:root {
  --ink: #13251d;
  --muted: #6e7a74;
  --paper: #f4f5f1;
  --panel: #fff;
  --line: #dfe4df;
  --green: #0f6b48;
  --lime: #c9ff5a;
  --soft: #eaf2ed;
  --orange: #ff8a4c;
  --blue: #5a87ff;
  --shadow: 0 18px 50px rgba(24, 50, 38, 0.09);
}
/* Stable heading geometry: opening the securing details must not reflow this row. */
.control-heading {
  align-items: flex-start !important;
  position: relative;
}
.control-heading > .step-heading {
  flex: 1 1 auto;
  min-width: 0;
}
.control-heading > .step-heading > span {
  flex: 0 0 34px;
  min-width: 34px;
  aspect-ratio: 1;
}
.control-heading > .step-heading > div {
  min-width: 0;
}
.control-heading > .step-heading h2 {
  white-space: nowrap;
}
.securing-visibility {
  display: flex;
  gap: 6px;
}
.securing-visibility button {
  display: flex;
  align-items: center;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 8px;
  background: #f5f6f4;
  font-size: 9px;
  white-space: nowrap;
  transition: 0.18s ease;
}
.securing-visibility button i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #aeb7b2;
  box-shadow: 0 0 0 3px rgba(174, 183, 178, 0.14);
}
.securing-visibility button b {
  min-width: 22px;
  padding: 2px 4px;
  border-radius: 999px;
  background: #dfe4df;
  color: #718078;
  font-size: 7px;
  letter-spacing: 0.3px;
}
.securing-visibility button.active {
  background: white;
  font-weight: 700;
  box-shadow: 0 3px 10px rgba(19, 37, 29, 0.08);
}
.securing-visibility .dunnage-toggle.active {
  border-color: #c9965f;
  color: #865522;
}
.securing-visibility .dunnage-toggle.active i {
  background: #a56a32;
  box-shadow: 0 0 0 3px rgba(165, 106, 50, 0.14);
}
.securing-visibility .airbag-toggle.active {
  border-color: #8fc7e7;
  color: #226b91;
}
.securing-visibility .airbag-toggle.active i {
  background: #57aedd;
  box-shadow: 0 0 0 3px rgba(87, 174, 221, 0.15);
}
.securing-visibility button.active b {
  background: var(--ink);
  color: white;
}
#manualPane .form-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
#manualPane .form-grid .third {
  min-width: 0;
}
#manualPane .form-grid .third input,
#manualPane .form-grid .third select {
  min-width: 0;
  padding-left: 8px;
  padding-right: 8px;
}
@media (max-width: 760px) {
  #manualPane .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.playback {
  display: none;
  position: absolute;
  left: 50%;
  bottom: 42px;
  transform: translateX(-50%);
  align-items: center;
  gap: 7px;
  width: min(480px, calc(100% - 28px));
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(19, 37, 29, 0.12);
  border-radius: 9px;
  box-shadow: 0 8px 24px rgba(19, 37, 29, 0.1);
  z-index: 3;
}
.playback button {
  width: 29px;
  height: 29px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: white;
  color: var(--ink);
  font-weight: 700;
}
.playback button:disabled {
  opacity: 0.35;
}
.playback span {
  font-size: 11px;
  white-space: nowrap;
}
.playback > input {
  flex: 1;
  accent-color: var(--green);
}
.recommendation {
  margin-top: 15px;
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
}
.recommendation[hidden] {
  display: none;
}
.recommendation strong {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
}
.recommendation p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}
.recommendation button {
  border: 0;
  border-radius: 6px;
  background: var(--ink);
  color: white;
  padding: 9px 12px;
  font-size: 10px;
  font-weight: 600;
}
.coordinate-note {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 10px;
}
.plan-head > div {
  min-width: 0;
}
.container-tabs {
  display: none;
  gap: 7px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.container-tabs button {
  border: 1px solid var(--line);
  background: white;
  color: var(--muted);
  padding: 8px 12px;
  font-size: 10px;
}
.container-tabs button.active {
  background: var(--ink);
  border-color: var(--ink);
  color: white;
}
.container-tabs button span {
  margin-left: 5px;
  color: inherit;
  opacity: 0.7;
}
#threeMount {
  position: absolute;
  inset: 0;
  display: none;
}
#threeMount canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.container-tabs .nav-arrow {
  width: 34px;
  padding: 8px 0;
  font-size: 16px;
}
.container-tabs .nav-arrow:disabled {
  opacity: 0.3;
}
.container-tabs .page-label {
  display: flex;
  align-items: center;
  padding: 0 5px;
  color: var(--muted);
  font-size: 10px;
}
.workspace {
  margin-top: 28px;
}
.control-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.top-simulate {
  border: 0;
  border-radius: 7px;
  background: var(--ink);
  color: white;
  padding: 10px 12px;
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
}
.top-simulate b {
  margin-left: 7px;
}
.simulation-config-bar {
  display: grid;
  align-items: end;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fafbf9;
}
.simulation-config-bar .top-simulate {
  height: 38px;
}
.simulation-config-bar select {
  height: 38px;
}
.product-options {
  display: flex;
  gap: 12px;
  margin-top: 7px;
  flex-wrap: wrap;
}
.product-options label {
  display: flex;
  align-items: center;
  color: var(--muted);
  cursor: pointer;
}
.product-options input {
  margin: 0;
  accent-color: var(--green);
}
.product-item > button {
  margin-top: 5px;
}
.product-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.product-title-row > strong {
  min-width: 0;
}
.qty-stepper {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--muted);
  font-size: 9px;
  white-space: nowrap;
}
.qty-stepper input {
  box-sizing: border-box;
  width: 48px;
  height: 27px;
  padding: 3px 5px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #fff;
  color: var(--ink);
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
}
.qty-stepper input:focus {
  outline: 2px solid rgba(9, 105, 76, 0.18);
  border-color: var(--green);
}
.qty-stepper input::-webkit-inner-spin-button,
.qty-stepper input::-webkit-outer-spin-button {
  appearance: none;
  margin: 0;
}
.qty-arrows {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.qty-arrows button {
  display: grid;
  place-items: center;
  width: 17px;
  height: 12px;
  margin: 0 !important;
  padding: 0;
  border: 1px solid var(--line) !important;
  border-radius: 2px;
  background: #f6f8f5 !important;
  color: var(--green) !important;
  font-size: 7px !important;
  line-height: 1;
}
.qty-arrows button:hover {
  background: var(--soft) !important;
}
.qty-arrows button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.product-item > .delete-product {
  margin-top: 3px;
}
.plan-actions {
  display: flex;
  align-items: center;
  gap: 7px;
}
.sequence-list {
  max-height: var(--sequence-max-height, 360px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 5px;
  scrollbar-width: thin;
  scrollbar-color: #9daf9f transparent;
}
.sequence-list::-webkit-scrollbar {
  width: 7px;
}
.sequence-list::-webkit-scrollbar-thumb {
  background: #9daf9f;
  border-radius: 8px;
}
.sequence-list::-webkit-scrollbar-track {
  background: transparent;
}
.loading-plan.expanded .sequence-list {
  max-height: none;
  overflow: visible;
  padding-right: 0;
}
.loading-plan.expanded #toggleSequence {
  background: var(--ink);
  color: white;
}
.securing-recommendation {
  margin-top: 12px;
  padding: 14px 16px;
}
.securing-recommendation[hidden] {
  display: none;
}
.securing-recommendation h3 {
  margin: 0 0 6px;
}
.securing-recommendation p {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
}
.securing-items {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-top: 10px;
}
.securing-items div {
  padding: 8px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
}
.securing-items strong {
  display: block;
  color: var(--ink);
  margin-bottom: 2px;
}
@media (max-width: 760px) {
  .control-heading {
    align-items: flex-start;
  }
  .securing-items {
    grid-template-columns: 1fr;
  }
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
}
button,
input,
select {
  font: inherit;
}
button {
  cursor: pointer;
}
.topbar {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-weight: 700;
}
.brand-mark {
  display: flex;
  align-items: flex-end;
}
.topbar nav {
  display: flex;
}
.topbar nav a {
  text-decoration: none;
}
.workspace {
  display: grid;
  grid-template-columns: 430px 1fr;
}
.control-panel {
  border-right: 1px solid var(--line);
}
.step-heading {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}
.step-heading > span {
  display: grid;
  place-items: center;
  font-weight: 700;
  border-radius: 50%;
}
.step-heading h2,
.result-header h2,
.plan-head h2 {
  margin: 0 0 5px;
}
.step-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}
.step-heading.compact {
  margin-bottom: 18px;
}
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--line);
  margin-top: 25px;
}
.tab {
  border: 0;
  background: none;
  color: var(--muted);
  padding: 12px;
  border-bottom: 2px solid transparent;
}
.tab.active {
  font-weight: 600;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.form-grid label,
.container-select {
  font-weight: 600;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.form-grid .wide {
  grid-column: 1/-1;
}
.form-grid input,
select {
  width: 100%;
  border: 1px solid var(--line);
  background: #fafbf9;
  border-radius: 7px;
  padding: 10px 11px;
  color: var(--ink);
  outline: none;
}
.option-row {
  display: flex;
  gap: 20px;
  margin: 16px 0;
  color: var(--muted);
  font-size: 12px;
}
.option-row label {
  display: flex;
  align-items: center;
  gap: 6px;
}
.add-button {
  border: 0;
  border-radius: 7px;
  width: 100%;
  font-weight: 600;
}
.add-button {
  padding: 11px;
}
.dropzone {
  height: 174px;
  border: 1.5px dashed #aebdb4;
  border-radius: 9px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  text-align: center;
}
.dropzone input {
  display: none;
}
.upload-icon {
  font-size: 24px;
  color: var(--green);
}
.dropzone small {
  font-size: 10px;
  color: var(--muted);
}
.text-button {
  border: 0;
  background: none;
  color: var(--green);
  font-size: 11px;
  text-decoration: underline;
  margin: 12px auto;
  display: block;
}
.product-list {
  max-height: 224px;
  overflow: auto;
  margin-top: 10px;
}
.product-item {
  display: grid;
  gap: 10px;
  align-items: center;
  padding: 11px 3px;
  border-top: 1px solid var(--line);
}
.product-item:first-child {
  border-top: 0;
}
.product-color {
  width: 30px;
  height: 30px;
  border-radius: 5px;
}
.product-item strong {
  font-size: 12px;
  display: block;
}
.product-item small {
  font-size: 10px;
  color: var(--muted);
}
.product-item button {
  border: 0;
  background: none;
  color: #9aa39e;
  font-size: 17px;
}
.list-empty {
  padding: 22px 0;
  text-align: center;
  font-size: 11px;
}
.divider {
  height: 1px;
  background: var(--line);
  margin: 26px 0;
}
.result-header,
.plan-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.view-actions {
  display: flex;
  border: 1px solid var(--line);
  overflow: hidden;
}
.view-actions button {
  border: 0;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
}
.view-actions button:last-child {
  border: 0;
}
.view-actions button.active {
  color: white;
}
.canvas-wrap {
  height: 510px;
  position: relative;
  margin-top: 22px;
  overflow: hidden;
}
.canvas-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 8px;
}
.empty-state strong {
  font-size: 16px;
}
.empty-state span {
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
}
.empty-cube {
  position: relative;
  width: 70px;
  height: 60px;
  margin-bottom: 15px;
}
.empty-cube i {
  position: absolute;
  background: rgba(15, 107, 72, 0.1);
  border: 1px solid rgba(15, 107, 72, 0.35);
}
.empty-cube i:nth-child(1) {
  width: 50px;
  height: 42px;
  left: 10px;
  top: 14px;
  transform: skewY(24deg);
}
.empty-cube i:nth-child(2) {
  width: 30px;
  height: 42px;
  left: 60px;
  top: 2px;
  transform: skewY(-24deg);
}
.empty-cube i:nth-child(3) {
  width: 50px;
  height: 30px;
  left: 25px;
  top: -1px;
  transform: skewY(-24deg) rotate(48deg);
}
.stats {
  display: grid;
  border: 1px solid var(--line);
  margin-top: 16px;
}
.stats > div {
  padding: 17px;
  border-right: 1px solid var(--line);
}
.stats > div:last-child {
  border: 0;
}
.stats span {
  display: block;
  color: var(--muted);
  font-size: 10px;
  margin-bottom: 6px;
}
.stats strong {
  display: block;
  font-size: 22px;
}
.stats small {
  color: var(--muted);
}
.meter {
  background: var(--line);
  margin-top: 9px;
}
.meter i {
  display: block;
  height: 100%;
  width: 0;
  transition: width 0.5s;
}
.plan-head button {
  border: 1px solid var(--line);
  background: white;
  border-radius: 7px;
  padding: 8px 12px;
  font-size: 11px;
}
.plan-head button:disabled {
  opacity: 0.45;
}
.sequence-empty {
  padding: 28px;
  text-align: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  margin-top: 14px;
}
.sequence-list {
  padding: 0;
  margin: 14px 0 0;
  list-style: none;
  display: grid;
  gap: 7px;
}
.sequence-list li {
  display: grid;
  grid-template-columns: 30px 12px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  font-size: 11px;
}
.sequence-list .num {
  font-weight: 700;
}
.sequence-list .dot {
  width: 9px;
  height: 9px;
  border-radius: 2px;
}
.sequence-list strong {
  font-size: 11px;
}
.sequence-list small {
  color: var(--muted);
}
.guide {
  padding: 0 30px;
}
.guide article {
  border-top: 2px solid var(--ink);
  padding-top: 20px;
}
.guide h3 {
  font-size: 18px;
}
.guide p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}
footer {
  padding: 45px max(30px, calc((100% - 1200px) / 2));
  display: flex;
  align-items: center;
  gap: 30px;
}
footer span {
  font-size: 20px;
  font-weight: 700;
}
footer p {
  flex: 1;
  color: #aab8b0;
  font-size: 12px;
}
footer small {
  color: #809087;
  font-size: 10px;
}
@media (max-width: 1000px) {
  .workspace {
    grid-template-columns: 370px 1fr;
  }
  .control-panel,
  .result-panel {
    padding: 25px;
  }
  .canvas-wrap {
    height: 430px;
  }
  .stats {
    grid-template-columns: 1fr 1fr;
  }
  .stats > div:nth-child(2) {
    border-right: 0;
  }
  .stats > div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
}
@media (max-width: 760px) {
  .topbar nav {
    display: none;
  }
  .workspace {
    display: block;
  }
  .control-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .result-panel {
    padding: 20px;
  }
  footer {
    flex-wrap: wrap;
  }
}
/* Calculation status and public visitor counters */
.simulation-status > b {
  min-width: 27px;
  color: var(--green);
  font-size: 9px;
  text-align: right;
}
.simulation-status em {
  display: block;
  width: 58px;
  height: 4px;
  overflow: hidden;
  border-radius: 999px;
  background: #dce5df;
}
.simulation-status em u {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
  transition: width 0.16s ease;
}
.simulation-status {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  padding: 6px 9px;
  background: white;
  color: var(--muted);
  font-size: 9px;
  white-space: nowrap;
}
.simulation-status i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #8aa297;
}
.simulation-status.busy i {
  border: 2px solid #bad2c7;
  border-top-color: var(--green);
  background: transparent;
  animation: status-spin 0.8s linear infinite;
}
.simulation-status.done i {
  background: var(--green);
}
.simulation-status.error {
  border-color: #d9a8a0;
  color: #9b3e30;
}
.simulation-status.error i {
  background: #b94d3c;
}
@keyframes status-spin {
  to {
    transform: rotate(360deg);
  }
}
@media (max-width: 760px) {
  .simulation-status {
    position: absolute;
    left: 20px;
    top: 78px;
    z-index: 3;
  }
}
.brand > small {
  font-size: 9px;
  font-weight: 600;
}

/* ---- 반응형 레이아웃 보정(예전 layout-fixes.css, 1.1.78에 합침) ---- */
#planner {
  scroll-margin-top: 104px;
}
#planner > .control-panel {
  align-self: start;
  border-right: 0;
}
#planner::after {
  content: '';
  position: absolute;
  top: 64px;
  bottom: 16px;
  left: 430px;
  width: 1px;
  background: var(--line);
  pointer-events: none;
}
@media (max-width: 1000px) {
  #planner::after {
    left: 370px;
  }
}
@media (max-width: 760px) {
  #planner {
    scroll-margin-top: 80px;
  }
  #planner::after {
    display: none;
  }
}

/* ---- 어두운 헤더·기본 톤(예전 v2.css, 1.1.78에 합침) ---- */
:root {
  --paper: #f5f5f7;
  --panel: #fff;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(0, 0, 0, 0.08);
  --soft: #f5f5f7;
  --green: #0066cc;
  --lime: #fff;
  --orange: #0066cc;
  --shadow: none;
}
html {
  background: #fff;
}
body {
  background: var(--paper);
  font-size: 17px;
}
button,
a,
input,
select {
  -webkit-tap-highlight-color: transparent;
}
button:active,
.topbar a:active {
  transform: scale(0.95);
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid #0071e3;
  outline-offset: 2px;
}
.topbar {
  height: 44px;
  padding: 0 max(20px, calc((100% - 980px) / 2));
  gap: 38px;
  color: #f5f5f7;
  background: rgba(0, 0, 0, 0.92);
  border: 0;
  backdrop-filter: saturate(180%) blur(20px);
}
.brand {
  color: #f5f5f7;
  font-size: 15px;
  letter-spacing: -0.02em;
}
.brand sup {
  margin-left: 3px;
  color: #8ed1ff;
  font-size: 9px;
  font-weight: 600;
}
.brand-mark {
  width: 20px;
  height: 19px;
  gap: 2px;
}
.brand-mark span {
  width: 5px;
  background: #f5f5f7;
  border-radius: 1px 1px 0 0;
}
.brand-mark span:nth-child(1) {
  height: 11px;
}
.brand-mark span:nth-child(2) {
  height: 18px;
}
.brand-mark span:nth-child(3) {
  height: 14px;
}
.topbar nav {
  justify-content: center;
  gap: 32px;
}
.topbar nav a {
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}
.topbar nav a.active {
  color: #fff;
  font-weight: 400;
}
.workspace {
  max-width: 1440px;
  margin: 24px auto 80px;
  min-height: 1040px;
  background: #fff;
  box-shadow: none;
}
.control-panel {
  padding: 32px;
  border-color: var(--line);
}
.result-panel {
  padding: 32px;
}
.step-heading > span {
  width: 32px;
  height: 32px;
  color: #fff;
  background: #1d1d1f;
}
.step-heading h2,
.result-header h2,
.plan-head h2 {
  color: #1d1d1f;
  font-weight: 600;
  letter-spacing: -0.025em;
}
.step-heading p,
.guide p {
  line-height: 1.47;
}
.tabs {
  border-color: var(--line);
}
.tab {
  min-height: 44px;
  font-size: 14px;
}
.tab.active {
  color: #0066cc;
  border-color: #0066cc;
}
.form-grid label,
.container-select {
  color: #6e6e73;
}
.form-grid input,
select,
.dropzone {
  border-color: var(--line);
  border-radius: 11px;
  background: #fff;
}
.form-grid input,
select {
  min-height: 44px;
  font-size: 14px;
}
.form-grid input:focus,
select:focus {
  border-color: #0071e3;
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.12);
}
.dropzone {
  background: #fafafc;
}
.dropzone.drag {
  border-color: #0071e3;
  background: #eef7ff;
}
.text-button,
.upload-icon {
  color: #0066cc;
}
.top-simulate,
.add-button,
.recommendation button,
.plan-head button {
  min-height: 44px;
  border-radius: 999px;
}
.top-simulate,
.recommendation button {
  color: #fff;
  background: #0071e3;
  font-weight: 400;
}
.top-simulate b {
  color: #fff;
}
.add-button {
  color: #0066cc;
  background: #eef7ff;
}
.top-simulate.needs-update {
  background: #1d1d1f;
}
.canvas-wrap {
  background: #f5f5f7;
}
.view-actions {
  border-color: var(--line);
  border-radius: 999px;
}
.view-actions button {
  min-height: 40px;
  padding: 8px 16px;
  background: #fff;
}
.view-actions button.active {
  background: #1d1d1f;
}
.stats {
  border-color: var(--line);
}
.stats > div {
  border-color: var(--line);
}
.meter {
  height: 4px;
  border-radius: 999px;
  overflow: hidden;
}
.meter i {
  background: #0071e3;
}
.sequence-list li {
  border-radius: 11px;
  background: #f5f5f7;
}
.sequence-list .num {
  color: #0066cc;
}
.recommendation {
  border-left: 0;
  border-radius: 18px;
  background: #f5f5f7;
}
.securing-recommendation {
  border-left: 0;
  border-radius: 18px;
  background: #eef7ff;
}
.simulation-status {
  border-radius: 999px;
}
.simulation-status.done {
  color: #0066cc;
  border-color: rgba(0, 102, 204, 0.28);
}
.simulation-status.done i,
.simulation-status em u {
  background: #0071e3;
}
.simulation-status.warning {
  color: #9a5b00;
  border-color: rgba(154, 91, 0, 0.3);
  background: #fff8e8;
}
.simulation-status.warning i {
  background: #c47a00;
}
.safety-notice {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  padding: 12px 16px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 11px;
  color: #6e6e73;
  background: #fafafc;
  font-size: 11px;
  line-height: 1.47;
}
.safety-notice strong {
  flex: 0 0 auto;
  color: #1d1d1f;
}
.container-tabs button {
  border-radius: 999px;
}
.guide {
  max-width: 980px;
  margin: 96px auto;
}
.guide > h2 {
  font-size: clamp(34px, 4vw, 48px);
  letter-spacing: -0.035em;
}
.guide article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}
.guide article > b {
  color: #0066cc;
}
footer {
  color: #6e6e73;
  background: #f5f5f7;
  border-top: 1px solid var(--line);
}
footer span {
  color: #1d1d1f;
}
footer p,
footer small {
  color: #6e6e73;
}
@media (max-width: 760px) {
  .topbar {
    height: 48px;
    padding: 0 16px;
  }
  .brand {
    flex: 1;
    justify-content: center;
    transform: translateX(26px);
  }
  .brand-mark {
    display: none;
  }
  .workspace {
    margin: 16px 0 48px;
  }
  .control-panel,
  .result-panel {
    padding: 24px 18px;
  }
  .control-heading {
    gap: 8px;
  }
  .step-heading {
    gap: 10px;
  }
  .canvas-wrap {
    height: 390px;
  }
  .result-header {
    gap: 12px;
  }
  .view-actions button {
    padding-inline: 12px;
  }
  .guide {
    margin: 64px auto;
    padding: 0 18px;
  }
  footer {
    padding: 36px 20px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}