/* ============================================================
   乾杉科技官网 — 工具中心 专用样式
   依赖 index.html / 产品中心的 CSS 变量（--navy / --sky / --slate-* / --font-mono）
   ============================================================ */

/* ---------- 页面骨架 ---------- */
.tool-page { max-width: 1920px; margin: 0 auto; padding: 40px 80px 80px; display: flex; gap: 32px; align-items: flex-start; }
.tool-page.one-col { display: block; }
.tool-nav { width: 260px; flex-shrink: 0; background: var(--slate-50); border: 1px solid var(--slate-200); border-radius: 10px; padding: 20px; position: sticky; top: 96px; max-height: calc(100vh - 140px); overflow-y: auto; }
.tool-nav-title { font-size: 16px; font-weight: 700; color: var(--slate-900); margin-bottom: 4px; }
.tool-nav-sub { font-size: 12px; color: var(--slate-500); margin-bottom: 14px; }
.tool-nav-group { margin-bottom: 14px; }
.tool-nav-group h4 { font-size: 11px; font-weight: 700; color: var(--slate-400); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 6px; padding-left: 10px; }
.tool-nav-item { display: flex; align-items: center; gap: 8px; padding: 0 10px; height: 40px; border-radius: 6px; font-size: 13.5px; color: var(--slate-600); cursor: pointer; transition: all .15s; margin-bottom: 2px; }
.tool-nav-item:hover { background: var(--slate-100); color: var(--slate-900); }
.tool-nav-item.active { background: var(--sky); color: #fff; font-weight: 600; }
.tool-nav-item .ico { width: 16px; height: 16px; flex-shrink: 0; opacity: .85; }
.tool-nav-item .tag { margin-left: auto; font-size: 10px; padding: 1px 6px; border-radius: 8px; font-weight: 600; line-height: 1.6; }
.tool-nav-item.active .tag { background: rgba(255, 255, 255, .22); color: #fff; }
.tag.free { background: #DCFCE7; color: #15803D; }
.tag.reg { background: #DBEAFE; color: #1D4ED8; }
.tag.vip { background: #FEF3C7; color: #B45309; }

.tool-main { flex: 1; min-width: 0; }
.tool-head { border-bottom: 1px solid var(--slate-200); padding-bottom: 18px; margin-bottom: 24px; }
.tool-head h1 { font-size: 26px; font-weight: 700; color: var(--slate-900); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.tool-head .badge-perm { font-size: 11px; font-weight: 600; padding: 3px 10px; border-radius: 10px; }
.badge-perm.free { background: #DCFCE7; color: #15803D; }
.badge-perm.reg { background: #DBEAFE; color: #1D4ED8; }
.badge-perm.vip { background: #FEF3C7; color: #B45309; }
.tool-head p { font-size: 14px; color: var(--slate-500); margin-top: 8px; line-height: 1.7; }

/* ---------- 面板 ---------- */
.panel { background: #fff; border: 1px solid var(--slate-200); border-radius: 10px; margin-bottom: 20px; overflow: hidden; }
.panel-hd { background: var(--slate-50); border-bottom: 1px solid var(--slate-200); padding: 12px 20px; font-size: 14px; font-weight: 700; color: var(--slate-800); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.panel-hd .sub { font-size: 12px; font-weight: 400; color: var(--slate-500); }
.panel-bd { padding: 20px; }

/* ---------- 模式切换条（通用理论计算 / 适配乾杉设备计算） ---------- */
.mode-bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: var(--navy); border-radius: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.mode-btn { background: transparent; color: var(--slate-400); border: 1px solid rgba(148, 163, 184, .3); padding: 7px 16px; border-radius: 6px; font-size: 13px; cursor: pointer; transition: all .15s; }
.mode-btn:hover { color: #fff; border-color: rgba(255, 255, 255, .5); }
.mode-btn.active { background: var(--sky); color: #fff; border-color: var(--sky); font-weight: 600; }
.mode-device { margin-left: auto; display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--slate-300); }
.mode-device select { background: var(--slate-800); color: #fff; border: 1px solid rgba(148, 163, 184, .35); border-radius: 5px; padding: 6px 10px; font-size: 13px; font-family: inherit; outline: none; }
.mode-device select:focus { border-color: var(--sky); }

/* ---------- 页签 ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--slate-200); margin-bottom: 20px; flex-wrap: wrap; }
.tab { background: none; border: none; padding: 10px 18px; font-size: 14px; color: var(--slate-500); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all .15s; font-weight: 500; }
.tab:hover { color: var(--slate-800); }
.tab.active { color: var(--sky); border-bottom-color: var(--sky); font-weight: 700; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px 20px; }
.fld { display: flex; flex-direction: column; gap: 6px; }
.fld > label { font-size: 12.5px; font-weight: 600; color: var(--slate-600); display: flex; align-items: center; gap: 6px; }
.fld > label .req { color: var(--red); }
.fld input, .fld select { height: 38px; padding: 0 12px; border: 1px solid var(--slate-300); border-radius: 6px; font-size: 14px; font-family: inherit; outline: none; transition: border-color .15s, box-shadow .15s; background: #fff; color: var(--slate-900); }
.fld input:focus, .fld select:focus { border-color: var(--sky); box-shadow: 0 0 0 3px rgba(14, 165, 233, .12); }
.fld input[readonly] { background: var(--slate-50); color: var(--slate-700); font-family: var(--font-mono); }
.fld input[type=checkbox] { width: 16px; height: 16px; padding: 0; }
.fld .hint { font-size: 11.5px; color: var(--slate-400); line-height: 1.5; }
.fld.wide { grid-column: 1 / -1; }
.inline-check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--slate-600); height: 38px; }
.inline-check input { width: 16px; height: 16px; accent-color: var(--sky); cursor: pointer; }
.input-group { display: flex; gap: 8px; }
.input-group input { flex: 1; min-width: 0; }
.input-group select { flex: 0 0 118px; width: 118px; }
.seg { display: flex; border: 1px solid var(--slate-300); border-radius: 6px; overflow: hidden; height: 38px; }
.seg button { flex: 1; border: none; background: #fff; font-size: 13px; color: var(--slate-600); cursor: pointer; padding: 0 12px; font-family: inherit; transition: all .15s; white-space: nowrap; }
.seg button + button { border-left: 1px solid var(--slate-300); }
.seg button:hover { background: var(--slate-50); }
.seg button.active { background: var(--sky); color: #fff; font-weight: 600; }

/* ---------- 结果 ---------- */
.res-box { margin-top: 20px; border: 1px solid var(--slate-200); border-radius: 8px; overflow: hidden; }
.res-hd { background: var(--slate-50); border-bottom: 1px solid var(--slate-200); padding: 10px 18px; font-size: 13px; font-weight: 700; color: var(--slate-700); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.res-hd .acts { display: flex; gap: 8px; }
.res-body { padding: 6px 18px 14px; }
.res-row { display: flex; align-items: baseline; gap: 14px; padding: 9px 0; border-bottom: 1px dashed var(--slate-200); }
.res-row:last-child { border-bottom: none; }
.res-lab { flex: 0 0 220px; font-size: 13px; color: var(--slate-600); }
.res-val-wrap { flex: 1; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; min-width: 0; }
.res-val { font-family: var(--font-mono); font-size: 15px; font-weight: 700; color: var(--sky-dark); }
.res-unit { font-size: 12px; color: var(--slate-500); font-family: var(--font-mono); }
.res-note { font-size: 11.5px; color: var(--slate-400); line-height: 1.5; flex: 1 1 100%; }
.res-row.is-main .res-val { font-size: 19px; color: var(--navy); }
.res-row.is-warn .res-val { color: var(--amber); }
.res-row.is-bad .res-val { color: var(--red); }
.res-row.is-ok .res-val { color: var(--emerald); }

/* ---------- 按钮 ---------- */
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 20px; border-radius: 6px; font-size: 13.5px; font-weight: 600; cursor: pointer; border: 1px solid transparent; transition: all .15s; font-family: inherit; }
.btn-primary { background: var(--sky); color: #fff; }
.btn-primary:hover { background: var(--sky-dark); }
.btn-ghost { background: #fff; color: var(--slate-700); border-color: var(--slate-300); }
.btn-ghost:hover { border-color: var(--sky); color: var(--sky); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-2); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-sm { padding: 5px 12px; font-size: 12px; }

/* ---------- 公式 / 依据 ---------- */
.formula { background: var(--slate-900); color: #E2E8F0; border-radius: 6px; padding: 12px 16px; font-family: var(--font-mono); font-size: 12.5px; line-height: 1.9; overflow-x: auto; margin-top: 16px; }
.formula .cm { color: #64748B; }
.formula b { color: #38BDF8; font-weight: 600; }
.ref { font-size: 11.5px; color: var(--slate-500); margin-top: 12px; padding-left: 12px; border-left: 3px solid var(--sky); line-height: 1.8; }
.ref b { color: var(--slate-700); }

/* ---------- 状态徽标 ---------- */
.badge { display: inline-block; padding: 2px 10px; border-radius: 10px; font-size: 11.5px; font-weight: 700; line-height: 1.7; }
.badge.a, .badge.ok { background: #DCFCE7; color: #15803D; }
.badge.b { background: #DBEAFE; color: #1D4ED8; }
.badge.c, .badge.warn { background: #FEF3C7; color: #B45309; }
.badge.d, .badge.bad { background: #FEE2E2; color: #B91C1C; }
.badge.info { background: var(--slate-100); color: var(--slate-600); }

/* ---------- 通用表格 ---------- */
.mtable { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 4px; }
.mtable th, .mtable td { border: 1px solid var(--slate-200); padding: 8px 12px; text-align: left; }
.mtable th { background: var(--slate-50); font-weight: 700; color: var(--slate-700); font-size: 12.5px; }
.mtable td.num, .mtable th.num { font-family: var(--font-mono); text-align: right; }
.mtable tbody tr:hover { background: var(--slate-50); }
.mtable tr.hl { background: #EFF6FF; }
.mtable tr.hl td { font-weight: 600; }
.mtable caption { caption-side: top; font-size: 12px; color: var(--slate-500); text-align: left; padding-bottom: 8px; }
.table-scroll { overflow-x: auto; }

/* ---------- 步骤条（选型向导） ---------- */
.steps { display: flex; align-items: center; gap: 0; margin-bottom: 24px; flex-wrap: wrap; }
.step-item { display: flex; align-items: center; gap: 8px; }
.step-dot { width: 28px; height: 28px; border-radius: 50%; background: var(--slate-200); color: var(--slate-500); font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; transition: all .2s; flex-shrink: 0; }
.step-item.active .step-dot { background: var(--sky); color: #fff; }
.step-item.done .step-dot { background: var(--emerald); color: #fff; }
.step-txt { font-size: 13px; color: var(--slate-400); white-space: nowrap; }
.step-item.active .step-txt { color: var(--sky); font-weight: 600; }
.step-item.done .step-txt { color: var(--emerald); }
.step-line { width: 32px; height: 2px; background: var(--slate-200); margin: 0 8px; }
.step-line.done { background: var(--emerald); }

/* ---------- 选片（可点选卡片） ---------- */
.pick-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.pick { border: 1.5px solid var(--slate-200); border-radius: 8px; padding: 14px 16px; cursor: pointer; transition: all .15s; background: #fff; text-align: left; }
.pick:hover { border-color: var(--slate-400); background: var(--slate-50); }
.pick.on { border-color: var(--sky); background: #EFF6FF; box-shadow: 0 0 0 3px rgba(14, 165, 233, .12); }
.pick .pt { font-size: 14px; font-weight: 700; color: var(--slate-900); margin-bottom: 4px; }
.pick .pd { font-size: 11.5px; color: var(--slate-500); line-height: 1.5; }
.pick.on .pt { color: var(--sky-dark); }
.pick-w { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }

/* ---------- 推荐结果卡 ---------- */
.rec-card { border: 1px solid var(--slate-200); border-radius: 10px; padding: 20px; display: flex; gap: 20px; align-items: flex-start; background: #fff; margin-bottom: 14px; }
.rec-card.top { border-color: var(--sky); box-shadow: 0 4px 16px rgba(14, 165, 233, .12); }
.rec-rank { flex: 0 0 auto; width: 40px; height: 40px; border-radius: 8px; background: var(--navy); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 17px; font-weight: 700; font-family: var(--font-mono); }
.rec-card.top .rec-rank { background: var(--sky); }
.rec-body { flex: 1; min-width: 0; }
.rec-body h4 { font-size: 17px; font-weight: 700; color: var(--slate-900); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.rec-body .rec-meta { font-size: 12px; color: var(--slate-500); margin-top: 2px; }
.rec-body .rec-reason { font-size: 13px; color: var(--slate-600); line-height: 1.75; margin-top: 10px; }
.rec-score { flex: 0 0 120px; text-align: center; }
.rec-score .sv { font-family: var(--font-mono); font-size: 30px; font-weight: 700; color: var(--sky); line-height: 1.1; }
.rec-score .sl { font-size: 11.5px; color: var(--slate-500); }
.rec-bar { height: 5px; background: var(--slate-200); border-radius: 3px; margin-top: 6px; overflow: hidden; }
.rec-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--sky), var(--emerald)); border-radius: 3px; }

/* ---------- 图表 ---------- */
.chart-wrap { position: relative; background: #fff; border: 1px solid var(--slate-200); border-radius: 8px; padding: 8px; }
.chart-wrap canvas { display: block; width: 100%; }
.chart-legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: 12px; color: var(--slate-600); padding: 8px 4px 0; }
.chart-legend i { display: inline-block; width: 12px; height: 3px; border-radius: 2px; margin-right: 5px; vertical-align: middle; }
.chart-tip { position: absolute; background: var(--navy); color: #fff; font-size: 11.5px; font-family: var(--font-mono); padding: 5px 9px; border-radius: 4px; pointer-events: none; white-space: pre; z-index: 5; display: none; line-height: 1.6; }

/* ---------- 文件上传 ---------- */
.drop { border: 2px dashed var(--slate-300); border-radius: 10px; padding: 34px 20px; text-align: center; cursor: pointer; transition: all .15s; background: var(--slate-50); }
.drop:hover, .drop.over { border-color: var(--sky); background: #EFF6FF; }
.drop .dt { font-size: 15px; font-weight: 600; color: var(--slate-700); margin-bottom: 6px; }
.drop .ds { font-size: 12.5px; color: var(--slate-500); }
.drop .df { font-size: 11.5px; color: var(--slate-400); margin-top: 10px; font-family: var(--font-mono); }

/* ---------- 权限遮罩 ---------- */
.lock-mask { position: relative; }
.lock-mask::after { content: ''; position: absolute; inset: 0; background: rgba(248, 250, 252, .72); backdrop-filter: blur(1.5px); border-radius: 8px; }
.lock-note { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; z-index: 3; text-align: center; padding: 20px; }

/* ---------- 空态 / 提示条 ---------- */
.tipbar { display: flex; gap: 10px; align-items: flex-start; background: #EFF6FF; border: 1px solid #BFDBFE; border-radius: 8px; padding: 12px 16px; font-size: 13px; color: #1E40AF; line-height: 1.7; margin-bottom: 18px; }
.tipbar.warn { background: #FFFBEB; border-color: #FDE68A; color: #92400E; }
.tipbar.ok { background: #ECFDF5; border-color: #A7F3D0; color: #065F46; }
.tipbar.bad { background: #FEF2F2; border-color: #FECACA; color: #991B1B; }
.tipbar .ti { flex-shrink: 0; width: 18px; height: 18px; margin-top: 1px; }
.empty { text-align: center; padding: 60px 20px; color: var(--slate-400); font-size: 14px; }

/* ---------- 工具中心首页卡片 ---------- */
.tcat { margin-bottom: 40px; }
.tcat-hd { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--slate-200); }
.tcat-hd h2 { font-size: 19px; font-weight: 700; color: var(--slate-900); }
.tcat-hd .cnt { font-family: var(--font-mono); font-size: 13px; color: var(--sky); font-weight: 700; }
.tcat-hd .cdesc { font-size: 12.5px; color: var(--slate-500); margin-left: auto; }
.tgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 18px; }
.tcard { border: 1px solid var(--slate-200); border-radius: 10px; padding: 22px; cursor: pointer; transition: all .18s; background: #fff; display: flex; flex-direction: column; min-height: 178px; }
.tcard:hover { border-color: var(--sky); box-shadow: 0 8px 24px rgba(10, 26, 47, .1); transform: translateY(-2px); }
.tcard-ico { width: 42px; height: 42px; border-radius: 9px; background: linear-gradient(135deg, var(--navy), var(--navy-2)); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.tcard-ico svg { width: 22px; height: 22px; stroke: var(--sky); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tcard h3 { font-size: 16px; font-weight: 700; color: var(--slate-900); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.tcard p { font-size: 13px; color: var(--slate-500); line-height: 1.7; flex: 1; }
.tcard-ft { display: flex; align-items: center; gap: 8px; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--slate-100); font-size: 12px; color: var(--slate-400); }
.tcard-ft .go { margin-left: auto; color: var(--sky); font-weight: 600; }

/* ---------- 响应式 ---------- */
@media (max-width: 1400px) { .tool-page { padding: 32px 40px 60px; } }
@media (max-width: 1000px) {
  .tool-page { flex-direction: column; padding: 24px 20px 50px; }
  .tool-nav { width: 100%; position: static; max-height: none; }
  .res-lab { flex-basis: 160px; }
}

/* ============================================================
   频谱分析 / 音频预处理 / NVH 异响识别 专用样式
   ============================================================ */

/* ---------- 数据源 ---------- */
.sp-src { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 1100px) { .sp-src { grid-template-columns: 1fr; } }
.sp-demo { border: 1px solid var(--slate-200); border-radius: 10px; padding: 16px; background: #fff; }
.sp-demo h5 { font-size: 12.5px; font-weight: 700; color: var(--slate-600); margin-bottom: 10px; }
.sp-demo-btns { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; }
.sp-demo-btns button { border: 1px solid var(--slate-300); background: #fff; border-radius: 6px; padding: 9px 8px; font-size: 12.5px; color: var(--slate-700); cursor: pointer; transition: all .15s; font-family: inherit; text-align: left; }
.sp-demo-btns button:hover { border-color: var(--sky); color: var(--sky); background: #EFF6FF; }
.sp-demo-btns button b { display: block; font-size: 12.5px; font-weight: 600; }
.sp-demo-btns button span { font-size: 11px; color: var(--slate-400); }

/* ---------- 文件信息条 ---------- */
.sp-meta { display: flex; gap: 0; flex-wrap: wrap; border: 1px solid var(--slate-200); border-radius: 8px; overflow: hidden; margin-bottom: 18px; background: #fff; }
.sp-meta-i { flex: 1 1 132px; padding: 11px 16px; border-right: 1px solid var(--slate-200); min-width: 0; }
.sp-meta-i:last-child { border-right: none; }
.sp-meta-i .k { font-size: 11px; color: var(--slate-400); }
.sp-meta-i .v { font-family: var(--font-mono); font-size: 14px; font-weight: 700; color: var(--slate-800); margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 图表工具条 ---------- */
.sp-bar { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; padding: 10px 14px; background: var(--slate-50); border: 1px solid var(--slate-200); border-radius: 8px; margin-bottom: 12px; }
.sp-bar .g { display: flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--slate-600); white-space: nowrap; }
.sp-bar select, .sp-bar input { height: 30px; border: 1px solid var(--slate-300); border-radius: 5px; padding: 0 8px; font-size: 12.5px; font-family: inherit; background: #fff; color: var(--slate-900); outline: none; }
.sp-bar select:focus, .sp-bar input:focus { border-color: var(--sky); box-shadow: 0 0 0 2px rgba(14,165,233,.12); }
.sp-bar input[type=number] { width: 78px; }
.sp-bar input[type=checkbox] { width: 15px; height: 15px; accent-color: var(--sky); cursor: pointer; }
.sp-bar .sp { flex: 1; }

/* ---------- 画布 ---------- */
.sp-cv { position: relative; background: #0B1220; border-radius: 8px; overflow: hidden; }
.sp-cv canvas { display: block; width: 100%; cursor: crosshair; }
.sp-read { display: flex; gap: 18px; flex-wrap: wrap; font-family: var(--font-mono); font-size: 12.5px; color: var(--slate-500); padding: 9px 6px 2px; }
.sp-read b { color: var(--sky-dark); font-weight: 700; }
.sp-read .dim { color: var(--slate-400); }

/* ---------- 峰值表 ---------- */
.sp-peak-tb { width: 100%; border-collapse: collapse; font-size: 12.5px; margin-top: 4px; }
.sp-peak-tb th, .sp-peak-tb td { border: 1px solid var(--slate-200); padding: 6px 10px; text-align: right; font-family: var(--font-mono); }
.sp-peak-tb th { background: var(--slate-50); font-family: inherit; font-weight: 700; color: var(--slate-700); font-size: 12px; }
.sp-peak-tb td:first-child, .sp-peak-tb th:first-child { text-align: center; font-family: inherit; }

/* ---------- 预处理流水线 ---------- */
.pre-list { display: flex; flex-direction: column; gap: 10px; }
.pre-op { display: flex; align-items: center; gap: 14px; border: 1px solid var(--slate-200); border-radius: 8px; padding: 12px 16px; background: #fff; flex-wrap: wrap; }
.pre-op.on { border-color: var(--sky); background: #EFF6FF; }
.pre-op .px { width: 22px; height: 22px; border-radius: 50%; background: var(--slate-200); color: var(--slate-600); font-size: 11.5px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-family: var(--font-mono); }
.pre-op.on .px { background: var(--sky); color: #fff; }
.pre-op .nm { font-size: 13.5px; font-weight: 700; color: var(--slate-800); min-width: 66px; }
.pre-op .cf { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; flex: 1; }
.pre-op .cf label { font-size: 12px; color: var(--slate-500); display: flex; align-items: center; gap: 5px; white-space: nowrap; }
.pre-op .cf input, .pre-op .cf select { height: 30px; border: 1px solid var(--slate-300); border-radius: 5px; padding: 0 7px; font-size: 12.5px; font-family: inherit; outline: none; background: #fff; color: var(--slate-900); }
.pre-op .cf input[type=number] { width: 76px; }
.pre-op .cf input[type=checkbox] { width: 15px; height: 15px; accent-color: var(--sky); cursor: pointer; }
.pre-op .ds { font-size: 11.5px; color: var(--slate-400); flex: 1 1 100%; line-height: 1.6; }
.pre-off { opacity: .62; }
.pre-cmp { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 1100px) { .pre-cmp { grid-template-columns: 1fr; } }

/* ---------- NVH 异响识别 ---------- */
.nvh-top { display: grid; grid-template-columns: 1fr 320px; gap: 18px; align-items: start; }
@media (max-width: 1200px) { .nvh-top { grid-template-columns: 1fr; } }
.nvh-verdict { border-radius: 12px; padding: 22px 24px; border: 1px solid var(--slate-200); background: #fff; }
.nvh-verdict.ok { border-color: #A7F3D0; background: #ECFDF5; }
.nvh-verdict.warn { border-color: #FDE68A; background: #FFFBEB; }
.nvh-verdict.bad { border-color: #FECACA; background: #FEF2F2; }
.nvh-verdict .vl { font-size: 12px; color: var(--slate-500); letter-spacing: .05em; }
.nvh-verdict .vn { font-size: 27px; font-weight: 800; color: var(--slate-900); margin: 4px 0 2px; letter-spacing: -.01em; }
.nvh-verdict .vs { font-size: 13px; color: var(--slate-600); line-height: 1.7; }
.nvh-conf { margin-top: 16px; }
.nvh-conf .cl { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--slate-600); margin-bottom: 5px; }
.nvh-conf .cl b { font-family: var(--font-mono); color: var(--slate-900); }
.nvh-bar { height: 9px; background: var(--slate-200); border-radius: 5px; overflow: hidden; }
.nvh-bar i { display: block; height: 100%; border-radius: 5px; transition: width .4s; }
.nvh-side { border: 1px solid var(--slate-200); border-radius: 12px; padding: 18px; background: #fff; }
.nvh-side h4 { font-size: 14px; font-weight: 700; color: var(--slate-900); margin-bottom: 12px; }
.nvh-prob { margin-bottom: 11px; }
.nvh-prob .pl { display: flex; justify-content: space-between; font-size: 12.5px; margin-bottom: 4px; }
.nvh-prob .pl span { color: var(--slate-600); }
.nvh-prob .pl b { font-family: var(--font-mono); color: var(--slate-800); }
.nvh-feat { display: grid; grid-template-columns: repeat(auto-fill, minmax(172px, 1fr)); gap: 12px; }
.nvh-fc { border: 1px solid var(--slate-200); border-radius: 8px; padding: 11px 14px; background: #fff; }
.nvh-fc .fl { font-size: 11.5px; color: var(--slate-500); display: flex; align-items: center; gap: 4px; }
.nvh-fc .fv { font-family: var(--font-mono); font-size: 18px; font-weight: 700; color: var(--navy); line-height: 1.3; }
.nvh-fc .fh { font-size: 11px; color: var(--slate-400); margin-top: 1px; line-height: 1.5; }
.nvh-fc.hot { border-color: #FDBA74; background: #FFF7ED; }
.nvh-fc.hot .fv { color: #C2410C; }
.nvh-sug { list-style: none; padding: 0; margin: 0; }
.nvh-sug li { padding: 9px 0 9px 26px; position: relative; font-size: 13px; color: var(--slate-700); line-height: 1.75; border-bottom: 1px dashed var(--slate-200); }
.nvh-sug li:last-child { border-bottom: none; }
.nvh-sug li::before { content: ''; position: absolute; left: 8px; top: 17px; width: 6px; height: 6px; border-radius: 50%; background: var(--sky); }
.nvh-sug li b { color: var(--slate-900); }