:root{
  --bg:#fff9f5;--card:#fff;--ink:#2a2a2a;--muted:#6f7280;
  --pink:#ef4b83;--blue:#2a7de1;--green:#28a36a;--orange:#f39a31;--violet:#7f59d0;
  --line:#e8e9ef;--shadow:0 10px 28px rgba(52,64,90,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,"Segoe UI","Noto Sans JP",Arial,sans-serif;background:linear-gradient(180deg,#fffaf7,#f7fbff);color:var(--ink)}
button,input{font:inherit}
.topbar{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:12px 20px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.brand{font-weight:800;margin-right:10px;font-size:20px;color:#14396d}
.navbtn{border:0;background:#f5f7fb;padding:10px 14px;border-radius:12px;cursor:pointer;font-weight:700}
.navbtn.active{background:#14396d;color:#fff}
main{max-width:1500px;margin:auto;padding:22px}
.hero{background:linear-gradient(135deg,#eef6ff,#fff0f6);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow);margin-bottom:18px}
.hero h1{margin:0 0 8px;color:#14396d;font-size:32px}
.hero p{margin:0;color:var(--muted)}
.section{display:none}
.section.active{display:block}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:14px 0}
.search{flex:1;min-width:260px;padding:12px 14px;border:1px solid #d8dce6;border-radius:12px;background:#fff}
.pill{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;cursor:pointer}
.pill.active{background:#14396d;color:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:var(--shadow)}
.jp{font-size:28px;font-weight:800;font-family:"Noto Sans JP","Yu Gothic",sans-serif}
.romaji{font-weight:700;color:#2457a7;margin-top:4px}
.vi{color:#434957;margin-top:4px}
.meta{font-size:12px;color:var(--muted);margin-top:8px}
.speaker{border:0;border-radius:999px;background:#eef5ff;cursor:pointer;padding:8px 10px}
.vocab-head{display:flex;justify-content:space-between;gap:10px}
.emoji{font-size:34px}
.kana-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,1fr);gap:18px}
.kana-table{display:grid;grid-template-columns:repeat(5,minmax(72px,1fr));gap:8px}
.kana-cell{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 8px;text-align:center;cursor:pointer;transition:.15s}
.kana-cell:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.kana-cell .jp{font-size:34px}
.detail{position:sticky;top:88px;height:fit-content}
.bigkana{font-size:120px;line-height:1;text-align:center;font-family:"Noto Sans JP","Yu Gothic",sans-serif}
.stroke-box{margin-top:12px;padding:14px;border-radius:14px;background:#faf6ef;border:1px dashed #d9ba8c}
.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#f0f3f8;font-size:12px;margin:3px}
.lesson-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:18px}
.lesson-menu{position:sticky;top:88px;height:calc(100vh - 108px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow)}
.lesson-item{display:block;width:100%;text-align:left;border:0;background:transparent;border-radius:12px;padding:11px 12px;cursor:pointer;margin:3px 0}
.lesson-item.active{background:#eaf3ff;color:#174f9a;font-weight:800}
.lesson-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 16px}
.subtab{border:0;background:#f0f3f7;padding:9px 12px;border-radius:10px;cursor:pointer;font-weight:700}
.subtab.active{background:#14396d;color:#fff}
.lesson-image{width:100%;border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow);margin:12px 0}
.grammar-card{border-left:5px solid var(--green)}
.pattern{font-size:22px;font-weight:800;color:#1c7c54}
.example{background:#f7fbff;border-radius:12px;padding:10px;margin-top:10px}
.note{background:#fff7d8;border:1px solid #efdf9c;border-radius:14px;padding:12px}
@media(max-width:900px){
 .kana-layout,.lesson-layout{grid-template-columns:1fr}
 .detail,.lesson-menu{position:static;height:auto}
 .kana-table{grid-template-columns:repeat(5,1fr)}
}

.vocab-group{margin:20px 0 30px}.group-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 10px;padding:10px 14px;border-radius:14px;background:linear-gradient(90deg,#eaf3ff,#fff3f7);font-size:20px;font-weight:800;color:#173c73}.group-title small{font-size:12px;color:#687083;font-weight:700}.kanji-top{display:flex;justify-content:space-between;align-items:flex-start}.kanji-examples{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}.kanji-example{display:grid;grid-template-columns:80px 90px 1fr 1fr auto;gap:8px;align-items:center;padding:8px 0;border-bottom:1px dashed var(--line);font-size:13px}.kanji-example:last-child{border-bottom:0}@media(max-width:650px){.kanji-example{grid-template-columns:1fr 1fr}.kanji-example .speaker{grid-column:2}}
/* v3 layout fixes */
#vocab-grid,#lesson-vocab-grid{display:block!important}
.vocab-group{display:block;width:100%;margin:22px 0 34px}
.vocab-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
.vocab-card{min-width:0}.vocab-side{display:flex;flex-direction:column;align-items:center;gap:8px}

#kanji-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));align-items:start}
.kanji-card{min-width:0;overflow:hidden;padding:18px}
.kanji-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;min-height:88px}
.kanji-char{font-family:"Noto Sans JP","Yu Gothic",sans-serif;font-size:72px;line-height:1.05;font-weight:800;padding:2px 4px;white-space:nowrap}
.kanji-reading{font-weight:800;color:#195cb3;overflow-wrap:anywhere}.kanji-meaning{font-size:15px;margin:6px 0 10px}
.kanji-examples{overflow:hidden}.kanji-example{grid-template-columns:minmax(74px,1fr) minmax(78px,1fr) minmax(90px,1.1fr) minmax(100px,1.2fr) auto;min-width:0}
.kanji-example>*{min-width:0;overflow-wrap:anywhere}.kanji-word{font-family:"Noto Sans JP","Yu Gothic",sans-serif;font-size:20px;font-weight:800}.kana-reading{font-family:"Noto Sans JP","Yu Gothic",sans-serif}

.grammar-list,#grammar-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:16px;align-items:start}
.grammar-card{cursor:pointer;transition:.15s}.grammar-card:hover{transform:translateY(-1px)}
.grammar-head{display:flex;justify-content:space-between;gap:14px;align-items:flex-start}.expand-hint{font-size:12px;color:#65728a;background:#eff5ff;padding:6px 8px;border-radius:9px;white-space:nowrap}
.grammar-main-example{font-size:21px!important}.grammar-more{display:none;margin-top:12px;border-top:1px solid var(--line);padding-top:8px}.grammar-more.open{display:block}
.grammar-example-row{display:grid;grid-template-columns:28px 1fr auto;gap:10px;align-items:center;padding:10px 0;border-bottom:1px dashed var(--line)}.grammar-example-row:last-child{border-bottom:0}.grammar-example-row .jp{font-size:18px}.example-no{width:26px;height:26px;border-radius:50%;background:#eaf3ff;color:#174f9a;display:grid;place-items:center;font-weight:800}
.phrase-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}

.number-study{display:grid;gap:16px}.number-hero{background:linear-gradient(135deg,#e8f3ff,#fff1f5);border:1px solid var(--line);border-radius:22px;padding:20px}.number-hero h2{margin:0 0 6px;color:#14396d}.number-converter{display:grid;grid-template-columns:minmax(160px,260px) auto minmax(240px,1fr);gap:10px;align-items:center;margin-top:16px}.number-converter input{padding:11px 12px;border:1px solid #ccd6e4;border-radius:10px}.number-converter button{border:0;background:#14396d;color:#fff;border-radius:10px;padding:11px 16px;font-weight:800;cursor:pointer}#num-result{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:#fff;border-radius:12px;padding:10px 12px;min-height:50px}
.number-block{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}.number-block summary{cursor:pointer;font-weight:900;color:#14396d;padding:14px 16px;background:#f7faff;font-size:18px}.number-block[open] summary{border-bottom:1px solid var(--line)}.rule-note{padding:14px;background:#fff9dd;border-bottom:1px solid #efe2a6}.scroll-table{max-height:520px;overflow:auto}.scroll-table table{width:100%;border-collapse:collapse}.scroll-table th,.scroll-table td{padding:8px 10px;border-bottom:1px solid #edf0f5;text-align:left}.scroll-table thead th{position:sticky;top:0;background:#14396d;color:#fff;z-index:2}.smalljp{font-size:18px!important}.sample-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px;padding:14px}.number-chip{display:flex;flex-direction:column;gap:5px;background:#f8fbff;border:1px solid #e1e8f2;border-radius:13px;padding:12px}.number-chip .jp{font-size:20px}.number-examples{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.phrase-line{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:10px 0;border-bottom:1px dashed var(--line)}.phrase-line:last-child{border-bottom:0}.phrase-line .jp{font-size:19px}
@media(max-width:780px){.number-converter{grid-template-columns:1fr}.grammar-list,#grammar-grid{grid-template-columns:1fr}.kanji-example{grid-template-columns:1fr 1fr}.kanji-example .speaker{grid-column:2}.kanji-char{font-size:62px}}

/* v1.0.2 refinements */
body{min-height:100vh}.brand{white-space:nowrap}
#vocab-grid,.lesson-vocab-groups{display:block!important}
.vocab-group{display:block!important;clear:both;width:100%!important;margin:22px 0 36px}
.vocab-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;width:100%}
.group-title{position:relative;overflow:hidden}.group-title:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:#2563eb}
.kanji-card{display:flex;flex-direction:column;min-height:100%;overflow:hidden}
.kanji-top{min-height:82px;align-items:center}.kanji-char{font-size:66px;line-height:1!important;padding:0!important;margin:0;display:block}.kanji-main-audio{flex:0 0 auto}
.kanji-readings{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0 7px}
.kanji-readings>div{display:flex;gap:7px;align-items:center;background:#f7f9fc;border:1px solid var(--line);padding:8px;border-radius:10px;min-width:0}
.reading-label{font-size:10px;font-weight:900;letter-spacing:.07em;padding:4px 5px;border-radius:6px;color:white}.reading-label.on{background:#2563eb}.reading-label.kun{background:#e34d77}
.kanji-readings b{font-family:"Noto Sans JP","Yu Gothic",sans-serif;font-size:14px;overflow-wrap:anywhere}
.kanji-example{grid-template-columns:minmax(86px,1.1fr) minmax(95px,1.1fr) minmax(95px,1fr) minmax(120px,1.35fr) auto}
.frequency-study{background:white;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden;margin:0 0 20px}
.frequency-title{padding:18px 20px;background:linear-gradient(135deg,#ecf7ff,#fff1f6)}.frequency-title h2{display:inline;margin:0 0 0 8px;color:#153d78}.frequency-title p{margin:8px 0 0;color:var(--muted)}.freq-icon{font-size:25px}
.frequency-scale{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:12px 18px}.frequency-scale>div{text-align:center;padding:10px;border-radius:13px;display:flex;flex-direction:column}
.frequency-scale b{font-family:"Noto Sans JP","Yu Gothic",sans-serif;font-size:22px}.frequency-scale span{font-weight:800}.frequency-scale small{color:#606879}
.freq-yoku{background:#fff0bf}.freq-tokidoki{background:#fff6df}.freq-amari{background:#eff4fa}.freq-zenzen{background:#edf0f4}
.frequency-table-wrap{overflow:auto;padding:0 18px}.frequency-table{width:100%;border-collapse:separate;border-spacing:0;min-width:760px;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.frequency-table th{background:#173f76;color:white;padding:12px}.frequency-table td{padding:10px;border-top:1px solid var(--line);text-align:center}.frequency-table td:first-child{text-align:left;min-width:315px}
.frequency-table td:first-child .jp{display:block;font-size:18px}.frequency-table td:first-child .romaji{display:block}.frequency-table td:first-child small{display:block;color:#656d7a;margin:2px 0 5px}
.freq-dot{font-size:25px}.strong{color:#f2b01e}.medium{color:#f0c56c}.light{color:#9aa7b7}.none{color:#596579}
.frequency-rules{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:15px 18px 18px}.freq-rule{display:flex;flex-direction:column;padding:13px;border-radius:13px}.freq-rule b{font-size:18px}
.freq-rule span{font-family:"Noto Sans JP","Yu Gothic",sans-serif;margin-top:6px;font-weight:700}.freq-rule.positive{background:#effbf4;border:1px solid #bce9cd}.freq-rule.negative{background:#fff3f4;border:1px solid #f0c1c7}
.home-hero{background:linear-gradient(135deg,#0d4f9f,#2487dc 52%,#f6cde1);border-radius:28px;color:white;padding:34px;display:grid;grid-template-columns:1.6fr .7fr;gap:24px;box-shadow:0 18px 46px rgba(21,68,129,.22);overflow:hidden;position:relative}
.home-hero:after{content:"あ ア 漢";position:absolute;right:-20px;bottom:-30px;font-size:120px;font-weight:900;opacity:.08}.eyebrow{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);padding:7px 11px;border-radius:999px;font-weight:800;font-size:12px}
.home-hero h1{font-size:39px;line-height:1.12;margin:14px 0 10px}.home-hero p{font-size:17px;line-height:1.6;max-width:820px;margin:0}.home-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.home-badges span{background:white;color:#174b87;padding:8px 11px;border-radius:999px;font-weight:800;font-size:12px}
.home-japanese-mark{align-self:center;background:rgba(255,255,255,.93);color:#123d73;border-radius:24px;padding:24px;text-align:center;transform:rotate(2deg);box-shadow:0 12px 25px rgba(0,0,0,.12)}
.home-japanese-mark b{display:block;font-family:"Noto Sans JP";font-size:58px}.home-japanese-mark span{display:block;font-weight:900;font-family:"Noto Sans JP";font-size:18px}.home-japanese-mark small{display:block;margin-top:5px}
.home-section-title{margin:26px 2px 13px}.home-section-title h2{font-size:28px;margin:0;color:#143d75}.home-section-title p{margin:4px 0;color:var(--muted)}
.home-lessons{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.home-lesson{border:0;border-radius:20px;min-height:142px;padding:17px;text-align:left;cursor:pointer;display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto 1fr;gap:7px 12px;box-shadow:var(--shadow);transition:.18s;overflow:hidden;position:relative;color:#17365f}
.home-lesson:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(45,65,95,.15)}.home-lesson b{font-size:13px;border-radius:999px;background:rgba(255,255,255,.76);padding:6px 8px;width:max-content}.home-lesson span{grid-column:1/3;font-size:17px;font-weight:900;line-height:1.25;max-width:85%}.home-lesson i{position:absolute;right:13px;bottom:10px;font-style:normal;font-size:42px}
.home-lesson:nth-child(1),.home-lesson:nth-child(5),.home-lesson:nth-child(9){background:linear-gradient(135deg,#eaf4ff,#f4f9ff)}.home-lesson:nth-child(2),.home-lesson:nth-child(6),.home-lesson:nth-child(10){background:linear-gradient(135deg,#fff0f5,#fff8fb)}
.home-lesson:nth-child(3),.home-lesson:nth-child(7),.home-lesson:nth-child(11){background:linear-gradient(135deg,#effaf3,#f7fff9)}.home-lesson:nth-child(4),.home-lesson:nth-child(8){background:linear-gradient(135deg,#fff7df,#fffaf0)}
.app-footer{margin-top:35px;background:#0f2748;color:#d9e7f7;padding:25px max(22px,calc((100vw - 1500px)/2 + 22px));font-size:13px;line-height:1.6}.app-footer b{color:white;font-size:15px}.app-footer p{margin:5px 0}
@media(max-width:1050px){.home-lessons{grid-template-columns:repeat(3,1fr)}.home-hero{grid-template-columns:1fr}.home-japanese-mark{display:none}}
@media(max-width:720px){.home-lessons{grid-template-columns:1fr 1fr}.home-hero h1{font-size:30px}.frequency-scale{grid-template-columns:1fr 1fr}.frequency-rules{grid-template-columns:1fr}.kanji-readings{grid-template-columns:1fr}}
@media(max-width:470px){.home-lessons{grid-template-columns:1fr}}

/* v1.0.3 audio + Kanji layout refinement */
#kanji-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:start}
.kanji-card{min-width:0;width:100%;overflow:hidden;padding:18px;border-radius:20px}
.kanji-header-row{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:78px}
.kanji-char{font-family:"Noto Sans JP","Yu Gothic",sans-serif;font-size:64px!important;line-height:1!important;font-weight:900;margin:0!important;padding:0!important;flex:0 0 auto}
.kanji-main-audio{flex:0 0 38px;width:38px;height:38px;padding:0;display:grid;place-items:center}
.kanji-readings{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0}
.kanji-readings>div{min-width:0;display:flex;align-items:flex-start;gap:7px;padding:9px 10px;border:1px solid #e3e7ef;border-radius:11px;background:#f8fafc}
.kanji-readings b{font-size:14px;line-height:1.45;white-space:normal;overflow-wrap:anywhere;word-break:break-word}
.kanji-meaning{color:#444b59;font-size:15px;line-height:1.5;padding:0 1px 12px;border-bottom:1px solid #e4e7ed;min-height:35px}
.kanji-examples-title{font-weight:900;margin:13px 0 5px;color:#26384f}
.kanji-examples{display:flex;flex-direction:column;gap:0;min-width:0}
.kanji-example{display:block!important;min-width:0;padding:10px 0;border-bottom:1px dashed #dfe4eb;overflow:hidden}
.kanji-example:last-child{border-bottom:0}
.kanji-example-main{display:flex;align-items:center;justify-content:space-between;gap:8px;min-width:0}
.kanji-word{font-family:"Noto Sans JP","Yu Gothic",sans-serif;font-size:20px;font-weight:900;line-height:1.3;min-width:0;overflow-wrap:anywhere}
.kanji-example-main .speaker{flex:0 0 34px;width:34px;height:34px;padding:0;display:grid;place-items:center}
.kanji-example-reading{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:baseline;margin-top:4px;min-width:0}
.kana-reading{font-family:"Noto Sans JP","Yu Gothic",sans-serif;font-size:13px;color:#4c5565;overflow-wrap:anywhere}
.kanji-example .romaji{font-size:13px;margin:0;overflow-wrap:anywhere}
.kanji-example .vi{font-size:13px;margin-top:3px;line-height:1.4;overflow-wrap:anywhere}
@media(max-width:1150px){#kanji-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){#kanji-grid{grid-template-columns:1fr}.kanji-char{font-size:58px!important}.kanji-readings{grid-template-columns:1fr}}
/* v1.0.4 Kanji title: Kanji + Hán-Việt */
.kanji-header-row{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}
.kanji-title-pair{display:flex;align-items:center;gap:18px;min-width:0;flex-wrap:wrap}
.kanji-hanviet{font-size:44px;line-height:1;font-weight:900;letter-spacing:.02em;color:#e44b7a;text-transform:uppercase;white-space:nowrap}
.kanji-readings>div{overflow:hidden}
.kanji-readings b{white-space:normal;word-break:break-word;line-height:1.45}
@media(max-width:720px){.kanji-hanviet{font-size:34px}.kanji-char{font-size:58px}}

/* v1.0.5 stroke-order guides and compact Kanji selector */
.kana-cell.active{border-color:#2563eb;background:#edf5ff;box-shadow:0 0 0 2px rgba(37,99,235,.13)}
.stroke-box{padding:12px;background:linear-gradient(145deg,#fffaf2,#f8fbff);border-style:solid;border-color:#eadcc9}
.stroke-guide{display:flex;flex-direction:column;gap:10px}
.stroke-guide-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;color:#203652}
.stroke-guide-heading>div{display:flex;flex-direction:column;gap:2px}.stroke-guide-heading b{font-size:15px}.stroke-guide-heading span{font-size:12px;color:#687386}
.stroke-license{font-size:10px!important;color:#7b6656!important;text-align:right;max-width:110px}
.stroke-stage{width:min(100%,320px);margin:0 auto;aspect-ratio:1;border:1px solid #d8dee8;border-radius:16px;background:#fff;overflow:hidden;box-shadow:inset 0 0 18px rgba(32,54,82,.04)}
.stroke-svg{display:block;width:100%;height:100%}
.stroke-grid-lines line{stroke:#dbe5f0;stroke-width:.65;stroke-dasharray:2 2}
.stroke-paths path{fill:none;stroke:#203652;stroke-width:5;stroke-linecap:round;stroke-linejoin:round;opacity:.95}
.stroke-paths path.complete{stroke:#8190a3;opacity:.55}
.stroke-paths path.current{stroke:#d94a68;opacity:1;filter:drop-shadow(0 1px 1px rgba(217,74,104,.2))}
.stroke-paths path.pending{stroke:#cbd3de;opacity:.28}
.stroke-numbers text{font-family:Arial,sans-serif;font-size:8px;font-weight:800;fill:#526276;text-anchor:middle;paint-order:stroke;stroke:#fff;stroke-width:2px}
.stroke-numbers text.current{fill:#d43f62;font-size:9px}
.stroke-arrows line{stroke:#f08a24;stroke-width:1.7;stroke-linecap:round;opacity:0;transition:opacity .15s}
.stroke-arrows line.visible{opacity:1}.stroke-arrow-head{fill:#f08a24}
.stroke-controls{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.stroke-controls button{border:1px solid #d5dfeb;background:#fff;color:#20436f;border-radius:10px;padding:8px 7px;cursor:pointer;font-weight:800;font-size:12px}
.stroke-controls button:hover{background:#edf5ff;border-color:#9cbbe2}
.stroke-controls button[data-stroke-action="play"]{background:#173f76;color:#fff;border-color:#173f76}
.stroke-status{font-size:12px;font-weight:700;color:#59687b;text-align:center;min-height:16px}
.stroke-note,.stroke-empty{font-size:12px;line-height:1.45;color:#715e4c;background:#fff7df;border:1px solid #eedca8;border-radius:10px;padding:8px 10px}

.kanji-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(390px,.85fr);gap:18px;align-items:start}
#kanji-grid.kanji-table{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:9px;align-items:stretch}
.kanji-cell{min-width:0;min-height:102px;border:1px solid var(--line);border-radius:15px;background:#fff;padding:10px 6px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;cursor:pointer;box-shadow:0 5px 16px rgba(40,58,82,.06);transition:.16s}
.kanji-cell:hover{transform:translateY(-2px);border-color:#99b6dc;box-shadow:0 10px 24px rgba(40,58,82,.12)}
.kanji-cell.active{background:linear-gradient(145deg,#e7f2ff,#fff0f5);border-color:#2c6cb7;box-shadow:0 0 0 2px rgba(44,108,183,.13)}
.kanji-cell-char{font-family:"Noto Sans JP","Yu Gothic",sans-serif;font-size:42px;line-height:1;font-weight:900;color:#17365f}
.kanji-cell-label{max-width:100%;font-size:10px;font-weight:900;color:#d84770;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.kanji-grid-note{margin-top:14px;font-size:13px;color:#5a6677;line-height:1.55}
.kanji-detail{padding:16px;max-height:calc(100vh - 108px);overflow:auto;scroll-margin-top:90px}
.kanji-detail .kanji-header-row{min-height:auto}.kanji-detail .kanji-char{font-size:72px!important}.kanji-detail .kanji-hanviet{font-size:34px}
.kanji-detail .kanji-title-pair{gap:14px;flex-wrap:nowrap}.kanji-detail .kanji-meaning{border:0;padding:5px 0 0;margin:0;font-size:14px;min-height:0}
.kanji-detail .stroke-box{margin:12px 0}.kanji-detail .stroke-stage{width:min(100%,280px)}
.kanji-detail .kanji-readings{margin:12px 0}.kanji-detail .kanji-examples{border-top:1px solid var(--line)}

@media(max-width:1050px){
 .kanji-layout{grid-template-columns:minmax(0,1.15fr) minmax(350px,.85fr)}
 #kanji-grid.kanji-table{grid-template-columns:repeat(auto-fill,minmax(78px,1fr))}
}
@media(max-width:900px){
 .kanji-layout{grid-template-columns:1fr}
 .kanji-detail{position:static;max-height:none;overflow:visible}
 #kanji-grid.kanji-table{grid-template-columns:repeat(auto-fill,minmax(72px,1fr))}
 .kanji-cell{min-height:88px}.kanji-cell-char{font-size:36px}
}
@media(max-width:520px){
 .kana-cell{padding:10px 4px}.kana-cell .jp{font-size:29px}
 #kanji-grid.kanji-table{grid-template-columns:repeat(4,1fr);gap:7px}
 .kanji-cell{min-height:82px;padding:8px 4px}.kanji-cell-char{font-size:33px}.kanji-cell-label{font-size:9px}
 .kanji-detail .kanji-title-pair{align-items:center}.kanji-detail .kanji-char{font-size:60px!important}.kanji-detail .kanji-hanviet{font-size:27px}
 .stroke-guide-heading{align-items:flex-start}.stroke-controls{grid-template-columns:1fr}
}