:root{--void:#08090b;--bg:#0c0d10;--surface:#131519;--surface-2:#191c22;--surface-3:#21252d;--border:#2a2e37;--border-soft:#1d2027;--amber:#ffb800;--amber-bright:#ffd54a;--amber-dim:#8a6600;--amber-wash:#ffb80014;--amber-wash-strong:#ffb80029;--ink:#eef0f3;--ink-soft:#a6acb8;--ink-faint:#626874;--good:#4ade80;--danger:#f0654f;--info:#7c8cff;--font-display:"Space Grotesk", "Segoe UI", system-ui, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;--font-body:"Inter", "Segoe UI", system-ui, sans-serif;--r-sm:4px;--r-md:6px;--r-lg:10px;--shadow-pop:0 12px 32px -12px #0009;--header-h:64px}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased;margin:0;padding:0}body{background-image:linear-gradient(180deg, var(--void) 0%, var(--bg) 320px), repeating-linear-gradient(0deg, #ffffff03 0px, #ffffff03 1px, transparent 1px, transparent 3px);min-height:100vh}#root{min-height:100vh}h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:-.01em;margin:0}button{font-family:var(--font-body)}::selection{background:var(--amber-wash-strong);color:var(--amber-bright)}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--surface-3);border:2px solid var(--bg);border-radius:8px}::-webkit-scrollbar-thumb:hover{background:var(--amber-dim)}a{color:var(--amber)}:focus-visible{outline:2px solid var(--amber);outline-offset:2px}@media (prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important}}.cs-root{position:relative}.cs-root--settings{width:100%;margin-bottom:10px}.cs-root--header{max-width:300px}.cs-trigger{text-align:left;cursor:pointer;border-radius:var(--r-md);background:var(--surface-2);border:1px solid var(--border);width:100%;color:var(--ink);justify-content:space-between;align-items:center;gap:8px;transition:all .18s;display:flex}.cs-root--settings .cs-trigger{padding:10px 14px}.cs-root--header .cs-trigger{background:0 0;border-color:#0000;padding:6px 10px}.cs-trigger:hover{border-color:var(--amber-dim);background:var(--surface-3)}.cs-root--header .cs-trigger:hover{background:var(--surface-2);border-color:var(--border)}.cs-trigger--open{border-color:var(--amber-dim)!important;background:var(--surface-3)!important}.cs-trigger__content{flex:1;align-items:center;gap:8px;min-width:0;display:flex}.cs-trigger__title{font-family:var(--font-display);white-space:nowrap;text-overflow:ellipsis;font-weight:700;overflow:hidden}.cs-root--settings .cs-trigger__title{font-size:13px}.cs-root--header .cs-trigger__title{font-size:15px}.cs-trigger__badge{font-family:var(--font-mono);letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft);background:var(--surface);border:1px solid var(--border);border-radius:3px;flex-shrink:0;padding:1px 6px;font-size:9px;font-weight:700}.cs-chevron{color:var(--ink-faint);flex-shrink:0;transition:transform .2s cubic-bezier(.34,1.56,.64,1),color .15s}.cs-trigger:hover .cs-chevron{color:var(--amber)}.cs-chevron--open{transform:rotate(180deg);color:var(--amber)!important}.cs-dropdown{z-index:50;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--shadow-pop), 0 0 0 1px #0003;padding:6px;animation:.15s cubic-bezier(.16,1,.3,1) csSlideIn;position:absolute;top:calc(100% + 6px);left:0;right:0;overflow:hidden}.cs-dropdown--header{min-width:340px}@keyframes csSlideIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.cs-dropdown__label{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);padding:6px 10px 8px;font-size:9.5px;font-weight:700}.cs-option{border-radius:var(--r-sm);width:100%;color:var(--ink);cursor:pointer;text-align:left;background:0 0;border:1px solid #0000;align-items:center;gap:10px;padding:10px;transition:all .12s;display:flex}.cs-option:hover{background:var(--surface-2);border-color:var(--border-soft)}.cs-option--active{background:var(--amber-wash);border-color:#ffb80026!important}.cs-option--active:hover{background:var(--amber-wash-strong)}.cs-option__radio{border:1.5px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:18px;height:18px;transition:border-color .15s;display:flex}.cs-option:hover .cs-option__radio{border-color:var(--ink-faint)}.cs-option--active .cs-option__radio{border-color:var(--amber)}.cs-option__dot{background:var(--amber);border-radius:50%;width:0;height:0;transition:all .18s cubic-bezier(.34,1.56,.64,1)}.cs-option__dot--on{width:10px;height:10px}.cs-option__content{flex:1;min-width:0}.cs-option__title{color:var(--ink);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;line-height:1.3;overflow:hidden}.cs-option--active .cs-option__title{color:var(--amber-bright)}.cs-option__meta{color:var(--ink-faint);font-size:11px;font-family:var(--font-mono);align-items:center;gap:6px;margin-top:2px;display:flex}.cs-option__tag{letter-spacing:.04em;color:var(--ink-faint);background:var(--surface-3);border:1px solid var(--border);border-radius:3px;padding:0 5px;font-size:8.5px;font-weight:700}.cs-option--active .cs-option__tag{color:var(--amber);background:#ffb80014;border-color:#ffb80033}.cs-check{color:var(--amber);flex-shrink:0}.app-header{z-index:30;height:var(--header-h);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-soft);background:#0c0d10e0;position:sticky;top:0}.app-header__inner{justify-content:space-between;align-items:center;gap:16px;max-width:1320px;height:100%;margin:0 auto;padding:0 24px;display:flex}.brand{align-items:center;gap:12px;min-width:0;display:flex}.brand__mark{border-radius:var(--r-sm);background:var(--surface-2);border:1px solid var(--border);width:36px;height:36px;font-family:var(--font-mono);color:var(--amber);flex-shrink:0;justify-content:center;align-items:center;font-size:13px;font-weight:700;display:flex}.brand__text{min-width:0}.brand__text h1{color:var(--ink);white-space:nowrap;text-overflow:ellipsis;max-width:320px;font-size:16px;font-weight:700;overflow:hidden}.course-switcher{background:var(--surface-2);border:1px solid var(--border);color:var(--ink);font-size:14px;font-weight:700;font-family:var(--font-display);border-radius:var(--r-sm);cursor:pointer;max-width:260px;padding:5px 8px}.course-switcher:hover{border-color:var(--amber-dim)}.brand__sub{color:var(--ink-faint);font-size:11px;font-family:var(--font-mono);white-space:nowrap;margin:3px 0 0}.header-mid{flex:1;justify-content:center;align-items:center;gap:18px;min-width:0;display:flex}.clock{font-family:var(--font-mono);color:var(--ink-soft);white-space:nowrap;letter-spacing:.01em;font-variant-numeric:tabular-nums;font-size:12.5px}.mini-progress{align-items:center;gap:8px;display:none}.mini-progress__bar{background:var(--surface-3);border:1px solid var(--border-soft);border-radius:3px;width:120px;height:6px;overflow:hidden}.mini-progress__bar>div{background:linear-gradient(90deg, var(--amber-dim), var(--amber));height:100%;transition:width .4s}.mini-progress__label{font-family:var(--font-mono);color:var(--amber);font-size:11.5px;font-weight:600}@media (width>=720px){.mini-progress{display:flex}}.header-actions{flex-shrink:0;align-items:center;gap:8px;display:flex}.icon-btn{border-radius:var(--r-sm);background:var(--surface-2);border:1px solid var(--border);height:36px;color:var(--ink-soft);cursor:pointer;align-items:center;gap:6px;padding:0 10px;transition:border-color .15s,color .15s,background .15s;display:flex}.icon-btn:hover{border-color:var(--amber-dim);color:var(--amber);background:var(--surface-3)}.streak-btn{color:var(--amber)}.streak-count{font-family:var(--font-mono);font-size:13px;font-weight:700}.stats-bar{grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:24px;display:grid}@media (width>=720px){.stats-bar{grid-template-columns:1.4fr repeat(4,1fr)}}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);min-width:0;padding:16px}.stat-card--hero{grid-column:span 2}@media (width>=720px){.stat-card--hero{grid-column:span 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.4s}.toolbar{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px;display:flex}.search-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);min-width:200px;height:40px;color:var(--ink-faint);flex:1;align-items:center;gap:8px;padding:0 12px;transition:border-color .15s;display:flex}.search-box:focus-within{border-color:var(--amber-dim)}.search-box input{color:var(--ink);background:0 0;border:none;outline:none;flex:1;height:100%;font-size:13.5px}.search-box input::placeholder{color:var(--ink-faint)}.search-clear{color:var(--ink-faint);cursor:pointer;background:0 0;border:none;padding:4px;font-size:11px}.search-clear:hover{color:var(--amber)}.toolbar__actions{flex-wrap:wrap;gap:8px;display:flex}.tb-btn{border-radius:var(--r-md);background:var(--surface);border:1px solid var(--border);height:40px;color:var(--ink-soft);cursor:pointer;white-space:nowrap;padding:0 14px;font-size:12.5px;transition:all .15s}.tb-btn:hover{border-color:var(--amber-dim);color:var(--amber)}.tb-btn--danger{color:var(--danger)}.tb-btn--danger:hover{border-color:var(--danger);color:var(--danger);background:#f0654f14}.lecture-row{border-radius:var(--r-sm);border:1px solid #0000;align-items:center;gap:12px;padding:10px 14px;transition:background .15s,border-color .15s;display:flex}.lecture-row__number{text-align:right;min-width:22px;font-family:var(--font-mono);color:var(--ink-faint);-webkit-user-select:none;user-select:none;flex-shrink:0;font-size:11px}.lecture-row:hover{background:var(--surface-2)}.lecture-row--today{background:var(--amber-wash);border-color:#ffb8004d}.lecture-row--today:hover{background:var(--amber-wash-strong)}.lecture-row--watched{opacity:.8}.lecture-row--watched:hover{opacity:1}.lecture-row--watched .lecture-row__title{color:var(--ink-faint);text-decoration:line-through;-webkit-text-decoration-color:var(--border);text-decoration-color:var(--border)}.lecture-row--watched .lecture-row__number{color:var(--good);opacity:.5}.lecture-row--watched .lecture-row__dur{opacity:.5}.plan-check{cursor:pointer;flex-shrink:0;display:flex}.plan-check input{display:none}.plan-check__box{border:1.5px solid var(--border);background:var(--surface-2);width:18px;height:18px;color:var(--void);border-radius:4px;justify-content:center;align-items:center;transition:all .15s;display:flex}.plan-check input:checked+.plan-check__box{background:var(--amber);border-color:var(--amber)}.plan-check:hover .plan-check__box{border-color:var(--amber)}.watched-toggle{cursor:pointer;background:0 0;border:none;flex-shrink:0;padding:0;display:flex}.watched-toggle__ring{border:1.5px solid var(--border);width:18px;height:18px;color:var(--void);border-radius:50%;justify-content:center;align-items:center;transition:all .15s;display:flex}.watched-toggle:hover .watched-toggle__ring{border-color:var(--good)}.watched-toggle__ring--on{background:var(--good);border-color:var(--good)}.lecture-row__title{min-width:0;color:var(--ink);text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:13.5px;overflow:hidden}.today-pill{font-family:var(--font-mono);letter-spacing:.05em;color:var(--amber);background:var(--amber-wash-strong);border:1px solid #ffb80066;border-radius:3px;flex-shrink:0;padding:2px 6px;font-size:9px;font-weight:700}.completed-pill{font-family:var(--font-mono);letter-spacing:.05em;color:var(--good);background:#4ade801a;border:1px solid #4ade8040;border-radius:3px;flex-shrink:0;padding:2px 6px;font-size:9px;font-weight:700}.lecture-row__dur{font-family:var(--font-mono);color:var(--ink-faint);text-align:right;flex-shrink:0;min-width:68px;font-size:11.5px}@media (width<=560px){.lecture-row__title{white-space:normal;font-size:13px}.lecture-row{flex-wrap:wrap}}.section-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);margin-bottom:10px;overflow:hidden}.section-card--open{border-color:var(--border)}.section-card--complete{border-color:#4ade8040}.section-card__head{background:var(--surface-2);cursor:pointer;text-align:left;width:100%;color:var(--ink);border:none;align-items:center;gap:12px;padding:14px 16px;display:flex}.section-card__head:hover{background:var(--surface-3)}.section-card__chevron{color:var(--ink-faint);flex-shrink:0;transition:transform .18s;display:flex}.section-card--open .section-card__chevron{color:var(--amber);transform:rotate(90deg)}.section-card__number{font-family:var(--font-mono);color:var(--amber-dim);background:var(--surface);border:1px solid var(--border);border-radius:4px;flex-shrink:0;padding:3px 6px;font-size:11px}.section-card__title{text-overflow:ellipsis;white-space:nowrap;flex:1;align-items:center;gap:8px;min-width:0;font-size:14px;font-weight:600;display:flex;overflow:hidden}.project-pill{font-family:var(--font-mono);color:var(--ink-soft);background:var(--surface);border:1px solid var(--border);letter-spacing:.03em;border-radius:3px;flex-shrink:0;padding:2px 6px;font-size:9px;font-weight:700}.today-dot{background:var(--amber);border-radius:50%;flex-shrink:0;width:7px;height:7px;box-shadow:0 0 6px 1px #ffb80099}.section-card__mini-bar{background:var(--surface-3);border:1px solid var(--border-soft);border-radius:3px;flex-shrink:0;width:70px;height:5px;display:none;overflow:hidden}.section-card__mini-bar span{background:linear-gradient(90deg, var(--amber-dim), var(--amber));height:100%;display:block}@media (width>=640px){.section-card__mini-bar{display:block}}.section-card__meta{font-family:var(--font-mono);color:var(--ink-faint);white-space:nowrap;flex-shrink:0;font-size:11px}.meta-left{color:var(--amber-dim)}.section-card__body{border-top:1px solid var(--border-soft);padding:6px 8px 10px}.today-card{background:var(--surface);border:1px solid var(--amber-dim);border-radius:var(--r-lg);padding:16px}.today-card__head{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.today-card__head h3{color:var(--ink);align-items:center;gap:8px;font-size:13.5px;display:flex}.auto-tag{font-family:var(--font-mono);background:var(--amber-wash-strong);color:var(--amber);letter-spacing:.03em;border-radius:3px;padding:1px 5px;font-size:9px}.today-card__total{font-family:var(--font-mono);color:var(--amber);font-size:15px;font-weight:700}.today-card__progress{margin-bottom:14px}.today-card__progress-label{color:var(--ink-faint);font-size:11px;font-family:var(--font-mono);margin-top:6px}.today-card__empty{color:var(--ink-faint);border-top:1px dashed var(--border);padding:12px 0;font-size:12.5px;line-height:1.6}.today-card__list{border-top:1px dashed var(--border);scrollbar-width:none;-ms-overflow-style:none;max-height:340px;margin:0;padding:10px 0 0;list-style:none;overflow-y:auto}.today-card__list::-webkit-scrollbar{width:0;height:0;display:none}.today-card__list li{align-items:center;gap:8px;padding:6px 2px;font-size:12.5px;display:flex}.today-card__item--done .today-card__item-title{color:var(--ink-faint);text-decoration:line-through;-webkit-text-decoration-color:var(--border);text-decoration-color:var(--border)}.today-card__check{border:1.5px solid var(--border);width:15px;height:15px;color:var(--void);cursor:pointer;background:0 0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;padding:0;display:flex}.today-card__item--done .today-card__check{background:var(--good);border-color:var(--good)}.today-card__item-number{text-align:right;min-width:18px;font-family:var(--font-mono);color:var(--ink-faint);flex-shrink:0;font-size:10px}.today-card__item-title{min-width:0;color:var(--ink);text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.today-card__item-dur{font-family:var(--font-mono);color:var(--ink-faint);flex-shrink:0;font-size:10.5px}.today-card__practice{border-top:1px dashed var(--border);margin-top:12px;padding-top:12px}.today-card__practice-btn{border-radius:var(--r-sm);border:1px dashed var(--border);width:100%;color:var(--ink-faint);cursor:pointer;background:0 0;padding:9px;font-size:11.5px;transition:all .15s}.today-card__practice-btn:hover:not(:disabled){color:var(--ink-soft);border-color:var(--ink-faint)}.today-card__practice-btn:disabled{opacity:.45;cursor:not-allowed}.today-card__practice-active{color:var(--ink-soft);justify-content:space-between;align-items:center;gap:8px;font-size:11.5px;display:flex}.today-card__practice-active button{border:1px solid var(--border);color:var(--ink-faint);cursor:pointer;background:0 0;border-radius:4px;padding:3px 8px;font-size:10.5px}.today-card__practice-active button:hover{color:var(--danger);border-color:var(--danger)}.psp-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);margin-top:14px;padding:16px}.psp-card__head{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.psp-card__head h3{color:var(--ink);font-size:13px}.psp-card__summary{font-family:var(--font-mono);color:var(--ink-faint);background:var(--surface-2);border:1px solid var(--border);border-radius:3px;padding:2px 8px;font-size:10.5px;font-weight:600}.psp-list{scrollbar-width:none;-ms-overflow-style:none;flex-direction:column;gap:4px;max-height:400px;margin:0;padding:0;list-style:none;display:flex;overflow-y:auto}.psp-list::-webkit-scrollbar{width:0;height:0;display:none}.psp-item{border-radius:var(--r-md);cursor:pointer;background:var(--surface-2);border:1px solid #0000;padding:10px;transition:all .15s}.psp-item:hover{background:var(--surface-3);border-color:var(--border-soft)}.psp-item--complete{background:#4ade8008;border-color:#4ade801a}.psp-item--complete:hover{background:#4ade800f;border-color:#4ade8033}.psp-item__top{justify-content:space-between;align-items:center;gap:8px;margin-bottom:8px;display:flex}.psp-item__left{flex:1;align-items:center;gap:8px;min-width:0;display:flex}.psp-item__number{font-family:var(--font-mono);color:var(--amber-dim);background:var(--surface);border:1px solid var(--border);border-radius:3px;flex-shrink:0;padding:1px 5px;font-size:10px;font-weight:600}.psp-item--complete .psp-item__number{color:var(--good);background:#4ade800f;border-color:#4ade8033}.psp-item__title{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:500;overflow:hidden}.psp-item--complete .psp-item__title{color:var(--ink-soft)}.psp-item__right{flex-shrink:0}.psp-item__pct{font-family:var(--font-mono);color:var(--amber);font-size:11px;font-weight:700}.psp-item__done-tag{font-family:var(--font-mono);color:var(--good);letter-spacing:.02em;background:#4ade801a;border:1px solid #4ade8040;border-radius:3px;align-items:center;gap:4px;padding:2px 7px;font-size:9.5px;font-weight:700;display:flex}.psp-item__bar-wrap{margin-bottom:6px}.psp-item__bar{background:var(--surface);border:1px solid var(--border-soft);border-radius:3px;height:5px;overflow:hidden}.psp-item__bar-fill{background:linear-gradient(90deg, var(--amber-dim), var(--amber));border-radius:3px;height:100%;transition:width 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var(--border-soft);flex-shrink:0;justify-content:space-between;align-items:center;padding:18px 20px;display:flex}.drawer__head h2{color:var(--ink);font-size:15px;font-weight:700}.drawer__close{border-radius:var(--r-sm);background:var(--surface-2);border:1px solid var(--border);width:30px;height:30px;color:var(--ink-soft);cursor:pointer;justify-content:center;align-items:center;font-size:13px;display:flex}.drawer__close:hover{color:var(--amber);border-color:var(--amber-dim)}.drawer__body{flex:1;padding:20px;overflow-y:auto}@media (width<=480px){.drawer{width:100vw}}.cal-summary{grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px;display:grid}.cal-stat{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-md);text-align:center;padding:12px 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