:root{--ink:#142b47;--muted:#54677b;--blue:#164dab;--blue-dark:#123c82;--pale:#edf4ff;--border:#dce4ee;--paper:#f6f8fc;--white:#fff;--danger:#b42332;--radius:16px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button,.button{border:1px solid var(--blue);border-radius:9px;background:var(--blue);color:white;display:inline-flex;align-items:center;justify-content:center;padding:10px 22px;line-height:1.6;min-height:46px;cursor:pointer;font-weight:650;text-decoration:none;gap:8px}button:hover,.button:hover{background:var(--blue-dark);text-decoration:none}button:disabled{cursor:not-allowed;opacity:.55}.button.secondary{background:white;color:var(--blue);border-color:var(--border)}.button.secondary:hover{background:var(--pale)}:focus-visible{outline:3px solid #d27a00;outline-offset:3px}input,select,textarea{width:100%;border:1px solid #aebdd0;border-radius:8px;background:white;color:var(--ink);padding:11px 13px;min-width:0}textarea{resize:vertical}label{display:block;font-weight:600;margin-bottom:20px}label>input,label>select,label>textarea{display:block;margin-top:7px;font-weight:400}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.5;letter-spacing:.025em;margin-bottom:14px}h2{font-size:1.25rem;line-height:1.6}h3{font-size:1.6rem;line-height:1.5}p{color:var(--muted)}.container{width:min(1160px,calc(100% - 64px));margin:0 auto;min-height:80vh}.site-header{height:88px;border-bottom:1px solid var(--border);background:white}.header-inner{width:min(1240px,calc(100% - 64px));height:100%;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-size:1.2rem;font-weight:800;white-space:nowrap}.brand-mark{display:grid;place-items:center;background:var(--blue);color:white;width:38px;height:42px;border-radius:10px 10px 18px 4px;font-size:1.4rem}.site-header nav{display:flex;align-items:center;gap:26px;font-size:.94rem}.site-header nav a{color:var(--ink)}.site-header form{margin:0}.text-button{background:none!important;border:0;color:var(--blue);padding:0;font-weight:400}.search-hero{padding:62px 0 30px;max-width:890px}.eyebrow{display:block;font-size:.88rem;font-weight:700;color:var(--blue);letter-spacing:.13em;margin-bottom:14px}.hero-copy p{margin-bottom:28px}.search-form{display:flex;padding:8px;background:white;border:1px solid #aabdd8;border-radius:14px;box-shadow:0 5px 14px #143e7a08;align-items:center;gap:10px}.search-form input{border:0;padding:10px 0;min-width:0}.search-form button{white-space:nowrap;padding:12px 26px}.search-icon{font-size:2rem;line-height:1;padding-left:14px;color:var(--blue)}.search-hint{font-size:.875rem;margin:12px 0 0 6px}.category-chips{display:flex;gap:9px;flex-wrap:wrap;padding:0 0 34px;border-bottom:1px solid var(--border)}.chip{font-size:.9rem;padding:7px 15px;min-height:40px;border:1px solid var(--border);border-radius:40px;background:white;color:var(--muted)}.chip.active{color:white;background:var(--ink);border-color:var(--ink)}.chip:hover{border-color:var(--blue);text-decoration:none}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:32px 0 20px}.section-heading h1,.section-heading h2{margin:0}.section-heading>span{color:var(--muted);font-size:.9rem}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.term-card{padding:26px;background:white;border:1px solid var(--border);border-radius:var(--radius);color:var(--ink);display:flex;flex-direction:column;min-height:265px;transition:border-color .15s,box-shadow .15s;overflow-wrap:anywhere}.term-card:hover{border-color:var(--blue);box-shadow:0 4px 18px #164dab10;text-decoration:none}.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.pill{display:inline-block;color:var(--blue);background:var(--pale);font-size:.85rem;padding:3px 10px;border-radius:6px}.play-icon{display:grid;place-items:center;background:var(--pale);color:var(--blue);border-radius:50%;width:34px;height:34px;font-size:1.25rem}.reading{font-size:.88rem;color:var(--muted);display:block;letter-spacing:.08em}.term-card h3{margin-bottom:10px}.term-card p{font-size:.94rem;line-height:1.8}.card-link{display:flex;justify-content:space-between;font-size:.88rem;color:var(--blue);font-weight:650;margin-top:auto;padding-top:10px}.empty{background:white;border:1px dashed #b9c8db;border-radius:var(--radius);text-align:center;padding:54px 25px}.empty-symbol{display:inline-grid;place-items:center;background:var(--pale);width:56px;height:62px;border-radius:16px 16px 24px 8px;margin-bottom:20px;color:var(--blue);font-size:1.6rem}.empty h2{margin-bottom:10px}.empty p{margin-bottom:16px}.learning-note{border-left:3px solid var(--blue);padding:4px 0 4px 22px;margin:40px 0}.learning-note p{font-size:.9rem;margin:5px 0}.site-footer{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--border);margin-top:60px;padding:26px 0;color:var(--muted);font-size:.85rem}.site-footer a{color:var(--muted)}.page-heading{padding-top:50px;margin-bottom:32px}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.category-card{padding:28px;background:white;border:1px solid var(--border);border-radius:var(--radius);color:var(--ink)}.category-card:hover{border-color:var(--blue);text-decoration:none}.category-number{color:var(--blue);font-size:.875rem;letter-spacing:.12em;display:block;margin-bottom:22px}.category-card h2{font-size:1.4rem;margin-bottom:8px}.category-card p{font-size:.94rem;min-height:3.5em}.category-card>span:last-child{font-size:.875rem;display:flex;justify-content:space-between;color:var(--blue)}.breadcrumb{display:flex;gap:12px;flex-wrap:wrap;font-size:.875rem;padding:28px 0}.detail-title{display:flex;align-items:center;justify-content:space-between;margin:12px 0 26px}.detail-title h1{margin:4px 0 0;font-size:2.5rem}.detail-grid{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(0,1fr);gap:30px}.video-panel{background:white;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;align-self:start}.player-shell{width:100%;aspect-ratio:16/9;min-height:200px;background:#102038}.player-shell iframe{width:100%;height:100%;min-height:200px;border:0;display:block}.player-controls{display:flex;align-items:end;flex-wrap:wrap;gap:18px;justify-content:space-between;padding:22px}.player-controls fieldset{border:0;padding:0;margin:0}.player-controls legend,.speed-label{font-size:.875rem;font-weight:600;margin-bottom:7px}.speed-label{margin:0}.speed-label select{margin-top:7px;min-height:42px;padding:7px 10px}.segmented{display:flex;flex-wrap:wrap;gap:4px}.segmented button{padding:8px 12px;font-size:.875rem;min-height:42px;background:white;border-color:var(--border);color:var(--ink)}.segmented button[aria-pressed=true]{background:var(--pale);border-color:var(--blue);color:var(--blue)}.player-status,.video-link{font-size:.875rem;margin:0;padding:0 22px 16px}.word-notes{background:white;border:1px solid var(--border);border-radius:var(--radius);padding:28px;overflow-wrap:anywhere}.word-notes section+section{border-top:1px solid var(--border);padding-top:20px;margin-top:22px}.word-notes p{margin-bottom:0}.word-notes .eyebrow{margin-bottom:8px}.word-notes h2{font-size:1.1rem;margin-bottom:10px}.word-notes blockquote{margin:0;padding:12px 16px;background:var(--pale);border-radius:8px}.multiline{white-space:pre-wrap}.notice{margin:22px 0;padding:16px 20px;background:#edf4ff;border:1px solid #b9d1f2;border-radius:10px}.notice a{margin-left:14px}.notice.success{background:#eef8f4;border-color:#bdddd0;color:#1d5846}.notice.error{background:#fff2f2;border-color:#edc1c5;color:#8a1c29}.notice ul{margin:8px 0 0;padding-left:22px}.auth-card{max-width:490px;margin:64px auto;background:white;border:1px solid var(--border);border-radius:var(--radius);padding:34px}.auth-card h1{font-size:1.7rem}.full{width:100%;margin-top:8px}.admin-nav{display:flex;gap:24px;flex-wrap:wrap;padding:22px 0;border-bottom:1px solid var(--border);font-size:.94rem}.stats{display:flex;gap:24px;flex-wrap:wrap;margin:25px 0}.stats>span{background:white;border:1px solid var(--border);padding:14px 24px;border-radius:10px;min-width:170px;color:var(--muted)}.stats strong{font-size:1.5rem;color:var(--ink);margin-left:20px}.admin-filter{display:flex;gap:16px;align-items:end;background:white;padding:20px;border:1px solid var(--border);border-radius:12px;margin-bottom:20px}.admin-filter label{margin:0;flex:1}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:12px;background:white}table{border-collapse:collapse;width:100%;text-align:left;white-space:nowrap;font-size:.94rem}th{background:#eef3f9;color:var(--muted);font-size:.875rem;font-weight:600}td,th{padding:17px 20px;border-bottom:1px solid var(--border)}tr:last-child td{border-bottom:0}td small{display:block;color:var(--muted);font-size:.85rem}.row-actions{display:flex;gap:18px}.status{border-radius:5px;padding:4px 8px;font-size:.85rem}.published{background:#e4f3ec;color:#235d47}.draft{background:#edf0f5;color:#526075}.editor-grid{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(0,1fr);gap:24px}.form-section{background:white;padding:28px;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:24px}.form-section h2{margin-bottom:24px}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.required{font-size:.8rem;color:var(--blue);font-weight:400;margin-left:5px}.help{font-size:.875rem;margin-top:-10px}.danger-zone{border-top:1px solid var(--border);padding-top:20px;margin-top:30px}.danger-text{color:var(--danger)}button.danger{background:var(--danger);border-color:var(--danger)}.narrow{max-width:720px;margin:36px auto}.pagination{display:flex;justify-content:center;align-items:center;gap:22px;margin-top:30px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip{position:absolute;left:-10000px;top:8px;z-index:10}.skip:focus{left:10px;background:white;padding:10px}@media(max-width:900px){.cards,.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.detail-grid,.editor-grid{grid-template-columns:1fr}.site-header nav{gap:16px}.player-shell{min-height:230px}}@media(max-width:600px){.container,.header-inner{width:calc(100% - 32px)}.site-header{height:auto;min-height:82px}.header-inner{padding:14px 0;align-items:start;flex-direction:column;gap:12px}.brand{font-size:1.1rem}.brand-mark{width:32px;height:35px}.site-header nav{font-size:.875rem;gap:18px;flex-wrap:wrap}.search-hero{padding:34px 0 22px}.search-hero h1{font-size:1.65rem}.search-form{gap:7px;padding:6px}.search-icon{display:none}.search-form input{padding:8px;font-size:16px}.search-form button{padding:10px 12px;font-size:.875rem}.search-hint{font-size:.875rem}.category-chips{padding-bottom:24px;gap:7px}.chip{padding:6px 12px}.cards,.category-grid{grid-template-columns:1fr}.term-card{min-height:230px;padding:22px}.section-heading{align-items:start;flex-wrap:wrap}.section-heading h1{font-size:1.65rem}.section-heading>span{white-space:nowrap}.empty{padding:35px 20px}.site-footer{flex-direction:column;gap:8px;margin-top:40px}.learning-note{margin:30px 0}.detail-title h1{font-size:2rem}.player-shell{min-height:200px}.player-controls{padding:18px;align-items:start}.word-notes{padding:22px}.auth-card{padding:24px;margin:32px auto}.admin-filter{flex-direction:column;align-items:stretch}.stats{gap:10px}.stats>span{min-width:0;flex:1;padding:12px;font-size:.875rem}.stats strong{display:block;margin:0}.field-grid{grid-template-columns:1fr;gap:0}.form-section{padding:20px}.admin-nav{gap:17px;font-size:.875rem}.breadcrumb{gap:8px}.page-heading{padding-top:32px}td,th{padding:14px}.empty p{overflow-wrap:anywhere}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.install-checkbox{display:inline-block;width:20px;height:20px;vertical-align:middle;margin:0 8px 0 0;padding:0}
[hidden]{display:none!important}#favorite-feedback{min-height:0;font-size:.9rem;color:var(--blue)}#favorite-feedback:not(:empty){padding-top:16px}.term-card-content{display:flex;flex-direction:column;flex:1;color:var(--ink)}.term-card-content:hover{text-decoration:none}.favorite-button{background:white;border-color:var(--border);color:var(--blue);font-size:.875rem;padding:8px 12px;margin-top:18px}.favorite-button:hover,.favorite-button[aria-pressed=true]{background:var(--pale);color:var(--blue)}.detail-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.detail-actions .favorite-button{margin:0}.practice-controls{display:flex;gap:8px;flex-wrap:wrap;flex-basis:100%}.practice-controls button{background:white;color:var(--blue);border-color:var(--border);font-size:.875rem}.practice-controls button[aria-pressed=true]{background:var(--blue);color:white}.segment-caption{font-size:.875rem;margin:0;padding:0 22px 12px}.time-fields{border:1px solid var(--border);border-radius:10px;padding:16px;margin:0 0 20px;min-width:0}.time-fields legend{font-size:.875rem;font-weight:600}.time-fields .field-grid{gap:12px}.time-fields input{padding:8px;min-width:0}.time-fields label{font-size:.875rem}.time-fields .help{margin-bottom:0}.related-results,.related-selected{list-style:none;padding:0}.related-results li,.related-selected li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}.related-results li>span,.related-selected li>span{overflow-wrap:anywhere;min-width:0}.related-results button,.related-selected button{flex-shrink:0;padding:7px 12px;font-size:.875rem}.small-heading{font-size:1rem;margin-top:24px}.related-results{max-height:360px;overflow:auto}@media(max-width:600px){.detail-title{align-items:start;gap:16px;flex-direction:column}.time-fields .field-grid{grid-template-columns:1fr 1fr}.site-header nav{gap:12px}}

/* 長いサイト名も画面幅に合わせて折り返す。 */
.site-header{height:auto;min-height:88px}.header-inner{min-height:88px;padding:14px 0;flex-wrap:wrap}.brand{min-width:0;max-width:100%;white-space:normal}.brand-name{overflow-wrap:anywhere;min-width:0}.brand-mark{flex-shrink:0}.site-header nav{flex-wrap:wrap}.site-footer{overflow-wrap:anywhere}.site-footer>span{min-width:0}.site-footer>a{flex-shrink:0}

.site-footer{flex-wrap:wrap}.footer-links{display:flex;gap:20px;flex-wrap:wrap;align-items:center;min-width:0}

/* TOPのPR欄 */
.home-pr{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.9fr);align-items:center;gap:36px;margin:30px 0 36px;padding:32px;border:1px solid #c8d9ef;border-radius:var(--radius);background:linear-gradient(120deg,#edf4ff 0%,#f8fbff 100%);overflow-wrap:anywhere}
.home-pr-label{display:inline-block;padding:3px 10px;margin-bottom:14px;border:1px solid #b9cce7;border-radius:5px;color:var(--blue);font-size:.75rem;font-weight:700;letter-spacing:.08em;background:#fff}
.home-pr h2{font-size:1.5rem;margin-bottom:10px;color:var(--ink)}
.home-pr-message{font-size:1.15rem;line-height:1.85;color:var(--ink);font-weight:650;margin-bottom:0;max-width:28em}
.home-pr-links{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px}
.home-pr-link{display:flex;justify-content:space-between;align-items:center;gap:14px;min-height:76px;padding:14px 18px;border:1px solid #c8d9ef;border-radius:10px;background:white;color:var(--ink);transition:background .15s,border-color .15s}
.home-pr-link:hover{background:var(--pale);border-color:var(--blue);text-decoration:none}
.home-pr-link strong{display:block;font-size:.94rem;line-height:1.6}.home-pr-link small{display:block;font-size:.8rem;color:var(--muted);margin-top:3px}
.home-pr-primary{grid-column:1/-1;background:var(--blue);color:#fff;border-color:var(--blue)}.home-pr-primary small{color:#e4edff}.home-pr-primary:hover{background:var(--blue-dark);border-color:var(--blue-dark)}
@media(max-width:900px){.home-pr{grid-template-columns:minmax(0,1fr);gap:22px;padding:26px}.home-pr-links{grid-template-columns:repeat(3,minmax(0,1fr))}.home-pr-primary{grid-column:auto}}
@media(max-width:600px){.home-pr{margin:24px 0 30px;padding:22px;gap:20px}.home-pr h2{font-size:1.3rem}.home-pr-message{font-size:1rem}.home-pr-links{grid-template-columns:minmax(0,1fr);gap:10px}.home-pr-link{min-height:68px;padding:12px 15px}}