@font-face{font-family:IRANSans;font-style:normal;font-weight:300;font-display:swap;src:url(/fonts/iransans/IRANSansWeb_Light.woff2) format("woff2")}@font-face{font-family:IRANSans;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/iransans/IRANSansWeb.woff2) format("woff2")}@font-face{font-family:IRANSans;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/iransans/IRANSansWeb_Medium.woff2) format("woff2")}@font-face{font-family:IRANSans;font-style:normal;font-weight:600 900;font-display:swap;src:url(/fonts/iransans/IRANSansWeb_Bold.woff2) format("woff2")}:root{--ink: #1c2230;--ink-soft: #5b6478;--ink-faint: #939bad;--bg: #f6f7fb;--surface: #ffffff;--line: #e6e8f0;--line-soft: #eef0f6;--brand: #4c6ef5;--brand-dark: #3b5bdb;--art-der: #2f6fed;--art-die: #e23b54;--art-das: #1f9d57;--art-plural: #8a63d2;--trigger: #d97706;--again: #e23b54;--hard: #e8973a;--good: #1f9d57;--easy: #2f6fed;--sr-1: #9dadfa;--sr-2: #6f86f7;--sr-3: #4c6ef5;--sr-4: #2b3f9c;--sr-off: #939bad;--radius: 14px;--radius-sm: 9px;--radius-lg: 22px;--shadow-sm: 0 1px 2px rgba(20, 28, 46, .06), 0 1px 3px rgba(20, 28, 46, .05);--shadow-md: 0 6px 24px rgba(20, 28, 46, .1);--font: "General Sans", "IRANSans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}h1,h2,h3{margin:0 0 .4em;font-weight:700;letter-spacing:-.01em}a{color:var(--brand-dark);text-decoration:none}a:hover{text-decoration:underline}kbd{font-family:var(--mono);font-size:.72em;background:#00000012;border-radius:5px;padding:1px 5px;margin-left:6px}.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid transparent;border-radius:var(--radius-sm);padding:9px 16px;font:inherit;font-weight:600;cursor:pointer;transition:background .12s,border-color 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auto;max-width:720px;box-shadow:var(--shadow-sm)}.panel--error{border-color:var(--again);color:var(--again)}.art-der{color:var(--art-der)}.art-die{color:var(--art-die)}.art-das{color:var(--art-das)}.art-plural{color:var(--art-plural)}.trigger-word{color:var(--trigger);font-weight:700;text-decoration:underline;text-decoration-style:dotted;text-underline-offset:3px}.pill{display:inline-flex;align-items:center;font-size:.78rem;font-weight:700;padding:2px 9px;border-radius:999px;background:#0000000f;color:var(--ink-soft)}.pill--der{background:#2f6fed24;color:var(--art-der)}.pill--die{background:#e23b5424;color:var(--art-die)}.pill--das{background:#1f9d5724;color:var(--art-das)}.pill--plural{background:#8a63d224;color:var(--art-plural)}.art-select--der{color:var(--art-der)}.art-select--die{color:var(--art-die)}.art-select--das{color:var(--art-das)}.art-select--plural{color:var(--art-plural)}.auth{min-height:100%;display:grid;place-items:center;padding:24px}.auth__card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-md)}.auth__brand{display:inline-block;font-weight:600;color:var(--ink-soft);margin-bottom:14px}.auth__sub{color:var(--ink-soft);margin-top:0}.auth__form{display:flex;flex-direction:column;gap:16px;margin-top:18px}.auth__label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:.9rem}.auth__input{font:inherit;padding:11px 13px;border:1px solid var(--line);border-radius:var(--radius-sm)}.auth__input:focus{border-color:var(--brand);outline:none}.auth__input--code{font-family:var(--mono);font-size:1.5rem;letter-spacing:.4em;text-align:center}.auth__error{color:var(--again);font-size:.88rem;margin:0}.auth__hint{color:var(--ink-faint);font-size:.85rem;margin-top:18px}.auth__link{background:none;border:none;color:var(--ink-soft);cursor:pointer;margin-top:14px;font:inherit}.dev-banner{margin:16px 0;padding:12px 14px;border:1px dashed var(--brand);border-radius:var(--radius-sm);background:#4c6ef50f;display:flex;flex-direction:column;gap:2px}.dev-banner__label{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--brand-dark)}.dev-banner__code{font-family:var(--mono);font-size:1.6rem;font-weight:700;letter-spacing:.3em}.dev-banner__note{font-size:.78rem;color:var(--ink-faint)}.landing{min-height:100%;display:flex;flex-direction:column}.landing__nav{display:flex;justify-content:space-between;align-items:center;padding:20px 28px}.landing__brand{font-weight:800;font-size:1.2rem}.landing__hero{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px 24px;max-width:760px;margin:0 auto}.landing__hero h1{font-size:clamp(2.4rem,6vw,4rem);line-height:1.05}.accent{color:var(--brand)}.landing__lede{color:var(--ink-soft);font-size:1.12rem;line-height:1.6;max-width:600px}.landing__cta{margin:28px 0 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#00000059}.hero__langs{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:24px}.langpill{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:#ffffff12;border:1px solid rgba(255,255,255,.15);color:#d3dbf5;font-weight:600;font-size:.9rem}.studycard{width:100%;max-width:384px;margin:44px auto 0;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:0 26px 64px #00000073;padding:24px 22px 18px;text-align:center}.studycard__tag{display:inline-block;margin-bottom:12px}.studycard__q{font-size:1.9rem;font-weight:800;letter-spacing:-.01em}.studycard__reading{color:var(--ink-faint);font-family:var(--mono);font-size:.9rem;margin-top:4px}.studycard__sep{height:1px;background:var(--line);margin:16px 0}.studycard__a{color:var(--ink-soft);font-size:1.02rem;line-height:1.5}.studycard__grades{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:18px}.studycard__grades 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8px;border-radius:999px}.gcard__pill--verb{background:#d9770624;color:var(--trigger)}.gcard__pill--en{background:#1f9d5724;color:var(--art-das)}.gcard__front{font-weight:700;font-size:1.05rem}.gcard__back{grid-column:2;color:var(--ink-soft);font-size:.85rem}.langs{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:84px 24px}.langs__grid{max-width:940px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:22px}@media (max-width: 760px){.langs__grid{grid-template-columns:1fr}}.langpanel{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 24px}.langpanel__title{display:flex;align-items:center;gap:10px;font-size:1.15rem;margin:0 0 12px}.langpanel__lede{color:var(--ink-soft);line-height:1.6;margin:0 0 16px;font-size:.98rem}.langpanel__chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.langpanel__chips>span{font-weight:800;padding:4px 12px;border-radius:999px;font-size:.9rem}.langpanel__list{margin:0;padding-left:18px;color:var(--ink-soft);line-height:1.75;font-size:.95rem}.ctaband{padding:30px 24px 88px}.ctaband__inner{max-width:820px;margin:0 auto;text-align:center;background:radial-gradient(700px 300px at 50% 0%,#1d2748,#10152a);color:#eef1fb;border-radius:var(--radius-lg);padding:56px 32px}.ctaband__inner p{color:#b9c1dc;font-size:1.06rem;margin:12px 0 28px}.shell{min-height:100%;display:flex;flex-direction:column}.shell__bar{display:flex;align-items:center;gap:24px;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}.shell__brand{font-weight:800;font-size:1.1rem}.shell__nav{display:flex;gap:6px}.shell__link{padding:7px 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b{color:var(--hard)}.activity__lbl{font-size:.72rem;font-weight:600;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.03em}.activity__nudge{flex:1;min-width:0;color:var(--ink-soft);font-weight:600;font-size:.88rem}.activity__heatwrap{overflow-x:auto;padding-bottom:4px}.activity__heat{display:grid;grid-template-rows:repeat(7,11px);grid-auto-flow:column;gap:3px;width:max-content}.heatcell{width:11px;height:11px;border-radius:3px;background:var(--line-soft)}.heatcell--pad{background:transparent}.heat--0{background:var(--line-soft)}.heat--1{background:#4c6ef54d}.heat--2{background:#4c6ef585}.heat--3{background:#4c6ef5bd}.heat--4{background:var(--brand)}.activity__legend{display:flex;align-items:center;gap:4px;margin-top:8px;font-size:.72rem;color:var(--ink-faint)}.activity__legend .heatcell{width:11px;height:11px}.study{min-height:100%;display:flex;flex-direction:column;background:var(--bg)}.study__bar{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;border-bottom:1px solid var(--line);background:var(--surface)}.study__progress{display:flex;gap:6px}.study__stage{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;padding:32px 20px}.cardtools{display:flex;gap:8px;width:100%;max-width:560px;justify-content:flex-end;margin-bottom:-16px}.cardtools__btn{background:var(--surface);border:1px solid var(--line);border-radius:8px;width:38px;height:38px;font-size:1.05rem;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.cardtools__btn:hover:not(:disabled){border-color:var(--ink-faint)}.cardtools__btn:disabled{opacity:.5;cursor:default}.editmodal{width:min(640px,100%);max-height:88vh}.editmodal .lessonview__head{flex:none}.editmodal__body{flex:1 1 auto;min-height:0;padding:16px 18px;overflow-y:auto;-webkit-overflow-scrolling:touch;display:flex;flex-direction:column;gap:14px}.editmodal__foot{flex:none;display:flex;justify-content:flex-end;gap:10px;padding:12px 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