/* =============================================================================
   「新样式」· 一步一屏全屏卡片（v2.9 布局）
   -----------------------------------------------------------------------------
   v2.9 变更（用户反馈）：
     1. 去掉左侧深色进度轨 → 改为顶部窄进度条
     2. 上一步/下一步按钮紧贴卡片下沿（文档流内），不再固定窗口底部
     3. 第 6 步补真实水印预览 + 三个滑块
   ============================================================================= */

:root{
  --nx-bg:#EEF1F8;
  --nx-card:#FFFFFF;
  --nx-line:#E2E8F4;
  --nx-ink:#26314A;
  --nx-ink-2:#5C6B87;
  --nx-dim:#94A3BE;
  --nx-c1:#4A6CF7;      /* 主色：靛蓝 */
  --nx-c2:#7C5CF0;      /* 渐变副色 */
  --nx-ok:#22B07D;
  --nx-warn:#F0A020;
  --nx-danger:#E24C4B;
  --nx-r:20px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--nx-bg);color:var(--nx-ink);
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",sans-serif;
  font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
.hidden{display:none !important}

.nx-shell{min-height:100vh;display:flex;flex-direction:column}

/* ---------------- 顶部进度条 ---------------- */
.nx-top{
  background:linear-gradient(100deg,#26314A,#3A4A6E);
  color:#fff;padding:11px 22px;
}
.nx-top-in{display:flex;align-items:center;gap:14px;max-width:900px;margin:0 auto}
.nx-brand-mini{font-size:13.5px;font-weight:bold;flex:none;opacity:.92}
.nx-top-step{font-size:13px;font-weight:bold;flex:none;opacity:.85;
  font-variant-numeric:tabular-nums}
.nx-top-bar{flex:1;height:6px;background:rgba(255,255,255,.18);border-radius:3px;overflow:hidden}
.nx-top-bar i{display:block;height:100%;width:12.5%;border-radius:3px;
  background:linear-gradient(90deg,#8FA8FF,#B49AFF);transition:width .3s}
.nx-top-old{color:#9FB0D0;font-size:12.5px;text-decoration:none;flex:none}
.nx-top-old:hover{color:#fff}

/* ---------------- 主区 ---------------- */
.nx-main{
  flex:1;padding:30px 20px 40px;
  display:flex;justify-content:center;align-items:flex-start;
}
.nx-page{width:100%;max-width:860px}

/* 卡片：一次只显示一张 */
.nx-card{
  width:100%;background:var(--nx-card);
  border-radius:var(--nx-r);padding:32px 36px;
  box-shadow:0 10px 40px rgba(38,49,74,.09);
  animation:nxIn .32s cubic-bezier(.22,.68,.36,1);
}
@keyframes nxIn{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:translateY(0)}
}

.nx-step-no{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:bold;color:var(--nx-c1);
  background:#EEF2FE;border-radius:20px;padding:5px 14px;margin-bottom:14px;
}
.nx-h1{font-size:25px;font-weight:bold;margin:0 0 8px;line-height:1.35}
.nx-lead{font-size:15.5px;color:var(--nx-ink-2);margin:0 0 22px;line-height:1.7}
.nx-lead b{color:var(--nx-c1)}

/* ---------------- 操作按钮：紧贴卡片 ---------------- */
.nx-foot{
  display:flex;align-items:center;gap:15px;
  margin-top:16px;
}
.nx-foot-hint{flex:1;min-width:0;font-size:14px;color:var(--nx-ink-2);line-height:1.5;text-align:right}
.nx-foot-hint b{color:var(--nx-warn)}
.nx-btn{
  border:none;border-radius:13px;padding:13px 28px;font-size:16px;font-weight:bold;
  cursor:pointer;font-family:inherit;transition:.17s;flex:none;
}
.nx-btn-ghost{background:#E9EDF6;color:#5C6B87}
.nx-btn-ghost:hover{background:#DDE4F0}
.nx-btn-ghost:disabled{opacity:.45;pointer-events:none}
.nx-btn-go{
  background:linear-gradient(135deg,var(--nx-c1),var(--nx-c2));color:#fff;
  box-shadow:0 6px 18px rgba(74,108,247,.3);
}
.nx-btn-go:hover{filter:brightness(1.07);transform:translateY(-1px)}
.nx-btn-go.locked{background:#C8D2E6;box-shadow:none;cursor:not-allowed;transform:none}
.nx-btn-fin{background:linear-gradient(135deg,#38C08A,#1D8A5F);box-shadow:0 6px 18px rgba(29,138,95,.26)}

/* ---------------- 通用控件 ---------------- */
.nx-file-drop{
  border:2.5px dashed #C3CFE8;border-radius:16px;background:#F8FAFF;
  padding:38px 24px;text-align:center;cursor:pointer;transition:.2s;
}
.nx-file-drop:hover,.nx-file-drop.over{border-color:var(--nx-c1);background:#EEF2FE}
.nx-file-drop .ico{font-size:46px;line-height:1;margin-bottom:10px}
.nx-file-drop .t1{font-size:19px;font-weight:bold;color:var(--nx-c1);margin-bottom:5px}
.nx-file-drop .t2{font-size:14px;color:var(--nx-ink-2)}
.nx-file-drop .t3{font-size:13px;color:var(--nx-dim);margin-top:5px}

.nx-files{display:flex;flex-direction:column;gap:9px;margin-top:16px;max-height:300px;overflow-y:auto}
.nx-frow{
  display:flex;align-items:center;gap:11px;background:#F8FAFF;
  border:1px solid var(--nx-line);border-radius:13px;padding:11px 14px;font-size:15px;
}
.nx-frow .seq{
  width:26px;height:26px;flex:none;border-radius:8px;background:#E4EAFB;
  color:var(--nx-c1);font-size:13px;font-weight:bold;
  display:flex;align-items:center;justify-content:center;
}
.nx-frow .nm{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;
  white-space:nowrap;font-weight:600}
.nx-frow .sz{flex:none;white-space:nowrap;color:var(--nx-dim);font-size:13.5px}
.nx-frow .rm{
  flex:none;border:none;background:#FFEDEE;color:#D6565A;width:30px;height:30px;
  border-radius:9px;cursor:pointer;font-size:16px;
}
.nx-frow .rm:hover{background:#FFD9DB}

/* 选项组：大块可点卡片 */
.nx-opts{display:flex;flex-direction:column;gap:11px;margin-top:6px}
.nx-opt{
  display:flex;align-items:flex-start;gap:13px;background:#F8FAFF;
  border:2px solid var(--nx-line);border-radius:14px;padding:15px 17px;
  cursor:pointer;transition:.16s;
}
.nx-opt:hover{border-color:#B9C8EA;background:#F3F7FF}
.nx-opt.on{border-color:var(--nx-c1);background:#EEF2FE;box-shadow:0 0 0 3px rgba(74,108,247,.1)}
.nx-opt input{margin-top:4px;width:19px;height:19px;accent-color:var(--nx-c1);flex:none;cursor:pointer}
.nx-opt .t{font-size:16px;font-weight:bold;display:block;line-height:1.45}
.nx-opt .d{font-size:13.5px;color:var(--nx-ink-2);display:block;margin-top:3px;line-height:1.6}
.nx-opt.on .t{color:var(--nx-c1)}

/* 打印权限单选：两卡横排 */
.nx-print-pick{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.nx-print-opt{
  display:flex;align-items:flex-start;gap:11px;background:#F8FAFF;
  border:2px solid var(--nx-line);border-radius:14px;padding:13px 15px;
  cursor:pointer;transition:.16s;
}
.nx-print-opt:hover{border-color:#B9C8EA}
.nx-print-opt.on{border-color:var(--nx-c1);background:#EEF2FE;box-shadow:0 0 0 3px rgba(74,108,247,.1)}
.nx-print-opt input{margin-top:3px;width:18px;height:18px;accent-color:var(--nx-c1);flex:none;cursor:pointer}
.nx-print-opt .t{font-size:15px;font-weight:bold;display:block;line-height:1.4}
.nx-print-opt.on .t{color:var(--nx-c1)}
.nx-print-opt .d{font-size:12.5px;color:var(--nx-ink-2);display:block;margin-top:2px;line-height:1.5}

/* 表单 */
.nx-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.nx-field{display:flex;flex-direction:column;gap:7px}
.nx-field.wide{grid-column:1/-1}
.nx-field label{font-size:14.5px;font-weight:bold}
.nx-field .hint{font-weight:normal;color:var(--nx-dim);font-size:13px}
.nx-field input{
  padding:12px 14px;border:2px solid var(--nx-line);border-radius:12px;
  font-size:15.5px;font-family:inherit;color:var(--nx-ink);background:#FBFCFE;transition:.16s;
}
.nx-field input:focus{outline:none;border-color:var(--nx-c1);background:#fff;
  box-shadow:0 0 0 3px rgba(74,108,247,.1)}

/* 下拉选择 */
.nx-select{
  padding:11px 13px;border:2px solid var(--nx-line);border-radius:12px;
  font-size:15px;font-family:inherit;color:var(--nx-ink);background:#FBFCFE;
  cursor:pointer;transition:.16s;width:100%;
}
.nx-select:focus{outline:none;border-color:var(--nx-c1);background:#fff;
  box-shadow:0 0 0 3px rgba(74,108,247,.1)}

/* 滑块 */
.nx-slider{
  -webkit-appearance:none;appearance:none;width:100%;height:8px;border-radius:5px;
  background:#E4EAFB;outline:none;margin:6px 0;cursor:pointer;
}
.nx-slider::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;width:22px;height:22px;border-radius:50%;
  background:linear-gradient(135deg,var(--nx-c1),var(--nx-c2));
  border:3px solid #fff;box-shadow:0 2px 8px rgba(74,108,247,.35);cursor:grab;
}
.nx-slider::-webkit-slider-thumb:active{cursor:grabbing;transform:scale(1.1)}
.nx-slider::-moz-range-thumb{
  width:18px;height:18px;border-radius:50%;
  background:linear-gradient(135deg,var(--nx-c1),var(--nx-c2));
  border:3px solid #fff;box-shadow:0 2px 8px rgba(74,108,247,.35);cursor:grab;
}

/* 水印预览：左预览框 + 右滑块 */
.nx-pv-grid{
  display:grid;grid-template-columns:minmax(260px,330px) 1fr;gap:22px;
  background:#F8FAFF;border:1.5px solid var(--nx-line);border-radius:16px;padding:20px;
}
.nx-pv-box{
  position:relative;height:400px;background:#fff;border:1px solid var(--nx-line);
  border-radius:10px;overflow:hidden;
}
.nx-pv-box span{position:absolute}
.nx-pv-ctl{display:flex;flex-direction:column;gap:14px;min-width:0}

.nx-pwdbox{
  grid-column:1/-1;background:#EEF2FE;border:1.5px solid #CBDAFB;
  border-radius:14px;padding:14px 17px;
}
.nx-pwdbox .k{font-size:13.5px;color:var(--nx-ink-2)}
.nx-pwd{font-size:26px;font-weight:bold;color:var(--nx-c1);
  letter-spacing:3px;font-family:Consolas,monospace}
.nx-pwd.bad{color:var(--nx-dim);letter-spacing:2px}
.nx-pwd-hint{font-size:13.5px;margin-left:10px;padding:3px 10px;border-radius:8px}
.nx-pwd-hint.warn{background:#FFF6E3;color:#946A00}
.nx-pwd-hint.ok{background:#E7F7F0;color:#1D8A5F}

/* 摘要行 */
.nx-sum{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-top:4px}
.nx-sum-i{background:#F8FAFF;border:1px solid var(--nx-line);border-radius:13px;padding:13px 16px}
.nx-sum-i .k{font-size:12.5px;color:var(--nx-dim);margin-bottom:3px}
.nx-sum-i .v{font-size:15.5px;font-weight:bold;color:var(--nx-c1);
  overflow-wrap:anywhere;line-height:1.45}

/* 密码突出展示 */
.nx-pwd-hero{background:#EEF2FE;border-radius:16px;padding:20px;text-align:center}
.nx-pwd-hero .cap{font-size:13px;color:var(--nx-ink-2);letter-spacing:4px;margin-bottom:6px}
.nx-pwd-hero .v{font-size:38px;font-weight:bold;color:var(--nx-c1);
  letter-spacing:6px;font-family:Consolas,monospace;line-height:1.2}

/* 转发文案 */
.nx-share{
  background:#F8FAFF;border:1.5px solid var(--nx-line);border-radius:14px;
  padding:16px 18px;font-size:15px;white-space:pre-wrap;line-height:1.8;
  max-height:230px;overflow-y:auto;
}

/* 二维码 */
.nx-qr-wrap{display:flex;gap:26px;align-items:center;flex-wrap:wrap}
.nx-qr{
  width:200px;height:200px;flex:none;background:#fff;border:1.5px solid var(--nx-line);
  border-radius:16px;padding:11px;
}
.nx-qr img{width:100%;height:100%;display:block}
.nx-qr-side{flex:1;min-width:230px}
.nx-qr-tip{font-size:14px;color:var(--nx-ink-2);margin-top:10px}
.nx-qr-tip.urgent{color:var(--nx-danger);font-weight:bold}

/* 风险提示 */
.nx-risk{background:#FFF9EC;border:2px solid #FFDFA3;border-radius:16px;padding:22px 24px}
.nx-risk h3{margin:0 0 13px;font-size:18px;color:#8A5A00}
.nx-risk ul{margin:0 0 18px;padding-left:21px;font-size:14.5px;color:#6B4500;line-height:1.85}
.nx-risk ul b{color:#8A5A00}
.nx-ack{
  display:flex;align-items:center;gap:11px;background:#fff;border:2px solid #FFDFA3;
  border-radius:13px;padding:14px 17px;cursor:pointer;transition:.16s;
}
.nx-ack:hover{background:#FFFCF5}
.nx-ack.on{border-color:var(--nx-ok);background:#EAF8F2}
.nx-ack input{width:21px;height:21px;accent-color:var(--nx-ok);cursor:pointer;flex:none}
.nx-ack span{font-size:15.5px;font-weight:bold;color:#8A5A00}
/* 勾选文案里的协议/隐私链接：与 nx-risk 底色区分、可辨识、hover 反馈 */
.nx-doclink{
  color:#B05A00;text-decoration:underline;text-underline-offset:3px;
  font-weight:bold;transition:.15s;
}
.nx-doclink:hover{color:var(--nx-c1);background:rgba(255,255,255,.6)}
.nx-ack.on span{color:#1D8A5F}

/* 结果文件行 */
.nx-res{display:flex;flex-direction:column;gap:9px}
.nx-resfile{
  display:flex;align-items:center;gap:11px;background:#F8FAFF;
  border:1px solid var(--nx-line);border-radius:13px;padding:12px 15px;
}
.nx-resfile .nm{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;
  white-space:nowrap;font-weight:600;font-size:15px}
.nx-resfile .sz{flex:none;white-space:nowrap;color:var(--nx-dim);font-size:13.5px}
.nx-dl{
  flex:none;white-space:nowrap;display:inline-flex;align-items:center;gap:5px;
  background:#EEF2FE;color:var(--nx-c1);border:1.5px solid #CBDAFB;
  border-radius:10px;padding:8px 15px;font-size:14px;font-weight:bold;
  text-decoration:none;font-family:inherit;cursor:pointer;
}
.nx-dl:hover{background:#E2EAFD}

/* 复制按钮组 */
.nx-copyrow{display:flex;gap:11px;flex-wrap:wrap;margin-top:14px}
.nx-copy{
  background:#F8FAFF;color:var(--nx-ink-2);border:1.5px solid var(--nx-line);
  border-radius:11px;padding:10px 17px;font-size:14px;font-weight:bold;
  cursor:pointer;font-family:inherit;transition:.16s;
}
.nx-copy:hover{background:#EEF2FE;color:var(--nx-c1);border-color:#CBDAFB}

/* 处理中 */
.nx-busy{text-align:center;padding:40px 20px}
.nx-spin{
  width:46px;height:46px;margin:0 auto 18px;border-radius:50%;
  border:4px solid #E4EAFB;border-top-color:var(--nx-c1);
  animation:nxSpin .8s linear infinite;
}
@keyframes nxSpin{to{transform:rotate(360deg)}}
.nx-busy .t{font-size:17px;font-weight:bold;margin-bottom:6px}
.nx-busy .d{font-size:14px;color:var(--nx-ink-2)}
.nx-prog{max-width:380px;margin:18px auto 0;height:8px;background:#E4EAFB;border-radius:5px;overflow:hidden}
.nx-prog i{display:block;height:100%;width:0;border-radius:5px;
  background:linear-gradient(90deg,var(--nx-c1),var(--nx-c2));transition:width .3s}

/* 失败提示 */
.nx-err{background:#FFEDEE;border:1.5px solid #FFCDCF;border-radius:13px;
  padding:14px 17px;color:#B93A3E;font-size:14.5px;line-height:1.7;margin-top:14px}

/* ---------------- 底部小字 ---------------- */
.nx-bottom{
  padding:20px 20px 26px;text-align:center;
  color:var(--nx-dim);font-size:13px;line-height:1.8;
}
.nx-bottom a{color:#7C93C8;text-decoration:none}
.nx-bottom a:hover{color:var(--nx-c1);text-decoration:underline}

/* ---------------- 窄屏 ---------------- */
@media (max-width:760px){
  .nx-brand-mini{display:none}
  .nx-main{padding:18px 14px 30px}
  .nx-card{padding:22px 20px;border-radius:16px}
  .nx-h1{font-size:20px}
  .nx-lead{font-size:14.5px;margin-bottom:18px}
  .nx-grid{grid-template-columns:1fr}
  .nx-foot{flex-wrap:wrap;gap:10px}
  .nx-foot-hint{display:none}
  .nx-btn{padding:13px 22px;font-size:15.5px;flex:1}
  .nx-foot .nx-btn-go{flex:1.4}
  /* 预览改上下排 */
  .nx-pv-grid{grid-template-columns:1fr}
  .nx-pv-box{height:320px}
  .nx-qr{width:160px;height:160px}
  .nx-pwd-hero .v{font-size:30px;letter-spacing:4px}
}