:root{color-scheme:light;--ground: #ffffff;--surface: #f5f8f6;--surface-strong: #edf3ef;--raised: #ffffff;--ink: #1f2824;--muted: #59645f;--faint: #68736d;--border: #e5e9e6;--rule: #edf0ed;--control: #b7c1ba;--accent: #1b6e66;--accent-dark: #155950;--primary-ink: #ffffff;--positive: #247b50;--negative: #9c372a;--avatar-okomi: #f1e7df;--avatar-ifemi: #e0ece7;--avatar-okomi-ink: #704b39;--avatar-ifemi-ink: #315d4b;--lesson-number: #52665a;--sync-dot: #748078;--sync-offline: #9b6532;--hover: #f0f2f0;--hover-strong: #fafcfb;--separator: #e2e8e4;--ornament: #dfe9e3;--track: #e9efeb;--code-surface: #e7f0ed;--disabled-surface: #e8eeea;--positive-surface: #edf6ef;--positive-border: #92b39a;--positive-ink: #245c35;--negative-surface: #fbefec;--negative-border: #d7a399;--negative-ink: #8e3024;--invite-mark: #e5eee8;--radius-card: 20px;--radius-control: 10px;--gap: 16px;--ease-out: cubic-bezier(.23, 1, .32, 1);--font: "Instrument Sans", Inter, system-ui, sans-serif;--font-greeting: "Instrument Serif", Georgia, serif}:root[data-theme=dark]{color-scheme:dark;--ground: #151b18;--surface: #1c2520;--surface-strong: #26332c;--raised: #202a24;--ink: #e7eee9;--muted: #b6c1ba;--faint: #a0ada5;--border: #35433b;--rule: #2e3b33;--control: #58675e;--accent: #73cbb3;--accent-dark: #91ddc7;--primary-ink: #10251d;--positive: #7fd29a;--negative: #f19a8b;--avatar-okomi: #40332c;--avatar-ifemi: #293d34;--avatar-okomi-ink: #e8cdbb;--avatar-ifemi-ink: #b6dfc9;--lesson-number: #b8d5c3;--sync-dot: #91a096;--sync-offline: #e7b874;--hover: #27332c;--hover-strong: #222d27;--separator: #35433b;--ornament: #35443b;--track: #344239;--code-surface: #2b3c33;--disabled-surface: #2a362f;--positive-surface: #20382a;--positive-border: #496d53;--positive-ink: #a4dfb2;--negative-surface: #3d2926;--negative-border: #765049;--negative-ink: #ffb6a8;--invite-mark: #2b3a31}*{box-sizing:border-box}html{background:var(--ground);scroll-behavior:smooth}body{background:var(--ground);color:var(--ink);font-family:var(--font);font-size:14px;margin:0;-webkit-font-smoothing:antialiased;transition:background-color .2s ease,color .2s ease}button,input,select{color:inherit;font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.hidden{display:none!important}.app-shell{min-height:100vh}.sidebar{background:var(--ground);bottom:0;display:flex;flex-direction:column;left:0;padding:30px 18px 22px;position:fixed;top:0;width:240px;z-index:4}.brand{align-items:center;color:var(--ink);display:inline-flex;font-size:17px;font-weight:600;gap:9px;letter-spacing:-.5px}.desktop-brand{margin:3px 0 42px 8px}.brand-mark{align-items:center;background:var(--accent);border-radius:50%;color:#fff;display:inline-flex;font-family:var(--font-greeting);font-size:19px;height:27px;justify-content:center;line-height:1;width:27px}.space-label{color:var(--faint);font-size:12px;margin:0 0 12px 10px}.space-switcher{align-items:center;display:flex;gap:9px;margin:0 0 28px;min-height:44px;padding:0 8px}.partner-marks{align-items:center;display:flex;padding-left:1px}.partner-mark{align-items:center;border:2px solid white;border-radius:50%;display:inline-flex;flex:0 0 28px;font-size:10px;font-weight:600;height:28px;justify-content:center;overflow:hidden;width:28px}.partner-mark img{height:100%;object-fit:cover;width:100%}.partner-mark+.partner-mark{margin-left:-8px}.okomi-mark,.okomi-avatar{background:var(--avatar-okomi);color:var(--avatar-okomi-ink)}.ifemi-mark,.ifemi-avatar{background:var(--avatar-ifemi);color:var(--avatar-ifemi-ink)}.space-names strong,.space-names span{display:block}.space-names strong{font-size:12px;font-weight:600}.space-names span{color:var(--faint);font-size:12px;margin-top:3px}.nav-links{display:grid;gap:5px}.nav-link{align-items:center;border-radius:8px;color:var(--muted);display:flex;font-size:14px;min-height:36px;padding:0 11px}.nav-link:hover,.nav-link.active{background:var(--hover);color:var(--ink)}.sidebar-foot{border-top:1px solid var(--border);color:var(--muted);margin-top:auto;padding:16px 9px 0}.sidebar-foot p{font-family:var(--font-greeting);font-size:20px;line-height:1.25;margin:0 0 13px}.sidebar-foot>span{color:var(--faint);font-size:12px}.sidebar-about-link{color:var(--muted);display:block;font-size:12px;margin-top:12px;width:fit-content}.sidebar-about-link:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.mobile-bar{display:none}.main-content{margin-left:240px;min-height:100vh;padding:20px 46px 32px}.main-inner{margin:0 auto;max-width:1100px}.account-row{align-items:center;display:flex;height:34px;justify-content:flex-end;gap:18px}.sync-state{align-items:center;color:var(--muted);display:inline-flex;font-size:12px;gap:7px}.sync-dot{background:var(--sync-dot);border-radius:50%;height:7px;width:7px}.sync-state.online .sync-dot{background:var(--positive)}.sync-state.offline .sync-dot{background:var(--sync-offline)}.account-button{background:transparent;border:0;color:var(--accent);font-size:13px;font-weight:500;padding:7px 0}.account-button:hover{color:var(--accent-dark);text-decoration:underline;text-underline-offset:3px}.theme-toggle{align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:99px;color:var(--ink);display:inline-flex;font-size:12px;gap:6px;min-height:34px;padding:0 11px;transition:background-color .15s ease,border-color .15s ease,transform .14s var(--ease-out)}.theme-toggle:active{transform:scale(.98)}.theme-toggle:hover{background:var(--surface-strong);border-color:var(--control)}.theme-toggle .theme-icon{color:var(--accent);font-size:15px;line-height:1}.theme-toggle .theme-label{color:var(--ink);font-size:12px}.page-heading{align-items:center;display:flex;justify-content:space-between;margin:29px 0 27px;min-height:74px}.date-line{color:var(--muted);font-size:13px;margin:0 0 6px}h1,h2,p{margin-top:0}.page-heading h1,.pairing-screen h1{color:var(--ink);font-family:var(--font-greeting);font-size:32px;font-weight:400;letter-spacing:-.5px;line-height:1.13;margin:0}.heading-copy{color:var(--muted);font-size:14px;line-height:1.5;margin:8px 0 0}.language-switch{align-items:center;background:transparent;border:1px solid var(--border);border-radius:12px;display:flex;gap:10px;min-height:53px;padding:7px 12px 7px 8px;text-align:left}.language-switch:hover{background:var(--hover-strong);border-color:var(--control)}.language-code{align-items:center;background:var(--code-surface);border-radius:8px;color:var(--accent-dark);display:inline-flex;flex:0 0 36px;font-size:11px;font-weight:600;height:36px;justify-content:center;letter-spacing:.3px}.language-switch strong,.language-switch small{display:block;white-space:nowrap}.language-switch strong{font-size:13px;font-weight:500}.language-switch small{color:var(--muted);font-size:12px;margin-top:3px}.chevron{color:var(--muted);font-size:18px;margin-left:2px}.metric-strip{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:var(--gap)}.metric{min-width:0;padding:17px 19px 16px}.metric+.metric{border-left:1px solid var(--separator)}.metric-label{color:var(--muted);display:block;font-size:13px}.metric-value{color:var(--ink);font-size:27px;font-variant-numeric:tabular-nums;font-weight:400;letter-spacing:-.7px;line-height:1.2;margin:9px 0 3px}.metric-value small{color:var(--muted);font-size:13px;letter-spacing:0}.metric-note{color:var(--muted);display:block;font-size:12px;line-height:1.45}.home-grid{display:grid;gap:var(--gap);grid-template-columns:repeat(12,minmax(0,1fr))}.lesson-panel,.practice-panel,.phrase-panel,.invite-panel,.moments-panel{border:1px solid var(--border);border-radius:var(--radius-card);min-width:0}.lesson-panel{background:var(--surface);display:flex;flex-direction:column;grid-column:span 8;justify-content:space-between;min-height:244px;overflow:hidden;padding:22px 24px 18px;position:relative}.lesson-panel:after{border:1px solid var(--ornament);border-radius:50%;content:"";height:190px;pointer-events:none;position:absolute;right:48px;top:43px;width:190px}.lesson-panel:before{border:1px solid var(--ornament);border-radius:50%;content:"";height:146px;pointer-events:none;position:absolute;right:70px;top:65px;width:146px}.lesson-header,.lesson-meta{align-items:center;display:flex}.lesson-header{justify-content:space-between;position:relative;z-index:1}.lesson-meta{gap:10px}.lesson-label{color:var(--muted);font-size:12px}.duration{border:1px solid var(--border);border-radius:20px;color:var(--muted);font-size:12px;padding:5px 10px}.lesson-number{color:var(--lesson-number);font-family:var(--font-greeting);font-size:18px}.lesson-copy{max-width:540px;position:relative;z-index:1}.lesson-copy h2{color:var(--ink);font-family:var(--font-greeting);font-size:30px;font-weight:400;letter-spacing:-.3px;margin:17px 0 6px}.lesson-copy p{color:var(--muted);font-size:14px;line-height:1.55;margin:0;max-width:390px}.lesson-footer{align-items:center;display:flex;justify-content:space-between;margin-top:22px;position:relative;z-index:1}.lesson-note{align-items:center;color:var(--muted);display:inline-flex;font-size:12px;gap:8px}.primary-button{align-items:center;background:var(--accent);border:1px solid var(--accent);border-radius:var(--radius-control);color:var(--primary-ink);display:inline-flex;font-size:13px;font-weight:500;gap:16px;justify-content:center;min-height:40px;padding:0 17px;transition:background-color .15s ease,border-color .15s ease,transform .14s var(--ease-out)}.primary-button:active:not(:disabled){transform:scale(.98)}.primary-button:hover:not(:disabled){background:var(--accent-dark);border-color:var(--accent-dark)}.primary-button:disabled{cursor:wait;opacity:.7}.primary-button span{font-size:16px}.practice-panel{background:var(--raised);grid-column:span 4;min-height:244px;padding:21px 20px 18px}.panel-heading{align-items:center;display:flex;justify-content:space-between;gap:12px}.context-label{color:var(--muted);font-size:12px;line-height:1.35;margin:0 0 5px}.panel-heading h2,.moments-panel h2{color:var(--ink);font-size:16px;font-weight:500;letter-spacing:-.15px;line-height:1.35;margin:0}.today-tag,.count-label{color:var(--muted);font-size:12px;white-space:nowrap}.practice-caption{color:var(--muted);font-size:13px;line-height:1.5;margin:13px 0 17px}.practice-lanes{display:grid;gap:14px}.practice-lane{align-items:center;display:grid;gap:8px;grid-template-columns:28px 55px minmax(20px,1fr) 33px;min-width:0}.lane-avatar{align-items:center;border-radius:50%;display:inline-flex;font-size:11px;font-weight:600;height:28px;justify-content:center;overflow:hidden;width:28px}.lane-avatar 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16px}.quote-mark{color:var(--accent);font-family:var(--font-greeting);font-size:39px;line-height:.8}.phrase-words{min-width:0}.phrase-target{color:var(--ink);font-family:var(--font-greeting);font-size:22px;line-height:1.2;margin:0 0 5px}.phrase-translation{color:var(--muted);font-size:13px;margin:0}.sound-button{background:transparent;border:1px solid var(--border);border-radius:99px;color:var(--muted);font-size:12px;margin-left:auto;min-height:34px;padding:0 12px;white-space:nowrap}.sound-button:hover{background:var(--surface);border-color:var(--control);color:var(--ink)}.phrase-actions{align-items:center;border-top:1px solid var(--rule);color:var(--muted);display:flex;font-size:12px;justify-content:space-between;padding-top:11px}.save-button{background:transparent;border:0;color:var(--accent);font-size:12px;padding:4px 0 4px 8px;white-space:nowrap}.save-button span{font-size:15px;margin-right:4px}.save-button.saved span{color:var(--positive)}.invite-panel{align-items:flex-start;background:var(--surface);display:flex;grid-column:span 6;justify-content:space-between;min-height:197px;overflow:hidden;padding:20px 22px;position:relative}.invite-content{max-width:330px;position:relative;z-index:1}.invite-content h2{color:var(--ink);font-family:var(--font-greeting);font-size:21px;font-weight:400;line-height:1.25;margin:7px 0;max-width:260px}.invite-content>p:last-child{color:var(--muted);font-size:13px;line-height:1.5;margin:0;max-width:320px}.invite-actions{align-self:flex-end;position:relative;z-index:1}.outline-button{background:var(--raised);border:1px solid var(--border);border-radius:99px;color:var(--accent);font-size:12px;min-height:38px;padding:0 13px;white-space:nowrap}.outline-button span{font-size:15px;margin-left:5px}.invite-mark{color:var(--invite-mark);font-family:var(--font-greeting);font-size:150px;line-height:.8;position:absolute;right:16px;top:40px;transform:rotate(5deg)}.invite-code-label{color:var(--muted);display:block;font-size:12px;margin-bottom:5px}.invite-code-row{align-items:center;display:flex;gap:8px}.invite-code{background:var(--raised);border:1px solid var(--border);border-radius:8px;color:var(--ink);font-size:14px;font-variant-numeric:tabular-nums;letter-spacing:1.5px;padding:8px 10px}.copy-button{background:transparent;border:0;color:var(--accent);font-size:12px;padding:8px 0}.member-count{color:var(--muted);font-size:12px;margin-top:8px}.compact-heading{margin-top:36px}.practice-view-grid{display:grid;gap:var(--gap);grid-template-columns:1fr 1fr}.practice-feature{grid-column:span 1;min-height:300px}.practice-progress-card{align-items:flex-start;display:flex;flex-direction:column;grid-column:span 1;min-height:300px}.practice-progress-card .practice-lanes{margin-top:24px;width:100%}.practice-lanes-large{gap:20px}.practice-lanes-large .practice-lane{grid-template-columns:34px 70px minmax(30px,1fr) 38px}.practice-lanes-large .lane-avatar{height:34px;width:34px}.practice-lanes-large .lane-name{font-size:14px}.practice-progress-card .lane-foot{margin:13px 0 0 42px}.practice-progress-card>.primary-button{margin-top:auto}.moments-panel{background:var(--raised);padding:22px}.saved-list{display:grid;gap:0;margin-top:16px}.saved-phrase{align-items:center;border-top:1px solid var(--rule);display:grid;gap:12px;grid-template-columns:minmax(0,1fr) auto;padding:15px 0}.saved-phrase:first-child{border-top:0}.saved-phrase p{margin:0}.saved-phrase .phrase-target{font-size:18px}.saved-phrase .phrase-translation{font-size:13px;margin-top:4px}.remove-phrase{background:transparent;border:0;color:var(--muted);font-size:12px;padding:8px}.remove-phrase:hover{color:var(--negative)}.empty-note{border:1px dashed var(--border);border-radius:10px;color:var(--muted);font-size:13px;grid-column:1 / -1;line-height:1.5;margin:0;padding:15px}.pairing-screen{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);margin:70px auto 0;max-width:520px;padding:30px}.pairing-screen h1{font-size:32px}.pairing-intro{color:var(--muted);font-size:14px;line-height:1.55;margin:9px 0 24px;max-width:400px}.pairing-tabs{border-bottom:1px solid var(--border);display:flex;gap:18px;margin-bottom:20px}.pairing-tab{background:transparent;border:0;border-bottom:2px solid transparent;color:var(--muted);font-size:13px;margin-bottom:-1px;padding:10px 0}.pairing-tab.active{border-bottom-color:var(--accent);color:var(--ink)}.pairing-form{display:grid;gap:9px}.pairing-form label,.dialog-form label{color:var(--ink);font-size:13px;font-weight:500;margin-top:7px}.pairing-form input,.pairing-form select,.dialog-form input{background:var(--raised);border:1px solid var(--control);border-radius:var(--radius-control);font-size:14px;min-height:42px;padding:0 13px}.pairing-form input::placeholder,.dialog-form input::placeholder{color:var(--faint)}.pairing-form .primary-button{margin-top:9px}.pairing-message,.form-message{color:var(--muted);font-size:13px;line-height:1.5;margin:13px 0 0;min-height:18px}.pairing-message.error,.form-message.error{color:var(--negative)}.pairing-message.success,.form-message.success{color:var(--positive)}.dialog{background:var(--raised);border:1px solid var(--border);border-radius:20px;color:var(--ink);max-width:min(440px,calc(100vw - 28px));opacity:0;overflow:visible;padding:29px 30px 25px;transform:scale(.96);transition:opacity .2s var(--ease-out),transform .2s var(--ease-out),display .2s allow-discrete,overlay .2s allow-discrete;width:440px}.dialog[open]{opacity:1;transform:scale(1)}@starting-style{.dialog[open]{opacity:0;transform:scale(.96)}}.dialog[open]{box-shadow:0 12px 34px #17261d1f}.dialog::backdrop{background:#14251d99;opacity:0;transition:opacity .2s var(--ease-out),display .2s allow-discrete,overlay .2s allow-discrete}.dialog[open]::backdrop{opacity:1}@starting-style{.dialog[open]::backdrop{opacity:0}}.dialog-close-form{position:absolute;right:12px;top:12px}.dialog-close{align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:50%;color:var(--muted);display:flex;font-size:21px;height:30px;justify-content:center;line-height:1;width:30px}.dialog h2{color:var(--ink);font-family:var(--font-greeting);font-size:29px;font-weight:400;letter-spacing:-.3px;margin:0}.dialog-copy{color:var(--muted);font-size:14px;line-height:1.5;margin:8px 0 20px}.dialog-form{display:grid;gap:9px}.dialog-form:not(.hidden){animation:auth-form-enter .2s var(--ease-out) both}.dialog-form label{margin-top:0}.dialog-form input{transition:border-color .16s ease,box-shadow .16s ease,background-color .2s ease}.dialog-form input:focus-visible{box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}.dialog-form .primary-button{margin-top:8px}.password-field{min-width:0;position:relative}.password-field input{padding-right:64px;width:100%}.password-toggle{background:transparent;border:0;border-radius:6px;color:var(--accent);font-size:12px;min-height:34px;padding:0 8px;position:absolute;right:7px;top:4px;transition:background-color .16s,color .16s}.password-toggle:hover{background:var(--surface-strong);color:var(--accent-dark)}.auth-provider-options:not(.hidden){animation:auth-form-enter .2s var(--ease-out) both}.auth-divider{align-items:center;color:var(--faint);display:flex;font-size:12px;gap:11px;margin:12px 0 0}.auth-divider:before,.auth-divider:after{background:var(--rule);content:"";flex:1;height:1px}.google-button{align-items:center;background:var(--raised);border:1px solid var(--border);border-radius:var(--radius-control);color:var(--ink);display:flex;font-size:13px;font-weight:500;gap:10px;justify-content:center;min-height:42px;margin-top:10px;transition:background-color .15s ease,border-color .15s ease,transform .14s var(--ease-out);width:100%}.google-button:active:not(:disabled){transform:scale(.98)}.google-button:hover:not(:disabled){background:var(--surface);border-color:var(--control)}.google-button:disabled{cursor:wait;opacity:.7}.google-g{color:#4285f4;font-size:17px;font-weight:700}.auth-switch-button{background:transparent;border:0;color:var(--accent);cursor:pointer;font-size:13px;margin-top:12px;padding:4px 0;text-align:left}.auth-switch-button:hover{color:var(--accent-dark);text-decoration:underline;text-underline-offset:3px}.auth-back-button{margin:-5px 0 13px}.sign-out-button{border-top:1px solid var(--rule);color:var(--muted);margin-top:18px;padding-top:14px;width:100%}.privacy-note{border-top:1px solid 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