:root{--font:Figtree, system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono:"Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;--radius:12px;--bg:#0b1120;--surface:#111a2e;--surface-2:#17223a;--fg:#e6edf8;--muted:#8a9ab5;--line:#1f2b45;--accent:#4c8dff;--accent-fg:#06101f;--accent-soft:#15284d;--danger:#ff8787;--danger-soft:#3b1f22;--warn:#ffc552;--warn-soft:#2a2210;--good:#69db7c;--good-soft:#16301f;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}[data-mode=light]{--danger:#c92a2a;--danger-soft:#fde8e8;--warn:#9a5b00;--warn-soft:#fdf1d6;--good:#2b8a3e;--good-soft:#e3f4e6;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}[data-mode=dark]{--danger:#ff8787;--danger-soft:#3b1f22;--warn:#ffc552;--warn-soft:#2a2210;--good:#69db7c;--good-soft:#16301f;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}[data-skin=slate][data-mode=dark]{--bg:#0b1120;--surface:#111a2e;--surface-2:#17223a;--fg:#e6edf8;--muted:#8a9ab5;--line:#1f2b45;--accent:#4c8dff;--accent-fg:#06101f;--accent-soft:#15284d}[data-skin=slate][data-mode=light]{--bg:#f6f8fb;--surface:#fff;--surface-2:#eef2f7;--fg:#0f172a;--muted:#5b6b84;--line:#e1e7ef;--accent:#2563eb;--accent-fg:#fff;--accent-soft:#e6efff}[data-skin=teal][data-mode=dark]{--bg:#081416;--surface:#0e1f22;--surface-2:#15292d;--fg:#e3f2f1;--muted:#88a7a8;--line:#1d3437;--accent:#2dd4bf;--accent-fg:#04201c;--accent-soft:#0f3a36}[data-skin=teal][data-mode=light]{--bg:#f4f9f9;--surface:#fff;--surface-2:#e8f2f2;--fg:#0d1f22;--muted:#4f6a6e;--line:#d8e7e7;--accent:#0f8a80;--accent-fg:#fff;--accent-soft:#dcf1ee}[data-skin=forest][data-mode=dark]{--bg:#0c130f;--surface:#121c16;--surface-2:#19261e;--fg:#e7efe9;--muted:#94a69a;--line:#24332a;--accent:#7fd1a4;--accent-fg:#0c130f;--accent-soft:#1a3528}[data-skin=forest][data-mode=light]{--bg:#f3f6f2;--surface:#fff;--surface-2:#e8ede6;--fg:#16201a;--muted:#56645a;--line:#d9e1d6;--accent:#2f7a52;--accent-fg:#fff;--accent-soft:#dcebe2}[data-skin=sunset][data-mode=dark]{--bg:#141012;--surface:#1d1719;--surface-2:#271f22;--fg:#f6ebe8;--muted:#b39c97;--line:#33282b;--accent:#ff8a6b;--accent-fg:#1a0f0c;--accent-soft:#43231d}[data-skin=sunset][data-mode=light]{--bg:#fbf6f3;--surface:#fff;--surface-2:#f5ebe5;--fg:#24150f;--muted:#6e5a50;--line:#ecdcd3;--accent:#c8401f;--accent-fg:#fff;--accent-soft:#fbe1da}[data-skin=lavender][data-mode=dark]{--bg:#100e18;--surface:#171522;--surface-2:#201d2e;--fg:#efecf8;--muted:#a49dbb;--line:#2b273c;--accent:#b5a1ff;--accent-fg:#12101a;--accent-soft:#2a2350}[data-skin=lavender][data-mode=light]{--bg:#f7f5fc;--surface:#fff;--surface-2:#efebf8;--fg:#1c1630;--muted:#625b78;--line:#e3ddf1;--accent:#6d4fd8;--accent-fg:#fff;--accent-soft:#ebe5fb}[data-skin=mono][data-mode=dark]{--bg:#0a0a0a;--surface:#131313;--surface-2:#1d1d1d;--fg:#f5f5f5;--muted:#a0a0a0;--line:#262626;--accent:#f5f5f5;--accent-fg:#0a0a0a;--accent-soft:#262626;--font:Geist, system-ui, sans-serif}[data-skin=mono][data-mode=light]{--bg:#fafafa;--surface:#fff;--surface-2:#f0f0f0;--fg:#0a0a0a;--muted:#5f5f5f;--line:#e2e2e2;--accent:#0a0a0a;--accent-fg:#fff;--accent-soft:#ececec;--font:Geist, system-ui, sans-serif}*,:before,:after{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--fg);font-family:var(--font);-webkit-font-smoothing:antialiased;margin:0;font-size:14.5px;line-height:1.5}h1,h2,h3{letter-spacing:-.01em;text-wrap:balance;margin:0;line-height:1.2}h1{font-size:clamp(1.5rem,3vw,1.85rem)}h2{font-size:1.15rem}p{margin:0}a{color:var(--accent)}button,input,select,textarea{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.muted{color:var(--muted)}.small{font-size:.85rem}.label{font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-size:.72rem}.accent-text{color:var(--accent)}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.btn{border:1px solid var(--line);background:var(--surface);min-height:44px;color:var(--fg);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-weight:600;text-decoration:none;transition:background-color .15s;display:inline-flex}.btn:hover{background:var(--surface-2)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-fg)}.btn.primary:hover{filter:brightness(1.08)}.btn.block{width:100%}.btn svg{flex:none;width:18px;height:18px}.icon-btn{width:36px;height:36px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:8px;place-items:center;display:grid}.icon-btn:hover{background:var(--surface-2);color:var(--fg)}.icon-btn svg{width:18px;height:18px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.field{flex-direction:column;gap:6px;font-size:.88rem;font-weight:600;display:flex}.input{border:1px solid var(--line);background:var(--bg);min-height:44px;color:var(--fg);border-radius:10px;padding:10px 12px}.input:focus{border-color:var(--accent);outline:none}.notice{border-radius:10px;padding:12px 14px;font-size:.9rem}.notice.error{background:var(--danger-soft);color:var(--danger)}.notice.info{background:var(--accent-soft);color:var(--fg)}.brand{align-items:center;gap:10px;font-size:1rem;font-weight:700;display:flex}.logo{flex:none;display:block}kbd{font-family:var(--font-mono);opacity:.55;border:1px solid;border-radius:4px;padding:1px 5px;font-size:.68rem}.seg{background:var(--surface-2);border-radius:99px;align-self:flex-start;padding:3px;display:inline-flex}.seg button{cursor:pointer;color:var(--muted);background:0 0;border:0;border-radius:99px;padding:7px 16px;font-weight:600}.seg button[aria-pressed=true]{background:var(--surface);color:var(--fg);box-shadow:0 1px 3px #00000026}.skins{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;display:grid}.skin{border:1px solid var(--line);background:var(--surface);cursor:pointer;text-align:left;border-radius:12px;flex-direction:column;gap:6px;padding:10px;display:flex}.skin[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.skin small{color:var(--muted);font-size:.78rem;line-height:1.3}.skin-swatch{background:var(--bg);border:1px solid var(--line);border-radius:8px;height:56px;display:block;position:relative}.skin-swatch i{background:var(--accent);border-radius:50%;width:20px;height:20px;position:absolute;bottom:10px;right:10px}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.inline-form{flex-wrap:wrap;align-items:flex-end;gap:10px;display:flex}.setting-row{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding-top:12px;display:flex}.actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.list{flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.list-item{border-top:1px solid var(--line);grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:12px;padding:12px 0;display:grid}.list-item:first-child{border-top:0}.truncate{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.pill{font-family:var(--font-mono);letter-spacing:.05em;text-transform:uppercase;background:var(--surface-2);color:var(--muted);white-space:nowrap;border-radius:99px;padding:2px 9px;font-size:.68rem;font-weight:500;display:inline-block}.pill-pending{background:var(--accent-soft);color:var(--accent)}.pill-used{background:var(--good-soft);color:var(--good)}.pill-revoked,.pill-expired{background:var(--surface-2);color:var(--muted)}.btn.small-btn{min-height:36px;padding:6px 12px;font-size:.85rem}.btn.danger{color:var(--danger);border-color:color-mix(in srgb, var(--danger) 40%, transparent)}.btn.danger:hover{background:var(--danger-soft)}.mono{font-family:var(--font-mono);font-size:.85em}.invite-link{background:var(--accent-soft);border-radius:10px;flex-direction:column;gap:10px;padding:14px;display:flex}.danger-zone{border-top:1px solid var(--line);flex-direction:column;gap:10px;padding-top:14px;display:flex}@media (width<=760px){.list-item{grid-template-columns:minmax(0,1fr) auto}.list-item>.actions,.list-item>.btn,.list-item>span:last-child{grid-column:1/-1}}.switch{border:1px solid var(--line);background:var(--surface-2);cursor:pointer;border-radius:99px;flex:none;width:44px;height:26px;padding:0;transition:background-color .15s;position:relative}.switch span{background:var(--muted);border-radius:50%;width:20px;height:20px;transition:transform .15s,background-color .15s;position:absolute;top:2px;left:2px}.switch[aria-checked=true]{background:var(--accent);border-color:var(--accent)}.switch[aria-checked=true] span{background:var(--accent-fg);transform:translate(18px)}.good-text{color:var(--good)}.warn-text{color:var(--warn)}.link-btn{color:var(--muted);cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;padding:4px 0;display:inline-flex}.link-btn:hover:not(:disabled){color:var(--fg)}.link-btn:disabled{opacity:.4;cursor:default}.row-between{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;display:flex}.progress-bar{background:var(--surface-2);border-radius:99px;height:8px;display:flex;overflow:hidden}.progress-bar span{background:var(--accent);border-radius:inherit;height:100%;transition:width .25s;display:block}.progress-bar span.good{background:var(--good)}.progress-bar.thin{flex:1;height:4px}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.install-steps svg{vertical-align:-.15em;width:1.05em;height:1.05em}.stack{flex-direction:column;gap:14px;display:flex}.row-head,.view-head.row-head{flex-flow:wrap;justify-content:space-between;align-items:flex-end;gap:12px;display:flex}.empty{align-items:flex-start}.class-dot{vertical-align:middle;border-radius:50%;flex:none;width:9px;height:9px;display:inline-block}.chips{flex-wrap:wrap;gap:6px;display:flex}.chip{border:1px solid var(--line);background:var(--surface);min-height:34px;color:var(--muted);cursor:pointer;border-radius:99px;align-items:center;gap:6px;padding:5px 12px;font-size:.84rem;font-weight:600;display:inline-flex}.chip:hover{color:var(--fg)}.chip[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent);color:var(--fg)}.app{grid-template-columns:232px minmax(0,1fr);min-height:100%;display:grid}.nav{border-right:1px solid var(--line);background:var(--bg);flex-direction:column;gap:2px;height:100vh;padding:20px 12px 14px;display:flex;position:sticky;top:0}.nav-brand{padding:2px 10px 20px}.nav-item{color:var(--muted);border-radius:8px;align-items:center;gap:10px;min-height:40px;padding:8px 10px;font-weight:500;text-decoration:none;display:flex}.nav-item svg{flex:none;width:18px;height:18px}.nav-item:hover{background:var(--surface-2);color:var(--fg)}.nav-item.active{background:var(--accent-soft);color:var(--fg)}.nav-item.active svg{color:var(--accent)}.nav-key{opacity:.6;border:0;margin-left:auto}.nav-spacer{flex:1}.nav-foot{border-top:1px solid var(--line);padding-top:12px}.me{grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;gap:6px;padding:4px 2px 0 6px;display:grid}.me-text{min-width:0;color:inherit;flex-direction:column;line-height:1.25;text-decoration:none;display:flex}.me-text b{text-overflow:ellipsis;white-space:nowrap;font-size:.86rem;overflow:hidden}.me-text span{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:.7rem;overflow:hidden}.avatar{background:var(--accent);width:32px;height:32px;color:var(--accent-fg);border-radius:50%;flex:none;place-items:center;font-size:.72rem;font-weight:700;display:grid}.avatar.large{width:52px;height:52px;font-size:1.05rem}.topbar{display:none}.main{min-width:0;padding-block:36px 72px;padding-inline:max(32px, env(safe-area-inset-left)) max(32px, env(safe-area-inset-right))}.view{flex-direction:column;gap:24px;max-width:980px;margin:0 auto;display:flex}.view-head{flex-direction:column;gap:6px;display:flex}.panel{flex-direction:column;gap:12px;padding:22px;display:flex}.dialog{border:1px solid var(--line);background:var(--surface);color:var(--fg);border-radius:16px;width:min(560px,100% - 32px);padding:22px}.dialog::backdrop{background:#05080f8c}.dialog-head{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}@media (width<=760px){.app{grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr)}.topbar{z-index:20;padding:10px max(16px, env(safe-area-inset-right)) 10px max(16px, env(safe-area-inset-left));padding-top:max(10px, env(safe-area-inset-top));background:var(--surface);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;display:flex;position:sticky;top:0}.nav{z-index:20;height:auto;padding:6px 4px calc(6px + env(safe-area-inset-bottom));border-right:0;border-top:1px solid var(--line);flex-direction:row;justify-content:space-around;gap:0;position:fixed;inset:auto 0 0}.nav-brand,.nav-spacer,.nav-foot,.nav-key{display:none}.nav-item{flex-direction:column;flex:1;justify-content:center;gap:3px;min-height:52px;padding:6px 2px;font-size:.62rem}.nav-item.active{color:var(--accent);background:0 0}.main{padding-block:22px calc(96px + env(safe-area-inset-bottom));padding-inline:max(16px, env(safe-area-inset-left)) max(16px, env(safe-area-inset-right))}}.tiles{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.tile{min-width:0;color:inherit;flex-direction:column;gap:2px;padding:14px 16px;text-decoration:none;display:flex}.tile.link:hover{border-color:var(--accent)}.tile-value{font-size:1.6rem;line-height:1.2}.plans{flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.plan{border-top:1px solid var(--line);flex-direction:column;gap:8px;padding:14px 0;display:flex}.plan:first-child{border-top:0;padding-top:4px}.plan-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.plan-title{flex-direction:column;min-width:0;display:flex}.plan-meter{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;display:grid}.review-callout{background:var(--accent-soft);border-radius:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;display:flex}.list-item.paused{grid-template-columns:minmax(0,1fr) auto}@media (width<=760px){.tiles{grid-template-columns:1fr 1fr}.tile-value{font-size:1.3rem}.plan-meter{grid-template-columns:1fr;gap:4px}}.install-banner{display:none}@media (width<=760px){.install-banner{align-items:flex-start;gap:12px;max-width:980px;margin:0 auto 18px;padding:14px 14px 14px 16px;display:flex}.install-text{flex-direction:column;flex:1;align-items:flex-start;gap:8px;min-width:0;display:flex}}.settings-layout{grid-template-columns:200px minmax(0,1fr);align-items:start;gap:28px;display:grid}.settings-tabs{flex-direction:column;gap:2px;display:flex;position:sticky;top:24px}.settings-tabs .nav-item span{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.settings-panel{flex-direction:column;gap:16px;min-width:0;display:flex}.settings-panel>*{margin:0}.setting-row.first{border-top:0;padding-top:0}@media (width<=760px){.settings-layout{grid-template-columns:minmax(0,1fr);gap:16px}.settings-tabs{border:1px solid var(--line);background:var(--surface);scrollbar-width:none;border-radius:12px;flex-direction:row;gap:0;padding:4px;position:static;overflow-x:auto}.settings-tabs::-webkit-scrollbar{display:none}.settings-tabs .nav-item{border-radius:8px;flex:1 1 0;min-width:0;height:56px;min-height:56px;padding:6px 2px}}.setting-row:has(>.switch)>div:first-child{flex:1 1 0;min-width:0}.update-bar{background:var(--accent-soft);border-radius:12px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;max-width:980px;margin:0 auto 18px;padding:10px 14px;font-size:.9rem;font-weight:600;display:flex}.login{grid-template-columns:repeat(2,minmax(0,1fr));min-height:100%;display:grid}.login-art{background:var(--surface);border-right:1px solid var(--line);flex-direction:column;justify-content:space-between;gap:32px;padding:48px;display:flex;position:relative;overflow:hidden}.login-deck{height:340px;position:relative}.deck-card{aspect-ratio:360/220;border:1px solid var(--line);background:var(--surface-2);border-radius:16px;width:min(360px,80%);position:absolute;top:50%;left:50%}.deck-card.back-2{transform:translate(-58%,-46%)rotate(-8deg)}.deck-card.back-1{background:color-mix(in srgb, var(--accent-soft) 60%, var(--surface-2));transform:translate(-53%,-50%)rotate(-3deg)}.deck-card.front{box-sizing:border-box;background:var(--fg);color:var(--bg);border-color:#0000;flex-direction:column;justify-content:space-between;padding:22px;display:flex;transform:translate(-46%,-52%)rotate(3deg);box-shadow:0 30px 60px #00000059}.deck-card.front .label{color:color-mix(in srgb, var(--bg) 60%, var(--fg))}.deck-term{text-align:center;font-size:clamp(1.5rem,2.4vw,1.9rem);font-weight:700}.deck-hints{font:.7rem var(--font-mono);color:color-mix(in srgb, var(--bg) 60%, var(--fg));justify-content:space-between;display:flex}.login-pitch{flex-direction:column;gap:10px;max-width:460px;display:flex}.login-pitch h2{font-size:1.6rem;line-height:1.25}.login-form{flex-direction:column;justify-content:center;padding:48px clamp(24px,8vw,112px);display:flex;position:relative}.login-form-inner{flex-direction:column;gap:24px;width:100%;max-width:400px;display:flex}.login-head{flex-direction:column;gap:6px;display:flex}.login-head h1{font-size:2.1rem}.login-google{border-radius:12px;gap:12px;min-height:52px;font-size:1rem}.google-badge{background:#fff;border-radius:50%;place-items:center;width:28px;height:28px;display:grid}.google-badge svg{width:16px;height:16px}.login-foot{gap:20px;display:flex;position:absolute;bottom:32px;left:clamp(24px,8vw,112px)}.login-foot a{color:var(--muted)}.login-foot a:hover{color:var(--fg)}@media (width<=860px){.login{grid-template-columns:minmax(0,1fr)}.login-art{border-right:0;border-bottom:1px solid var(--line);gap:16px;padding:24px 16px 28px}.login-deck{height:200px}.deck-card{width:270px}.login-pitch h2{font-size:1.25rem}.login-pitch p{display:none}.login-form{justify-content:flex-start;gap:28px;padding:28px 16px 24px}.login-foot{position:static}}.btn kbd{color:inherit}.back{text-decoration:none}.back:hover{color:var(--accent)}.hide-phone{white-space:nowrap}.dialog.wide{width:min(720px,100% - 32px)}.field.plain{border:0;margin:0;padding:0}.field.plain legend{margin-bottom:6px;padding:0}.field.inline{flex-direction:row;align-items:center;gap:10px}.field.inline .input{min-height:38px;padding:6px 10px}.field.grow{flex:260px}.field-error{color:var(--danger);font-size:.78rem}.swatches{flex-wrap:wrap;gap:10px;display:flex}.swatch{cursor:pointer;width:32px;height:32px;box-shadow:inset 0 0 0 2px var(--surface);border:2px solid #0000;border-radius:50%}.swatch[aria-pressed=true]{border-color:var(--fg)}.class-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;display:grid}.class-tile{border-top:3px solid var(--line);min-height:116px;display:flex;position:relative}.class-open{text-align:left;cursor:pointer;border-radius:inherit;background:0 0;border:0;flex-direction:column;flex:1;gap:4px;min-width:0;padding:16px 16px 14px;display:flex}.class-open b{font-size:1.02rem}.class-open:hover{background:var(--surface-2)}.tile-actions{opacity:0;transition:opacity .15s;display:flex;position:absolute;top:8px;right:6px}.class-tile:hover .tile-actions,.class-tile:focus-within .tile-actions{opacity:1}.add-tile{color:var(--muted);cursor:pointer;border-style:dashed;justify-content:center;align-items:center;gap:8px;font-weight:600}.add-tile svg{width:18px;height:18px}.add-tile:hover{color:var(--fg);background:var(--surface-2)}.filters{flex-direction:column;gap:12px;display:flex}.search{align-items:center;display:flex;position:relative}.search svg{width:17px;height:17px;color:var(--muted);pointer-events:none;position:absolute;left:12px}.search .input{width:100%;padding-left:38px;padding-right:40px}.search kbd{position:absolute;right:12px}.filter-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;display:flex}.group{flex-direction:column;gap:10px;display:flex}.group-title{align-items:center;gap:8px;font-size:.98rem;display:flex}.group-title .muted{margin-left:4px;font-weight:400}.set-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.set-row{color:inherit;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px;padding:14px 16px;text-decoration:none;display:grid}.set-row:hover{border-color:var(--accent)}.set-main{flex-direction:column;gap:2px;min-width:0;display:flex}.set-meta{align-items:center;gap:10px;display:flex}.study-modes{gap:14px}.mode-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;display:grid}.mode-card{border:1px solid var(--line);background:var(--bg);color:inherit;border-radius:12px;flex-direction:column;gap:4px;padding:14px 16px;text-decoration:none;display:flex;position:relative}.mode-card:hover{border-color:var(--accent)}.mode-card b{font-size:1rem}.mode-card kbd{position:absolute;top:12px;right:12px}.term-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.term-row{grid-template-columns:28px minmax(0,2fr) minmax(0,3fr);align-items:start;gap:16px;padding:14px 16px;display:grid}.term-n{padding-top:3px}.term{overflow-wrap:anywhere;font-weight:600}.def{overflow-wrap:anywhere;flex-direction:column;gap:8px;display:flex}.card-img{object-fit:contain;background:var(--surface-2);border-radius:8px;align-self:flex-start;max-width:220px;max-height:160px}mark{background:color-mix(in srgb, var(--warn) 35%, transparent);color:inherit;border-radius:3px;padding:0 2px}.diagram{background:var(--surface-2);-webkit-user-select:none;user-select:none;border-radius:10px;width:100%;max-height:70vh;position:relative;overflow:hidden}.diagram img{object-fit:contain;width:100%;height:100%;position:absolute;inset:0}.diagram.editable{cursor:crosshair}.diagram.placing{outline:2px dashed var(--accent);outline-offset:2px}.pin{background:var(--accent);width:26px;height:26px;color:var(--accent-fg);font:600 .72rem var(--font-mono);border:2px solid #fff;border-radius:50%;place-items:center;display:grid;position:absolute;transform:translate(-50%,-50%);box-shadow:0 2px 8px #00000073}.pin.active{background:var(--warn)}.label-list{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:6px 20px;margin:0;padding-left:22px;display:grid}.diagram-empty{text-align:center;align-items:center;padding:40px 22px}.diagram-empty svg{width:28px;height:28px;color:var(--muted)}.editor-meta{flex-wrap:wrap;align-items:flex-end;gap:12px;display:flex}.editor-bar{z-index:5;background:var(--bg);flex-wrap:wrap;align-items:center;gap:12px;padding:8px 0;display:flex;position:sticky;top:0}.editor-bar .btn{margin-left:auto}.format-bar{border:1px solid var(--line);background:var(--surface);border-radius:10px;gap:2px;padding:3px;display:inline-flex}.fmt{cursor:pointer;min-width:34px;height:32px;color:var(--fg);background:0 0;border:0;border-radius:7px;font-size:.9rem}.fmt:hover{background:var(--surface-2)}.fmt-b{font-weight:800}.fmt-i{font-family:Georgia,serif;font-style:italic}.fmt-u{text-decoration:underline}.fmt-h{background:color-mix(in srgb, var(--warn) 30%, transparent)}.edit-rows{flex-direction:column;gap:40px;margin:0;padding:0;list-style:none;display:flex}.edit-row{flex-direction:column;gap:8px;padding:10px 16px 16px;display:flex}.edit-row-head{justify-content:space-between;align-items:center;display:flex}.edit-row-head .icon-btn:disabled{opacity:.3;cursor:default}.edit-row-head .btn[aria-pressed=true]{border-color:var(--accent);color:var(--accent)}.edit-fields{grid-template-columns:1fr 1fr;gap:16px;display:grid}.diagram-row .edit-fields{grid-template-columns:1fr}.edit-field{flex-direction:column;gap:4px;min-width:0;display:flex}.def-wrap{align-items:flex-start;gap:6px;display:flex}.def-wrap .rich{flex:1}.rich{overflow-wrap:anywhere;cursor:text;background:0 0;border-width:0 0 2px;border-radius:6px 6px 0 0;min-height:44px;padding:10px 2px 6px;line-height:1.45}.rich:focus{border-color:var(--accent)}.rich:empty:before{content:attr(data-placeholder);color:var(--muted);opacity:.7}.image-btn{flex-direction:column;align-items:flex-end;gap:4px;max-width:160px;display:flex}.thumb{display:block;position:relative}.thumb img{object-fit:cover;border-radius:6px;width:64px;height:48px;display:block}.thumb .icon-btn{background:var(--surface);border:1px solid var(--line);width:24px;height:24px;position:absolute;top:-10px;right:-10px}.thumb .icon-btn svg{width:12px;height:12px}.add-row{border-style:dashed}.import-text{resize:vertical;min-height:180px;font-family:var(--font-mono);white-space:pre;font-size:.82rem}.import-preview{background:var(--surface-2);border-radius:10px;flex-direction:column;gap:4px;padding:12px;display:flex}@media (width<=760px){.edit-fields{grid-template-columns:1fr;gap:6px}.term-row{grid-template-columns:22px minmax(0,1fr)}.term-row .def{grid-column:2}.hide-phone,.search kbd,.btn kbd{display:none}.tile-actions{opacity:1}.set-meta .pill{display:none}}.swatch.custom{color:#fff;background:conic-gradient(#e03131,#f08c00,#fab005,#2f9e44,#1098ad,#4263eb,#ae3ec9,#e03131);place-items:center;font-weight:700;display:grid;position:relative;overflow:hidden}.swatch.custom.on{border-color:var(--fg)}.swatch.custom span{background:var(--surface);width:18px;height:18px;color:var(--fg);border-radius:50%;place-items:center;font-size:.9rem;line-height:1;display:grid}.swatch.custom input{opacity:0;cursor:pointer;border:0;width:100%;height:100%;padding:0;position:absolute;inset:0}.swatch.custom:focus-within{outline:2px solid var(--accent);outline-offset:2px}.edit-row.drop-over{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.edit-row{position:relative}.insert-slot{pointer-events:none;align-items:center;gap:10px;height:40px;display:flex;position:absolute;top:-41px;left:0;right:0}.insert-slot:before,.insert-slot:after{content:"";background:var(--line);flex:1;height:1px}.insert-card{pointer-events:auto;border:1px solid var(--line);background:var(--surface);width:26px;height:26px;color:var(--muted);cursor:pointer;border-radius:50%;flex:none;place-items:center;padding:0;transition:color .12s,border-color .12s;display:grid}.insert-card svg{width:14px;height:14px}.edit-row-num{align-items:center;gap:4px;margin-left:-8px;display:flex}.drag-handle{width:28px;height:32px;color:var(--muted);cursor:grab;touch-action:none;background:0 0;border:0;border-radius:6px;place-items:center;padding:0;display:grid}.drag-handle svg{width:16px;height:16px}.drag-handle:hover,.drag-handle:focus-visible{background:var(--surface-2);color:var(--fg)}.edit-rows.is-dragging{cursor:grabbing;-webkit-user-select:none;user-select:none}.edit-rows.is-dragging .drag-handle{cursor:grabbing}.edit-rows.is-dragging .insert-slot{visibility:hidden}.edit-row.dragging{z-index:5;border-color:var(--accent);box-shadow:0 12px 32px #00000059}.insert-card:hover,.insert-card:focus-visible{color:var(--accent);border-color:var(--accent)}.connect{flex-flow:wrap;justify-content:space-between;align-items:center;gap:16px}.connect-text{flex-direction:column;flex:320px;gap:3px;min-width:0;display:flex}.month{gap:10px}.month-head{align-items:center;gap:8px;display:flex}.month-head h2{text-align:center;min-width:170px}.month-head .icon-btn{font-size:1.4rem}.month-head .muted{margin-left:auto}.month-grid{grid-template-columns:repeat(7,minmax(0,1fr));gap:4px;display:grid}.weekday{text-align:center;padding:4px 0}.day{background:var(--bg);min-height:84px;color:var(--fg);cursor:pointer;text-align:left;border:1px solid #0000;border-radius:8px;flex-direction:column;align-items:stretch;gap:3px;min-width:0;padding:6px;display:flex}.day:hover{border-color:var(--line)}.day.out{opacity:.45}.day.today .day-n{background:var(--accent);color:var(--accent-fg)}.day.selected{border-color:var(--accent)}.day-n{min-width:24px;height:24px;font:600 .78rem var(--font-mono);border-radius:99px;align-self:flex-start;place-items:center;padding:0 6px;display:grid}.day-event{border-left:3px solid var(--accent);background:var(--surface-2);text-overflow:ellipsis;white-space:nowrap;border-radius:4px;padding:2px 6px;font-size:.72rem;font-weight:600;display:block;overflow:hidden}.event{flex-direction:column;gap:12px;padding:12px 16px;display:flex}.event-main{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;display:grid}.event-date{background:var(--surface-2);border-radius:10px;flex-direction:column;align-items:center;width:48px;padding:6px 0;line-height:1.1;display:flex}.event-date b{font-size:1.2rem}.event-text{flex-direction:column;gap:2px;min-width:0;display:flex}.event-text .pill{margin-left:6px}.event-links{border-top:1px solid var(--line);flex-direction:column;gap:12px;padding-top:12px;display:flex}.event-links .field{max-width:100%}@media (width<=760px){.day{align-items:center;min-height:52px;padding:3px}.day-event{background:var(--accent);border:0;border-radius:50%;width:7px;height:7px;padding:0;font-size:0}.day .muted.small,.month-head .hide-phone{display:none}.event-main{grid-template-columns:auto minmax(0,1fr)}.event-main>.actions{grid-column:1/-1}}.write-settings{border-top:1px solid var(--line);flex-wrap:wrap;flex:100%;align-items:flex-end;gap:12px 20px;padding-top:12px;display:flex}.write-settings .field{flex:0 320px;min-width:0}.switch-row{flex:260px;align-items:center;gap:10px;min-height:40px;display:flex}.event-details{border-bottom:1px solid var(--line);flex-direction:column;gap:10px;padding-bottom:12px;display:flex}.event-details .actions:empty{display:none}.deleted{flex-direction:column;align-items:flex-start;gap:8px;display:flex}.deleted-row{justify-content:space-between;align-self:stretch;align-items:center;gap:12px;padding:10px 14px;display:flex}.event-details .inline-form .field{flex:180px}.write-settings .read-calendars{flex:100%;max-width:none}.read-calendars .chip span{margin-left:4px;font-size:.72rem}.read-calendars .chip:disabled{cursor:default}.set-groups{flex-direction:column;gap:10px;display:flex}.set-group{flex-direction:column;gap:6px;display:flex}.exam-link{border-top:1px solid var(--line);align-items:center;gap:12px;padding:10px 0;display:flex}.exam-link:first-child{border-top:0;padding-top:0}.exam-link .grow{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.exam-sets{margin-top:4px}.exam-sets .chip{min-height:28px;font-size:.8rem;text-decoration:none}.exams-by-class{flex-direction:column;gap:12px;display:flex}.exam-group{gap:8px}.friends .grow,.person-row .grow{flex-direction:column;flex:1;min-width:0;display:flex}.friends .num{font-variant-numeric:tabular-nums}.friends-grid{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:16px;display:grid}.friends-grid>*{min-width:0}.person-row,.share-row{border-top:1px solid var(--line);align-items:center;gap:12px;padding:10px 0;display:flex}.person-row:first-child,.share-row:first-child{border-top:0;padding-top:0}.board li{border-top:1px solid var(--line);align-items:center;gap:10px;padding:9px 0;display:flex}.board li:first-child{border-top:0}.board .rank{width:18px;font-family:var(--font-mono);color:var(--muted)}.board li.me{background:var(--accent-soft);border-top-color:#0000;border-radius:10px;padding-inline:8px}.board li.me+li{border-top-color:#0000}.cheer-note{background:var(--accent-soft);border-color:#0000;gap:4px}.empty-friends{flex-direction:column;gap:10px;display:flex}.code-box{border:1px solid var(--line);background:var(--bg);letter-spacing:.06em;border-radius:10px;align-items:center;gap:8px;padding:8px 8px 8px 12px;display:flex}.code-box .grow{flex:1;min-width:0}.check-list{flex-direction:column;gap:2px;display:flex}.check-list label{cursor:pointer;border-radius:10px;align-items:center;gap:10px;padding:8px 10px;font-weight:500;display:flex}.check-list label:hover{background:var(--surface-2)}.check-list input{width:18px;height:18px;accent-color:var(--accent)}.preview-card{border:1px dashed var(--accent);background:var(--accent-soft);border-radius:12px;flex-direction:column;gap:8px;padding:14px;display:flex}.preview-card .label{color:var(--accent)}.preview-inner{flex-direction:column;gap:4px;padding:12px 14px;display:flex}.preview-stats{color:var(--muted);flex-wrap:wrap;gap:4px 14px;display:flex}@media (width<=760px){.friends-grid{grid-template-columns:minmax(0,1fr)}.share-row{flex-wrap:wrap}.share-row .grow{flex-basis:50%}.person-row .actions{flex-wrap:nowrap}}.progress{--heat-0:var(--surface-2);--heat-1:color-mix(in srgb, var(--accent) 24%, var(--surface-2));--heat-2:color-mix(in srgb, var(--accent) 48%, var(--surface-2));--heat-3:color-mix(in srgb, var(--accent) 74%, var(--surface-2));--heat-4:var(--accent);max-width:1080px}.progress .grid-2{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:16px;display:grid}.progress .grid-2>*{min-width:0}.progress .grow{flex-direction:column;flex:1;min-width:0;display:flex}.progress .num{font-variant-numeric:tabular-nums}.progress .fg{color:var(--fg)}.danger-text{color:var(--danger)}.pill-warn{background:var(--warn-soft);color:var(--warn)}.insights{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.insight{background:var(--surface-2);border-radius:12px;grid-template-columns:34px minmax(0,1fr);align-items:start;gap:12px;padding:13px 14px;display:grid}.insight p{font-size:.9rem}.insight .btn{margin-top:8px}.insight-icon{background:var(--accent-soft);width:34px;height:34px;color:var(--accent);border-radius:10px;place-items:center;display:grid}.insight-icon svg{width:18px;height:18px}.insight.good .insight-icon{background:var(--good-soft);color:var(--good)}.insight.warn .insight-icon{background:var(--warn-soft);color:var(--warn)}.heat-legend{align-items:center;gap:4px;display:flex}.heat-legend i{border-radius:4px;width:12px;height:12px;display:inline-block}.heat-legend i[data-l="0"],.cell[data-l="0"]{background:var(--heat-0)}.heat-legend i[data-l="1"],.cell[data-l="1"]{background:var(--heat-1)}.heat-legend i[data-l="2"],.cell[data-l="2"]{background:var(--heat-2)}.heat-legend i[data-l="3"],.cell[data-l="3"]{background:var(--heat-3)}.heat-legend i[data-l="4"],.cell[data-l="4"]{background:var(--heat-4)}.activity{grid-template-columns:minmax(0,1fr) 200px;align-items:start;gap:22px;display:grid}.activity-main{flex-direction:column;gap:12px;min-width:0;display:flex}.cal{grid-template-columns:30px minmax(0,1fr);gap:6px 8px;display:grid}.cal-months{font-family:var(--font-mono);color:var(--muted);grid-column:2;gap:4px;font-size:.66rem;display:grid}.cal-days{font-family:var(--font-mono);color:var(--muted);grid-template-rows:repeat(7,minmax(0,1fr));gap:4px;font-size:.62rem;display:grid}.cal-days span{align-items:center;display:flex}.cal-grid{grid-template-rows:repeat(7,auto);grid-auto-flow:column;gap:4px;display:grid}.cell{aspect-ratio:1;cursor:pointer;border:0;border-radius:5px;width:100%;padding:0;transition:transform .12s}.cell:hover{transform:scale(1.15)}.cell.today{box-shadow:0 0 0 2px var(--surface), 0 0 0 3.5px var(--accent)}.cell[aria-pressed=true]{box-shadow:0 0 0 2px var(--surface), 0 0 0 3.5px var(--fg)}.cell.pad{visibility:hidden;pointer-events:none}.day-detail{background:var(--surface-2);border-radius:10px;padding:10px 12px}.activity-side{flex-direction:column;gap:16px;display:flex}.streak-big{align-items:baseline;gap:8px;display:flex}.streak-big b{letter-spacing:-.02em;font-variant-numeric:tabular-nums;font-size:2.4rem;line-height:1.05}.week-bars{grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;height:76px;margin-top:6px;display:grid}.week-bars div{flex-direction:column;justify-content:flex-end;align-items:center;gap:4px;display:flex}.week-bars i{background:var(--heat-2);border-radius:4px 4px 2px 2px;width:100%}.week-bars .top i{background:var(--accent)}.week-bars span{font-family:var(--font-mono);color:var(--muted);font-size:.6rem}.chart{width:100%;height:auto;display:block}.chart text{fill:var(--muted);font-family:var(--font-mono);font-size:10px}.chart-key{gap:14px;display:flex}.chart-key span{align-items:center;gap:6px;display:inline-flex}.key-bar{background:var(--heat-2);border-radius:2px;width:10px;height:10px}.key-line{background:var(--accent);border-radius:2px;width:14px;height:3px}.ready-row{border-top:1px solid var(--line);align-items:center;gap:12px;padding:10px 0;display:flex}.ready-row:first-child{border-top:0;padding-top:0}.ring{flex:none;width:46px;height:46px}.ring circle{fill:none;stroke-width:5px}.ring-track{stroke:var(--surface-2)}.ring text{font:700 12px var(--font);fill:var(--fg)}.mastery-row{width:100%;color:inherit;text-align:left;cursor:pointer;background:0 0;border:0;grid-template-columns:110px minmax(0,1fr) 44px;align-items:center;gap:10px;padding:7px 0;display:grid}.mastery-row b.num{text-align:right}.mastery-row[aria-expanded=true] .mastery-name{color:var(--accent)}.mastery-name{align-items:center;gap:7px;min-width:0;display:flex}.mastery-bar{background:var(--heat-0);border-radius:5px;height:14px;display:flex;overflow:hidden}.mastery-bar span,.mastery-key i{height:100%;display:block}[data-b=new]{background:var(--heat-0)}[data-b=learning]{background:var(--heat-1)}[data-b=familiar]{background:var(--heat-2)}[data-b=strong]{background:var(--heat-3)}[data-b=mastered]{background:var(--heat-4)}.mastery-key{flex-wrap:wrap;gap:6px 12px;margin-top:10px;display:flex}.mastery-key span{align-items:center;gap:5px;display:inline-flex}.mastery-key i{border:1px solid var(--line);border-radius:3px;width:10px;height:10px}.sub-sets{flex-direction:column;gap:4px;padding:0 0 8px 120px;display:flex}.sub-sets a{color:inherit;grid-template-columns:minmax(0,1fr) 80px 40px;align-items:center;gap:10px;padding:3px 0;font-size:.85rem;text-decoration:none;display:grid}.sub-sets a:hover .truncate{color:var(--accent)}.sub-sets .num{text-align:right}.trouble-row{border-top:1px solid var(--line);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;padding:10px 0;display:grid}.trouble-row:first-child{border-top:0;padding-top:0}.trouble-text{color:inherit;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:10px;min-width:0;text-decoration:none;display:grid}.trouble-pills{gap:6px;display:flex}@media (width<=900px){.progress .grid-2,.activity{grid-template-columns:minmax(0,1fr)}}@media (width<=760px){.insights{grid-template-columns:minmax(0,1fr)}.cal-grid,.cal-months,.cal-days{gap:2px}.cell{border-radius:3px}.mastery-row{grid-template-columns:76px minmax(0,1fr) 40px}.sub-sets{padding-left:86px}.trouble-text{grid-template-columns:minmax(0,1fr);gap:0}}.buddy{max-width:820px}.buddy-status{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.dropzone{border:2px dashed var(--line);text-align:center;border-radius:14px;flex-direction:column;align-items:center;gap:6px;min-width:0;padding:28px 16px;transition:border-color .15s,background-color .15s;display:flex}.dropzone svg{width:28px;height:28px;color:var(--accent)}.dropzone.over{border-color:var(--accent);background:var(--accent-soft)}.dropzone.has-file{border-style:solid}.dropzone .btn{margin-top:6px}.dropzone .truncate{max-width:100%}.buddy-working{text-align:center;flex-direction:column;align-items:center;gap:6px;padding:10px 0;display:flex}.buddy-working.inline{flex-direction:row;justify-content:flex-start;padding:6px 0 0;font-size:.88rem}.spinner{border:3px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;width:22px;height:22px;animation:.9s linear infinite buddy-spin}.buddy-working.inline .spinner{border-width:2px;width:14px;height:14px}@keyframes buddy-spin{to{transform:rotate(360deg)}}.buddy-draft{border-top:1px solid var(--line);align-items:center;gap:10px;padding:10px 0;display:flex}.buddy-draft:first-child{border-top:0;padding-top:0}.buddy-draft .grow,.buddy-banner .grow{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.buddy-banner{background:var(--accent-soft);border-color:#0000;flex-wrap:wrap;align-items:center;gap:14px;padding:14px 16px;display:flex}.row-center{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.nowrap{white-space:nowrap;margin-right:12px}.block{display:block}.actions.center{justify-content:center}.field-title{font-size:14px;font-weight:600}.input.big{min-height:52px;font-size:17px}.ob .chip,.tr .chip{border:1px solid var(--line);background:var(--surface);min-height:38px;color:var(--fg);cursor:pointer;border-radius:99px;align-items:center;gap:8px;padding:0 14px;font-size:14px;font-weight:600;display:inline-flex}.ob .chip.dashed{color:var(--muted);border-style:dashed}.ob .chip[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent)}.ob .avatar,.tr .avatar{background:var(--accent);width:30px;height:30px;color:var(--accent-fg);border-radius:50%;flex:none;place-items:center;font-size:11px;font-weight:700;display:grid}.ob-pop{animation:.35s cubic-bezier(.2,.9,.3,1.3) both ob-pop}@keyframes ob-pop{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:none}}.ob-xp{background:var(--accent-soft);color:var(--fg);font:600 12px var(--font-mono);border-radius:99px;align-items:center;gap:6px;padding:3px 10px;display:inline-flex;position:relative}.ob{flex-direction:column;min-height:100%;display:flex}.ob-head{padding-block:16px;padding-inline:max(32px, env(safe-area-inset-left)) max(32px, env(safe-area-inset-right));border-bottom:1px solid var(--line);align-items:center;gap:40px;display:flex}.ob-prog{flex:1;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;display:grid}.ob-prog span{font:500 11px var(--font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);flex-direction:column;gap:6px;display:flex}.ob-prog i{background:var(--surface-2);border-radius:4px;height:4px;transition:background-color .3s;display:block}.ob-prog .on{color:var(--fg)}.ob-prog .on i{background:var(--accent)}.ob-body{flex:1;grid-template-columns:minmax(0,540px) minmax(0,1fr);display:grid}.ob-q{padding:40px 48px 40px max(48px, env(safe-area-inset-left));flex-direction:column;justify-content:center;gap:16px;min-width:0;animation:.35s both ob-rise;display:flex}@keyframes ob-rise{0%{opacity:.3;transform:translateY(8px)}to{opacity:1;transform:none}}.ob-stack{flex-direction:column;gap:20px;display:flex}.ob-stack.tight{gap:10px}.ob-headline{flex-direction:column;gap:8px;display:flex}.ob-headline h1{font-size:clamp(26px,3vw,34px)}.ob-headline p{font-size:16px}.ob-actions{flex-wrap:wrap;align-items:center;gap:10px;padding-top:4px;display:flex}.ob-actions .push{margin-left:auto}.ob-side{padding:32px max(32px, env(safe-area-inset-right)) 32px 0;flex-direction:column;gap:10px;min-width:0;display:flex}.ob-opts{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.ob-opt{text-align:left;border:1px solid var(--line);background:var(--surface);color:var(--fg);cursor:pointer;border-radius:12px;flex-direction:column;gap:4px;min-width:0;padding:14px;display:flex}.ob-opt[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft)}.ob-opt b{overflow-wrap:anywhere;font-size:16px}.ob-themes{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.ob-theme{border:1px solid var(--line);background:var(--surface);text-align:left;cursor:pointer;color:var(--fg);border-radius:12px;flex-direction:column;gap:6px;padding:10px;font-size:14px;font-weight:600;display:flex}.ob-theme[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.ob-sw{border-radius:8px;height:52px;display:block;position:relative}.ob-sw i{border-radius:4px;width:46%;height:8px;position:absolute;top:9px;left:9px}.ob-sw b{border-radius:50%;width:20px;height:20px;position:absolute;bottom:9px;right:9px}.ob-addbox{border:1px solid var(--accent);background:var(--surface);border-radius:12px;align-items:center;gap:8px;min-height:52px;padding:0 6px 0 14px;display:flex}.ob-addbox input{min-width:0;color:var(--fg);background:0 0;border:0;outline:none;flex:1;font-size:17px;font-weight:500}.ob-colors{flex-wrap:wrap;gap:8px;display:flex}.ob-colors button{width:28px;height:28px;box-shadow:inset 0 0 0 2px var(--bg);cursor:pointer;border:2px solid #0000;border-radius:50%}.ob-colors button[aria-pressed=true]{border-color:var(--fg)}.ob-chips{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.ob-x{color:var(--muted);cursor:pointer;background:0 0;border:0;min-width:24px;min-height:24px;padding:0 2px;font-size:18px;line-height:1}.ob-box{border:1px solid var(--line);background:var(--surface);border-radius:14px;flex-direction:column;gap:14px;padding:18px;display:flex}.ob-cal-icon{background:var(--accent-soft);width:44px;height:44px;color:var(--accent);border-radius:12px;flex:none;place-items:center;display:grid}.ob-events{flex-direction:column;gap:6px;display:flex}.ob-ev{border:1px solid var(--line);background:var(--bg);border-radius:10px;grid-template-columns:auto auto minmax(0,1fr) auto;align-items:center;gap:12px;padding:10px 12px;display:grid}.ob-ev.off{opacity:.5}.ob-check{width:20px;height:20px;accent-color:var(--accent)}.ob-date{text-align:center;background:var(--surface-2);border-radius:8px;width:44px;padding:4px 0;line-height:1.1}.ob-date b{font-size:16px;display:block}.ob-date span{font:500 10px var(--font-mono);text-transform:uppercase;color:var(--muted)}.ob-ev-title{flex-direction:column;min-width:0;display:flex}.ob-select{border:1px solid var(--line);background:var(--surface);max-width:130px;min-height:36px;color:var(--fg);border-radius:8px;padding:0 8px;font-size:13px}.ob-select.warn{border-color:var(--warn)}.ob-word{border-radius:99px;width:180px;min-height:38px}.ob-grid2{grid-template-columns:minmax(0,1fr) minmax(0,170px);gap:10px;display:grid}.ob-paste{resize:vertical;min-height:130px;font:13px/1.6 var(--font-mono);padding:10px 12px}.ob-summary{flex-direction:column;margin:0;display:flex}.ob-summary div{border-top:1px solid var(--line);grid-template-columns:96px minmax(0,1fr);gap:14px;padding:10px 0;display:grid}.ob-summary div:last-child{border-bottom:1px solid var(--line)}.ob-summary dt{color:var(--muted)}.ob-summary dd{min-width:0;margin:0}.ob-tour-cta{border:1px solid var(--accent);background:var(--accent-soft);border-radius:14px;flex-direction:column;gap:12px;padding:18px;display:flex}.ob-pv{border:1px solid var(--line);background:var(--bg);border-radius:16px;flex:1;min-height:460px;transition:box-shadow .3s,border-color .3s;display:flex;overflow:hidden;box-shadow:0 24px 60px #00000047}.ob-pv.all{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft), 0 24px 60px #00000047}.ob-pv .label{font-size:9px}.ob-pv-side{border-right:1px solid var(--line);flex-direction:column;flex:none;gap:6px;width:160px;padding:18px 12px;display:flex}.ob-pv-nav{background:var(--surface-2);border-radius:6px;height:22px;display:block}.ob-pv-nav.on{background:var(--accent-soft)}.ob-pv-cls{border-radius:8px;flex-direction:column;gap:2px;margin-top:6px;padding:6px;font-size:12px;font-weight:600;display:flex}.ob-pv-cls>span{align-items:center;gap:6px;padding:3px 4px;display:flex}.ob-pv-me{align-items:center;gap:8px;min-width:0;margin-top:auto;font-size:12px;font-weight:600;display:flex}.ob-pv-me .avatar{width:26px;height:26px;font-size:10px}.ob-pv-main{flex-direction:column;flex:1;gap:14px;min-width:0;padding:22px;display:flex}.ob-pv-greet{overflow-wrap:anywhere;border-radius:6px;align-self:flex-start;font-size:26px;font-weight:700}.ob-pv-tiles{border-radius:10px;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.ob-pv-tile{border:1px solid var(--line);background:var(--surface);border-radius:10px;flex-direction:column;gap:2px;min-width:0;padding:10px 12px;display:flex}.ob-pv-tile b{font-size:18px}.ob-pv-tile span:last-child{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:11px;overflow:hidden}.ob-pv-box{border:1px solid var(--line);background:var(--surface);border-radius:12px;flex-direction:column;gap:10px;padding:14px 16px;display:flex}.ob-pv-row{align-items:center;gap:10px;font-size:13px;display:flex}.ob-pv-row b{flex:1;min-width:0}.ob-pv-chip{background:var(--accent);color:var(--accent-fg);border-radius:8px;padding:4px 10px;font-size:11px;font-weight:700}.ob-pv-ghosts span{background:var(--surface-2);border-radius:5px;height:10px;display:block}.ob-hl{outline:2px dashed var(--accent);outline-offset:5px;animation:1.6s ease-in-out infinite ob-pulse}@keyframes ob-pulse{50%{outline-color:#0000}}@media (width<=900px){.ob-head{padding-inline:max(16px, env(safe-area-inset-left)) max(16px, env(safe-area-inset-right));flex-wrap:wrap;gap:16px}.ob-prog{flex-basis:100%;order:3}.ob-prog span{gap:0;font-size:0}.ob-body{grid-template-columns:minmax(0,1fr)}.ob-side{padding:14px max(16px, env(safe-area-inset-right)) 0 max(16px, env(safe-area-inset-left));order:-1}.ob-side .hide-phone{display:none}.ob-q{padding:20px max(16px, env(safe-area-inset-right)) 40px max(16px, env(safe-area-inset-left));justify-content:flex-start}.ob-pv{flex:none;min-height:0}.ob-pv-side,.ob-pv-ghosts{display:none}.ob-pv-main{gap:10px;padding:14px}.ob-pv-greet{font-size:20px}.ob-themes{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=520px){.ob-opts,.ob-grid2{grid-template-columns:minmax(0,1fr)}.ob-ev{grid-template-columns:auto auto minmax(0,1fr)}.ob-ev .ob-select{grid-column:1/-1;max-width:none}}.tr{grid-template-columns:232px minmax(0,1fr);min-height:100%;display:grid}.tr-nav{border-right:1px solid var(--line);background:var(--bg);flex-direction:column;gap:2px;height:100vh;padding:20px 12px 14px;display:flex;position:sticky;top:0}.tr-nav-item{width:100%;min-height:40px;color:var(--muted);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:8px;align-items:center;gap:10px;padding:8px 10px;font-weight:500;display:flex}.tr-nav-item svg{flex:none;width:18px;height:18px}.tr-nav-item:hover{background:var(--surface-2);color:var(--fg)}.tr-nav-item.on{background:var(--accent-soft);color:var(--fg)}.tr-nav-item.on svg{color:var(--accent)}.tr-nav-item kbd{border:0;margin-left:auto}.tr-nav-foot{border-top:1px solid var(--line);align-items:center;gap:8px;margin-top:auto;padding:12px 2px 0 6px;display:flex}.tr-me{flex-direction:column;flex:1;min-width:0;line-height:1.25;display:flex}.tr-me span{color:var(--muted);font-size:11px}.tr-top,.tr-tabs{display:none}.tr-main{min-width:0;padding-block:28px 96px;padding-inline:max(32px, env(safe-area-inset-left)) max(32px, env(safe-area-inset-right))}.tr-view{flex-direction:column;gap:20px;max-width:920px;margin:0 auto;animation:.3s both ob-rise;display:flex}.tr-banner{border:1px dashed var(--line);color:var(--muted);border-radius:99px;align-self:flex-start;align-items:center;gap:8px;padding:6px 12px;font-size:13px;display:flex}.tr-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px;display:flex}.tr-head h1{font-size:clamp(24px,3vw,30px)}.tr-tiles{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.tr-tile{flex-direction:column;gap:2px;min-width:0;padding:14px 16px;display:flex}.tr-tile b{font-variant-numeric:tabular-nums;font-size:24px;line-height:1.2}.tr-panel{flex-direction:column;gap:14px;padding:20px;display:flex}.tr-panel h2{font-size:19px}.tr-plan{border-top:1px solid var(--line);flex-direction:column;gap:8px;padding-top:12px;display:flex}.tr-card{perspective:1400px;cursor:pointer;touch-action:pan-y;-webkit-user-select:none;user-select:none;outline:none;height:min(340px,46vh);position:relative}.tr-card-inner{transform-style:preserve-3d;transition:transform .45s cubic-bezier(.2,.7,.2,1);position:absolute;inset:0}.tr-card.flipped .tr-card-inner{transform:rotateY(180deg)}.tr-face{border:1px solid var(--line);background:var(--surface);backface-visibility:hidden;text-align:center;border-radius:18px;place-items:center;padding:32px;font-size:clamp(22px,3vw,32px);font-weight:600;display:grid;position:absolute;inset:0}.tr-face.tr-back{background:color-mix(in srgb, var(--accent-soft) 70%, var(--surface));font-size:clamp(17px,2.2vw,22px);font-weight:500;transform:rotateY(180deg)}.tr-card:focus-visible .tr-face{box-shadow:0 0 0 2px var(--accent)}.tr-hint{z-index:2;font:600 11px var(--font-mono);text-transform:uppercase;letter-spacing:.06em;pointer-events:none;border-radius:99px;padding:4px 12px;position:absolute;top:14px;left:50%;transform:translate(-50%)}.tr-hint.know{background:var(--good-soft);color:var(--good)}.tr-hint.learn{background:var(--warn-soft);color:var(--warn)}.tr-marks{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.tr-marks .btn{min-height:52px}.tr-prompt{background:var(--surface-2);text-align:center;border-radius:12px;place-items:center;min-height:110px;padding:16px;font-size:24px;font-weight:700;display:grid}.tr-options{gap:10px;display:grid}.tr-option{border:1px solid var(--line);background:var(--surface);min-height:56px;color:var(--fg);text-align:left;cursor:pointer;border-radius:12px;flex-direction:column;align-items:flex-start;gap:2px;padding:12px 14px;display:flex}.tr-option.row{flex-direction:row;align-items:center;gap:12px}.tr-option:hover:not(:disabled){border-color:var(--accent)}.tr-option.right{border-color:var(--good);background:var(--good-soft)}.tr-option.wrong{border-color:var(--warn);background:var(--warn-soft)}.tr-option:disabled{cursor:default}.tr-match{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.tr-tile-btn{border:1px solid var(--line);background:var(--surface);min-height:100px;color:var(--fg);cursor:pointer;border-radius:12px;padding:12px;font-size:14px;transition:opacity .25s,transform .15s}.tr-tile-btn.picked{border-color:var(--accent);background:var(--accent-soft)}.tr-tile-btn.miss{border-color:var(--warn);background:var(--warn-soft);animation:.3s tr-shake}.tr-tile-btn.gone{opacity:0;pointer-events:none;transform:scale(.9)}@keyframes tr-shake{25%{transform:translate(-4px)}75%{transform:translate(4px)}}.tr-classes{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;display:grid}.tr-class{text-align:left;color:var(--fg);cursor:pointer;border-top-width:3px;flex-direction:column;gap:4px;padding:16px;display:flex}.tr-card-row{border-top:1px solid var(--line);justify-content:space-between;gap:12px;padding-top:8px;display:flex}.tr-month{grid-template-columns:repeat(7,minmax(0,1fr));gap:4px;display:grid}.tr-day{background:var(--bg);min-width:0;min-height:70px;font:600 12px var(--font-mono);border-radius:8px;flex-direction:column;gap:3px;padding:6px;display:flex}.tr-day.out{opacity:.4}.tr-day.today .n{background:var(--accent);color:var(--accent-fg);border-radius:99px;align-self:flex-start;padding:0 6px}.tr-day-ev{border:0;border-left:3px solid var(--accent);background:var(--surface-2);color:var(--fg);font:600 11px var(--font);text-align:left;cursor:pointer;text-overflow:ellipsis;white-space:nowrap;border-radius:5px;padding:3px 6px;overflow:hidden}.tr-ramp{align-items:flex-end;gap:4px;height:120px;display:flex}.tr-ramp div{flex-direction:column;flex:1;justify-content:flex-end;align-items:center;gap:4px;height:100%;display:flex}.tr-ramp i{background:var(--accent);transform-origin:bottom;border-radius:4px 4px 0 0;width:100%;animation:.6s cubic-bezier(.2,.8,.2,1) both tr-grow;display:block}.tr-ramp i.test{background:var(--warn)}.tr-ramp span{font:500 10px var(--font-mono);color:var(--muted)}@keyframes tr-grow{0%{transform:scaleY(0)}}.tr-heat{grid-template-rows:repeat(7,12px);grid-auto-columns:12px;grid-auto-flow:column;gap:3px;display:grid;overflow-x:auto}.tr-heat i{background:var(--surface-2);border-radius:3px}.tr-heat i.on{background:var(--accent)}.tr-friend{align-items:center;gap:12px;padding:14px 16px;display:flex}.tr-back{z-index:70;background:#05080f99;place-items:center;padding:16px;animation:.2s both tr-fade;display:grid;position:fixed;inset:0}@keyframes tr-fade{0%{opacity:0}}.tr-modal{border:1px solid var(--line);background:var(--surface);border-radius:16px;flex-direction:column;gap:14px;width:min(460px,100%);padding:24px;animation:.3s both ob-pop;display:flex}.tr-modal h2{font-size:22px}.tr-modal.center{text-align:center;align-items:center}.tr-badge{background:var(--accent);width:88px;height:88px;color:var(--accent-fg);border-radius:24px;place-items:center;display:grid;transform:rotate(-6deg);box-shadow:0 14px 30px #00000059}.tr-spot{z-index:60;pointer-events:none;border-radius:12px;transition:opacity .2s;position:fixed;top:0;left:0;box-shadow:0 0 0 9999px #05080f99}.tr-spot:after{content:"";border:2px solid var(--accent);border-radius:15px;animation:1.4s ease-out infinite tr-ring;position:absolute;inset:-4px}@keyframes tr-ring{to{opacity:0;transform:scale(1.08)}}.tr-coach{z-index:75;border:1px solid var(--accent);background:var(--surface);border-radius:14px;flex-direction:column;gap:10px;width:min(360px,100% - 32px);padding:16px;display:flex;position:fixed;box-shadow:0 20px 50px #00000073}.tr-coach h3{font-size:17px}.tr-coach.nudge{animation:.35s tr-shake}.tr-coach-bar{background:var(--surface-2);border-radius:4px;height:4px;overflow:hidden}.tr-coach-bar span{background:var(--accent);height:100%;transition:width .4s;display:block}.tr-xp-pop{color:var(--good);pointer-events:none;font-weight:700;animation:.9s ease-out forwards tr-xp;position:absolute;top:-4px;right:0}@keyframes tr-xp{0%{opacity:1;transform:none}to{opacity:0;transform:translateY(-28px)}}.tr-explore{left:50%;bottom:calc(20px + env(safe-area-inset-bottom));z-index:65;border:1px solid var(--line);background:var(--surface);border-radius:99px;align-items:center;gap:12px;padding:8px 8px 8px 16px;display:flex;position:fixed;transform:translate(-50%);box-shadow:0 12px 30px #00000059}.tr-toast{left:50%;bottom:calc(80px + env(safe-area-inset-bottom));z-index:90;background:var(--fg);max-width:calc(100% - 32px);color:var(--bg);border-radius:12px;padding:12px 18px;font-weight:600;animation:.3s both ob-pop;position:fixed;transform:translate(-50%);box-shadow:0 12px 30px #00000059}.tr-confetti{z-index:95;pointer-events:none;position:fixed;inset:0}@media (width<=760px){.tr{grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr)}.tr-nav{display:none}.tr-top{z-index:20;padding-block:10px;padding-inline:max(16px, env(safe-area-inset-left)) max(16px, env(safe-area-inset-right));background:var(--surface);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;display:flex;position:sticky;top:0}.tr-tabs{z-index:20;padding:6px max(4px, env(safe-area-inset-right)) calc(6px + env(safe-area-inset-bottom)) max(4px, env(safe-area-inset-left));background:var(--bg);border-top:1px solid var(--line);justify-content:space-around;display:flex;position:fixed;bottom:0;left:0;right:0}.tr-tabs .tr-nav-item{text-align:center;flex-direction:column;justify-content:center;gap:3px;min-height:52px;padding:6px 2px;font-size:10px}.tr-tabs .tr-nav-item.on{color:var(--accent);background:0 0}.tr-main{padding-block:16px 110px;padding-inline:max(16px, env(safe-area-inset-left)) max(16px, env(safe-area-inset-right))}.tr-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.tr-day{min-height:46px;padding:3px}.tr-day-ev{background:var(--accent);border-left:0;height:7px;padding:0;font-size:0}.tr-explore{bottom:calc(76px + env(safe-area-inset-bottom))}.tr-toast{bottom:calc(140px + env(safe-area-inset-bottom))}}@media (prefers-reduced-motion:reduce){.ob *,.tr *,.ob-q,.tr-view{transition:none!important;animation:none!important}}.study-view{max-width:860px}.study-head{grid-template-columns:minmax(0,1fr) auto auto;align-items:end;gap:12px;display:grid}.study-title{flex-direction:column;gap:2px;min-width:0;display:flex}.study-title .back{text-decoration:none}.mode-tabs{align-self:end}.mode-tabs a{color:var(--muted);border-radius:99px;align-items:center;gap:6px;padding:7px 14px;font-weight:600;text-decoration:none;display:inline-flex}.mode-tabs a.active{background:var(--surface);color:var(--fg);box-shadow:0 1px 3px #00000026}.mode-tabs kbd{font-size:.6rem}.small-seg button{padding:5px 12px;font-size:.82rem}.options-list .setting-row:first-child{border-top:0;padding-top:0}.resume,.summary{align-items:flex-start}.summary .progress-bar,.resume .progress-bar{width:100%}.flash{flex-direction:column;gap:16px;display:flex}.flash-top{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.flash-counts{font-family:var(--font-mono)}.flashcard{perspective:1400px;cursor:pointer;touch-action:pan-y;-webkit-user-select:none;user-select:none;outline:none;min-height:min(420px,56vh);transition:transform .12s;position:relative}.flashcard:focus-visible .flash-face{box-shadow:0 0 0 2px var(--accent)}.flash-inner{transform-style:preserve-3d;transition:transform .45s cubic-bezier(.2,.7,.2,1);position:absolute;inset:0}.flashcard.flipped .flash-inner{transform:rotateY(180deg)}.flash-face{border:1px solid var(--line);background:var(--surface);backface-visibility:hidden;text-align:center;border-radius:18px;place-items:center;padding:48px 32px;display:grid;position:absolute;inset:0;overflow:auto}.flash-face.back{background:color-mix(in srgb, var(--accent-soft) 45%, var(--surface));transform:rotateY(180deg)}.flashcard.hint-know .flash-face{border-color:var(--good)}.flashcard.hint-learning .flash-face{border-color:var(--warn)}.face-text{overflow-wrap:anywhere;font-size:1.15rem;line-height:1.45}.face-text.large{font-size:clamp(1.3rem,3.2vw,2rem);font-weight:600}.face-def{flex-direction:column;align-items:center;gap:14px;display:flex}.face-img{object-fit:contain;border-radius:10px;max-width:min(100%,360px);max-height:220px}.face-diagram{width:min(100%,560px);max-height:46vh;position:relative}.face-diagram img{object-fit:contain;border-radius:10px;width:100%;height:100%;position:absolute;inset:0}.face-diagram .pin{background:var(--warn);color:#1a1205;width:30px;height:30px;font:700 .85rem var(--font-mono);border:2px solid #fff;border-radius:50%;place-items:center;display:grid;position:absolute;transform:translate(-50%,-50%);box-shadow:0 2px 8px #00000073}.flash-set{z-index:2;pointer-events:none;position:absolute;top:14px;left:18px}.flash-tools{z-index:2;gap:2px;display:flex;position:absolute;top:10px;right:10px}.flash-tools .icon-btn{font-size:1rem}.flash-tools .starred{color:var(--warn)}.swipe-hint{z-index:3;font:600 .75rem var(--font-mono);text-transform:uppercase;letter-spacing:.06em;border-radius:99px;padding:4px 12px;position:absolute;top:18px;left:50%;transform:translate(-50%)}.swipe-hint.know{background:var(--good-soft);color:var(--good)}.swipe-hint.learning{background:var(--warn-soft);color:var(--warn)}.flash-actions{grid-auto-columns:1fr;grid-auto-flow:column;gap:10px;display:grid}.btn.mark{min-height:52px}.btn.mark.wrong{color:var(--warn)}.btn.mark.right{color:var(--good)}.btn.mark.wrong:hover{background:var(--warn-soft)}.btn.mark.right:hover{background:var(--good-soft)}.btn.mark kbd,.btn kbd{color:inherit}.flash-foot{justify-content:space-between;align-items:center;display:flex}.pop{border-color:color-mix(in srgb, var(--accent) 50%, var(--line))}.pop-prompt,.write-prompt{background:var(--surface-2);text-align:center;border-radius:12px;place-items:center;min-height:140px;padding:18px;display:grid}.options{grid-template-columns:1fr 1fr;gap:10px;display:grid}.option{border:1px solid var(--line);background:var(--surface);min-height:60px;color:var(--fg);text-align:left;cursor:pointer;border-radius:12px;align-items:center;gap:12px;padding:12px 14px;font-size:.95rem;display:flex}.option:hover:not(:disabled){border-color:var(--accent)}.option kbd{flex:none}.option .face-img{max-height:80px}.option.right{border-color:var(--good);background:var(--good-soft)}.option.wrong{border-color:var(--warn);background:var(--warn-soft)}.option.dim{opacity:.5}.option:disabled{cursor:default}.tf-shown{border:1px dashed var(--line);text-align:center;border-radius:12px;flex-direction:column;align-items:center;gap:6px;padding:14px;display:flex}.write,.quiz{flex-direction:column;gap:14px;display:flex}.write-card.right,.quiz-card.right{border-color:var(--good)}.write-card.wrong,.quiz-card.wrong{border-color:var(--warn)}.write-form{flex-direction:column;gap:10px;display:flex}.write-input{min-height:52px;font-size:1.1rem}.write-feedback{border-top:1px solid var(--line);flex-direction:column;gap:10px;padding-top:6px;display:flex}.review-list{flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.review-list li{border-top:1px solid var(--line);grid-template-columns:1fr auto 1.4fr;align-items:center;gap:12px;padding:10px 0;display:grid}.review-list li:first-child{border-top:0}.review-list .face-text{font-size:.95rem}.quiz-setup{align-items:flex-start}.match{flex-direction:column;gap:14px;display:flex}.match-time{margin-left:auto;font-size:1.3rem;font-weight:600}.match-grid{grid-template-columns:repeat(4,1fr);gap:10px;display:grid}.match-tile{text-align:center;cursor:pointer;min-height:110px;color:var(--fg);overflow-wrap:anywhere;place-items:center;padding:12px;font-size:.92rem;transition:transform .12s,opacity .25s;display:grid}.match-tile img{object-fit:contain;border-radius:6px;max-width:100%;max-height:90px}.match-tile:hover:not(:disabled){border-color:var(--accent)}.match-tile.picked{border-color:var(--accent);background:var(--accent-soft)}.match-tile.miss{border-color:var(--warn);background:var(--warn-soft);animation:.3s shake}.match-tile.gone{opacity:0;pointer-events:none;transform:scale(.92)}@keyframes shake{25%{transform:translate(-4px)}75%{transform:translate(4px)}}@media (width<=760px){.study-head{grid-template-columns:minmax(0,1fr) auto}.mode-tabs{grid-area:2/1/auto/-1;grid-template-columns:repeat(auto-fit,minmax(0,1fr));justify-self:stretch;display:grid}.mode-tabs a{justify-content:center;padding:7px 4px;font-size:.85rem}.mode-tabs kbd,.flash-foot .hide-phone{display:none}.flashcard{min-height:max(240px,100dvh - 440px)}.flash-face{padding:44px 18px 24px}.flash-actions{gap:8px}.btn.mark{padding:8px 6px;font-size:.88rem}.btn.mark kbd{display:none}.options{grid-template-columns:1fr}.match-grid{grid-template-columns:repeat(3,1fr)}.match-tile{min-height:88px;padding:8px;font-size:.82rem}.review-list li{grid-template-columns:1fr;gap:2px}.review-list li>.muted{display:none}}
