:root{--sp-2xs: 2px;--sp-xs: 4px;--sp-sm: 8px;--sp-md: 12px;--sp-lg: 16px;--sp-xl: 24px;--sp-2xl: 32px;--sp-3xl: 48px;--sp-4xl: 64px;--fs-2xs: .65rem;--fs-xs: .75rem;--fs-sm: .82rem;--fs-base: .92rem;--fs-md: 1rem;--fs-lg: 1.15rem;--fs-xl: 1.35rem;--fs-2xl: 1.65rem;--fs-3xl: 2.1rem;--fw-normal: 400;--fw-medium: 500;--fw-semibold: 600;--fw-bold: 700;--fw-extrabold: 800;--lh-tight: 1.2;--lh-normal: 1.5;--lh-relaxed: 1.7;--bp-sm: 480px;--bp-lg: 1024px;--bp-xl: 1280px;--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-in-out: cubic-bezier(.4, 0, .2, 1);--dur-fast: .12s;--dur-normal: .2s;--dur-slow: .35s;--touch-min: 44px;--z-base: 1;--z-dropdown: 100;--z-sticky: 200;--z-modal-backdrop: 300;--z-modal: 400;--z-popover: 500;--z-toast: 600;--z-tooltip: 700;--fs-label: .6rem;--fs-caption: .72rem;--fs-body: .88rem;--fs-title: 1.4rem;--fs-display: 2rem;--fs-hero: 2.4rem;--fs-giant: 3rem;--z-panel: 510;--z-onboarding: 800;--z-live: 810;--z-overlay-guide: 820;--z-alert: 840;--z-dialog: 860;--z-achievement: 880;--z-skip: 999;--bp-xs: 480px;--bp-sm: 600px;--bp-md: 768px;--bp-lg: 900px;--bp-xl: 1024px;--bp-2xl: 1280px}[data-theme=oled]{--bg: #000000;--bg2: #0A0A0A;--bg3: #1A1A1A;--surface: #0D0D0D;--surface2: #1A1A1A;--surface3: #2A2A2A;--border: rgba(255,255,255,.06);--border2: rgba(255,255,255,.04);--text: rgba(255,255,255,.95);--text2: rgba(255,255,255,.5);--muted: rgba(255,255,255,.28)}[data-theme=high-contrast]{--bg: #000000;--bg2: #1A1A1A;--surface: #000000;--surface2: #1A1A1A;--border: #FFFFFF;--border2: #CCCCCC;--text: #FFFFFF;--text2: #EEEEEE;--muted: #CCCCCC;--red: #FF4444;--green: #44FF44;--amber: #FFFF44;--blue: #FF4444}[data-theme=high-contrast] .sp-back,[data-theme=high-contrast] .iie-btn,[data-theme=high-contrast] .mod-card{border-width:2px}[data-font-size=small]{font-size:14px}[data-font-size=normal]{font-size:16px}[data-font-size=large]{font-size:18px}[data-font-size=xlarge]{font-size:20px}.iie-keyboard-nav *:focus{outline:3px solid var(--blue, #C41230);outline-offset:2px}*:focus:not(:focus-visible){outline:none}*:focus-visible{outline:3px solid var(--blue, #C41230);outline-offset:2px}.iie-reduced-motion *,.iie-reduced-motion *:before,.iie-reduced-motion *:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.iie-skip-link:focus{top:0!important}.iie-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-sm);min-height:var(--touch-min);padding:var(--sp-md) var(--sp-xl);border-radius:var(--r-md, 14px);border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:var(--font);font-size:var(--fs-sm);font-weight:var(--fw-bold);cursor:pointer;transition:all var(--dur-fast) var(--ease-out);text-decoration:none;white-space:nowrap;-webkit-tap-highlight-color:transparent}.iie-btn:hover{background:var(--surface2);border-color:#00000026;transform:translateY(-1px)}.iie-btn:active{transform:translateY(0)}.iie-btn-primary{background:var(--red, #C41230);color:#fff;border-color:transparent}.iie-btn-primary:hover{background:var(--red2, #A00E28);border-color:transparent}.iie-btn-sm{min-height:36px;padding:var(--sp-sm) var(--sp-lg);font-size:var(--fs-xs)}.iie-btn-lg{min-height:52px;padding:var(--sp-lg) var(--sp-2xl);font-size:var(--fs-md)}.iie-btn-icon{width:var(--touch-min);height:var(--touch-min);padding:0;border-radius:var(--r-sm, 10px)}.iie-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg, 18px);padding:var(--sp-xl);box-shadow:var(--s1);transition:all var(--dur-normal) var(--ease-out)}.iie-card:hover{box-shadow:var(--s2);border-color:#0000001f}.iie-card-clickable{cursor:pointer}.iie-card-clickable:hover{transform:translateY(-2px)}.iie-input{width:100%;min-height:var(--touch-min);padding:var(--sp-md) var(--sp-lg);border-radius:var(--r-md, 14px);border:1.5px solid var(--border);background:var(--surface);color:var(--text);font-family:var(--font);font-size:var(--fs-base);transition:border-color var(--dur-fast),box-shadow var(--dur-fast)}.iie-input:focus{outline:none;border-color:var(--blue, #C41230);box-shadow:0 0 0 3px #c4123026}.iie-input::placeholder{color:var(--muted)}.iie-badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:var(--pill, 999px);font-size:var(--fs-2xs);font-weight:var(--fw-bold);letter-spacing:.04em;text-transform:uppercase}.iie-badge-success{background:#22c55e1f;color:var(--green)}.iie-badge-warning{background:#f59e0b1f;color:var(--amber)}.iie-badge-danger{background:#c412301f;color:var(--red)}.iie-badge-info{background:#c412301f;color:var(--blue)}.iie-modal-backdrop{position:fixed;inset:0;background:#00000080;z-index:var(--z-modal-backdrop);opacity:0;visibility:hidden;transition:all var(--dur-normal);backdrop-filter:blur(4px)}.iie-modal-backdrop.show{opacity:1;visibility:visible}.iie-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.95);z-index:var(--z-modal);background:var(--surface);border-radius:var(--r-xl, 24px);box-shadow:var(--s3);max-width:90vw;max-height:90vh;overflow-y:auto;opacity:0;visibility:hidden;transition:all var(--dur-slow) var(--ease-out)}.iie-modal.show{opacity:1;visibility:visible;transform:translate(-50%,-50%) scale(1)}.iie-toast{position:fixed;bottom:var(--sp-xl);left:50%;transform:translate(-50%) translateY(20px);z-index:var(--z-toast);padding:var(--sp-md) var(--sp-xl);border-radius:var(--r-md);font-size:var(--fs-sm);font-weight:var(--fw-semibold);box-shadow:var(--s2);opacity:0;transition:all var(--dur-normal) var(--ease-out);max-width:90vw}.iie-toast.show{opacity:1;transform:translate(-50%) translateY(0)}.srs-session{max-width:600px;margin:0 auto;padding:var(--sp-xl)}.srs-header{display:flex;align-items:center;gap:var(--sp-md);margin-bottom:var(--sp-2xl)}.srs-progress-bar{flex:1;height:6px;background:var(--bg3);border-radius:var(--pill);overflow:hidden}.srs-progress-fill{height:100%;background:var(--green);border-radius:var(--pill);transition:width var(--dur-normal)}.srs-progress-text{font-size:var(--fs-xs);font-weight:var(--fw-bold);color:var(--text2);font-family:var(--mono)}.srs-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);padding:var(--sp-3xl) var(--sp-2xl);text-align:center;box-shadow:var(--s2);min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-lg)}.srs-word{font-size:var(--fs-3xl);font-weight:var(--fw-extrabold);color:var(--text);letter-spacing:-.02em}.srs-translation{font-size:var(--fs-xl);font-weight:var(--fw-bold);color:var(--blue);margin-top:var(--sp-lg);padding-top:var(--sp-lg);border-top:1px solid var(--border)}.srs-example{font-size:var(--fs-sm);color:var(--text2);font-style:italic;max-width:400px}.srs-meta{display:flex;gap:var(--sp-lg);margin-top:var(--sp-sm);font-size:var(--fs-2xs);font-family:var(--mono);color:var(--muted)}.srs-audio-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;padding:var(--sp-sm);border-radius:50%;transition:background var(--dur-fast)}.srs-audio-btn:hover{background:var(--surface2)}.srs-show-btn{display:block;width:100%;max-width:400px;margin:var(--sp-xl) auto 0;min-height:52px;background:var(--red);color:#fff;border:none;border-radius:var(--r-md);font-family:var(--font);font-size:var(--fs-md);font-weight:var(--fw-bold);cursor:pointer;transition:background var(--dur-fast)}.srs-show-btn:hover{background:var(--red2)}.srs-rating{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-sm);margin-top:var(--sp-xl)}.srs-rate-btn{display:flex;flex-direction:column;align-items:center;gap:2px;padding:var(--sp-md) var(--sp-sm);border-radius:var(--r-md);border:1px solid var(--border);background:var(--surface);cursor:pointer;transition:all var(--dur-fast);min-height:var(--touch-min)}.srs-rate-btn:hover{border-color:var(--blue);background:var(--surface2);transform:translateY(-2px)}.srs-rate-emoji{font-size:1.3rem}.srs-rate-label{font-size:var(--fs-2xs);font-weight:var(--fw-bold);color:var(--text)}.srs-rate-desc{font-size:var(--fs-2xs);color:var(--muted);font-family:var(--mono)}.srs-complete{text-align:center;padding:var(--sp-3xl) var(--sp-xl)}.srs-complete-icon{font-size:3rem;margin-bottom:var(--sp-lg)}.srs-stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-md);margin:var(--sp-2xl) auto;max-width:400px}.srs-stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);padding:var(--sp-lg)}.srs-stat-value{font-size:var(--fs-2xl);font-weight:var(--fw-extrabold);color:var(--text)}.srs-stat-label{font-size:var(--fs-2xs);color:var(--text2);margin-top:2px}.srs-forecast{margin-top:var(--sp-2xl)}.srs-forecast-bars{display:flex;align-items:flex-end;justify-content:center;gap:var(--sp-sm);height:80px;margin-top:var(--sp-md)}.srs-forecast-day{display:flex;flex-direction:column;align-items:center;gap:4px}.srs-forecast-bar{width:28px;background:var(--blue);border-radius:4px 4px 0 0;min-height:4px}.srs-forecast-label{font-size:var(--fs-2xs);color:var(--muted);font-family:var(--mono)}.srs-btn-back{margin-top:var(--sp-2xl);min-height:var(--touch-min);padding:var(--sp-md) var(--sp-2xl);border-radius:var(--r-md);border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:var(--font);font-weight:var(--fw-bold);cursor:pointer}@media (max-width: 768px){.iie-bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:var(--z-sticky);background:var(--surface);border-top:1px solid var(--border);display:flex;justify-content:space-around;padding:var(--sp-sm) 0;padding-bottom:max(var(--sp-sm),env(safe-area-inset-bottom));backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.iie-bottom-nav-item{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:var(--touch-min);min-height:var(--touch-min);padding:var(--sp-xs) var(--sp-sm);border:none;background:none;color:var(--text2);font-size:var(--fs-2xs);font-weight:var(--fw-semibold);cursor:pointer;transition:color var(--dur-fast);position:relative}.iie-bottom-nav-item.active{color:var(--red)}.iie-bottom-nav-item .nav-icon{font-size:1.2rem}.iie-bottom-nav-item .nav-badge{position:absolute;top:0;right:4px;min-width:16px;height:16px;background:var(--red);color:#fff;border-radius:999px;font-size:9px;font-weight:800;display:flex;align-items:center;justify-content:center;padding:0 4px}.sp-page,#main{padding-bottom:80px!important}}#iie-connection-status{display:none;position:fixed;top:var(--topbar-h, 56px);left:0;right:0;z-index:var(--z-toast);padding:var(--sp-sm) var(--sp-lg);background:var(--amber);color:#000;font-size:var(--fs-xs);font-weight:var(--fw-bold);text-align:center}#iie-install-pwa{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:root{--font: "Plus Jakarta Sans", system-ui, sans-serif;--mono: "Plus Jakarta Sans", monospace;--r-xs: 6px;--r-sm: 10px;--r-md: 14px;--r-lg: 18px;--r-xl: 24px;--pill: 999px;--red2: #A00E28;--s1: 0 1px 6px rgba(0,0,0,.05), 0 2px 10px rgba(0,0,0,.04);--s2: 0 2px 12px rgba(0,0,0,.06), 0 8px 28px rgba(0,0,0,.05);--s3: 0 4px 20px rgba(0,0,0,.08), 0 16px 48px rgba(0,0,0,.06);--topbar-h: 56px;--glow: 0 4px 14px rgba(196, 18, 48, .4);--qc: #C41230;--qb: rgba(0, 0, 0, .08);--qbg: #f7f8fc;--qd: var(--surface2);--ipc-c: #C41230;--dv3-accent: #C41230;--iie-accent: #C41230;--toast-dur: 4s}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--s1: 0 1px 6px rgba(0,0,0,.3), 0 2px 10px rgba(0,0,0,.2);--s2: 0 2px 12px rgba(0,0,0,.4), 0 8px 28px rgba(0,0,0,.3);--s3: 0 4px 20px rgba(0,0,0,.45), 0 16px 48px rgba(0,0,0,.35)}}[data-theme=dark]{--s1: 0 1px 6px rgba(0,0,0,.3), 0 2px 10px rgba(0,0,0,.2);--s2: 0 2px 12px rgba(0,0,0,.4), 0 8px 28px rgba(0,0,0,.3);--s3: 0 4px 20px rgba(0,0,0,.45), 0 16px 48px rgba(0,0,0,.35);--qb: rgba(255, 255, 255, .08);--qbg: #1c1c1e}.iie-btn-v2{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-sm);min-height:var(--touch-min, 44px);padding:var(--sp-md) var(--sp-xl);border-radius:var(--r-md);border:1.5px solid transparent;background:var(--surface);color:var(--text);font-family:var(--font);font-size:var(--fs-sm);font-weight:var(--fw-bold, 700);line-height:1;letter-spacing:.01em;text-decoration:none;white-space:nowrap;cursor:pointer;transition:background var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);-webkit-tap-highlight-color:transparent;user-select:none;position:relative;overflow:hidden}.iie-btn-v2:focus-visible{outline:3px solid var(--blue);outline-offset:2px}.iie-btn-v2:disabled,.iie-btn-v2[aria-disabled=true]{opacity:.42;cursor:not-allowed;pointer-events:none}.iie-btn-v2-primary{background:var(--red);color:#fff;border-color:transparent;box-shadow:var(--glow-sm)}.iie-btn-v2-primary:hover:not(:disabled){background:var(--red2);box-shadow:var(--glow);transform:translateY(-1px)}.iie-btn-v2-primary:active:not(:disabled){transform:translateY(0);box-shadow:none}.iie-btn-v2-secondary{background:var(--surface2);border-color:var(--border);color:var(--text2)}.iie-btn-v2-secondary:hover:not(:disabled){background:var(--bg3);border-color:var(--border2);color:var(--text)}.iie-btn-v2-ghost{background:transparent;border-color:var(--border);color:var(--text2)}.iie-btn-v2-ghost:hover:not(:disabled){background:var(--surface2);color:var(--text)}.iie-btn-v2-danger{background:#c412301a;border-color:#c412304d;color:var(--red)}.iie-btn-v2-danger:hover:not(:disabled){background:#c412302e;border-color:var(--red)}.iie-btn-v2-success{background:#22c55e1f;border-color:#22c55e4d;color:var(--green)}.iie-btn-v2-success:hover:not(:disabled){background:var(--green);color:#fff;border-color:transparent}.iie-btn-v2-xs{min-height:28px;padding:var(--sp-xs) var(--sp-md);font-size:var(--fs-caption);border-radius:var(--r-sm)}.iie-btn-v2-sm{min-height:36px;padding:var(--sp-xs) var(--sp-lg);font-size:var(--fs-xs)}.iie-btn-v2-lg{min-height:52px;padding:var(--sp-lg) var(--sp-2xl);font-size:var(--fs-body);font-weight:800}.iie-btn-v2-xl{min-height:60px;padding:var(--sp-xl) var(--sp-3xl);font-size:var(--fs-md);font-weight:800;border-radius:var(--r-lg)}.iie-btn-v2-icon{width:var(--touch-min, 44px);height:var(--touch-min, 44px);padding:0;border-radius:var(--r-sm);flex-shrink:0}.iie-btn-v2-icon.iie-btn-v2-sm{width:36px;height:36px}.iie-btn-v2-block{width:100%}.iie-btn-v2-pill{border-radius:var(--pill)}.iie-btn-v2[data-loading=true]{color:transparent;pointer-events:none}.iie-btn-v2[data-loading=true]:after{content:"";position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:currentColor;border-radius:50%;animation:iie-spin .6s linear infinite;color:#fff}@keyframes iie-spin{to{transform:translate(-50%,-50%) rotate(360deg)}}.iie-card-v2{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);padding:var(--sp-xl);box-shadow:var(--s1);position:relative;overflow:hidden;transition:box-shadow var(--dur-normal) var(--ease-out),border-color var(--dur-normal) var(--ease-out),transform var(--dur-normal) var(--ease-out)}.iie-card-v2-accent:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--red),transparent 60%)}.iie-card-v2-interactive{cursor:pointer}.iie-card-v2-interactive:hover{box-shadow:var(--s2);border-color:#0000001a;transform:translateY(-2px)}.iie-card-v2-interactive:active{transform:translateY(0);box-shadow:var(--s1)}.iie-card-v2-sm{padding:var(--sp-lg);border-radius:var(--r-lg)}.iie-card-v2-lg{padding:var(--sp-2xl);border-radius:var(--r-xl)}.iie-card-v2-hdr{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-md);margin-bottom:var(--sp-lg)}.iie-card-v2-title{font-size:var(--fs-body);font-weight:800;letter-spacing:-.025em;color:var(--text)}.iie-card-v2-tag{font-family:var(--mono);font-size:var(--fs-label);font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.iie-badge-v2{display:inline-flex;align-items:center;gap:var(--sp-xs);padding:2px var(--sp-sm);border-radius:var(--pill);font-family:var(--mono);font-size:var(--fs-label);font-weight:700;letter-spacing:.04em;text-transform:uppercase;border:1px solid transparent;white-space:nowrap}.iie-badge-v2-success{background:#22c55e1f;border-color:#22c55e40;color:var(--green)}.iie-badge-v2-warning{background:#f59e0b1f;border-color:#f59e0b40;color:var(--amber)}.iie-badge-v2-danger{background:#c412301a;border-color:#c4123040;color:var(--red)}.iie-badge-v2-info{background:#c412301a;border-color:#c4123040;color:var(--blue)}.iie-badge-v2-purple{background:#a855f71a;border-color:#a855f740;color:var(--purple)}.iie-badge-v2-neutral{background:var(--surface2);border-color:var(--border);color:var(--text2)}.iie-badge-v2-dot{width:8px;height:8px;padding:0;border-radius:50%;background:var(--red)}.iie-badge-v2-count{min-width:20px;height:20px;padding:0 var(--sp-xs);font-size:9px;border-radius:var(--pill);background:var(--red);color:#fff;border:none;justify-content:center}.iie-input-v2{width:100%;min-height:var(--touch-min, 44px);padding:var(--sp-md) var(--sp-lg);border-radius:var(--r-md);border:1.5px solid 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