:root{color:#17211d;background:#f6f8f5;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;--ink: #17211d;--muted: #64716b;--line: #d9dfdb;--paper: #ffffff;--wash: #eef3ef;--teal: #087f6a;--teal-dark: #075f51;--teal-soft: #dcefe9;--coral: #d45242;--coral-soft: #fae8e5;--gold: #a36b08;--gold-soft: #f8eed7;--focus: #1267b1}*{box-sizing:border-box}html{min-width:320px;background:#f6f8f5;scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}body{margin:0;min-width:320px;min-height:100vh;min-height:100svh}button,input{font:inherit;letter-spacing:0}button{color:inherit}button:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid rgba(18,103,177,.35);outline-offset:2px}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;min-height:100svh;padding-bottom:0}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;height:68px;padding:0 max(24px,calc((100vw - 1120px)/2));border-bottom:1px solid var(--line);background:#f6f8f5}.brand,.setup-brand{display:inline-flex;align-items:center;gap:10px;font-weight:750}.brand-mark{display:inline-grid;width:36px;height:36px;place-items:center;border:2px solid var(--ink);border-radius:6px;background:var(--gold-soft);color:var(--ink);font-family:Georgia,serif;font-size:22px;line-height:1}.desktop-nav{display:flex;align-items:center;gap:4px}.learner-label{display:inline-flex;align-items:center;gap:6px;max-width:180px;margin-right:6px;overflow:hidden;color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;text-overflow:ellipsis;white-space:nowrap}.desktop-nav a{display:inline-flex;align-items:center;gap:7px;min-height:40px;padding:0 13px;border-radius:6px;color:var(--muted);font-size:14px;font-weight:650}.desktop-nav a:hover,.desktop-nav a.active{background:var(--paper);color:var(--ink)}.mobile-nav{display:none}.page{width:min(100% - 40px,1120px);margin:0 auto;padding:52px 0 72px}.eyebrow,.stage-label{margin:0 0 8px;color:var(--teal-dark);font-size:12px;font-weight:800;letter-spacing:0;text-transform:uppercase}h1,h2,p{overflow-wrap:anywhere}h1{margin:0;font-family:Georgia,Times New Roman,serif;font-size:42px;font-weight:600;line-height:1.08}.page-heading{margin-bottom:28px}.page-heading h1{font-size:34px}.primary-command,.secondary-command,.miss-command,.text-command,.danger-command,.icon-button{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;border-radius:6px;cursor:pointer;font-weight:750}.primary-command{min-height:48px;padding:0 20px;background:var(--teal);color:#fff}.primary-command:hover{background:var(--teal-dark)}.primary-command:disabled,.secondary-command:disabled,.miss-command:disabled,.rating-grid button:disabled{cursor:wait;opacity:.58}.secondary-command,.miss-command{min-height:46px;padding:0 16px;border:1px solid var(--line);background:var(--paper)}.secondary-command:hover,.miss-command:hover{border-color:#aab5af;background:var(--wash)}.secondary-command:disabled{cursor:default;opacity:.45}.danger-command{min-height:46px;padding:0 16px;border:1px solid var(--coral);background:var(--coral-soft);color:#9e3025}.danger-command:hover{background:#f6d8d3}.danger-command:disabled{cursor:wait;opacity:.58}.miss-command.selected{border-color:var(--coral);background:var(--coral-soft);color:#9e3025}.text-command{min-height:40px;padding:0 8px;background:transparent;color:var(--muted)}.icon-button{width:40px;height:40px;border:1px solid var(--line);background:var(--paper)}.practice-band{display:flex;min-height:244px;align-items:flex-end;justify-content:space-between;gap:36px;padding:42px;border:1px solid #cfd8d2;border-left:7px solid var(--teal);border-radius:8px;background:var(--paper)}.practice-band h1{max-width:720px;margin-bottom:14px}.practice-band p:last-child{margin:0;color:var(--muted);font-size:16px}.practice-band .primary-command{flex:0 0 auto}.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:24px;border:1px solid var(--line);border-radius:8px;background:var(--paper);overflow:hidden}.metric-grid article{position:relative;display:grid;min-width:0;min-height:132px;align-content:center;gap:4px;padding:22px 24px 20px 58px;border-right:1px solid var(--line)}.metric-grid article:last-child{border-right:0}.metric-grid svg,.metric-glyph{position:absolute;top:29px;left:22px;width:24px;color:var(--teal)}.metric-glyph{font-size:11px;font-weight:850;text-transform:uppercase}.metric-grid strong{font-size:30px;line-height:1}.metric-grid span:last-child{color:var(--muted);font-size:13px}.session-page{min-height:calc(100vh - 68px);min-height:calc(100svh - 68px);padding:30px 20px 56px}.lesson-stage{width:min(100%,900px);min-height:calc(100vh - 154px);min-height:calc(100svh - 154px);margin:0 auto;padding:32px 38px;border:1px solid var(--line);border-radius:8px;background:var(--paper)}.stage-header{display:flex;min-height:44px;align-items:flex-start;justify-content:space-between;gap:20px;color:var(--muted)}.stage-header>div{display:grid}.stage-header strong{color:var(--ink);font-size:18px}.stage-header>span{flex:0 0 auto;font-variant-numeric:tabular-nums}.progress-line{height:4px;margin:18px 0 8px;border-radius:2px;background:var(--wash);overflow:hidden}.progress-line i{display:block;height:100%;background:var(--teal)}.practice-word{display:flex;min-height:180px;align-items:center;justify-content:center;padding:24px 12px;color:var(--ink);font-family:Georgia,Times New Roman,serif;font-size:76px;font-weight:600;line-height:1;text-align:center;text-transform:lowercase}.touch-blend{width:min(100%,620px);margin:0 auto}.touch-heading{display:flex;min-height:46px;align-items:center;justify-content:space-between;gap:16px}.touch-pronunciation{color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:16px}.blend-track{display:grid;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;min-height:110px;border:2px solid var(--ink);border-radius:8px;background:var(--paper);touch-action:none;user-select:none;overflow:hidden}.blend-track:not(.audio-ready){border-color:#9ba59f}.blend-segment{position:relative;display:grid;min-width:0;place-items:center;align-content:center;gap:8px;border-right:1px solid var(--line);transform-origin:center}.blend-segment:last-child{border-right:0}.blend-segment .blend-grapheme{max-width:100%;font-family:Georgia,Times New Roman,serif;font-size:39px;font-weight:650;line-height:1;overflow-wrap:anywhere;transform-origin:center}.blend-phone{color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;font-weight:650;line-height:1}.blend-segment svg{color:var(--muted)}.blend-segment.active{background:var(--gold-soft);color:#4f3607}.blend-segment.active .blend-phone{color:#6d4d0b}.blend-segment[data-motion-state=holding]{animation:phoneme-hold-box .72s ease-in-out infinite alternate;will-change:transform}.blend-segment[data-motion-state=holding] .blend-grapheme{animation:phoneme-hold-letter .72s ease-in-out infinite alternate;will-change:transform}.blend-segment[data-motion-state=stop-hold]{animation:phoneme-stop-box .18s ease-out both;will-change:transform}.blend-segment[data-motion-state=stop-hold] .blend-grapheme{animation:phoneme-stop-letter .18s ease-out both;will-change:transform}.blend-segment[data-motion-state=transition-source]{background:var(--teal-soft);animation:phoneme-transition-source-box var(--blend-transition-duration, .12s) linear both;will-change:opacity,transform}.blend-segment[data-motion-state=transition-source] .blend-grapheme{animation:phoneme-transition-source-letter var(--blend-transition-duration, .12s) linear both;will-change:opacity,transform}.blend-segment[data-motion-state=transition-target]{background:var(--gold-soft);animation:phoneme-transition-target-box var(--blend-transition-duration, .12s) linear both;will-change:opacity,transform}.blend-segment[data-motion-state=transition-target] .blend-grapheme{animation:phoneme-transition-target-letter var(--blend-transition-duration, .12s) linear both;will-change:opacity,transform}@keyframes phoneme-hold-box{0%{transform:scale(1)}to{transform:scale(1.02)}}@keyframes phoneme-hold-letter{0%{transform:scaleX(1)}to{transform:scaleX(1.04)}}@keyframes phoneme-stop-box{0%{transform:scale(.94,1.05)}55%{transform:scale(1.025,.98)}to{transform:scale(1)}}@keyframes phoneme-stop-letter{0%{transform:scale(.9)}55%{transform:scale(1.04)}to{transform:scale(1)}}@keyframes phoneme-transition-source-box{0%{opacity:1;transform:translate(0) scaleX(1)}to{opacity:.82;transform:translate(2.5%) scaleX(.98)}}@keyframes phoneme-transition-source-letter{0%{transform:translate(0) scaleX(1.04)}to{transform:translate(6%) scaleX(.98)}}@keyframes phoneme-transition-target-box{0%{opacity:.82;transform:translate(-2.5%) scaleX(.98)}to{opacity:1;transform:translate(0) scaleX(1)}}@keyframes phoneme-transition-target-letter{0%{transform:translate(-6%) scaleX(.98)}to{transform:translate(0) scaleX(1)}}.inline-error{display:block;margin-top:10px;color:var(--coral);font-size:13px;font-weight:650}.audio-control{display:flex;min-height:48px;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 14px;margin-top:10px}.audio-control-status{min-width:0;color:var(--muted);font-size:13px;font-weight:650;overflow-wrap:anywhere}.audio-control[data-state=failed] .audio-control-status,.audio-control[data-state=load-failed] .audio-control-status{display:-webkit-box;overflow:hidden;color:var(--coral);-webkit-box-orient:vertical;-webkit-line-clamp:2}.audio-control[data-state=failed] .audio-control-status{flex-basis:100%}.audio-control-action{flex:0 0 auto;min-height:40px;max-width:100%;margin-left:auto;padding:0 12px;color:var(--ink)}.session-error{width:min(100%,900px);margin:10px auto 0}.historical-actions{grid-template-columns:1fr}.historical-actions>button{justify-self:center}.historical-rating p{color:var(--muted)}.touch-loading{display:grid;min-height:110px;place-items:center;color:var(--muted)}.spin{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.stage-next{display:flex;margin:30px auto 0}.chain-ribbon{display:flex;gap:8px;margin:20px -4px 0;padding:4px;overflow-x:auto}.chain-ribbon button{flex:0 0 auto;min-width:72px;min-height:42px;padding:0 12px;border:1px solid var(--line);border-radius:5px;background:var(--paper);cursor:pointer;font-weight:700}.chain-ribbon button.current{border-color:var(--teal);background:var(--teal-soft);color:var(--teal-dark)}.chain-ribbon button.missed{border-color:var(--coral);box-shadow:inset 0 -3px 0 var(--coral)}.chain-stage .practice-word{min-height:160px}.chain-actions{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;margin-top:32px}.chain-actions>:last-child{justify-self:end}.rating-stage{display:grid;align-content:center}.rating-stage h1{margin-bottom:30px;font-size:38px}.rating-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.rating-grid button{display:grid;min-height:116px;gap:8px;padding:20px;border:1px solid var(--line);border-radius:7px;background:var(--paper);cursor:pointer;text-align:left}.rating-grid button:hover{border-color:var(--teal);background:var(--teal-soft)}.rating-grid strong{display:flex;align-items:center;gap:12px;font-size:18px}.rating-grid kbd{display:grid;width:29px;height:29px;place-items:center;border:1px solid #b5beba;border-radius:4px;background:var(--wash);font-family:inherit}.rating-grid span{color:var(--muted);font-size:14px}.rating-stage .text-command{justify-self:start;margin-top:18px}.centered-state,.fatal-state,.splash{display:flex;min-height:calc(100vh - 68px);min-height:calc(100svh - 68px);align-items:center;justify-content:center}.centered-state,.fatal-state{flex-direction:column;gap:14px;text-align:center}.centered-state h1,.fatal-state h1{font-size:34px}.centered-state p,.fatal-state p{max-width:560px;margin:0;color:var(--muted)}.fatal-state{padding:24px}.splash .brand-mark{width:58px;height:58px;font-size:36px}.loader{width:22px;height:22px;border:3px solid var(--line);border-top-color:var(--teal);border-radius:50%;animation:spin .8s linear infinite}.dashboard-page{max-width:1040px}.dashboard-metrics{margin-top:0}.history-list{display:grid;gap:18px;margin-top:28px}.history-list>article{border-top:1px solid var(--line)}.history-list>article>header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 2px}.history-list header span{color:var(--muted);font-size:13px}.review-rows{border:1px solid var(--line);border-radius:7px;background:var(--paper);overflow:hidden}.review-rows>div{display:grid;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:14px;min-height:58px;padding:10px 14px;border-bottom:1px solid var(--line)}.review-rows>div:last-child{border-bottom:0}.review-rows>div>span:nth-child(2){min-width:0;overflow-wrap:anywhere}.review-rows small{color:var(--muted);text-align:right}.rating-dot{display:grid;width:30px;height:30px;place-items:center;border-radius:50%;background:var(--wash);font-weight:800}.rating-1{background:var(--coral-soft);color:#9e3025}.rating-2{background:var(--gold-soft);color:#76500a}.rating-3{background:var(--teal-soft);color:var(--teal-dark)}.rating-4{background:#e5ebf7;color:#31578b}.empty-band{padding:32px;border:1px dashed #aeb8b2;border-radius:7px;color:var(--muted);text-align:center}.settings-page{max-width:760px}.curriculum-list{display:grid;gap:10px;margin-bottom:22px}.curriculum-list>button{display:grid;grid-template-columns:32px minmax(0,1fr);min-height:68px;align-items:center;gap:12px;padding:10px 16px;border:1px solid var(--line);border-radius:7px;background:var(--paper);cursor:pointer;text-align:left}.curriculum-list>button.selected{border-color:var(--teal);background:var(--teal-soft)}.curriculum-list strong,.curriculum-list small{display:block}.curriculum-list small{margin-top:3px;color:var(--muted);text-transform:capitalize}.check-box{display:grid;width:25px;height:25px;place-items:center;border:1px solid #9ba69f;border-radius:4px;background:var(--paper);color:var(--teal-dark)}.saved-state{display:inline-flex;align-items:center;gap:6px;margin-left:14px;color:var(--teal-dark);font-weight:700}.storage-band{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:44px;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.storage-band span{color:var(--muted);font-size:14px;text-align:right}.setup-page{display:grid;min-height:100vh;min-height:100svh;place-items:center;padding:32px 20px;grid-template-columns:minmax(180px,300px) minmax(320px,560px);gap:60px}.setup-brand{align-self:start;justify-self:end;margin-top:10px;font-size:20px}.setup-page>section{width:100%;padding:34px;border:1px solid var(--line);border-radius:8px;background:var(--paper)}.setup-page h1{margin-bottom:26px;font-size:34px}.landing{width:100%}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.landing-card{transition:none}}.landing-hero{display:grid;min-height:100vh;min-height:100svh;align-content:center;justify-items:center;gap:28px;padding:88px 20px 48px;text-align:center;background:radial-gradient(1100px 520px at 50% -8%,var(--teal-soft),transparent 60%),#f6f8f5}.landing-hero .setup-brand{align-self:auto;justify-self:center;margin:0;font-size:20px}.landing-hero-copy{max-width:680px}.landing-headline{margin:10px 0 14px;font-size:clamp(34px,6vw,56px);line-height:1.05;letter-spacing:-.02em}.landing-subhead{margin:0 auto;max-width:560px;color:var(--muted);font-size:clamp(16px,2.4vw,19px);line-height:1.55}.landing-hero>form{width:100%;max-width:440px;padding:34px;border:1px solid var(--line);border-radius:12px;background:var(--paper);box-shadow:0 24px 60px -40px #083c3380;text-align:left}.landing-hero h1{margin:0 0 8px;font-size:26px}.landing-hero label{display:grid;gap:8px;margin:24px 0 18px;color:var(--muted);font-size:13px;font-weight:700}.landing-hero input{width:100%;height:48px;padding:0 12px;border:1px solid #9da8a2;border-radius:5px;color:var(--ink);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:17px}.landing-scroll-cue{color:var(--teal-dark);font-weight:600;font-size:15px}.landing-scroll-cue:hover{text-decoration:underline}.landing-section{padding:80px max(24px,calc((100vw - 1080px)/2))}.landing-section-wash{background:var(--wash)}.landing-section-head{max-width:720px;margin:0 auto 44px;text-align:center}.landing-section-head h2{margin:6px 0 0;font-size:clamp(26px,4vw,38px);letter-spacing:-.01em}.landing-lede{margin:16px auto 0;max-width:620px;color:var(--muted);line-height:1.6}.landing-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}.landing-card{padding:28px 24px;border:1px solid var(--line);border-radius:12px;background:var(--paper);transition:transform .15s ease,box-shadow .15s ease}.landing-card:hover{transform:translateY(-3px);box-shadow:0 20px 44px -30px #083c3373}.landing-card-icon{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;margin-bottom:16px;border-radius:12px;color:var(--teal-dark);background:var(--teal-soft)}.landing-card h3{margin:0 0 8px;font-size:19px}.landing-card p{margin:0;color:var(--muted);line-height:1.55}.landing-why{max-width:640px;margin:0 auto;text-align:center}.landing-why p{color:var(--muted);line-height:1.65;text-align:left}.landing-stat{margin:8px 0 6px;color:var(--coral);font-size:clamp(48px,9vw,78px);font-weight:800;letter-spacing:-.03em;line-height:1;text-align:center}.landing-stat-caption{margin:0 auto 28px;max-width:520px;color:var(--ink);font-size:18px;line-height:1.5;text-align:center}.landing-cta{max-width:560px;margin:0 auto;text-align:center}.landing-cta h2{margin:0 0 10px;font-size:clamp(26px,4vw,38px)}.landing-cta p{margin:0 0 24px;color:var(--muted);font-size:18px}.landing-cta-button{display:inline-flex}.landing-footer{padding:40px 24px 56px;border-top:1px solid var(--line);text-align:center;color:var(--muted)}.landing-footer p{margin:0 auto;max-width:640px;line-height:1.55}.landing-footer-fine{margin-top:10px;font-size:13px}.research-landing{background:#f7f6f1}.research-landing .landing-hero{display:block;min-height:100vh;min-height:100svh;padding:32px 24px 44px;text-align:left;background:linear-gradient(rgba(23,33,29,.025) 1px,transparent 1px),#f7f6f1;background-size:100% 32px}.landing-hero-shell{width:min(1120px,100%);margin:0 auto}.landing-masthead{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:18px;border-bottom:1px solid var(--ink)}.research-landing .landing-masthead .setup-brand{align-self:auto;justify-self:auto;margin:0}.landing-masthead>span{color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;letter-spacing:.08em;text-transform:uppercase}.landing-hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(340px,440px);grid-template-areas:"copy form" "sub form";align-items:center;column-gap:clamp(48px,7vw,92px);row-gap:0;min-height:calc(100vh - 150px);min-height:calc(100svh - 150px);padding:58px 0 34px}.research-landing .landing-hero-copy{grid-area:copy;align-self:end;max-width:650px}.research-landing .landing-hero-grid>.landing-subhead{grid-area:sub;align-self:start}.research-landing .landing-hero-grid>form{grid-area:form;scroll-margin-top:16px}.research-landing .landing-headline,.landing-paper-heading h2,.landing-closing h2{font-family:Georgia,Times New Roman,serif;font-weight:500;letter-spacing:-.025em}.research-landing .landing-headline{margin:14px 0 22px;max-width:640px;font-size:clamp(38px,5.2vw,60px);line-height:1.04}.research-landing .landing-subhead{max-width:620px;margin:0;color:#3f4a45;font-size:18px;line-height:1.7}.landing-citations{margin-left:3px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;font-weight:600;line-height:0}.landing-citations a{color:var(--teal-dark);text-decoration:underline;text-underline-offset:2px}.landing-claim-note{max-width:590px;margin-top:30px;padding:16px 18px;border-left:3px solid var(--teal);background:#ffffff9e}.landing-claim-note strong,.landing-method-row aside strong,.landing-rationale-notes strong{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;letter-spacing:.07em;text-transform:uppercase}.landing-claim-note p{margin:5px 0 0;color:var(--muted);font-size:14px;line-height:1.55}.research-landing .landing-hero form{width:100%;max-width:none;padding:30px;border:1px solid #aeb7b2;border-radius:2px;background:#ffffffeb;box-shadow:8px 8px #e3e6df;text-align:left}.research-landing .landing-hero h1{margin:0 0 18px;font-family:Georgia,Times New Roman,serif;font-size:28px;font-weight:500}.research-landing .landing-hero label{display:grid;gap:8px;margin:24px 0 18px;color:var(--muted);font-size:13px;font-weight:700}.research-landing .landing-hero input{width:100%;height:48px;padding:0 12px;border:1px solid #8d9892;border-radius:2px;color:var(--ink);background:var(--paper);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:16px}.research-landing .landing-scroll-cue{display:block;width:fit-content;margin:0 auto;color:var(--teal-dark);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;letter-spacing:.04em}.research-landing .landing-section{padding:88px max(24px,calc((100vw - 1120px)/2))}.research-landing .landing-section-wash{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#eef1eb}.landing-paper-heading{display:grid;grid-template-columns:170px minmax(0,720px);gap:28px;margin-bottom:46px;padding-bottom:24px;border-bottom:1px solid var(--ink)}.landing-section-number{margin:5px 0 0;color:var(--teal-dark);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.landing-paper-heading h2{margin:0;font-size:clamp(28px,3.7vw,42px);line-height:1.12}.landing-paper-heading p:not(.landing-section-number){max-width:680px;margin:14px 0 0;color:var(--muted);line-height:1.65}.landing-method-list{border-top:1px solid var(--line)}.landing-method-row{display:grid;grid-template-columns:54px minmax(0,1fr) minmax(280px,.78fr);gap:28px;padding:30px 0;border-bottom:1px solid var(--line)}.landing-method-number{color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.landing-method-copy h3,.landing-observation-grid h3{margin:0 0 10px;font-family:Georgia,Times New Roman,serif;font-size:22px;font-weight:500}.landing-method-copy p,.landing-method-row aside p,.landing-observation-grid p,.landing-rationale-notes p{margin:0;color:var(--muted);line-height:1.62}.landing-method-row aside{padding-left:22px;border-left:1px solid var(--line)}.landing-method-row aside p{margin-top:8px;font-size:14px}.landing-supporting-methods{display:grid;grid-template-columns:170px minmax(0,1fr);gap:28px;margin-top:48px}.landing-supporting-methods>div{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid var(--line)}.landing-supporting-methods article{padding:24px 26px 0 0}.landing-supporting-methods article+article{padding-left:26px;border-left:1px solid var(--line)}.landing-supporting-methods article>span{color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px}.landing-supporting-methods h3{margin:12px 0 8px;font-family:Georgia,Times New Roman,serif;font-size:19px;font-weight:500}.landing-supporting-methods article p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}.landing-fsrs-flow{display:grid;grid-template-columns:repeat(4,1fr);margin:0;padding:0;list-style:none;border-top:1px solid var(--ink);border-left:1px solid var(--ink);counter-reset:fsrs-step}.landing-fsrs-flow>li{min-height:230px;padding:26px 24px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);background:#ffffff75}.landing-fsrs-step-number{display:block;margin-bottom:20px;color:var(--teal-dark);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;font-weight:700;letter-spacing:.08em}.landing-fsrs-flow h3{margin:0 0 10px;font-family:Georgia,Times New Roman,serif;font-size:19px;font-weight:500;line-height:1.2}.landing-fsrs-flow p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}.landing-fsrs-grades{display:grid;grid-template-columns:170px minmax(0,1fr);gap:28px;margin-top:46px}.landing-fsrs-grades>div{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.landing-fsrs-grades article{padding:20px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.landing-fsrs-grades p{margin:10px 0 0;color:var(--muted);font-size:14px;line-height:1.6}.landing-grade{display:inline-block;padding:3px 12px;border-radius:999px;font-size:13px;font-weight:700;letter-spacing:.02em}.landing-grade-again{background:var(--coral-soft);color:#9e3025}.landing-grade-hard{background:var(--gold-soft);color:var(--gold)}.landing-grade-good{background:var(--teal-soft);color:var(--teal-dark)}.landing-grade-easy{background:#e5ebf7;color:#31578b}.landing-fsrs-caveat{max-width:920px;margin:28px 0 0;color:var(--muted);font-size:14px;line-height:1.65}.landing-technical-note{max-width:920px;margin:24px 0 0;padding:0 0 0 18px;border-left:3px solid var(--teal)}.landing-technical-note summary{color:var(--teal-dark);font-family:ui-sans-serif,system-ui,sans-serif;font-size:13px;font-weight:700;cursor:pointer}.landing-technical-note p{margin:12px 0 0;color:var(--muted);font-size:14px;line-height:1.65}.landing-technical-note code{padding:1px 5px;border-radius:4px;background:#087f6a1a;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.landing-observation-grid{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.landing-observation-grid article{min-height:210px;padding:28px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);background:#ffffff75}.landing-observation-grid article>span{display:block;margin-bottom:28px;color:var(--teal-dark);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.landing-rationale-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.landing-rationale-notes article{padding:26px 28px;border-right:1px solid var(--line)}.landing-rationale-notes article:first-child{padding-left:0}.landing-rationale-notes article:last-child{padding-right:0;border-right:0}.landing-rationale-notes p{margin-top:10px;font-size:14px}.landing-references ol{max-width:920px;margin:0;padding-left:28px}.landing-references li{padding:9px 0 9px 8px;color:#49544f;font-family:Georgia,Times New Roman,serif;font-size:14px;line-height:1.55}.landing-references li::marker{color:var(--teal-dark);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px}.landing-references li a,.landing-background-reading a{color:var(--teal-dark);font-family:ui-sans-serif,system-ui,sans-serif;font-size:12px;font-weight:650;text-decoration:underline;text-underline-offset:2px}.landing-background-reading{max-width:920px;margin:28px 0 0;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;line-height:1.55}.landing-closing{display:flex;align-items:end;justify-content:space-between;gap:48px}.landing-closing>div{max-width:720px}.landing-closing h2{margin:10px 0 12px;font-size:clamp(30px,4vw,44px)}.landing-closing p:not(.landing-section-number){margin:0;color:var(--muted);line-height:1.6}.research-landing .landing-footer{padding:28px 24px 40px;border-top:1px solid var(--ink);background:#f7f6f1;color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;text-align:center}@media(max-width:860px){.landing-hero-grid{grid-template-columns:1fr;grid-template-areas:"copy" "form" "sub";row-gap:28px;min-height:auto;padding-top:48px}.research-landing .landing-headline{margin-bottom:0}.research-landing .landing-hero form{max-width:520px}.landing-method-row{grid-template-columns:42px minmax(0,1fr)}.landing-method-row aside{grid-column:2;padding:16px 0 0;border-top:1px solid var(--line);border-left:0}.landing-supporting-methods{grid-template-columns:1fr;gap:14px}.landing-fsrs-flow{grid-template-columns:repeat(2,1fr)}.landing-fsrs-grades{grid-template-columns:1fr;gap:14px}.landing-rationale-notes{grid-template-columns:1fr}.landing-rationale-notes article,.landing-rationale-notes article:first-child,.landing-rationale-notes article:last-child{padding:22px 0;border-right:0;border-bottom:1px solid var(--line)}.landing-rationale-notes article:last-child{border-bottom:0}}@media(max-width:640px){.research-landing .landing-hero{padding:14px max(16px,env(safe-area-inset-right)) 28px max(16px,env(safe-area-inset-left))}.landing-masthead{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:14px;padding-bottom:12px}.landing-masthead>span{line-height:1.4;text-align:right}.landing-hero-grid{row-gap:22px;padding:18px 0 16px}.landing-claim-note{display:none}.research-landing .landing-headline{margin-top:10px;font-size:clamp(30px,9vw,40px)}.research-landing .landing-subhead{font-size:16px}.research-landing .landing-hero form{padding:20px 18px;box-shadow:5px 5px #e3e6df}.research-landing .landing-hero h1{margin-bottom:12px;font-size:25px}.research-landing .landing-hero label{margin:16px 0 12px}.research-landing .landing-section{padding:40px max(18px,env(safe-area-inset-right)) 40px max(18px,env(safe-area-inset-left))}.landing-paper-heading{grid-template-columns:1fr;gap:10px;margin-bottom:24px;padding-bottom:16px}.landing-method-row{grid-template-columns:minmax(0,1fr);gap:10px;padding:22px 0}.landing-method-row aside{grid-column:1}.landing-fsrs-flow>li{padding:20px 18px}.landing-fsrs-step-number{margin-bottom:12px}.landing-observation-grid article{padding:20px}.landing-observation-grid article>span{margin-bottom:12px}.landing-observation-grid,.landing-fsrs-flow{grid-template-columns:1fr}.landing-fsrs-flow>li{min-height:0}.landing-fsrs-grades>div{grid-template-columns:1fr}.landing-supporting-methods>div{grid-template-columns:1fr}.landing-supporting-methods article,.landing-supporting-methods article+article{padding:22px 0;border-left:0;border-bottom:1px solid var(--line)}.landing-supporting-methods article:last-child{border-bottom:0}.landing-observation-grid article{min-height:0}.landing-references ol{margin-left:0;padding-left:24px}.landing-closing{align-items:stretch;flex-direction:column;gap:28px}.landing-closing .landing-cta-button{width:100%}}.form-context{margin:-12px 0 0;color:var(--muted);line-height:1.55}.learner-actions,.inline-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.learner-actions .primary-command,.learner-actions .secondary-command{flex:1 1 160px}@media(max-width:800px){.topbar{height:58px;padding:0 18px}.brand-mark{width:32px;height:32px;font-size:19px}.desktop-nav{display:none}.mobile-nav{position:fixed;right:0;bottom:0;left:0;z-index:30;display:grid;grid-template-columns:repeat(4,1fr);min-height:66px;padding-bottom:env(safe-area-inset-bottom);border-top:1px solid var(--line);background:var(--paper)}.mobile-nav a{display:grid;min-width:0;place-items:center;align-content:center;gap:3px;color:var(--muted);font-size:11px;font-weight:700}.mobile-nav a.active{color:var(--teal-dark)}.app-shell{padding-bottom:calc(66px + env(safe-area-inset-bottom))}.page{width:min(100% - 28px,720px);padding:30px 0 42px}h1{font-size:35px}.practice-band{min-height:224px;align-items:stretch;flex-direction:column;justify-content:space-between;padding:28px 24px}.practice-band .primary-command{align-self:stretch}.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.metric-grid article{min-height:112px;padding:18px 16px 16px 50px}.metric-grid article:nth-child(2){border-right:0}.metric-grid article:nth-child(-n+2){border-bottom:1px solid var(--line)}.metric-grid svg,.metric-glyph{top:24px;left:17px}.session-page{min-height:calc(100vh - 58px);min-height:calc(100svh - 58px);padding:14px 10px 22px}.lesson-stage{min-height:calc(100vh - 94px);min-height:calc(100svh - 94px);padding:22px 18px}.practice-word{min-height:145px;font-size:61px}.blend-track{min-height:100px}.blend-segment .blend-grapheme{font-size:34px}.audio-control{align-items:stretch;flex-direction:column}.audio-control-action{margin-left:0}.chain-actions{grid-template-columns:repeat(2,minmax(0,1fr))}.chain-actions>:first-child,.chain-actions>:nth-child(2){width:100%}.chain-actions>:last-child{grid-column:1 / -1;width:100%}.rating-grid{grid-template-columns:1fr}.rating-grid button{min-height:88px}.dashboard-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.review-rows>div{grid-template-columns:34px minmax(0,1fr)}.review-rows small{grid-column:2;text-align:left}.setup-page{display:block;padding:22px 14px}.setup-brand{margin:0 0 20px 4px}.setup-page>section{padding:26px 20px}.landing-hero{padding:64px 16px 40px;gap:22px}.landing-hero>form{padding:26px 20px}.landing-section{padding:56px 18px}}@media(max-width:430px){.brand>span:last-child{display:none}.practice-band{min-height:210px}.practice-band h1,.page-heading h1,.rating-stage h1{font-size:31px}.metric-grid strong{font-size:25px}.stage-header strong{font-size:15px}.practice-word{min-height:124px;font-size:52px}.blend-track{min-height:88px}.blend-segment .blend-grapheme{font-size:29px}.secondary-command,.miss-command,.primary-command{padding-right:12px;padding-left:12px}.storage-band{align-items:flex-start;flex-direction:column}.storage-band span{text-align:left}}.pacing-settings{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-bottom:22px}.pacing-settings label{display:grid;gap:7px;font-size:14px;font-weight:650;color:var(--ink)}.pacing-settings input{padding:11px 13px;border:1px solid var(--line);border-radius:7px;background:var(--paper);font-size:16px;font-weight:600}.pacing-settings input:focus-visible{outline:2px solid var(--focus);outline-offset:1px}.filter-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.filter-chips button{padding:8px 16px;border:1px solid var(--line);border-radius:999px;background:var(--paper);font-size:14px;font-weight:650;cursor:pointer}.filter-chips button.selected{border-color:var(--teal);background:var(--teal-soft);color:var(--teal-dark)}.card-rows{display:grid;gap:10px}.card-row{display:grid;gap:4px;padding:14px 16px;border:1px solid var(--line);border-radius:9px;background:var(--paper);color:inherit;text-decoration:none}.card-row:hover{border-color:var(--teal)}.card-row small{color:var(--muted)}.status-chip{justify-self:start;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;background:var(--wash);color:var(--muted)}.status-chip.status-suspended{background:var(--gold-soft);color:var(--gold)}.status-chip.status-review{background:var(--teal-soft);color:var(--teal-dark)}.status-chip.status-learning,.status-chip.status-relearning{background:#e5ebf7;color:#31578b}.status-chip.status-new{background:var(--coral-soft);color:#9e3025}.trouble-panel{margin-bottom:18px;padding:16px;border:1px solid var(--line);border-radius:9px;background:var(--paper)}.trouble-panel>header{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:12px}.trouble-panel>header span{color:var(--muted);font-size:13px}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.trouble-chip,.forecast-chip{padding:5px 12px;border-radius:999px;font-size:13px;font-weight:650}.trouble-chip{background:var(--coral-soft);color:#9e3025}.forecast-chip{background:var(--teal-soft);color:var(--teal-dark)}.card-actions{display:flex;flex-wrap:wrap;align-items:end;gap:12px;margin:18px 0 22px}.card-actions button{display:inline-flex;align-items:center;gap:7px;padding:10px 16px;border:1px solid var(--line);border-radius:7px;background:var(--paper);font-weight:650;cursor:pointer}.card-actions button:disabled{opacity:.55;cursor:default}.card-actions label{display:grid;gap:6px;font-size:13px;font-weight:650;color:var(--muted)}.card-actions select{padding:10px 12px;border:1px solid var(--line);border-radius:7px;background:var(--paper);font:inherit;font-weight:600}.card-detail-page .page-heading a{display:inline-flex;align-items:center;gap:5px;color:var(--muted);text-decoration:none}.dashboard-page>.primary-command{margin-bottom:22px}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.explainer-band{margin-top:24px;padding:32px 34px;border:1px solid var(--line);border-left:7px solid var(--teal);border-radius:8px;background:var(--paper)}.explainer-band h1,.explainer-band h2{margin:6px 0 14px}.explainer-band p{max-width:720px;margin:0 0 12px;color:var(--muted);line-height:1.6}.explainer-band p strong{color:var(--ink)}.explainer-band .primary-command{margin-top:8px}.chain-list{margin-top:28px}.chain-list-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.chain-list-heading h2{margin:0}.chain-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.chain-card{display:flex;flex-direction:column;justify-content:space-between;gap:16px;padding:20px 22px;border:1px solid var(--line);border-radius:8px;background:var(--paper)}.chain-card h3{margin:0 0 6px}.chain-card-meta{margin:0 0 4px;color:var(--teal);font-size:13px;font-weight:700}.chain-card-count{margin:0 0 4px;font-weight:700}.chain-card-summary{margin:0;color:var(--muted);font-size:13px}.chain-card-actions{display:flex;gap:10px}.chain-card-actions .secondary-command{flex:1 1 auto;justify-content:center;text-align:center}.create-chain-page section{margin-top:22px}.create-chain-page h2{margin:0 0 12px}.field-label{display:block;max-width:460px;margin:0;color:var(--muted);font-size:13px;font-weight:700}.text-field{display:block;width:100%;margin-top:6px;padding:11px 13px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--ink);font-size:16px}.text-field:focus-visible{outline:3px solid rgba(8,127,106,.35);outline-offset:1px}.create-chain-page .hint{margin:0 0 10px;color:var(--muted);font-size:13px}.source-word-list{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 0;padding:0;list-style:none}.source-word{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:var(--paper);color:var(--ink);font-size:15px;cursor:pointer}.source-word--readonly{cursor:default}.source-word:hover{border-color:var(--teal)}.source-word--readonly:hover{border-color:var(--line)}.source-word:focus-visible{outline:3px solid rgba(8,127,106,.35);outline-offset:1px}.source-word small{color:var(--muted)}.chip-list{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 12px;padding:0;list-style:none}.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 8px 6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--paper);color:var(--ink);font-size:15px;max-width:100%}.chip>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.create-chain-page textarea.text-field{width:100%;resize:vertical;min-height:72px;font:inherit}html[data-landscape-required],html[data-landscape-required] body{overflow:hidden}.landscape-gate{position:fixed;inset:0;z-index:1000;display:grid;align-content:center;justify-items:center;gap:12px;padding:max(24px,env(safe-area-inset-top)) max(24px,env(safe-area-inset-right)) max(24px,env(safe-area-inset-bottom)) max(24px,env(safe-area-inset-left));background:#f6f8f5;color:var(--ink);text-align:center;overscroll-behavior:contain}.landscape-gate:focus{outline:none}.landscape-gate svg{color:var(--teal)}.landscape-gate h2{margin:8px 0 0;font-family:Georgia,Times New Roman,serif;font-size:28px;font-weight:500;line-height:1.15}.landscape-gate p{max-width:30ch;margin:0;color:var(--muted);font-size:16px;line-height:1.55}.landscape-gate .landscape-gate-tip{font-size:15px}.landscape-gate .secondary-command{margin-top:12px}@media(max-width:640px),(orientation:landscape)and (max-height:500px)and (min-width:560px){.research-landing .landing-method-row aside p,.research-landing .landing-fsrs-flow p,.research-landing .landing-fsrs-grades p,.research-landing .landing-rationale-notes p,.research-landing .landing-fsrs-caveat,.research-landing .landing-technical-note p{font-size:15px}.research-landing .landing-masthead>span,.research-landing .landing-section-number,.research-landing .landing-method-row aside strong,.research-landing .landing-rationale-notes strong,.research-landing .landing-observation-grid article>span,.research-landing .landing-technical-note summary,.research-landing .landing-background-reading,.research-landing .landing-references li a,.research-landing .landing-background-reading a,.research-landing .landing-citations,.research-landing .landing-footer p{font-size:12px}.research-landing .landing-citations a{position:relative}.research-landing .landing-citations a:after{position:absolute;inset:-12px -4px;content:""}.research-landing .landing-scroll-cue{display:flex;min-height:44px;align-items:center;padding:0 12px}.research-landing .landing-technical-note summary{padding:14px 0}.research-landing .landing-references li a,.research-landing .landing-background-reading a{display:inline-block;padding:6px 0}.research-landing .landing-paper-heading p:not(.landing-section-number),.research-landing .landing-method-copy p,.research-landing .landing-fsrs-caveat,.research-landing .landing-technical-note p,.research-landing .landing-closing p:not(.landing-section-number){max-width:68ch}.research-landing .landing-footer{padding-right:max(18px,env(safe-area-inset-right));padding-left:max(18px,env(safe-area-inset-left))}}.chain-detail-page{width:min(100% - 40px,1240px)}.chain-detail-header{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px 28px;margin-bottom:24px}.chain-detail-title h1{font-size:34px}.chain-detail-totals{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 0}.chain-detail-totals div{min-width:88px;padding:8px 14px;border:1px solid var(--line);border-radius:8px;background:var(--paper)}.chain-detail-totals dt,.chain-word-facts dt{color:var(--muted);font-size:12px;font-weight:700}.chain-detail-totals dd{margin:2px 0 0;font-size:20px;font-weight:750;font-variant-numeric:tabular-nums}.chain-detail-actions{display:flex;flex-wrap:wrap;gap:10px}.chain-words-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px}.chain-words-bar h2{margin:0;font-size:22px}.chain-words-bar .filter-chips{margin:0}.filter-count{margin-left:4px;color:var(--muted);font-weight:600;font-variant-numeric:tabular-nums}.chain-words-search{display:inline-flex;min-height:40px;align-items:center;gap:6px;margin-left:auto;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:var(--paper);color:var(--muted)}.chain-words-search:focus-within{border-color:var(--focus)}.chain-words-search input{width:150px;min-height:38px;border:0;outline:none;background:transparent;color:var(--ink);font:inherit;font-size:14px}.chain-words-hint{margin:10px 0 12px;color:var(--muted);font-size:14px}.word-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:var(--paper)}.word-table{width:100%;border-collapse:collapse;font-size:14px;font-variant-numeric:tabular-nums}.word-table th{padding:0;border-bottom:1px solid var(--line);background:var(--wash);text-align:left;white-space:nowrap}.word-table th button{width:100%;padding:10px;border:0;background:transparent;color:var(--muted);font:inherit;font-size:12px;font-weight:800;text-align:inherit;white-space:nowrap;cursor:pointer}.word-table th[aria-sort=ascending] button,.word-table th[aria-sort=descending] button{color:var(--teal-dark)}.sort-mark{margin-left:4px;font-size:10px}.word-table td{padding:7px 10px;border-bottom:1px solid var(--line);vertical-align:middle;white-space:nowrap}.word-table .numeric{text-align:right}.word-table tbody tr:not(.word-table-panel):hover td{background:var(--wash)}.word-table tr.selected td{background:#f1f8f5}.word-table tr.selected td:first-child{box-shadow:inset 3px 0 0 var(--teal)}.word-table-word{margin:-4px -8px;padding:4px 8px;border:0;border-radius:6px;background:transparent;color:var(--teal-dark);font:inherit;font-size:16px;font-weight:750;text-decoration:underline;text-decoration-color:transparent;cursor:pointer}.word-table-word:hover,.word-table-word:focus-visible{text-decoration-color:currentColor}.word-table-syllabus{display:block;max-width:250px;overflow:hidden;text-overflow:ellipsis}.syllabus-lesson{font-weight:700}.syllabus-title,.word-table-syllabus.added{color:var(--muted)}.word-table-empty{padding:24px;color:var(--muted);text-align:center}.audio-chip,.rating-chip{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:700}.audio-chip.audio-current{background:var(--teal-soft);color:var(--teal-dark)}.audio-chip.audio-stale{background:var(--gold-soft);color:var(--gold)}.audio-chip.audio-missing{background:var(--wash);color:var(--muted)}.rating-chip.rating-1{background:var(--coral-soft);color:#9e3025}.rating-chip.rating-2{background:var(--gold-soft);color:var(--gold)}.rating-chip.rating-3{background:var(--teal-soft);color:var(--teal-dark)}.rating-chip.rating-4{background:#e5ebf7;color:#31578b}.word-table-panel td{padding:16px;border-bottom:2px solid var(--teal);white-space:normal}.chain-word-panel{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,300px);align-items:start;gap:18px 28px}.chain-word-panel-word{margin:0 0 10px;font-family:Georgia,Times New Roman,serif;font-size:40px;font-weight:600;line-height:1}.chain-word-facts{display:grid;gap:10px;margin:0}.chain-word-facts dd{margin:2px 0 0;font-size:14px}.chain-word-link a{color:var(--teal-dark);font-size:14px;font-weight:700}.word-table-pages{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:14px;color:var(--muted);font-size:14px;font-variant-numeric:tabular-nums}@media(max-width:800px){.chain-word-panel{grid-template-columns:minmax(0,1fr)}.chain-words-search{margin-left:0}}@media(orientation:landscape)and (max-height:500px)and (min-width:560px){.topbar,.desktop-nav{display:none}.mobile-nav{position:fixed;inset:0 auto 0 0;z-index:30;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:repeat(4,minmax(0,1fr));width:calc(72px + env(safe-area-inset-left));min-height:0;padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom) env(safe-area-inset-left);border-top:0;border-right:1px solid var(--line);background:var(--paper)}.mobile-nav a{display:grid;min-width:0;place-items:center;align-content:center;gap:3px;color:var(--muted);font-size:11px;font-weight:700}.mobile-nav a.active{color:var(--teal-dark)}.app-shell{padding:0 env(safe-area-inset-right) env(safe-area-inset-bottom) calc(72px + env(safe-area-inset-left))}.page{width:min(100% - 32px,1120px);padding:16px 0 28px}h1,.practice-band h1,.page-heading h1{font-size:28px}.page-heading{margin-bottom:16px}.centered-state,.fatal-state,.splash{min-height:calc(100vh - 28px);min-height:calc(100svh - 28px)}.session-page{min-height:0;padding:10px 14px 16px}.word-practice-page .lesson-stage{width:100%;min-height:0;padding:0;border:0;border-radius:0;background:none}.word-practice-page .chain-stage{display:grid;grid-template-columns:minmax(0,1fr) minmax(250px,.85fr);align-items:start;column-gap:16px}.word-practice-page .chain-stage-rate{position:sticky;top:10px}.word-practice-page .stage-header{min-height:0;align-items:center;gap:12px;font-size:13px}.word-practice-page .stage-header>div{display:flex;min-width:0;align-items:baseline;gap:10px}.word-practice-page .stage-header strong,.word-practice-page .stage-header>span{font-size:15px}.word-practice-page .progress-line{margin:6px 0 4px}.word-practice-page .chain-ribbon{gap:6px;margin:4px -4px 0}.word-practice-page .chain-ribbon button{min-width:56px;min-height:32px;padding:0 10px;font-size:14px}.chain-stage .practice-word{min-height:56px;padding:6px 8px;font-size:44px}.word-practice-page .touch-blend{width:100%}.word-practice-page .touch-heading{min-height:32px}.word-practice-page .touch-pronunciation{font-size:14px}.word-practice-page .blend-track,.word-practice-page .touch-loading{min-height:76px}.word-practice-page .blend-segment{gap:6px}.word-practice-page .blend-segment .blend-grapheme{font-size:30px}.word-practice-page .audio-control{min-height:40px;flex-direction:row;align-items:center;gap:10px;margin-top:8px}.word-practice-page .audio-control-action{min-height:36px;margin-left:auto;font-size:14px}.word-practice-page .rating-grid{grid-template-columns:minmax(0,1fr);gap:6px}.word-practice-page .rating-grid button{min-height:0;gap:2px;padding:7px 12px}.word-practice-page .rating-grid strong{gap:10px;font-size:16px}.word-practice-page .rating-grid kbd{width:22px;height:22px;font-size:13px}.word-practice-page .rating-grid span{font-size:13px;line-height:1.3}.word-practice-page .historical-actions{grid-template-columns:minmax(0,1fr);margin-top:0}.practice-band{min-height:0;align-items:center;flex-direction:row;gap:20px;padding:16px 20px}.practice-band .primary-command{align-self:center}.explainer-band{margin-top:14px;padding:16px 18px}.metric-grid{grid-template-columns:repeat(auto-fit,minmax(118px,1fr));margin-top:14px}.metric-grid article,.metric-grid article:nth-child(-n+2){min-height:76px;padding:12px 12px 12px 44px;border-bottom:0}.metric-grid article:nth-child(2){border-right:1px solid var(--line)}.metric-grid article:last-child{border-right:0}.metric-grid svg,.metric-glyph{top:16px;left:14px}.metric-grid strong{font-size:24px}.chain-actions{grid-template-columns:1fr auto 1fr}.curriculum-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:14px}.curriculum-list>button{min-height:52px;padding:8px 12px}.setup-page{display:grid;grid-template-columns:minmax(0,1fr);place-items:start center;gap:10px;min-height:0;padding:12px max(16px,env(safe-area-inset-right)) 16px max(16px,env(safe-area-inset-left))}.setup-page .setup-brand{justify-self:start;margin:0;font-size:17px}.setup-page>section{width:min(100%,720px);padding:16px 20px}.setup-page h1{margin-bottom:12px;font-size:26px}.research-landing .landing-hero{min-height:0;padding:12px max(20px,env(safe-area-inset-right)) 18px max(20px,env(safe-area-inset-left))}.landing-masthead{display:flex;align-items:center;flex-direction:row;gap:16px;padding-bottom:10px}.landing-hero-grid{grid-template-columns:minmax(0,1fr) minmax(280px,340px);grid-template-rows:auto 1fr;grid-template-areas:"copy form" "sub form";align-items:start;column-gap:24px;row-gap:0;min-height:0;padding:14px 0 10px}.research-landing .landing-hero-copy{align-self:start}.research-landing .landing-headline{margin:8px 0 14px;font-size:clamp(26px,4.2vw,34px)}.research-landing .landing-subhead{font-size:15px;line-height:1.6}.research-landing .landing-hero form{max-width:none;padding:14px 16px;box-shadow:4px 4px #e3e6df}.research-landing .landing-hero h1{margin-bottom:8px;font-size:22px}.research-landing .landing-hero label{margin:10px 0 8px}.research-landing .landing-section{padding:36px max(24px,env(safe-area-inset-right)) 36px max(24px,env(safe-area-inset-left))}.landing-paper-heading{grid-template-columns:minmax(0,1fr);gap:10px;margin-bottom:22px;padding-bottom:14px}.landing-fsrs-flow,.landing-fsrs-grades>div,.landing-observation-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.landing-fsrs-grades{grid-template-columns:minmax(0,1fr);gap:12px}.landing-fsrs-flow>li,.landing-observation-grid article{min-height:0;padding:18px}.landing-method-row{grid-template-columns:42px minmax(0,1fr);gap:14px;padding:22px 0}.landing-method-row aside{grid-column:2;padding:14px 0 0;border-top:1px solid var(--line);border-left:0}.landing-rationale-notes{grid-template-columns:minmax(0,1fr)}.landing-rationale-notes article,.landing-rationale-notes article:first-child,.landing-rationale-notes article:last-child{padding:18px 0;border-right:0;border-bottom:1px solid var(--line)}.landing-rationale-notes article:last-child{border-bottom:0}.landing-closing{align-items:center;flex-direction:row}.chain-detail-page .word-table .minor,.chain-detail-page .word-table .syllabus-title{display:none}.chain-detail-header{align-items:center;gap:10px 16px;margin-bottom:12px}.chain-detail-title h1{font-size:24px}.chain-detail-totals{gap:6px;margin-top:6px}.chain-detail-totals div{display:flex;min-width:0;align-items:baseline;gap:6px;padding:3px 10px}.chain-detail-totals dd{margin:0;font-size:15px}.chain-detail-actions .primary-command,.chain-detail-actions .secondary-command,.chain-detail-actions .danger-command{min-height:36px;padding:6px 14px;font-size:14px}.chain-words-bar h2{font-size:18px}.chain-words-bar .filter-chips button{padding:5px 10px;font-size:13px}.chain-words-search{min-height:34px}.chain-words-search input{width:120px;min-height:32px}.chain-words-hint{margin:6px 0 8px;font-size:13px}.chain-detail-page .word-table{font-size:13px}.chain-detail-page .word-table td{padding:5px 8px}.chain-detail-page .chain-word-panel{grid-template-columns:minmax(0,1fr) minmax(180px,230px)}}
