@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";:root{--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .12);--shadow-md: 0 4px 16px rgba(0, 0, 0, .15);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .2);--shadow-glow: 0 0 40px rgba(26, 107, 191, .22);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s cubic-bezier(.16, 1, .3, 1);--container-max-width: 720px;--bg-primary: #0c0d12;--bg-secondary: #141520;--bg-card: rgba(22, 24, 36, .75);--bg-card-hover: rgba(30, 33, 50, .85);--bg-input: rgba(22, 24, 36, .9);--bg-badge: rgba(26, 107, 191, .15);--bg-loading: rgba(22, 24, 36, .95);--border-subtle: rgba(255, 255, 255, .06);--border-input: rgba(255, 255, 255, .1);--border-input-focus: rgba(26, 107, 191, .55);--text-primary: #e8e9f0;--text-secondary: #8b8ea3;--text-muted: #5c5f73;--text-accent: #7eb8f7;--text-link: #5aa3f0;--text-link-hover: #7eb8f7;--accent: #1a6bbf;--accent-soft: rgba(26, 107, 191, .2);--meta-bg: rgba(255, 255, 255, .05);--diff-delete-bg: rgba(239, 68, 68, .12);--diff-delete-text: #f87171;--diff-insert-bg: rgba(52, 211, 153, .12);--diff-insert-text: #34d399;--scrollbar-track: transparent;--scrollbar-thumb: rgba(255, 255, 255, .1);--icon-color: #9ca3b0}@media(prefers-color-scheme:light){:root{--bg-primary: #f5f5f8;--bg-secondary: #ffffff;--bg-card: rgba(255, 255, 255, .85);--bg-card-hover: rgba(255, 255, 255, .95);--bg-input: rgba(255, 255, 255, .95);--bg-badge: rgba(0, 53, 128, .09);--bg-loading: rgba(255, 255, 255, .95);--border-subtle: rgba(0, 0, 0, .06);--border-input: rgba(0, 0, 0, .12);--border-input-focus: rgba(0, 53, 128, .45);--text-primary: #1a1b25;--text-secondary: #5c5f73;--text-muted: #8b8ea3;--text-accent: #003580;--text-link: #0047a8;--text-link-hover: #003580;--accent: #003580;--accent-soft: rgba(0, 53, 128, .1);--meta-bg: rgba(0, 0, 0, .04);--diff-delete-bg: rgba(239, 68, 68, .08);--diff-delete-text: #dc2626;--diff-insert-bg: rgba(22, 163, 74, .08);--diff-insert-text: #16a34a;--scrollbar-track: transparent;--scrollbar-thumb: rgba(0, 0, 0, .12);--icon-color: #4b505f;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .1);--shadow-glow: 0 0 40px rgba(0, 53, 128, .12)}}*,*:before,*:after{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100dvh;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--scrollbar-track)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:var(--radius-full)}.app-container{max-width:var(--container-max-width);margin:0 auto;padding:2rem 1.5rem 4rem;position:relative}.ambient-glow{position:fixed;top:-200px;left:50%;transform:translate(-50%);width:600px;height:400px;background:radial-gradient(ellipse,rgba(26,107,191,.1) 0%,transparent 70%);pointer-events:none;z-index:-1}@media(prefers-color-scheme:light){.ambient-glow{background:radial-gradient(ellipse,rgba(0,53,128,.06) 0%,transparent 70%)}}.app-header{text-align:center;margin-bottom:2.5rem;display:flex;flex-direction:column;align-items:center}.app-title{font-size:1.75rem;font-weight:700;letter-spacing:-.03em;color:var(--text-primary);margin-bottom:.25rem}.app-title .accent{background:linear-gradient(135deg,var(--accent),#4a9fe0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.app-subtitle{font-size:.875rem;color:var(--text-muted);font-weight:400}.back-link{display:inline-flex;align-self:flex-start;align-items:center;gap:.4rem;font-size:.82rem;font-weight:500;color:var(--text-secondary);text-decoration:none;margin-bottom:1.5rem;padding:.35rem .75rem .35rem .5rem;border-radius:var(--radius-full);border:1.5px solid var(--border-input);background:var(--bg-card);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:color var(--transition-fast),border-color var(--transition-fast),background var(--transition-fast),box-shadow var(--transition-fast)}.back-link:hover{color:var(--text-accent);border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px var(--accent-soft)}.back-link svg{width:14px;height:14px;opacity:.7;flex-shrink:0}.app-footer{text-align:center;margin-top:4rem;padding-top:2rem;border-top:1px solid var(--border-subtle);color:var(--text-muted);font-size:.75rem;line-height:1.8}.app-footer a{color:var(--text-accent);text-decoration:none;transition:color var(--transition-fast)}.app-footer a:hover{color:var(--accent)}@media(max-width:600px){.app-container{padding:1.5rem 1rem 3rem}.app-title{font-size:1.35rem}}.footer-actions{display:flex;justify-content:center;gap:.6rem;flex-wrap:wrap;margin-bottom:1.25rem}.report-bug-btn{display:inline-flex;align-items:center;background:transparent;border:1.5px solid var(--border-input);border-radius:var(--radius-full);padding:.45rem 1rem;font-family:var(--font-sans);font-size:.78rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:color var(--transition-fast),border-color var(--transition-fast),background var(--transition-fast),box-shadow var(--transition-fast);text-decoration:none}.report-bug-btn:hover{color:var(--text-accent);border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px var(--accent-soft)}.report-bug-btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--radius-full)}a.report-bug-btn,a.report-bug-btn:hover{color:var(--text-accent)}.pwa-install-btn{display:inline-flex;align-items:center;gap:.35rem;background:transparent;border:1.5px solid var(--border-input);border-radius:var(--radius-full);padding:.45rem 1rem;font-family:var(--font-sans);font-size:.78rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:color var(--transition-fast),border-color var(--transition-fast),background 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var(--border-input);border-radius:var(--radius-lg);padding:1.75rem;box-shadow:var(--shadow-lg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);transform:translateY(12px) scale(.98);transition:transform .22s cubic-bezier(.16,1,.3,1)}.report-modal-overlay.open .report-modal{transform:translateY(0) scale(1)}.report-modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem}.report-modal-title{font-size:1rem;font-weight:600;color:var(--text-primary);letter-spacing:-.01em}.report-modal-close{background:none;border:none;padding:.2rem .4rem;font-size:.9rem;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);transition:color var(--transition-fast),background var(--transition-fast);line-height:1;user-select:none}.report-modal-close:hover{color:var(--text-primary);background:var(--meta-bg)}.report-modal-close:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.report-modal-hint{font-size:.82rem;color:var(--text-secondary);line-height:1.5;margin-bottom:1rem}.report-textarea{width:100%;padding:.875rem 1rem;font-family:var(--font-sans);font-size:.9rem;color:var(--text-primary);background:var(--bg-input);border:1.5px solid var(--border-input);border-radius:var(--radius-md);outline:none;resize:vertical;min-height:110px;line-height:1.5;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.report-textarea::placeholder{color:var(--text-muted)}.report-textarea:focus{border-color:var(--border-input-focus);box-shadow:0 0 0 3px var(--accent-soft)}.report-char-count{font-size:.72rem;color:var(--text-muted);text-align:right;margin-top:.35rem;margin-bottom:1rem}.suggest-email-label{display:block;font-size:.8rem;font-weight:500;color:var(--text-secondary);margin-bottom:.4rem}.suggest-email-optional{font-weight:400;color:var(--text-muted)}.suggest-email-input{width:100%;padding:.65rem 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transparent}.report-cancel{background:var(--meta-bg);color:var(--text-secondary);border-color:var(--border-subtle)}.report-cancel:hover{background:var(--bg-card-hover);color:var(--text-primary)}.report-submit{background:var(--accent);color:#fff}.report-submit:hover:not(:disabled){background:#1e40af;box-shadow:0 0 0 3px var(--accent-soft);transform:translateY(-1px)}.report-submit:disabled{opacity:.6;cursor:not-allowed}.report-cancel:focus-visible,.report-submit:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.report-feedback{margin-top:.85rem;font-size:.82rem;padding:.5rem .75rem;border-radius:var(--radius-sm);line-height:1.4}.report-feedback.hidden{display:none}.report-feedback--success{background:var(--diff-insert-bg);color:var(--diff-insert-text)}.report-feedback--error{background:var(--diff-delete-bg);color:var(--diff-delete-text)}.report-toast{position:fixed;bottom:1.5rem;left:50%;transform:translate(-50%) translateY(8px);z-index:1100;background:var(--bg-card);border:1px solid var(--border-input);border-radius:var(--radius-full);padding:.6rem 1.25rem;font-size:.82rem;color:var(--text-secondary);box-shadow:var(--shadow-md);opacity:0;transition:opacity .22s ease,transform .22s ease;pointer-events:none;white-space:nowrap}.report-toast.open{opacity:1;transform:translate(-50%) translateY(0)}@media(max-width:600px){.report-modal{padding:1.35rem;border-radius:var(--radius-md)}.report-actions{flex-direction:column-reverse}.report-cancel,.report-submit{width:100%;text-align:center}}:root{--pron-equal-fg: var(--text-primary);--pron-missed-fg: #f87171;--pron-missed-bg: rgba(248, 113, 113, .13);--pron-extra-fg: #fbbf24;--pron-extra-bg: rgba(251, 191, 36, .12);--record-ring-color: rgba(26, 107, 191, .55);--record-ring-glow: rgba(26, 107, 191, .25);--recording-color: #f87171;--recording-bg: rgba(248, 113, 113, .16);--recording-glow: rgba(248, 113, 113, .35)}@media(prefers-color-scheme:light){:root{--pron-missed-fg: #dc2626;--pron-missed-bg: rgba(220, 38, 38, .09);--pron-extra-fg: #d97706;--pron-extra-bg: rgba(217, 119, 6, .1)}}.practice-speaking-container{display:flex;flex-direction:column;gap:1.5rem;padding-bottom:4rem}.practice-speaking-container .app-header{margin-bottom:1rem}.phrase-section{display:flex;flex-direction:column;gap:.5rem}.phrase-input-wrap{position:relative;display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;gap:.35rem .65rem}.phrase-input{grid-column:1;grid-row:1;width:100%;box-sizing:border-box;padding:.75rem 1rem;font-family:var(--font-sans);font-size:1.125rem;font-weight:400;line-height:1.5;color:var(--text-primary);background:var(--bg-input);border:1.5px solid var(--border-input);border-radius:var(--radius-md);outline:none;transition:border-color var(--transition-fast),box-shadow var(--transition-fast),background 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ease;text-align:center}.demo-phrases.hidden{display:none!important}.demo-phrases-heading{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin:0 0 .6rem}.demo-phrase-grid{display:flex;flex-wrap:balance;gap:.45rem;justify-content:center}.demo-chip{display:inline-flex;align-items:baseline;gap:.35em;padding:.35rem .85rem;border-radius:var(--radius-full);background:var(--bg-card);border:1px solid var(--border-subtle);font-family:var(--font-sans);font-size:.85rem;font-weight:500;color:var(--text-primary);cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),transform var(--transition-fast);-webkit-tap-highlight-color:transparent}.demo-chip:hover{background:var(--bg-card-hover);border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.demo-chip:hover .demo-chip-gloss{color:var(--accent);opacity:.75}.demo-chip-gloss{font-size:.75em;font-weight:400;color:var(--text-muted);font-style:normal;transition:color var(--transition-fast)}.global-play-btn{background:none;border:none;display:inline-flex;align-items:center;gap:.4rem;font-family:var(--font-sans);font-size:.8rem;font-weight:500;color:var(--text-accent);cursor:pointer;padding:.25rem .5rem;border-radius:var(--radius-sm);transition:background var(--transition-fast),opacity var(--transition-fast)}.global-play-btn:hover:not(:disabled){background:var(--bg-badge)}.global-play-btn:disabled{opacity:.5;cursor:not-allowed}.btn-listen-phrase{grid-column:2;grid-row:1;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:.35rem;min-width:5.25rem;height:100%;box-sizing:border-box;padding:.5rem .9rem;background:var(--bg-card);border:1.5px solid var(--border-input);border-radius:var(--radius-md);color:var(--text-primary);cursor:pointer;font-family:var(--font-sans);font-size:.82rem;font-weight:600;letter-spacing:.02em;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:var(--shadow-sm);transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),box-shadow var(--transition-fast),opacity var(--transition-fast);flex-shrink:0;user-select:none;-webkit-tap-highlight-color:transparent}.btn-listen-phrase .tts-icon{width:24px;height:24px}.btn-listen-phrase:hover:not(:disabled){background:var(--bg-card-hover);border-color:var(--border-input-focus);color:var(--text-primary);box-shadow:var(--shadow-md)}.btn-listen-phrase:active:not(:disabled){box-shadow:var(--shadow-sm)}.btn-listen-phrase:disabled{opacity:.35;cursor:not-allowed;border-color:var(--border-input);color:var(--text-muted);background:var(--bg-card);box-shadow:none}.btn-listen-phrase.playing{background:var(--bg-card-hover);border-color:var(--text-primary);color:var(--text-primary)}.btn-listen-phrase.playing .tts-icon{animation:pulse-icon-fade 1s ease-in-out infinite}@keyframes pulse-icon-fade{0%,to{opacity:1}50%{opacity:.35}}.word-badge-wrap{display:flex;align-items:center;gap:.5rem}.word-badge-wrap.hidden{display:none}.word-badge-label{font-size:.72rem;color:var(--text-muted)}.word-badge{display:inline-flex;align-items:center;padding:.2rem .65rem;background:var(--bg-badge);border:1px solid var(--border-subtle);border-radius:var(--radius-full);font-size:.8rem;font-weight:500;color:var(--text-accent);font-family:var(--font-mono)}.record-section{display:flex;flex-direction:column;align-items:center;gap:.85rem;margin-top:1rem}.record-tip{font-size:.76rem;color:var(--text-muted);margin:0;text-align:center}.record-hint{font-size:.78rem;color:var(--text-muted)}@media(pointer:coarse){.record-hint{display:none}}.record-btn-wrap{position:relative;display:inline-flex;align-items:center;justify-content:center}.record-ring{position:absolute;width:142px;height:142px;border-radius:50%;border:2px solid var(--record-ring-color);box-shadow:0 0 8px var(--record-ring-color),0 0 20px var(--record-ring-glow);top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none;opacity:0;transition:opacity var(--transition-normal)}.record-ring.active{opacity:1}.btn-record{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;width:124px;height:124px;border-radius:50%;border:2px solid var(--border-input);background:var(--bg-card);color:var(--text-primary);cursor:pointer;font-family:var(--font-sans);font-size:.82rem;font-weight:600;letter-spacing:.02em;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:background var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform .15s ease,color var(--transition-fast);-webkit-user-select:none;user-select:none;touch-action:none}.btn-record:hover:not(:disabled){background:var(--bg-card-hover);border-color:var(--accent);box-shadow:var(--shadow-glow)}.btn-record:active:not(:disabled){transform:scale(.97)}.btn-record.recording{background:var(--recording-bg);border-color:var(--recording-color);box-shadow:0 0 32px var(--recording-glow);transform:scale(1.05);color:var(--recording-color)}.btn-record:disabled{opacity:.45;cursor:not-allowed}.btn-record.error-flash{border-color:var(--pron-missed-fg);box-shadow:0 0 20px var(--pron-missed-bg)}.btn-record-label{font-size:.82rem;font-weight:600;line-height:1.25;max-width:86px;text-align:center;word-break:break-word}.processing-section{display:flex;flex-direction:column;align-items:center;gap:.75rem;padding:1rem}.processing-section.hidden{display:none}.processing-spinner{width:36px;height:36px;border:3px solid var(--border-subtle);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.processing-label{font-size:.85rem;color:var(--text-secondary)}.warming-msg{font-size:.78rem;color:var(--text-muted);text-align:center;max-width:260px;line-height:1.5;animation:fade-in .4s ease}.warming-msg.hidden{display:none}@keyframes fade-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.attempts-container{display:flex;flex-direction:column;gap:1.25rem;width:100%}.attempt-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-md);display:flex;flex-direction:column;gap:1rem;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.attempt-card:hover{border-color:var(--border-input)}.slide-down-enter{animation:fade-in-card .35s ease-out forwards}@keyframes fade-in-card{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.attempt-section{display:flex;flex-direction:column;gap:.5rem}.attempt-section-label{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin:0}.attempt-analysis-chars{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem .5rem;padding:.15rem 0;line-height:1}.char-word-group{display:inline-flex;flex-wrap:nowrap;gap:3px;align-items:center}.char-space{display:inline-block;width:.45rem}.char-badge{display:inline-flex;align-items:center;justify-content:center;min-width:1.65rem;height:2.1rem;padding:0 .35rem;border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:1.1rem;font-weight:600;box-sizing:border-box;user-select:none;cursor:default}.char-punct{font-family:var(--font-mono);font-size:1.1rem;font-weight:500;color:var(--text-secondary);display:inline-flex;align-items:center;justify-content:center;padding:0 1px;line-height:1;user-select:none;background:none!important;border:none!important}.char-badge.score-excellent{background:#4ade802e;color:#4ade80;border:1px solid rgba(74,222,128,.35)}.char-badge.score-good{background:#a3e6352e;color:#a3e635;border:1px solid rgba(163,230,53,.35)}.char-badge.score-fair{background:#fbbf242e;color:#fbbf24;border:1px solid rgba(251,191,36,.35)}.char-badge.score-poor{background:#f871712e;color:#f87171;border:1px solid rgba(248,113,113,.35)}.char-badge.score-neutral{background:var(--bg-input);color:var(--text-primary);border:1px solid var(--border-subtle)}@media(prefers-color-scheme:light){.char-badge.score-excellent{background:#16a34a1f;color:#15803d;border:1px solid rgba(22,163,74,.28)}.char-badge.score-good{background:#65a30d1f;color:#4d7c0f;border:1px solid rgba(101,163,13,.28)}.char-badge.score-fair{background:#d977061f;color:#b45309;border:1px solid rgba(217,119,6,.28)}.char-badge.score-poor{background:#dc26261f;color:#b91c1c;border:1px solid rgba(220,38,38,.28)}}.attempt-heard-section{padding-top:.85rem;border-top:1px solid var(--border-subtle)}.attempt-heard-row{display:flex;align-items:center;gap:.75rem;min-height:2.2rem}.attempt-heard-row .play-btn{background:var(--bg-card);border:1.5px solid var(--border-input);border-radius:var(--radius-full);width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-primary);opacity:.85;flex-shrink:0;padding:0;transition:background var(--transition-fast),border-color var(--transition-fast),opacity var(--transition-fast)}.attempt-heard-row .play-btn:hover:not(:disabled){background:var(--bg-card-hover);border-color:var(--border-input-focus);opacity:1}.attempt-heard-row .play-btn.playing{opacity:1;color:var(--text-primary)}.attempt-heard-row .diff-text{font-size:1.15rem;font-weight:500;line-height:1.5;word-break:break-word}.diff-equal{color:var(--pron-equal-fg)}.diff-missed{color:var(--pron-missed-fg);background:var(--pron-missed-bg);border-radius:3px;padding:0 2px;text-decoration:line-through;opacity:.85}.diff-extra{color:var(--pron-extra-fg);background:var(--pron-extra-bg);border-radius:3px;padding:0 2px}.diff-empty{color:var(--text-muted);font-style:italic}.feedback-legend{display:flex;gap:1.25rem;flex-wrap:wrap}.legend-item{display:flex;align-items:center;gap:.4rem;font-size:.72rem;color:var(--text-secondary)}.legend-dot{width:9px;height:9px;border-radius:2px;flex-shrink:0}.legend-dot--equal{background:var(--text-muted)}.legend-dot--missed{background:var(--pron-missed-fg)}.legend-dot--extra{background:var(--pron-extra-fg)}@media(max-width:600px){.phrase-card{padding:1.25rem}}.hidden{display:none!important}.toast{position:fixed;bottom:2rem;left:50%;transform:translate(-50%) translateY(1rem);background:var(--accent);border:none;color:#fff;font-family:var(--font-sans);font-size:.875rem;font-weight:500;padding:.65rem 1.25rem;border-radius:var(--radius-full);box-shadow:0 4px 20px #0000004d;opacity:0;pointer-events:none;max-width:calc(100vw - 1rem);white-space:normal;text-align:center;transition:opacity .2s ease,transform .2s ease;z-index:100}.toast--visible{opacity:1;transform:translate(-50%) translateY(0)}