.library-shelves{flex-wrap:wrap;gap:8px;margin:0 0 28px;padding:0;list-style:none;display:flex}.library-shelves a{border-radius:var(--radius-full);background:var(--surface);border:1.5px solid var(--line);min-height:44px;transition:transform var(--quick) var(--spring), border-color var(--quick) var(--ease);align-items:center;gap:8px;padding:0 16px;font-size:15px;font-weight:700;text-decoration:none;display:inline-flex}.library-shelves a:hover{border-color:var(--primary);transform:translateY(-2px)}.library-shelves span{white-space:nowrap;color:var(--ink-muted);font-size:13px;font-weight:600}.library-foot{text-align:center;justify-items:center;gap:12px;margin-top:24px;display:grid}.library-foot p{color:var(--ink-muted);font-size:15px}.library-foot a:not(.button){color:var(--primary);font-weight:700}@media (max-width:639px){#library .deck-grid>li:nth-child(n+5){display:none}}
.kd-hero{grid-template-columns:minmax(0,1fr);gap:12px;width:100%;display:grid}.kd-head{flex-wrap:wrap;align-items:center;gap:8px 10px;display:flex}.kd-bar{flex-basis:100%;gap:4px;margin:0;padding:0;list-style:none;display:flex}.kd-segment{border-radius:var(--radius-full);background:var(--track);flex:1;height:5px;overflow:hidden}.kd-fill{border-radius:inherit;background:var(--primary);transform-origin:0;height:100%;display:block;transform:scaleX(0)}.kd-segment.is-done .kd-fill{transform:scaleX(1)}.kd-segment.is-current .kd-fill{animation:kd-fill var(--lasts,6s) linear forwards}@keyframes kd-fill{to{transform:scaleX(1)}}.kd-eyebrow{color:var(--ink-muted);letter-spacing:.08em;text-transform:uppercase;font-size:12px;font-weight:800}.kd-head-actions{gap:10px;margin-left:auto;display:flex}.kd-icon,.kd-skip{border:1px solid var(--line);border-radius:var(--radius-full);background:var(--surface);min-width:44px;min-height:44px;color:var(--ink);font:inherit;cursor:pointer;transition:transform var(--quick) var(--spring), background var(--quick) ease;font-weight:700}.kd-icon{place-items:center;padding:0;display:inline-grid}.kd-skip{padding:0 18px}.kd-icon:active,.kd-skip:active{transform:scale(.94)}.kd-body{position:relative}.kd-next{z-index:2;cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:0;width:100%;position:absolute;inset:0}.kd-next:focus-visible{outline:3px solid var(--primary);outline-offset:4px;border-radius:var(--radius-xl)}.kd-show{animation:kd-in .24s var(--ease);gap:12px;display:grid}@keyframes kd-in{0%{opacity:0;transform:translateY(10px)scale(.98)}}.kd-caption{align-items:flex-start;gap:10px;min-height:72px;display:flex}.kd-karti{flex:none;width:64px;height:64px}.kd-line{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-soft);flex:1;margin:0;padding:12px 16px;font-weight:700;line-height:1.35;position:relative}.kd-line:before{content:"";background:inherit;border-left:1px solid var(--line);border-bottom:1px solid var(--line);width:12px;height:12px;position:absolute;top:50%;left:-7px;transform:translateY(-50%)rotate(45deg)}.kd-turn-title{color:var(--primary)}.kd-stage{position:relative}.kd-stage-card{pointer-events:none;-webkit-user-select:none;user-select:none}.kd-card{border:2px solid var(--line);border-radius:var(--radius-xl);background:var(--surface);min-height:300px;box-shadow:var(--shadow-lift);transition:border-color var(--quick) ease;border-bottom-width:5px;grid-template-columns:minmax(0,1fr);align-content:start;gap:14px;padding:20px;display:grid}.kd-card.is-right{border-color:var(--success)}.kd-card.is-wrong{border-color:var(--danger)}.kd-kana{text-align:center;transform-style:preserve-3d;place-items:center}.kd-kana.is-flipped{animation:kd-flip .42s var(--spring)}@keyframes kd-flip{0%{transform:perspective(900px)rotateY(-80deg)}}.kd-glyph{font-family:var(--font-sans), "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;margin:0;font-size:clamp(5rem,28vw,8rem);font-weight:700;line-height:1}.kd-back{gap:6px;display:grid}.kd-romaji{color:var(--primary);font-size:2.2rem}.kd-hint,.kd-explanation,.kd-kept{color:var(--ink-muted);margin:0;font-size:14px}.kd-hint{letter-spacing:.06em;text-transform:uppercase;font-weight:800}.kd-prompt{margin:0;font-size:1.15rem;font-weight:700;line-height:1.35}.kd-signals{border-radius:var(--radius-md);background:var(--background);font-family:var(--font-mono), ui-monospace, monospace;text-align:center;white-space:pre-wrap;margin:0;padding:18px 12px;font-size:1.5rem;font-weight:700}.kd-button{border-radius:var(--radius-full);background:var(--primary);min-height:48px;color:var(--on-primary);transition:opacity var(--quick) ease;place-items:center;font-weight:800;display:grid}.kd-button.is-idle{opacity:.45}.kd-button-ghost{border:2px solid var(--line);background:var(--surface);color:var(--ink)}.kd-button-understand{background:var(--danger);justify-self:center;padding:0 24px}.kd-field{border:2px solid var(--line);border-radius:var(--radius-md);letter-spacing:.08em;align-items:center;min-height:48px;padding:0 16px;font-size:1.1rem;font-weight:700;display:flex}.kd-placeholder{color:var(--ink-muted);letter-spacing:0;font-weight:500}.kd-caret{background:var(--primary);width:2px;height:1.2em;margin-left:2px;animation:.9s step-end infinite kd-caret}@keyframes kd-caret{50%{opacity:0}}.kd-verdict{margin:0;font-size:1.15rem;font-weight:800}.kd-verdict-right{color:var(--success)}.kd-verdict-wrong{color:var(--danger)}.kd-image,.kd-flag-image{border-radius:var(--radius-md);justify-self:center;height:auto}.kd-image{width:96px}.kd-flag-image{width:min(220px,70%);box-shadow:var(--shadow-soft)}.kd-choices{gap:10px;margin:0;padding:0;list-style:none;display:grid}.kd-choice{border:2px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);width:100%;min-height:52px;color:var(--ink);font:inherit;text-align:left;cursor:pointer;transition:transform var(--quick) var(--spring), border-color var(--quick) ease, background var(--quick) ease;border-bottom-width:4px;align-items:center;gap:12px;padding:8px 14px;font-weight:600;display:flex}.kd-choice:not(:disabled):hover{border-color:var(--primary);transform:translateY(-1px)}.kd-choice:not(:disabled):active{transform:scale(.98)}.kd-choice:disabled{cursor:default}.kd-choice-key{border:2px solid var(--line);border-radius:var(--radius-sm);width:28px;height:28px;color:var(--ink-muted);flex:none;place-items:center;font-size:13px;font-weight:800;display:inline-grid}.kd-choice-right{border-color:var(--success);background:var(--success-soft)}.kd-choice-wrong{border-color:var(--danger);background:var(--danger-soft)}.kd-choice-faded{opacity:.55}.kd-why{border-radius:var(--radius-lg);background:var(--info-soft);animation:kd-in .24s var(--ease);gap:10px;padding:14px 16px;display:grid}.kd-why p{margin:0;font-weight:600}.kd-round{font-size:1.4rem}.kd-scores{gap:8px;margin:0;padding:0;list-style:none;display:grid}.kd-scores li{border-radius:var(--radius-md);background:var(--background);justify-content:space-between;align-items:center;gap:10px;padding:12px 16px;font-weight:700;display:flex}.kd-player{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.kd-title{border-radius:var(--radius-full);background:var(--xp-soft);color:#7a5a00;animation:kd-in .24s var(--spring);padding:3px 10px;font-size:12px;font-weight:800}.kd-account{text-align:center;animation:kd-in .24s var(--ease);gap:8px;display:grid}.kd-create{width:100%}.karti-finger{z-index:1;pointer-events:none;width:0;height:0;transition:transform .64s var(--ease), opacity var(--quick) ease;will-change:transform;position:absolute;top:0;left:0;transform:translate(50%,110%)}.karti-finger[data-shown=false]{opacity:0}.karti-finger-pad{border:3px solid var(--primary);border-radius:var(--radius-full);background:color-mix(in srgb, var(--primary) 28%, transparent);width:44px;height:44px;box-shadow:0 6px 18px color-mix(in srgb, var(--primary) 35%, transparent);transition:transform .15s var(--spring);position:absolute;top:-22px;left:-22px}.karti-finger.is-pressed .karti-finger-pad{transform:scale(.78)}.karti-finger.is-pressed .karti-finger-pad:after{content:"";border:3px solid var(--primary);border-radius:inherit;animation:kd-ripple .52s var(--ease) forwards;position:absolute;inset:-3px}@keyframes kd-ripple{to{opacity:0;transform:scale(2.1)}}.kd-title{color:var(--xp)}@media (prefers-reduced-motion:reduce){.kd-segment.is-current .kd-fill{animation:none;transform:scaleX(1)}.kd-show,.kd-kana.is-flipped,.kd-why,.kd-title,.kd-account,.kd-caret{animation:none}}
.karti-layer{z-index:15;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);pointer-events:none;contain:strict;position:fixed;inset:0;overflow:hidden}.karti-travel{opacity:0;transform-origin:0 0;will-change:transform;transition:opacity .24s;position:absolute;top:0;left:0}.karti-pose{transform-origin:50% 82%}.karti-pose svg{display:block}
.freely{gap:16px;display:grid}.freely-panel{border-radius:var(--radius-xl);background:var(--surface);border:1px solid var(--line);align-content:start;justify-items:start;gap:14px;padding:24px 20px;display:grid}.freely-panel h3{font-size:24px}.freely-panel>p{color:var(--ink-muted);font-size:15.5px}.freely-tiles{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;width:100%;margin:6px 0;padding:0;list-style:none;display:grid}.freely-tiles li{border-radius:var(--radius-md);background:var(--tone-soft);min-height:60px;transition:transform var(--quick) var(--spring);align-items:center;gap:10px;padding:8px 12px 8px 8px;font-size:14px;font-weight:700;line-height:1.25;display:flex}.freely-tiles .explorer-icon{--icon-soft-tone:var(--surface)}.freely-tiles li:hover{transform:translateY(-2px)rotate(-1deg)}.freely-trail{border-radius:var(--radius-lg);background:var(--background);gap:14px;width:100%;margin:6px 0;padding:18px 16px;display:grid}.freely-trail-title{font-weight:800}.freely-trail .trail-step:nth-child(n+4){opacity:.8}@media (min-width:640px){.freely-tiles{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width:1000px){.freely{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);align-items:start;gap:24px}.freely-panel{padding:32px}}
.understand{gap:8px;display:grid}.understand-head{margin-bottom:16px}.understand-points{gap:10px;margin:4px 0 0;padding:0;list-style:none;display:grid}.understand-points li{padding-left:28px;font-weight:600;position:relative}.understand-points li:before{content:"";border-radius:var(--radius-full);border:3.5px solid var(--primary);width:14px;height:14px;position:absolute;top:5px;left:2px}.understand-stage{max-width:460px;display:grid;position:relative}.understand-card,.understand-sheet{border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-soft);gap:10px;padding:16px;display:grid}.understand-card{justify-items:center;width:82%;position:relative}.understand-card .art-chip{justify-self:start}.understand-map{width:120px}.sa-land{fill:var(--track)}.sa-peru,.sa-bolivia{stroke:var(--surface);stroke-width:2px;stroke-linejoin:round}.understand-map .sa-peru{fill:var(--track)}.understand-map .sa-bolivia{fill:var(--danger)}.understand-explorer .sa-peru{fill:var(--success)}.understand-explorer .sa-bolivia{fill:var(--danger-soft)}.understand-missed{border-radius:var(--radius-full);background:var(--danger-soft);color:var(--danger);padding:4px 10px;font-size:13px;font-weight:800;position:absolute;top:54px;right:14px}.understand-button{border-radius:var(--radius-full);background:var(--primary);min-height:44px;color:var(--on-primary);justify-self:stretch;place-items:center;font-weight:800;display:grid}[data-playing] .understand-button{animation:understand-press 3.2s var(--spring) infinite}@keyframes understand-press{0%,70%,to{transform:none}78%{transform:scale(.95)}86%{transform:scale(1.03)}}.understand-sheet{z-index:1;border-color:var(--primary);width:88%;box-shadow:var(--shadow-lift);justify-self:end;margin-top:-18px;position:relative}[data-playing] .understand-sheet{animation:sheet-up .52s var(--spring) both}@keyframes sheet-up{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:none}}.understand-grip{background:var(--line);border-radius:4px;justify-self:center;width:40px;height:4px}.understand-explanation{align-items:flex-start;gap:10px;font-size:14.5px;font-weight:600;line-height:1.45;display:flex}.understand-explanation .ring{flex:none}.understand-explorer{border-radius:var(--radius-md);background:var(--background);justify-self:center;width:110px;padding:6px}.understand-related{color:var(--ink-muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px;font-weight:800}.understand-sheet ul{flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none;display:flex}.understand-sheet li{border-radius:var(--radius-full);background:var(--primary-soft);color:var(--primary);padding:6px 10px;font-size:13px;font-weight:700}@media (min-width:900px){.understand{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:64px}.understand-head{text-align:left;justify-items:start;margin:0}.understand-stage{justify-self:end;width:100%}}
.works-panel{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);text-align:center;justify-items:center;gap:20px;padding:32px 20px;display:grid}.works-diagram{grid-template-columns:auto minmax(28px,1fr) auto minmax(28px,1fr) auto;align-items:center;gap:8px;width:100%;max-width:460px;display:grid}.works-assistant{border:1px solid var(--line);border-radius:var(--radius-full);background:var(--background);letter-spacing:-.01em;padding:8px 12px;font-size:14px;font-weight:700}.works-karti{border-radius:var(--radius-md);background:var(--primary-soft);place-items:center;width:48px;height:48px;display:grid}.works-track{background:radial-gradient(circle, var(--ink-muted) 1.2px, transparent 1.6px) 0 50% / 8px 8px repeat-x;opacity:.9;height:12px;position:relative}.works-lane{opacity:0;width:calc(100% - 14px);animation:3.6s cubic-bezier(.45,0,.25,1) infinite paused works-run;position:absolute;inset:0 auto 0 0}.works-track-left .works-lane{animation-name:works-run-back;animation-delay:1.8s}.works-diagram[data-playing] .works-lane{animation-play-state:running}.works-card{border:2px solid var(--primary);background:#fff;border-radius:3px;width:14px;height:10px;position:absolute;top:1px;left:0;transform:rotate(-9deg)}@keyframes works-run{0%{opacity:0;transform:translate(0)}15%{opacity:1}80%{opacity:1}to{opacity:0;transform:translate(100%)}}@keyframes works-run-back{0%{opacity:0;transform:translate(100%)}15%{opacity:1}80%{opacity:1}to{opacity:0;transform:translate(0)}}.works-line{letter-spacing:-.015em;max-width:30ch;font-size:20px;line-height:1.3}@media (prefers-reduced-motion:reduce){.works-lane{opacity:1;animation:none;transform:translate(50%)}}@media (min-width:900px){.works-panel{gap:24px;padding:48px}.works-assistant{padding:10px 18px;font-size:16px}.works-line{font-size:26px}}
.hero{padding:20px 0 8px;position:relative;overflow:hidden}.hero-glow{z-index:-1;opacity:.55;pointer-events:none;display:none;position:absolute;top:-150px;right:-210px}.hero-glow .ring-track{stroke:#0000}.hero-grid{grid-template-columns:minmax(0,1fr);grid-template-areas:"intro""stage""pitch";gap:18px;display:grid}.hero-intro{grid-area:intro;justify-items:start;gap:12px;display:grid}.hero h1{letter-spacing:-.028em;font-size:34px;line-height:1.06}.hero-accent{color:var(--primary)}.hero-stage{grid-area:stage;position:relative}.hero-stage-demo{justify-self:center;width:100%;max-width:520px}.hero-stage-mascot{place-items:center;padding:8px 0;display:grid}.hero-mascot-alone{width:200px;height:200px}.hero-pitch{grid-area:pitch;gap:16px;padding-top:6px;display:grid}.hero-ctas{gap:10px;display:grid}.hero-note{color:var(--ink-muted);font-size:13.5px;font-weight:500}.steps{gap:12px;margin:0;padding:0;list-style:none;display:grid}.step{border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--line);gap:10px;padding:22px 20px;display:grid}.step .ring-center{font-size:18px}.step h3{margin-top:4px;font-size:20px}.step p{color:var(--ink-muted);font-size:15.5px}.features{gap:4px 24px;margin:28px 0 0;padding:0;list-style:none;display:grid}.features li{border-bottom:1px solid var(--line);gap:4px;padding:16px 0 16px 28px;display:grid;position:relative}.features li:before{content:"";border-radius:var(--radius-full);border:3.5px solid var(--primary);width:14px;height:14px;position:absolute;top:21px;left:2px}.features h3{letter-spacing:-.01em;font-size:16px}.features p{color:var(--ink-muted);font-size:15px}@media (min-width:640px){.hero-ctas{flex-wrap:wrap;display:flex}.features{grid-template-columns:repeat(2,1fr)}}@media (min-width:900px){.hero{padding:64px 0 24px}.hero-glow{display:block;top:-120px;right:-60px}.hero-grid{grid-template:"intro stage""pitch stage"1fr/minmax(0,1.05fr) minmax(0,1fr);align-items:start;gap:24px 64px}.hero-intro{align-self:end;padding-top:32px}.hero h1{font-size:50px}.hero-mascot-alone{width:340px;height:340px}.hero-pitch .lead{max-width:30em;font-size:19px}.steps{grid-template-columns:repeat(3,1fr);gap:16px}.step{padding:28px}.features{grid-template-columns:repeat(3,1fr);margin-top:40px}}