:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #172033;
  --muted: #677187;
  --line: #e5e9f0;
  --line-strong: #d5dbe6;
  --primary: #3157d5;
  --primary-dark: #2444ad;
  --primary-soft: #edf1ff;
  --success: #0d8a63;
  --success-soft: #e9f8f2;
  --warning: #a76a00;
  --warning-soft: #fff6df;
  --danger: #c23a4a;
  --danger-soft: #fff0f2;
  --shadow: 0 14px 40px rgba(30, 44, 79, 0.08);
  --shadow-soft: 0 6px 20px rgba(30, 44, 79, 0.06);
  --radius: 18px;
  --radius-small: 11px;
  --sidebar: 250px;
  --font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
[hidden] { display: none !important; }

.app-shell { min-height: 100vh; }
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar);
  display: flex;
  flex-direction: column;
  padding: 26px 18px 20px;
  color: #dbe4ff;
  background: linear-gradient(180deg, #17223f 0%, #11192f 100%);
  z-index: 30;
}
.sidebar-brand, .login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.sidebar-brand { padding: 0 10px 28px; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: white;
  background: linear-gradient(135deg, #6180ed, #3157d5);
  box-shadow: 0 10px 24px rgba(49, 87, 213, 0.35);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.04em;
}
.sidebar-brand div, .login-brand div { display: grid; line-height: 1.2; }
.sidebar-brand strong, .login-brand strong { color: #fff; font-size: 17px; letter-spacing: -0.02em; }
.sidebar-brand span, .login-brand span { color: #8795bc; font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; }

.nav-list { display: grid; gap: 7px; }
.nav-item {
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 12px 13px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #9da9c8;
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: .18s ease;
}
.nav-item:hover { color: #fff; background: rgba(255,255,255,.06); }
.nav-item.active { color: #fff; background: rgba(88, 119, 228, .23); box-shadow: inset 3px 0 #6f8cf0; }
.nav-icon { width: 22px; text-align: center; font-size: 17px; }
.sidebar-footer { margin-top: auto; padding: 18px 8px 0; border-top: 1px solid rgba(255,255,255,.08); }
.user-card { display: flex; align-items: center; gap: 10px; }
.avatar { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: rgba(255,255,255,.1); color: white; font-weight: 700; }
.user-card div:last-child { display: grid; line-height: 1.3; }
.user-card strong { color: white; font-size: 13px; }
.user-card span { color: #8290b3; font-size: 11px; text-transform: uppercase; }
.logout-link { display: inline-block; margin-top: 15px; color: #8d9abd; font-size: 12px; text-decoration: none; }
.logout-link:hover { color: #fff; }

.main-content { margin-left: var(--sidebar); padding: 34px 42px 60px; min-height: 100vh; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.topbar h1 { margin: 1px 0 0; font-size: 27px; letter-spacing: -0.035em; }
.eyebrow { margin: 0; color: #7c87a0; font-size: 10px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.mobile-menu { display: none; border: 0; background: transparent; font-size: 22px; }
.topbar-actions { display: flex; gap: 10px; }
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border-radius: 999px;
  color: #5e6980;
  background: #edf0f5;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}
.status-chip.success { color: var(--success); background: var(--success-soft); }
.status-chip.warning { color: var(--warning); background: var(--warning-soft); }
.status-chip.danger { color: var(--danger); background: var(--danger-soft); }

.source-banner {
  margin: -2px 0 24px;
  padding: 14px 17px;
  display: flex;
  gap: 13px;
  align-items: flex-start;
  border: 1px solid #eddca6;
  border-radius: 14px;
  background: #fffbec;
  color: #74541a;
}
.source-banner-icon { flex: 0 0 auto; width: 27px; height: 27px; display: grid; place-items: center; border-radius: 50%; background: #f4cf69; font-weight: 900; }
.source-banner strong { display: block; margin-bottom: 2px; }
.source-banner p { margin: 0; color: #84672f; font-size: 12px; }

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn .18s ease; }
@keyframes fadeIn { from { opacity: .3; transform: translateY(2px); } to { opacity: 1; transform: none; } }

.workspace-grid { display: grid; grid-template-columns: minmax(420px, .82fr) minmax(460px, 1.18fr); gap: 24px; align-items: start; }
.page-grid { display: grid; grid-template-columns: minmax(360px, .8fr) minmax(500px, 1.2fr); gap: 24px; align-items: start; }
.narrow-panel { max-width: 740px; display: grid; gap: 22px; }
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  padding: 24px;
}
.input-card { position: sticky; top: 20px; }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 20px; }
.card-header h2, .card h2 { margin: 3px 0 0; font-size: 18px; letter-spacing: -0.02em; }
.text-button, .icon-button {
  border: 0;
  color: var(--primary);
  background: transparent;
  cursor: pointer;
  font-weight: 700;
  font-size: 12px;
}
.text-button:hover { color: var(--primary-dark); text-decoration: underline; }
.icon-button { font-size: 25px; line-height: 1; color: var(--muted); }
.inline-actions { display: flex; gap: 12px; }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; }
.span-2 { grid-column: span 2; }
.field { display: grid; gap: 6px; min-width: 0; }
.field > span, .stack-form label > span { color: #4b566d; font-size: 12px; font-weight: 700; }
.field small { color: var(--muted); font-size: 11px; min-height: 1em; }
input, select, textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 9px 11px;
  color: var(--text);
  background: white;
  outline: none;
  transition: border .15s ease, box-shadow .15s ease;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: #6c88e7; box-shadow: 0 0 0 3px rgba(49,87,213,.11); }
input::placeholder, textarea::placeholder { color: #a0a8b8; }
select { cursor: pointer; }

.advanced { border: 1px solid var(--line); border-radius: 12px; background: var(--surface-soft); overflow: hidden; }
.advanced summary { padding: 12px 14px; cursor: pointer; color: #4c5870; font-size: 12px; font-weight: 800; list-style: none; }
.advanced summary::-webkit-details-marker { display: none; }
.advanced summary::after { content: "+"; float: right; font-size: 17px; line-height: 1; color: #8590a5; }
.advanced[open] summary::after { content: "−"; }
.inner-grid { padding: 4px 14px 15px; }
.checkbox-field { display: flex; align-items: flex-start; gap: 9px; color: #4c566b; font-size: 12px; font-weight: 600; }
.checkbox-field input { width: 16px; height: 16px; min-height: 0; margin: 1px 0 0; accent-color: var(--primary); }
.restricted-confirm { padding: 10px 12px; border-radius: 10px; color: #7e291f; background: var(--danger-soft); border: 1px solid #f2cbd1; }

.button {
  min-height: 43px;
  border: 0;
  border-radius: 11px;
  padding: 10px 17px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
  transition: .16s ease;
}
.button:disabled { opacity: .55; cursor: not-allowed; }
.button-primary { color: white; background: var(--primary); box-shadow: 0 8px 18px rgba(49,87,213,.18); }
.button-primary:hover:not(:disabled) { background: var(--primary-dark); transform: translateY(-1px); }
.button-secondary { color: #35445f; background: #eef1f6; }
.button-secondary:hover { background: #e4e9f1; }
.button-danger { color: var(--danger); background: var(--danger-soft); }
.button-small { min-height: 32px; padding: 6px 10px; font-size: 11px; }
.button-block { width: 100%; }

.result-stack { display: grid; gap: 18px; }
.empty-result { min-height: 330px; display: grid; place-items: center; align-content: center; text-align: center; padding: 55px; }
.empty-result h2 { margin: 15px 0 5px; }
.empty-result p { max-width: 450px; margin: 0; color: var(--muted); }
.empty-icon { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 18px; color: #7890dd; background: var(--primary-soft); font-size: 27px; transform: rotate(45deg); }
#resultView { display: grid; gap: 18px; }
.result-hero {
  min-height: 184px;
  padding: 28px;
  display: flex;
  justify-content: space-between;
  gap: 30px;
  align-items: flex-end;
  color: white;
  border-radius: 20px;
  background: radial-gradient(circle at 85% 10%, rgba(255,255,255,.16), transparent 28%), linear-gradient(135deg, #263d91 0%, #3157d5 55%, #5a78e4 100%);
  box-shadow: 0 18px 44px rgba(41, 72, 174, .2);
}
.result-hero span { display: block; color: #d6defa; font-size: 12px; font-weight: 700; }
.result-hero strong { display: block; margin: 4px 0 0; font-size: clamp(34px, 4vw, 50px); line-height: 1.05; letter-spacing: -0.055em; }
.result-hero small { color: #bcc9f8; }
.result-hero .eyebrow { color: #aebdf6; margin-bottom: 14px; }
.result-hero-side { min-width: 180px; padding-left: 26px; border-left: 1px solid rgba(255,255,255,.2); }
.result-hero-side strong { font-size: 29px; }
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.metric-card { min-height: 108px; padding: 17px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); box-shadow: var(--shadow-soft); }
.metric-card span { display: block; color: var(--muted); font-size: 11px; font-weight: 700; }
.metric-card strong { display: block; margin: 7px 0 1px; font-size: 20px; letter-spacing: -0.03em; }
.metric-card small { color: #8992a4; font-size: 10px; }

.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 12px; }
.data-table th { padding: 10px 11px; color: #68738a; background: #f5f7fa; border-bottom: 1px solid var(--line); text-align: left; font-size: 10px; text-transform: uppercase; letter-spacing: .05em; white-space: nowrap; }
.data-table th:first-child { border-radius: 9px 0 0 0; }
.data-table th:last-child { border-radius: 0 9px 0 0; }
.data-table td { padding: 11px; border-bottom: 1px solid var(--line); vertical-align: middle; white-space: nowrap; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover { background: #fafbfe; }
.number-positive { color: var(--success); font-weight: 800; }
.number-negative { color: var(--danger); font-weight: 800; }
.badge { display: inline-flex; padding: 4px 7px; border-radius: 999px; background: #eef1f6; color: #5f6a80; font-size: 10px; font-weight: 800; }
.badge.success { color: var(--success); background: var(--success-soft); }
.badge.danger { color: var(--danger); background: var(--danger-soft); }

.formula-card { padding-bottom: 16px; }
.formula-steps { display: grid; gap: 10px; }
.formula-step { display: grid; grid-template-columns: 28px 1fr auto; gap: 11px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--line); }
.formula-step:last-child { border-bottom: 0; }
.step-index { width: 27px; height: 27px; display: grid; place-items: center; border-radius: 8px; color: var(--primary); background: var(--primary-soft); font-weight: 900; font-size: 11px; }
.formula-step span { color: #526078; font-size: 11px; }
.formula-step strong { font-size: 12px; }
.warning-list { display: grid; gap: 9px; }
.warning-item { padding: 12px 14px; border: 1px solid #eddca6; border-radius: 12px; background: #fffbec; color: #735820; font-size: 11px; }

.info-callout, .danger-callout { margin-bottom: 18px; padding: 13px 15px; border-radius: 12px; }
.info-callout { color: #40577d; background: #eff4ff; border: 1px solid #d9e3ff; }
.danger-callout { color: #7b343b; background: #fff4f5; border: 1px solid #f2d7da; }
.info-callout strong, .danger-callout strong { display: block; margin-bottom: 2px; }
.info-callout p, .danger-callout p { margin: 0; font-size: 12px; }
.upload-form { display: grid; gap: 14px; }
.upload-zone { min-height: 210px; display: grid; place-items: center; align-content: center; gap: 5px; border: 1.5px dashed #b8c2d4; border-radius: 15px; background: #fafbfc; cursor: pointer; text-align: center; }
.upload-zone:hover { border-color: #7390e8; background: #f5f7ff; }
.upload-zone input { position: absolute; opacity: 0; pointer-events: none; }
.upload-zone small { color: var(--muted); }
.upload-icon { font-size: 30px; color: var(--primary); }
.selected-file { padding: 10px 12px; border-radius: 10px; background: var(--success-soft); color: var(--success); font-weight: 700; }
.filter-row { display: flex; gap: 12px; align-items: end; margin-bottom: 18px; flex-wrap: wrap; }
.field.compact { min-width: 170px; }

.settings-global { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 15px; margin-bottom: 20px; }
.onboarding-methods { display: grid; gap: 12px; margin: 18px 0 12px; }
.onboarding-method { border: 1px solid var(--line); border-radius: 14px; background: var(--surface-soft, #faf9f7); overflow: hidden; }
.onboarding-method > summary { display: flex; align-items: center; gap: 12px; padding: 16px 18px; cursor: pointer; list-style: none; }
.onboarding-method > summary::-webkit-details-marker { display: none; }
.onboarding-method > summary span:not(.method-letter) { display: grid; gap: 2px; }
.onboarding-method > summary strong { font-size: 15px; }
.onboarding-method > summary small { color: var(--muted); font-size: 12px; font-weight: 500; }
.method-letter { width: 30px; height: 30px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 9px; color: #5d4148; background: var(--accent-soft, #f4e6ea); font-weight: 850; }
.onboarding-method > form, .onboarding-method > .tentative-callout { margin-left: 18px; margin-right: 18px; }
.tentative-callout { margin-bottom: 16px; padding: 13px 15px; border-left: 3px solid var(--accent, #d8a6b1); border-radius: 4px 10px 10px 4px; background: #f8f3f1; color: #574d49; }
.tentative-callout p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.advanced-settings { border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.advanced-settings > summary { padding: 13px 15px; cursor: pointer; color: var(--text-secondary, #716b66); font-weight: 750; }
.advanced-settings .section-fields { padding: 4px 15px 16px; }
.equation-preview { display: grid; gap: 3px; padding: 13px 15px; border: 1px solid #e7e1dc; border-radius: 10px; background: #fff; color: var(--muted); font-size: 12px; }
.equation-preview strong { color: var(--success); }
.sample-order-button { margin: 0 18px 16px; }
.onboarding-next { padding: 16px; border: 1px solid #d9e6df; border-radius: 12px; background: #f2f7f4; }
.onboarding-next ol { margin: 8px 0 14px; padding-left: 22px; color: var(--text-secondary); }
.table-actions { min-width: 130px; }
.table-actions .text-button { margin: 2px 8px 2px 0; }
.site-version em { display: block; margin-top: 5px; color: var(--warning); font-size: 11px; font-style: normal; font-weight: 750; }
.source-confirm { grid-column: span 1; align-self: end; min-height: 42px; align-items: center; padding: 8px 0; }
.settings-sites { display: grid; gap: 14px; margin-bottom: 20px; }
.settings-site { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.settings-site summary { padding: 14px 16px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; background: #fafbfc; font-weight: 800; }
.settings-site summary::-webkit-details-marker { display: none; }
.settings-site summary small { color: var(--muted); font-weight: 600; }
.settings-site-body { padding: 16px; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 13px; }
.settings-site-body .span-2 { grid-column: span 2; }
.settings-site-body .span-4 { grid-column: span 4; }

.stack-form { display: grid; gap: 14px; }
.stack-form label { display: grid; gap: 6px; }
.reference-card dl { display: grid; grid-template-columns: 150px 1fr; gap: 10px 18px; margin: 18px 0 0; }
.reference-card dt { color: var(--muted); }
.reference-card dd { margin: 0; font-weight: 700; overflow-wrap: anywhere; }

.detail-dialog { width: min(860px, 92vw); max-height: 86vh; padding: 0; border: 0; border-radius: 18px; box-shadow: 0 30px 90px rgba(20,31,60,.28); }
.detail-dialog::backdrop { background: rgba(18,27,49,.5); backdrop-filter: blur(3px); }
.dialog-header { position: sticky; top: 0; display: flex; justify-content: space-between; align-items: flex-start; padding: 20px 22px; border-bottom: 1px solid var(--line); background: white; }
.detail-dialog pre { margin: 0; padding: 22px; max-height: 68vh; overflow: auto; color: #2c3a51; background: #f7f9fc; font-size: 11px; line-height: 1.65; white-space: pre-wrap; overflow-wrap: anywhere; }
.toast { position: fixed; right: 24px; bottom: 24px; max-width: 380px; padding: 12px 16px; border-radius: 12px; color: #fff; background: #17233f; box-shadow: var(--shadow); opacity: 0; transform: translateY(12px); pointer-events: none; transition: .2s ease; z-index: 100; }
.toast.show { opacity: 1; transform: none; }
.toast.error { background: #a92d3c; }

/* Login */
.login-body { display: grid; place-items: center; padding: 30px; background: #eef1f7; }
.login-shell { width: min(1120px, 100%); }
.login-panel { min-height: 680px; display: grid; grid-template-columns: 1.1fr .9fr; grid-template-rows: auto 1fr; color: white; border-radius: 26px; overflow: hidden; background: radial-gradient(circle at 25% 15%, rgba(83,117,230,.4), transparent 30%), linear-gradient(145deg, #182648, #10182d); box-shadow: 0 30px 90px rgba(28,42,77,.22); }
.login-brand { grid-column: 1; padding: 34px 42px 0; align-self: start; }
.login-copy { grid-column: 1; padding: 80px 66px 50px 42px; align-self: center; }
.login-copy .eyebrow { color: #91a5e8; }
.login-copy h1 { margin: 12px 0 20px; font-size: clamp(42px, 5vw, 66px); line-height: 1.06; letter-spacing: -.055em; }
.login-copy p:last-child { max-width: 520px; margin: 0; color: #aeb9d7; font-size: 15px; }
.login-form-wrap { grid-column: 2; grid-row: 1 / span 2; margin: 28px; padding: 46px; align-self: stretch; display: flex; flex-direction: column; justify-content: center; color: var(--text); border-radius: 21px; background: white; }
.login-form-wrap h2 { margin: 0; font-size: 25px; }
.login-form-wrap > div:first-child > p { margin: 5px 0 28px; color: var(--muted); }
.microcopy { margin: 20px 0 0; color: #8a93a4; font-size: 10px; text-align: center; }
.alert { margin-bottom: 14px; padding: 10px 12px; border-radius: 10px; font-size: 12px; }
.alert-danger { color: var(--danger); background: var(--danger-soft); border: 1px solid #f2cbd1; }

@media (max-width: 1220px) {
  .workspace-grid { grid-template-columns: minmax(380px, .9fr) minmax(420px, 1.1fr); }
  .main-content { padding-left: 30px; padding-right: 30px; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .settings-site-body { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .settings-site-body .span-4 { grid-column: span 2; }
}

@media (max-width: 980px) {
  :root { --sidebar: 232px; }
  .workspace-grid, .page-grid { grid-template-columns: 1fr; }
  .input-card { position: static; }
  .result-stack { min-width: 0; }
  .login-panel { grid-template-columns: 1fr; }
  .login-form-wrap { grid-column: 1; grid-row: auto; margin: 24px; }
  .login-brand { padding-bottom: 0; }
  .login-copy { padding: 55px 42px 20px; }
}

@media (max-width: 760px) {
  .sidebar { transform: translateX(-101%); transition: transform .2s ease; box-shadow: 20px 0 50px rgba(10,18,35,.25); }
  .sidebar.open { transform: none; }
  .main-content { margin-left: 0; padding: 22px 16px 45px; }
  .mobile-menu { display: inline-block; }
  .topbar { justify-content: flex-start; }
  .topbar-actions { margin-left: auto; }
  .topbar h1 { font-size: 22px; }
  .form-grid, .settings-global { grid-template-columns: 1fr; }
  .span-2, .source-confirm { grid-column: span 1; }
  .result-hero { align-items: stretch; flex-direction: column; }
  .result-hero-side { padding: 20px 0 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.2); }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .card { padding: 19px; }
  .settings-site-body { grid-template-columns: 1fr; }
  .settings-site-body .span-2, .settings-site-body .span-4 { grid-column: span 1; }
  .login-body { padding: 0; background: #11192f; }
  .login-panel { min-height: 100vh; border-radius: 0; }
  .login-brand { padding: 28px 24px 0; }
  .login-copy { padding: 48px 24px 18px; }
  .login-copy h1 { font-size: 42px; }
  .login-form-wrap { margin: 18px; padding: 30px 23px; }
  .formula-step { grid-template-columns: 28px 1fr; }
  .formula-step strong { grid-column: 2; }
}

@media (max-width: 480px) {
  .metric-grid { grid-template-columns: 1fr; }
  .topbar-actions { display: none; }
  .filter-row { display: grid; grid-template-columns: 1fr; }
  .field.compact { min-width: 0; }
  .card-header { flex-direction: column; }
}

/* "返回总控中心": first in every top bar, the title stays next to it; icon only on narrow screens. */
.hub-back { display: inline-flex; align-items: center; gap: 6px; flex: 0 0 auto; white-space: nowrap; text-decoration: none; }
.hub-back .hub-back-icon { width: 18px; height: 18px; flex: 0 0 auto; }
.topbar > .hub-back ~ div:first-of-type { margin-right: auto; }
@media (max-width: 699px) {
  .hub-back { padding-left: 10px; padding-right: 10px; }
  .hub-back .hub-back-text { display: none; }
}