/*
 * THE NO BULLSHIT AI COURSE
 * A practical field guide layered over the shared course mechanics.
 * It keeps its own personality while using Fazore's learning-system palette.
 */

:root {
  --nb-ink: var(--fz-ink);
  --nb-paper: var(--fz-paper);
  --nb-paper-2: var(--fz-paper-soft);
  --nb-orange: var(--fz-blue-deep);
  --nb-yellow: var(--fz-powder);
  --nb-blue: var(--fz-blue);
  --nb-mint: var(--fz-enable);
  --nb-red: var(--fz-error);
  --ink: var(--fz-ink);
  --ink-deep: var(--fz-ink-deep);
  --ink-2: var(--fz-ink-secondary);
  --muted: var(--fz-ink-muted);
  --faint: var(--fz-ink-muted);
  --paper: var(--fz-paper);
  --paper-soft: var(--fz-paper-soft);
  --powder: var(--fz-powder);
  --card: var(--fz-white);
  --accent: var(--fz-blue-deep);
  --blue-hi: var(--fz-blue-high);
  --line: var(--fz-line);
  --line-soft: var(--fz-line-soft);
  --ok: var(--fz-success);
  --warn: var(--fz-warning);
  --err: var(--fz-error);
  --display: var(--fz-font-editorial);
  --body: var(--fz-font-body);
  --mono: var(--fz-font-mono);
  --shell: min(1220px, calc(100% - 48px));
  --shadow: var(--fz-shadow-print);
}

html { background: var(--fz-ink-deep); }

body {
  background: var(--fz-paper);
  color: var(--fz-ink);
}

::selection { background: var(--fz-powder); color: var(--fz-ink-deep); }
:focus-visible { outline: 3px solid var(--fz-blue-high); outline-offset: 3px; }

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -.04em;
}

h1 em, h2 em {
  color: var(--fz-blue-deep);
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -.035em;
}

.label, .eyebrow {
  color: var(--nb-orange);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .13em;
}

.skip-link {
  border: 1px solid var(--fz-blue-deep);
  background: var(--fz-white);
  box-shadow: var(--fz-shadow-print);
}

/* Header: compact utility bar, because nobody enrolled to admire navigation. */
.site-header {
  background: var(--nb-ink);
  border-bottom: 3px solid var(--nb-orange);
}

.header-inner { min-height: 66px; }

.wordmark { letter-spacing: .08em; }
.wordmark small, .footer-brand small { color: var(--nb-yellow); }

.wordmark-mark {
  border: 2px solid #fff;
  border-radius: 0;
  background: var(--nb-orange);
  box-shadow: 3px 3px 0 var(--nb-blue);
  font-family: var(--display);
  font-weight: 800;
  transform: rotate(-3deg);
}

.header-course { color: var(--nb-yellow); }

.language-switch button {
  border: 2px solid transparent;
  color: rgba(255,255,255,.72);
}

.language-switch button:hover { color: var(--nb-yellow); }
.language-switch button.active {
  border-color: var(--nb-yellow);
  background: var(--nb-yellow);
  color: var(--nb-ink);
}
.language-switch button.active::after { display: none; }

/* Hero: field guide meets diner menu meets an intervention from a close friend. */
.hero-outer {
  position: relative;
  overflow: hidden;
  padding: 42px 0 58px;
  background:
    linear-gradient(135deg, transparent 0 48%, rgba(255,230,90,.08) 48% 52%, transparent 52% 100%),
    var(--nb-ink);
  background-size: 34px 34px;
}

.hero-tape {
  position: absolute;
  top: 16px;
  left: 50%;
  width: 150vw;
  transform: translateX(-50%) rotate(-1deg);
  color: rgba(255,255,255,.16);
  font: 700 10px var(--mono);
  letter-spacing: .2em;
  text-align: center;
  white-space: nowrap;
}

.hero-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0,1.08fr) minmax(360px,.82fr);
  grid-template-areas:
    "intro art"
    "decision art"
    "support art";
  overflow: visible;
  border: 3px solid var(--nb-ink);
  background: var(--nb-paper-2);
  box-shadow: 12px 12px 0 var(--nb-orange), 20px 20px 0 var(--nb-blue);
}

.hero-copy {
  grid-area: intro;
  max-width: none;
  padding: clamp(34px,4vw,58px);
  border-bottom: 3px solid var(--nb-ink);
  background: var(--nb-paper-2);
}

.hero-copy .eyebrow {
  display: inline-block;
  margin-bottom: 22px;
  padding: 7px 10px;
  background: var(--nb-blue);
  color: #fff;
  transform: rotate(-1deg);
}

h1 {
  max-width: 14ch;
  margin: 0 0 24px;
  font-size: clamp(46px,5.45vw,76px);
  line-height: .9;
  text-transform: uppercase;
}

h1 em {
  display: inline-block;
  font-size: 1.03em;
  line-height: .92;
  text-transform: none;
  transform: rotate(-1deg);
}

.intro {
  max-width: 63ch;
  color: var(--ink-2);
  font-size: clamp(16px,1.35vw,19px);
  line-height: 1.62;
}

.hero-art {
  grid-area: art;
  min-width: 0;
  margin: 0;
  display: grid;
  grid-template-rows: minmax(0,1fr) auto;
  border-left: 3px solid var(--nb-ink);
  background: var(--nb-orange);
}

.hero-art img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  display: block;
  object-fit: cover;
  object-position: 50% 50%;
  filter: saturate(1.08) contrast(1.04);
}

.hero-art figcaption {
  padding: 15px 17px;
  border-top: 3px solid var(--nb-ink);
  background: var(--nb-yellow);
  color: var(--nb-ink);
  font: 700 11px/1.5 var(--mono);
}

.hero-decision-block {
  grid-area: decision;
  padding: clamp(26px,3.1vw,42px);
  background: var(--nb-yellow);
}

.opening-artifact { margin: 0; }
.opening-artifact .hero-board-card {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 12px;
  padding: 16px;
  border: 3px solid var(--nb-ink);
  background: #fff;
  box-shadow: 7px 7px 0 var(--nb-ink);
}

.opening-artifact .hero-board-card > .label { grid-column: 1 / -1; }
.opening-artifact .evidence-card {
  margin: 0;
  padding: 14px;
  border: 2px solid var(--nb-ink);
  background: var(--nb-paper-2);
  box-shadow: none;
}
.opening-artifact .evidence-card.source {
  border-color: var(--nb-ink);
  background: #fff3ef;
  box-shadow: inset 7px 0 0 var(--nb-orange);
}
.evidence-card > span { color: var(--nb-blue); }
.evidence-card p {
  margin: 10px 0;
  color: var(--ink-2);
  font-family: var(--body);
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.55;
}
.evidence-card small { color: var(--muted); }

.opening-decision { margin-top: 28px; }
.opening-decision h2 {
  margin-bottom: 15px;
  font-family: var(--display);
  font-size: clamp(22px,2vw,29px);
  font-weight: 800;
  letter-spacing: -.04em;
}
.opening-choices { gap: 8px; }
.opening-choices .choice-button {
  min-height: 54px;
  border: 2px solid var(--nb-ink);
  background: #fff;
  box-shadow: 4px 4px 0 var(--nb-ink);
}
.opening-choices .choice-button:hover { transform: translate(-2px,-2px); box-shadow: 6px 6px 0 var(--nb-ink); }
.opening-choices .choice-button[aria-pressed="true"] { background: var(--nb-blue); color: #fff; }

.opening-promise {
  border: 2px solid var(--nb-ink);
  border-left: 9px solid var(--nb-orange);
  background: #fff;
}

.start-btn, .solid-btn {
  min-height: 50px;
  border: 2px solid var(--nb-ink);
  background: var(--nb-orange);
  color: var(--nb-ink);
  box-shadow: 5px 5px 0 var(--nb-ink);
  font-weight: 800;
  text-transform: uppercase;
}
.start-btn:hover, .solid-btn:hover { background: var(--nb-blue); color: #fff; transform: translate(-1px,-1px); }
.start-btn:disabled, .solid-btn:disabled { box-shadow: none; }

.hero-support {
  grid-area: support;
  padding: 17px clamp(26px,3.1vw,42px);
  border: 0;
  border-top: 3px solid var(--nb-ink);
  background: var(--nb-ink);
}
.hero-support .hero-reassurance {
  padding: 0;
  border: 0;
  background: transparent;
  color: #fff;
  font: 700 11px/1.6 var(--mono);
}
.hero-support .hero-reassurance::before { content: "↳ "; color: var(--nb-yellow); }

.resume-strip {
  border: 2px solid var(--nb-ink);
  background: var(--nb-yellow);
  box-shadow: 4px 4px 0 var(--nb-ink);
}
.resume-strip button { border: 2px solid var(--nb-ink); background: #fff; font-weight: 800; }

/* Four-act map: the learner can see the route before we confiscate 90 minutes. */
.course-orientation {
  margin-top: 42px;
  padding: clamp(26px,3.2vw,42px);
  border: 3px solid var(--nb-ink);
  background: var(--nb-ink);
  box-shadow: 10px 10px 0 var(--nb-orange);
  color: #fff;
}

.course-orientation-copy {
  grid-template-columns: minmax(170px,.34fr) 1fr;
  gap: 8px 34px;
}
.course-orientation .label { color: var(--nb-yellow); }
.course-orientation h2 {
  max-width: 17ch;
  color: #fff;
  font-size: clamp(34px,4vw,54px);
  text-transform: uppercase;
}
.course-orientation-copy > p { max-width: 61ch; color: rgba(255,255,255,.74); }

.module-cards {
  grid-template-columns: repeat(4,minmax(0,1fr));
  gap: 13px;
  margin-top: 30px;
}
.module-card {
  min-height: 192px;
  display: block;
  padding: 18px;
  border: 2px solid #fff;
  background: var(--nb-paper-2);
  color: var(--nb-ink);
  box-shadow: 5px 5px 0 rgba(255,255,255,.3);
}
.module-card:nth-child(2) { background: var(--nb-yellow); transform: rotate(1deg); }
.module-card:nth-child(3) { background: var(--nb-orange); transform: rotate(-1deg); }
.module-card:nth-child(4) { background: var(--nb-blue); color: #fff; }
.module-number {
  display: inline-block;
  margin-bottom: 23px;
  padding: 5px 7px;
  background: var(--nb-ink);
  color: var(--nb-yellow);
}
.module-card:nth-child(4) .module-number { background: var(--nb-yellow); color: var(--nb-ink); }
.module-card strong { font-size: 17px; line-height: 1.1; }
.module-card p { color: inherit; font-size: 12.5px; }
.module-card small { color: inherit; opacity: .75; }

.storage-note {
  margin-top: 28px;
  padding: 11px 14px;
  border-left: 6px solid var(--nb-blue);
  background: rgba(255,255,255,.58);
  color: var(--ink-2);
  font: 400 11px/1.55 var(--mono);
}

/* Course frame */
.course {
  grid-template-columns: 250px minmax(0,1fr);
  gap: clamp(26px,4vw,54px);
  padding: 40px 0 94px;
}

.contents {
  top: 86px;
  padding: 19px;
  border: 3px solid var(--nb-ink);
  background: var(--nb-ink);
  box-shadow: 7px 7px 0 var(--nb-blue);
  color: #fff;
}
.contents > .label {
  padding-bottom: 13px;
  border-color: rgba(255,255,255,.34);
  color: var(--nb-yellow);
}
.module-tab-heading {
  border-color: rgba(255,255,255,.42);
  color: #fff;
}
.module-tab-heading > span, .module-tab-heading small { color: var(--nb-yellow); }

.lesson-tab {
  padding: 12px 7px;
  border-color: rgba(255,255,255,.18);
  color: rgba(255,255,255,.62);
}
.lesson-tab:not(:disabled):hover { color: var(--nb-yellow); }
.lesson-tab.active {
  margin: 4px 0;
  padding-inline: 10px;
  background: var(--nb-yellow);
  color: var(--nb-ink);
  box-shadow: 4px 4px 0 var(--nb-orange);
}
.lesson-tab.active::before { display: none; }
.lesson-tab.active .tab-n { color: var(--nb-red); }
.tab-n, .lesson-time { color: inherit; opacity: .72; }
.tab-state { color: var(--nb-mint); }
.lesson-tab.active .tab-state { color: var(--nb-ink); }
.lesson-tab.locked .tab-state::before { color: inherit; }

.rail-score {
  border: 2px solid #fff;
  background: var(--nb-blue);
  color: #fff;
}
.rail-score .label, .score-hint { color: rgba(255,255,255,.75); }
.rail-ready { color: var(--nb-yellow); font-family: var(--display); font-weight: 800; }

.lesson-stage {
  min-width: 0;
  padding: clamp(24px,3.4vw,48px);
  border: 3px solid var(--nb-ink);
  background: rgba(255,250,240,.96);
  box-shadow: 10px 10px 0 var(--nb-orange);
}

.folio { color: var(--nb-red); }
.folio .line { height: 3px; background: var(--nb-ink); }
.folio .time { color: var(--muted); }
.lesson-panel h2 {
  max-width: 19ch;
  margin-bottom: 24px;
  font-size: clamp(38px,4.4vw,62px);
  line-height: .95;
  text-transform: uppercase;
}
.lesson-panel h3 { font-weight: 800; }
.lesson-copy { color: var(--ink-2); }
.key-term { color: var(--nb-red); font-weight: 800; }

.conversation-flow { min-width: 0; }
.conversation-turn {
  margin: 0 0 18px;
  padding: 20px 22px;
  border: 2px solid var(--nb-ink);
  border-left: 9px solid var(--nb-orange);
  background: #fff;
  box-shadow: 5px 5px 0 rgba(17,16,14,.16);
}
.conversation-turn.simulated { border-left-color: var(--nb-blue); }
.conversation-turn .turn-label { color: var(--nb-red); }
.conversation-turn.simulated .turn-label { color: var(--nb-blue); }
.conversation-turn p { color: var(--ink-2); font-size: 15.5px; line-height: 1.7; }

.says {
  max-width: 62ch;
  margin: 11px 0;
  padding: 13px 15px;
  border: 2px solid var(--nb-ink);
  background: var(--nb-ink);
  color: #fff;
  font: 400 12.5px/1.65 var(--mono);
  overflow-wrap: anywhere;
}
.says::before { content: none; }
.says strong, .says .key-term { color: #fff; }
.says-reply { background: #fff; color: var(--ink-2); box-shadow: inset 7px 0 0 var(--nb-blue); }
.says-reply::before { content: none; }
.says-reply strong, .says-reply .key-term { color: var(--nb-ink); }

.rule-line {
  margin: 24px 0;
  padding: 22px;
  border: 3px solid var(--nb-ink);
  background: var(--nb-yellow);
  box-shadow: 7px 7px 0 var(--nb-ink);
}
.rule-line .label { color: var(--nb-red); }
.rule-line p { font-family: var(--display); font-size: clamp(22px,2.3vw,29px); font-weight: 800; }
.rule-line .rule-sub { color: var(--ink-2); font: 400 12px/1.65 var(--mono); }

.pause-card {
  padding: 20px;
  border: 3px solid var(--nb-ink);
  border-left: 11px solid var(--nb-blue);
  background: #fff;
}
.pause-card .label { color: var(--nb-blue); }
.pause-card strong { font-family: var(--display); font-weight: 800; }

.module-complete {
  border: 3px solid var(--nb-ink);
  background: var(--nb-orange);
  box-shadow: 7px 7px 0 var(--nb-ink);
}
.module-complete .label { color: var(--nb-ink); }
.module-complete h3 { font-weight: 800; }
.module-complete p { color: var(--nb-ink); }

.learning-notes { max-width: none; }
.learning-note {
  padding: 19px 21px;
  border: 2px solid var(--nb-ink);
  border-left: 9px solid var(--nb-blue);
  background: #eef1ff;
}
.learning-note h3 { font-weight: 800; }

.reference-rail {
  padding: 18px;
  border: 2px solid var(--nb-ink);
  background: var(--nb-yellow);
  box-shadow: 5px 5px 0 var(--nb-ink);
}
.reference-rail > .label { color: var(--nb-red); }
.reading-list li { border-color: rgba(17,16,14,.24); }
.reading-list a { text-decoration-thickness: 2px; }
.reading-list span { color: var(--ink-2); }

/* Visual beats */
.chapter-visual {
  position: relative;
  margin: 22px 0 25px;
  border: 3px solid var(--nb-ink);
  background: var(--nb-ink);
  box-shadow: 9px 9px 0 var(--nb-blue);
}
.visual-receipt {
  position: absolute;
  top: 12px;
  left: -8px;
  z-index: 1;
  padding: 6px 9px;
  background: var(--nb-yellow);
  border: 2px solid var(--nb-ink);
  color: var(--nb-ink);
  font: 700 9px var(--mono);
  letter-spacing: .1em;
  transform: rotate(-2deg);
}
.chapter-visual img { width: 100%; height: auto; display: block; }
.chapter-visual figcaption {
  padding: 13px 15px;
  border-top: 3px solid var(--nb-ink);
  background: var(--nb-orange);
  color: var(--nb-ink);
  font: 700 11px/1.55 var(--mono);
}

.video-placeholder.motion-note {
  display: block;
  margin: 22px 0;
  padding: 0;
  border: 3px solid var(--nb-ink);
  background: #fff;
  box-shadow: 8px 8px 0 var(--nb-orange);
}
.motion-head {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 16px 18px;
  border-bottom: 3px solid var(--nb-ink);
  background: var(--nb-ink);
  color: #fff;
}
.video-icon {
  width: 38px;
  height: 38px;
  border: 2px solid #fff;
  border-radius: 0;
  background: var(--nb-blue);
}
.motion-head .video-copy { min-width: 0; }
.motion-head .video-copy > strong { color: var(--nb-yellow); }
.motion-head .video-copy > span { color: #fff; }
.frozen-note { display: block; margin-top: 3px; color: rgba(255,255,255,.6); }
.motion-frames { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); }
.motion-frame {
  min-height: 176px;
  padding: 18px;
  border-right: 2px solid var(--nb-ink);
  background: var(--nb-paper-2);
}
.motion-frame:nth-child(2) { background: var(--nb-yellow); }
.motion-frame:nth-child(3) { border-right: 0; background: #eef1ff; }
.motion-frame > span { color: var(--nb-red); font: 700 9px var(--mono); letter-spacing: .1em; }
.motion-frame strong { display: block; margin-top: 18px; font-size: 18px; line-height: 1.05; }
.motion-frame p { margin: 8px 0 0; color: var(--ink-2); font-size: 12.5px; line-height: 1.52; }
.video-transcript { margin: 0; padding: 0 18px 15px; border-top: 2px solid var(--nb-ink); }
.video-transcript summary { padding-top: 13px; color: var(--nb-blue); }

/* Provider tasting flight */
.provider-flight, .model-decoder, .surface-deck, .terminal-lab, .resource-deck {
  margin: 24px 0;
  padding: clamp(19px,2.6vw,28px);
  border: 3px solid var(--nb-ink);
  background: #fff;
  box-shadow: 8px 8px 0 var(--nb-ink);
}
.provider-flight > header, .model-decoder > header, .surface-deck > header,
.terminal-lab > header, .resource-deck > header { margin-bottom: 20px; }
.provider-flight > header h3, .model-decoder > header h3, .surface-deck > header h3,
.terminal-lab > header h3, .resource-deck > header h3 {
  margin: 5px 0 8px;
  font-size: clamp(28px,3vw,39px);
  line-height: .98;
  text-transform: uppercase;
}
.provider-flight > header p, .model-decoder > header p, .surface-deck > header p,
.terminal-lab > header p, .resource-deck > header p {
  max-width: 67ch;
  margin: 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.6;
}
.provider-flight > header small { display: block; margin-top: 8px; color: var(--muted); font: 400 10px var(--mono); }

.provider-grid { display: grid; gap: 10px; }
.provider-card { border: 2px solid var(--nb-ink); background: var(--nb-paper-2); }
.provider-card[open] { box-shadow: 5px 5px 0 var(--nb-orange); }
.provider-card summary {
  display: grid;
  grid-template-columns: 42px minmax(120px,.55fr) minmax(180px,1fr);
  gap: 12px;
  align-items: center;
  padding: 14px;
  cursor: pointer;
  list-style: none;
}
.provider-card summary::-webkit-details-marker { display: none; }
.provider-card summary::after {
  content: "";
  width: 15px;
  height: 15px;
  background:
    linear-gradient(currentColor,currentColor) 50% 0 / 2px 100% no-repeat,
    linear-gradient(currentColor,currentColor) 0 50% / 100% 2px no-repeat;
}
.provider-card[open] summary::after { background: linear-gradient(currentColor,currentColor) 0 50% / 100% 2px no-repeat; }
.provider-index { color: var(--nb-red); font: 700 10px var(--mono); }
.provider-card summary strong { display: block; font-size: 16px; }
.provider-card summary small { display: block; color: var(--muted); font: 400 9px var(--mono); }
.provider-card summary em { color: var(--ink-2); font-family: "Newsreader", Georgia, serif; font-size: 16px; line-height: 1.25; }
.provider-body { padding: 18px; border-top: 2px solid var(--nb-ink); background: #fff; }
.provider-body > p { margin: 0 0 13px; color: var(--ink-2); font-size: 14px; }
.model-chips { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 7px; }
.model-chips span { padding: 9px 10px; border: 1px solid var(--nb-ink); background: var(--nb-yellow); font-size: 11px; line-height: 1.4; }
.model-chips b { display: block; font: 700 10px var(--mono); }
.provider-body dl { margin: 14px 0; }
.provider-body dl > div { display: grid; grid-template-columns: 105px 1fr; gap: 10px; padding: 8px 0; border-top: 1px solid var(--line); }
.provider-body dt { color: var(--nb-red); font: 700 9px var(--mono); text-transform: uppercase; }
.provider-body dd { margin: 0; color: var(--ink-2); font-size: 12.5px; }
.provider-body > a { color: var(--nb-blue); font-weight: 800; text-underline-offset: 4px; }

/* Model decoder */
.model-decoder { background: var(--nb-yellow); }
.tier-rule { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); border: 2px solid var(--nb-ink); }
.tier-rule article { min-height: 150px; padding: 17px; border-right: 2px solid var(--nb-ink); background: #fff; }
.tier-rule article:nth-child(2) { background: #fff3ef; }
.tier-rule article:last-child { border-right: 0; background: #eef1ff; }
.tier-rule article > span { color: var(--nb-red); font: 700 9px var(--mono); }
.tier-rule strong { display: block; margin-top: 16px; font-size: 17px; }
.tier-rule p { margin: 5px 0 0; color: var(--ink-2); font-size: 12px; line-height: 1.5; }
.model-rows { display: grid; gap: 8px; margin-top: 15px; }
.model-rows > article { display: grid; grid-template-columns: 145px 1fr; border: 2px solid var(--nb-ink); background: #fff; }
.model-rows > article > header { padding: 13px; border-right: 2px solid var(--nb-ink); background: var(--nb-ink); color: #fff; }
.model-rows > article > header strong { display: block; }
.model-rows > article > header span { color: var(--nb-yellow); font: 400 9px var(--mono); }
.model-rows ul { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); margin: 0; padding: 0; list-style: none; }
.model-rows li { padding: 12px; border-right: 1px solid var(--line); }
.model-rows li:last-child { border-right: 0; }
.model-rows li b { display: block; font-size: 12px; }
.model-rows li span { display: block; margin-top: 3px; color: var(--muted); font-size: 10.5px; line-height: 1.4; }
.snapshot-note { margin: 13px 0 0; color: var(--ink-2); font: 700 10px/1.55 var(--mono); }

/* App, browser and terminal surface cards */
.surface-deck { background: var(--nb-blue); color: #fff; }
.surface-deck .label { color: var(--nb-yellow); }
.surface-deck > header p { color: rgba(255,255,255,.78); }
.surface-cards { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 10px; }
.surface-card { padding: 17px; border: 2px solid #fff; background: var(--nb-paper-2); color: var(--nb-ink); box-shadow: 4px 4px 0 rgba(255,255,255,.35); }
.surface-card:nth-child(2) { background: var(--nb-yellow); }
.surface-card > span { color: var(--nb-red); font: 700 9px var(--mono); }
.surface-card h4 { margin: 18px 0 7px; font-size: 20px; }
.surface-card p { color: var(--ink-2); font-size: 12.5px; line-height: 1.5; }
.surface-card ul { padding-left: 17px; color: var(--ink-2); font-size: 11.5px; }
.surface-card small { display: block; padding-top: 10px; border-top: 1px solid var(--nb-ink); color: var(--ink-2); font: 400 9.5px/1.45 var(--mono); }

/* Terminal lab: explicit commands, explicit seatbelts. */
.terminal-lab { background: var(--nb-ink); color: #fff; box-shadow: 9px 9px 0 var(--nb-blue); }
.terminal-lab .label { color: var(--nb-yellow); }
.terminal-lab > header p { color: rgba(255,255,255,.76); }
.terminal-prereq {
  margin-bottom: 14px;
  padding: 15px;
  border: 2px solid var(--nb-ink);
  background: var(--nb-yellow);
  color: var(--nb-ink);
}
.terminal-prereq strong { display: block; }
.terminal-prereq p { margin: 5px 0; font-size: 12.5px; }
.terminal-prereq a { color: var(--nb-blue); font-weight: 800; }
.terminal-tools { display: grid; gap: 9px; }
.terminal-tool { border: 2px solid #fff; background: #1d1c19; }
.terminal-tool[open] { border-color: var(--nb-yellow); }
.terminal-tool summary {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}
.terminal-tool summary::-webkit-details-marker { display: none; }
.terminal-tool summary > span { color: var(--nb-yellow); font-weight: 800; }
.terminal-tool summary > small { color: rgba(255,255,255,.64); }
.terminal-tool-body { padding: 16px; border-top: 2px solid #fff; }
.terminal-command {
  display: grid;
  grid-template-columns: 105px minmax(0,1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border-bottom: 1px solid rgba(255,255,255,.25);
}
.terminal-command > span { color: var(--nb-yellow); font: 700 9px var(--mono); text-transform: uppercase; }
.terminal-command code { min-width: 0; color: #fff; font: 400 11px/1.5 var(--mono); overflow-wrap: anywhere; }
.terminal-command button {
  min-height: 40px;
  padding: 8px 11px;
  border: 2px solid var(--nb-yellow);
  background: transparent;
  color: var(--nb-yellow);
  font: 700 9px var(--mono);
  text-transform: uppercase;
}
.terminal-command button:hover { background: var(--nb-yellow); color: var(--nb-ink); }
.terminal-tool-body ol { padding-left: 22px; color: rgba(255,255,255,.83); font-size: 12.5px; line-height: 1.65; }
.terminal-tool-body code { color: var(--nb-yellow); font-family: var(--mono); }
.terminal-tool-body > p { color: rgba(255,255,255,.68); font-size: 12px; }
.terminal-tool-body > a { color: var(--nb-yellow); font-weight: 800; }
.terminal-seatbelt {
  margin-top: 16px;
  padding: 17px;
  border: 3px solid var(--nb-ink);
  background: var(--nb-orange);
  color: var(--nb-ink);
}
.terminal-seatbelt strong { font-size: 17px; }
.terminal-seatbelt ul { margin-bottom: 0; padding-left: 19px; font-size: 12.5px; }

/* Resource cards */
.resource-deck { background: #eef1ff; box-shadow: 8px 8px 0 var(--nb-blue); }
.resource-deck > div { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 9px; }
.resource-deck > div > a {
  display: grid;
  min-height: 116px;
  padding: 14px;
  border: 2px solid var(--nb-ink);
  background: #fff;
  color: var(--nb-ink);
  text-decoration: none;
  box-shadow: 4px 4px 0 var(--nb-ink);
}
.resource-deck > div > a:hover { background: var(--nb-yellow); transform: translate(-1px,-1px); }
.resource-deck a strong { font-size: 15px; }
.resource-deck a span { color: var(--ink-2); font-size: 12px; line-height: 1.5; }
.resource-deck a small { align-self: end; color: var(--nb-red); font: 700 9px var(--mono); }

/* Exercises: no fake confetti. The satisfying part is seeing the idea click. */
.desk {
  margin: 24px 0;
  padding: clamp(18px,2.6vw,28px);
  border: 3px solid var(--nb-ink);
  background: #fff;
  box-shadow: 9px 9px 0 var(--nb-orange);
}
.desk-head { padding-bottom: 11px; border-bottom: 2px solid var(--nb-ink); }
.desk-head .label { color: var(--nb-red); }
.exercise-number { color: var(--ink-2); }
.conversation-question { margin: 17px 0 12px; font-family: var(--display); font-size: clamp(22px,2vw,28px); font-weight: 800; }
.hints p { color: var(--ink-2); font-size: 13.5px; }

.choice-grid { gap: 10px; }
.choice-grid.three { grid-template-columns: 1fr; }
.choice-button {
  min-height: 64px;
  padding: 13px 14px;
  border: 2px solid var(--nb-ink);
  background: var(--nb-paper-2);
  color: var(--nb-ink);
  font-size: 14px;
  font-weight: 800;
  box-shadow: 3px 3px 0 rgba(17,16,14,.26);
}
.choice-button span { color: var(--ink-2); font-size: 12.5px; }
.choice-button:hover { border-color: var(--nb-ink); background: var(--nb-yellow); transform: translateY(-1px); }
.choice-button[aria-pressed="true"] { border-color: var(--nb-ink); background: var(--nb-blue); color: #fff; box-shadow: 4px 4px 0 var(--nb-ink); }
.choice-button[aria-pressed="true"] span { color: rgba(255,255,255,.82); }

.exercise-feedback {
  margin-top: 15px;
  padding: 16px;
  border: 2px solid var(--nb-ink);
  border-left: 10px solid var(--nb-orange);
  background: var(--nb-yellow);
}
.exercise-feedback strong { font-size: 16px; }
.exercise-feedback p { color: var(--ink-2); font-size: 14px; }
.exercise-feedback .feedback-detail { border-color: rgba(17,16,14,.24); }

.sample-pair { gap: 10px; }
.sample-card { border: 2px solid var(--nb-ink); background: var(--nb-paper-2); }
.sample-card:nth-child(2) { background: #eef1ff; }

.quick-cases { gap: 12px; }
.quick-case { padding: 16px; border: 2px solid var(--nb-ink); background: var(--nb-paper-2); }
.quick-case.done { background: #eefaf5; box-shadow: inset 7px 0 0 var(--nb-mint); }
.quick-case .choice-grid { grid-template-columns: 1fr; gap: 7px; }
.quick-case .choice-button { min-height: 48px; text-align: left; }
.case-reveal { border-color: var(--nb-ink); font-size: 13.5px; }

.token-prompt {
  border: 3px solid var(--nb-ink);
  background: var(--nb-ink);
  box-shadow: 5px 5px 0 var(--nb-blue);
}
.token-prompt .token-slot { color: var(--nb-yellow); }
.token-choice {
  grid-template-columns: minmax(100px,.65fr) minmax(140px,1.5fr) 50px auto;
  gap: 10px;
  padding: 12px 14px;
  border: 2px solid var(--nb-ink);
  background: #fff;
}
.token-choices:not(.is-revealed) .token-choice { grid-template-columns: 1fr; }
.token-choice[aria-pressed="true"] { border-color: var(--nb-ink); background: var(--nb-blue); color: #fff; box-shadow: 4px 4px 0 var(--nb-ink); }
.token-bar { height: 11px; border: 0; background: var(--line-soft); appearance: none; }
.token-bar::-webkit-progress-bar { background: var(--line-soft); }
.token-bar::-webkit-progress-value { background: var(--nb-orange); }
.token-bar::-moz-progress-bar { background: var(--nb-orange); }
.token-choice[aria-pressed="true"] .token-bar { background: rgba(255,255,255,.28); }
.token-choice[aria-pressed="true"] .token-bar::-webkit-progress-bar { background: rgba(255,255,255,.28); }
.token-choice[aria-pressed="true"] .token-bar::-webkit-progress-value { background: var(--nb-yellow); }
.token-choice[aria-pressed="true"] .token-bar::-moz-progress-bar { background: var(--nb-yellow); }
.token-likelihood { color: var(--ink-2); text-align: right; }
.token-choice[aria-pressed="true"] .token-likelihood { color: #fff; }
.token-model-pick { padding: 4px 6px; background: var(--nb-yellow); color: var(--nb-ink); font: 700 9px var(--mono); text-transform: uppercase; }
.token-demo-note { color: var(--muted); font: 400 10px/1.55 var(--mono); }

.markable-copy { border: 2px solid var(--nb-ink); background: var(--nb-paper-2); font-size: 15px; }
.mark-token { border-bottom: 3px dotted var(--nb-blue); }
.mark-token:hover { background: var(--nb-yellow); }
.mark-token[aria-pressed="true"] { background: var(--nb-blue); color: #fff; border-bottom-color: var(--nb-ink); }
.markable-copy.reviewed .mark-token[data-signal="true"] { background: #dff6ee; border-bottom-color: var(--ok); }
.marker-result { display: inline-block; margin: 0 7px 4px 0; padding: 4px 6px; border: 1px solid currentColor; font: 700 8.5px var(--mono); text-transform: uppercase; }
.marker-result.needs-check { background: #fff0e9; color: var(--warn); }
.marker-result.context-only { background: #e4f8f0; color: var(--ok); }

.prompt-bank, .prompt-preview, .studio-fields, .studio-preview {
  border: 2px solid var(--nb-ink);
  background: var(--nb-paper-2);
}
.prompt-block {
  border: 2px solid var(--nb-ink);
  background: #fff;
  font-size: 13px;
}
.prompt-block:hover { background: var(--nb-yellow); }
.prompt-block[aria-pressed="true"] { border-color: var(--nb-ink); box-shadow: inset 7px 0 0 var(--nb-blue); }
.prompt-output, .scenario-artifact { border-color: var(--nb-ink); }
.scenario-artifact { padding: 14px 16px; border: 2px solid var(--nb-ink); border-left: 9px solid var(--nb-blue); background: #fff; }

.studio-layout { display: grid; grid-template-columns: 1fr; gap: 14px; margin-bottom: 14px; }
.studio-fields { display: grid; gap: 12px; padding: 16px; }
.studio-preview { padding: 16px; background: var(--nb-yellow); }
.studio-field label { display: block; color: var(--ink); font-size: 13px; font-weight: 800; }
.studio-field textarea { min-height: 84px; resize: vertical; }
.studio-field small { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; }
.studio-preview pre, .use-card-personal pre { white-space: pre-wrap; overflow-wrap: anywhere; font: 400 12.5px/1.65 var(--mono); }
.studio-preview p { color: var(--ink-2); font-size: 11px; }
.use-card-personal { padding: 15px; border: 2px solid var(--nb-yellow); background: var(--nb-ink); color: #fff; }
.use-card-personal h4, .use-card-personal pre { color: #fff; }
.use-card-personal p { color: rgba(255,255,255,.7); }

input[type="text"], select, textarea {
  border: 2px solid var(--nb-ink);
  background: #fff;
}
.ghost-btn, .control-btn {
  border: 2px solid var(--nb-ink);
  background: #fff;
  color: var(--nb-ink);
  box-shadow: 3px 3px 0 var(--nb-ink);
  font-weight: 800;
}
.ghost-btn:hover, .control-btn:hover:not(:disabled) { background: var(--nb-yellow); color: var(--nb-ink); }
.controls { border-top: 3px solid var(--nb-ink); }
.control-btn.next { background: var(--nb-orange); }
.control-btn:disabled { box-shadow: none; }

/* Finish artifacts */
.finish-block {
  padding: clamp(20px,2.7vw,30px);
  border: 3px solid var(--nb-ink);
  background: #fff;
  box-shadow: 7px 7px 0 rgba(17,16,14,.18);
}
.finish-block:nth-of-type(2) { background: var(--nb-yellow); }
.finish-block > .label { color: var(--nb-red); }
.use-card, .certificate {
  border: 3px solid var(--nb-ink);
  background: var(--nb-paper-2);
  box-shadow: 8px 8px 0 var(--nb-blue);
}
.use-card-brand { border-color: var(--nb-ink); color: var(--nb-red); }
.use-card-recipe { border: 2px solid var(--nb-ink); border-left: 9px solid var(--nb-blue); }
.use-card-contact { border: 2px solid var(--nb-ink); border-left: 9px solid var(--nb-orange); }
.cert-kicker { color: var(--nb-red); }
.certificate { position: relative; }
.cert-sticker { position: absolute; top: 20px; right: -10px; padding: 7px 10px; border: 2px solid var(--nb-ink); background: var(--nb-orange); font: 700 9px var(--mono); transform: rotate(3deg); }
.next-step { border-left: 12px solid var(--nb-orange); background: #eef1ff; }

.site-footer { border-top: 4px solid var(--nb-orange); background: var(--nb-ink); }
.footer-brand .wordmark-mark { display: inline-grid; }
.page-foot { color: rgba(255,255,255,.65); }
.toast { border: 3px solid var(--nb-yellow); background: var(--nb-ink); box-shadow: 6px 6px 0 var(--nb-orange); }

@media (max-width: 1100px) {
  .hero-panel {
    grid-template-columns: minmax(0,1fr) minmax(330px,.78fr);
  }
  .module-cards { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .module-card { min-height: 165px; }
  .model-rows ul { grid-template-columns: 1fr; }
  .model-rows li { border-right: 0; border-bottom: 1px solid var(--line); }
  .model-rows li:last-child { border-bottom: 0; }
}

@media (max-width: 1050px) {
  .hero-panel {
    grid-template-columns: 1fr;
    grid-template-areas:
      "intro"
      "art"
      "decision"
      "support";
  }
  .hero-art { border-left: 0; border-top: 3px solid var(--nb-ink); }
  .hero-art img { min-height: 0; aspect-ratio: 16 / 8.3; }
  h1 { max-width: 15ch; }
  .hero-support { border-top: 3px solid var(--nb-ink); }
}

@media (max-width: 900px) {
  .hero-outer { padding: 30px 0 42px; }
  .hero-copy { padding: 30px 25px; }
  .hero-decision-block { padding: 28px 25px; }
  .hero-panel { box-shadow: 8px 8px 0 var(--nb-orange), 14px 14px 0 var(--nb-blue); }
  .course { grid-template-columns: minmax(0,1fr); gap: 22px; }
  .contents {
    position: static;
    display: flex;
    gap: 4px;
    overflow-x: auto;
    padding: 8px;
    border: 3px solid var(--nb-ink);
    box-shadow: 5px 5px 0 var(--nb-blue);
    scrollbar-width: thin;
  }
  .contents > .label, .rail-score, .module-tab-heading { display: none; }
  .lesson-tab {
    min-width: 84px;
    min-height: 63px;
    flex: 0 0 84px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    padding: 8px 6px;
    border: 1px solid rgba(255,255,255,.24);
    text-align: center;
  }
  .lesson-tab.active { margin: 0; }
  .lesson-name, .lesson-time { display: none; }
  .tab-short { display: block; font-size: 9.5px; font-weight: 800; line-height: 1.15; }
  .tab-state { position: absolute; top: 5px; right: 6px; }
  .lesson-stage { padding: clamp(20px,4.5vw,36px); box-shadow: 7px 7px 0 var(--nb-orange); }
  .skill-cols.with-side { display: block; }
  .skill-side { position: static; margin-top: 28px; }
}

@media (max-width: 720px) {
  :root { --shell: calc(100% - 28px); }
  .header-course { display: none; }
  .hero-tape { display: none; }
  h1 { font-size: clamp(39px,11.7vw,56px); }
  .intro { font-size: 15px; }
  .opening-artifact .hero-board-card { grid-template-columns: 1fr; }
  .course-orientation { box-shadow: 7px 7px 0 var(--nb-orange); }
  .course-orientation-copy { grid-template-columns: 1fr; }
  .course-orientation-copy .label { grid-row: auto; }
  .module-cards { grid-template-columns: 1fr; }
  .module-card, .module-card:nth-child(2), .module-card:nth-child(3) { min-height: 0; transform: none; }
  .module-number { margin-bottom: 14px; }
  .lesson-panel h2 { font-size: clamp(34px,10vw,48px); }
  .motion-frames, .tier-rule, .surface-cards { grid-template-columns: 1fr; }
  .motion-frame, .tier-rule article { min-height: 0; border-right: 0; border-bottom: 2px solid var(--nb-ink); }
  .motion-frame:last-child, .tier-rule article:last-child { border-bottom: 0; }
  .provider-card summary { grid-template-columns: 35px minmax(0,1fr) auto; }
  .provider-card summary em { grid-column: 2 / -1; font-size: 15px; }
  .model-chips { grid-template-columns: 1fr; }
  .model-rows > article { grid-template-columns: 1fr; }
  .model-rows > article > header { border-right: 0; border-bottom: 2px solid var(--nb-ink); }
  .terminal-command { grid-template-columns: 1fr auto; }
  .terminal-command > span { grid-column: 1 / -1; }
  .resource-deck > div { grid-template-columns: 1fr; }
  .studio-layout { grid-template-columns: 1fr; }
  .token-choice { grid-template-columns: minmax(80px,.8fr) 1fr 42px; }
  .token-model-pick { grid-column: 2 / -1; justify-self: start; }
  .cert-sticker { position: static; display: inline-block; margin-bottom: 15px; }
}

@media (max-width: 480px) {
  :root { --shell: calc(100% - 22px); }
  .header-inner { min-height: 62px; }
  .wordmark { font-size: 12px; }
  .wordmark-mark { width: 28px; height: 28px; }
  .language-switch { gap: 3px; }
  .language-switch button { min-width: 39px; min-height: 39px; }
  .hero-outer { padding-top: 20px; }
  .hero-copy, .hero-decision-block { padding: 23px 19px; }
  .hero-support { padding: 16px 19px; }
  .hero-art figcaption { font-size: 10px; }
  .opening-artifact .hero-board-card { padding: 12px; box-shadow: 5px 5px 0 var(--nb-ink); }
  .course-orientation { padding: 21px; }
  .course-orientation h2 { font-size: 32px; }
  .lesson-stage { padding: 18px 14px; }
  .conversation-turn { padding: 17px 15px; }
  .desk { padding: 16px 13px; box-shadow: 6px 6px 0 var(--nb-orange); }
  .provider-flight, .model-decoder, .surface-deck, .terminal-lab, .resource-deck { padding: 16px 13px; box-shadow: 6px 6px 0 var(--nb-ink); }
  .terminal-lab { box-shadow: 6px 6px 0 var(--nb-blue); }
  .terminal-tool summary { display: block; }
  .terminal-tool summary small { display: block; margin-top: 4px; }
  .terminal-command { display: block; }
  .terminal-command code { display: block; margin: 8px 0 10px; }
  .terminal-command button { width: 100%; }
  .token-choice { grid-template-columns: 1fr; }
  .token-bar, .token-likelihood, .token-model-pick { grid-column: 1; }
  .token-likelihood { text-align: left; }
  .controls { flex-wrap: wrap; }
  .controls .lesson-counter { order: 3; width: 100%; text-align: center; }
  .control-btn { max-width: 48%; padding-inline: 10px; font-size: 11.5px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .module-card, h1 em, .hero-copy .eyebrow, .cert-sticker { transform: none !important; }
}

@media print {
  body { background: #fff !important; }
  .use-card, .certificate { box-shadow: none !important; }
  .cert-sticker { border: 1px solid #000; background: #fff; }
}

/*
 * Version 2 course mechanics. The first build was a card quiz wearing a fake
 * moustache; this layer gives the new course workbenches, visible consequences,
 * and persistent in-place feedback instead.
 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.new-hero-panel {
  grid-template-areas:
    "intro art"
    "opening art";
}

.new-hero-panel .hero-copy {
  border-bottom: 3px solid var(--nb-ink);
}

.hero-copy .hero-reassurance {
  margin: 22px 0 0;
  padding: 12px 14px;
  border: 2px solid var(--nb-ink);
  background: var(--nb-yellow);
  color: var(--nb-ink);
  font: 700 10px/1.6 var(--mono);
}

.opening-lab {
  grid-area: opening;
  padding: clamp(25px, 3vw, 42px);
  border-top: 0;
  background: var(--nb-yellow);
}

.opening-lab-head {
  display: grid;
  grid-template-columns: minmax(110px, .27fr) 1fr;
  gap: 15px;
  align-items: baseline;
  margin-bottom: 16px;
}

.opening-lab-head > p {
  max-width: 55ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(19px, 2vw, 27px);
  font-weight: 800;
  line-height: 1.08;
}

.prompt-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 19px;
}

.prompt-sample {
  min-height: 170px;
  padding: 16px;
  border: 3px solid var(--nb-ink);
  background: #fff;
  box-shadow: 5px 5px 0 var(--nb-ink);
}

.prompt-sample-useful {
  background: #edf5ff;
  box-shadow: 5px 5px 0 var(--nb-orange);
}

.prompt-sample > span {
  color: var(--nb-red);
  font: 700 10px var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.prompt-sample > p {
  margin: 15px 0 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.55;
}

.opening-lab .hero-cta-row { margin-top: 22px; }
.opening-lab .exercise-feedback { margin-bottom: 0; }

.course-toolbelt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 28px;
  padding: 15px 17px;
  border: 3px solid var(--nb-ink);
  background: var(--nb-blue);
  color: #fff;
  box-shadow: 7px 7px 0 var(--nb-ink);
}

.course-toolbelt .label { display: block; color: var(--nb-yellow); }
.course-toolbelt strong { display: block; margin-top: 3px; font-size: 16px; }
.theme-control { min-width: min(100%, 330px); }
.theme-control select { width: 100%; min-height: 47px; padding: 8px 12px; font-weight: 800; }

#lessonStage[hidden], .finish-panel[hidden] { display: none; }
#lessonStage > h2, .finish-panel h2 {
  max-width: 21ch;
  margin: 0 0 24px;
  font-family: var(--display);
  font-size: clamp(38px, 4.4vw, 62px);
  font-weight: 800;
  letter-spacing: -.06em;
  line-height: .95;
  text-transform: uppercase;
}

.chapter-outcome {
  max-width: 820px;
  margin: 0 0 23px;
  padding: 16px 18px;
  border: 2px solid var(--nb-ink);
  border-left: 10px solid var(--nb-mint);
  background: #edfbf5;
}

.chapter-outcome .label { color: var(--ok); }
.chapter-outcome p { margin: 6px 0 0; font-size: 16px; font-weight: 700; line-height: 1.45; }
.lesson-copy { max-width: 72ch; margin-bottom: 22px; }
.lesson-copy > .label { color: var(--nb-blue); }
.lesson-copy > p { color: var(--ink-2); font-size: 16px; line-height: 1.67; }

.activity-card { scroll-margin-top: 28px; }
.activity-card .desk-head { display: flex; justify-content: space-between; gap: 15px; align-items: baseline; }
.activity-state { color: var(--muted); font: 700 10px var(--mono); text-transform: uppercase; }
.activity-benefit {
  max-width: 70ch;
  margin: 15px 0 20px;
  padding: 12px 14px;
  border-left: 7px solid var(--nb-blue);
  background: #eef1ff;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.theme-grid, .maker-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 11px;
}

.theme-card, .maker-option {
  min-height: 150px;
  padding: 18px;
  border: 3px solid var(--nb-ink);
  background: var(--nb-paper-2);
  color: var(--nb-ink);
  text-align: left;
  box-shadow: 4px 4px 0 rgba(17, 16, 14, .22);
}

.theme-card:hover, .maker-option:hover { background: var(--nb-yellow); transform: translate(-1px, -1px); }
.theme-card.selected, .maker-option.selected { background: var(--nb-blue); color: #fff; box-shadow: 6px 6px 0 var(--nb-ink); }
.theme-card > span, .maker-option > strong { display: block; color: var(--nb-red); font: 700 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.theme-card.selected > span, .maker-option.selected > strong { color: var(--nb-yellow); }
.theme-card > strong { display: block; margin-top: 16px; font-size: 22px; line-height: 1.02; }
.theme-card > p, .maker-option > span { display: block; margin: 9px 0 0; color: inherit; font-size: 13px; line-height: 1.48; }
.maker-option > strong { margin-bottom: 15px; font-size: 18px; letter-spacing: 0; text-transform: none; }

.prompt-lab-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr);
  gap: 16px;
}

.studio-fields { align-content: start; }
.studio-field span { display: block; margin-bottom: 5px; color: var(--ink); font-size: 13px; font-weight: 800; }
.studio-field textarea { width: 100%; min-height: 85px; padding: 10px 11px; font: 400 13px/1.5 var(--body); }
.prompt-preview { display: flex; flex-direction: column; min-width: 0; background: var(--nb-yellow); }
.prompt-preview .label { color: var(--nb-red); }
.prompt-preview pre, .maker-preview pre, .evaluator-result pre, .kit-item pre {
  min-height: 180px;
  margin: 12px 0;
  padding: 13px;
  border: 2px solid var(--nb-ink);
  background: var(--nb-ink);
  color: #fff;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: 400 11.5px/1.65 var(--mono);
}

.activity-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.local-note { margin: 12px 0 0; color: var(--muted); font: 400 10.5px/1.5 var(--mono); }
.external-evaluator { margin-top: 15px; padding: 13px 14px; border: 2px solid var(--nb-ink); background: #f7f2e9; }
.external-evaluator summary { cursor: pointer; color: var(--nb-blue); font-weight: 800; }
.external-evaluator p { max-width: 72ch; color: var(--ink-2); font-size: 13px; line-height: 1.55; }
.evaluator-result { margin-top: 14px; padding: 16px; border: 2px solid var(--nb-ink); border-left: 9px solid var(--nb-blue); background: #eef1ff; }
.evaluator-result.is-correct { border-left-color: var(--ok); background: #edfbf5; }
.evaluator-result.is-close { border-left-color: var(--nb-orange); background: #fff3ed; }
.evaluator-result > strong { display: block; margin-top: 7px; font-size: 16px; }
.evaluator-result p, .evaluator-result li { color: var(--ink-2); font-size: 13px; line-height: 1.55; }

.match-board { display: grid; gap: 11px; }
.match-row { padding: 15px; border: 2px solid var(--nb-ink); background: var(--nb-paper-2); }
.match-row.is-correct { border-left: 9px solid var(--ok); background: #edfbf5; }
.match-row.is-wrong { border-left: 9px solid var(--nb-orange); background: #fff3ed; }
.match-row > p:first-child { margin: 0 0 12px; color: var(--ink-2); font-size: 14px; line-height: 1.5; }
.match-row select { width: min(100%, 440px); min-height: 46px; padding: 8px 10px; font-weight: 800; }
.answer-status { margin: 12px 0 0; padding: 9px 11px; border: 1px solid currentColor; color: var(--ink-2); font-size: 12.5px; line-height: 1.5; }
.answer-status.correct { color: var(--ok); background: #edfbf5; }
.answer-status.wrong { color: #8b310f; background: #fff3ed; }

.trust-case, .privacy-case, .test-plan, .maker-preview, .builder-mission {
  margin-top: 16px;
  padding: 18px;
  border: 3px solid var(--nb-ink);
  background: #fff;
}
.trust-case { margin-top: 0; background: #fff6ef; }
.privacy-case { background: #edf8f4; }
.trust-case h3, .privacy-case h3, .test-plan h3, .builder-mission h3 { max-width: 48ch; margin: 14px 0; font-size: clamp(20px, 2vw, 28px); line-height: 1.05; }
.claim-copy { max-width: 62ch; margin: 12px 0; font-size: 17px; font-weight: 800; line-height: 1.45; }
.evidence-list { display: grid; gap: 7px; margin: 13px 0 18px; }
.evidence-list p { margin: 0; padding: 9px 11px; border-left: 6px solid var(--nb-blue); background: #fff; color: var(--ink-2); font-size: 13px; line-height: 1.5; }

.choice-button.selected, .choice-button[aria-pressed="true"] { background: var(--nb-blue); color: #fff; }
.choice-button.is-correct { background: #dff8ed; color: var(--ok); border-color: var(--ok); }
.choice-button.is-close { background: #fff2bc; color: var(--ink); border-color: #a37500; }
.choice-button.is-wrong { background: #fff0eb; color: #8b310f; border-color: var(--nb-orange); }

.exercise-feedback.is-correct { border-left-color: var(--ok); background: #edfbf5; }
.exercise-feedback.is-close { border-left-color: #b08000; background: #fff5bc; }
.exercise-feedback.is-wrong { border-left-color: var(--nb-red); background: #fff0eb; }
.exercise-feedback > strong { display: block; margin-bottom: 8px; }
.feedback-section { margin-top: 10px; }
.feedback-section > span { display: block; color: var(--nb-red); font: 700 9px var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.feedback-section > p { margin: 3px 0 0; color: var(--ink-2); font-size: 13.5px; line-height: 1.55; }

.selection-count { margin: 0 0 13px; padding: 10px 12px; border: 2px solid var(--nb-ink); background: var(--nb-yellow); font-weight: 800; }
.provider-grid { gap: 12px; }
.provider-card { display: block; padding: 0; overflow: hidden; border: 3px solid var(--nb-ink); background: var(--nb-paper-2); }
.provider-card.selected { box-shadow: 6px 6px 0 var(--nb-blue); }
.provider-card > header { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 14px 15px; border-bottom: 2px solid var(--nb-ink); background: var(--nb-ink); color: #fff; font-weight: 800; }
.provider-pick { min-height: 36px; padding: 7px 10px; border: 2px solid var(--nb-yellow); background: transparent; color: var(--nb-yellow); font: 700 9px var(--mono); text-transform: uppercase; }
.provider-pick[aria-pressed="true"] { background: var(--nb-yellow); color: var(--nb-ink); }
.provider-card > p { margin: 0; padding: 15px 15px 0; color: var(--ink-2); font-size: 13.5px; line-height: 1.55; }
.provider-card dl { margin: 13px 15px; }
.provider-card dl > div { display: grid; grid-template-columns: 125px 1fr; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.provider-card dt { color: var(--nb-red); font: 700 9px var(--mono); text-transform: uppercase; }
.provider-card dd { margin: 0; color: var(--ink-2); font-size: 12.5px; line-height: 1.5; }
.provider-card > a { display: inline-block; margin: 0 15px 15px; color: var(--nb-blue); font-size: 12px; font-weight: 800; text-underline-offset: 3px; }
.test-plan { background: #eef1ff; }
.snapshot-note { margin: 15px 0 0; color: var(--muted); font: 400 10.5px/1.55 var(--mono); }

.model-guide { margin-bottom: 18px; padding: 16px; border: 3px solid var(--nb-ink); background: var(--nb-yellow); }
.model-guide .tier-rule { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.model-guide .tier-rule article { min-height: 130px; padding: 13px; border-right: 2px solid var(--nb-ink); }
.model-guide .tier-rule article:nth-child(n) { background: #fff; }
.model-guide .tier-rule article:nth-child(even) { background: #edf5ff; }
.model-guide .tier-rule article:last-child { border-right: 0; }
.model-guide .tier-rule strong { margin: 0; font-size: 15px; }
.model-names { margin-top: 14px; padding: 13px; border: 2px solid var(--nb-ink); background: #fff; }
.model-names > .label { color: var(--nb-red); }
.model-names p { margin: 9px 0; color: var(--ink-2); font-size: 12.5px; line-height: 1.5; }

.workflow-canvas { display: grid; gap: 12px; }
.workflow-stage { position: relative; padding: 18px; border: 3px solid var(--nb-ink); background: #fff; }
.workflow-stage.is-correct { border-left: 10px solid var(--ok); background: #edfbf5; }
.workflow-stage.is-wrong { border-left: 10px solid var(--nb-orange); background: #fff3ed; }
.workflow-stage > span { color: var(--nb-red); font: 700 10px var(--mono); }
.workflow-stage > h3 { margin: 7px 0 13px; font-size: 20px; }
.workflow-stage .choice-grid { grid-template-columns: 1fr; }
.workflow-stage .choice-button { min-height: 48px; text-align: left; }

.maker-preview { background: #eef1ff; }
.maker-preview pre { min-height: 220px; }
.builder-mission { background: var(--nb-ink); color: #fff; }
.builder-mission .label { color: var(--nb-yellow); }
.builder-mission > p { color: rgba(255,255,255,.76); font-size: 13px; line-height: 1.5; }
.builder-mission .maker-option { border-color: #fff; background: var(--nb-paper-2); }
.builder-mission .maker-option.selected { border-color: var(--nb-yellow); background: var(--nb-blue); }
.builder-mission .choice-button { border-color: #fff; }
.builder-mission .choice-button.selected { border-color: var(--nb-yellow); }
.builder-mission .choice-button.is-correct { border-color: var(--ok); background: #dff8ed; color: var(--ok); }
.builder-mission .choice-button.is-wrong { border-color: var(--nb-orange); background: #fff0eb; color: #8b310f; }

.glossary { display: grid; gap: 12px; margin-bottom: 18px; padding: 17px; border: 3px solid var(--nb-ink); background: #fff; }
.glossary > .label { color: var(--nb-blue); }
.glossary > article { padding: 14px; border: 2px solid var(--nb-ink); background: var(--nb-paper-2); }
.glossary h3 { margin: 0 0 12px; font-size: 23px; }
.glossary dl { margin: 0; }
.glossary dl > div { display: grid; grid-template-columns: 135px 1fr; gap: 12px; padding: 9px 0; border-top: 1px solid var(--line); }
.glossary dt { color: var(--nb-red); font: 700 9px var(--mono); text-transform: uppercase; }
.glossary dd { margin: 0; color: var(--ink-2); font-size: 12.5px; line-height: 1.5; }

.finish-panel { margin: 0 0 94px; }
.finish-panel .finish-block { margin-bottom: 26px; }
.kit-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; margin: 20px 0; }
.kit-item { min-width: 0; padding: 14px; border: 2px solid var(--nb-ink); background: var(--nb-paper-2); }
.kit-item > span { display: block; color: var(--nb-red); font: 700 9px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.kit-item > p { margin: 7px 0 0; color: var(--ink-2); font-size: 13px; line-height: 1.5; }
.kit-item pre { min-height: 0; margin: 8px 0 0; }
.finish-panel .next-step { background: #edf5ff; }

@media (max-width: 1050px) {
  .new-hero-panel { grid-template-areas: "intro" "art" "opening"; }
}

@media (max-width: 720px) {
  .opening-lab-head { grid-template-columns: 1fr; gap: 7px; }
  .prompt-compare, .theme-grid, .maker-options, .prompt-lab-grid, .kit-grid { grid-template-columns: 1fr; }
  .prompt-sample { min-height: 0; }
  .course-toolbelt { display: block; }
  .theme-control { display: block; margin-top: 12px; }
  .model-guide .tier-rule { grid-template-columns: 1fr; }
  .model-guide .tier-rule article { min-height: 0; border-right: 0; border-bottom: 2px solid var(--nb-ink); }
  .model-guide .tier-rule article:last-child { border-bottom: 0; }
  .provider-card dl > div, .glossary dl > div { grid-template-columns: 1fr; gap: 4px; }
  .provider-card > header { align-items: flex-start; flex-direction: column; }
}

/*
 * Fazore palette alignment
 * ------------------------
 * This course can still be the cheeky cousin at dinner. It simply wears the
 * same navy, powder-blue and editorial type as the rest of the family now.
 */
.site-header {
  background: var(--fz-ink-deep);
  border-bottom: 1px solid rgba(255,255,255,.12);
}

.wordmark { letter-spacing: .04em; }
.wordmark small, .footer-brand small { color: var(--fz-blue-high); }
.wordmark-mark {
  border: 0;
  border-radius: 50%;
  background: var(--fz-blue-deep);
  box-shadow: none;
  font-family: var(--display);
  font-weight: 500;
  transform: none;
}
.header-course { color: rgba(255,255,255,.64); }
.language-switch button:hover { color: #fff; }
.language-switch button.active {
  border-color: transparent;
  background: transparent;
  color: #fff;
}
.language-switch button.active::after {
  display: block;
  height: 2px;
  margin-top: 2px;
  background: var(--fz-blue-high);
}

.hero-outer {
  padding: 26px 0 40px;
  background: var(--fz-ink-deep);
  background-image: none;
}
.hero-tape { color: rgba(255,255,255,.22); }
.hero-panel {
  border: 1px solid rgba(255,255,255,.25);
  background: var(--fz-powder);
  box-shadow: none;
}
.hero-copy,
.new-hero-panel .hero-copy {
  border-bottom: 1px solid rgba(10,27,61,.18);
  background: var(--fz-powder);
}
.hero-copy .eyebrow {
  margin-bottom: 18px;
  padding: 0;
  background: transparent;
  color: var(--fz-blue-deep);
  transform: none;
}
h1,
#lessonStage > h2,
.finish-panel h2,
.lesson-panel h2,
.course-orientation h2 {
  font-family: var(--fz-font-editorial);
  font-weight: 500;
  letter-spacing: -.04em;
  text-transform: none;
}
h1 { line-height: .98; }
h1 em { transform: none; }
.hero-copy .hero-reassurance {
  border: 0;
  border-left: 3px solid var(--fz-blue-deep);
  background: rgba(255,255,255,.5);
  color: var(--fz-ink-secondary);
  font: 500 12px/1.55 var(--fz-font-body);
}
.hero-art {
  border-left: 1px solid rgba(10,27,61,.18);
  background: var(--fz-blue-deep);
}
.hero-art img { filter: none; }
.hero-art figcaption {
  border-top: 1px solid var(--fz-line-soft);
  background: var(--fz-white);
  color: var(--fz-ink-muted);
  font: 400 11px/1.5 var(--fz-font-body);
}

.opening-lab {
  border-top: 1px solid rgba(10,27,61,.18);
  background: var(--fz-white);
}
.opening-lab-head > p {
  font-family: var(--fz-font-editorial);
  font-weight: 500;
  letter-spacing: -.02em;
}
.prompt-sample,
.opening-artifact .hero-board-card,
.opening-artifact .evidence-card {
  border-color: var(--fz-line);
  background: var(--fz-paper-soft);
  box-shadow: none;
}
.prompt-sample-useful,
.opening-artifact .evidence-card.source {
  border-color: #bed0ed;
  background: var(--fz-powder);
  box-shadow: inset 3px 0 0 var(--fz-blue-deep);
}
.opening-choices .choice-button,
.start-btn,
.solid-btn {
  border: 1px solid var(--fz-ink);
  box-shadow: none;
}
.opening-choices .choice-button:hover {
  border-color: var(--fz-blue-deep);
  background: var(--fz-paper-soft);
  box-shadow: none;
  transform: none;
}
.opening-choices .choice-button[aria-pressed="true"] {
  border-color: var(--fz-ink-deep);
  background: var(--fz-ink-deep);
  color: #fff;
}
.opening-promise {
  border: 0;
  border-left: 3px solid var(--fz-blue-deep);
  background: rgba(42,111,219,.07);
}
.start-btn,
.solid-btn {
  background: var(--fz-ink-deep);
  color: #fff;
  font-weight: 600;
  text-transform: none;
}
.start-btn:hover,
.solid-btn:hover { background: var(--fz-blue-deep); color: #fff; transform: none; }

.course-orientation {
  border: 1px solid var(--fz-ink);
  background: var(--fz-white);
  box-shadow: 6px 6px 0 rgba(6,15,38,.07);
  color: var(--fz-ink);
}
.course-orientation .label { color: var(--fz-blue-deep); }
.course-orientation h2 { color: var(--fz-ink); }
.course-orientation-copy > p { color: var(--fz-ink-secondary); }
.module-cards { grid-template-columns: repeat(2,minmax(0,1fr)); }
.module-card,
.module-card:nth-child(2),
.module-card:nth-child(3),
.module-card:nth-child(4) {
  min-height: 0;
  border: 1px solid var(--fz-line);
  background: var(--fz-paper-soft);
  color: var(--fz-ink);
  box-shadow: none;
  transform: none;
}
.module-card:nth-child(3) { background: var(--fz-powder); }
.module-card:nth-child(4) { background: var(--fz-white); }
.module-number,
.module-card:nth-child(4) .module-number {
  margin-bottom: 10px;
  padding: 0;
  background: transparent;
  color: var(--fz-blue-deep);
}
.storage-note {
  border-left-color: var(--fz-blue-deep);
  background: transparent;
  color: var(--fz-ink-muted);
}
.course-toolbelt {
  border: 1px solid #bed0ed;
  background: var(--fz-powder);
  color: var(--fz-ink);
  box-shadow: none;
}
.course-toolbelt .label { color: var(--fz-blue-deep); }
.theme-control select { border-color: var(--fz-line); background: var(--fz-white); }

.contents {
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  color: var(--fz-ink);
}
.contents > .label {
  padding-bottom: 10px;
  border-color: var(--fz-ink);
  color: var(--fz-blue-deep);
}
.module-tab-heading {
  border-color: var(--fz-ink);
  color: var(--fz-ink);
}
.module-tab-heading > span,
.module-tab-heading small { color: var(--fz-blue-deep); }
.lesson-tab {
  border-color: var(--fz-line);
  color: var(--fz-ink-muted);
}
.lesson-tab:not(:disabled):hover { color: var(--fz-ink); }
.lesson-tab.active {
  margin: 0;
  padding-inline: 7px;
  background: transparent;
  color: var(--fz-ink);
  box-shadow: none;
}
.lesson-tab.active::before {
  display: block;
  content: "";
  position: absolute;
  left: -12px;
  top: 12px;
  bottom: 12px;
  width: 3px;
  background: var(--fz-blue-deep);
}
.lesson-tab.active .tab-n { color: var(--fz-blue-deep); }
.tab-state { color: var(--fz-success); }
.rail-score {
  border: 1px solid #bed0ed;
  background: var(--fz-powder);
  color: var(--fz-ink);
}
.rail-score .label,
.score-hint { color: var(--fz-ink-muted); }
.rail-ready { color: var(--fz-ink); font-family: var(--fz-font-editorial); font-weight: 500; }

.desk {
  border: 1px solid var(--fz-ink);
  background: var(--fz-white);
  box-shadow: 5px 5px 0 rgba(6,15,38,.07);
}
.desk-head { border-bottom: 1px solid var(--fz-line); }
.desk-head .label { color: var(--fz-blue-deep); }
.conversation-question { font-family: var(--fz-font-editorial); font-weight: 500; }
.choice-button {
  border: 1px solid var(--fz-line);
  background: var(--fz-paper-soft);
  color: var(--fz-ink);
  box-shadow: none;
  font-weight: 600;
}
.choice-button:hover {
  border-color: var(--fz-blue-deep);
  background: var(--fz-white);
  transform: none;
}
.exercise-feedback {
  border: 1px solid var(--fz-line);
  border-left: 4px solid var(--fz-blue-deep);
  background: var(--fz-paper-soft);
}

.lesson-stage {
  border: 1px solid var(--fz-line);
  background: var(--fz-white);
  box-shadow: 6px 6px 0 rgba(6,15,38,.07);
}
.folio { color: var(--fz-blue-deep); }
.folio .line { height: 1px; background: var(--fz-line); }
.folio .time { color: var(--fz-ink-muted); }
.lesson-panel h3,
.provider-flight > header h3,
.model-decoder > header h3,
.surface-deck > header h3,
.terminal-lab > header h3,
.resource-deck > header h3 {
  font-family: var(--fz-font-editorial);
  font-weight: 500;
  letter-spacing: -.025em;
  text-transform: none;
}
.key-term { color: var(--fz-ink); }
.conversation-turn {
  border: 1px solid var(--fz-line);
  border-left: 4px solid var(--fz-blue-deep);
  background: var(--fz-white);
  box-shadow: none;
}
.conversation-turn.simulated { border-left-color: var(--fz-warning); }
.conversation-turn .turn-label { color: var(--fz-blue-deep); }
.conversation-turn.simulated .turn-label { color: var(--fz-warning); }
.says,
.model-rows > article > header,
.provider-card > header,
.terminal-lab,
.builder-mission,
.motion-head {
  background: var(--fz-ink-deep);
}
.says { border: 0; }
.says-reply {
  border: 1px solid var(--fz-line);
  background: var(--fz-white);
  box-shadow: inset 3px 0 0 var(--fz-blue-deep);
}
.rule-line {
  border: 1px solid var(--fz-line-soft);
  background: var(--fz-paper-soft);
  box-shadow: none;
}
.rule-line .label { color: var(--fz-blue-deep); }
.rule-line p { font-family: var(--fz-font-editorial); font-weight: 500; }
.pause-card,
.learning-note,
.activity-benefit,
.evaluator-result,
.test-plan,
.maker-preview,
.finish-panel .next-step {
  border: 1px solid var(--fz-line);
  border-left: 4px solid var(--fz-blue-deep);
  background: var(--fz-paper-soft);
}
.module-complete {
  border: 1px solid var(--fz-blue-deep);
  background: var(--fz-powder);
  box-shadow: none;
}
.reference-rail {
  border: 1px solid #bed0ed;
  background: var(--fz-powder);
  box-shadow: none;
}
.reference-rail > .label { color: var(--fz-blue-deep); }
.chapter-visual,
.video-placeholder.motion-note,
.provider-flight,
.model-decoder,
.surface-deck,
.terminal-lab,
.resource-deck {
  border: 1px solid var(--fz-line);
  box-shadow: 6px 6px 0 rgba(6,15,38,.07);
}
.chapter-visual { background: var(--fz-white); }
.chapter-visual figcaption {
  border-top: 1px solid var(--fz-line-soft);
  background: var(--fz-white);
  color: var(--fz-ink-muted);
}
.visual-receipt {
  border: 1px solid var(--fz-blue-deep);
  background: var(--fz-white);
  color: var(--fz-blue-deep);
  transform: none;
}
.video-placeholder.motion-note { background: var(--fz-white); }
.motion-head { border-bottom: 1px solid rgba(255,255,255,.2); }
.motion-head .video-copy > strong,
.terminal-lab .label,
.builder-mission .label { color: var(--fz-blue-high); }
.motion-frame,
.motion-frame:nth-child(2),
.motion-frame:nth-child(3) {
  border-color: var(--fz-line);
  background: var(--fz-paper-soft);
}
.motion-frame:nth-child(2) { background: var(--fz-powder); }

.provider-flight,
.resource-deck { background: var(--fz-white); }
.provider-card,
.theme-card,
.maker-option,
.match-row,
.workflow-stage,
.trust-case,
.privacy-case,
.glossary,
.glossary > article,
.kit-item {
  border: 1px solid var(--fz-line);
  background: var(--fz-paper-soft);
  box-shadow: none;
}
.workflow-stage.is-correct,
.workflow-stage.is-wrong,
.match-row.is-correct,
.match-row.is-wrong { border-left-width: 4px; }
.provider-card[open] { box-shadow: 4px 4px 0 rgba(6,15,38,.08); }
.provider-card summary,
.provider-card > header { border-color: var(--fz-line); }
.provider-card > header { border-bottom-width: 1px; }
.provider-card > header { color: #fff; }
.provider-card .provider-pick {
  border-color: var(--fz-blue-high);
  color: var(--fz-blue-high);
}
.provider-card .provider-pick[aria-pressed="true"] {
  background: var(--fz-blue-high);
  color: var(--fz-ink-deep);
}
.model-decoder,
.model-guide,
.prompt-preview,
.selection-count { background: var(--fz-powder); }
.model-guide { border: 1px solid #bed0ed; }
.tier-rule,
.model-names { border-color: var(--fz-line); }
.tier-rule article,
.model-guide .tier-rule article,
.model-guide .tier-rule article:nth-child(even) {
  border-color: var(--fz-line);
  background: var(--fz-white);
}
.tier-rule article:nth-child(2),
.model-guide .tier-rule article:nth-child(even) { background: var(--fz-paper-soft); }
.surface-deck { background: var(--fz-blue-deep); }
.surface-deck .label { color: var(--fz-powder); }
.surface-card,
.surface-card:nth-child(2) {
  border-color: rgba(255,255,255,.45);
  background: var(--fz-white);
  box-shadow: none;
}
.terminal-lab { box-shadow: 6px 6px 0 rgba(6,15,38,.12); }
.terminal-prereq { border-color: #bed0ed; background: var(--fz-powder); }
.terminal-tool { border-color: rgba(255,255,255,.28); background: var(--fz-ink); }
.terminal-tool[open] { border-color: var(--fz-blue-high); }
.terminal-tool summary > span,
.terminal-command > span { color: var(--fz-blue-high); }

.theme-card:hover,
.maker-option:hover { background: var(--fz-powder); transform: none; }
.theme-card.selected,
.maker-option.selected,
.choice-button.selected,
.choice-button[aria-pressed="true"] {
  border-color: var(--fz-ink-deep);
  background: var(--fz-ink-deep);
  color: #fff;
  box-shadow: none;
}
.theme-card > span,
.maker-option > strong,
.prompt-sample > span,
.provider-index,
.provider-card dt,
.model-names > .label,
.workflow-stage > span,
.glossary > .label,
.glossary dt,
.kit-item > span,
.feedback-section > span {
  color: var(--fz-blue-deep);
}
.choice-button.is-correct,
.builder-mission .choice-button.is-correct {
  border-color: var(--fz-success);
  background: #e7f3ec;
  color: var(--fz-success);
}
.choice-button.is-close {
  border-color: var(--fz-warning);
  background: #f7eee8;
  color: var(--fz-warning);
}
.choice-button.is-wrong,
.builder-mission .choice-button.is-wrong {
  border-color: var(--fz-error);
  background: #f9e9e9;
  color: var(--fz-error);
}
.exercise-feedback.is-correct,
.workflow-stage.is-correct,
.match-row.is-correct { border-left-color: var(--fz-success); background: #e7f3ec; }
.exercise-feedback.is-close { border-left-color: var(--fz-warning); background: #f7eee8; }
.exercise-feedback.is-wrong,
.workflow-stage.is-wrong,
.match-row.is-wrong { border-left-color: var(--fz-error); background: #f9e9e9; }
.trust-case { background: var(--fz-paper-soft); }
.privacy-case { background: #edf6ef; }
.evidence-list p { border-left-color: var(--fz-blue-deep); }
.builder-mission .maker-option { border-color: rgba(255,255,255,.45); background: var(--fz-white); }
.builder-mission .maker-option.selected { border-color: var(--fz-blue-high); background: var(--fz-blue-deep); }

.finish-block,
.use-card,
.certificate {
  border: 1px solid var(--fz-line);
  background: var(--fz-white);
  box-shadow: 6px 6px 0 rgba(6,15,38,.07);
}
.finish-block:nth-of-type(2) { background: var(--fz-powder); }
.next-step { border-left-color: var(--fz-blue-deep); }
.cert-sticker {
  border: 1px solid var(--fz-blue-deep);
  background: var(--fz-powder);
  color: var(--fz-ink);
  transform: none;
}
.site-footer {
  border-top: 0;
  background: var(--fz-ink-deep);
}
.toast {
  border: 1px solid rgba(255,255,255,.2);
  background: var(--fz-ink-deep);
  box-shadow: 0 14px 40px rgba(6,15,38,.3);
}

@media (max-width: 1050px) {
  .hero-art { border-left: 0; border-top: 1px solid rgba(10,27,61,.18); }
}

@media (max-width: 900px) {
  .hero-panel { box-shadow: none; }
  .contents {
    padding: 0;
    border: 0;
    border-bottom: 2px solid var(--fz-ink);
    box-shadow: none;
  }
  .lesson-tab {
    border: 0;
    color: var(--fz-ink-muted);
  }
  .lesson-tab.active::before {
    left: 0;
    right: 0;
    top: auto;
    bottom: -2px;
    width: auto;
    height: 3px;
  }
  .lesson-stage { box-shadow: 6px 6px 0 rgba(6,15,38,.07); }
}

@media (max-width: 720px) {
  .module-cards { grid-template-columns: 1fr; }
}

@media print {
  body { background: #fff !important; }
  .lesson-stage,
  .course-orientation,
  .finish-block,
  .use-card,
  .certificate { box-shadow: none !important; }
}