/* ============ TZG字帖 - 复刻 Z2H 视觉 ============ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --content-width:1200px;
  --bg:#f1f5f9;
  --border:#e2e8f0;
  --slate-950:#020617;
  --slate-900:#0f172a;
  --slate-700:#334155;
  --slate-600:#475569;
  --slate-500:#64748b;
  --slate-300:#cbd5e1;
  --slate-200:#e2e8f0;
  --amber-700:#b45309;
  --amber-800:#92400e;
  --amber-50:#fffbeb;
  --amber-200:#fde68a;
  --pink-400:#f472b6;
  --primary:#0f172a;
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--slate-950);line-height:1.6;-webkit-font-smoothing:antialiased}

/* ---------- 顶栏 ---------- */
.topbar{position:sticky;top:0;z-index:40;width:100%;border-bottom:1px solid rgba(226,232,240,.8);background:#fff}
.topbar-inner{max-width:var(--content-width);margin:0 auto;height:56px;display:flex;align-items:center;padding:0 20px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;margin-right:24px;color:var(--slate-950);font-weight:800;font-size:18px;letter-spacing:-.5px}
.logo .mark{width:30px;height:30px;border-radius:8px;background:var(--slate-950);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:900}
.logo .mark em{font-style:normal;color:#fbbf24}
.logo small{font-size:10px;font-weight:500;color:var(--slate-500);display:block;line-height:1;margin-top:1px}
.nav{display:flex;align-items:center;justify-content:center;gap:8px;flex:1}
.nav-item{display:inline-flex;align-items:center;gap:4px;height:36px;padding:0 14px;border-radius:8px;font-size:14px;font-weight:500;color:var(--slate-500);text-decoration:none;cursor:pointer;background:none;border:none;transition:all .15s;position:relative}
.nav-item:hover{background:#f1f5f9;color:var(--slate-950)}
.nav-item.active{background:#f1f5f9;color:var(--slate-950)}
.nav-item .caret{width:12px;height:12px;transition:transform .2s}
.nav-item.open .caret{transform:rotate(180deg)}
.dropdown{position:absolute;top:calc(100% + 6px);left:0;min-width:200px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 10px 30px rgba(2,6,23,.12);padding:6px;display:none;z-index:60}
.nav-item.open .dropdown{display:block}
.dropdown a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--slate-700);text-decoration:none}
.dropdown a:hover{background:#f8fafc;color:var(--slate-950)}
.dropdown a small{color:var(--slate-400);font-size:12px}
.nav-spacer{flex:0;display:none}
.donate-btn{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 16px;border-radius:8px;font-size:14px;font-weight:500;color:var(--slate-600);text-decoration:none;transition:all .15s}
.donate-btn:hover{background:#f1f5f9;color:var(--slate-950)}
.donate-btn .heart{font-size:16px;margin-top:-1px}
.donate-btn .txt{letter-spacing:.05em;color:var(--pink-400);font-weight:600}

/* ---------- 首页 Hero ---------- */
.hero-wrap{position:relative;overflow:hidden;background:#f8fafc}
.hero-grid-bg{pointer-events:none;position:absolute;inset:0;height:620px;background-image:linear-gradient(rgba(148,163,184,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.12) 1px,transparent 1px);background-size:32px 32px;-webkit-mask-image:linear-gradient(to bottom,black 55%,transparent);mask-image:linear-gradient(to bottom,black 55%,transparent)}
.hero{max-width:var(--content-width);margin:0 auto;position:relative;padding:56px 20px 64px;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:500px}
.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--amber-200);background:var(--amber-50);border-radius:999px;padding:6px 12px;font-size:12px;font-weight:600;color:var(--amber-800)}
.badge svg{width:14px;height:14px}
.hero h1{margin-top:28px;font-size:40px;line-height:1.15;font-weight:700;letter-spacing:-.02em;color:var(--slate-950)}
.hero h1 .sub{display:block;color:var(--slate-500)}
.hero p{margin:24px auto 0;max-width:640px;font-size:16px;line-height:1.8;color:var(--slate-600)}
.hero-btns{margin-top:36px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 28px;border-radius:999px;font-size:16px;font-weight:500;text-decoration:none;transition:all .2s;border:none;cursor:pointer}
.btn-dark{background:var(--primary);color:#fff}
.btn-dark:hover{background:#1e293b}
.btn-ghost{background:rgba(255,255,255,.8);border:1px solid var(--border);color:var(--slate-950);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:#f1f5f9}
.btn svg{width:16px;height:16px}

/* ---------- 首页工具区块 ---------- */
.tools-section{max-width:var(--content-width);margin:0 auto;padding:0 20px 20px;background:rgba(248,250,252,.8);border-radius:24px 24px 0 0}
.section-row{display:grid;grid-template-columns:1fr;gap:24px;border-top:1px solid rgba(226,232,240,.8);padding:40px 0}
@media(min-width:1024px){.section-row{grid-template-columns:240px 1fr;gap:40px}}
.section-head .eyebrow{font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--amber-700)}
.section-head h2{margin-top:8px;font-size:24px;font-weight:700;letter-spacing:-.01em;color:var(--slate-950)}
.section-head p{margin-top:12px;max-width:320px;font-size:14px;line-height:1.6;color:var(--slate-500)}
.tool-grid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:640px){.tool-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1280px){.tool-grid.cols3{grid-template-columns:repeat(3,1fr)}}
.tool-card{display:flex;flex-direction:column;justify-content:space-between;min-height:128px;padding:20px;border:1px solid rgba(226,232,240,.9);border-radius:16px;background:#fff;text-decoration:none;transition:all .2s}
.tool-card:hover{border-color:var(--slate-400)}
.tool-card .row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.tool-card .name{font-size:15px;font-weight:600;color:var(--slate-950)}
.tool-card .arrow{width:16px;height:16px;color:var(--slate-300);transition:all .2s;flex-shrink:0}
.tool-card:hover .arrow{transform:translateX(2px);color:var(--slate-700)}
.tool-card p{margin-top:16px;font-size:14px;line-height:1.6;color:var(--slate-500)}

/* ---------- 工具页 ---------- */
.tool-main{max-width:var(--content-width);margin:0 auto;padding:20px;display:flex;gap:16px}
.tool-left{flex:0 0 260px;min-width:220px;position:sticky;top:72px;align-self:flex-start;max-height:calc(100vh - 88px);overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding-bottom:16px;scrollbar-width:thin}
@media(max-width:900px){
  .tool-main{flex-direction:column}
  .tool-left{position:static;flex:none;width:100%;max-height:none}
  .tool-right{padding:16px!important}
}
.input-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px}
.input-card label{font-size:13px;font-weight:600;color:var(--slate-700);display:block;margin-bottom:8px}
.tool-textarea{width:100%;min-height:120px;padding:12px;border:1.5px solid var(--border);border-radius:10px;font-size:15px;line-height:1.7;font-family:inherit;resize:vertical;outline:none;transition:border .2s;background:#fff;color:var(--slate-950)}
.tool-textarea:focus{border-color:var(--slate-700);box-shadow:0 0 0 3px rgba(15,23,42,.08)}
.btn-bar{display:flex;gap:8px;margin-top:10px}
.btn-sm{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:6px;height:40px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;border:none;transition:all .15s}
.btn-export{background:var(--primary);color:#fff}
.btn-export:hover{background:#1e293b}
.btn-print{background:#fff;color:var(--slate-700);border:1px solid var(--border)}
.btn-print:hover{background:#f1f5f9}
/* 设置面板 */
.panel{background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px}
.panel h3{font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--slate-400);margin-bottom:12px}
.check-list{display:flex;flex-direction:column;gap:10px}
.check-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--slate-700);cursor:pointer;user-select:none}
.check-item input[type=checkbox]{width:16px;height:16px;accent-color:var(--slate-900);cursor:pointer}
.setting{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:7px 0;border-bottom:1px solid #f1f5f9}
.setting:last-child{border-bottom:none}
.setting label{font-size:13px;color:var(--slate-600);white-space:nowrap}
.setting select{height:32px;padding:0 8px;border:1px solid var(--border);border-radius:8px;font-size:13px;background:#fff;color:var(--slate-900);outline:none;cursor:pointer;max-width:130px}
.setting input[type=number]{width:64px;height:32px;padding:0 8px;border:1px solid var(--border);border-radius:8px;font-size:13px;outline:none;text-align:right}
.setting input[type=number]:focus,.setting select:focus{border-color:var(--slate-700)}
.setting input[type=color]{width:34px;height:32px;border:1px solid var(--border);border-radius:8px;padding:2px;cursor:pointer;background:#fff}
.setting .unit{font-size:12px;color:var(--slate-400)}
.margin-input{width:130px!important;text-align:left!important}
/* 形状选择（控笔） */
.shape-picker{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.shape-picker button{height:36px;border:1.5px solid var(--border);border-radius:8px;background:#fff;font-size:14px;font-weight:600;color:var(--slate-600);cursor:pointer;transition:all .15s}
.shape-picker button:hover{border-color:var(--slate-500)}
.shape-picker button.active{border-color:var(--slate-900);background:var(--slate-900);color:#fff}
/* 韵母快捷输入 */
.quick-pinyin{display:flex;flex-wrap:wrap;gap:4px;margin-top:8px}
.quick-pinyin button{min-width:34px;height:28px;padding:0 6px;border:1px solid var(--border);border-radius:6px;background:#fff;font-size:13px;color:var(--slate-700);cursor:pointer;transition:all .12s}
.quick-pinyin button:hover{border-color:var(--slate-500);background:#f8fafc}
/* 预览区 */
.tool-right{flex:1;min-width:0;background:#fff;border:1px solid var(--border);border-radius:14px;padding:32px;overflow:hidden}
.print-area{width:210mm;margin:0 auto;background:#fff}
.page{width:210mm;min-height:280mm;padding:0;position:relative;page-break-after:always;overflow:hidden}
.page:last-child{page-break-after:auto}
.sheet{width:100%;height:100%}
/* 控笔页页面网格 */
.control-grid{display:grid;gap:0;width:100%}
.control-cell{border:1px solid #e2e8f0;position:relative;display:flex;align-items:center;justify-content:center}
/* 英文四线三格 */
.en-sheet{display:flex;flex-direction:column;gap:0}
.en-row{display:flex;align-items:flex-end;justify-content:center;gap:0}
.en-cell{position:relative;border-bottom:2px solid #334155;height:calc(var(--rh)*1.6);display:flex;align-items:flex-end;justify-content:center}
.en-cell::before{content:"";position:absolute;left:0;right:0;bottom:55%;border-bottom:1px solid #cbd5e1}
.en-cell::after{content:"";position:absolute;left:0;right:0;bottom:22%;border-bottom:1px solid #cbd5e1}
.en-cell .ch{position:relative;z-index:1;font-family:"Times New Roman",Georgia,serif;font-style:italic;line-height:1;padding-bottom:3%}
.en-cell .ch.upper{color:#0f172a}
.en-cell .ch.trace{color:rgba(15,23,42,.25)}
.en-cell .ch.blank{color:transparent}
/* 汉字字帖 */
.hz-sheet{display:flex;flex-direction:column;gap:var(--gap)}
.hz-row{display:flex;justify-content:center;gap:0}
.hz-cell{position:relative;width:var(--cell);height:var(--cell);flex-shrink:0}
.hz-cell .gridlines{position:absolute;inset:0;pointer-events:none}
.hz-cell .ch{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:"KaiTi","STKaiti","Kaiti SC","楷体","SimSun",serif;line-height:1}
.hz-cell .ch.trace{color:rgba(15,23,42,.22)}
.hz-cell .ch.solid{color:#0f172a}
.hz-cell .ch.blank{color:transparent}
.hz-cell .stroke-num{position:absolute;font-size:8px;color:#dc2626;z-index:2;pointer-events:none}
.hz-cell .pinyin-mark{position:absolute;top:-16px;left:0;right:0;text-align:center;font-size:10px;color:#475569;z-index:2}
.hz-cell .first-mark,.en-cell .first-mark{position:absolute;top:0;left:0;width:12px;height:12px;background:#f59e0b;border-radius:50%;z-index:2;box-shadow:0 0 0 2px rgba(255,255,255,.6)}
.hz-cell.highlight{background:#fffbeb}
/* 空行 */
.blank-row{display:flex;justify-content:center}
.blank-row .hz-cell{border:1px solid transparent}
/* 数字/拼音字帖 */
.np-cell{position:relative;border-bottom:2px solid #334155;display:flex;align-items:flex-end;justify-content:center}
.np-cell::before{content:"";position:absolute;left:0;right:0;bottom:55%;border-bottom:1px solid #cbd5e1}
.np-cell::after{content:"";position:absolute;left:0;right:0;bottom:22%;border-bottom:1px solid #cbd5e1}
.np-cell .ch{position:relative;z-index:1;font-family:"Times New Roman",Georgia,serif;font-style:italic;line-height:1;padding-bottom:3%}
.np-cell .ch.trace{color:rgba(15,23,42,.22)}
.np-cell .ch.solid{color:#0f172a}

/* ---------- Footer ---------- */
.footer{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:16px;font-size:12px;color:var(--slate-600);background:rgba(2,6,23,.04);border-top:1px solid var(--border);text-align:center}
.footer a{color:var(--slate-600);text-decoration:none}
.footer a:hover{text-decoration:underline}

/* ---------- 打印 ---------- */
@media print{
  body{background:#fff}
  .topbar,.tool-left,.btn-bar,.footer,.no-print{display:none!important}
  .tool-main{display:block;padding:0;max-width:none}
  .tool-right{border:none;padding:0!important;overflow:visible}
  .print-area{width:100%;margin:0}
  .page{min-height:auto;page-break-after:always}
  @page{size:A4;margin:0}
}