:root{--app-bg: #0a0a0a;--app-surface: #1c1c1e;--app-surface-raised: #2c2c2e;--app-border: #3a3a3c;--app-text: #ffffff;--app-text-muted: #8e8e93;--app-primary: #0066ff;--app-primary-hover: #0052cc;--app-danger: #ff3b30;--app-danger-soft: rgba(255, 59, 48, .15);--app-radius: 14px;--app-radius-sm: 10px;--nav-height: 64px;--header-height: 52px;--lesson-lecture: #34c759;--lesson-practice: #ff9500;--lesson-lab: #007aff;--lesson-other: #ff3b30}*,*:before,*:after{box-sizing:border-box}body{margin:0;background:var(--app-bg);color:var(--app-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}.app{min-height:100vh;display:flex;flex-direction:column;background:var(--app-bg)}.app__content{flex:1;overflow-y:auto;padding-bottom:calc(var(--nav-height) + 8px)}.screen{min-height:calc(100vh - var(--nav-height))}.screen-header{display:flex;align-items:center;gap:12px;height:var(--header-height);padding:0 16px;position:sticky;top:0;z-index:10;background:var(--app-bg)}.screen-header__brand{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:var(--app-surface);color:var(--app-primary);flex-shrink:0}.screen-header__back{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;border:none;border-radius:50%;background:transparent;color:var(--app-text);cursor:pointer}.screen-header__title{flex:1;font-size:17px;font-weight:600;margin:0}.screen-body{padding:0 16px 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--app-radius);font-size:16px;font-weight:600;cursor:pointer;transition:opacity .15s,background .15s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--app-primary);color:#fff;padding:14px 20px;width:100%}.btn--primary:active:not(:disabled){background:var(--app-primary-hover)}.btn--secondary{background:var(--app-surface);color:var(--app-text);padding:14px 20px;width:100%;border:1px solid var(--app-border)}.btn--choice{background:var(--app-surface);color:var(--app-text);padding:16px 20px;width:100%;border:1px solid var(--app-border);font-weight:600}.btn--choice:active:not(:disabled){border-color:var(--app-primary);background:#0066ff14}.btn--danger{background:var(--app-danger);color:#fff;padding:14px 20px;width:100%}.btn--ghost{background:transparent;color:var(--app-primary);padding:10px 16px;width:auto}.input,.textarea{width:100%;background:var(--app-surface);border:1px solid var(--app-border);border-radius:var(--app-radius-sm);color:var(--app-text);font-size:16px;padding:14px 16px;outline:none}.input:focus,.textarea:focus{border-color:var(--app-primary)}.textarea{min-height:140px;resize:vertical;line-height:1.45}.input-wrap{position:relative}.input-wrap .input{padding-right:44px}.input-wrap__toggle{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--app-text-muted);cursor:pointer;padding:4px;display:flex}.search-bar{display:flex;align-items:center;gap:10px;background:var(--app-surface);border:1px solid var(--app-border);border-radius:var(--app-radius);padding:12px 16px;margin-bottom:16px}.search-bar__input{flex:1;background:none;border:none;color:var(--app-text);font-size:16px;outline:none}.search-bar__input::placeholder{color:var(--app-text-muted)}.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:var(--nav-height);display:flex;background:var(--app-surface);border-top:1px solid var(--app-border);padding-bottom:env(safe-area-inset-bottom,0);z-index:100}.bottom-nav__item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border:none;background:none;color:var(--app-text-muted);font-size:11px;cursor:pointer;padding:8px 4px}.bottom-nav__item--active{color:var(--app-primary)}.bottom-nav__icon{width:24px;height:24px}.date-picker{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;padding:4px 0 16px}.date-chip{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;min-width:0;height:56px;border:none;border-radius:12px;background:transparent;color:var(--app-text-muted);cursor:pointer;padding:6px 2px;transition:transform .2s ease,background .2s ease,color .2s ease}.date-chip:active{transform:scale(.94)}.date-chip--today:not(.date-chip--active){color:var(--app-primary)}.date-chip--active{background:var(--app-primary);color:#fff}.date-chip__day{font-size:12px;font-weight:500}.date-chip__num{font-size:16px;font-weight:700;margin-top:2px}.schedule-screen__title{text-align:center;font-size:17px;font-weight:600;padding:14px 16px 0;margin:0}.schedule-screen__body{padding-top:8px}.greeting-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;background:linear-gradient(135deg,#06f,#0052cc);border-radius:16px;padding:18px 16px;margin-bottom:16px;overflow:hidden;position:relative}.greeting-banner__text{flex:1;min-width:0;z-index:1}.greeting-banner__hi{margin:0 0 4px;font-size:17px;font-weight:700;color:#fff}.greeting-banner__sub{margin:0;font-size:13px;line-height:1.4;color:#ffffffd9}.greeting-banner__logo-img{width:64px;height:64px;border-radius:50%;object-fit:cover;flex-shrink:0;z-index:1;box-shadow:0 4px 16px #00000040}.week-range-nav{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:8px}.week-range-nav__label{font-size:15px;font-weight:600;min-width:120px;text-align:center}.week-range-nav__arrow{width:36px;height:36px;border:none;border-radius:50%;background:var(--app-surface);color:var(--app-text);font-size:22px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}.week-range-nav__arrow:disabled{opacity:.35;cursor:not-allowed}.schedule-list{display:flex;flex-direction:column;gap:12px;margin-top:4px}.schedule-row{display:flex;gap:10px;align-items:stretch}.schedule-row__time{flex:0 0 44px;font-size:12px;line-height:1.35;color:var(--app-text-muted);text-align:center;padding-top:14px}.lesson-card-v2{flex:1;min-width:0;background:var(--app-surface);border-radius:14px;border-left:4px solid var(--app-border);overflow:hidden}.lesson-card-v2--lecture{border-left-color:var(--lesson-lecture)}.lesson-card-v2--practice{border-left-color:var(--lesson-practice)}.lesson-card-v2--lab{border-left-color:var(--lesson-lab)}.lesson-card-v2--other{border-left-color:var(--lesson-other)}.lesson-card-v2__body{padding:12px 14px}.lesson-card-v2__title{font-size:15px;font-weight:600;margin:0 0 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