4{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:6px 0 8px;font-size:.72em}.inv{border-bottom:1px solid var(--line);gap:10px;padding:7px 0;font-size:.8em;line-height:1.5;display:flex}.inv:last-child{border-bottom:0}.inv .tag{text-transform:uppercase;letter-spacing:.04em;color:var(--muted);flex:none;width:74px;padding-top:2px;font-size:10.5px;font-weight:700}.finish{font-family:var(--sans);flex-direction:column;gap:14px;margin-top:44px;display:flex}.next-card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;align-items:center;gap:14px;padding:16px;text-decoration:none;display:flex}.next-card svg{width:22px;height:22px;color:var(--accent);flex:none}.ask-fab{right:16px;bottom:calc(18px + var(--safe-bottom));z-index:35;background:var(--ink);height:52px;color:var(--bg);box-shadow:var(--shadow-lg);border:0;border-radius:26px;align-items:center;gap:8px;padding:0 18px 0 14px;font-weight:700;display:inline-flex;position:fixed}.ask-fab svg{width:21px;height:21px}.aa-pop{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-lg);z-index:50;width:270px;font-family:var(--sans);border-radius:16px;flex-direction:column;gap:12px;padding:14px;display:flex;position:absolute;top:calc(100% + 6px);right:8px}.arc{flex-direction:column;gap:0;display:flex;position:relative}.arc .part{font-family:var(--sans);grid-template-columns:34px 1fr;gap:12px;padding-bottom:18px;display:grid;position:relative}.arc .part:before{content:"";background:var(--line-2);width:2px;position:absolute;top:34px;bottom:0;left:16px}.arc .part:last-child:before{display:none}.arc .part .c{border:2px solid var(--accent);width:34px;height:34px;color:var(--accent);background:var(--bg);border-radius:50%;place-items:center;font-weight:700;display:grid}.arc .part b{margin-top:5px;font-size:.9em;display:block}.arc .part span{color:var(--ink-2);font-size:.84em;line-height:1.5}.arc .part .chips{flex-wrap:wrap;gap:5px;margin-top:6px;display:flex}.insight{border-bottom:1px solid var(--line);grid-template-columns:34px 1fr;gap:12px;padding:16px 0;display:grid}.insight:last-child{border-bottom:0}.insight .n{font-family:var(--serif);color:var(--accent);font-size:24px;font-weight:600;line-height:1.1}.insight h3{font-family:var(--serif);margin-bottom:4px;font-size:1em;font-weight:650}.insight p{font-family:var(--serif);font-size:.93em;line-height:1.6}.legend{flex-wrap:wrap;gap:8px;display:flex}.legend span{color:var(--ink-2);align-items:center;gap:6px;font-size:12.5px;display:inline-flex}.legend i{border-radius:3px;width:10px;height:10px}.area{margin-top:30px}.area-head{align-items:baseline;gap:12px;margin-bottom:4px;display:flex}.area-head .n{font-family:var(--serif);color:var(--accent);font-size:15px;font-weight:650}.area-head h2{font-family:var(--serif);font-size:21px;font-weight:640}.area>p{color:var(--ink-2);margin-bottom:14px;font-size:14.5px}.concepts{grid-template-columns:1fr;gap:12px;display:grid}@media (min-width:760px){.concepts{grid-template-columns:1fr 1fr}}.concept{background:var(--surface);border:1px solid var(--line);border-radius:18px;flex-direction:column;gap:9px;padding:16px;display:flex}.concept h3{font-family:var(--serif);font-size:16.5px;font-weight:650}.concept .kern{color:var(--ink);font-size:14px;line-height:1.55}.concept .agree{color:var(--ink-2);gap:8px;font-size:13px;line-height:1.5;display:flex}.concept .agree svg{flex:none;width:16px;height:16px;margin-top:2px}.concept .agree.yes svg{color:var(--good)}.concept .agree.no svg{color:var(--warn)}.src{flex-wrap:wrap;gap:6px;display:flex}.src a{background:var(--bg-2);color:var(--ink-2);border:1px solid var(--line);border-radius:8px;align-items:center;gap:6px;max-width:100%;padding:4px 9px 4px 7px;font-size:12px;text-decoration:none;display:inline-flex}.src a i{border-radius:2px;flex:none;width:8px;height:8px}.src a span{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.src a.done{border-color:color-mix(in srgb, var(--good) 40%, transparent)}.heat{gap:3px;display:inline-flex}.heat i{background:var(--line-2);border-radius:2px;width:6px;height:14px}.heat i.on{background:var(--accent)}.tension{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--warn);border-radius:14px;padding:16px}.tension h3{font-family:var(--serif);margin-bottom:6px;font-size:16px}.tension p{color:var(--ink-2);font-size:14px;line-height:1.55}.flash-wrap{perspective:1400px}.flash{min-height:300px;transform-style:preserve-3d;cursor:pointer;transition:transform .55s cubic-bezier(.2,.75,.3,1);position:relative}.flash.flipped{transform:rotateY(180deg)}.flash .face{backface-visibility:hidden;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-lg);border-radius:24px;flex-direction:column;padding:26px 22px;display:flex;position:absolute;inset:0}.flash .back{background:var(--surface-2);transform:rotateY(180deg)}.flash .face .from{color:var(--muted);font-size:12.5px}.flash .face .q{font-family:var(--serif);margin:auto 0;padding:18px 0;font-size:22px;font-weight:620;line-height:1.35}.flash .face .a{font-family:var(--serif);margin:auto 0;padding:18px 0;font-size:18px;line-height:1.55}.flash .face .tap{color:var(--muted);text-align:center;font-size:12.5px}@media (prefers-reduced-motion:reduce){.flash{transition:none}}.rate{grid-template-columns:1fr 1fr;gap:12px;margin-top:18px;display:grid}.rate .btn{min-height:54px;font-size:16px}.rate .again{background:var(--bad-soft);color:var(--bad);border-color:#0000}.rate .known{background:var(--good-soft);color:var(--good);border-color:#0000}.scrim{z-index:80;background:#0a0b0f73;animation:.2s fade;position:fixed;inset:0}@keyframes fade{0%{opacity:0}}.sheet{z-index:81;background:var(--surface);max-height:92dvh;box-shadow:var(--shadow-lg);padding-bottom:var(--safe-bottom);border-radius:24px 24px 0 0;flex-direction:column;animation:.28s cubic-bezier(.2,.8,.3,1) up;display:flex;position:fixed;bottom:0;left:0;right:0}@keyframes up{0%{opacity:.4;transform:translateY(40px)}}@media (min-width:760px){.sheet{border-radius:24px;width:640px;max-height:86dvh;animation:.2s fade;bottom:50%;left:50%;right:auto;transform:translate(-50%,50%)}}.sheet .grab{background:var(--line-2);border-radius:3px;width:40px;height:5px;margin:9px auto 0}.sheet-head{border-bottom:1px solid var(--line);align-items:center;gap:10px;padding:12px 14px 12px 20px;display:flex}.sheet-body{-webkit-overflow-scrolling:touch;flex:1;padding:18px 20px;overflow-y:auto}.sheet.tall{height:88dvh}@media (min-width:760px){.sheet.tall{height:80dvh}}.msgs{flex-direction:column;gap:14px;display:flex}.msg{max-width:88%;font-size:15px;line-height:1.55}.msg.user{background:var(--ink);color:var(--bg);border-radius:18px 18px 4px;align-self:flex-end;padding:10px 14px}.msg.assistant{font-family:var(--serif);align-self:flex-start;font-size:16px;line-height:1.62}.msg.assistant p+p,.msg.assistant ul+p,.msg.assistant p+ul{margin-top:10px}.msg.assistant ul{margin:0;padding-left:20px}.msg.assistant li+li{margin-top:4px}.thinking{gap:5px;padding:6px 0;display:inline-flex}.thinking i{background:var(--accent);border-radius:50%;width:7px;height:7px;animation:1.2s infinite blink}.thinking i:nth-child(2){animation-delay:.2s}.thinking i:nth-child(3){animation-delay:.4s}@keyframes blink{0%,80%,to{opacity:.25}40%{opacity:1}}.presets{scrollbar-width:none;gap:8px;padding:10px 16px 0;display:flex;overflow-x:auto}.presets::-webkit-scrollbar{display:none}.presets button{border:1px solid var(--line-2);background:var(--surface-2);border-radius:99px;flex:none;padding:7px 13px;font-size:13px;font-weight:600}.composer{align-items:flex-end;gap:8px;padding:10px 14px 12px;display:flex}.composer textarea{resize:none;border:1px solid var(--line-2);background:var(--surface-2);border-radius:18px;outline:none;flex:1;max-height:140px;padding:11px 14px;font-size:16px}.composer textarea:focus{border-color:var(--accent)}.composer .send{background:var(--accent);color:#fff;border:0;border-radius:50%;flex:none;place-items:center;width:46px;height:46px;display:grid}.composer .send svg{width:20px;height:20px}.composer .send:disabled{opacity:.4}.original{font-family:var(--serif);white-space:pre-wrap;font-size:16px;line-height:1.7}.login{place-items:center;min-height:100dvh;padding:24px 16px;display:grid}.login .card{width:100%;max-width:380px;padding:30px 24px}.login .brand{justify-content:center;margin-bottom:8px}.login .brand svg{width:44px;height:44px}.login .brand b{font-size:32px}.error-box{background:var(--bad-soft);color:var(--bad);border-radius:12px;padding:10px 12px;font-size:14px}.cost-bar{background:var(--bg-2);border-radius:99px;height:12px;display:flex;overflow:hidden}.cost-bar i{height:100%;display:block}