.calc-wrap{max-width:900px;margin:0 auto}
.calc-head .lead{color:#94a3b8;font-size:14.5px;margin:0 0 6px}
.calc-card{background:#0b1220;border:1px solid #1e293b;border-radius:12px;padding:22px;margin:0 0 20px}
.calc-card > h2{font-size:16px;color:#fff;margin:0 0 16px;padding:0 0 12px;border-bottom:1px solid #1e293b}
.calc-card > h2 .num{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:6px;background:rgba(6,182,212,.15);color:#22d3ee;font-size:12px;font-weight:700;margin-right:8px;vertical-align:2px}
.field{margin:0 0 14px}
.field label{display:block;font-size:13px;color:#94a3b8;margin:0 0 6px}
.field input,.field select{width:100%;background:#020617;border:1px solid #1e293b;border-radius:8px;color:#e2e8f0;padding:10px 12px;font-size:14px;font-family:inherit}
.field select{-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='3'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:34px}
.field input:focus,.field select:focus{outline:none;border-color:#06b6d4;box-shadow:0 0 0 3px rgba(6,182,212,.12)}
.field input.chg{border-color:#f59e0b;background:#1a1206}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
@media (max-width:640px){.cols{grid-template-columns:1fr}}
.res{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:640px){.res{grid-template-columns:1fr}}
.res-item{background:#020617;border:1px solid #1e293b;border-radius:10px;padding:14px}
.res-item .k{font-size:12px;color:#64748b;margin:0 0 6px}
.res-item .v{font-size:21px;font-weight:700;color:#22d3ee;font-family:ui-monospace,Consolas,monospace;line-height:1.2}
.res-item .v small{font-size:12px;color:#64748b;font-weight:400;margin-left:3px}
.res-item .v .or{font-style:normal;font-size:12px;color:#64748b;font-weight:400;margin-right:5px}
.res-item.span2{grid-column:1/-1}
.res-item .note{font-size:12.5px;color:#94a3b8;line-height:1.6;margin:6px 0 0}
.res-item .note b{color:#67e8f9}
.hint{font-size:12px;color:#64748b;margin:12px 0 0;line-height:1.7}
.btn{display:inline-block;background:#06b6d4;color:#001018;border:none;border-radius:8px;padding:11px 22px;font-size:14px;font-weight:700;cursor:pointer;font-family:inherit}
.btn:hover{background:#22d3ee}
.btn.ghost{background:transparent;color:#67e8f9;border:1px solid #164e63}
.btn.ghost:hover{background:rgba(6,182,212,.1)}
.btn[disabled]{opacity:.6;cursor:default}
.cta2{margin:18px 0 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.cta2 .tip{font-size:12px;color:#64748b}
/* 2026-10-22：咨询单里的「或直接电话 / 固话」提示按用户要求加大字号 */
.cta2 .tip-big{font-size:16px;color:#94a3b8;line-height:1.7}
#calc-msg{margin:14px 0 0;font-size:13px;padding:12px 14px;border-radius:8px;display:none}
#calc-msg.ok{display:block;background:rgba(16,185,129,.1);border:1px solid rgba(16,185,129,.3);color:#6ee7b7}
#calc-msg.err{display:block;background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.3);color:#fca5a5}
/* 高级参数折叠面板 */
.adv{margin:6px 0 0;border:1px solid #1e293b;border-radius:10px;background:#020617;overflow:hidden}
.adv > summary{cursor:pointer;padding:13px 16px;font-size:13.5px;color:#67e8f9;font-weight:600;list-style:none;display:flex;align-items:center;justify-content:space-between}
.adv > summary::-webkit-details-marker{display:none}
.adv > summary::after{content:'展开 ▾';font-size:11.5px;color:#475569;font-weight:400}
.adv[open] > summary::after{content:'收起 ▴'}
.adv[open] > summary{border-bottom:1px solid #1e293b}
/* 不折叠的高级参数：常驻展开的标题行 */
.adv-head{padding:13px 16px;font-size:13.5px;color:#67e8f9;font-weight:600;border-bottom:1px solid #1e293b;display:flex;align-items:center;justify-content:space-between}
.adv-head::after{content:'按项目经验可调整';font-size:11.5px;color:#475569;font-weight:400}
.adv-body{padding:16px}
#logic{margin-top:12px}
.adv-body .cols{margin:0}
.adv-note{font-size:12.5px;color:#94a3b8;line-height:1.75;margin:0 0 16px;padding:10px 12px;background:rgba(6,182,212,.05);border-left:2px solid #164e63;border-radius:0 6px 6px 0}
.adv-foot{border-top:1px solid #1e293b;margin-top:16px;padding-top:14px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.adv-foot .state{font-size:12px;color:#64748b}
.adv-foot .state b{color:#f59e0b}
/* 冷负荷构成 */
.bd{margin:14px 0 0;border:1px solid #1e293b;border-radius:10px;overflow:hidden}
.bd-row{display:flex;justify-content:space-between;gap:12px;padding:9px 14px;font-size:13px;border-bottom:1px solid #131c2e}
.bd-row:last-child{border-bottom:none}
.bd-row .n{color:#94a3b8}
.bd-row .n em{font-style:normal;color:#475569;font-size:11.5px;margin-left:6px}
.bd-row .v{color:#cbd5e1;font-family:ui-monospace,Consolas,monospace;white-space:nowrap}
.bd-row.sum{background:rgba(6,182,212,.06)}
.bd-row.sum .n{color:#e2e8f0;font-weight:600}
.bd-row.sum .v{color:#22d3ee;font-weight:700}
.copy h2{font-size:17px;color:#fff;margin:26px 0 10px}
.copy h3{font-size:15px;color:#67e8f9;margin:20px 0 8px}
.copy p{font-size:14.5px;color:#94a3b8;margin:0 0 12px;line-height:1.85}
.copy ul{margin:0 0 14px;padding-left:20px}
.copy li{font-size:14.5px;color:#94a3b8;margin:6px 0;line-height:1.8}
.copy b{color:#cbd5e1}
.copy table{width:100%;border-collapse:collapse;font-size:13.5px;margin:0 0 16px}
.copy th,.copy td{padding:8px 10px;border:1px solid #1e293b;text-align:left}
.copy th{background:#0f172a;color:#fff;font-weight:600}
.copy td{color:#94a3b8}
.formrow{margin:0 0 14px}
.formrow label{display:block;font-size:13px;color:#94a3b8;margin:0 0 6px}
.formrow label i{color:#f87171;font-style:normal}
.formrow input,.formrow textarea{width:100%;background:#020617;border:1px solid #1e293b;border-radius:8px;color:#e2e8f0;padding:11px 12px;font-size:14px;font-family:inherit}
.formrow textarea{min-height:88px;resize:vertical;line-height:1.7}
.formrow input:focus,.formrow textarea:focus{outline:none;border-color:#06b6d4;box-shadow:0 0 0 3px rgba(6,182,212,.12)}

  /* ===== 2026-10-21 按 /calculator 版式重做时的补充 ===== */
  /* _tool.js 输出的构成表是 .bd .row 结构，映射成原设计的 .bd-row 外观 */
  .bd .row{display:flex;justify-content:space-between;gap:12px;padding:9px 14px;font-size:13px;border-bottom:1px solid #131c2e;color:#94a3b8}
  .bd .row:last-child{border-bottom:none}
  .bd .row em{font-style:normal;color:#475569;font-size:11.5px;margin-left:6px}
  .bd .row .v{color:#cbd5e1;font-family:ui-monospace,Consolas,monospace;white-space:nowrap}
  .bd .row.sum{background:rgba(6,182,212,.06);color:#e2e8f0;font-weight:600}
  .bd .row.sum .v{color:#22d3ee;font-weight:700}
  /* 静态页外壳（不再依赖站点 layout）：顶部条、正文栅格、页脚 */
  body{margin:0;background:#020617;color:#e2e8f0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.6;-webkit-text-size-adjust:100%}
  *{box-sizing:border-box}
  a{color:#22d3ee}
  .top{position:sticky;top:0;z-index:9;background:rgba(2,6,23,.92);backdrop-filter:blur(8px);border-bottom:1px solid #1e293b}
  .top .in{max-width:900px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:12px}
  .top .brand{font-weight:700;font-size:15px;color:#fff}
  .top .brand em{font-style:normal;color:#06b6d4;font-weight:400;font-size:12px}
  .top .sp{flex:1}
  .top .tel{font-family:ui-monospace,Consolas,monospace;font-size:13px;font-weight:700;color:#fff;text-decoration:none}
  .top .back{font-size:13px;color:#94a3b8;text-decoration:none}
  .top .back:hover{color:#22d3ee}
  .page{max-width:900px;margin:0 auto;padding:26px 16px 56px}
  .page .crumb{font-size:12.5px;color:#64748b;margin:0 0 14px}
  .page .crumb a{color:#64748b;text-decoration:none}
  .page .crumb a:hover{color:#22d3ee}
  .page h1{font-size:26px;line-height:1.3;margin:0 0 10px;color:#fff;letter-spacing:-.01em}
  .page .badge{display:inline-block;font-size:11.5px;letter-spacing:.08em;color:#22d3ee;border:1px solid rgba(34,211,238,.35);border-radius:999px;padding:3px 10px;margin:0 0 10px}
  .sibling{margin:0 0 20px;background:linear-gradient(90deg,rgba(6,182,212,.10),rgba(6,182,212,.02));border:1px solid #164e63;border-radius:10px;padding:13px 15px;font-size:13px;color:#a5f3fc}
  .sibling a{color:#22d3ee;font-weight:700;text-decoration:none}
  footer.note{border-top:1px solid #1e293b;margin-top:36px;padding:22px 0 0;text-align:center;color:#64748b;font-size:12.5px;line-height:1.9}
  footer.note a{color:#94a3b8;text-decoration:none}
  #toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,14px);background:#0f766e;color:#ecfeff;font-size:13px;font-weight:600;padding:10px 18px;border-radius:22px;box-shadow:0 8px 24px rgba(0,0,0,.45);opacity:0;pointer-events:none;transition:opacity .18s,transform .18s;z-index:50;max-width:88vw;text-align:center}
  #toast.on{opacity:1;transform:translate(-50%,0)}
  .note-tip{font-size:12px;color:#64748b;margin:12px 0 0;line-height:1.7}
  /* 表单反馈（_tool.js 用 .msg ok/err） */
  .msg{margin:14px 0 0;font-size:13px;padding:12px 14px;border-radius:8px;display:none}
  .msg.ok{display:block;background:rgba(16,185,129,.1);border:1px solid rgba(16,185,129,.3);color:#6ee7b7}
  .msg.err{display:block;background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.3);color:#fca5a5}
  /* FFU 结果清单（2026-10-21）：标签左、数值右对齐，等宽数字便于比对 */
  .specs{margin:8px 0 0;border-top:1px solid #131c2e}
  .specs .srow{display:grid;grid-template-columns:1fr auto;align-items:baseline;gap:12px;padding:8px 0;border-bottom:1px solid #131c2e}
  .specs .srow:last-child{border-bottom:none}
  .specs .sk{font-size:12.5px;color:#94a3b8}
  .specs .sv{font-family:ui-monospace,Consolas,monospace;font-size:17px;font-weight:700;color:#22d3ee;text-align:right;white-space:nowrap}
  .specs .sv small{font-size:11.5px;color:#64748b;font-weight:400;margin-left:3px}
  .specs .srow.sub .sk{color:#64748b;padding-left:10px}
  .specs .srow.sub .sv{font-size:13.5px;color:#cbd5e1;font-weight:600}
  /* 按钮文字不换行（2026-10-21：窄屏/弹性容器里「复制结果」曾被挤成两行） */
  .btn{white-space:nowrap}