:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--page:#faf9f7;--surface:#fff;--raised:#f8f5f2;--ink:#3e342f;--muted:#81736b;--subtle:#93877e;--accent:#a65e42;--peach:#f7cfb9;--on-peach:#643e2c;--soft:#fff5ef;--line:#eee7e1;--input-border:#ddc6b7;--online:#238b4b;--success:#56703e;--success-soft:#eef3e7;--danger:#9d3c32;--danger-soft:#fff8f6;--placeholder:#81736b;--overlay:#231c187a;--avatar:#f9ede3;--cover:#f5e4d8;--cover-highlight:#fbefe5;--selected-border:#d7a78b;--focus:#ab7156;--activity-0:#eef1e9;--activity-1:#cbdcb9;--activity-2:#96b77f;--activity-3:#60884e;--ink-secondary:#554740;--ink-detail:#756960;--muted-warm:#8c7769;--accent-muted:#997966;--on-accent:#fff;--link:#8c5039;--hover:#fdfaf8;--soft-hover:#fce8dc;--peach-hover:#f3c0a4;--success-hover:#e5eedc;--line-soft:#f3eeea;--line-strong:#ded4cc;--danger-line:#e9c7bf;--lesson-surface:#fffbf7;--featured-surface:#fff7f1;--badge-surface:#f8f5f1;--badge-ink:#67584f;--register-surface:#f3efeb;--register-ink:#79695f;--bubble:#f5f2ef;--bubble-own:#f9ddcc;--bubble-time:#897467;--input-surface:#faf8f6;--floating-surface:#ffffffed;--disabled-surface:#e6dfd9;--disabled-ink:#a5968b;--skeleton-base:#eee8e3;--skeleton-highlight:#f8f5f2;--switch-off:#d9d5d1;--switch-thumb:#fff;--photo-overlay:#30282099;--on-overlay:#fff;--streak-soft:#fff3e6;--streak-ink:#b96c36;--streak-flame:#ffc78f;--welcome-start:#fff6ef;--welcome-end:#fffaf5;--profile-start:#fff8f2;--profile-end:#fffcfa;--shadow-soft:#6f4e2810;--shadow-menu:#49342418;--shadow-dialog:#42230d20;--shadow-thumb:#30282026}:root[data-theme=dark]{--lightningcss-light: 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var(--line);max-width:650px;min-height:100svh;margin:0 auto}.brand-header{justify-content:space-between;align-items:center;height:91px;padding:0 32px;display:flex}.brand{text-align:left;background:0 0;border:0;align-items:center;gap:11px;padding:0;display:flex}.brand-mark{background:var(--soft);width:40px;height:43px;color:var(--accent);border-radius:15px 15px 15px 5px;place-items:center;font-size:24px;font-weight:600;display:grid}.brand strong{letter-spacing:-.3px;font-size:17px;font-weight:650;display:block}.brand small{color:var(--muted);margin-top:1px;font-size:12px;display:block}.page-heading{justify-content:space-between;align-items:center;gap:12px;margin:2px 0 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[lang=ko]{letter-spacing:-1px;font-size:31px;font-weight:600}.hello>span:last-child{color:var(--accent);font-size:15px}.welcome-copy>p:last-child{white-space:pre-line;color:var(--muted-warm);font-size:15px;line-height:1.7}.hero-bunny{object-fit:contain;width:195px;height:195px;position:absolute;bottom:-1px;right:6px}.section-heading{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.muted{color:var(--muted);letter-spacing:1px;font-size:12px}.featured-sentence{border:1px solid var(--line);box-shadow:0 5px 24px var(--shadow-soft);border-radius:24px;padding:24px}.card-meta{color:var(--muted);justify-content:space-between;align-items:center;margin-bottom:22px;font-size:12px;display:flex}.lesson-category{color:var(--accent);align-items:center;gap:6px;display:flex}.korean-sentence{letter-spacing:-.7px;word-break:keep-all;overflow-wrap:anywhere;font-size:27px;font-weight:600;line-height:1.65}.translation{color:var(--muted);margin-top:5px;font-size:16px;line-height:1.6}.audio-wrap{margin:17px 0}.audio-button{color:var(--accent);background:0 0;border:0;align-items:center;gap:9px;min-height:42px;padding:0;font-size:14px;display:flex}.audio-button:disabled{color:var(--subtle)}.audio-icon{background:var(--raised);border-radius:50%;place-items:center;width:36px;height:36px;display:grid}.primary-button{background:var(--peach);width:100%;min-height:49px;color:var(--on-peach);border:0;border-radius:15px;justify-content:center;align-items:center;gap:12px;padding:12px 18px;font-size:15px;font-weight:650;transition:background .15s;display:flex}.primary-button:hover{background:var(--peach-hover)}.primary-button:disabled{opacity:.5}.completed-inline{color:var(--success);justify-content:center;align-items:center;gap:5px;margin-top:12px;font-size:12px;display:flex}.more-heading{color:var(--muted);margin:24px 0 12px;font-size:14px}.sentence-list{flex-direction:column;gap:10px;display:flex}.sentence-row{text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:19px;align-items:center;gap:14px;width:100%;padding:19px 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button{width:33.333%;color:var(--subtle);background:0 0;border:0;flex-direction:column;align-items:center;gap:2px;min-height:64px;padding:2px 0 0;font-size:14px;display:flex}.nav-icon{border-radius:14px;place-items:center;width:48px;height:31px;display:grid}.bottom-nav button[aria-current]{color:var(--accent);font-weight:650}.bottom-nav button i{border-radius:50%;width:4px;height:4px;margin-top:3px}.bottom-nav button[aria-current] i{background:var(--accent)}.heading-note{color:var(--muted);margin-top:9px;font-size:15px;line-height:1.65}.lesson-picker{gap:8px;margin:0 0 20px;display:flex}.lesson-picker button{border:1px solid var(--line);background:var(--surface);border-radius:13px;flex:1;min-height:48px;padding:11px 8px;font-size:13px}.lesson-picker span{opacity:.7;margin-right:5px;font-size:11px}.lesson-picker 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h2{overflow-wrap:anywhere;font-size:23px}.profile-level{color:var(--muted);margin-top:7px;font-size:13px;display:block}.edit-name{background:var(--surface);border:1px solid var(--line);min-height:40px;color:var(--accent-muted);border-radius:30px;align-items:center;gap:6px;margin-top:18px;padding:9px 15px;font-size:13px;display:inline-flex}.progress-section{margin-top:26px}.stats-grid{border:1px solid var(--line);border-radius:20px;margin-top:15px;padding:23px 7px;display:flex}.stats-grid>div{text-align:center;border-right:1px solid var(--line);flex:1}.stats-grid>div:last-child{border:0}.stats-grid strong{color:var(--accent);font-size:27px;font-weight:600;display:block}.stats-grid span{color:var(--muted);overflow-wrap:anywhere;margin-top:4px;font-size:12px;display:block}.profile-lessons{margin-top:29px}.profile-lessons h2{margin-bottom:15px}.empty-state{text-align:center;border:1px dashed var(--line);color:var(--subtle);border-radius:22px;padding:27px 22px 20px}.empty-state h3{color:var(--ink);margin-top:12px;font-size:16px}.empty-state p{max-width:320px;color:var(--muted);margin:8px auto 1px;font-size:14px;line-height:1.75}.device-note{text-align:center;color:var(--muted);margin:22px 0 0;font-size:12px;line-height:1.6}.name-form{text-align:left;max-width:320px;margin:0 auto}.name-form label{margin-bottom:8px;font-size:14px;display:block}.name-form input{border:1px solid var(--input-border);background:var(--surface);width:100%;color:var(--ink);border-radius:12px;padding:12px 14px;font-size:16px}.form-actions{gap:10px;margin-top:12px;display:flex}.form-actions button{flex:1}.secondary-button{border:1px solid var(--line);background:var(--surface);border-radius:15px;min-height:49px;font-size:15px}.error-note{color:var(--danger);margin-top:12px;font-size:14px;line-height:1.6}@keyframes arrive{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@media 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(prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.language-settings{border:0;min-width:0;margin:27px 0 0;padding:0}.language-settings legend{letter-spacing:-.4px;padding:0;font-size:18px;font-weight:650}.language-settings>p{color:var(--muted);margin-top:7px;font-size:14px;line-height:1.65}.language-options{gap:10px;margin-top:13px;display:flex}.language-option{border:1px solid var(--line);cursor:pointer;background:var(--surface);border-radius:15px;flex:1;align-items:center;gap:11px;min-height:54px;padding:13px 16px;font-size:15px;font-weight:500;display:flex}.language-option[data-selected=true]{border-color:var(--selected-border);background:var(--soft)}.language-option input{width:19px;height:19px;accent-color:var(--accent);cursor:pointer;flex-shrink:0;margin:0}.language-settings:disabled .language-option{cursor:default;opacity:.5}.account-card{border:1px solid var(--line);background:var(--surface);border-radius:22px;margin-top:22px;padding:21px}.account-heading{align-items:center;gap:10px;margin-bottom:10px;display:flex}.account-icon{background:var(--soft);width:35px;height:35px;color:var(--accent);border-radius:12px;place-items:center;display:grid}.account-note{color:var(--muted);overflow-wrap:anywhere;font-size:14px;line-height:1.65}.account-card>.primary-button{margin-top:15px}.account-email{overflow-wrap:anywhere;margin-top:3px;font-size:16px;line-height:1.6}.account-sync{color:var(--muted);align-items:center;gap:6px;margin-top:12px;font-size:13px;line-height:1.6;display:flex}.account-sync.error-note{color:var(--danger)}.account-logout{width:100%;color:var(--muted);justify-content:center;align-items:center;gap:8px;margin-top:15px;display:flex}.account-form{flex-direction:column;margin-top:16px;display:flex}.account-form h3{margin-bottom:6px;font-size:17px}.account-auth-modes{background:var(--raised);border-radius:13px;gap:5px;margin-bottom:5px;padding:4px;display:flex}.account-auth-modes button{min-height:42px;color:var(--muted);font:inherit;background:0 0;border:0;border-radius:10px;flex:1;font-size:14px}.account-auth-modes button[aria-pressed=true]{background:var(--surface);color:var(--ink);box-shadow:0 2px 8px var(--shadow-soft);font-weight:600}.account-form label{margin:12px 0 8px;font-size:14px}.account-form input{border:1px solid var(--input-border);width:100%;min-width:0;min-height:51px;font:inherit;background:var(--surface);color:var(--ink);border-radius:12px;padding:13px 14px;font-size:16px}.account-form .account-adult-confirmation{align-items:flex-start;gap:10px;margin-top:17px;line-height:1.5;display:flex}.account-form .account-adult-confirmation input{width:21px;height:21px;min-height:21px;accent-color:var(--accent);border-radius:5px;flex:none;margin:0;padding:0}.account-form input[aria-invalid=true]{border-color:var(--danger)}.account-form #account-code{letter-spacing:8px;text-align:center;font-variant-numeric:tabular-nums;font-size:25px}.account-form .primary-button{margin-top:15px}.account-hint{color:var(--muted);margin-top:12px;font-size:12px;line-height:1.7}.account-cancel{width:100%;color:var(--muted)}.account-unavailable{color:var(--muted);background:var(--profile-start);border-radius:12px;margin-top:10px;padding:13px;font-size:14px;line-height:1.65}.legal-links{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:center;gap:12px 24px;margin-top:16px;padding-top:16px;font-size:14px;display:flex}.legal-links a{min-height:44px;color:var(--link);text-underline-offset:4px;align-items:center;text-decoration:underline;display:inline-flex}.danger-text{color:var(--danger)}.delete-confirmation{border:1px solid var(--danger-line);background:var(--danger-soft);border-radius:16px;margin-top:16px;padding:18px}.delete-confirmation h3{margin:0 0 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20px;display:flex}.member-visitors-row-icon{background:var(--raised);height:32px;color:var(--accent);border-radius:10px;flex:0 0 32px;justify-content:center;align-items:center;display:inline-flex}.member-visitors-row-label{overflow-wrap:anywhere;flex:1;min-width:0;font-size:.9375rem;font-weight:500;line-height:1.4}.member-visitors-row-arrow{color:var(--subtle);flex-shrink:0}.member-visitors-row:active{background:var(--raised)}.member-visitors-row:focus-visible{outline:2px solid var(--focus);outline-offset:-3px}@media (hover:hover){.member-visitors-row:hover{background:var(--hover)}}.profile-visitors-dialog{width:min(100%, var(--app-width));max-width:100%;height:100dvh;max-height:100dvh;padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom);background:var(--surface);color:var(--ink);overscroll-behavior:contain;border:0;border-radius:0;margin:auto;position:fixed;inset:0}.profile-visitors-dialog[open]{flex-direction:column;display:flex;overflow:hidden}.profile-visitors-dialog::backdrop{background:var(--overlay)}.profile-visitors-screen{flex-direction:column;flex:1;min-height:0;display:flex}.profile-visitors-screen[hidden]{display:none}.profile-visitors-header{border-bottom:1px solid var(--line);flex:none;align-items:center;min-height:56px;padding:4px 8px;display:flex}.profile-visitors-header h2{outline:none;flex:1;min-width:0;margin:0 8px;font-size:1rem;font-weight:650}.profile-visitors-list{overscroll-behavior:contain;flex:1;min-height:0;overflow-y:auto}.profile-visitors-rows{margin:0 16px;padding:0;list-style:none}.profile-visitors-rows>li{border-bottom:1px solid var(--line)}.profile-visitor-row{width:100%;min-height:86px;color:var(--ink);text-align:start;cursor:pointer;background:0 0;border:0;border-radius:0;align-items:center;gap:12px;padding:13px 0;display:flex}.profile-visitor-row:active{background:var(--raised)}.profile-visitor-info{flex-direction:column;flex:1;align-items:flex-start;gap:5px;min-width:0;display:flex}.profile-visitor-info>strong{overflow-wrap:anywhere;max-width:100%;font-size:.9rem;font-weight:600}.profile-visitor-info>time{color:var(--muted);font-size:.72rem;line-height:1.4}.profile-visitor-chevron{color:var(--subtle);flex-shrink:0}.profile-visitors-more{width:calc(100% - 32px);min-height:48px;color:var(--accent);cursor:pointer;background:0 0;border:0;margin:8px 16px 16px;font-size:.85rem;font-weight:600;display:block}.profile-visitors-more:disabled{color:var(--muted);cursor:default}.identity-setup .member-editor-heading{justify-content:space-between}.identity-setup .member-editor-heading h2{text-align:left}.identity-loading{color:var(--muted);padding:28px 20px}.member-form .identity-confirmation{flex-direction:row;align-items:flex-start;gap:12px;padding:20px 0;line-height:1.5;display:flex}.identity-confirmation input{width:22px;height:22px;accent-color:var(--accent);flex:none;margin-top:2px}.member-identity-facts{padding-top:16px}.member-identity-note{color:var(--muted);align-items:center;gap:6px;font-size:.8125rem;display:flex}.member-locked-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;min-height:54px;padding:12px 0;font-size:.9375rem;display:flex}.member-locked-row>span{color:var(--muted)}.member-locked-row strong{text-align:right;overflow-wrap:anywhere;align-items:center;gap:7px;font-weight:500;display:flex}.auth-entry{min-height:100dvh;padding:max(48px, env(safe-area-inset-top)) 24px max(32px, env(safe-area-inset-bottom))}.auth-entry-heading p{color:var(--muted);margin:0 0 12px;font-weight:600}.auth-entry-heading h1{margin:0 0 28px;font-size:1.65rem;line-height:1.3}.auth-entry .account-card{border:0;border-radius:0;margin:0;padding:0}.auth-entry .language-settings{min-width:0}.auth-entry .language-options{flex-wrap:wrap}.audio-modes{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.audio-modes button{border:1px solid var(--line);background:var(--surface);min-height:44px;color:var(--ink);border-radius:12px;padding:10px 14px;font-size:14px;font-weight:600}.audio-modes button[aria-pressed=true]{background:var(--peach);color:var(--on-peach)}.audio-practice-hint{color:var(--muted);margin:8px 0 0;font-size:13px;line-height:1.6}.audio-parts{flex-wrap:wrap;gap:8px;margin-top:10px;display:flex}.audio-parts span{border:1px solid var(--line);min-width:38px;color:var(--ink);text-align:center;border-radius:10px;padding:6px 10px;font-size:19px}.audio-parts span[data-active=true]{background:var(--peach);color:var(--on-peach);border-color:var(--accent)}.learning-unit-select{color:var(--muted);flex-wrap:wrap;align-items:center;gap:10px;margin:18px 0 0;font-size:.875rem;display:flex}.learning-unit-select select{border:1px solid var(--input-border);width:100%;min-width:0;min-height:44px;color:var(--ink);background:var(--surface);font:inherit;border-radius:12px;flex:1;padding:10px}.member-language-levels{flex-wrap:wrap;gap:8px;margin:10px 0;display:flex}.member-language-level{color:var(--ink);background:var(--soft);max-width:100%;font-size:.875rem}.member-language-level span{overflow-wrap:anywhere}.avatar-presence{z-index:2;border:2px solid var(--surface);pointer-events:none;position:absolute;top:-2px;right:-3px}.avatar-presence.is-online{background:var(--online);border-radius:50%;width:14px;height:14px}.avatar-presence.last-seen{background:var(--surface);max-width:150px;color:var(--muted);white-space:nowrap;border-radius:10px;padding:2px 5px;font-size:11px;font-weight:600;line-height:1.3;transform:translate(20px)}.chat-profile-button{min-width:44px;min-height:44px;color:inherit;background:0 0;border:0;border-radius:50%;flex:none;justify-content:center;align-items:center;padding:0;display:inline-flex}.chat-profile-button:focus-visible,.chat-open-conversation:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.chat-profile-button:hover{background:var(--soft)}.chat-open-conversation{border:0;border-bottom:1px solid var(--line-soft);text-align:left;color:inherit;background:0 0;min-height:60px;padding:0 0 11px}.chat-message{margin-bottom:3px}.chat-message--group-start{margin-top:10px}.chat-message-portrait{flex:none;align-self:flex-start;width:44px}.chat-message--peer{gap:4px}.chat-message--peer .chat-bubble{min-width:0;max-width:calc(100% - 96px)}.chat-composer{flex-wrap:wrap}.chat-photo-preview{flex-basis:100%;align-items:center;gap:10px;display:flex}.chat-photo-preview img{object-fit:cover;border-radius:12px;width:76px;height:76px}.chat-photo-button{background:0 0;border:0;max-width:100%;padding:0;display:block}.chat-photo{object-fit:contain;border-radius:10px;width:auto;max-width:100%;height:auto;max-height:320px;display:block}.chat-photo-full{object-fit:contain;max-width:100%;max-height:70dvh;margin:auto;display:block}.chat-security{padding:0 22px 22px;font-size:14px;line-height:1.6}.chat-security p{margin:0 0 14px}.chat-security code{overflow-wrap:anywhere;color:var(--muted);margin:8px 0 18px;font-size:12px;display:block}.chat-report-quote{background:var(--bubble);overflow-wrap:anywhere;max-height:100px;margin:0 0 12px;padding:8px;font-size:13px;overflow:auto}.course-practice{border-top:1px solid var(--line);margin:18px 0;padding:16px 0}.course-practice h3{margin:0 0 12px;font-size:1rem}.course-line{border-bottom:1px solid var(--line);padding:10px 0}.course-line summary{cursor:pointer;align-content:center;min-height:44px}.course-speaker{color:var(--muted);margin-right:8px}.course-line p,.course-substitution p{overflow-wrap:anywhere;line-height:1.6}.course-substitution{margin-top:24px}.hangul-intro{color:var(--muted);line-height:1.7}.hangul-character{margin:12px 0;font-size:clamp(4rem,15vw,6rem)}.hangul-parts{overflow-wrap:anywhere;font-size:1.4rem}.hangul-lesson p{line-height:1.7}.hangul-review,.hangul-options{flex-wrap:wrap;gap:12px;display:flex}.hangul-review summary{cursor:pointer;min-width:44px;min-height:44px;padding:8px}.hangul-options button{border:1px solid var(--line);background:var(--surface);min-width:64px;min-height:48px;color:var(--ink);border-radius:12px;padding:10px;font-size:1.5rem}.hangul-options button[aria-pressed=true]{border-color:var(--accent);background:var(--soft)}.hangul-check{border-top:1px solid var(--line);padding:16px 0}