@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", 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components;@layer utilities{.start{inset-inline-start:var(--spacing)}.table{display:table}}:root{--ink:#173042;--paper:#f7f1e7;--cream:#fffdf8;--coral:#e7684b;--green:#3f745d;--line:#d8d0c4}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);margin:0;font-family:Arial,Microsoft YaHei,sans-serif}button,input{font:inherit}button{color:inherit}.topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;max-width:1180px;height:76px;margin:auto;padding:0 20px;display:flex}.brand{color:var(--ink);align-items:center;gap:11px;font-family:Georgia,serif;font-size:25px;font-weight:700;text-decoration:none;display:flex}.brand-mark{background:var(--green);color:#fff;border-radius:50% 50% 50% 12px;place-items:center;width:37px;height:37px;display:grid;transform:rotate(-5deg)}.brand small{letter-spacing:1.5px;opacity:.68;margin-top:3px;font:11px 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em{color:var(--green);font-weight:400}.intro{color:#596a70;margin:22px 0 0;font-size:17px;line-height:1.8}.stats{background:var(--cream);border:1px solid #1730421f;border-radius:6px;padding:26px 28px;box-shadow:8px 9px #e6dccd}.stats span{color:#66777d;letter-spacing:.5px;font-size:14px}.stats strong{margin:8px 0 14px;font:44px Georgia,serif;display:block}.stats strong small{color:#9da5a4;font-size:17px}.bar{background:#e8e2d8;border-radius:5px;height:5px;overflow:hidden}.bar i{background:var(--coral);border-radius:5px;min-width:2px;height:100%;display:block}.stat-row{border-top:1px solid #e8e2d8;grid-template-columns:1fr 1fr;margin-top:22px;padding-top:18px;display:grid}.stat-row p{margin:0}.stat-row p+p{border-left:1px solid #e8e2d8;padding-left:25px}.stat-row b{margin-top:6px;font:23px Georgia,serif;display:block}.study-shell{max-width:750px;margin:0 auto 80px;padding:0 24px}.session-line{text-transform:uppercase;letter-spacing:1.2px;color:#66777d;justify-content:space-between;margin:0 5px 12px;font-size:14px;display:flex}.flashcard,.spell-card{background:var(--cream);border:1px solid #d8d0c4;border-radius:7px;flex-direction:column;justify-content:center;align-items:center;width:100%;min-height:355px;padding:55px;display:flex;position:relative;overflow:hidden;box-shadow:10px 12px #ded4c5}.flashcard{cursor:pointer;transition:transform .2s,box-shadow .2s}.flashcard:hover{transform:translateY(-2px);box-shadow:12px 15px #ded4c5}.flashcard:before{content:"";width:130px;height:130px;box-shadow:0 0 0 17px var(--cream),0 0 0 18px #e9c9bb;border:1px solid #e9c9bb;border-radius:50%;position:absolute;top:-65px;right:-35px}.card-number{color:#7e8987;letter-spacing:1.5px;font:14px Georgia,serif;position:absolute;top:22px;left:25px}.word{letter-spacing:-1px;font:56px Georgia,serif}.word-small{color:var(--green);margin-top:18px;font:20px 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var(--ink);width:min(440px,100%);margin:24px 0 22px;display:flex}.input-wrap input{text-align:center;background:0 0;border:0;outline:0;flex:1;min-width:0;padding:11px 5px;font:27px Georgia,serif}.input-wrap button{cursor:pointer;background:0 0;border:0;font-size:18px}.input-wrap.right{border-color:var(--green)}.input-wrap.wrong{border-color:var(--coral)}.check:disabled{opacity:.35}.feedback{border-radius:4px;justify-content:space-between;align-items:center;width:min(500px,100%);padding:16px 18px;font-size:16px;display:flex}.feedback.right{color:#285441;background:#dce9df}.feedback.wrong{color:#7d3525;background:#f2ded7}.feedback button{cursor:pointer;background:0 0;border:0;font-weight:700}.library{max-width:1100px;margin:0 auto 80px;padding:5px 24px}.library-head{justify-content:space-between;align-items:end;display:flex}.library h2{margin:0;font:36px Georgia,serif}.library-head input{border:1px solid var(--line);background:var(--cream);border-radius:4px;outline:none;width:270px;padding:13px 15px;font-size:16px}.filters{border-bottom:1px solid var(--line);align-items:center;gap:5px;margin:30px 0 18px;padding-bottom:14px;display:flex}.filters span{color:#66777d;margin-left:auto;font-size:14px}.word-grid{grid-template-columns:repeat(2,1fr);gap:1px 28px;display:grid}.word-grid article{border-bottom:1px solid var(--line);grid-template-columns:46px 1fr 30px;align-items:center;min-height:88px;display:grid}.word-grid article>span{color:#77736c;font:14px Georgia,serif}.word-grid h3{margin:0 0 6px;font:23px Georgia,serif}.word-grid p{color:#596a70;margin:0;font-size:16px;line-height:1.45}.word-grid b{color:#8e877e;border:1px solid #ccc4b8;border-radius:50%;place-items:center;width:24px;height:24px;display:grid}.word-grid b.done{background:var(--green);color:#fff;border-color:var(--green)}footer{border-top:1px solid var(--line);color:#6e7775;letter-spacing:.2px;justify-content:space-between;max-width:1100px;margin:auto;padding:25px 20px 35px;font-size:14px;display:flex}footer p{margin:0}@media (max-width:720px){.topbar{flex-wrap:wrap;gap:14px;height:auto;padding:14px 18px}.brand{font-size:21px}.home-link{margin-left:auto;font-size:15px}.streak{display:none}nav{order:3;justify-content:center;width:100%}nav button{flex:1}.hero{grid-template-columns:1fr;gap:28px;margin:42px auto 35px}h1{font-size:43px}.intro br{display:none}.stats{box-shadow:5px 6px #e6dccd}.flashcard,.spell-card{min-height:330px;padding:42px 24px;box-shadow:6px 8px #ded4c5}.word{font-size:44px}.meaning{font-size:25px}.controls{align-items:stretch;gap:8px}.sound span{display:none}.controls>div{flex:1}.again,.know{flex:1;padding:13px 12px}.library-head{display:block}.library-head input{width:100%;margin-top:20px}.word-grid{grid-template-columns:1fr}.filters button{padding:8px 12px}footer{text-align:center;display:block}footer>*{display:block;margin:6px 0!important}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}