:root{--bg:#f8f6f1;--bg-alt:#efebe4;--surface:#fff;--surface-hover:#f5f2eb;--text:#1a1a1e;--text-dim:#63636b;--text-muted:#8f8f96;--text-inverse:#fff;--accent:#b5673a;--accent-hover:#9e582f;--accent-soft:#f0dccd;--accent-glow:rgba(181,103,58,.18);--surface-inverse:#1a1a1e;--header-bg:hsla(0,0%,100%,.8);--secondary:#5a7a8a;--secondary-soft:#d6e4ea;--correct:#3a8f75;--correct-soft:#d4e8df;--wrong:#b85a4a;--wrong-soft:#f0d6cf;--warn:#b58a30;--warn-soft:#f2e6c8;--border:rgba(26,26,30,.08);--border-accent:rgba(181,103,58,.25);--radius:12px;--radius-lg:16px;--shadow-sm:0 1px 2px rgba(0,0,0,.04);--shadow-md:0 4px 12px rgba(0,0,0,.05);--shadow-lg:0 8px 32px rgba(0,0,0,.06)}@media (prefers-color-scheme:dark){:root{--bg:#131214;--bg-alt:#1c1b1e;--surface:#242326;--surface-hover:#2c2b2e;--text:#e8e6de;--text-dim:#9a98a0;--text-muted:#7a7880;--text-inverse:#d4d4d8;--accent:#d4864f;--accent-hover:#e0915a;--accent-soft:rgba(212,134,79,.18);--accent-glow:rgba(212,134,79,.25);--secondary:#5a8a9a;--secondary-soft:rgba(90,138,154,.18);--correct:#4dba97;--correct-soft:rgba(77,186,151,.2);--wrong:#d47a6a;--wrong-soft:hsla(9,55%,62%,.2);--warn:#d4b04a;--warn-soft:rgba(212,176,74,.2);--border:hsla(0,0%,100%,.08);--border-accent:rgba(212,134,79,.25);--shadow-sm:0 1px 3px rgba(0,0,0,.3);--shadow-md:0 4px 12px rgba(0,0,0,.35);--shadow-lg:0 8px 32px rgba(0,0,0,.4);--header-bg:rgba(19,18,20,.88)}}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased;transition:background .3s ease,color .3s ease}a{color:var(--accent);text-decoration:none;transition:color .15s}a:hover{color:var(--accent-hover)}.container{max-width:900px;margin:0 auto;padding:0 1.25rem;width:100%}.container-narrow{max-width:720px;margin:0 auto;padding:0 1.25rem 2rem;width:100%}.section{margin-bottom:2rem}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:100;background:var(--header-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.site-header .container{display:flex;align-items:center;justify-content:space-between;padding-top:0;padding-bottom:0;height:60px;position:relative}.site-logo{display:flex;align-items:center;gap:.5rem;font-size:1.15rem;font-weight:700;color:var(--text)}.site-logo:hover{color:var(--accent)}.hamburger{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:36px;height:36px;border:1px solid var(--border);background:var(--surface);border-radius:10px;cursor:pointer;transition:all .2s;padding:0;z-index:110}.hamburger:hover{border-color:var(--accent)}.hamburger-bar{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:all .25s cubic-bezier(.4,0,.2,1);transform-origin:center}.hamburger--open .hamburger-bar:first-child{transform:translateY(7px) rotate(45deg)}.hamburger--open .hamburger-bar:nth-child(2){opacity:0;transform:scaleX(0)}.hamburger--open .hamburger-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.menu-panel{position:absolute;top:calc(100% + 6px);right:0;min-width:220px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:0 8px 32px rgba(0,0,0,.08);z-index:100;max-height:min(480px,calc(100vh - 100px));overflow-y:auto;transform:translateY(-6px);opacity:0;pointer-events:none;transition:all .2s cubic-bezier(.16,1,.3,1)}.menu-panel--open{transform:translateY(0);opacity:1;pointer-events:auto}.menu-nav{padding:.4rem}.menu-section-label{font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);padding:.5rem .6rem .25rem}.menu-link{display:block;padding:.4rem .6rem;border-radius:8px;font-size:.85rem;font-weight:500;color:var(--text);transition:all .15s;white-space:nowrap}.menu-link:hover{background:var(--bg-alt);color:var(--accent)}.menu-link--active{background:var(--accent-soft);color:var(--accent);font-weight:700}.hero{text-align:center;padding:3rem 1rem 2rem;position:relative;overflow:hidden}.hero-badge{display:inline-flex;align-items:center;gap:.35rem;background:var(--accent-hover);color:#fff;font-size:.8rem;font-weight:600;padding:.3rem 1rem;border-radius:100px;margin-bottom:1.25rem}.hero h1{font-size:2.4rem;font-weight:800;line-height:1.15;margin-bottom:.75rem;color:var(--text)}.hero p{color:var(--text-dim);font-size:1.05rem;max-width:560px;margin:0 auto 1.5rem;line-height:1.7}.hero-cta{display:inline-flex;align-items:center;gap:.5rem;color:#fff!important;font-size:.95rem;font-weight:600;padding:.8rem 1.8rem;border-radius:9999px;transition:all .2s}.hero-cta,.hero-cta:hover{background:var(--accent-hover)}.hero-cta:hover{transform:translateY(-1px);box-shadow:0 4px 16px var(--accent-glow)}.section-title{text-align:center;margin-bottom:1.5rem}.section-title h2{font-size:1.4rem;font-weight:700;margin-bottom:.35rem;color:var(--text)}.section-title p{color:var(--text-dim);font-size:.9rem;max-width:480px;margin:0 auto;line-height:1.6}.home-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:1.25rem;gap:1.25rem;align-items:stretch}.mode-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.4rem;min-height:150px;cursor:pointer;transition:all .25s ease;display:flex;flex-direction:column}.mode-card:hover{border-color:var(--border-accent);background:var(--surface);transform:translateY(-2px);box-shadow:0 12px 28px -10px rgba(0,0,0,.08)}.mode-card .icon{font-size:1.8rem;margin-bottom:.5rem}.mode-card h2{font-size:.95rem;font-weight:700;margin-bottom:.25rem;color:var(--text)}.mode-card p{font-size:.83rem;color:var(--text-dim);line-height:1.6;flex:1 1}.mode-card .card-tag{display:inline-block;font-size:.68rem;font-weight:600;padding:.2rem .7rem .4rem;border-radius:100px;margin-top:.75rem;align-self:flex-start;background:#fff;color:#1a1a1a;border:1px solid rgba(26,26,30,.5)}.steps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));grid-gap:1rem;gap:1rem}.step-card{text-align:center;padding:1.5rem 1rem}.step-number{width:38px;height:38px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-weight:800;font-size:1rem;display:flex;align-items:center;justify-content:center;margin:0 auto .65rem}.step-card h3{font-size:.9rem;margin-bottom:.3rem}.step-card p{font-size:.82rem;color:var(--text-dim);line-height:1.6}.seo-text{padding:2rem 0}.seo-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem 1.5rem;margin-bottom:1.5rem;box-shadow:var(--shadow-sm)}.seo-text h2{font-size:1.2rem;font-weight:700;margin-bottom:.65rem;color:var(--text)}.seo-text h3{font-size:1rem;font-weight:600;margin:1.25rem 0 .4rem;color:var(--text)}.seo-text p{font-size:.88rem;color:var(--text-dim);line-height:1.7;margin-bottom:.75rem}.seo-text ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));grid-gap:.5rem;gap:.5rem;margin:.75rem 0}.seo-text ul li{font-size:.88rem;padding:.4rem .7rem;background:var(--surface);border:1px solid var(--border);border-radius:8px;color:var(--text-dim)}.site-footer{margin-top:auto;background:var(--surface-inverse);color:#d4d4d8;padding:2.5rem 1.25rem 1.25rem}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-gap:2rem;gap:2rem;margin-bottom:1.5rem}.footer-brand h3{font-size:1rem;font-weight:700;color:#fff;margin-bottom:.4rem}.footer-brand p{font-size:.82rem;line-height:1.6;color:#a1a1aa}.footer-col h4{color:#fff;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.6rem}.footer-col a{display:block;color:#a1a1aa;font-size:.82rem;padding:.5rem 0;line-height:1.2;min-height:44px;transition:color .15s}.footer-col a:hover{color:#fff}.footer-bottom{border-top:1px solid hsla(0,0%,100%,.08);padding-top:1rem;display:flex;justify-content:space-between;align-items:center;font-size:.78rem;color:#a1a1aa}.footer-bottom a{display:inline;color:#a1a1aa}.footer-bottom a:hover{color:#fff}.cookie-banner{position:fixed;bottom:0;left:0;right:0;background:var(--surface-inverse);color:#fff;padding:.9rem 1.25rem;z-index:999;animation:slideUp .3s ease-out}.cookie-banner .container{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.cookie-banner p{font-size:.83rem;line-height:1.5;flex:1 1;min-width:200px}.cookie-banner a{color:#ffb783;text-decoration:underline;text-underline-offset:2px}.cookie-banner a:hover{color:#fff}.cookie-btn{color:#fff;border:none;padding:.45rem 1.25rem;border-radius:9999px;font-size:.83rem;font-weight:600;cursor:pointer;white-space:nowrap;transition:background .15s}.cookie-btn,.cookie-btn:hover{background:var(--accent-hover)}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.page-header{padding:2rem 0 1.5rem}.page-header h1{font-size:1.6rem;font-weight:800;margin-bottom:.4rem;color:var(--text)}.page-header .back-link{display:inline-flex;align-items:center;gap:.3rem;color:var(--text-dim);font-size:.85rem;margin-bottom:.75rem}.page-header .back-link:hover{color:var(--text)}.header{display:flex;align-items:center;justify-content:space-between;padding:.85rem 0;border-bottom:1px solid var(--border);margin-bottom:1.25rem}.header h1{font-size:1.15rem;font-weight:700;color:var(--text)}.header nav{display:flex;gap:.65rem}.header nav a{padding:.3rem .75rem;border-radius:9999px;font-size:.82rem;background:var(--surface);color:var(--text-dim);border:1px solid var(--border);transition:all .15s}.header nav a:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.legal-content h2{font-size:1.15rem;font-weight:700;margin:1.25rem 0 .4rem;color:var(--text)}.legal-content h3{font-size:.95rem;font-weight:600;margin:1rem 0 .3rem;color:var(--text)}.legal-content p{font-size:.88rem;color:var(--text-dim);line-height:1.7;margin-bottom:.65rem}.legal-content ul{padding-left:1.5rem;margin-bottom:.65rem}.legal-content ul li{font-size:.88rem;color:var(--text-dim);line-height:1.7;margin-bottom:.2rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-bottom:1rem;box-shadow:var(--shadow-sm)}.card h2{font-size:1.1rem;margin-bottom:.4rem;color:var(--text)}.card p{color:var(--text-dim);font-size:.88rem;line-height:1.6}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.65rem 1.35rem;border:none;border-radius:9999px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .15s;line-height:1}.btn-primary{background:var(--accent-hover);color:#fff;box-shadow:0 0 10px var(--accent-glow)}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--surface-hover);border-color:var(--text-dim)}.btn-outline{background:transparent;color:var(--accent);border:1px solid var(--accent)}.btn-outline:hover{background:var(--accent-soft)}.speech-result{padding:1.25rem;border-radius:var(--radius);font-size:1rem;line-height:1.7;margin:1rem 0;white-space:pre-wrap}.speech-result.correct{background:var(--correct-soft);color:var(--correct)}.speech-result.incorrect{background:var(--wrong-soft);color:var(--wrong)}.word-feedback{display:flex;flex-wrap:wrap;gap:.35rem;padding:1rem;border-radius:var(--radius);margin:.75rem 0;background:var(--bg-alt)}.word-tag{padding:.15rem .5rem;border-radius:6px;font-size:.9rem;font-weight:500}.word-correct{background:var(--correct-soft);color:var(--correct)}.word-incorrect{background:var(--wrong-soft);color:var(--wrong)}.word-skipped{background:var(--warn-soft);color:var(--warn)}.sentence-block{padding:1rem;border-radius:var(--radius);margin-bottom:.75rem}.sentence-block h4{font-size:.85rem;font-weight:600;margin-bottom:.35rem}.topic-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));grid-gap:.85rem;gap:.85rem}.topic-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.15rem;cursor:pointer;transition:all .2s ease;text-align:left}.topic-card:hover{border-color:var(--border-accent);transform:translateY(-2px);box-shadow:0 8px 20px -8px rgba(0,0,0,.06)}.topic-card h3{font-size:.95rem;font-weight:700;margin-bottom:.2rem;color:var(--text)}.topic-card p{font-size:.82rem;color:var(--text-dim);line-height:1.5}.progress-bar{height:6px;border-radius:9999px;background:var(--bg-alt);overflow:hidden;margin:.5rem 0}.progress-fill{height:100%;border-radius:9999px;background:var(--accent);transition:width .3s ease}.error-text{color:var(--wrong);font-size:.85rem}.success-text{color:var(--correct);font-size:.85rem}.muted-text{color:var(--text-dim);font-size:.85rem}.loading-spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.sentence-display{font-size:1.15rem;line-height:1.7;padding:1rem 1.25rem;border-radius:var(--radius);background:var(--bg-alt);border:1px solid var(--border)}.feedback-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem;box-shadow:var(--shadow-sm);animation:feedbackFadeIn .3s ease-out}@keyframes feedbackFadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.feedback-score{display:flex;align-items:center;gap:1.25rem;margin-bottom:1rem}.feedback-ring{display:block}.feedback-ring-fill{transition:stroke-dashoffset .6s ease}.feedback-stats{display:flex;align-items:center;gap:.75rem}.stat{text-align:center}.stat-value{display:block;font-size:1.15rem;font-weight:800;line-height:1}.stat-label{display:block;font-size:.68rem;font-weight:600;color:var(--text-muted);margin-top:.15rem}.stat-correct .stat-value{color:var(--correct)}.stat-wrong .stat-value{color:var(--wrong)}.stat-missing .stat-value{color:var(--warn)}.stat-divider{width:1px;height:28px;background:var(--border)}.word-pills{display:flex;flex-wrap:wrap;gap:.35rem;margin-bottom:.75rem}.pill{display:inline-block;padding:.25rem .55rem;border-radius:8px;font-size:.9rem;font-weight:600;line-height:1.3}.pill-correct{background:var(--correct-soft);color:var(--correct)}.pill-wrong{background:var(--wrong-soft);color:var(--wrong)}.pill-missing{background:var(--warn-soft);color:var(--warn)}.feedback-quote{display:flex;align-items:flex-start;gap:.5rem;padding:.65rem .8rem;background:var(--bg-alt);border-radius:var(--radius);margin-bottom:.5rem}.feedback-transcript{margin:0;font-size:.88rem;color:var(--text-dim);font-style:italic;line-height:1.5;word-break:break-word}.feedback-tip{display:flex;align-items:flex-start;gap:.45rem;padding:.6rem .8rem;background:var(--accent-soft);border-radius:var(--radius)}.tip-icon{font-size:1rem;flex-shrink:0;margin-top:1px}.feedback-tip p{margin:0;font-size:.85rem;color:var(--accent);line-height:1.5}.score-bar{display:flex;justify-content:center;align-items:center;gap:1.5rem;margin:.75rem 0}.score-item{text-align:center}.score-bar .value{display:block;font-size:1.5rem;font-weight:800;line-height:1}.score-bar .label{display:block;font-size:.72rem;font-weight:600;color:var(--text-muted);margin-top:.15rem}.feedback-detail{padding:.65rem .8rem;border-radius:var(--radius);background:var(--bg-alt);margin-bottom:.5rem}.feedback-detail h4{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.25rem}.seo-content{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem 2.5rem;box-shadow:var(--shadow-sm)}.seo-content h2{font-size:1.2rem;margin-bottom:1rem}.seo-content h2,.seo-content h3{font-weight:700;color:var(--text)}.seo-content h3{font-size:1.05rem;margin-top:1.5rem;margin-bottom:.75rem}.seo-content p{line-height:1.75}.seo-content ol,.seo-content p,.seo-content ul{font-size:.9rem;color:var(--text-dim);margin-bottom:1rem}.seo-content ol,.seo-content ul{line-height:1.8;padding-left:1.5rem}.seo-content li{margin-bottom:.35rem}.seo-content strong{color:var(--text)}.faq-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem 2rem}.faq-section summary::marker{display:none;content:""}@media (max-width:640px){.faq-section,.seo-content{padding:1.25rem 1.5rem}}.install-banner{position:fixed;left:50%;bottom:16px;transform:translateX(-50%);z-index:9999;display:flex;align-items:center;gap:12px;max-width:92vw;width:420px;padding:12px 14px;background:var(--surface);border:1px solid var(--accent-soft);border-radius:14px;box-shadow:0 8px 28px rgba(0,0,0,.14);animation:sn-slide-up .35s ease}@keyframes sn-slide-up{0%{opacity:0;transform:translate(-50%,16px)}to{opacity:1;transform:translate(-50%)}}.install-banner__icon{font-size:28px;line-height:1;flex-shrink:0}.install-banner__text{display:flex;flex-direction:column;gap:2px;font-size:13px;line-height:1.3;color:var(--text);flex:1 1;min-width:0}.install-banner__text strong{font-size:14px}.install-banner__text span{color:var(--text-muted)}.install-banner__btn{flex-shrink:0;background:var(--accent);color:#fff;border:none;border-radius:10px;padding:8px 14px;font-size:13px;font-weight:600;cursor:pointer;transition:background .15s}.install-banner__btn:hover{background:var(--accent-hover)}.install-banner__close{flex-shrink:0;background:transparent;border:none;color:var(--text-muted);font-size:16px;cursor:pointer;padding:4px;line-height:1}.install-banner__close:hover{color:var(--text)}@media (max-width:480px){.install-banner{width:auto;left:12px;right:12px;transform:none}@keyframes sn-slide-up{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}}@media (prefers-color-scheme:dark){.mode-card .card-tag{background:var(--surface);color:var(--text);border:1px solid var(--border)}}