@font-face{font-family:Pinyin Serif;src:local(Times New Roman),local(TimesNewRomanPSMT),local(Noto Serif),local(DejaVu Serif),local(Liberation Serif);unicode-range:U+100-24F,U+300-36F}@font-face{font-family:Pinyin Serif;font-weight:700;src:local(Times New Roman Bold),local(TimesNewRomanPS-BoldMT),local(Noto Serif Bold),local(DejaVu Serif Bold),local(Liberation Serif Bold);unicode-range:U+100-24F,U+300-36F}:root{--paper:#f6f0e4;--paper-deep:#ebe1d1;--card:#fffaf1;--ink:#241b16;--muted:#625348;--red:#ae3f2f;--red-dark:#8d2d22;--red-wash:#f8deda;--jade:#277f70;--jade-dark:#15594e;--jade-wash:#dceee8;--line:#d8cabc;--line-strong:#8f7f71;--tone-1:#c0392b;--tone-2:#1e7d4f;--tone-3:#1f5fae;--tone-4:#7b3fa0;--tone-0:#6b6b6b;--sans:"Pinyin Serif", Georgia, "Times New Roman", serif;--display:"Pinyin Serif", "Palatino Linotype", Palatino, Georgia, serif;--pinyin:"Segoe UI", "Helvetica Neue", Roboto, "Noto Sans", Arial, sans-serif;--mono:ui-monospace, Consolas, monospace;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font:17px/1.5 var(--sans);color:var(--ink);background:var(--paper)}body{background:repeating-linear-gradient(0deg, #593c2206 0, #593c2206 1px, transparent 1px, transparent 5px), var(--paper);min-width:320px;margin:0}#root{text-align:left;width:100%;min-height:100svh;margin:0}p{margin:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--jade);outline-offset:2px}@media (prefers-color-scheme:dark){:root{--paper:#211c17;--paper-deep:#352d26;--card:#2a241e;--ink:#fff4e4;--muted:#d2c0ae;--red:#ee806b;--red-dark:#f39a88;--red-wash:#4a2a24;--jade:#78c4b2;--jade-dark:#9ddcca;--jade-wash:#273f39;--line:#5b4c40;--line-strong:#a08d7c;--tone-1:#ff8a7a;--tone-2:#6fd3a0;--tone-3:#8ab8ff;--tone-4:#d0a2f0;--tone-0:#b8b8b8;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}.primary{color:#211c17!important}}.app-shell{background:var(--paper);min-height:100svh;color:var(--ink)}.app-header{z-index:5;border-bottom:1px solid var(--line);background:color-mix(in srgb, var(--paper) 94%, transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);align-items:center;gap:16px;min-height:64px;padding:0 20px;display:flex;position:sticky;top:0}.brand{min-width:112px;min-height:44px;color:var(--ink);text-align:left;font-family:var(--display);cursor:pointer;background:0 0;border:0;align-content:center;padding:0;line-height:1;display:grid}.brand span{letter-spacing:.08em;text-transform:uppercase;color:var(--red);font-size:12px}.brand strong{letter-spacing:.04em;font-size:17px}.app-header nav{align-items:center;gap:2px;margin-left:auto;display:flex;overflow-x:auto}.app-header nav button{min-height:44px;color:var(--muted);font:600 13px var(--sans);white-space:nowrap;cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;align-items:center;gap:6px;padding:0 9px;display:inline-flex}.app-header nav button:hover,.app-header nav button.active{color:var(--ink);border-bottom-color:var(--red)}.menu-button{min-width:44px;min-height:44px;color:var(--ink);background:0 0;border:0;margin-left:auto;padding:10px;display:none}.page{box-sizing:border-box;text-align:left;width:min(100%,1080px);margin:0 auto;padding:42px 24px 72px}.page h1{max-width:760px;color:var(--ink);font:400 clamp(34px, 6vw, 60px)/1.04 var(--display);margin:0}.page h2{color:var(--ink);font-family:var(--display)}.page h3{font:700 18px var(--sans);color:var(--ink)}.page p{color:var(--muted)}.eyebrow{letter-spacing:.1em;text-transform:uppercase;margin:0 0 10px;font-size:12px;font-weight:800;color:var(--red)!important}.page-heading{margin-bottom:20px}.compact-heading h1{font-size:clamp(26px,5vw,40px)}.aside{font-size:14px}.home-intro{gap:18px;max-width:760px;padding:36px 0 48px;display:grid}.home-intro>p:not(.eyebrow){max-width:610px;font-size:19px;line-height:1.55}.reading-list{gap:14px;max-width:760px;padding-left:20px;line-height:1.6;display:grid}.session-list{gap:16px;display:grid}.session-band{border-top:1px solid var(--line);grid-template-columns:1fr auto;align-items:start;gap:18px;padding:24px 0;display:grid}.session-band h2{margin:0 0 5px;font-size:29px}.block-list{grid-column:1/-1;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:8px;display:grid}.block-link{border:1px solid var(--line);background:var(--card);display:grid}.block-link.complete{box-shadow:inset 0 3px var(--jade)}.block-start{min-height:96px;color:var(--ink);text-align:left;cursor:pointer;background:0 0;border:0;gap:6px;padding:14px;display:grid}.block-start:hover{background:var(--paper-deep)}.block-start span,.block-start small{color:var(--muted);font-size:12px}.block-start strong{font:700 16px var(--sans)}.block-link .text-button{justify-self:start;margin:0 14px 10px}button,input,select{font:inherit}.primary,.secondary,.audio-button,.rating-row button,.tone-answers button,.filter-row button,.choice-grid button,.pattern-option{cursor:pointer;border-radius:4px;min-height:44px;padding:10px 15px;font-weight:800}.primary{color:#fffaf0;background:var(--red);border:1px solid var(--red);justify-content:center;align-items:center;gap:8px;display:inline-flex}.primary:hover{background:var(--red-dark)}.secondary{color:var(--ink);border:1px solid var(--ink);background:0 0;align-items:center;gap:8px;display:inline-flex}.audio-button{color:var(--ink);background:var(--jade-wash);border:1px solid color-mix(in srgb, var(--jade) 50%, transparent);align-items:center;gap:7px;display:inline-flex}.big-play{justify-self:start;min-height:52px;font-size:18px}.text-button{min-height:44px;color:var(--red);cursor:pointer;background:0 0;border:0;padding:0;font-weight:800;text-decoration:underline}.back{min-height:44px;color:var(--muted);cursor:pointer;background:0 0;border:0;align-items:center;gap:2px;padding:0;font-weight:700;display:inline-flex}.inline-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}button:disabled{cursor:default}.runner-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.block-timer{color:var(--muted);align-items:center;gap:8px;font-size:14px;font-weight:700;display:inline-flex}.progress-ring{aspect-ratio:1;background:radial-gradient(var(--paper) 55%, transparent 56%), conic-gradient(var(--jade) var(--progress), var(--paper-deep) 0);border-radius:50%;width:40px;display:inline-block}.expired-note{margin-top:8px;font-weight:700;color:var(--ink)!important}.runner-page .page-heading{margin:18px 0}.drill-card{border:1px solid var(--line);border-top:4px solid var(--red);background:var(--card);box-sizing:border-box;gap:16px;max-width:680px;padding:clamp(20px,5vw,44px);display:grid}.drill-card h2{margin:0;font-size:clamp(24px,5vw,40px);line-height:1.15}.drill-card h3{margin:8px 0 0}.drill-card>.phrase-detail{background:0 0;border:0;padding:0}.card-top{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.card-top .eyebrow{margin:0}.score{margin:0;font-size:13px;font-weight:800}.instruction{font-weight:600;color:var(--ink)!important}.steps{color:var(--ink);gap:8px;margin:0;padding-left:20px;line-height:1.5;display:grid}.trial-progress{background:var(--paper-deep);border-radius:3px;height:6px;overflow:hidden}.trial-progress span{background:var(--jade);height:100%;transition:width .3s;display:block}.pinyin{font-family:var(--pinyin);font-size:1.1em;line-height:1.4;color:var(--ink)!important}.pinyin.big{margin:0;font-size:clamp(26px,6vw,38px);font-weight:600}.english{margin:0;font-size:1.15em;font-weight:800;color:var(--ink)!important}.tones{gap:6px;display:grid}.tone-row{flex-wrap:wrap;align-items:end;gap:4px;display:flex}.tone{color:var(--tone-color,var(--ink));justify-items:center;display:inline-grid}.tone-1{--tone-color:var(--tone-1)}.tone-2{--tone-color:var(--tone-2)}.tone-3{--tone-color:var(--tone-3)}.tone-4{--tone-color:var(--tone-4)}.tone-neutral{--tone-color:var(--tone-0)}.tones-plain,.tones-plain .tone{--tone-color:var(--ink)}.tone-syllable{color:var(--ink);font-family:var(--pinyin);font-size:15px}.contour-glyph{display:block;overflow:visible}.contour-guide{stroke:var(--line);stroke-width:1px;stroke-dasharray:2 3}.tone-note{color:var(--muted);margin:0;font-size:13px}.tone-guide{flex-wrap:wrap;gap:10px;display:flex}.tone-guide .tone{border:1px solid var(--line);text-align:left;grid-template-columns:auto 1fr;align-items:center;gap:6px;min-width:150px;padding:6px 10px;display:grid}.tone-guide span{color:var(--ink);font:13px var(--sans)}.tone-intro-grid{grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px;display:grid}.tone-intro{border:1px solid var(--line);border-top:4px solid var(--tone-color,var(--ink));background:var(--paper);gap:6px;padding:12px;display:grid}.tone-intro-play{min-height:44px;color:var(--ink);background:var(--card);border:1px solid var(--line-strong);cursor:pointer;border-radius:4px;justify-content:space-between;align-items:center;padding:4px 8px;display:flex}.tone-intro dl{grid-template-columns:auto 1fr;gap:2px 8px;margin:0;font-size:14px;display:grid}.tone-intro dt{color:var(--muted);font-weight:700}.tone-intro dd{color:var(--ink);margin:0}.tone-gesture{color:var(--tone-color,var(--ink))}.gesture-trail{stroke:color-mix(in srgb, var(--tone-color,var(--ink)) 35%, transparent)}.tone-gesture svg{color:var(--ink)}.gesture-pair{flex-wrap:wrap;gap:12px;display:flex}.compare-row{flex-wrap:wrap;gap:24px;display:flex}.compare-row figure{max-width:220px;color:var(--tone-color,var(--ink));text-align:center;justify-items:center;gap:6px;margin:0;display:grid}.compare-row figcaption{color:var(--ink);font-size:14px}.model-tone{text-align:center;justify-items:center;gap:4px;display:grid}.model-tone .contour-glyph,.tone-intro .contour-glyph{color:var(--tone-color,var(--ink))}.model-tone p{margin:0}.tone-answers{grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:8px;display:grid}.tone-answers .tone-choice{color:var(--tone-color,var(--ink));background:var(--paper);border:2px solid var(--line-strong);justify-items:center;gap:2px;padding:8px 6px;display:grid}.tone-choice span{color:var(--ink);font-size:15px}.tone-choice small{color:var(--muted);font-size:12px;font-weight:600}.tone-choice:not(:disabled):hover,.pattern-option:hover,.choice-grid button:not(:disabled):hover{border-color:var(--ink)}.right{background:var(--jade-wash)!important;border-color:var(--jade)!important}.wrong{background:var(--red-wash)!important;border-color:var(--red)!important}.dim{opacity:.55}.feedback{border-left:4px solid;grid-template-columns:auto 1fr;gap:10px;padding:12px 14px;display:grid}.feedback p{margin:0 0 4px;color:var(--ink)!important}.feedback.is-right{border-color:var(--jade);background:var(--jade-wash);color:var(--jade-dark)}.feedback.is-wrong{border-color:var(--red);background:var(--red-wash);color:var(--red)}.pattern-options{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px;display:grid}.pattern-option{color:var(--ink);background:var(--paper);border:2px solid var(--line-strong);justify-items:center;gap:4px;display:grid}.pattern-option span:last-child{font-size:13px}.pattern-glyphs{gap:2px;display:flex}.trap-compare{flex-wrap:wrap;gap:16px;display:flex}.trap-compare>div{gap:6px;display:grid}.example-list{gap:12px;display:grid}.drill-entry-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;display:grid}.drill-entry{border:1px solid var(--line);background:var(--card);align-content:start;gap:6px;padding:10px;display:grid}.example{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.choice-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px;display:grid}.choice-grid.two{grid-template-columns:1fr 1fr}.choice-grid button{color:var(--ink);background:var(--paper);border:2px solid var(--line-strong);text-align:left}.rating-row,.toggle-row,.filter-row{flex-wrap:wrap;gap:8px;display:flex}.rating-row button{min-width:90px;color:var(--ink);background:var(--paper);border:1px solid var(--line-strong);display:grid}.rating-row small{color:var(--muted);font-size:12px;font-weight:600}.filter-row button{color:var(--ink);background:var(--paper);border:1px solid var(--line-strong);text-transform:capitalize}.filter-row button[aria-pressed=true]{background:var(--ink);color:var(--paper)}.toggle-row label{min-height:44px;color:var(--ink);align-items:center;gap:6px;font-weight:700;display:inline-flex}.answer{background:var(--paper);border:1px solid var(--line);gap:10px;padding:14px;display:grid}.note,.hint{color:var(--muted);font-size:14px}.phrase-detail{border:1px solid var(--line);background:var(--card);gap:12px;padding:18px;display:grid}.phrase-detail.compact{padding:12px 14px}.phrase-top{justify-content:space-between;align-items:start;gap:14px;display:flex}.phrase-meta{color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;display:flex}.chip{color:var(--jade-dark);border:1px solid var(--jade);text-transform:uppercase;border-radius:3px;padding:2px 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p{margin:0;color:var(--ink)!important}.speech-gate.retry{border-left-color:var(--red);background:var(--red-wash)}.speech-gate.quiet{border-left-color:var(--line-strong);background:var(--paper-deep)}.gate-status{align-items:center;gap:8px;font-weight:700;display:flex}.listening-dot{background:var(--red);border-radius:50%;width:12px;height:12px;animation:1.2s ease-in-out infinite pulse}@keyframes pulse{50%{opacity:.3;transform:scale(.8)}}.timer-bar{background:var(--paper-deep);border-radius:5px;height:10px;overflow:hidden}.timer-bar span{background:var(--jade);transform-origin:0;height:100%;animation-name:drain;animation-timing-function:linear;animation-fill-mode:forwards;display:block}@keyframes drain{0%{transform:scaleX(1)}to{transform:scaleX(0)}}.screen-card p{line-height:1.55}.dont-list{color:var(--ink);gap:10px;margin:0;padding-left:20px;line-height:1.5;display:grid}.instead{color:var(--jade-dark);font-weight:700}.rule{font-size:18px;color:var(--ink)!important}.cheat-example{background:var(--paper);border:1px solid var(--line);gap:10px;padding:14px;display:grid}.tick-list{gap:4px;display:grid}.tick-list label{border-bottom:1px solid var(--line);min-height:44px;color:var(--ink);align-items:center;gap:10px;padding:4px 0;display:flex}.tick-list input,.mission-list input{width:22px;height:22px;accent-color:var(--jade)}.script-so-far{color:var(--muted);gap:4px;margin:0;padding:0;font-size:14px;list-style:none;display:grid}.script-so-far span{font-weight:800}.turn{gap:6px;display:grid}.turn 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.choice-grid{width:100%}.sign-mark{color:var(--red);font-family:serif;font-size:78px;line-height:1}.sign-mark.small{font-size:24px}.mnemonic{font-style:italic;color:var(--ink)!important}.model-lines{gap:10px;margin:0;padding-left:20px;display:grid}.model-lines p{margin:0}.done-summary{gap:12px;max-width:680px;margin-bottom:24px;display:grid}.done-summary>p{font-size:18px;color:var(--ink)!important}.tone-results{border:1px solid var(--line);background:var(--card);gap:10px;padding:16px;display:grid}.tone-results h2{margin:0;font-size:24px}.tone-bars{gap:6px;margin:0;display:grid}.tone-bars div{grid-template-columns:110px 1fr;align-items:center;gap:10px;display:grid}.tone-bars dt{color:var(--ink);text-transform:capitalize;font-weight:700}.tone-bars dd{color:var(--muted);align-items:center;gap:8px;margin:0;font-size:14px;display:flex}.bar{background:var(--paper-deep);border-radius:5px;flex:1;height:10px;overflow:hidden}.bar 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12px}.notes-block{margin-bottom:12px}.note-link{width:100%;min-height:50px;color:var(--ink);border:0;border-bottom:1px solid var(--line);text-align:left;cursor:pointer;background:0 0;padding:12px 0;font-weight:800;display:block}.sign-grid{grid-template-columns:repeat(auto-fit,minmax(205px,1fr));gap:12px;display:grid}.sign-grid article{border:1px solid var(--line);background:var(--card);gap:6px;padding:20px;display:grid}.sign-grid h2,.sign-grid p{margin:0}.mission-list{border-top:1px solid var(--line);gap:1px;display:grid}.mission-list label{border-bottom:1px solid var(--line);min-height:44px;color:var(--ink);align-items:start;gap:12px;padding:16px 0;display:flex}.settings-form{gap:17px;max-width:560px;display:grid}.settings-form label{color:var(--ink);gap:6px;font-weight:800;display:grid}.settings-form label.check{align-items:start;gap:10px;font-weight:600;display:flex}.settings-form input:not([type=checkbox]),.settings-form select{min-height:44px;color:var(--ink);border:1px solid var(--line-strong);background:var(--card);border-radius:4px;padding:7px 10px}.settings-form input[type=checkbox]{width:22px;height:22px;accent-color:var(--jade);flex:none;margin-top:2px}.pocket-page{max-width:680px}.pocket-sheet{border:1px solid var(--line);grid-template-columns:repeat(2,minmax(0,1fr));margin-top:22px;display:grid}.pocket-sheet article{border:1px solid var(--line);padding:13px}.pocket-sheet h2{color:var(--red);font:800 12px var(--sans);letter-spacing:.08em;margin:0 0 8px}.pocket-entry{min-height:36px;color:var(--ink);font-family:var(--pinyin);overflow-wrap:anywhere;justify-content:space-between;align-items:center;gap:8px;font-size:14px;display:flex}.pocket-entry .audio-button{flex:none;justify-content:center;min-width:36px;min-height:36px;padding:4px}footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:12px;padding:20px 24px;font-size:13px;display:flex}footer a{color:var(--red);font-weight:800}@media (width<=720px){.app-header{min-height:60px;padding:0 16px}.menu-button{display:inline-flex}.app-header nav{border-bottom:1px solid var(--line);background:var(--paper);flex-direction:column;align-items:stretch;padding:8px 16px 16px;display:none;position:absolute;top:60px;left:0;right:0}.app-header nav.open{display:flex}.app-header nav button{justify-content:start}.page{padding:24px 16px 52px}.home-intro{padding-top:16px}.session-band{grid-template-columns:1fr auto}.pocket-sheet{grid-template-columns:1fr}.drill-card{padding:18px}.sign-grid{grid-template-columns:1fr 1fr}.tone-answers{grid-template-columns:repeat(3,1fr)}.choice-grid{grid-template-columns:1fr}footer{padding:18px 16px}}@media (width<=390px){.page{padding-inline:12px}.sign-grid{grid-template-columns:1fr}.pocket-sheet article{padding:10px}.pocket-entry{font-size:13px}.tone-bars div{grid-template-columns:90px 1fr}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}.timer-bar span{animation:none;transform:scaleX(.5)}.listening-dot{animation:none}}