/* ==========================================================================
   Bindwidth — an instrument, not a landing page.
   Palette taken from lab equipment: cool paper, graphite ink, a single
   indigo for action and an amber that means "this is the limit that binds".
   ========================================================================== */

:root {
  --ink:        #15171c;
  --ink-2:      #3b414c;
  --muted:      #6b7280;
  --faint:      #9aa1ac;
  --canvas:     #eef0f3;
  --panel:      #ffffff;
  --panel-2:    #f7f8fa;
  --line:       #dcdfe5;
  --line-2:     #c6cad2;

  --accent:     #3d3bd4;
  --accent-ink: #2b29a8;
  --accent-bg:  #ececfb;

  --bind:       #a45a06;   /* the binding constraint */
  --bind-bg:    #fdf3e3;
  --ok:         #0f6b47;
  --ok-bg:      #e6f3ed;
  --warn:       #a45a06;
  --bad:        #a8201c;
  --bad-bg:     #fbeceb;

  --r:   6px;
  --r-s: 4px;

  --shadow: 0 1px 2px rgba(21,23,28,.06), 0 4px 14px rgba(21,23,28,.05);

  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: "Space Grotesk", var(--sans);

  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  /* Banner content ~37px; grow with notch padding so sticky masthead clears it */
  --banner-h: calc(37px + var(--safe-top));
  --masthead-h: 52px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

html {
  overflow-x: hidden; /* fallback */
  overflow-x: clip;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overflow-x: clip;
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  max-width: 100%;
}

h1, h2, h3, h4 { font-family: var(--display); font-weight: 600; letter-spacing: -.015em; margin: 0; }

a { color: var(--accent-ink); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--r-s); }

/* ---------- shell ---------- */

.app {
  display: flex; flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: clip;
}

.contrib-banner {
  display: block;
  position: sticky; top: 0; z-index: 50;
  background: #f3e2c4;
  color: var(--ink);
  border-bottom: 1px solid #d9b87a;
  padding: 9px 20px;
  padding-top: calc(9px + var(--safe-top));
  font-size: 12.5px;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
}
.contrib-banner:hover { background: #edd6a8; }
.contrib-banner em { font-style: normal; font-weight: 600; color: var(--bind); }
.contrib-banner .go {
  display: inline-block; margin-left: 8px;
  color: var(--accent-ink); font-weight: 500; white-space: nowrap;
}

.masthead {
  background: var(--ink);
  color: #fff;
  padding: 0 20px;
  display: flex; align-items: center; gap: 18px;
  min-height: var(--masthead-h);
  position: sticky; top: var(--banner-h); z-index: 40;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}
.masthead .wordmark {
  font-family: var(--display); font-weight: 600; font-size: 15px; letter-spacing: -.02em;
  display: flex; align-items: baseline; gap: 8px;
  flex-shrink: 0;
}
.masthead .wordmark span.dim { color: #8d93a0; font-weight: 400; font-size: 12px; }
.masthead .spacer { flex: 1; min-width: 8px; }
.masthead-tools {
  display: flex; align-items: center; gap: 8px;
  min-width: 0;
}
.masthead-actions {
  display: flex; align-items: center; gap: 6px;
  flex-shrink: 0;
}
.masthead .scenario {
  background: #24272f; border: 1px solid #343945; color: #fff;
  border-radius: var(--r-s); padding: 5px 9px; font-size: 12.5px; font-family: var(--sans);
  min-width: 160px; max-width: 220px;
}
.masthead .scenario::placeholder { color: #7b818e; }
.masthead-solo { top: 0; padding-top: var(--safe-top); }
.masthead a.btn { text-decoration: none; display: inline-flex; align-items: center; }

.btn {
  font: inherit; font-size: 12.5px; font-weight: 500;
  border-radius: var(--r-s); padding: 6px 11px; cursor: pointer;
  border: 1px solid var(--line-2); background: var(--panel); color: var(--ink);
  white-space: nowrap; transition: background .12s, border-color .12s;
}
.btn:hover { background: var(--panel-2); border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); }
.btn.ghost-dark { background: transparent; border-color: #3d434f; color: #e6e8ec; }
.btn.ghost-dark:hover { background: #262a33; border-color: #555c6a; }
.btn.sm { padding: 3px 8px; font-size: 11.5px; }

/* ---------- nav ---------- */

.tabs {
  background: var(--panel); border-bottom: 1px solid var(--line);
  padding: 0 20px; display: flex; gap: 2px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  position: sticky; top: calc(var(--banner-h) + var(--masthead-h)); z-index: 30;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  width: 100%;
  max-width: 100%;
  min-width: 0; /* flex column default min-width:auto expands the page to fit all tabs */
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  border: 0; background: none; font: inherit; font-size: 13px;
  padding: 11px 13px; cursor: pointer; color: var(--muted);
  border-bottom: 2px solid transparent; white-space: nowrap;
  flex-shrink: 0;
}
.tab:hover { color: var(--ink); }
.tab[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); font-weight: 500; }
.tab .idx { font-family: var(--mono); font-size: 10.5px; color: var(--faint); margin-right: 6px; }
.tab[aria-current="page"] .idx { color: var(--accent); }

/* ---------- layout ---------- */

.main {
  flex: 1;
  padding: 22px 20px calc(90px + var(--safe-bottom));
  max-width: 1360px; width: 100%; margin: 0 auto;
  min-width: 0;
}
.stack { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.grid { display: grid; gap: 18px; min-width: 0; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr)); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr)); }
.domain-note { grid-column: span 2; min-width: 0; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow); min-width: 0; }
.panel > header {
  padding: 13px 16px; border-bottom: 1px solid var(--line);
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
}
.panel > header h2 { font-size: 14.5px; }
.panel > header .hint { font-size: 12px; color: var(--muted); font-weight: 400; }
.panel > header select { max-width: min(100%, 280px); }
.panel > .body { padding: 16px; min-width: 0; }
.panel > .body.tight { padding: 0; }

.lede { font-size: 13.5px; color: var(--ink-2); max-width: 76ch; }
.lede strong { color: var(--ink); }

/* ---------- fields ---------- */

.field { display: grid; grid-template-columns: 1fr minmax(96px, 128px); gap: 10px; align-items: center; padding: 7px 0; min-width: 0; }
.field + .field { border-top: 1px dotted var(--line); }
.field label { font-size: 13px; min-width: 0; overflow-wrap: anywhere; }
.field .sub { display: block; font-size: 11.5px; color: var(--muted); line-height: 1.4; margin-top: 2px; }
.field .unit { font-family: var(--mono); font-size: 10.5px; color: var(--faint); text-transform: uppercase; letter-spacing: .04em; }

input[type="number"], input[type="text"], select {
  font: inherit; font-family: var(--mono); font-size: 13px;
  width: 100%; max-width: 100%; padding: 5px 8px; text-align: right;
  border: 1px solid var(--line-2); border-radius: var(--r-s);
  background: var(--panel); color: var(--ink);
  min-width: 0;
}
select { text-align: left; font-family: var(--sans); }
input:focus, select:focus { border-color: var(--accent); }
input[type="checkbox"] { width: 15px; height: 15px; accent-color: var(--accent); }
.field.check { grid-template-columns: 1fr auto; }

.derived input { background: var(--accent-bg); border-color: transparent; color: var(--accent-ink); font-weight: 600; }

/* ---------- tables ---------- */

.tbl { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.tbl th {
  text-align: left; font-weight: 600; font-size: 10.5px; text-transform: uppercase;
  letter-spacing: .05em; color: var(--muted); padding: 9px 12px;
  border-bottom: 1px solid var(--line); background: var(--panel-2); white-space: nowrap;
}
.tbl td { padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl tbody tr:hover { background: var(--panel-2); }
.tbl .num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.tbl .strong { font-weight: 600; }
.tbl-wrap {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}
tr.is-best td { background: var(--ok-bg); }
tr.is-best:hover td { background: #dcefe6; }
tr.is-dead td { color: var(--faint); }

/* ---------- signature: the constraint ladder ---------- */

.ladder { display: flex; flex-direction: column; gap: 3px; min-width: 168px; }
.rung { display: grid; grid-template-columns: 70px 1fr 30px; align-items: center; gap: 7px; }
.rung .k { font-family: var(--mono); font-size: 9.5px; text-transform: uppercase; letter-spacing: .05em; color: var(--faint); }
.rung .track { height: 7px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 99px; overflow: hidden; }
.rung .fill { height: 100%; background: var(--line-2); transition: width .3s ease; }
.rung .v { font-family: var(--mono); font-size: 10.5px; color: var(--muted); text-align: right; }
.rung.binds .k { color: var(--bind); font-weight: 700; }
.rung.binds .fill { background: var(--bind); }
.rung.binds .v { color: var(--bind); font-weight: 700; }
.ladder-note { font-size: 10.5px; color: var(--muted); margin-top: 5px; }
.ladder-note b { color: var(--bind); }

/* ---------- badges ---------- */

.badge {
  display: inline-block; font-family: var(--mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: .05em; padding: 2px 6px;
  border-radius: 3px; border: 1px solid var(--line-2); background: var(--panel-2); color: var(--muted);
  white-space: nowrap;
}
.badge.measured   { background: var(--ok-bg);   color: var(--ok);   border-color: #b9dccb; }
.badge.published  { background: var(--accent-bg); color: var(--accent-ink); border-color: #c9c9f2; }
.badge.community  { background: var(--bind-bg); color: var(--bind); border-color: #e8d3ae; }
.badge.estimated  { background: var(--bind-bg); color: var(--bind); border-color: #e8d3ae; }
.badge.kv-derived { background: var(--bad-bg); color: var(--bad); border-color: #eec6c4; }
.badge.derived     { background: var(--bind-bg); color: var(--bind); border-color: #e8d3ae; }
.badge.list-price  { background: var(--panel-2); color: var(--ink-2); }
.badge.aggregator  { background: var(--panel-2); color: var(--ink-2); border-style: dashed; }
.badge.template   { background: var(--panel-2); }
.badge.bad        { background: var(--bad-bg);  color: var(--bad);  border-color: #eec6c4; }
.badge.ok         { background: var(--ok-bg);   color: var(--ok);   border-color: #b9dccb; }
.badge.sovereign  { background: var(--ok-bg);   color: var(--ok);   border-color: #b9dccb; }
.badge.nonsov     { background: var(--bad-bg);  color: var(--bad);  border-color: #eec6c4; }

/* ---------- readouts ---------- */

.readouts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(155px, 100%), 1fr));
  gap: 1px; background: var(--line); border: 1px solid var(--line);
  border-radius: var(--r); overflow: hidden;
}
.readout { background: var(--panel); padding: 12px 14px; min-width: 0; }
.readout .k { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.readout .v {
  font-family: var(--display); font-size: 21px; font-weight: 600; margin-top: 3px;
  font-variant-numeric: tabular-nums; letter-spacing: -.02em;
  overflow-wrap: anywhere;
}
.readout .n { font-size: 11.5px; color: var(--muted); margin-top: 2px; line-height: 1.35; }
.readout.hi .v { color: var(--accent-ink); }
.readout.warn .v { color: var(--bind); }
.readout.bad .v { color: var(--bad); }
.readout.good .v { color: var(--ok); }

/* ---------- verdict bar ---------- */

.verdict {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 35;
  background: var(--ink); color: #fff;
  display: flex; align-items: center; gap: 22px;
  padding: 9px 20px;
  padding-bottom: calc(9px + var(--safe-bottom));
  padding-left: calc(20px + var(--safe-left));
  padding-right: calc(20px + var(--safe-right));
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  box-shadow: 0 -2px 14px rgba(21,23,28,.16);
}
.verdict::-webkit-scrollbar { display: none; }
.verdict .cell { display: flex; flex-direction: column; gap: 1px; white-space: nowrap; flex-shrink: 0; }
.verdict .k { font-family: var(--mono); font-size: 9.5px; text-transform: uppercase; letter-spacing: .06em; color: #8d93a0; }
.verdict .v { font-family: var(--display); font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; }
.verdict .v.pos { color: #ff9d4d; }
.verdict .v.neg { color: #6ee7a8; }
.verdict .spacer { flex: 1; min-width: 8px; }
.verdict .btn.primary {
  background: var(--accent); border-color: var(--accent); color: #fff;
  flex-shrink: 0;
  position: sticky; right: 0;
  /* Keep the CTA legible while the bar scrolls underneath */
  box-shadow: -12px 0 12px 4px var(--ink);
}
.verdict .btn.primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); }

/* ---------- notes ---------- */

.note { font-size: 12.5px; line-height: 1.55; color: var(--ink-2); border-left: 2px solid var(--line-2); padding: 2px 0 2px 12px; }
.note.warn { border-left-color: var(--bind); background: var(--bind-bg); padding: 9px 12px; border-radius: 0 var(--r-s) var(--r-s) 0; }
.note.bad  { border-left-color: var(--bad); background: var(--bad-bg); padding: 9px 12px; border-radius: 0 var(--r-s) var(--r-s) 0; }
.note.info { border-left-color: var(--accent); background: var(--accent-bg); padding: 9px 12px; border-radius: 0 var(--r-s) var(--r-s) 0; }
.note b, .note strong { font-weight: 600; }

.kv { display: grid; grid-template-columns: 1fr auto; gap: 7px 14px; font-size: 12.5px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-family: var(--mono); font-variant-numeric: tabular-nums; text-align: right; }

.sectionlabel {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: .09em; color: var(--faint); margin: 2px 0 8px;
}

/* ---------- footer ---------- */

.foot {
  border-top: 1px solid var(--line); background: var(--panel);
  padding: 26px 20px 34px; margin-top: 26px;
  /* keep credits above the fixed .verdict bar */
  margin-bottom: calc(64px + var(--safe-bottom));
}
.foot-in {
  max-width: 1360px; margin: 0 auto; display: grid; gap: 22px;
  grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
}
.foot h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); margin-bottom: 7px; }
.foot p { margin: 0 0 8px; font-size: 12.5px; color: var(--ink-2); line-height: 1.55; }
.sponsor { border: 1px solid var(--line); border-radius: var(--r); padding: 14px; background: var(--panel-2); }
.sponsor .name { font-family: var(--display); font-weight: 600; font-size: 15px; }
.sponsor .tag { font-size: 12px; color: var(--muted); margin: 2px 0 8px; }

/* ---------- misc ---------- */

.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.hidden-file { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.toast {
  position: fixed;
  bottom: calc(62px + var(--safe-bottom));
  left: 50%; transform: translateX(-50%);
  background: var(--ink); color: #fff; padding: 9px 15px; border-radius: var(--r);
  font-size: 12.5px; z-index: 60; box-shadow: var(--shadow);
  max-width: min(90vw, 420px);
  text-align: center;
}
.toast.err { background: var(--bad); }

/* ---------- first-visit wizard ---------- */

.wizard-overlay {
  position: fixed; inset: 0; z-index: 80;
  background: rgba(21, 23, 28, 0.55);
  display: flex; align-items: center; justify-content: center;
  padding: max(20px, var(--safe-top)) max(20px, var(--safe-right)) max(20px, var(--safe-bottom)) max(20px, var(--safe-left));
  animation: wizard-fade .18s ease;
}
.wizard {
  width: min(560px, 100%);
  max-height: min(92vh, 720px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: 0 8px 40px rgba(21, 23, 28, 0.28);
  display: flex; flex-direction: column;
  overflow: hidden;
  animation: wizard-rise .2s ease;
  min-width: 0;
}
.wizard-progress {
  display: flex; gap: 0;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
  padding: 0 8px;
  flex-shrink: 0;
}
.wizard-step {
  flex: 1;
  display: flex; align-items: center; gap: 6px;
  padding: 11px 8px;
  border-bottom: 2px solid transparent;
  color: var(--faint);
  min-width: 0;
}
.wizard-step.is-done { color: var(--muted); }
.wizard-step.is-current {
  color: var(--ink);
  border-bottom-color: var(--accent);
}
.wizard-step-idx {
  font-family: var(--mono); font-size: 10px; letter-spacing: .04em;
  color: inherit; opacity: .7; flex-shrink: 0;
}
.wizard-step.is-current .wizard-step-idx { color: var(--accent); opacity: 1; }
.wizard-step-label {
  font-size: 12px; font-weight: 500; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.wizard-body {
  padding: 22px 22px 8px;
  overflow-y: auto;
  flex: 1;
}
.wizard-body h2 {
  font-size: 20px;
  margin: 0 0 10px;
  letter-spacing: -.02em;
}
.wizard-fields { margin-top: 14px; }
.wizard-fields .field { grid-template-columns: 1fr 110px; }
.wizard-select { grid-template-columns: 1fr 1.2fr !important; }
.wizard-select select { text-align: left; }
.wizard-model-meta {
  margin-top: 14px;
  padding: 12px 14px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--r-s);
}
.wizard-scenario-groups {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 14px;
}
.wizard-scenario-group h3 {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
}
.wizard-scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.wizard-scenario-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
  padding: 12px 12px 11px;
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  background: var(--panel-2);
  color: inherit;
  cursor: pointer;
  font: inherit;
  min-height: 96px;
  transition: border-color .12s ease, background .12s ease, box-shadow .12s ease;
}
.wizard-scenario-card strong {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -.01em;
}
.wizard-scenario-card span {
  font-size: 12px;
  line-height: 1.45;
  color: var(--muted);
}
.wizard-scenario-card:hover {
  border-color: #c5cad3;
  background: #fff;
}
.wizard-scenario-card.is-selected {
  border-color: var(--accent);
  background: #fffaf2;
  box-shadow: inset 0 0 0 1px var(--accent);
}
.wizard-scenario-card.is-selected span { color: #5c5246; }
.wizard-ladder {
  margin-top: 16px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  background: var(--panel-2);
}
.wizard-actions {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding: 14px 22px 18px;
  border-top: 1px solid var(--line);
  flex-shrink: 0;
}
.wizard-actions .spacer { flex: 1; min-width: 8px; }
.wizard-actions .btn { min-height: 40px; }
.wizard-actions .btn:disabled {
  opacity: .45;
  cursor: not-allowed;
}

@keyframes wizard-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes wizard-rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

details.expand { border-top: 1px solid var(--line); }
details.expand summary { cursor: pointer; padding: 9px 12px; font-size: 12.5px; color: var(--muted); list-style: none; }
details.expand summary::-webkit-details-marker { display: none; }
details.expand summary::before { content: "▸ "; color: var(--faint); }
details.expand[open] summary::before { content: "▾ "; }
details.expand summary:hover { color: var(--ink); background: var(--panel-2); }
details.expand .inner { padding: 0 12px 14px; font-size: 12.5px; color: var(--ink-2); line-height: 1.6; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ---------- contribute page ---------- */

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 36px 20px 80px;
}
.page-back {
  display: inline-block;
  font-size: 12.5px;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 22px;
}
.page-back:hover { color: var(--ink); }
.page h1 {
  font-family: var(--display);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -.02em;
  margin: 0 0 10px;
  line-height: 1.2;
}
.page .lede {
  font-size: 16px;
  color: var(--ink-2);
  line-height: 1.55;
  margin: 0 0 32px;
}
.page h2 {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 600;
  margin: 28px 0 8px;
}
.page p, .page li {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.6;
  margin: 0 0 10px;
}
.page ul { margin: 0 0 12px; padding-left: 1.2em; }
.page code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  padding: 1px 5px;
}
.page .levels-wrap { width: 100%; max-width: 100%; margin: 12px 0 18px; }
.page .levels {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin: 0;
}
.page .levels th, .page .levels td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.page .levels th {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  font-weight: 500;
}
.page .levels code { font-size: 11.5px; }
.page .cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }

/* ---------- responsive (after page styles so they win) ---------- */

@media (max-width: 720px) {
  .contrib-banner {
    position: static; /* free the sticky top band for the masthead */
    padding: 8px 14px;
    font-size: 12px;
    text-align: left;
  }
  .contrib-banner .go {
    display: block;
    margin: 4px 0 0;
    white-space: normal;
  }

  .masthead {
    top: 0;
    flex-wrap: wrap;
    padding: 10px 14px;
    padding-top: calc(10px + var(--safe-top));
    gap: 8px 12px;
    align-items: center;
  }
  .masthead .wordmark span.dim { display: none; }
  .masthead .spacer { display: none; }
  .masthead-tools {
    flex: 1 1 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .masthead .scenario {
    min-width: 0;
    max-width: none;
    width: 100%;
    font-size: 16px; /* avoid iOS focus zoom */
    padding: 8px 10px;
  }
  .masthead-actions {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 1px;
  }
  .masthead-actions::-webkit-scrollbar { display: none; }
  .masthead-actions .btn {
    flex-shrink: 0;
    min-height: 36px;
    padding: 6px 10px;
  }

  /* Tabs scroll with content on small screens — sticky masthead already uses the top band */
  .tabs {
    position: static;
    top: auto;
    padding: 0 10px;
  }
  .tab {
    padding: 12px 11px;
    font-size: 12.5px;
    min-height: 44px;
  }

  .main { padding: 16px 14px calc(108px + var(--safe-bottom)); }

  .field {
    grid-template-columns: 1fr;
    gap: 4px;
    align-items: stretch;
    padding: 10px 0;
  }
  .field input,
  .field select {
    text-align: left;
    font-size: 16px; /* avoid iOS focus zoom */
    padding: 8px 10px;
  }
  .field.check { grid-template-columns: 1fr auto; align-items: center; }
  .wizard-fields .field { grid-template-columns: 1fr; }
  .wizard-scenario-grid { grid-template-columns: 1fr; }
  .wizard-scenario-card { min-height: 0; }

  .panel > header {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .panel > header select {
    max-width: none;
    width: 100%;
    font-size: 16px;
    text-align: left;
  }

  .readouts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .readout { padding: 10px 12px; }
  .readout .v { font-size: 18px; }

  .domain-note { grid-column: 1 / -1; }

  .kv { gap: 6px 10px; font-size: 12px; }
  .kv dd { overflow-wrap: anywhere; }

  .verdict {
    gap: 14px;
    padding: 8px 14px;
    padding-bottom: calc(8px + var(--safe-bottom));
    padding-left: calc(14px + var(--safe-left));
    padding-right: calc(14px + var(--safe-right));
  }
  .verdict .v { font-size: 14px; }
  .verdict .btn.primary { min-height: 36px; }

  .foot { padding: 22px 14px 28px; }
  .foot-in { grid-template-columns: 1fr; }

  .btn { min-height: 36px; }
  .btn.sm { min-height: 32px; }

  .wizard-overlay {
    padding: 0;
    align-items: stretch;
  }
  .wizard {
    width: 100%;
    height: 100%;
    max-height: 100vh;
    max-height: 100dvh;
    border-radius: 0;
    border: 0;
  }
  .wizard-step-label { display: none; }
  .wizard-step { justify-content: center; padding: 12px 6px; }
  .wizard-body { padding: 18px 16px 8px; }
  .wizard-body h2 { font-size: 18px; }
  .wizard-actions {
    padding: 12px 16px calc(12px + var(--safe-bottom));
  }
  .wizard-actions .spacer { flex-basis: 100%; height: 0; margin: 0; min-width: 0; display: none; }
  .wizard-select { grid-template-columns: 1fr !important; }
  .wizard-select select {
    margin-top: 4px;
    font-size: 16px;
    text-align: left;
  }

  .page { padding: 24px 14px 60px; }
  .page h1 { font-size: 24px; }
  .page .lede { font-size: 15px; }
  .page .levels-wrap {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
  }
  .page .levels { width: max-content; min-width: 100%; }
}

@media (max-width: 400px) {
  .readouts { grid-template-columns: 1fr; }
  .wizard-actions .btn { flex: 1 1 calc(50% - 4px); }
  .wizard-actions .btn.primary { flex: 1 1 100%; }
}

@media print {
  .contrib-banner, .masthead, .tabs, .verdict, .foot, .wizard-overlay { display: none; }
  .panel { break-inside: avoid; box-shadow: none; }
}