:root {
  --bg:            #0c0e12;
  --bg-glow:       #16191f;
  --surface:       #14171c;
  --surface-2:     #1a1e24;
  --surface-3:     #21262e;
  --surface-4:     #2a303a;
  --border:        #1c2027;
  --border-2:      #262b33;
  --border-strong: #39404b;
  --text:          #e4e7eb;
  --text-2:        #a8b1bd;
  --text-3:        #9099a6;
  --text-inv:      #0c0e12;
  --on-accent:     #0c0e12;

  --accent:        #7e8cf5;
  --accent-2:      #98a3f8;
  --accent-dim:    rgba(126,140,245,.14);
  --accent-line:   rgba(126,140,245,.42);

  --ok:            #56c08e;
  --ok-dim:        rgba(86,192,142,.13);
  --warn:          #e8b84b;
  --warn-dim:      rgba(232,184,75,.13);
  --danger:        #e67770;
  --danger-dim:    rgba(224,87,79,.15);
  --info:          #6ba8c9;
  --info-dim:      rgba(107,168,201,.13);
  --idle:          #7c8593;
  --idle-dim:      rgba(124,133,147,.14);

  --rail: var(--surface);
  --panel: var(--surface);
  --panel-2: var(--surface-2);
  --line: var(--border-2);
  --line-soft: var(--border);
  --muted: var(--text-2);
  --quiet: var(--text-3);
  --violet: var(--accent);
  --violet-2: var(--accent-2);
  --green: var(--ok);
  --amber: var(--warn);
  --red: var(--danger);
  --blue: var(--info);
  --shadow: 0 8px 24px -8px rgba(0,0,0,.6), 0 2px 6px rgba(0,0,0,.35);
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  --bg:            #eff0f2;
  --bg-glow:       #e4e6ea;
  --surface:       #ffffff;
  --surface-2:     #f7f8f9;
  --surface-3:     #eef0f2;
  --surface-4:     #e3e6e9;
  --border:        #e2e4e8;
  --border-2:      #d0d4da;
  --border-strong: #afb6bf;
  --text:          #14171c;
  --text-2:        #4a515b;
  --text-3:        #5f6673;
  --text-inv:      #ffffff;
  --on-accent:     #ffffff;

  --accent:        #525ac5;
  --accent-2:      #434aae;
  --accent-dim:    rgba(82,90,197,.09);
  --accent-line:   rgba(82,90,197,.32);

  --ok:            #267352;
  --ok-dim:        rgba(38,115,82,.10);
  --warn:          #826013;
  --warn-dim:      rgba(130,96,19,.11);
  --danger:        #ba372e;
  --danger-dim:    rgba(186,55,46,.09);
  --info:          #2a6e87;
  --info-dim:      rgba(42,110,135,.10);
  --idle:          #5f6572;
  --idle-dim:      rgba(95,101,114,.11);

  --shadow: 0 8px 22px -10px rgba(18,21,26,.20), 0 1px 3px rgba(18,21,26,.07);
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 14px; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
button, [role="button"] { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, tr[tabindex]:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 70%, var(--text)); outline-offset: 2px; }
a { color: var(--blue); }
code, pre, .mono { font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
[hidden] { display: none !important; }
.eyebrow { margin: 0 0 10px; color: var(--violet-2); font-size: 11px; font-weight: 800; letter-spacing: .13em; }
.lede { color: var(--muted); font-size: 15px; line-height: 1.7; }
.fineprint { color: var(--quiet); font-size: 12px; line-height: 1.6; }

.signin-shell { min-height: 100vh; display: grid; grid-template-columns: minmax(480px, 44%) 1fr; }
.signin-panel { padding: clamp(48px, 7vw, 112px); align-content: center; background: var(--rail); border-right: 1px solid var(--line); }
.signin-panel h1 { max-width: 600px; margin: 16px 0 14px; font-size: clamp(34px, 4vw, 56px); line-height: 1.04; letter-spacing: -.045em; }
.signin-panel .lede { max-width: 650px; }
.signin-panel form { display: grid; gap: 9px; max-width: 520px; margin-top: 28px; }
label { color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .02em; }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 9px; padding: 12px 13px; background: var(--panel); color: var(--text); }
textarea { min-height: 100px; resize: vertical; }
input::placeholder, textarea::placeholder { color: var(--quiet); }
.factor-list { display: grid; gap: 10px; max-width: 520px; margin: 26px 0 0; padding: 0; list-style: none; }
.factor-list li { display: grid; grid-template-columns: 34px 1fr; gap: 1px 12px; align-items: center; padding: 12px; border: 1px solid var(--line-soft); border-radius: 10px; background: var(--panel); }
.factor-list li > span { grid-row: 1 / 3; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px; background: color-mix(in srgb, var(--violet) 18%, transparent); color: var(--violet-2); font-weight: 800; }
.factor-list small { color: var(--muted); }
.signin-context { position: relative; overflow: hidden; padding: clamp(56px, 9vw, 150px); align-content: center; background: radial-gradient(circle at 68% 34%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 32%), linear-gradient(145deg, var(--bg), var(--surface-2) 52%, var(--surface)); }
.signin-context h2 { max-width: 700px; margin: 0; font-size: clamp(38px, 5vw, 70px); line-height: 1.02; letter-spacing: -.05em; }
.signin-context > p:not(.eyebrow) { max-width: 660px; color: var(--text-2); font-size: 17px; line-height: 1.75; }
.trust-grid { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 680px; margin-top: 40px; border: 1px solid var(--border-strong); border-radius: 14px; backdrop-filter: blur(8px); }
.trust-grid div { padding: 22px; border-right: 1px solid var(--border-strong); border-bottom: 1px solid var(--border-strong); }
.trust-grid div:nth-child(2n) { border-right: 0; }
.trust-grid div:nth-last-child(-n+2) { border-bottom: 0; }
.trust-grid dt { color: var(--text); font-size: 30px; font-weight: 800; }
.trust-grid dd { margin: 5px 0 0; color: var(--text-2); }
.ambient-orbit { position: absolute; right: -120px; top: 4%; width: 610px; height: 610px; border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent); border-radius: 50%; }
.ambient-orbit span { position: absolute; inset: 13%; border: 1px solid color-mix(in srgb, var(--accent) 17%, transparent); border-radius: inherit; }
.ambient-orbit span:nth-child(2) { inset: 27%; }
.ambient-orbit span:nth-child(3) { inset: 42%; background: var(--accent-dim); box-shadow: 0 0 120px color-mix(in srgb, var(--accent) 28%, transparent); }

.brand { height: 56px; display: flex; align-items: center; gap: 10px; padding: 0 14px; border-bottom: 1px solid var(--line); font-weight: 800; font-size: 15px; }
.brand small { display: block; margin-top: 1px; color: var(--quiet); font-size: 9px; letter-spacing: .14em; }
.brand-large { height: auto; padding: 0; margin-bottom: 70px; border: 0; font-size: 19px; }
.brand-mark { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px; color: var(--on-accent); background: linear-gradient(145deg, var(--accent-2), var(--accent)); box-shadow: 0 0 24px color-mix(in srgb, var(--accent) 48%, transparent); }
.brand-large .brand-mark { width: 40px; height: 40px; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 254px minmax(0, 1fr); }
.rail { position: fixed; inset: 0 auto 0 0; width: 254px; display: flex; flex-direction: column; background: var(--rail); border-right: 1px solid var(--line); z-index: 20; }
.rail nav { min-height: 0; overflow-y: auto; padding: 8px 10px 85px; }
.rail nav > p { margin: 13px 9px 6px; color: var(--quiet); font-size: 10px; font-weight: 900; letter-spacing: .1em; }
.nav-item { width: 100%; display: grid; grid-template-columns: 18px 1fr auto; gap: 8px; align-items: center; padding: 8px 10px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); text-align: left; }
.nav-item:hover { color: var(--text); background: var(--panel-2); }
.nav-item.active { color: var(--text); background: color-mix(in srgb, var(--violet) 20%, var(--panel)); box-shadow: inset 3px 0 var(--violet); }
.nav-item b { min-width: 19px; padding: 2px 5px; border: 1px solid var(--line); border-radius: 999px; color: var(--text); font-size: 10px; text-align: center; }
.nav-item em { color: var(--quiet); font-size: 9px; font-style: normal; text-transform: uppercase; }
.search-button { display: flex; gap: 8px; align-items: center; margin: 10px; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--quiet); text-align: left; }
.search-button kbd { margin-left: auto; padding: 2px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--rail); font-size: 10px; }
.operator-card { position: absolute; inset: auto 0 0; display: grid; grid-template-columns: 32px 1fr 28px; gap: 8px; align-items: center; padding: 11px 10px; border-top: 1px solid var(--line); background: var(--rail); }
.operator-card small { display: block; color: var(--quiet); font-size: 10px; }
.operator-card button, .top-actions button { border: 0; background: transparent; color: var(--muted); }
.avatar { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 9px; background: linear-gradient(135deg, var(--surface-4), var(--surface-2)); font-size: 10px; font-weight: 800; }
.workspace { grid-column: 2; min-width: 0; }
.topbar { position: sticky; top: 0; z-index: 15; height: 56px; display: grid; grid-template-columns: minmax(260px, 1fr) auto auto; gap: 16px; align-items: center; padding: 0 17px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--rail) 92%, transparent); backdrop-filter: blur(12px); }
.topbar > div:first-child { display: flex; gap: 9px; align-items: baseline; }
.topbar small { color: var(--quiet); }
.signal-pills { display: flex; gap: 5px; }
.signal-pills span { display: flex; gap: 5px; align-items: center; padding: 5px 9px; border: 1px solid var(--line); border-radius: 999px; background: var(--panel); color: var(--muted); font-size: 11px; }
.signal-pills i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px color-mix(in srgb, var(--green) 75%, transparent); }
.signal-pills b { color: var(--text); }
.top-actions { display: flex; gap: 2px; }
.top-actions button { width: 34px; height: 34px; border-radius: 8px; font-size: 16px; }
.top-actions button:hover { background: var(--panel); }
.content { max-width: 1500px; margin: 0 auto; padding: 26px 26px 60px; }
.page-heading { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; margin-bottom: 20px; }
.page-heading h1 { margin: 0 0 5px; font-size: 26px; letter-spacing: -.025em; }
.page-heading p { max-width: 750px; margin: 0; color: var(--muted); line-height: 1.6; }
.button { min-height: 36px; padding: 8px 13px; border: 1px solid var(--line); border-radius: 8px; font-weight: 750; }
.button.primary { border-color: var(--accent-line); background: var(--accent); color: var(--on-accent); box-shadow: 0 6px 20px var(--accent-dim); }
.button.secondary { background: var(--panel); color: var(--text); }
.button.danger { border-color: color-mix(in srgb, var(--red) 58%, var(--line)); background: color-mix(in srgb, var(--red) 14%, var(--panel)); color: var(--red); }
.button.small { min-height: 32px; padding: 6px 10px; font-size: 11px; }
.table-scroll { overflow-x: auto; }
#add-passkey-form { display: grid; gap: 9px; }
.button:disabled { cursor: not-allowed; opacity: .45; }
.button.wide { margin-top: 8px; width: 100%; }
.button-row { display: flex; gap: 9px; flex-wrap: wrap; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 14px; }
.metric, .panel { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.metric { min-height: 116px; padding: 17px; }
.metric small { display: block; color: var(--quiet); font-size: 10px; font-weight: 800; letter-spacing: .05em; }
.metric strong { display: block; margin: 7px 0 2px; font-size: 24px; }
.metric p { margin: 0; color: var(--muted); font-size: 11px; }
.metric strong.good { color: var(--green); }
.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(360px, 1fr); gap: 14px; }
.stack { display: grid; gap: 14px; align-content: start; }
.panel-header { min-height: 52px; display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.panel-header h2, .panel-header h3 { margin: 0; font-size: 14px; }
.panel-header small { color: var(--quiet); }
.panel-body { padding: 16px; }
.host-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px; }
.host-card { padding: 15px; border: 1px solid var(--line); border-radius: 11px; background: color-mix(in srgb, var(--panel-2) 64%, transparent); }
.host-card button { width: 100%; padding: 0; border: 0; background: none; text-align: left; }
.host-card h3 { margin: 0; font-family: "Cascadia Code", Consolas, monospace; font-size: 13px; }
.host-card h3::before { content: "●"; margin-right: 8px; color: var(--green); font-size: 10px; }
.host-card.offline h3::before { color: var(--red); }
.host-card p { margin: 5px 0 12px; color: var(--muted); font-size: 11px; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { padding: 3px 7px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel-2); color: var(--muted); font: 10px "Cascadia Code", Consolas, monospace; }
.tag.good { border-color: color-mix(in srgb, var(--green) 40%, var(--line)); color: var(--green); }
.tag.warn { border-color: color-mix(in srgb, var(--amber) 45%, var(--line)); color: var(--amber); }
.tag.bad { border-color: color-mix(in srgb, var(--red) 45%, var(--line)); color: var(--red); }
.signal-list { display: grid; gap: 15px; margin: 0; padding: 0; list-style: none; }
.signal-list li { position: relative; padding-left: 17px; }
.signal-list li::before { content: ""; position: absolute; left: 0; top: 5px; width: 7px; height: 7px; border-radius: 50%; background: var(--green); }
.signal-list li.bad::before { background: var(--red); }
.signal-list strong { display: block; font-size: 12px; }
.signal-list small { color: var(--muted); }
.signal-list .tag { float: right; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
caption { padding: 12px 16px; color: var(--muted); text-align: left; }
th { padding: 10px 14px; color: var(--blue); font-size: 10px; letter-spacing: .06em; text-align: left; }
td { padding: 12px 14px; border-top: 1px solid var(--line); color: var(--muted); vertical-align: middle; }
td strong { color: var(--text); }
tr[data-detail] { cursor: pointer; }
tr[data-detail]:hover { background: color-mix(in srgb, var(--violet) 7%, transparent); }
.empty { padding: 34px; color: var(--muted); text-align: center; }
.two-column { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(340px, .7fr); gap: 14px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.form-field { display: grid; gap: 7px; }
.host-selector { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.host-option { position: relative; display: grid; gap: 5px; padding: 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel-2); }
.host-option:has(input:checked) { border-color: var(--violet); box-shadow: inset 0 0 0 1px var(--violet); }
.host-option input { position: absolute; top: 12px; right: 12px; width: auto; }
.host-option small { color: var(--muted); }
.policy-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.policy-list li { display: grid; grid-template-columns: 21px 1fr; gap: 8px; color: var(--muted); }
.policy-list li::before { content: "✓"; color: var(--green); font-weight: 900; }
.policy-list li.refused::before { content: "×"; color: var(--red); }
.callout { margin-top: 16px; padding: 12px 14px; border: 1px solid color-mix(in srgb, var(--amber) 38%, var(--line)); border-radius: 9px; background: color-mix(in srgb, var(--amber) 8%, var(--panel)); color: var(--muted); line-height: 1.5; }
.callout.error { border-color: color-mix(in srgb, var(--red) 45%, var(--line)); color: var(--red); }
.callout.good { border-color: color-mix(in srgb, var(--green) 45%, var(--line)); color: var(--green); }
.ledger { display: grid; gap: 0; }
.ledger-event { position: relative; margin-left: 12px; padding: 4px 0 18px 27px; border-left: 1px solid var(--line); }
.ledger-event::before { content: "◇"; position: absolute; left: -11px; top: 0; display: grid; place-items: center; width: 21px; height: 21px; border: 1px solid var(--violet); border-radius: 7px; background: var(--panel); color: var(--violet-2); font-size: 10px; }
.ledger-event strong { display: block; }
.ledger-event p { margin: 4px 0; color: var(--muted); font-size: 11px; }
.ledger-event code { color: var(--quiet); font-size: 10px; overflow-wrap: anywhere; }
.domain-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.domain-card { min-height: 130px; padding: 16px; border: 1px solid var(--line); border-radius: 11px; background: var(--panel); }
.domain-card h3 { margin: 7px 0; }
.domain-card p { color: var(--muted); line-height: 1.5; }
.architecture-panel, .control-domains-panel { margin-top: 14px; }
.archwrap { overflow-x: auto; padding: 4px 0; }
.arch { min-width: 700px; width: 100%; height: auto; display: block; }
.arch .box { fill: var(--surface-2); stroke: var(--border-2); stroke-width: 1; rx: 8; }
.arch .box-accent { fill: var(--accent-dim); stroke: var(--accent-line); }
.arch .box-ok { fill: var(--ok-dim); stroke: color-mix(in srgb, var(--ok) 40%, transparent); }
.arch .lbl { fill: var(--text); font-size: 10.5px; font-weight: 600; font-family: inherit; }
.arch .sub { fill: var(--text-2); font-size: 11px; font-family: "Cascadia Code", Consolas, monospace; }
.arch .link { stroke: var(--border-strong); stroke-width: 1.4; fill: none; }
.arch .link-dash { stroke-dasharray: 4 3; }
.arch .flow { stroke: var(--accent); stroke-width: 1.6; fill: none; stroke-dasharray: 5 4; }
.arch .pin { fill: var(--text-2); font-size: 10.5px; font-family: "Cascadia Code", Consolas, monospace; }
.architecture-evidence { display: flex; gap: 7px; flex-wrap: wrap; padding: 12px 16px; border-top: 1px solid var(--line); }
.domain-toolbar { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.domain-toolbar > div:first-child { flex: 1 1 420px; }
.domain-filter { display: inline-flex; gap: 2px; padding: 2px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-3); }
.domain-filter button { min-height: 28px; padding: 4px 10px; border: 0; border-radius: 6px; background: transparent; color: var(--text-2); font-size: 11px; }
.domain-filter button[aria-pressed="true"] { background: var(--surface); color: var(--text); box-shadow: 0 1px 2px color-mix(in srgb, var(--text) 8%, transparent); }
.authority-domain-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 11px; }
.authority-domain-card { min-width: 0; padding: 13px; border: 1px solid var(--border); border-radius: 11px; background: var(--surface-2); color: var(--text); text-align: left; }
.authority-domain-card:hover { border-color: var(--border-strong); background: var(--surface-3); }
.authority-domain-card[data-status="planned"], .authority-domain-card[data-status="reserved"] { opacity: .84; }
.authority-domain-top { display: grid; grid-template-columns: 31px minmax(0, 1fr) auto; gap: 8px; align-items: center; }
.authority-domain-icon { display: grid; place-items: center; width: 29px; height: 29px; border-radius: 8px; background: var(--surface-4); color: var(--text-2); font-size: 9px; font-weight: 800; }
.authority-domain-card[data-status="v1"] .authority-domain-icon { background: var(--accent-dim); color: var(--accent-2); }
.authority-domain-card strong { font-size: 12px; }
.authority-domain-note { display: block; margin-top: 9px; color: var(--text-3); font-size: 11px; line-height: 1.45; }
.domain-contract { margin: 0; padding: 13px 16px; border-top: 1px solid var(--line); color: var(--text-3); font-size: 11px; line-height: 1.55; }

.sheet { width: min(680px, calc(100vw - 32px)); max-height: calc(100vh - 40px); padding: 0; border: 1px solid var(--line); border-radius: 15px; background: var(--panel); color: var(--text); box-shadow: var(--shadow); }
.sheet::backdrop { background: color-mix(in srgb, var(--bg) 72%, transparent); backdrop-filter: blur(4px); }
.sheet-shell { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; max-height: calc(100vh - 42px); }
.sheet header, .sheet footer { display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 16px 19px; border-bottom: 1px solid var(--line); }
.sheet footer { justify-content: flex-end; border-top: 1px solid var(--line); border-bottom: 0; }
.sheet h2 { margin: 0; font-size: 20px; }
.sheet .eyebrow { margin-bottom: 4px; }
.sheet-body { overflow-y: auto; padding: 19px; }
.icon-button { width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); font-size: 20px; }
.digest { display: block; margin: 12px 0; padding: 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--violet-2); overflow-wrap: anywhere; }
.sealed-summary { display: grid; grid-template-columns: 150px 1fr; gap: 9px 15px; margin: 16px 0; }
.sealed-summary dt { color: var(--quiet); }
.sealed-summary dd { margin: 0; color: var(--text); overflow-wrap: anywhere; }
.secret-display { white-space: pre-wrap; user-select: all; padding: 16px; border: 1px solid var(--amber); border-radius: 9px; background: var(--bg); color: var(--text); line-height: 1.7; }
.confirm-row { display: flex; gap: 9px; align-items: flex-start; margin-top: 12px; color: var(--text); }
.confirm-row input { width: auto; margin-top: 3px; }

@media (max-width: 1280px) {
  .app-shell { grid-template-columns: 220px minmax(0, 1fr); }
  .rail { width: 220px; }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dashboard-grid, .two-column { grid-template-columns: 1fr; }
  .signal-pills span { padding-inline: 7px; }
  .signal-pills span:not(:first-child) { display: none; }
  .content { padding-inline: 18px; }
  .authority-domain-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 880px) {
  .signin-shell { grid-template-columns: 1fr; }
  .signin-context { display: none; }
  .signin-panel { padding: 40px 24px; border: 0; }
  .app-shell { display: block; }
  .rail { position: static; width: 100%; height: auto; }
  .rail nav { display: flex; overflow-x: auto; padding: 8px; }
  .rail nav > p, .rail .search-button, .operator-card { display: none; }
  .nav-item { min-width: max-content; width: auto; grid-template-columns: 16px auto auto; }
  .workspace { width: 100%; }
  .topbar { grid-template-columns: 1fr auto; }
  .signal-pills { display: none; }
  .host-cards, .host-selector, .domain-grid, .authority-domain-grid, .form-grid { grid-template-columns: 1fr; }
  .form-grid .full { grid-column: auto; }
  .metrics { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: no-preference) {
  .button, .nav-item, tr { transition: background-color .16s ease, border-color .16s ease, transform .16s ease; }
  .button:not(:disabled):active { transform: translateY(1px); }
}