/* ============================================================
   日语假名学习 · 页面样式
   - 通用组件（.d-breadcrumb / .l-hero / .l-page / .console /
     .tl-card / .btn-* / .rule-card 等）与 24-point.css 保持一致
   - 色板 / 圆角 / 间距取自 base.css，知乎设计规范对齐
   ============================================================ */

.d-breadcrumb{max-width:var(--container);margin:0 auto;padding:16px 24px 2px;font-size:13px;color:var(--ink-2)}

.d-breadcrumb a{color:var(--ink-2)}

.d-breadcrumb a:hover{color:var(--primary-strong)}

.d-breadcrumb-sep{margin:0 8px;color:var(--ink-2)}

.d-breadcrumb-current{color:var(--ink-2);max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom}

.l-hero{max-width:var(--container);margin:0 auto;padding:18px 24px 0}

.l-hero h1{font-size:22px;font-weight:600;line-height:1.4;color:var(--ink-title)}

.l-hero-desc{margin-top:6px;font-size:15px;line-height:1.7;color:var(--ink-2);max-width:var(--text-measure)}

.l-page{max-width:var(--container);margin:0 auto;padding:18px 24px 48px}

.console{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;align-items:start}

.tl-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm)}

.tl-card+.tl-card{margin-top:16px}

.tl-card-head{display:flex;align-items:center;gap:8px;padding:14px 16px;border-bottom:1px solid var(--border);font-size:15px;font-weight:600;color:var(--ink-title)}

.tl-card-head svg{width:15px;height:15px;color:var(--primary-strong);flex-shrink:0}

.tl-card-head .head-title{flex:1;min-width:0}

.tl-card-head .head-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}

.tl-card-body{padding:16px}

.status-badge{font-size:13px;font-weight:500;padding:2px 10px;border-radius:var(--radius-sm);color:var(--ink-2);background:var(--card-2);flex-shrink:0;white-space:nowrap}

.status-badge.is-ok{color:var(--primary-strong);background:var(--primary-soft)}

.status-badge.is-error{color:var(--ink-2);background:var(--red-soft)}

.act-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

.btn-main{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:34px;padding:0 18px;font-size:14px;font-weight:500;color:#fff;background:var(--primary);border:none;border-radius:var(--radius-md);cursor:pointer;transition:background .15s}

.btn-main:hover{background:var(--primary-hover)}

.btn-main:active{background:var(--primary-active)}

.btn-main:disabled{opacity:.55;cursor:not-allowed}

.btn-main svg{width:14px;height:14px}

.btn-line{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:34px;padding:0 16px;font-size:14px;color:var(--ink-2);background:var(--card);border:1px solid var(--border-input);border-radius:var(--radius-md);cursor:pointer;transition:color .15s,border-color .15s}

.btn-line:hover{color:var(--primary-strong);border-color:var(--primary)}

.btn-line svg{width:14px;height:14px}

.btn-mini{display:inline-flex;align-items:center;gap:5px;height:28px;padding:0 11px;font-size:13px;color:var(--ink-2);background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:color .15s,border-color .15s}

.btn-mini:hover:not(:disabled){color:var(--primary-strong);border-color:var(--primary)}

.btn-mini:disabled{opacity:.55;cursor:not-allowed}

.btn-mini svg{width:13px;height:13px}

.hint{margin-top:10px;font-size:13px;line-height:1.7;color:var(--ink-2)}

.rule-card+.tl-card{margin-top:16px}

.rule-list{list-style:none;display:grid;gap:6px 32px}

.rule-list li{position:relative;padding-left:14px;font-size:13px;line-height:1.8;color:var(--ink-2)}

.rule-list li::before{content:'';position:absolute;left:2px;top:9px;width:4px;height:4px;border-radius:50%;background:var(--ink-4)}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media(min-width:1000px){
  .console{grid-template-columns:minmax(0,1fr) 300px}
  .rule-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media(min-width:1400px){
  .rule-list{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media(max-width:1000px){
  .d-breadcrumb{padding:14px 16px 2px}
  .l-hero{padding:14px 16px 0}
  .l-page{padding:14px 16px 40px}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .footer-cols{grid-template-columns:repeat(2,1fr)}
}

@media(max-width:640px){
  .header-inner{padding:0 16px;gap:12px}
  .tl-card-head{flex-wrap:wrap}
  .act-row{display:grid;grid-template-columns:1fr 1fr}
  .act-row .btn-main{grid-column:1/-1}
  .footer-bottom{justify-content:center;text-align:center}
  .back-to-top{right:16px;bottom:24px}
}

/* ============================================================
   日语假名学习 · 专属组件
   ============================================================ */
.control-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:14px}

.seg-control{display:inline-flex;border:1px solid var(--border-input);border-radius:var(--radius-sm);overflow:hidden}

.seg-btn{padding:7px 16px;font-size:13px;color:var(--ink-2);background:transparent;border:none;cursor:pointer;transition:background .15s,color .15s}

.seg-btn.is-active{background:var(--primary);color:#fff}

.seg-btn:not(.is-active):hover{background:var(--card-2)}

.form-select{height:36px;padding:0 10px;border:1px solid var(--border-input);border-radius:var(--radius-sm);background:var(--card);font-size:13px;color:var(--ink-title);cursor:pointer}

.form-select:focus{border-color:var(--primary);outline:none}

.kana-grid{display:flex;flex-direction:column;gap:10px}

.kana-group{display:flex;gap:10px;flex-wrap:wrap}

.kana-card{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:64px;padding:12px 10px;background:var(--card-2);border:1px solid var(--border);border-radius:var(--radius-sm);transition:border-color .15s,transform .15s}

.kana-card:hover{border-color:var(--primary);transform:translateY(-2px)}

.kana-char{font-size:26px;line-height:1.1;color:var(--ink-title)}

.kana-romaji{margin-top:4px;font-size:12px;color:var(--ink-3);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

@media(max-width:640px){
  .kana-card{min-width:56px;padding:10px 8px}
  .kana-char{font-size:22px}
}