@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
:root{--bg:#fffdf8;--paper:#fff;--warm:#f7f3eb;--ink:#181614;--muted:#716b62;--line:rgba(31,29,25,.11);--blue:#1677ff;--green:#16a34a;--orange:#f59e0b;--red:#ef4444;--shadow:rgba(0,0,0,.04) 0 4px 18px,rgba(0,0,0,.027) 0 2px 8px,rgba(0,0,0,.02) 0 .8px 3px;--deep:rgba(0,0,0,.06) 0 14px 44px}
*{box-sizing:border-box}html,body{margin:0;max-width:100%;overflow-x:hidden;font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;background:#fff8ed;color:var(--ink);-webkit-font-smoothing:antialiased}button,select,input{font:inherit}.hidden{display:none!important}.muted{color:var(--muted)}
.momo-page{background:linear-gradient(180deg,#fff6e8 0%,#fffdf8 48%,#f7f3eb 100%)}.momo-app{max-width:520px;min-height:100dvh;margin:0 auto;padding:calc(16px + env(safe-area-inset-top)) 16px calc(92px + env(safe-area-inset-bottom));position:relative}.momo-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.momo-brand{font-size:26px;font-weight:850;letter-spacing:-.06em}.momo-subtitle{font-size:13px;color:var(--muted);font-weight:650}.momo-link{color:var(--blue);text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 13px;font-weight:800;box-shadow:var(--shadow)}.momo-progress-card{background:rgba(255,255,255,.82);border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--shadow);margin-bottom:12px}.progress-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;font-weight:800;margin-bottom:9px}.learn-bar{height:9px;background:#f0e6d8;border-radius:999px;overflow:hidden}.learn-bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,#1677ff,#8bc7ff);border-radius:999px;transition:.24s}.deck-controls{display:grid;grid-template-columns:1fr 96px;gap:10px;margin-bottom:14px}.deck-controls select{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:11px 12px;font-size:14px;font-weight:750;color:#2d2924;box-shadow:rgba(0,0,0,.02) 0 1px 2px}.memory-card{position:relative;background:linear-gradient(180deg,#fff,#fffaf1);border:1px solid rgba(31,29,25,.1);border-radius:30px;min-height:430px;padding:22px 20px;box-shadow:var(--deep);display:flex;flex-direction:column;justify-content:center;overflow:hidden}.memory-card:before{content:'';position:absolute;right:-60px;top:-60px;width:170px;height:170px;border-radius:50%;background:#e8f3ff;z-index:0}.memory-card>*{position:relative;z-index:1}.card-status{position:absolute;top:18px;left:18px;right:18px;display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px;font-weight:800}.round-speak{position:absolute;right:20px;top:54px;width:46px;height:46px;border-radius:50%;border:1px solid rgba(22,119,255,.18);background:#eff7ff;color:var(--blue);font-weight:900;box-shadow:var(--shadow)}.memory-word{font-size:clamp(54px,18vw,92px);line-height:.95;font-weight:850;letter-spacing:-.075em;text-align:center;word-break:break-word;margin-top:34px}.memory-ipa{text-align:center;color:var(--muted);font-size:18px;font-weight:650;margin-top:10px}.answer-block{margin-top:28px;animation:fade .18s ease}.memory-zh{text-align:center;font-size:26px;font-weight:850;margin-bottom:12px}.memory-def{text-align:center;color:#4b463f;font-size:15px;line-height:1.55}.memory-example{background:#fff7e5;border-left:4px solid #f0c36a;border-radius:0 16px 16px 0;padding:12px 13px;font-size:15px;line-height:1.55}.memory-example small{color:var(--muted)}.finish-card{text-align:center;margin:auto}.finish-card h2{font-size:32px;letter-spacing:-.05em}.recall-actions{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-top:14px}.recall-btn{border:0;border-radius:20px;padding:14px 8px;color:#fff;box-shadow:var(--shadow);min-height:68px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}.recall-btn b{font-size:18px}.recall-btn span{font-size:12px;opacity:.88;font-weight:700}.recall-btn.again{background:linear-gradient(180deg,#ff7b7b,#ef4444)}.recall-btn.hard{background:linear-gradient(180deg,#ffc857,#f59e0b)}.recall-btn.good{background:linear-gradient(180deg,#45d47a,#16a34a)}.quick-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}.quick-stats div{background:rgba(255,255,255,.75);border:1px solid var(--line);border-radius:16px;padding:10px;text-align:center}.quick-stats b{display:block;font-size:22px}.quick-stats span{font-size:12px;color:var(--muted);font-weight:750}.bottom-tabs{position:fixed;left:50%;bottom:0;transform:translateX(-50%);width:min(520px,100%);display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:rgba(255,253,248,.9);backdrop-filter:blur(18px);border-top:1px solid var(--line);z-index:30}.bottom-tabs a{text-align:center;text-decoration:none;color:var(--muted);font-size:13px;font-weight:850;padding:10px;border-radius:14px}.bottom-tabs a.active{background:#1677ff;color:#fff}.primary-btn,.ghost-btn,.mini-btn,button.speak{cursor:pointer;border-radius:999px;padding:10px 14px;font-weight:800}.primary-btn{border:1px solid var(--blue);background:var(--blue);color:#fff}.ghost-btn,.mini-btn,button.speak{border:1px solid var(--line);background:#fff;color:var(--ink)}
.topnav{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:6px;padding:calc(12px + env(safe-area-inset-top)) max(18px,calc((100vw - 1180px)/2)) 12px;background:rgba(255,253,248,.84);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.topnav:before{content:'Ogden 850';font-weight:850;letter-spacing:-.05em;margin-right:20px}.topnav a{color:#4f4a43;text-decoration:none;font-size:14px;font-weight:800;padding:8px 12px;border-radius:999px}.topnav a:hover{background:rgba(0,0,0,.045)}.container{max-width:1180px;margin:0 auto;padding:42px 22px calc(88px + env(safe-area-inset-bottom))}.pagehead{padding:32px 0 10px}.pagehead h1{font-size:clamp(38px,5vw,62px);line-height:.98;letter-spacing:-.06em;margin:0 0 12px}.pagehead p{color:var(--muted);font-size:18px}.panel,.card,.word-card{background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow)}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px}.num{font-size:38px;font-weight:850;letter-spacing:-.06em}.label{color:var(--muted);font-size:14px;font-weight:700}.toolbar{display:flex;gap:12px;margin:24px 0;flex-wrap:wrap}.toolbar input,.toolbar select{min-width:220px;background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-weight:650}.word-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}.word-card{background:linear-gradient(180deg,#fff,#fffaf1)}.word-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.word{font-size:30px;font-weight:850;letter-spacing:-.055em}.example{border-left:3px solid #f0c36a;background:#fff9ec;border-radius:0 12px 12px 0;padding:10px 12px;color:#39342d}.badge{display:inline-flex;align-items:center;padding:4px 8px;border-radius:9999px;background:#f2f9ff;color:#097fe8;border:1px solid rgba(0,117,222,.13);font-size:12px;font-weight:800}.status-good{background:#effaf1;color:#158330}.status-hard{background:#fff7e6;color:#a75a00}.status-again{background:#fff1f1;color:#d12d2d}.word-status-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:12px}.mini-btn{padding:6px 9px;font-size:12px}.progress-row{margin:16px 0}.bar{height:10px;border-radius:999px;background:#f1ebe2;overflow:hidden;margin-top:8px}.bar span{display:block;height:100%;background:linear-gradient(90deg,#1677ff,#8bc7ff)}@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}@media(max-width:560px){.momo-app{padding-left:12px;padding-right:12px}.memory-card{min-height:410px;border-radius:26px}.deck-controls{grid-template-columns:1fr 86px}.recall-actions{gap:8px}.recall-btn{border-radius:18px}.topnav{overflow-x:auto}.container{padding-left:14px;padding-right:14px}.toolbar input,.toolbar select{width:100%;min-width:0}.word-list{grid-template-columns:1fr}}@media(max-width:380px){.memory-card{min-height:380px;padding:20px 14px}.memory-word{font-size:clamp(46px,20vw,70px)}.recall-actions{grid-template-columns:1fr}.quick-stats{grid-template-columns:1fr 1fr 1fr}.memory-zh{font-size:22px}}