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ease}.main-image.svelte-uwelkw:hover{transform:scale(1.05)}.image-glow.svelte-uwelkw{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:80%;height:80%;background:var(--purple);filter:blur(60px);opacity:.2;z-index:-1}.controls-container.svelte-uwelkw{display:flex;gap:2rem;justify-content:center;flex-wrap:wrap}.modern-toggle-btn.svelte-uwelkw{position:relative;display:flex;align-items:center;gap:1rem;padding:1.2rem 2.5rem;background:var(--purple);color:var(--background);border:none;border-radius:50px;font-size:1.7rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:var(--card-shadow);overflow:hidden}.modern-toggle-btn.svelte-uwelkw:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s}.modern-toggle-btn.svelte-uwelkw:hover:before{left:100%}.modern-toggle-btn.svelte-uwelkw:hover{transform:translateY(-3px);box-shadow:var(--card-hover-shadow)}.toggle-icon.svelte-uwelkw{font-size:2rem;font-weight:700}.toggle-indicator.svelte-uwelkw{position:absolute;bottom:-8px;left:50%;transform:translate(-50%);width:30px;height:3px;background:var(--orange);border-radius:3px;opacity:0;transition:all .3s ease}.toggle-indicator.active.svelte-uwelkw{opacity:1;box-shadow:0 0 10px var(--orange)}.content-card.svelte-uwelkw{background:var(--white-black);border-radius:24px;padding:3rem;margin:4rem auto;box-shadow:var(--card-shadow);border:1px solid var(--border-color);transition:all .3s ease;position:relative}.content-card.svelte-uwelkw:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--purple);border-radius:24px 24px 0 0}.content-card.svelte-uwelkw:hover{transform:translateY(-5px);box-shadow:var(--card-hover-shadow)}.card-title.svelte-uwelkw{text-align:center;font-size:2.8rem;color:var(--font-color);margin:0 0 3rem;font-weight:800;background:linear-gradient(135deg,var(--purple) 0%,var(--pink) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.formal-section.svelte-uwelkw:before{background:var(--blue)}.audio-control.svelte-uwelkw{display:flex;justify-content:center;margin:2rem 0}.pronunciation-showcase.svelte-uwelkw{text-align:center;margin:3rem 0}.intro-text.svelte-uwelkw{font-size:2.2rem;color:var(--font-color);margin-bottom:1rem;line-height:1.6;font-weight:600}.intro-subtext.svelte-uwelkw{font-size:1.8rem;color:var(--text-secondary);margin-bottom:3rem;line-height:1.7}.word-display.svelte-uwelkw{position:relative;display:inline-block;margin:3rem 0}.japanese-word.svelte-uwelkw{font-size:3rem;font-weight:900;border-radius:.8rem;background:linear-gradient(135deg,var(--purple) 0%,var(--pink) 100%);padding:1rem 3rem;position:relative;z-index:1}.japanese-word.formal.svelte-uwelkw{background:linear-gradient(135deg,var(--blue) 0%,var(--cyan) 100%)}.japanese-word-large.svelte-uwelkw{font-size:4rem;font-weight:900;background:linear-gradient(135deg,var(--red) 0%,var(--orange) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;padding:1.5rem 4rem;position:relative;z-index:1}.word-shadow.svelte-uwelkw{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:100%;height:100%;background:var(--purple);filter:blur(30px);opacity:.2;z-index:0}.word-glow-large.svelte-uwelkw{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:100%;height:100%;background:var(--red);filter:blur(30px);opacity:.2;z-index:0}.inline-japanese.svelte-uwelkw{padding:.4rem .8rem;background:var(--background-secondary);border-radius:8px;font-weight:700;color:var(--font-color);transition:all .3s ease;border:1px solid var(--border-color)}.inline-japanese.svelte-uwelkw:hover{background:var(--purple);color:var(--background);transform:scale(1.05)}.inline-japanese.white.svelte-uwelkw{color:#fff;background:#ffffff1a;border-color:#ffffff4d}.explanation-section.svelte-uwelkw{margin-top:3rem}.tip-card.svelte-uwelkw{display:flex;align-items:flex-start;gap:2rem;background:var(--background-secondary);padding:2.5rem;border-radius:20px;margin:3rem 0;border-left:4px solid var(--purple);box-shadow:var(--box-shadow);transition:all .3s ease}.tip-card.svelte-uwelkw:hover{transform:translateY(-3px);box-shadow:var(--card-shadow)}.tip-icon.svelte-uwelkw{width:50px;height:50px;background:var(--purple);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2.4rem;flex-shrink:0;color:var(--background)}.tip-content.svelte-uwelkw h4:where(.svelte-uwelkw){margin:0 0 1rem;font-size:1.8rem;font-weight:700;color:var(--font-color)}.tip-content.svelte-uwelkw p:where(.svelte-uwelkw){margin:0;font-size:1.8rem;color:var(--text-secondary);line-height:1.6}.section-title.svelte-uwelkw{font-size:2.4rem;color:var(--font-color);text-align:center;margin-bottom:2rem;font-weight:800;background:linear-gradient(135deg,var(--purple) 0%,var(--pink) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.section-intro.svelte-uwelkw{font-size:1.8rem;line-height:1.7;color:var(--text-secondary);text-align:center;margin-bottom:3rem}.variations-grid.svelte-uwelkw{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin:3rem 0}.variation-card.svelte-uwelkw{background:var(--white-black);border-radius:20px;padding:2.5rem;box-shadow:var(--card-shadow);text-align:center;transition:all .3s ease;border:1px solid var(--border-color)}.variation-card.svelte-uwelkw:hover{transform:translateY(-5px);box-shadow:var(--card-hover-shadow)}.variation-word.svelte-uwelkw{font-size:2.2rem;font-weight:900;margin-bottom:1.5rem}.japanese-text.svelte-uwelkw{background:linear-gradient(135deg,var(--blue) 0%,var(--cyan) 100%);-webkit-background-clip:text;background-clip:text}.particle.svelte-uwelkw{background:linear-gradient(135deg,var(--pink) 0%,var(--orange) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-left:.2rem}.particle.polite.svelte-uwelkw{background:linear-gradient(135deg,var(--purple) 0%,var(--red) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.variation-description.svelte-uwelkw{font-size:1.7rem;color:var(--text-secondary);line-height:1.6;margin-top:1.5rem}.info-box.svelte-uwelkw{background:var(--background-secondary);border-left:4px solid var(--pink);padding:2rem;border-radius:12px;margin-top:2rem;box-shadow:var(--box-shadow)}.info-box.svelte-uwelkw h4:where(.svelte-uwelkw){margin:0 0 1.5rem;font-size:2.2rem;font-weight:700;color:var(--font-color)}.info-box.svelte-uwelkw p:where(.svelte-uwelkw){margin:0 0 1.5rem;font-size:1.8rem;line-height:1.6;color:var(--text-secondary)}.info-box.svelte-uwelkw p:where(.svelte-uwelkw):last-child{margin-bottom:0}.particle-highlight.svelte-uwelkw{padding:.2rem .6rem;background:var(--pink);border-radius:6px;font-weight:700;color:var(--background)}.explanation-box.svelte-uwelkw{background:var(--background-secondary);border-radius:15px;padding:2.5rem;margin:3rem 0;box-shadow:var(--box-shadow)}.explanation-box.svelte-uwelkw p:where(.svelte-uwelkw){font-size:1.8rem;color:var(--text-secondary);line-height:1.7;margin-bottom:1.5rem}.explanation-box.svelte-uwelkw p:where(.svelte-uwelkw):last-child{margin-bottom:0}.warning-text.svelte-uwelkw{color:var(--red)!important;font-weight:600}.when-to-use.svelte-uwelkw{text-align:center;margin:3rem 0}.when-to-use.svelte-uwelkw p:where(.svelte-uwelkw){font-size:1.8rem;color:var(--text-secondary);margin-bottom:2rem}.story-box.svelte-uwelkw{background:var(--background-secondary);border-radius:20px;padding:3rem;margin:3rem 0;border-left:4px solid var(--yellow);box-shadow:var(--box-shadow)}.story-box.svelte-uwelkw h4:where(.svelte-uwelkw){font-size:2rem;color:var(--font-color);margin:0 0 2rem;text-align:center;font-weight:800}.story-box.svelte-uwelkw p:where(.svelte-uwelkw){font-size:1.8rem;color:var(--text-secondary);line-height:1.7;margin-bottom:1.5rem}.story-note.svelte-uwelkw{font-weight:700;margin-top:2rem!important;text-align:center;font-size:1.9rem!important;color:var(--font-color)!important}.pronunciation-guide.svelte-uwelkw{text-align:center;margin:1.5rem 0}.casual-pronunciation.svelte-uwelkw{font-size:2.5rem;font-weight:900;background:linear-gradient(135deg,var(--blue) 0%,var(--cyan) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;padding:1rem 2rem}.term-badge.svelte-uwelkw{display:inline-block;padding:.4rem 1rem;background:var(--blue);color:var(--background);border-radius:20px;font-weight:700;font-size:.9em;margin:0 .5rem;box-shadow:var(--box-shadow)}.term-badge.keigo.svelte-uwelkw{background:var(--purple)}.term-badge.white.svelte-uwelkw{background:#fff3;color:#fff}.featured-word.svelte-uwelkw{position:relative;display:inline-block;margin:2rem 0;text-align:center;width:100%}.situations-section.svelte-uwelkw{margin-top:6rem;position:relative}.section-header.svelte-uwelkw{text-align:center;font-size:3rem;color:var(--font-color);margin-bottom:4rem;display:flex;align-items:center;justify-content:center;gap:2rem;font-weight:800}.header-text.svelte-uwelkw{background:linear-gradient(135deg,var(--purple) 0%,var(--pink) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-icon.svelte-uwelkw{font-size:2.5rem;animation:svelte-uwelkw-bounce 2s infinite}@keyframes svelte-uwelkw-bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.situations-grid.svelte-uwelkw{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:3rem}.situation-card.svelte-uwelkw{position:relative;cursor:pointer;transition:transform .4s cubic-bezier(.34,1.56,.64,1)}.card-inner.svelte-uwelkw{position:relative;background:var(--white-black);border-radius:24px;overflow:hidden;box-shadow:var(--card-shadow);border:1px solid var(--border-color);transition:all .3s ease}.card-inner.svelte-uwelkw:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,#9333ea0d,#ec48990d);opacity:0;transition:opacity .3s ease;pointer-events:none}.situation-card.svelte-uwelkw:hover{transform:translateY(-8px) scale(1.02)}.situation-card.svelte-uwelkw:hover .card-inner:where(.svelte-uwelkw){box-shadow:var(--card-hover-shadow);border-color:var(--purple)}.situation-card.svelte-uwelkw:hover .card-inner:where(.svelte-uwelkw):before{opacity:1}.card-image-wrapper.svelte-uwelkw{position:relative;height:260px;background:var(--background-secondary);display:flex;align-items:center;justify-content:center;overflow:hidden}.apology-rays.svelte-uwelkw{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,transparent 0%,rgba(147,51,234,.1) 50%,transparent 100%);background-size:100% 200%;animation:svelte-uwelkw-rays-move 8s ease-in-out infinite;pointer-events:none}@keyframes svelte-uwelkw-rays-move{0%,to{background-position:0% 0%}50%{background-position:0% 100%}}.card-image-wrapper.svelte-uwelkw img:where(.svelte-uwelkw){width:90%;max-width:34rem;height:22rem;-o-object-fit:contain;object-fit:contain;filter:drop-shadow(0 8px 16px rgba(0,0,0,.1));transition:all .4s cubic-bezier(.34,1.56,.64,1);position:relative;z-index:2}.situation-card.svelte-uwelkw:hover .card-image-wrapper:where(.svelte-uwelkw) img:where(.svelte-uwelkw){transform:scale(1.08) translateY(-4px);filter:drop-shadow(0 12px 24px rgba(0,0,0,.15))}.usage-badge.svelte-uwelkw{position:absolute;bottom:1rem;right:1rem;padding:.6rem 1.2rem;border-radius:16px;font-size:1.2rem;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:#fff;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:all .3s ease;z-index:3;opacity:.9;box-shadow:var(--box-shadow)}.usage-badge.casual.svelte-uwelkw{background:var(--blue)}.usage-badge.serious.svelte-uwelkw{background:var(--purple)}.usage-badge.friendly.svelte-uwelkw{background:var(--pink)}.usage-badge.polite.svelte-uwelkw{background:var(--cyan)}.situation-card.svelte-uwelkw:hover .usage-badge:where(.svelte-uwelkw){opacity:1;transform:translateY(-2px)}.card-content.svelte-uwelkw{padding:2rem 1.5rem;background:var(--white-black);text-align:center}.situation-text.svelte-uwelkw{font-size:1.7rem;color:var(--font-color);font-weight:600;margin:0;transition:all .3s ease}.situation-card.svelte-uwelkw:hover .situation-text:where(.svelte-uwelkw){color:var(--purple);transform:translateY(-1px)}.summary-card.svelte-uwelkw{background:linear-gradient(135deg,var(--purple) 0%,var(--pink) 100%);color:#fff;padding:4rem;border-radius:24px;margin:6rem auto;box-shadow:var(--card-shadow);position:relative;overflow:hidden}.summary-card.svelte-uwelkw:before{content:"";position:absolute;top:-50%;right:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.1) 0%,transparent 70%);animation:svelte-uwelkw-rotate 20s linear infinite}@keyframes svelte-uwelkw-rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.summary-title.svelte-uwelkw{text-align:center;font-size:2.8rem;margin-bottom:3rem;font-weight:800;position:relative;z-index:1}.summary-content.svelte-uwelkw{display:grid;gap:2rem;position:relative;z-index:1}.rule-item.svelte-uwelkw{display:flex;align-items:center;gap:2rem;padding:2rem;background:#00000040;border-radius:16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);transition:all .3s ease}.rule-item.svelte-uwelkw:hover{background:#00000059;transform:translateY(-2px)}.rule-icon.svelte-uwelkw{font-size:3rem;width:60px;height:60px;display:flex;align-items:center;justify-content:center;background:#fff3;border-radius:50%;flex-shrink:0}.rule-text.svelte-uwelkw{flex:1;font-size:1.7rem;line-height:1.6}.fun-fact-section.svelte-uwelkw{background:linear-gradient(135deg,#1a1a2e,#16213e);color:#fff;padding:4rem;border-radius:24px;margin:6rem auto;overflow:hidden;position:relative;box-shadow:var(--card-shadow)}.fun-fact-section.svelte-uwelkw:before{content:"";position:absolute;top:-50%;right:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.05) 0%,transparent 70%);animation:svelte-uwelkw-rotate 30s linear infinite}.fact-header.svelte-uwelkw{display:flex;align-items:center;gap:1.5rem;margin-bottom:3rem;position:relative;z-index:1}.fact-icon.svelte-uwelkw{font-size:3rem;animation:svelte-uwelkw-pulse 2s infinite}@keyframes svelte-uwelkw-pulse{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}.fact-header.svelte-uwelkw h3:where(.svelte-uwelkw){font-size:2.5rem;margin:0;font-weight:800;color:#fff}.fact-content.svelte-uwelkw{display:grid;grid-template-columns:1fr;gap:3rem;align-items:center;position:relative;z-index:1}.fact-image.svelte-uwelkw{width:100%;max-width:18rem;margin:0 auto}.fact-text.svelte-uwelkw{text-align:center}.fact-text.svelte-uwelkw p:where(.svelte-uwelkw){font-size:1.8rem;line-height:1.8;margin-bottom:2rem;color:var(--black-white)}.done.svelte-uwelkw{display:inline-flex;align-items:center;justify-content:center;width:16rem;padding:1.5rem 0;background:linear-gradient(135deg,var(--purple) 0%,var(--pink) 100%);color:var(--background);font-size:1.8rem;font-weight:700;border-radius:50px;box-shadow:var(--card-shadow);cursor:pointer;text-decoration:none;margin:6rem auto 0;transition:all .3s ease;position:relative;overflow:hidden}.done.svelte-uwelkw:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s}.done.svelte-uwelkw:hover:before{left:100%}.done.svelte-uwelkw:hover{transform:translateY(-3px);box-shadow:var(--card-hover-shadow)}.center.svelte-uwelkw{text-align:center}@media (min-width: 768px){.fact-content.svelte-uwelkw{grid-template-columns:1fr 2fr}.situations-grid.svelte-uwelkw{grid-template-columns:repeat(2,1fr)}.variations-grid.svelte-uwelkw{grid-template-columns:repeat(3,1fr)}}@media (min-width: 992px){.situations-grid.svelte-uwelkw{grid-template-columns:repeat(3,1fr)}}@media (max-width: 768px){.container.svelte-uwelkw{padding:1.5rem}.main-image.svelte-uwelkw{max-width:26rem}.japanese-word.svelte-uwelkw{font-size:2.6rem;padding:.8rem 2rem}.content-card.svelte-uwelkw{padding:2.5rem}.section-header.svelte-uwelkw{font-size:2.4rem;flex-direction:column;gap:1rem}.summary-card.svelte-uwelkw,.fun-fact-section.svelte-uwelkw{padding:2.5rem}.rule-item.svelte-uwelkw{flex-direction:column;text-align:center;gap:1rem}.variations-grid.svelte-uwelkw{grid-template-columns:1fr}}@keyframes svelte-uwelkw-transitionIn{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}