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button:hover{border-color:#ffffff4d}.lesson-list button.sel{border-color:var(--teal);background:#19c3c02b;box-shadow:inset 0 0 0 1px var(--teal)}.lesson-list .num{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;font-size:13px;font-weight:900;background:#ffffff1a}.lesson-list .num .ico{width:16px;height:16px}.lesson-list .done .num{background:var(--teal);color:#032a2c}.lesson-list .lname{display:flex;flex-direction:column;gap:1px;min-width:0}.lesson-list .skill{font-size:11.5px;color:var(--faint);font-weight:700;letter-spacing:.02em}.lesson-list .go{width:22px;height:22px;color:var(--teal-hi);opacity:0;transition:opacity .15s}.lesson-list .sel .go{opacity:1}.grad-card{padding-top:28px}.grad-badge{width:76px;height:76px;margin:0 auto 10px;border-radius:50%;display:grid;place-items:center;color:#fff;background:linear-gradient(180deg,#3ae0da,#0f9c99);box-shadow:0 0 0 8px #19c3c02e,0 12px 30px #0a8c8873;animation:popIn .6s var(--spring) .1s both}.grad-badge .ico{width:40px;height:40px}.overlay.layer{z-index:30;padding:0;align-items:flex-end;overflow:hidden}.sheet-backdrop{position:absolute;inset:0;background:#010a129e}.sheet{position:relative;width:min(100%,480px);max-height:calc(100% - max(12px,var(--safe-t)));display:flex;flex-direction:column;border-radius:26px 26px 0 0;background:linear-gradient(180deg,#0e2e42fa,#061826fc);border:1px solid var(--line);border-bottom:0;box-shadow:0 -12px 50px #00081080,inset 0 1px #ffffff14;animation:sheetUp .34s var(--ease-out) both}@keyframes sheetUp{0%{transform:translateY(40px)}to{transform:none}}.sheet-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px max(16px,var(--safe-r)) 12px max(18px,var(--safe-l))}.sheet-head:before{content:"";position:absolute;left:50%;top:7px;width:40px;height:4px;margin-left:-20px;border-radius:2px;background:#fff3}.sheet-head h2{margin:0;font-size:22px;font-weight:900;font-style:italic;letter-spacing:.03em;text-transform:uppercase}.sheet-body{overflow-y:auto;-webkit-overflow-scrolling:touch;touch-action:pan-y;overscroll-behavior:contain;padding:0 max(14px,var(--safe-r)) max(16px,var(--safe-b)) max(14px,var(--safe-l));display:grid;gap:10px;align-content:start;grid-auto-rows:max-content}.lesson-list:empty+.btn{opacity:.45;pointer-events:none}.sheet-body:empty:before,.lesson-list:empty:before{content:"Loading";grid-column:1 / -1;padding:28px 0;text-align:center;font-size:12px;font-weight:900;letter-spacing:.3em;text-transform:uppercase;color:var(--faint);animation:blink .7s ease-in-out infinite alternate}.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:4px;padding:4px;border-radius:14px;background:#0000004d;border:1px solid rgba(255,255,255,.07)}.seg button{min-height:38px;border:0;border-radius:10px;padding:0 4px;background:none;color:var(--dim);font-size:14px;font-weight:800;cursor:pointer;transition:background .15s,color .15s}.seg button:hover{color:#fff}.seg button[aria-checked=true],.seg button[aria-selected=true]{background:linear-gradient(180deg,#34dcd6,#15a8a5);color:#022b2d;box-shadow:0 2px 8px #19c3c059}@media (max-width: 600px){.lesson{width:calc(100vw - 132px);padding:10px 12px}.pocket{flex-direction:column;align-items:flex-end;gap:4px}.pocket-bar{width:72px}.lesson-text{margin-bottom:8px}}@media (max-width: 380px){.tile{padding:12px;border-radius:20px}.tile-icon{width:36px;height:36px;border-radius:12px}.modes{gap:10px}.credit{font-size:11px}.btn-row .btn{font-size:12px}.btn-row .btn .ico{width:16px;height:16px}}@media (max-height: 700px){.lesson-list{gap:4px}.lesson-list button{padding-top:5px;padding-bottom:5px}.lesson-list .num{width:26px;height:26px}.card{padding:18px 16px 16px}}@media (max-height: 600px){.tile-desc{display:none}}@media (min-width: 700px) and (min-height: 560px){.overlay.layer{align-items:center;padding:24px}.sheet{border-radius:26px;border-bottom:1px solid var(--line);max-height:min(88vh,760px);box-shadow:0 24px 70px #00081099,inset 0 1px #ffffff14;animation-name:cardIn}.sheet-head:before{display:none}.sheet-body{padding:0 16px 16px}#settings .sheet,#howto .sheet{width:min(100%,760px)}.sheet-body{grid-template-columns:1fr 1fr;align-items:start}}@media (orientation: landscape) and (max-height: 520px){.menu{padding-top:max(10px,var(--safe-t));padding-bottom:max(10px,var(--safe-b))}.menu-top{padding-top:0}.logo-word{font-size:clamp(48px,17vh,84px)}.menu-bottom{width:min(100%,620px);gap:8px}.tile{min-height:0;padding:10px 12px;border-radius:18px}.tile-head{padding-bottom:4px}.tile-icon{width:32px;height:32px;border-radius:10px}.tile-icon .ico{width:19px;height:19px}.tile-arrow{width:26px;height:26px}.tile-desc{display:block}.pips,.tile-best{margin-top:5px}.icon-btn{width:40px;height:40px;border-radius:13px}.icon-btn .ico{width:20px;height:20px}.overlay.layer{align-items:center;padding:max(8px,var(--safe-t)) max(12px,var(--safe-r)) max(8px,var(--safe-b)) max(12px,var(--safe-l))}.sheet{width:min(100%,760px);max-height:100%;border-radius:22px;border-bottom:1px solid var(--line);animation-name:cardIn}.sheet-head{padding:10px 14px 8px 18px}.sheet-head:before{display:none}.sheet-body{grid-template-columns:1fr 1fr;align-items:start;padding:0 12px 12px}.overlay.dim{align-items:center}.card{padding:14px 16px}.card-title{font-size:clamp(24px,9vh,36px)}.lessons-card{width:min(100%,720px)}.lesson-list{grid-template-columns:1fr 1fr}.grad-card{width:min(100%,520px);padding-top:16px}.grad-badge{width:56px;height:56px}.grad-badge .ico{width:30px;height:30px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-delay:0s!important;animation-iteration-count:1!important;transition:none!important}.warn.show{animation:none}}.notice{position:fixed;z-index:50;top:max(12px,var(--safe-t));left:12px;right:12px;max-width:460px;margin:0 auto;display:flex;align-items:center;gap:8px;padding:10px 10px 10px 14px;border-radius:16px;background:#071e2ef5;border:1px solid var(--line-hi);box-shadow:0 12px 34px #00081080;animation:popIn .3s var(--ease-out) both}.notice p{flex:1;margin:0;font-size:13.5px;font-weight:700;line-height:1.35}.notice .btn{flex:none;min-height:40px;padding:0 12px}.results-btns{display:grid;gap:12px}