:root {
  --ink: #172434; --secondary: #506076; --muted: #657287;
  --canvas: #f5f7fa; --paper: #fff; --rule: #dce3eb; --soft: #edf1f6;
  --navy: #162c35; --navy-soft: #25434b; --accent: #2454d5; --accent-hover: #163fab;
  --success: #176348; --success-bg: #e9f5ee; --warning: #805910; --warning-bg: #fff5df;
  --danger: #a02e35; --danger-bg: #fcecee; --focus: #edb338;
  --radius: 8px; --space: 8px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink); background: var(--canvas); font-size: 14px; line-height: 1.5;
}
* {box-sizing: border-box; min-width: 0;}
body {margin: 0; overflow-x: clip;}
a {color: var(--accent); text-underline-offset: 3px;}
button, input, select, textarea {font: inherit;}
button, .button {min-height: 44px; padding: 10px 16px; border: 1px solid var(--rule); border-radius: 6px; background: var(--paper); color: var(--ink); cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; line-height: 1.3;}
button:hover, .button:hover {background: var(--soft); border-color: var(--secondary);}
button.primary, .button.primary {background: var(--accent); border-color: var(--accent); color: var(--paper);}
button.primary:hover {background: var(--accent-hover);}
button.danger {color: var(--danger); border-color: var(--danger);}
button:disabled {opacity: .5; cursor: not-allowed;}
:focus-visible {outline: 3px solid var(--focus); outline-offset: 3px;}
input, select, textarea {width: 100%; min-height: 44px; border: 1px solid #b7c3d1; border-radius: 6px; padding: 10px 12px; color: var(--ink); background: var(--paper);}
input[type=checkbox] {width: 18px; min-height: 18px; height: 18px; accent-color: var(--accent);}
textarea {min-height: 112px; resize: vertical;}
label {font-weight: 600; display: block;}
label > input, label > select, label > textarea {margin-top: 6px;}
fieldset {padding: 16px; border: 1px solid var(--rule); border-radius: 6px; margin: 0;}
legend {font-weight: 650; padding: 0 6px;}
h1, h2, h3, p {margin: 0;}
h1 {font-family: "Avenir Next", "Segoe UI", sans-serif; font-size: 32px; line-height: 1.15; letter-spacing: -.9px; font-weight: 700;}
h2 {font-size: 19px; line-height: 1.3; letter-spacing: -.25px;}
h3 {font-size: 15px;}
p + p {margin-top: 8px;}
small, .hint, .subtle {color: var(--secondary); font-size: 13px; font-weight: 400;}
.hint {display: block; margin-top: 6px;}
.stack {display: grid; gap: 16px;}
.row {display: flex; flex-wrap: wrap; align-items: center; gap: 8px;}
.spread {justify-content: space-between;}
.grow {flex: 1 1 200px;}
.grid {display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px;}
.full {grid-column: 1 / -1;}
.check {display: flex; gap: 10px; align-items: center; min-height: 44px; font-weight: 500;}
.check input {margin: 0; flex: 0 0 auto;}
.skip {position: fixed; top: -80px; left: 16px; z-index: 20; padding: 12px 16px; background: var(--paper);}
.skip:focus {top: 8px;}
.shell {display: grid; grid-template-columns: 208px minmax(0,1fr); min-height: 100vh;}
.sidebar {background: var(--navy); color: var(--paper); padding: 32px 16px 24px; display: flex; flex-direction: column; gap: 32px;}
.wordmark {font-size: 22px; font-weight: 750; letter-spacing: -.7px; padding: 0 16px;}
.wordmark span {font-weight: 400; font-size: 14px; opacity: .75; margin-left: 8px; letter-spacing: 0;}
.sidebar nav {display: grid; gap: 6px;}
.sidebar nav a {min-height: 44px; display: flex; align-items: center; gap: 12px; color: #c9d7dc; text-decoration: none; padding: 12px 16px; border-radius: 6px; font-weight: 550;}
.sidebar nav a:hover {background: var(--navy-soft); color: var(--paper);}
.sidebar nav a[aria-current=page] {background: var(--paper); color: var(--navy);}
.nav-icon {width: 20px; height: 20px; flex-shrink: 0;}
.sidebar-foot {margin-top: auto; padding: 16px; color: #c9d7dc; font-size: 12px; border-top: 1px solid #38515a;}
.topbar {min-height: 76px; padding: 16px 40px; background: var(--paper); border-bottom: 1px solid var(--rule); display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;}
.topbar strong {font-size: 14px;}
.topbar .account {display: flex; gap: 16px; align-items: center; flex-wrap: wrap;}
.workspace {padding: 36px 40px 48px; max-width: 1720px; margin: 0 auto;}
.page-head {display: flex; gap: 20px; flex-wrap: wrap; align-items: center; justify-content: space-between; margin-bottom: 24px;}
.page-head .subtle {margin-top: 8px;}
.panel {background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); padding: 24px;}
.panel.flush {padding: 0; overflow: hidden;}
.panel-head {padding: 20px 24px; border-bottom: 1px solid var(--rule);}
.toolbar {padding: 20px 24px; display: flex; align-items: end; flex-wrap: wrap; gap: 12px; border-bottom: 1px solid var(--rule);}
.toolbar label {flex: 1 1 140px; font-size: 12px;}
.toolbar label.search {flex: 2 1 220px;}
.toolbar button {flex: 0 0 auto;}
.notice {padding: 14px 18px; border: 1px solid var(--rule); border-left: 1px solid var(--accent); border-radius: 6px; background: var(--paper); margin-bottom: 20px; color: var(--secondary);}
.notice.warning {border-left-color: var(--warning); background: var(--warning-bg); color: var(--warning);}
.notice.error, .error {color: var(--danger); background: var(--danger-bg); border-radius: 6px; padding: 12px 16px;}
.notice.success {color: var(--success); border-left-color: var(--success); background: var(--success-bg);}
.status-line {min-height: 24px; margin-bottom: 12px; color: var(--secondary);}
.table-wrap {overflow-x: auto;}
table {width: 100%; border-collapse: collapse; text-align: left;}
th {padding: 12px 20px; color: var(--secondary); font-size: 12px; font-weight: 600; background: #fafbfd; border-bottom: 1px solid var(--rule);}
td {padding: 15px 20px; border-bottom: 1px solid var(--soft); vertical-align: middle; overflow-wrap: anywhere;}
tr:last-child td {border-bottom: 0;}
.contact-name {font-size: 14px; font-weight: 650; text-decoration: none;}
.identity {display: flex; align-items: center; gap: 12px;}
.avatar {width: 34px; height: 34px; display: inline-flex; flex: 0 0 auto; align-items: center; justify-content: center; border-radius: 7px; color: var(--success); background: var(--success-bg); font-size: 12px; font-weight: 700;}
.badge {display: inline-flex; align-items: center; gap: 5px; padding: 4px 8px; border-radius: 4px; background: var(--soft); color: var(--secondary); font-size: 12px; font-weight: 550; overflow-wrap: anywhere;}
.badge.good {color: var(--success); background: var(--success-bg);}
.badge.warn {color: var(--warning); background: var(--warning-bg);}
.badge.bad {color: var(--danger); background: var(--danger-bg);}
.badge::before {content: '•'; font-weight: 900;}
.pager {padding: 16px 24px; display: flex; gap: 16px; flex-wrap: wrap; align-items: center; justify-content: space-between; border-top: 1px solid var(--rule);}
.empty {padding: 56px 24px; text-align: center; display: grid; justify-items: center; gap: 12px;}
.empty p {max-width: 460px; color: var(--secondary);}
.detail-layout {display: grid; grid-template-columns: minmax(0,1.3fr) minmax(0,1fr); gap: 24px; align-items: start;}
.definition {display: grid; grid-template-columns: 130px minmax(0,1fr); gap: 10px 16px; margin: 0;}
dt {color: var(--secondary);}
dd {margin: 0; overflow-wrap: anywhere;}
.evidence {padding: 16px 0; border-top: 1px solid var(--rule);}
.evidence:first-child {border-top: 0; padding-top: 0;}
.prose {white-space: pre-wrap; overflow-wrap: anywhere;}
.danger-zone {border-color: #e8bfc3;}
.steps {display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0 0 24px; counter-reset: step;}
.steps li {counter-increment: step; flex: 1 1 150px; border-bottom: 2px solid var(--rule); padding: 12px 0; color: var(--secondary); font-size: 13px;}
.steps li::before {content: counter(step) '. '; font-weight: 700; color: var(--accent);}
.arithmetic {display: flex; gap: 16px; flex-wrap: wrap; padding: 20px; background: var(--success-bg); border-radius: 6px;}
.arithmetic div {flex: 1 1 110px;}
.arithmetic strong {display: block; font-size: 26px; font-variant-numeric: tabular-nums; color: var(--success);}
.arithmetic small {display: block;}
.metrics {display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); border-radius: 6px; overflow: hidden;}
.metric {padding: 18px; background: var(--paper);}
.metric strong {font-size: 25px; display: block; font-variant-numeric: tabular-nums;}
.preview {width: 100%; min-height: 440px; border: 1px solid var(--rule); border-radius: 6px; background: var(--paper);}
.code {font: 12px ui-monospace, monospace; background: var(--soft); padding: 12px; white-space: pre-wrap; overflow-wrap: anywhere;}
.boot {padding: 72px 24px; max-width: 500px; margin: auto;}
.auth {min-height: 100vh; display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr);}
.auth-story {background: var(--navy); color: var(--paper); padding: 56px; display: flex; flex-direction: column; justify-content: space-between; gap: 56px;}
.auth-story h2 {font-size: 36px; max-width: 420px; letter-spacing: -1px;}
.auth-story p {color: #c9d7dc; max-width: 380px; margin-top: 20px;}
.auth-content {display: flex; align-items: center; justify-content: center; padding: 48px 24px;}
.auth-form {width: 100%; max-width: 360px;}
dialog {border: 1px solid var(--rule); border-radius: 12px; padding: 0; max-width: 680px; width: calc(100% - 32px); color: var(--ink); max-height: calc(100dvh - 32px); overflow: auto;}
dialog::backdrop {background: rgb(16 31 45 / .5);}
.dialog-head {padding: 24px; border-bottom: 1px solid var(--rule); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; align-items: center;}
.dialog-body {padding: 24px;}
.dialog-actions {display: flex; flex-wrap: wrap; justify-content: end; gap: 8px; padding-top: 8px;}
hr {border: 0; border-top: 1px solid var(--rule); width: 100%; margin: 8px 0;}
@media (min-width: 1300px) {.workspace {padding: 40px 48px;} .topbar {padding-inline: 48px;}}
@media (max-width: 1050px) {.shell {grid-template-columns: 176px minmax(0,1fr);} .workspace, .topbar {padding-inline: 24px;} .sidebar {padding-inline: 8px;} .detail-layout {grid-template-columns: minmax(0,1fr);} .contact-table th,.contact-table td {padding-inline: 12px;}}
@media (max-width: 760px) {
  .shell {display: block;} .sidebar {padding: 16px; gap: 16px;} .wordmark {padding: 0;}
  .sidebar nav {display: flex; flex-wrap: wrap; gap: 4px;} .sidebar nav a {padding: 8px 12px; min-height: 44px; font-size: 13px;} .nav-icon {width: 16px; height: 16px;} .sidebar-foot {display: none;}
  .topbar {padding: 12px 20px; min-height: 64px;} .topbar > .subtle {display: none;} .topbar .account {width: 100%; justify-content: space-between; gap: 8px;}
  .workspace {padding: 24px 16px 40px;} h1 {font-size: 28px;} .page-head {gap: 16px; margin-bottom: 20px;}
  .panel {padding: 20px;} .panel-head,.toolbar,.pager {padding: 16px;} .grid {grid-template-columns: minmax(0,1fr);} .definition {grid-template-columns: 100px minmax(0,1fr);}
  .contact-table thead {display: none;} .contact-table tbody {display: grid;} .contact-table tr {display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); padding: 16px; border-bottom: 1px solid var(--rule); gap: 12px;}
  .contact-table td {border: 0; padding: 0;} .contact-table td:first-child {grid-column: 1/-1;} .contact-table td[data-label]::before {content: attr(data-label); display: block; font-size: 12px; color: var(--secondary); margin-bottom: 4px;} .contact-table td:last-child {grid-column: 1/-1;}
  .operations-table thead {display: none;}
  .operations-table tbody {display: grid;}
  .operations-table tr {display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px 16px; padding: 16px 0; border-bottom: 1px solid var(--rule);}
  .operations-table tr:last-child {border-bottom: 0;}
  .operations-table td {border: 0; padding: 0;}
  .operations-table td:first-child {grid-column: 1 / -1; font-weight: 650; overflow-wrap: normal;}
  .operations-table td[data-label]::before {content: attr(data-label); display: block; margin-bottom: 4px; color: var(--secondary); font-size: 12px;}
  .auth {grid-template-columns: minmax(0,1fr);} .auth-story {padding: 24px; gap: 24px;} .auth-story h2 {font-size: 25px;} .auth-story .auth-intro {display: none;} .auth-content {padding-block: 40px;}
  .metrics {grid-template-columns: repeat(2,minmax(0,1fr));} .steps li {flex-basis: 40%;} .dialog-body,.dialog-head {padding: 20px;}
}
@media (prefers-reduced-motion: no-preference) {button,a {transition: background-color 120ms ease, border-color 120ms ease;}}

::selection {background: var(--success-bg); color: var(--ink);}
input, textarea {caret-color: var(--accent);}
button:active, .button:active {transform: translateY(1px);}

/* Keep campaign reading order 1–4; only the desktop preview spans grid rows. */
.campaign-layout > .campaign-preview {grid-column: 2; grid-row: 1 / span 3;}
@media (max-width: 1050px) {
  .campaign-layout > .campaign-preview {grid-column: auto; grid-row: auto;}
}