:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#243047;font-synthesis:none;letter-spacing:0;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--ink:#243047;--muted:#73809a;--paper:#fffaf0;--sky:#e7f7ff;--mint:#c9f2dc;--coral:#ff7168;--coral-dark:#e95f54;--lemon:#ffe176;--blue:#59a9ff;--green:#4abf7a;--line:#2430471f;--shadow:0 18px 45px #30456329;background:#f8fcff;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Arial,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button{font:inherit;-webkit-tap-highlight-color:transparent}.app-page{background:radial-gradient(circle at 9% 12%,#ffe17675 0 92px,#0000 93px),radial-gradient(circle at 91% 15%,#c9f2dcb3 0 118px,#0000 119px),linear-gradient(135deg,#f8fcff 0%,#f6fff4 44%,#fff6ec 100%);min-height:100vh}.app-shell{width:min(100%,430px);min-height:100dvh;padding:max(18px, env(safe-area-inset-top)) 18px calc(94px + env(safe-area-inset-bottom));isolation:isolate;background:radial-gradient(circle at 20% 9%, #ffe1768f 0 62px, transparent 63px), radial-gradient(circle at 96% 23%, #c9f2dc94 0 84px, transparent 85px), linear-gradient(180deg, #ebf9ff 0%, var(--paper) 40%, var(--paper) 100%);margin:0 auto;position:relative;overflow:hidden}.app-header{justify-content:space-between;align-items:center;gap:14px;min-height:92px;padding:10px 4px 8px;display:flex}.title-block{min-width:0}.eyebrow{color:var(--coral-dark);margin:0 0 5px;font-size:13px;font-weight:850;line-height:1.2}h1,h2,p{letter-spacing:0}.title-block h1{color:var(--ink);margin:0;font-size:34px;font-weight:950;line-height:1.08}.app-logo{object-fit:contain;filter:drop-shadow(0 8px 10px #2632471f);border-radius:18px;flex:none;width:84px;height:84px}.view-panel{z-index:1;position:relative}.segmented{border:1px solid var(--line);background:#ffffffc2;border-radius:8px;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;margin:10px 0 16px;padding:4px;display:grid}.segmented button{color:#5e6d87;cursor:pointer;background:0 0;border:0;border-radius:7px;min-width:0;height:39px;font-size:14px;font-weight:850}.segmented button.active{color:#fff;background:var(--coral);box-shadow:0 5px 12px #ff716847}.section-row{justify-content:space-between;align-items:center;gap:12px;margin:0 0 12px;display:flex}.section-row h2{margin:0;font-size:20px;font-weight:950;line-height:1.25}.pill{border:1px solid var(--line);color:#68758e;white-space:nowrap;background:#fff;border-radius:8px;align-items:center;height:30px;padding:0 11px;font-size:13px;font-weight:850;display:inline-flex}.pinyin-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;display:grid}.pinyin-card{min-height:78px;color:inherit;cursor:pointer;background:#fff;border:2px solid #2430471a;border-radius:8px;align-content:center;place-items:center;padding:9px 5px 8px;display:grid;box-shadow:0 7px #2430470d}.pinyin-letter{color:#263247;font-size:clamp(23px,7.2vw,32px);font-weight:950;line-height:1;display:block}.pinyin-example{color:#5f6d85;white-space:nowrap;margin-top:7px;font-size:13px;font-weight:850;line-height:1.1;display:block}.pinyin-card.yellow{background:#fff3b0}.pinyin-card.mint{background:#daf7e9}.pinyin-card.blue{background:#dff2ff}.pinyin-card.peach{background:#ffe1dc}.category-row{scrollbar-width:none;gap:8px;margin:10px 0 16px;padding-bottom:2px;display:flex;overflow-x:auto}.category-row::-webkit-scrollbar{display:none}.chip{border:1px solid var(--line);color:#5c6981;white-space:nowrap;cursor:pointer;background:#ffffffc7;border-radius:8px;align-items:center;height:34px;padding:0 13px;font-size:14px;font-weight:850;display:inline-flex}.chip.active{color:#fff;background:var(--blue);border-color:#0000;box-shadow:0 6px 14px #59a9ff47}.list-toolbar{justify-content:space-between;align-items:center;gap:10px;margin:10px 0 14px;display:flex}.detail-toolbar{margin-bottom:10px}.text-button{color:#3a4860;cursor:pointer;background:#ffffffc7;border:0;border-radius:8px;align-items:center;gap:6px;min-height:34px;padding:0 10px;font-size:14px;font-weight:900;display:inline-flex}.text-button.secondary{color:var(--coral-dark)}.list-summary{border:1px solid var(--line);background:#ffffffd1;border-radius:8px;grid-template-columns:1fr auto;align-items:center;gap:12px;margin:0 0 12px;padding:13px 14px;display:grid;box-shadow:0 6px #2430470a}.list-summary h2{color:var(--ink);margin:0;font-size:20px;font-weight:950;line-height:1.25}.list-summary p{color:var(--muted);margin:3px 0 0;font-size:13px;font-weight:850;line-height:1.3}.list-summary svg{color:var(--blue)}.word-list-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.word-list-card{min-height:102px;color:inherit;text-align:center;cursor:pointer;background:#fff;border:2px solid #2430471a;border-radius:8px;align-content:center;place-items:center;gap:8px;padding:12px 10px;display:grid;box-shadow:0 7px #2430470d}.word-list-card:nth-child(4n+1){background:#fff3b0}.word-list-card:nth-child(4n+2){background:#daf7e9}.word-list-card:nth-child(4n+3){background:#dff2ff}.word-list-card:nth-child(4n+4){background:#ffe1dc}.list-card-pinyin{color:#2f4e77;font-size:clamp(17px,4.8vw,21px);font-weight:950;line-height:1.15}.list-card-hanzi{color:#263247;font-size:clamp(25px,7vw,32px);font-weight:950;line-height:1.05}.word-card{text-align:center;background:#fff;border:2px solid #2430471a;border-radius:8px;min-height:390px;padding:28px 20px 22px;position:relative;overflow:hidden;box-shadow:0 13px #2430470d}.word-card:before,.word-card:after{content:"";pointer-events:none;border-radius:50%;position:absolute}.word-card:before{background:#ffe17675;width:145px;height:145px;top:-48px;right:-42px}.word-card:after{background:#c9f2dc9e;width:126px;height:126px;bottom:-50px;left:-36px}.card-meta,.word-progress,.syllable-row,.word-hanzi{z-index:1;position:relative}.card-meta{justify-content:center;gap:8px;margin-bottom:14px;display:flex}.card-meta span{color:#5b6982;background:#f3f8ff;border:1px solid #24304714;border-radius:8px;align-items:center;height:30px;padding:0 11px;font-size:13px;font-weight:850;display:inline-flex}.word-progress{color:var(--coral-dark);margin:0 0 14px;font-size:13px;font-weight:850;line-height:1.2}.syllable-row{flex-wrap:wrap;justify-content:center;gap:8px;margin:34px auto 0;display:flex}.syllable-part{align-items:center;gap:8px;display:inline-flex}.syllable-part b{color:#2f4e77;white-space:nowrap;background:#e7f7ff;border-radius:8px;justify-content:center;align-items:center;min-width:86px;min-height:44px;padding:0 13px;font-size:19px;font-weight:950;line-height:1.1;display:inline-flex}.syllable-part i{color:#9aa6ba;font-size:22px;font-style:normal;font-weight:950;line-height:1}.word-hanzi{color:#263247;margin:48px 0 0;font-size:clamp(78px,23vw,104px);font-weight:950;line-height:1}.card-actions{grid-template-columns:54px 1fr 54px;align-items:center;gap:12px;margin:18px 0 0;display:grid}.compact-actions{grid-template-columns:54px 54px;justify-content:space-between;padding:0 48px}.round-button{color:#3a4860;cursor:pointer;background:#fff;border:0;border-radius:50%;place-items:center;width:54px;height:54px;display:grid;box-shadow:0 7px #24304714}.bottom-nav{left:50%;bottom:max(16px, env(safe-area-inset-bottom));border:1px solid var(--line);z-index:3;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff0;border-radius:8px;grid-template-columns:repeat(2,1fr);align-items:center;width:min(100% - 36px,394px);height:66px;display:grid;position:fixed;transform:translate(-50%);box-shadow:0 12px 28px #3045631f}.nav-item{color:#76839a;cursor:pointer;background:0 0;border:0;align-content:center;place-items:center;gap:4px;height:100%;font-size:12px;font-weight:850;display:grid}.nav-item.active{color:var(--coral-dark)}@media (width>=560px){.app-page{padding:28px 0}.app-shell{min-height:844px;box-shadow:var(--shadow);border:10px solid #1f2a3a;border-radius:36px}.bottom-nav{width:100%;margin-top:22px;position:sticky;bottom:auto;left:auto;transform:none}}@media (width<=374px){.app-shell{padding-inline:14px}.pinyin-grid{gap:8px}.pinyin-card{min-height:72px}.card-actions{grid-template-columns:50px 1fr 50px;gap:8px}.compact-actions{grid-template-columns:50px 50px;padding:0 36px}.round-button{width:50px;height:50px}}