@import "https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap";
:root{--bg-base:#f7f5f2;--bg-card:#fff;--bg-subtle:#f0ede8;--text-primary:#1c1917;--text-secondary:#57534e;--text-muted:#a8a29e;--accent:#c4705a;--accent-light:#f2e8e5;--accent-hover:#b05f4a;--warm-light:#c8b89a;--warm-dark:#c9866a;--ring-glow:0 0 0 3px #c9866a33;--teal:#7a9e8e;--teal-light:#e8f0ec;--success:#6b9e7a;--success-light:#ebf4ee;--error:#c4705a;--error-light:#f2e8e5;--warning:#c9a96e;--warning-light:#f5edd8;--purple:#8b7ec8;--purple-light:#eeeaf8;--repeat-bg:#fff3e0;--repeat-color:#e65100;--border:#e8e4de;--border-strong:#d4cfc8;--shadow-sm:0 1px 3px #1c19170f;--shadow-md:0 4px 12px #1c191714;--shadow-lg:0 8px 28px #1c19171a;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--font:"Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;--nav-height:60px;--text-xs:12px;--text-sm:13px;--text-base:15px;--text-md:16px;--text-lg:18px;--text-xl:20px;--text-2xl:24px;--text-3xl:28px}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:var(--font);background:var(--bg-base);color:var(--text-primary);line-height:1.7;font-size:var(--text-base);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font-family:var(--font);font-size:var(--text-base);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;outline:none;transition:all .18s}button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button:disabled{cursor:not-allowed}input,textarea{font-family:var(--font);font-size:var(--text-base);outline:none}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:2px}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInScale{0%{opacity:0;transform:scale(.97)}to{opacity:1;transform:scale(1)}}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-4px)}40%{transform:translate(4px)}60%{transform:translate(-3px)}80%{transform:translate(3px)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}@keyframes correctPop{0%{transform:scale(1)}50%{transform:scale(1.02)}to{transform:scale(1)}}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton{background:linear-gradient(90deg, var(--bg-subtle) 25%, var(--bg-card) 50%, var(--bg-subtle) 75%);border-radius:var(--radius-md);background-size:200% 100%;animation:1.5s infinite shimmer}.tag{white-space:nowrap;border-radius:5px;align-items:center;padding:3px 8px;font-size:12px;font-weight:600;line-height:1.4;display:inline-flex}.type-badge{color:#fff;border-radius:5px;align-items:center;padding:3px 9px;font-size:12px;font-weight:700;line-height:1.4;display:inline-flex}.modal-overlay{z-index:300;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#1c191780;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.modal-box{background:var(--bg-card);border-radius:var(--radius-xl);text-align:center;width:100%;max-width:320px;padding:32px 28px;animation:.25s fadeInScale}.modal-title{font-size:var(--text-lg);color:var(--text-primary);margin-bottom:12px;font-weight:700}.modal-desc{font-size:var(--text-sm);color:var(--text-muted);margin-bottom:28px;line-height:1.7}.modal-btns{grid-template-columns:1fr 1fr;gap:10px;display:grid}.modal-btn-cancel{background:var(--bg-subtle);height:46px;color:var(--text-secondary);border-radius:var(--radius-md);font-size:var(--text-base);font-weight:500}.modal-btn-cancel:hover{background:var(--border)}.modal-btn-danger{color:#fff;border-radius:var(--radius-md);height:46px;font-size:var(--text-base);background:#dc2626;font-weight:600}.modal-btn-danger:hover{background:#b91c1c}.btn-danger-outline{border:1.5px solid var(--border);border-radius:var(--radius-md);height:40px;font-size:var(--text-sm);color:var(--text-muted);background:var(--bg-card);white-space:nowrap;padding:0 16px;transition:all .18s}.btn-danger-outline:hover{color:#dc2626;background:#fef2f2;border-color:#dc2626}.btn-skip{border:1.5px solid var(--border);border-radius:var(--radius-md);height:52px;font-size:var(--text-sm);color:var(--text-muted);background:var(--bg-card);transition:all .18s}.btn-skip:hover{border-color:var(--border-strong);color:var(--text-secondary);background:var(--bg-subtle)}.mock-btn-short{display:none}@media (max-width:1023px){.mock-bar-hint,.hide-on-mobile,.mock-btn-full{display:none}.mock-btn-short{display:inline}.mock-pause-btn{line-height:1;font-size:16px!important}}.quiz-actions-inner{display:contents}.quiz-toolbar-btn,.quiz-progress{display:none}.quiz-nav-row{grid-template-columns:80px 1fr 80px;gap:8px;width:100%;display:grid}@media (max-width:1023px){.quiz-actions-inner{align-items:center;gap:8px;width:100%;display:flex}.quiz-toolbar-btn{flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.quiz-progress{flex-shrink:0;margin:0 2px;display:inline}.quiz-nav-row{flex:1;align-items:center;gap:6px;min-width:0;display:flex}.quiz-nav-row>button:first-child{flex:0 0 52px;font-size:12px}.quiz-nav-row>button:last-child{flex:0 0 48px;font-size:12px}.quiz-nav-row>button:nth-child(2){flex:1}.review-banner{display:none!important}}.quiz-toolbar-btn{border-radius:var(--radius-md);border:1.5px solid var(--border);background:var(--bg-card);height:36px;color:var(--text-secondary);font-size:var(--text-sm);cursor:pointer;white-space:nowrap;padding:0 14px;font-weight:600;transition:all .15s}.quiz-toolbar-btn:hover{border-color:var(--purple);color:var(--purple)}.quiz-progress{font-size:var(--text-xs);color:var(--text-muted);font-weight:500}.page-shell{background:var(--bg-base);min-height:100vh}.home-container{max-width:960px;padding:0 20px;padding-bottom:calc(var(--nav-height) + 20px);margin:0 auto}@media (min-width:768px){.home-container{padding-bottom:60px}.subject-grid{grid-template-columns:repeat(2,1fr)!important}.quick-grid{grid-template-columns:repeat(auto-fit,minmax(80px,1fr))!important}}@media (max-width:767px){.quick-grid{scrollbar-width:none;padding-bottom:2px;overflow-x:auto;grid-template-columns:repeat(auto-fit,minmax(78px,1fr))!important}.quick-grid::-webkit-scrollbar{display:none}.quick-grid>button{min-width:78px;min-height:72px}}.content-page{background:var(--bg-base);max-width:760px;min-height:100vh;padding-bottom:calc(var(--nav-height) + 20px);margin:0 auto}@media (min-width:768px){.content-page{padding-bottom:60px}}.quiz-layout{min-height:100vh;display:flex}.quiz-sidebar{display:none}.quiz-main{min-width:0;max-width:600px;padding-bottom:calc(var(--nav-height) + 24px);flex:1;margin:0 auto}.quiz-aside{display:none}.mock-card-strip{scrollbar-width:none;gap:6px;margin-bottom:2px;padding-bottom:12px;display:flex;overflow-x:auto}@media (min-width:1024px){.quiz-layout{align-items:flex-start;gap:32px;max-width:1280px;margin:0 auto;padding:0 40px}.quiz-sidebar{flex-direction:column;flex-shrink:0;gap:4px;width:200px;padding-top:72px;display:flex;position:sticky;top:72px}.quiz-main{flex:1;max-width:680px;padding-bottom:80px}.quiz-aside{flex-direction:column;flex-shrink:0;gap:12px;width:200px;padding-top:72px;padding-bottom:80px;display:flex;position:sticky;top:72px}.mock-card-strip{display:none!important}}.bottom-nav{height:var(--nav-height);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid var(--border);z-index:200;padding-bottom:env(safe-area-inset-bottom,0px);background:#f7f5f2f7;display:flex;position:fixed;bottom:0;left:0;right:0}.bottom-nav-item{color:var(--text-muted);cursor:pointer;font-size:11px;font-weight:500;font-family:var(--font);-webkit-tap-highlight-color:transparent;background:0 0;border:none;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:3px;transition:color .15s;display:flex}.bottom-nav-item:hover{color:var(--text-primary)}.bottom-nav-item.active{color:var(--accent)}.bottom-nav-item .nav-icon{font-size:20px;line-height:1}@media (min-width:768px){.bottom-nav{display:none}}.print-only{display:none}@media print{body *{visibility:hidden!important}.print-only{visibility:visible!important;display:block!important;position:absolute!important;top:0!important;left:0!important}.print-only *{visibility:visible!important}body{background:#fff!important}.print-paper{color:#111;width:100%;max-width:none;margin:0;padding:0;font-family:Microsoft YaHei,Arial,sans-serif}.print-paper h1{text-align:center;margin:0 0 8px;font-size:22px}.print-meta{text-align:center;color:#666;margin:0 0 18px;font-size:12px}.print-question{break-inside:avoid;page-break-inside:avoid;border-bottom:1px solid #ddd;padding:12px 0}.print-question-head{justify-content:space-between;gap:12px;margin-bottom:8px;font-size:14px;display:flex!important}.print-question-head span{color:#666;font-size:12px}.print-material{background:#f7f7f7;border:1px solid #ddd;margin:8px 0;padding:8px 10px}.print-material p,.print-stem,.print-answer p{white-space:pre-wrap;margin:6px 0;font-size:13px;line-height:1.7}.print-options{margin:8px 0 0 18px;padding:0}.print-options li{margin-bottom:4px;font-size:13px;line-height:1.7}.print-answer{background:#fafafa;border:1px solid #ddd;margin-top:10px;padding:8px 10px}}.stage-bar{border-radius:var(--radius-md);background:#e8e4deb8;grid-template-columns:1fr 1fr 1fr;gap:4px;padding:4px;display:grid}.stage-btn{border-radius:var(--radius-sm);font-size:var(--text-sm);color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:10px 4px;font-weight:600;transition:background .15s,color .15s,box-shadow .15s}.stage-btn:hover{color:var(--accent-hover);background:#fff6}.stage-btn.active{background:var(--bg-card);color:var(--accent);box-shadow:var(--shadow-sm)}.section-title{font-size:var(--text-xs);color:var(--text-muted);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:14px;padding-left:2px;font-weight:600}.subject-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.home-action-panel{grid-template-columns:1fr;gap:10px;margin-bottom:26px;display:grid}.home-action-panel .resume-strip{margin-bottom:0}.primary-start-btn{border-radius:var(--radius-md);background:var(--accent);color:#fff;flex-direction:column;justify-content:center;align-items:center;gap:2px;min-height:66px;padding:10px 16px;font-weight:700;display:flex;box-shadow:0 14px 30px #c4705a47}.primary-start-btn:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 12px 28px #c4705a42}.primary-start-btn span{font-size:var(--text-lg);line-height:1.25}.primary-start-btn small{font-size:var(--text-xs);opacity:.82;font-weight:500;line-height:1.3}.subject-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);text-align:left;cursor:pointer;min-width:0;min-height:48px;padding:10px 40px 10px 14px;transition:border-color .18s,box-shadow .18s,transform .18s,background .18s;position:relative}.subject-card:hover{border-color:var(--warm-light);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.subject-card.active{background:var(--bg-card)}.subject-card.active.accent{border-color:var(--accent);box-shadow:0 0 0 2px #c4705a1f}.subject-card.active.teal{border-color:var(--teal);box-shadow:0 0 0 2px #7a9e8e1f}.subject-badge{background:var(--bg-subtle);color:var(--text-muted);font-size:var(--text-xs);white-space:nowrap;border-radius:.5rem;flex:none;align-items:center;margin-bottom:0;padding:2px 7px;font-weight:700;line-height:1.4;transition:all .2s;display:inline-flex}.subject-card.active.accent .subject-badge{background:var(--warm-dark);color:var(--bg-card)}.subject-card.active.teal .subject-badge{background:var(--teal);color:var(--bg-card)}.subject-title{font-size:var(--text-sm);text-overflow:ellipsis;white-space:nowrap;min-width:0;margin-bottom:0;font-weight:700;overflow:hidden}.subject-desc,.subject-status{display:none}.subject-card:hover .subject-status{color:var(--text-secondary)}.subject-card.active.accent .subject-status{color:var(--accent)}.subject-card.active.teal .subject-status{color:var(--teal)}.subject-check{background:var(--accent-light);opacity:0;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;font-size:12px;font-weight:700;transition:all .2s;display:flex;position:absolute;top:50%;right:12px;transform:translateY(-50%)scale(.8)}.subject-card.active .subject-check{opacity:1;transform:translateY(-50%)scale(1)}.subject-card.active.accent .subject-check{color:var(--accent)}.subject-card.active.teal .subject-check{background:var(--teal-light);color:var(--teal)}.resume-strip{background:var(--bg-subtle);border-radius:var(--radius-sm);text-align:left;border:none;justify-content:space-between;align-items:center;width:100%;margin-bottom:0;padding:10px 14px;transition:border-color .15s,box-shadow .15s,background .15s,transform .15s;display:flex}.resume-strip:hover{box-shadow:none;background:#e8e4dec2;transform:none}.home-container>div:has(.subject-grid)+.resume-strip{display:none}.subject-meta{align-items:center;gap:9px;min-width:0;min-height:24px;display:flex}@media (max-width:767px){.subject-grid{gap:10px;grid-template-columns:1fr!important}.subject-card{min-height:54px;padding:12px 42px 12px 14px}.subject-meta{gap:10px}.subject-title{font-size:var(--text-base)}}.quick-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;flex-direction:column;align-items:center;gap:7px;padding:16px 8px;transition:border-color .15s,transform .15s,box-shadow .15s,background .15s;display:flex;position:relative}.quick-item:hover{box-shadow:var(--shadow-sm);border-color:var(--warm-light);background:#fffdfc;transform:translateY(-2px)}.quick-item .quick-icon{color:#8b7355;font-size:20px;transition:color .15s}.quick-item .quick-label{font-size:var(--text-sm);color:var(--text-secondary);font-weight:500;transition:color .15s}.quick-item:hover .quick-label{color:var(--text-primary)}.quick-item .hot-badge{color:#fff;background:var(--accent);border-radius:3px;padding:1px 5px;font-size:10px;font-weight:700;position:absolute;top:7px;right:8px}.quick-item .quick-count{font-size:var(--text-xs);color:var(--accent);background:var(--accent-light);border-radius:10px;padding:2px 8px;font-weight:600}.sidebar-nav-btn{border-radius:var(--radius-md);color:var(--text-secondary);font-weight:400;font-size:var(--text-base);cursor:pointer;background:0 0;border:none;align-items:center;gap:10px;width:100%;padding:11px 14px;transition:background .12s,color .12s;display:flex}.sidebar-nav-btn:hover{color:var(--warm-dark)}.sidebar-nav-btn.active{background:var(--accent-light);color:var(--accent);font-weight:600}.filter-tag{border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);font-size:var(--text-sm);cursor:pointer;border-radius:20px;padding:6px 14px;font-weight:500;transition:all .15s}.filter-tag:hover{color:var(--warm-dark);border-color:var(--warm-dark)}.filter-tag.accent.active{border-color:var(--accent);background:var(--accent-light);color:var(--accent)}.filter-tag-sm{border:1px solid var(--border);background:var(--bg-card);color:var(--text-muted);font-size:var(--text-xs);white-space:nowrap;cursor:pointer;border-radius:16px;flex-shrink:0;padding:5px 12px;font-weight:500;transition:all .15s}.filter-tag-sm:hover{color:var(--warm-dark);border-color:var(--warm-dark)}.filter-tag-sm.active{border-color:var(--teal);color:var(--teal);background:#40a99414}.type-tag{border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);font-size:var(--text-sm);white-space:nowrap;cursor:pointer;border-radius:20px;flex-shrink:0;padding:6px 14px;font-weight:500;transition:all .15s}.type-tag:hover{color:var(--warm-dark);border-color:var(--warm-dark)}.type-tag.active{border-color:var(--accent);background:var(--accent-light);color:var(--accent)}.wrong-card{background:var(--bg-card);border-top:1px solid var(--border);border-right:1px solid var(--border);border-bottom:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;padding:16px;transition:box-shadow .15s}.wrong-card:hover{box-shadow:var(--shadow-md);border-right-color:var(--border-strong);border-bottom-color:var(--border-strong);border-top-color:var(--border-strong)}.fav-card{background:var(--bg-card);border-top:1px solid var(--border);border-right:1px solid var(--border);border-bottom:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;padding:16px;transition:box-shadow .15s}.fav-card:hover{box-shadow:var(--shadow-md);border-right-color:var(--border-strong);border-bottom-color:var(--border-strong);border-top-color:var(--border-strong)}.mock-card-grid{grid-template-columns:repeat(5,1fr);gap:6px;display:grid}.qnum-btn{height:32px;font-size:var(--text-xs);border:1px solid var(--border);background:var(--bg-subtle);color:var(--text-muted);cursor:pointer;border-radius:5px;font-weight:700;transition:border-color .15s,color .15s}.qnum-btn.q-current{border:1.5px solid var(--accent);background:var(--accent-light);color:var(--accent)}.qnum-btn.q-answered{border:1px solid var(--success);background:var(--success-light);color:var(--success)}.qnum-btn:hover{border-color:var(--warm-dark);color:var(--warm-dark)}.list-tab{cursor:pointer;transition:color .15s}.list-tab:hover span:first-child{color:var(--warm-dark)!important}.list-item{background:var(--bg-card);border:1.5px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;justify-content:space-between;align-items:center;padding:18px 16px;transition:all .15s;display:flex}.list-item:hover{border-color:var(--warm-light);box-shadow:var(--shadow-sm)}.list-item:hover .arrow{color:var(--warm-dark)}.list-item.is-new{background:var(--accent-light);border-color:#c4705a4d}.list-item.is-new:hover{border-color:var(--warm-dark)}.btn-icon{cursor:pointer;transition:color .15s,transform .15s}.btn-icon:hover{transform:scale(1.1);color:var(--accent)!important}.btn-outline{cursor:pointer;transition:all .15s}.btn-outline:hover{border-color:var(--accent)!important;color:var(--accent)!important}.btn-accent-outline{cursor:pointer;transition:all .15s}.btn-accent-outline:hover{background:var(--accent)!important;color:#fff!important;border-color:var(--accent)!important}.btn-favorite{border-radius:var(--radius-md);border:1.5px solid var(--border);background:var(--bg-card);width:100%;color:var(--text-secondary);font-size:var(--text-base);cursor:pointer;justify-content:center;align-items:center;gap:8px;padding:13px;font-weight:500;transition:all .15s;display:flex}.btn-favorite.fav-active{border-color:var(--accent);background:var(--accent-light);color:var(--accent)}.btn-favorite:hover{color:var(--accent);border-color:var(--accent);background:0 0}.btn-favorite.fav-active:hover{border-color:var(--warm-dark);background:0 0}.opt-btn{cursor:pointer;transition:all .15s}.opt-btn:hover{border-color:var(--warm-light);transform:translate(4px)}