@import "https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;900&family=Noto+Sans+KR:wght@400;500;700;900&display=swap";:root{--bg:#f7f4f0;--surface:#fff;--surface-2:#ede5dc;--surface-hover:#f1ece7;--text:#171516;--text-2:#5b595a;--text-muted:#817b78;--border:#d5cdc4;--border-strong:#beb5ac;--primary:#8e2f32;--primary-hover:#7b262a;--primary-active:#6f1e22;--on-primary:#fff;--accent:#d95b45;--accent-hover:#c94d39;--on-accent:#fff;--secondary:#5b9fc9;--secondary-hover:#4b91bd;--on-secondary:#fff;--card:#fff;--input:#fff;--input-border:#cfc5bb;--link:#397fae;--link-hover:#2e6d98;--selected:#e5f1f8;--selected-border:#5b9fc9;--shadow:#17151614;--success:#4f9d73;--success-bg:#e8f4ed;--on-success:#fff;--error:#c0392f;--error-bg:#fbeae7;--warning:#c98a2e;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--sidebar-width:252px;--mobile-nav-height:72px;--duration-fast:.14s;--ease-standard:ease-out}[data-theme=dark]{--bg:#141213;--surface:#1d1a1b;--surface-2:#262223;--surface-hover:#302b2c;--text:#f3eee9;--text-2:#c9c0b8;--text-muted:#9c9490;--border:#3a3536;--border-strong:#514a4c;--primary:#b5474b;--primary-hover:#c65a5d;--primary-active:#98363a;--on-primary:#fff;--accent:#f07a63;--accent-hover:#fa8c75;--on-accent:#1a1414;--secondary:#72b6de;--secondary-hover:#86c4e8;--on-secondary:#101517;--card:#1d1a1b;--input:#221f20;--input-border:#433d3e;--link:#72b6de;--link-hover:#93cbea;--selected:#1d3543;--selected-border:#72b6de;--shadow:#00000059;--success:#6fc18f;--success-bg:#193527;--on-success:#101a14;--error:#e4695e;--error-bg:#3a2320;--warning:#e0ac5c}html,body,#root{min-height:100%;margin:0}html{background:var(--bg);scrollbar-width:none;-ms-overflow-style:none}html::-webkit-scrollbar{width:0;height:0;display:none}body::-webkit-scrollbar{width:0;height:0;display:none}body{background:var(--bg);min-width:320px;color:var(--text);-webkit-font-smoothing:antialiased;font-family:Noto 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var(--space-4);gap:var(--space-5);background:var(--surface);border-right:1px solid var(--border);flex-direction:column;display:flex;position:sticky;top:0}.app-sidebar__brand,.app-sidebar__nav-item,.app-sidebar__profile{align-items:center;display:flex}.app-sidebar__brand{gap:var(--space-3);padding:0 var(--space-2)}.app-sidebar__logo{object-fit:contain;width:38px;height:38px;display:block}.app-sidebar__title{letter-spacing:-.01em;font-size:17px;font-weight:700}.app-sidebar__nav,.app-sidebar__footer,.app-sidebar__profile-copy{flex-direction:column;display:flex}.app-sidebar__nav{gap:var(--space-1)}.app-sidebar__nav-item{gap:var(--space-3);min-height:46px;padding:0 var(--space-3);color:var(--text-2);text-align:left;border-radius:var(--radius-md);transition:background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);background:0 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var(--ease-standard);background:0 0;border:none}.app-sidebar__profile:hover{background:var(--surface-hover)}.app-sidebar__avatar{object-fit:cover;border:1px solid var(--border);border-radius:50%;flex:0 0 34px;width:34px;height:34px;display:block}.app-sidebar__avatar--fallback{color:var(--text-2);background:var(--surface-2);place-items:center;font-size:14px;font-weight:700;display:grid}.app-sidebar__profile-name{font-size:14px;font-weight:500}.app-sidebar__profile-label{color:var(--text-muted);font-size:12px}.mobile-nav__item{min-height:58px;padding:var(--space-1);justify-content:center;align-items:center;gap:var(--space-1);color:var(--text-muted);border-radius:var(--radius-md);transition:color var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard);background:0 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rise;display:flex}.auto-fit-grid{gap:12px;display:grid}.auto-fit-grid--metrics{grid-template-columns:repeat(auto-fit,minmax(110px,1fr))}.auto-fit-grid--tiles{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.auto-fit-grid--sets{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.auto-fit-grid--words{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.controls-row{flex-wrap:wrap;gap:12px;display:flex}.controls-row>*{flex:180px}@media (width>=901px){.page{padding-bottom:var(--space-6)}.mobile-nav,.mobile-profile-button{display:none}}@media (width<=900px){.app-sidebar{display:none}}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.app-sidebar__nav-item:disabled,.mobile-nav__item:disabled{color:var(--text-muted);opacity:.45;cursor:not-allowed}.session{background:var(--bg);flex-direction:column;min-height:100dvh;display:flex}.session__head{align-items:center;gap:12px;width:100%;max-width:820px;margin:0 auto;padding:14px 16px 0;display:flex}.session__quit{width:44px;height:44px;color:var(--text-muted);background:0 0;border:none;border-radius:12px;flex:0 0 44px;font-size:20px}.session__track{background:var(--surface-2);border-radius:99px;flex:1;height:14px;overflow:hidden}.session__fill{background:var(--secondary);transform-origin:0;border-radius:99px;height:100%;transition:transform .26s}.session__count{color:var(--text-muted);font-variant-numeric:tabular-nums;text-align:right;min-width:60px;font-size:13px}.session__body{flex-direction:column;flex:1;justify-content:center;width:100%;max-width:760px;margin:0 auto;padding:16px;display:flex}.session__actions{width:100%;max-width:760px;padding:10px 16px calc(14px + env(safe-area-inset-bottom));background:var(--bg);gap:10px;margin:0 auto;display:flex;position:sticky;bottom:0}.session__actions button{flex:1;min-height:56px;font-size:16px;font-weight:700}.flash-card{background:var(--card);width:100%;color:var(--text);border:1px solid var(--border);box-shadow:0 8px 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16px;display:flex}.word-sheet{background:var(--surface);border-radius:20px;width:100%;max-width:620px;max-height:88dvh;padding:20px;overflow-y:auto}.word{flex-direction:column;gap:20px;display:flex}.word p,.word h2,.word h3{margin:0}.word__head{border-bottom:1px solid var(--border);grid-template-columns:1fr auto;align-items:end;gap:4px 12px;padding-bottom:16px;display:grid}.word__reading{color:var(--text-muted);font-size:15px}.word__written{word-break:keep-all;font-family:Noto Sans JP,sans-serif;font-size:clamp(38px,10vw,54px);font-weight:700;line-height:1.15}.word__speak{border:1px solid var(--border);width:44px;height:44px;color:var(--text-2);background:0 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