:root{--bg:#f5f3ee;--card:#fffdfa;--ink:#292722;--muted:#746f65;--line:#ded8cd;--accent:#6d5d3f;--accent-dark:#55472f;--accent2:#eee6d8;--good:#426b4d;--warn:#9b6b2f;--danger:#9a4f45;--shadow:0 10px 30px rgba(59,48,31,.08);font-size:18px;color-scheme:light}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Microsoft YaHei",sans-serif;line-height:1.72;-webkit-text-size-adjust:100%;text-rendering:optimizeLegibility}body.modal-open{overflow:hidden}button,input,select{font:inherit}button{cursor:pointer;color:inherit}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(109,93,63,.28);outline-offset:2px}.app{max-width:1080px;margin:auto;padding:calc(16px + env(safe-area-inset-top)) 18px calc(96px + env(safe-area-inset-bottom))}.top{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:2px 0 16px}.brand h1{font-family:"STKaiti","KaiTi","Songti SC",serif;margin:0;font-size:1.68rem;line-height:1.25}.brand p{margin:3px 0 0;color:var(--muted);font-size:.86rem}.header-actions{display:flex;align-items:center;gap:10px}.font-controls{display:flex;align-items:center;gap:6px}.font-size-label{min-width:2.8rem;text-align:center;color:var(--muted);font-size:.78rem}.iconbtn{min-height:44px;border:1px solid var(--line);background:var(--card);border-radius:13px;padding:8px 12px}.iconbtn.compact{padding:8px 10px}.sync-button{display:flex;align-items:center;gap:7px}.sync-dot{width:9px;height:9px;border-radius:50%;background:#9b968e}.sync-dot.ok{background:var(--good)}.sync-dot.busy{background:var(--warn)}.sync-dot.error{background:var(--danger)}
.nav{position:sticky;top:env(safe-area-inset-top);z-index:9;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;background:rgba(245,243,238,.94);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:9px 0}.nav button{min-height:48px;border:1px solid var(--line);background:var(--card);border-radius:14px;padding:10px 8px;font-weight:650}.nav button.active{background:var(--accent);color:white;border-color:var(--accent)}.page{display:none}.page.active{display:block}.hero{background:linear-gradient(135deg,#fffdf8,#eee5d5);border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow);margin-top:12px}.eyebrow{font-size:.8rem;color:var(--accent);font-weight:750;letter-spacing:.08em}.hero h2{margin:4px 0 8px;font-family:"STKaiti","KaiTi","Songti SC",serif;font-size:1.62rem}.hero p{color:var(--muted);margin:0}.progress-wrap{margin:20px 0 8px;background:#e6dfd3;height:12px;border-radius:99px;overflow:hidden}.progress{height:100%;background:var(--good);width:0;transition:.3s}.progress-text{font-size:.88rem;color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:18px 0}.stat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px;text-align:center}.stat b{display:block;font-size:1.35rem}.stat span{color:var(--muted);font-size:.8rem}.actions{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.primary,.secondary{min-height:48px;border-radius:15px;padding:12px 16px;border:0;font-weight:700}.primary{background:var(--accent);color:white}.primary:active{background:var(--accent-dark)}.secondary{background:var(--accent2)}.secondary.small{min-height:42px;padding:8px 13px}.text-button{min-height:44px;border:0;background:transparent;color:var(--accent);font-weight:750;padding:8px}.notice-card{display:flex;justify-content:space-between;align-items:center;gap:14px;background:#fff8e8;border:1px solid #e6d3a9;border-radius:18px;padding:14px 16px;margin-top:14px}.notice-card p{margin:2px 0;color:var(--muted);font-size:.84rem}.section-title{display:flex;justify-content:space-between;align-items:end;gap:12px;margin:28px 0 12px}.section-title h2{margin:0;font-size:1.34rem}.section-title small{color:var(--muted)}.category-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.cat{min-height:118px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;text-align:left}.cat b{display:block;font-size:1.02rem}.cat span{color:var(--muted);font-size:.84rem}.cat strong{display:block;margin-top:7px;color:var(--accent)}
.search{width:100%;min-height:50px;border:1px solid var(--line);background:var(--card);border-radius:16px;padding:13px 16px;margin:12px 0;font-size:16px}.filter-row{display:flex;gap:8px;overflow:auto;padding:2px 2px 8px;scrollbar-width:none}.filter-row::-webkit-scrollbar{display:none}.chip{white-space:nowrap;min-height:44px;border:1px solid var(--line);background:var(--card);border-radius:99px;padding:8px 13px}.chip.active{background:var(--accent2);border-color:var(--accent);font-weight:700}.term-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}.term-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;position:relative;min-height:195px}.term-card h3{font-family:"STKaiti","KaiTi","Songti SC",serif;font-size:1.33rem;margin:0 88px 3px 0}.meta{font-size:.76rem;color:var(--muted)}.term-card p{font-size:.91rem;margin:10px 0 14px}.status-pill{position:absolute;right:12px;top:12px;border:1px solid var(--line);background:white;border-radius:99px;min-height:34px;padding:5px 9px;font-size:.72rem}.status-pill.stage-1{background:#f2eee6}.status-pill.stage-2{background:#f4ead4;border-color:#d9c595}.status-pill.stage-3{background:#dcebdc;border-color:#9fc4a5;color:#31563a}.detail-btn{min-height:44px;border:0;background:var(--accent2);padding:8px 13px;border-radius:11px;font-weight:650}.empty{text-align:center;color:var(--muted);padding:42px 12px}.read-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px;margin:12px 0}.read-card.current{border-color:var(--accent);box-shadow:0 0 0 3px rgba(109,93,63,.08)}.read-card h3{margin:0 0 10px}.read-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.original{font-family:"STKaiti","KaiTi","Songti SC",serif;font-size:1.18rem;background:#f3ede1;padding:16px;border-radius:14px;margin:12px 0}.label{font-size:.76rem;color:var(--muted);font-weight:750}.focus{border-left:4px solid var(--accent);padding-left:12px;color:var(--accent)}.reading-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:10px 13px}.reading-toolbar select{min-height:40px;border:1px solid var(--line);border-radius:10px;background:white;padding:5px 8px}
.review-box{max-width:700px;margin:18px auto;background:var(--card);border:1px solid var(--line);border-radius:24px;padding:28px;text-align:center;box-shadow:var(--shadow)}.review-box .big{font-family:"STKaiti","KaiTi","Songti SC",serif;font-size:2.35rem;margin:22px}.answer{display:none;text-align:left;background:#f4efe6;border-radius:16px;padding:18px;margin:16px 0}.answer.show{display:block}.review-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.review-actions button{min-height:52px;border:0;border-radius:13px;padding:10px 7px;font-weight:700}.forgot{background:#f3dfdc}.fuzzy{background:#f4ead4}.know{background:#dcebdc}.familiar{background:#dbe5ef}.quiz-options{display:grid;gap:10px;margin-top:18px}.quiz-options button{min-height:48px;border:1px solid var(--line);background:white;border-radius:13px;padding:11px}.quiz-options button.correct{background:#dcebdc}.quiz-options button.wrong{background:#f3dfdc}.recite-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:15px}.recite-group{min-height:72px;border:1px solid var(--line);background:white;border-radius:14px;padding:12px;text-align:left}.recite-list{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:18px 0}.recite-item{background:var(--accent2);border-radius:10px;padding:7px 10px}.completion{font-size:1.05rem}.modal{position:fixed;inset:0;background:rgba(25,22,18,.46);z-index:30;padding:calc(12px + env(safe-area-inset-top)) 12px calc(12px + env(safe-area-inset-bottom));display:flex;align-items:center;justify-content:center}.modal[hidden]{display:none}.modal-card{background:var(--card);border-radius:24px;max-width:650px;width:100%;max-height:90vh;overflow:auto;padding:26px;position:relative;-webkit-overflow-scrolling:touch}.close{position:sticky;float:right;right:0;top:0;z-index:2;border:0;background:var(--card);font-size:1.55rem;line-height:1;width:44px;height:44px;border-radius:50%}.modal h2{font-family:"STKaiti","KaiTi","Songti SC",serif;font-size:1.9rem;margin:0 44px 4px 0}.info-row{margin:15px 0}.memory{background:var(--accent2);border-radius:14px;padding:13px}.settings-section{border-top:1px solid var(--line);padding-top:17px;margin-top:17px}.settings-section:first-child{border-top:0;padding-top:0;margin-top:0}.settings-section h3{margin:0 0 7px}.settings-section p{color:var(--muted);font-size:.88rem}.sync-code-row{display:flex;gap:8px}.sync-code-row input{min-width:0;flex:1;min-height:48px;border:1px solid var(--line);border-radius:13px;padding:10px 12px;text-transform:uppercase;font-size:16px}.button-row{display:flex;gap:9px;flex-wrap:wrap}.button-row button{flex:1;min-width:120px}.install-steps{padding-left:1.25rem}.install-steps li{margin:.55rem 0}.toast{position:fixed;left:50%;bottom:calc(82px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:50;background:#2e2a24;color:white;border-radius:99px;padding:10px 16px;box-shadow:var(--shadow);max-width:calc(100% - 28px);text-align:center}.toast[hidden]{display:none}.offline-banner{position:fixed;top:0;left:0;right:0;z-index:60;background:#6c5530;color:white;text-align:center;padding:7px 12px calc(7px + env(safe-area-inset-top));font-size:.8rem}.offline-banner[hidden]{display:none}.foot{margin-top:38px;color:var(--muted);font-size:.76rem;border-top:1px solid var(--line);padding-top:18px}.foot a{color:var(--accent)}
@media(max-width:850px){:root{font-size:17px}.category-grid{grid-template-columns:repeat(2,1fr)}.term-grid{grid-template-columns:repeat(2,1fr)}.top{align-items:flex-start}.header-actions{align-items:flex-end;flex-direction:column}.brand p{display:none}}
@media(max-width:560px){.app{padding-left:12px;padding-right:12px;padding-bottom:calc(92px + env(safe-area-inset-bottom))}.top{gap:10px;flex-direction:column;align-items:stretch}.brand h1{font-size:1.42rem;white-space:nowrap}.header-actions{gap:8px;flex-direction:row;align-items:center;justify-content:space-between}.font-controls{gap:4px}.iconbtn{min-height:42px}.nav{position:fixed;bottom:0;top:auto;left:0;right:0;padding:8px 10px calc(8px + env(safe-area-inset-bottom));background:rgba(245,243,238,.97);box-shadow:0 -8px 24px rgba(59,48,31,.08)}.nav button{min-height:46px;padding:8px 2px;font-size:.79rem}.hero{padding:20px}.stats{grid-template-columns:repeat(2,1fr);gap:8px}.main-actions{grid-template-columns:1fr}.term-grid{grid-template-columns:1fr}.category-grid{grid-template-columns:1fr 1fr}.cat{min-height:108px;padding:14px}.review-actions{grid-template-columns:repeat(2,1fr)}.modal-card{padding:20px}.notice-card{align-items:flex-start}.reading-toolbar{align-items:flex-start;flex-direction:column}.recite-grid{grid-template-columns:1fr}.toast{bottom:calc(84px + env(safe-area-inset-bottom))}}
@media(min-width:700px) and (max-width:1100px){.app{max-width:920px}.term-grid{grid-template-columns:repeat(2,1fr)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.progress{transition:none}}