.layout-container{display:grid;grid-template-columns:1fr;gap:1.5rem}.left-column{width:100%}@media(min-width:1024px){.layout-container{grid-template-columns:1fr 320px;gap:1.5rem}}.hero-section{display:flex;align-items:center;justify-content:space-between;margin-bottom:3rem;padding:3rem 2rem;background-color:#f9fafb;border-radius:.375rem;border:1.5px solid rgba(229,231,235,.8);position:relative;overflow:hidden}.hero-content{position:relative;z-index:1}.hero-title{font-size:2.5rem;font-weight:700;color:#111827;margin:0 0 .5rem;letter-spacing:.02em}.hero-subtitle{font-size:1rem;color:#6b7280;margin:0;font-weight:500}.stats-badge{display:inline-flex;align-items:baseline;gap:.5rem;padding:.625rem 1.5rem;background-color:#fff;border-radius:9999px;border:1.5px solid rgba(229,231,235,.8);position:relative;z-index:1}.stats-number{font-size:1.875rem;font-weight:700;color:#42aced}.stats-label{font-size:1rem;color:#111827;font-weight:500}.empty-state{text-align:center;padding:5rem 2rem;display:none;background-color:#f9fafb;border-radius:.375rem;border:1.5px solid rgba(229,231,235,.8)}.empty-state.show{display:block}.empty-icon-wrapper{display:inline-flex;align-items:center;justify-content:center;width:5rem;height:5rem;margin:0 auto 1.5rem;background-color:#42aced1a;border-radius:50%;border:2px solid rgba(66,172,237,.2)}.empty-icon{width:2.5rem;height:2.5rem;color:#42aced}.empty-text{font-size:1.25rem;font-weight:600;color:#111827;margin-bottom:.75rem}.empty-hint{font-size:.9375rem;color:#6b7280;line-height:1.6;max-width:24rem;margin:0 auto}.history-section{display:none;margin-bottom:4rem}.history-section.show{display:block}.history-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:2rem;gap:1rem;padding-bottom:1rem;border-bottom:2px solid rgba(229,231,235,.6)}.history-title{font-size:1.5rem;font-weight:700;color:#111827;margin:0;display:flex;align-items:center;gap:.75rem}.title-icon{width:1.5rem;height:1.5rem;color:#42aced;flex-shrink:0}.clear-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.625rem 1.25rem;background-color:#fff;color:#dc2626;border:1.5px solid rgba(229,231,235,.8);border-radius:.25rem;font-weight:600;font-size:.875rem;cursor:pointer;flex-shrink:0}.clear-btn:hover{background-color:#fef2f2;border-color:#dc26264d;color:#b91c1c}.btn-icon{width:1.125rem;height:1.125rem}.kanji-grid{display:flex;flex-wrap:wrap;gap:10px}.kanji-grid a{display:flex;flex-direction:column;align-items:center;gap:0;text-decoration:none}.kanji-grid .hk-card-box{position:relative;width:60px;height:60px;border:1.5px solid rgba(66,172,237,.35);border-radius:.25rem;background-color:#e8f4fd;display:flex;align-items:center;justify-content:center;overflow:hidden}.kanji-grid a:hover .hk-card-box{border-color:#42aced99;background-color:#42aced}.kanji-grid .hk-card-line-h{position:absolute;top:50%;left:0;right:0;height:0;border-top:1px dashed rgba(66,172,237,.25);pointer-events:none}.kanji-grid a:hover .hk-card-line-h{border-top-color:#ffffff4d}.kanji-grid .hk-card-line-v{position:absolute;left:50%;top:0;bottom:0;width:0;border-left:1px dashed rgba(66,172,237,.25);pointer-events:none}.kanji-grid a:hover .hk-card-line-v{border-left-color:#ffffff4d}.kanji-grid .hk-card-char{font-family:Hiragino Kaku Gothic Pro,Yu Gothic,Meiryo,serif;font-size:1.6rem;font-weight:400;color:#42aced;line-height:1;position:relative;z-index:1}.kanji-grid a:hover .hk-card-char{color:#fff}.faq-section{margin-top:5rem;padding:2.5rem;background-color:#f9fafb;border-radius:.375rem;border:1.5px solid rgba(229,231,235,.8)}.faq-title{font-size:1.75rem;font-weight:700;color:#111827;margin-bottom:2rem;display:flex;align-items:center;gap:.75rem}.faq-title:before{content:"";display:inline-block;width:4px;height:1.5rem;background-color:#42aced;border-radius:2px}.faq-list{display:flex;flex-direction:column;gap:0}.faq-item{background:transparent;border:none;border-bottom:1px solid rgba(229,231,235,.8);border-radius:0;overflow:visible;padding:0}.faq-item:last-child{border-bottom:none}.faq-item:hover{border-bottom-color:#42aced4d}.faq-item[open]{border-bottom-color:#42aced80}.faq-question{display:flex;align-items:center;gap:.75rem;padding:1.25rem .5rem;font-size:1.0625rem;font-weight:600;color:#111827;cursor:pointer;list-style:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.faq-question::-webkit-details-marker{display:none}.faq-question:after{content:"";margin-left:auto;width:1.5rem;height:1.5rem;flex-shrink:0;background-color:#42aced1a;border:1.5px solid rgba(66,172,237,.3);border-radius:.25rem;display:flex;align-items:center;justify-content:center;background-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" fill="none"><path d="M8 4v8M4 8h8" stroke="%2342ACED" stroke-width="2" stroke-linecap="round"/></svg>');background-repeat:no-repeat;background-position:center}.faq-item[open] .faq-question:after{background-color:#42aced;border-color:#2d96d980;background-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" fill="none"><path d="M8 4v8M4 8h8" stroke="white" stroke-width="2" stroke-linecap="round"/></svg>')}.faq-question:hover{color:#2d96d9;padding-left:.75rem}.faq-icon{width:1.25rem;height:1.25rem;flex-shrink:0;color:#42aced}.faq-answer{padding:0 .5rem 1.5rem 2.5rem;color:#4b5563;line-height:1.75}.faq-answer p{margin:0;font-size:.9375rem}.faq-answer strong{color:#2d96d9;font-weight:600}@media(max-width:768px){.hero-section{flex-direction:column;align-items:flex-start;gap:1rem;padding:2rem 1.5rem}.hero-title{font-size:1.875rem}.hero-subtitle{font-size:.9375rem}.stats-badge{align-self:flex-start}.history-header{margin-bottom:1.5rem;padding-bottom:.75rem}.history-title{font-size:1.125rem}.title-icon{width:1.25rem;height:1.25rem}.clear-btn{font-size:.8125rem;padding:.5rem .875rem;gap:.375rem}.btn-icon{width:1rem;height:1rem}.faq-section{padding:2rem 1.5rem}.kanji-grid{gap:8px}.kanji-grid .hk-card-box{width:52px;height:52px;border-radius:.25rem}.kanji-grid .hk-card-char{font-size:1.4rem}.faq-section{margin-top:3rem}.faq-title{font-size:1.5rem}.faq-question{font-size:1rem}.faq-answer{padding:0 0 1.25rem 1.75rem;font-size:.9375rem}.faq-icon{width:1.125rem;height:1.125rem}}@media(max-width:480px){.kanji-grid{gap:6px}.kanji-grid .hk-card-box{width:46px;height:46px;border-radius:.25rem}.kanji-grid .hk-card-char{font-size:1.25rem}.faq-question{font-size:.9375rem}.faq-answer{padding:0 0 1rem 1.5rem;font-size:.875rem}}