/* ====== 22 商务邮件生成器 · 石板蓝 + 邮件青 ====== */
.tsk.beg{
  --tsk-bg:#f2f5f8;
  --tsk-bg-2:#e7edf4;
  --tsk-card:#ffffff;
  --tsk-card-2:#f5f8fa;
  --tsk-ink:#1b2733;
  --tsk-sub:#546274;
  --tsk-faint:#8593a4;
  --tsk-line:#dbe3ec;
  --tsk-line-2:#eaeff5;
  --tsk-brand:#334f6e;
  --tsk-brand-2:#4a709a;
  --tsk-brand-soft:#e8eff7;
  --tsk-brand-ink:#2a4763;
  --tsk-teal:#0f766e;
  --tsk-teal-soft:#e2f3ef;
  --tsk-mail:#22374d;
  background:
    radial-gradient(640px 300px at 100% -10%, rgba(15,118,110,.09), transparent 60%),
    radial-gradient(520px 240px at -6% 6%, rgba(51,79,110,.07), transparent 58%),
    var(--tsk-bg);
}
:root[data-theme="dark"] .tsk.beg{
  --tsk-bg:#0f141a;
  --tsk-bg-2:#151b23;
  --tsk-card:#1a212b;
  --tsk-card-2:#212a35;
  --tsk-ink:#e8edf3;
  --tsk-sub:#a6b2c1;
  --tsk-faint:#7b8797;
  --tsk-line:#2c3542;
  --tsk-line-2:#242c37;
  --tsk-brand:#8fb2d8;
  --tsk-brand-2:#b0cbe8;
  --tsk-brand-soft:rgba(143,178,216,.13);
  --tsk-brand-ink:#a6c4e3;
  --tsk-teal:#4fd1c5;
  --tsk-teal-soft:rgba(79,209,197,.12);
  --tsk-mail:#18212c;
}

.beg-hero{display:grid;grid-template-columns:minmax(0,1fr) 394px;gap:30px;padding:30px 0 24px;align-items:stretch;}
.beg-hero-l{display:flex;flex-direction:column;}
.beg-hero-l>.tsk-hs{flex:1 1 auto;}
.beg-hero-l .tsk-h1 b{color:var(--tsk-brand-ink);}
.beg-hero-r{display:flex;}

/* 写信窗口 */
.beg-compose{width:100%;align-self:start;background:var(--tsk-card);border:1px solid var(--tsk-line);border-radius:13px;box-shadow:var(--tsk-shadow);overflow:hidden;}
.beg-compose-hd{display:flex;align-items:center;gap:10px;padding:11px 16px;background:var(--tsk-mail);color:#eaf1f7;}
.beg-dots{display:inline-flex;gap:4px;}
.beg-dots i{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.35);}
.beg-dots i:first-child{background:#ff8f6d;}
.beg-dots i:nth-child(2){background:#f7c85b;}
.beg-dots i:last-child{background:#4ec9a6;}
.beg-compose-hd b{font-size:12.5px;font-weight:700;letter-spacing:.04em;}
.beg-draft{margin-left:auto;font-size:10px;padding:2px 8px;border-radius:99px;border:1px solid rgba(255,255,255,.28);color:rgba(255,255,255,.7);}
.beg-compose-body{padding:6px 16px 16px;}
.beg-line{display:block;margin-top:10px;position:relative;}
.beg-lab{display:block;font-size:10.5px;font-weight:700;letter-spacing:.05em;color:var(--tsk-faint);margin-bottom:4px;text-transform:uppercase;}
.beg-input{width:100%;border:0;border-bottom:1px solid var(--tsk-line);background:transparent;padding:5px 2px 7px;font-family:var(--tsk-font);font-size:13px;color:var(--tsk-ink);outline:none;transition:border-color .16s;}
.beg-input:focus{border-bottom-color:var(--tsk-teal);}
.beg-input::placeholder{color:var(--tsk-faint);}
.beg-textarea{resize:vertical;min-height:66px;line-height:1.7;border:1px solid var(--tsk-line);border-radius:8px;padding:7px 9px;background:var(--tsk-card-2);margin-top:2px;}
.beg-textarea:focus{border-color:var(--tsk-teal);}
.beg-scene{border:1px solid var(--tsk-line);border-radius:7px;background:var(--tsk-card-2);color:var(--tsk-ink);padding:7px 9px;font-size:12.5px;width:100%;outline:none;}
.beg-row2{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.beg-row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;}
.beg-err{display:none;margin-top:3px;font-size:10.5px;color:var(--tsk-bad);}
.beg-err.show{display:block;}
.beg-opts{margin-top:14px;padding-top:12px;border-top:1px dashed var(--tsk-line);}
.beg-seg{width:100%;}
.beg-seg button{flex:1 1 0;padding:6px 5px;font-size:11.5px;border-radius:6px;}
.beg-acts{display:flex;gap:8px;margin-top:14px;}
.beg-acts .tsk-btn-main{flex:1 1 auto;background:linear-gradient(135deg,var(--tsk-brand),var(--tsk-teal));color:#fff;border-radius:8px;}
.beg-acts .tsk-btn{padding:9px 12px;font-size:12px;}

/* 邮件预览 */
.beg-stage{margin:4px 0 30px;}
.beg-stage-hd{display:flex;justify-content:space-between;align-items:flex-end;gap:14px;flex-wrap:wrap;margin-bottom:12px;}
.beg-stage-sub{margin-top:3px;font-size:12px;color:var(--tsk-faint);}
.beg-tools{display:flex;align-items:center;gap:7px;flex-wrap:wrap;}
.beg-len{font-size:11.5px;color:var(--tsk-sub);background:var(--tsk-card);border:1px solid var(--tsk-line);border-radius:99px;padding:5px 11px;}
.beg-len b{font:800 13px/1 var(--tsk-num);color:var(--tsk-teal);}
.beg-len b.over{color:var(--tsk-bad);}
.beg-tools .tsk-btn{padding:6px 11px;font-size:12px;border-radius:6px;}

.beg-mail{background:var(--tsk-card);border:1px solid var(--tsk-line);border-radius:12px;overflow:hidden;box-shadow:var(--tsk-shadow);}
.beg-mail-bar{display:flex;align-items:center;gap:10px;padding:10px 16px;background:var(--tsk-mail);color:#e9f0f6;}
.beg-mail-bar span{display:inline-flex;gap:4px;}
.beg-mail-bar span i{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.3);}
.beg-mail-bar b{font-size:12px;letter-spacing:.06em;font-weight:700;}
.beg-mail-bar em{margin-left:auto;font-style:normal;font-size:10px;color:rgba(255,255,255,.6);letter-spacing:.14em;}
.beg-mail-head{padding:10px 18px 0;border-bottom:1px solid var(--tsk-line-2);}
.beg-mrow{display:flex;gap:12px;padding:7px 0;border-bottom:1px dashed var(--tsk-line-2);font-size:12px;}
.beg-mrow:last-child{border-bottom:0;padding-bottom:11px;}
.beg-mrow span{flex:0 0 48px;color:var(--tsk-faint);font-size:11px;}
.beg-mrow b{font-weight:600;color:var(--tsk-ink);min-width:0;word-break:break-all;}
.beg-mrow.is-sub b{color:var(--tsk-teal);font-size:14px;}
.beg-mail-body{display:grid;grid-template-columns:1fr 1fr;gap:0;}
.beg-ver{padding:20px 22px 26px;font-size:13.5px;line-height:1.95;color:var(--tsk-ink);min-height:260px;outline:none;}
.beg-ver.cn{border-right:1px solid var(--tsk-line-2);font-family:var(--tsk-font);}
.beg-ver.en{font-family:"Georgia","Times New Roman",serif;font-size:13px;line-height:2.0;}
.beg-ver .beg-p{white-space:pre-line;margin:0 0 12px;}
.beg-ver .beg-h{font-weight:700;margin:0 0 12px;}
.beg-ver .beg-sign{margin-top:18px;padding-top:12px;border-top:1px solid var(--tsk-line-2);font-size:12px;line-height:1.9;color:var(--tsk-sub);white-space:pre-line;}
.beg-ver .beg-empty{color:var(--tsk-faint);font-size:12.5px;text-align:center;padding-top:40px;font-family:var(--tsk-font);}
.beg-mail-foot{padding:10px 18px;border-top:1px solid var(--tsk-line-2);font-size:10.5px;color:var(--tsk-faint);background:var(--tsk-card-2);}

/* 场景卡 */
.beg-scenes{display:grid;grid-template-columns:repeat(auto-fit,minmax(168px,1fr));gap:9px;}
.beg-scene-card{background:var(--tsk-card);border:1px solid var(--tsk-line);border-radius:10px;padding:14px 15px;cursor:pointer;transition:border-color .16s,transform .16s,box-shadow .16s;box-shadow:var(--tsk-shadow-sm);}
.beg-scene-card:hover{transform:translateY(-2px);border-color:var(--tsk-teal);box-shadow:var(--tsk-shadow);}
.beg-scene-card.is-on{border-color:var(--tsk-teal);background:var(--tsk-teal-soft);}
.beg-scene-ic{display:block;font-size:19px;line-height:1;margin-bottom:7px;}
.beg-scene-card b{display:block;font-size:13px;font-weight:800;color:var(--tsk-ink);}
.beg-scene-card small{display:block;font:600 10px/1.4 var(--tsk-num);letter-spacing:.08em;color:var(--tsk-faint);text-transform:uppercase;}
.beg-scene-card p{margin-top:6px;font-size:11.5px;line-height:1.7;color:var(--tsk-sub);}

/* 表格 */
.beg-table-wrap{overflow-x:auto;border:1px solid var(--tsk-line);border-radius:10px;box-shadow:var(--tsk-shadow-sm);}
.beg-table{width:100%;min-width:640px;border-collapse:collapse;background:var(--tsk-card);}
.beg-table th,.beg-table td{padding:10px 14px;font-size:12.5px;line-height:1.7;text-align:left;border-bottom:1px solid var(--tsk-line-2);}
.beg-table thead th{background:var(--tsk-card-2);font-size:11px;font-weight:800;letter-spacing:.06em;color:var(--tsk-brand-ink);}
.beg-table tbody tr:last-child td{border-bottom:0;}
.beg-table tbody tr:hover td{background:var(--tsk-card-2);}
.beg-mono{font-family:var(--tsk-num);font-size:12px;}
.beg-tag{display:inline-block;padding:2px 9px;border-radius:99px;background:var(--tsk-brand-soft);color:var(--tsk-brand-ink);font-size:11px;font-weight:800;}
.beg-bad{color:var(--tsk-faint);text-decoration:line-through;text-decoration-color:rgba(0,0,0,.15);}
.beg-good{color:var(--tsk-teal);font-weight:600;}

/* 部件 */
.beg-parts{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;}
.beg-part{display:grid;grid-template-columns:34px 1fr;column-gap:11px;row-gap:2px;background:var(--tsk-card);border:1px solid var(--tsk-line);border-radius:10px;padding:14px 16px;box-shadow:var(--tsk-shadow-sm);}
.beg-part span{grid-row:span 2;width:34px;height:34px;border-radius:8px;background:var(--tsk-teal-soft);color:var(--tsk-teal);font:800 12px/34px var(--tsk-num);text-align:center;}
.beg-part b{font-size:13px;font-weight:800;color:var(--tsk-ink);}
.beg-part p{font-size:11.5px;line-height:1.7;color:var(--tsk-sub);}

@media (max-width:900px){
  .beg-hero{grid-template-columns:1fr;gap:22px;}
  .beg-mail-body{grid-template-columns:1fr;}
  .beg-ver.cn{border-right:0;border-bottom:1px solid var(--tsk-line-2);}
  .beg-row3{grid-template-columns:1fr 1fr;}
}
@media (max-width:560px){
  .beg-row2,.beg-row3{grid-template-columns:1fr;}
  .beg-acts{flex-wrap:wrap;}
  .beg-acts .tsk-btn-main{flex:1 1 100%;}
}

@media print{
  @page{size:A4;margin:16mm;}
  .beg .tsk-crumb-bar,.beg .beg-hero,.beg .beg-stage-hd,.beg .tsk-sec,.beg .tskb,.beg .tsk-foot{display:none !important;}
  .tsk.beg{background:#fff !important;}
  .beg-mail{border:0;box-shadow:none;}
  .beg-mail-bar{background:#22374d !important;-webkit-print-color-adjust:exact;print-color-adjust:exact;}
  .beg-mail{color:#111;}
  .beg-ver{min-height:0;padding:14px 16px 18px;}
  .beg-ver .beg-p,.beg-ver .beg-h{page-break-inside:avoid;}
  .beg-mrow b{color:#222 !important;}
  .beg-mrow span{color:#555 !important;}
}

/* ====== 表单状态：错误 / 焦点 / 只读 ====== */
.beg-input.bad,
.beg-textarea.bad,
.beg-scene.bad{
  border-color:var(--tsk-bad) !important;
  background:var(--tsk-bad-soft);
}
.beg-input.bad{border-bottom-width:2px;}
.beg-textarea.bad,
.beg-scene.bad{box-shadow:0 0 0 3px color-mix(in srgb,var(--tsk-bad) 12%,transparent);}
.beg-input:disabled,
.beg-textarea:disabled,
.beg-scene:disabled{opacity:.55;cursor:not-allowed;background:var(--tsk-bg-2);}
.beg-input:focus-visible,
.beg-textarea:focus-visible,
.beg-scene:focus-visible{
  outline:2px solid var(--tsk-teal);
  outline-offset:1px;
}
.beg-acts .tsk-btn:focus-visible,
.beg-tools .tsk-btn:focus-visible{
  outline:2px solid var(--tsk-brand);
  outline-offset:2px;
}

/* ====== 按钮交互 ====== */
.beg-acts .tsk-btn{transition:transform .12s ease,box-shadow .16s ease,filter .16s ease;}
.beg-acts .tsk-btn:hover{box-shadow:var(--tsk-shadow-sm);}
.beg-acts .tsk-btn:active{transform:translateY(1px);}
.beg-acts .tsk-btn-main:hover{filter:brightness(1.06);}
.beg-tools .tsk-btn{transition:border-color .15s,color .15s,background .15s;}
.beg-tools .tsk-btn:hover{border-color:var(--tsk-teal);color:var(--tsk-teal);}
.beg-tools .tsk-btn.is-copied{border-color:var(--tsk-ok);color:var(--tsk-ok);}

/* ====== 写信窗口的细节 ====== */
.beg-compose{position:relative;}
.beg-compose::after{
  content:"";
  position:absolute;
  right:14px;
  top:44px;
  width:38px;
  height:38px;
  border:1px solid var(--tsk-line);
  border-radius:50%;
  opacity:.35;
  pointer-events:none;
}
.beg-line:focus-within .beg-lab{color:var(--tsk-teal);}
.beg-line:focus-within .beg-input{border-bottom-color:var(--tsk-teal);}
.beg-input::selection{background:var(--tsk-teal-soft);}
.beg-line .beg-lab b{font-weight:800;color:var(--tsk-sub);}
.beg-opts .tsk-label{margin-bottom:5px;font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;}
.beg-acts .tsk-btn-main{box-shadow:0 6px 16px color-mix(in srgb,var(--tsk-teal) 22%,transparent);}

/* ====== 邮件预览的阅读体验 ====== */
.beg-ver .beg-p:last-child{margin-bottom:0;}
.beg-ver .beg-h b{color:var(--tsk-ink);}
.beg-ver .beg-p b{color:var(--tsk-teal);font-weight:700;}
.beg-ver .beg-p em{font-style:normal;border-bottom:1px dashed var(--tsk-teal);}
.beg-ver .beg-greet{font-weight:700;}
.beg-ver .beg-list{margin:0 0 12px;padding-left:20px;}
.beg-ver .beg-list li{margin-bottom:4px;line-height:1.8;}
.beg-ver .beg-note{
  margin-top:14px;
  padding:8px 11px;
  border-left:3px solid var(--tsk-teal);
  background:var(--tsk-teal-soft);
  font-size:11.5px;
  line-height:1.7;
  color:var(--tsk-sub);
}
.beg-ver.en .beg-p{text-align:justify;hyphens:auto;}
.beg-ver.en .beg-h{letter-spacing:.01em;}

/* ====== 邮件头信息行 ====== */
.beg-mrow.is-to b{color:var(--tsk-ink);}
.beg-mrow.is-cc span,
.beg-mrow.is-cc b{font-size:11.5px;color:var(--tsk-faint);}
.beg-mrow.is-sub b{word-break:break-word;}
.beg-mrow .beg-copy{
  margin-left:auto;
  border:0;
  background:transparent;
  color:var(--tsk-faint);
  font-size:10.5px;
  cursor:pointer;
  padding:2px 4px;
  border-radius:4px;
}
.beg-mrow .beg-copy:hover{color:var(--tsk-teal);background:var(--tsk-teal-soft);}
.beg-mail-head .beg-slim{
  display:flex;
  align-items:center;
  gap:6px;
  padding:6px 0 9px;
  font-size:10.5px;
  color:var(--tsk-faint);
}
.beg-mail-head .beg-slim i{
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--tsk-teal);
}
.beg-mail-foot b{color:var(--tsk-teal);font-weight:700;}

/* ====== 主题长度提示 ====== */
.beg-len.warn{
  border-color:var(--tsk-warn);
  background:var(--tsk-warn-soft);
  color:var(--tsk-warn);
}
.beg-len.ok{
  border-color:color-mix(in srgb,var(--tsk-ok) 40%,var(--tsk-line));
  background:var(--tsk-ok-soft);
}
.beg-len.ok b{color:var(--tsk-ok);}
.beg-len em{font-style:normal;font-weight:700;color:var(--tsk-faint);margin-left:5px;}

/* ====== 场景卡补充 ====== */
.beg-scene-card:focus-visible{
  outline:2px solid var(--tsk-teal);
  outline-offset:2px;
}
.beg-scene-card.is-on b{color:var(--tsk-teal);}
.beg-scene-card.is-on .beg-scene-ic{transform:scale(1.08);}
.beg-scene-ic{transition:transform .18s ease;}
.beg-scene-card .beg-scene-tip{
  display:block;
  margin-top:7px;
  font-size:10.5px;
  color:var(--tsk-faint);
  letter-spacing:.02em;
}
.beg-scene-card .beg-scene-tip b{display:inline;font-size:10.5px;color:var(--tsk-teal);}

/* ====== 表格与部件 ====== */
.beg-table tbody td:first-child{font-weight:700;color:var(--tsk-ink);white-space:nowrap;}
.beg-table tbody tr:nth-child(even) td{background:color-mix(in srgb,var(--tsk-card-2) 52%,transparent);}
.beg-table tbody tr:nth-child(even):hover td{background:var(--tsk-card-2);}
.beg-part{transition:border-color .16s,box-shadow .16s;}
.beg-part:hover{border-color:color-mix(in srgb,var(--tsk-teal) 45%,var(--tsk-line));box-shadow:var(--tsk-shadow-sm);}
.beg-part span{font-variant-numeric:tabular-nums;}
.beg-parts .beg-part:nth-child(2n) span{background:var(--tsk-brand-soft);color:var(--tsk-brand-ink);}

/* ====== 深色模式微调 ====== */
:root[data-theme="dark"] .tsk.beg .beg-compose{box-shadow:0 2px 6px rgba(0,0,0,.5),0 18px 44px rgba(0,0,0,.36);}
:root[data-theme="dark"] .tsk.beg .beg-mail{box-shadow:0 2px 6px rgba(0,0,0,.55),0 22px 52px rgba(0,0,0,.4);}
:root[data-theme="dark"] .tsk.beg .beg-mail-bar,
:root[data-theme="dark"] .tsk.beg .beg-compose-hd{background:#101821;}
:root[data-theme="dark"] .tsk.beg .beg-compose::after{border-color:var(--tsk-line);opacity:.5;}
:root[data-theme="dark"] .tsk.beg .beg-scene-card.is-on{background:var(--tsk-teal-soft);}

/* ====== 断点补充 ====== */
@media (max-width:1180px){
  .beg-mail-body{grid-template-columns:1fr 1fr;}
  .beg-ver{padding:17px 18px 22px;}
  .beg-scenes{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:980px){
  .beg-scenes{grid-template-columns:repeat(2,minmax(0,1fr));}
  .beg-parts{grid-template-columns:1fr 1fr;}
}
@media (max-width:760px){
  .beg-compose-body{padding:4px 13px 14px;}
  .beg-acts{flex-wrap:wrap;}
  .beg-acts .tsk-btn{flex:1 1 92px;text-align:center;}
  .beg-mail-bar em{display:none;}
  .beg-parts{grid-template-columns:1fr;}
}
@media (max-width:480px){
  .beg-scenes{grid-template-columns:1fr;}
  .beg-ver{font-size:13px;line-height:1.85;}
  .beg-tools .tsk-btn{flex:1 1 44%;text-align:center;}
  .beg-len{width:100%;text-align:center;}
}

/* ====== 动效与可访问性 ====== */
@media (prefers-reduced-motion:reduce){
  .beg-scene-card,
  .beg-scene-ic,
  .beg-acts .tsk-btn,
  .beg-tools .tsk-btn,
  .beg-part{transition:none !important;}
  .beg-scene-card:hover,
  .beg-scene-card.is-on .beg-scene-ic{transform:none !important;}
}
.beg-sr{
  position:absolute;
  width:1px;
  height:1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
}
.beg-ver .beg-placeholder-line{
  height:1em;
  margin-bottom:9px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--tsk-line-2),var(--tsk-card-2),var(--tsk-line-2));
}