/* ==========================================================================
   USINA.AI DESIGN SYSTEM — SSM & SU INTERACTIVE TRAINING PLATFORM
   Brand Palette:
   --blue: #0041B5 | --orange: #F2673C | --ink: #14243A | --green: #1B7A45
   ========================================================================== */

:root {
  --blue: #0041B5;
  --blue-dark: #003694;
  --blue-tint: #EAF0FC;
  --orange: #F2673C;
  --coral-action: #C24520;
  --orange-tint: #FFF1EB;
  --ink: #14243A;
  --ink-2: #3D4453;
  --ink-3: #6B7280;
  --paper: #FFFFFF;
  --soft: #F5F7FA;
  --soft-2: #EDF1F9;
  --line: #DDE3F3;
  --line-2: #E7EAF3;
  --green: #1B7A45;
  --green-tint: #E8F5EE;
  --red: #C0341A;
  --red-tint: #FDECE8;
  --amber: #9A6400;
  --amber-tint: #FFF4E0;
  --display: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --wrap: 1180px;
  --r: 14px;
  --r-lg: 20px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 12px 32px -12px rgba(0, 65, 181, .16);
  --shadow-lg: 0 2px 4px rgba(16, 24, 40, .05), 0 40px 80px -30px rgba(0, 49, 138, .34);
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

section[id] {
  scroll-margin-top: 90px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 76px; /* Space for mobile bottom nav */
}

@media (min-width: 921px) {
  body {
    padding-bottom: 0;
  }
}

h1, h2, h3, h4, .display {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4.4vw, 3.35rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.35rem);
}

h3 {
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  line-height: 1.32;
}

p {
  margin: 0;
}

a {
  color: var(--blue);
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

.sec {
  padding: 84px 0;
}

.sec.tight {
  padding: 60px 0;
}

.soft {
  background: var(--soft);
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
}

.ink-bg {
  background:
    radial-gradient(900px 420px at 12% 4%, rgba(0, 65, 181, .42) 0%, rgba(11, 18, 32, 0) 60%),
    radial-gradient(700px 400px at 92% 96%, rgba(242, 103, 60, .2) 0%, rgba(11, 18, 32, 0) 58%),
    #14243A;
  color: #fff;
}

.eyebrow {
  font-family: var(--display);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.eyebrow.orange {
  color: var(--orange);
}

.eyebrow.light {
  color: #8FB0F0;
}

.lede {
  font-size: 1.12rem;
  color: var(--ink-2);
  max-width: 64ch;
}

.sec-head {
  max-width: 740px;
  margin-bottom: 42px;
}

.sec-head p {
  margin-top: 16px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-family: var(--display);
  font-weight: 600;
  font-size: .88rem;
  letter-spacing: -0.01em;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: .16s ease;
  text-decoration: none;
  white-space: nowrap;
  min-height: 44px;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 6px 16px -6px rgba(0, 65, 181, .5);
}

.btn-primary:hover {
  background: var(--blue-dark);
}

.btn-orange {
  background: var(--orange);
  color: #fff;
  box-shadow: 0 6px 16px -6px rgba(242, 103, 60, .5);
}

.btn-orange:hover {
  background: var(--coral-action);
}

.btn-ghost {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}

.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.btn-sm {
  padding: 8px 16px;
  font-size: .78rem;
  min-height: 36px;
}

/* ---------- Sticky Header & Top Progress ---------- */
header.site {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-2);
}

.top-progress-track {
  height: 4px;
  background: var(--soft-2);
  width: 100%;
  overflow: hidden;
}

.top-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--blue) 0%, var(--orange) 100%);
  width: 0%;
  transition: width .35s cubic-bezier(.4, 0, .2, 1);
}

.bar {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 68px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none !important;
  color: var(--ink);
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--blue);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: .95rem;
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  top: -3px;
  right: -3px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
  border: 2px solid #fff;
}

.brand-text strong {
  display: block;
  font-size: .98rem;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.brand-text small {
  display: block;
  font-size: .65rem;
  color: var(--ink-3);
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}

nav.main {
  display: flex;
  gap: 22px;
  margin-left: auto;
  align-items: center;
}

nav.main a {
  font-family: var(--display);
  font-size: .8rem;
  font-weight: 600;
  color: var(--ink-2);
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

nav.main a:hover, nav.main a.active {
  color: var(--blue);
  text-decoration: none;
}

.progress-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--soft);
  border: 1px solid var(--line);
  padding: 6px 13px;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 700;
  color: var(--ink);
}

.progress-pill b {
  color: var(--blue);
}

.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 9px;
  width: 42px;
  height: 42px;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--ink);
}

/* ---------- Chips & Pills ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 15px 6px 10px;
  font-size: .74rem;
  font-weight: 600;
  font-family: var(--display);
  letter-spacing: .02em;
  color: var(--ink-2);
  margin-bottom: 22px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}

.pill i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px var(--orange-tint);
  display: block;
}

.chip {
  font-family: var(--display);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.chip.green { background: var(--green-tint); color: var(--green); }
.chip.blue { background: var(--blue-tint); color: var(--blue); }
.chip.red { background: var(--red-tint); color: var(--red); }
.chip.amber { background: var(--amber-tint); color: var(--amber); }
.chip.orange { background: var(--orange-tint); color: var(--coral-action); }

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 72px;
  background:
    radial-gradient(1100px 460px at 82% -6%, #E8F0FF 0%, rgba(232, 240, 255, 0) 62%),
    linear-gradient(180deg, #FBFCFF 0%, #FFFFFF 62%);
  border-bottom: 1px solid var(--line-2);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 48px;
  align-items: center;
}

.hero h1 .beat {
  display: block;
}

.hero h1 .hl {
  color: var(--blue);
}

.hero-cta {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.profile-selector-bar {
  margin-top: 28px;
  padding: 14px 16px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.profile-selector-bar span {
  font-size: .78rem;
  font-weight: 700;
  color: var(--ink-2);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.profile-btns {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.profile-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-family: var(--display);
  font-size: .76rem;
  font-weight: 600;
  padding: 7px 13px;
  border-radius: 999px;
  cursor: pointer;
  transition: .15s;
  min-height: 36px;
}

.profile-btn.active {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}

/* Statutory Stack Card in Hero */
.stack {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px;
  box-shadow: var(--shadow-lg);
}

.hero-illustration-wrap {
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 18px;
  border: 1px solid var(--line-2);
  background: var(--blue-tint);
  position: relative;
}

.hero-illustration-wrap img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.stack-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-2);
  margin-bottom: 8px;
  gap: 10px;
}

.stack-top strong {
  font-size: .88rem;
  display: block;
}

.stack-top small {
  font-size: .74rem;
  color: var(--ink-3);
  display: block;
  margin-top: 2px;
}

.srow {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 10px 4px;
  cursor: pointer;
  border-radius: 8px;
  transition: background .15s;
}

.srow:hover {
  background: var(--soft);
}

.srow + .srow {
  border-top: 1px solid #F1F4FA;
}

.sdot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  flex: 0 0 24px;
  display: grid;
  place-items: center;
  font-size: .7rem;
  font-weight: 700;
}

.sdot.done { background: var(--green); color: #fff; }
.sdot.now { background: var(--blue); color: #fff; }
.sdot.wait { background: #fff; border: 1.5px dashed var(--line); color: var(--ink-3); }

.srow div {
  flex: 1;
  min-width: 0;
}

.srow strong {
  font-size: .85rem;
  display: block;
}

.srow small {
  font-size: .74rem;
  color: var(--ink-3);
}

/* ---------- 3D Interactive Flip Cards (Module 1) ---------- */
.flip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.flip-card {
  background: transparent;
  perspective: 1100px;
  min-height: 295px;
  cursor: pointer;
}

.flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 295px;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.flip-card.flipped .flip-inner {
  transform: rotateY(180deg);
}

.flip-front, .flip-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--r);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
}

.flip-card:hover .flip-front {
  border-color: #BFD0F0;
}

.flip-card.read .flip-front {
  border-left: 4px solid var(--green);
}

.flip-back {
  transform: rotateY(180deg);
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.flip-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.flip-num {
  font-family: var(--display);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .13em;
  color: var(--orange);
  text-transform: uppercase;
}

.flip-status {
  font-size: .68rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 99px;
  background: var(--soft-2);
  color: var(--ink-3);
}

.flip-card.read .flip-status {
  background: var(--green-tint);
  color: var(--green);
}

.flip-front h3 {
  font-size: 1.12rem;
  margin-bottom: 10px;
}

.flip-front p {
  font-size: .9rem;
  color: var(--ink-2);
}

.flip-hint {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--line-2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .76rem;
  font-weight: 600;
  color: var(--blue);
}

.flip-back h4 {
  color: #8FB0F0;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 10px;
}

.flip-back ul {
  margin: 0;
  padding-left: 18px;
  font-size: .86rem;
  color: #E2E8F4;
  line-height: 1.52;
}

.flip-back li + li {
  margin-top: 7px;
}

.flip-back .law-ref {
  margin-top: 12px;
  padding: 8px 11px;
  border-radius: 8px;
  background: rgba(255, 255, 255, .08);
  font-size: .74rem;
  color: #BFD0F5;
}

/* ---------- Safety Signs Strip ---------- */
.signs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 32px;
}

.sign-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.sign-badge {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.sign-badge.prohibit { background: var(--red-tint); color: var(--red); border: 2px solid var(--red); border-radius: 50%; }
.sign-badge.warn { background: var(--amber-tint); color: var(--amber); border: 2px solid var(--amber); }
.sign-badge.mandatory { background: var(--blue-tint); color: var(--blue); border: 2px solid var(--blue); border-radius: 50%; }
.sign-badge.escape { background: var(--green-tint); color: var(--green); border: 2px solid var(--green); }

.sign-card strong {
  display: block;
  font-size: .88rem;
  margin-bottom: 4px;
}

.sign-card p {
  font-size: .78rem;
  color: var(--ink-2);
  line-height: 1.45;
}

/* ---------- Interactive Risk Hotspot Map (Module 2) ---------- */
.scene-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.scene-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-family: var(--display);
  font-weight: 600;
  font-size: .84rem;
  cursor: pointer;
  transition: .16s;
  min-height: 44px;
}

.scene-tab.active {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
  box-shadow: 0 6px 18px -6px rgba(0, 65, 181, .45);
}

.risk-explorer {
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 24px;
  align-items: start;
}

.map-canvas {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #14243A;
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
}

.map-canvas img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hotspot-pin {
  position: absolute;
  transform: translate(-50%, -50%);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 2.5px solid #fff;
  background: var(--orange);
  color: #fff;
  font-family: var(--display);
  font-weight: 800;
  font-size: .82rem;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 0, 0, .4), 0 0 0 6px rgba(242, 103, 60, .28);
  transition: transform .2s ease, background .2s ease;
  z-index: 5;
}

.hotspot-pin:hover, .hotspot-pin.active {
  transform: translate(-50%, -50%) scale(1.18);
  background: var(--blue);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .5), 0 0 0 8px rgba(0, 65, 181, .35);
  z-index: 10;
}

.hotspot-pin.visited {
  background: var(--green);
  box-shadow: 0 4px 12px rgba(0, 0, 0, .35), 0 0 0 5px rgba(27, 122, 69, .28);
}

.hotspot-pin.visited.active {
  background: var(--blue);
}

.map-legend-bar {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  background: rgba(20, 36, 58, .88);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 9px 14px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .75rem;
  gap: 10px;
  flex-wrap: wrap;
}

.risk-detail-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px;
  box-shadow: var(--shadow);
}

.risk-detail-card h3 {
  font-size: 1.2rem;
  margin: 10px 0 8px;
}

.risk-meta-box {
  margin-top: 14px;
  padding: 13px;
  border-radius: 11px;
  background: var(--soft);
  border-left: 3px solid var(--blue);
  font-size: .86rem;
}

.risk-meta-box.danger {
  background: var(--red-tint);
  border-left-color: var(--red);
  color: #6E1C0D;
}

.risk-meta-box.safe {
  background: var(--green-tint);
  border-left-color: var(--green);
  color: #114B2B;
}

.risk-meta-box strong {
  display: block;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 4px;
}

.risk-nav-btns {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line-2);
}

/* ---------- Interactive PPE / EIP Selector ---------- */
.eip-container {
  margin-top: 52px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  box-shadow: var(--shadow);
}

.eip-role-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 18px 0 24px;
}

.eip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.eip-item {
  border: 1.5px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  background: #fff;
  cursor: pointer;
  transition: .16s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.eip-item:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}

.eip-item.required {
  border-color: var(--blue);
  background: #F6F9FF;
  box-shadow: 0 4px 14px -4px rgba(0, 65, 181, .18);
}

.eip-item.inspected::after {
  content: "✓";
  position: absolute;
  top: 12px;
  right: 12px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-size: .68rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.eip-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--blue-tint);
  color: var(--blue);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
}

.eip-item.required .eip-icon {
  background: var(--blue);
  color: #fff;
}

.eip-item strong {
  font-size: .88rem;
  display: block;
}

.eip-item small {
  font-size: .75rem;
  color: var(--ink-3);
  line-height: 1.4;
}

.eip-inspector-banner {
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: 12px;
  background: var(--ink);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.eip-inspector-banner h4 {
  color: var(--orange);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: 4px;
}

.eip-inspector-banner p {
  font-size: .88rem;
  color: #D0DAEC;
}

/* ---------- Module 3: PSI, Emergency Simulator & First Aid ---------- */
.psi-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}

.ext-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 16px;
}

.ext-card {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 12px;
  padding: 16px 18px;
  cursor: pointer;
  transition: .16s;
}

.ext-card:hover, .ext-card.active {
  background: rgba(255, 255, 255, .11);
  border-color: var(--orange);
}

.ext-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.ext-card strong {
  font-size: .95rem;
  color: #fff;
}

.ext-card p {
  font-size: .83rem;
  color: #B9C6DE;
  margin-top: 6px;
}

/* PASS Interactive Stepper */
.pass-box {
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--r-lg);
  padding: 24px;
}

.pass-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.pass-step-btn {
  background: rgba(255, 255, 255, .06);
  border: 1.5px solid rgba(255, 255, 255, .16);
  color: #fff;
  border-radius: 12px;
  padding: 12px 8px;
  text-align: center;
  cursor: pointer;
  transition: .16s;
}

.pass-step-btn b {
  display: block;
  font-size: 1.35rem;
  color: var(--orange);
  font-family: var(--display);
}

.pass-step-btn span {
  font-size: .72rem;
  color: #B9C6DE;
  font-weight: 600;
}

.pass-step-btn.active {
  background: var(--orange);
  border-color: var(--orange);
}

.pass-step-btn.active b, .pass-step-btn.active span {
  color: #fff;
}

/* Emergency Decision Simulator */
.sim-card {
  margin-top: 44px;
  background: #fff;
  color: var(--ink);
  border-radius: var(--r-lg);
  padding: 28px;
  box-shadow: var(--shadow-lg);
}

.sim-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 18px 0;
}

.sim-opt {
  text-align: left;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1.5px solid var(--line);
  background: #fff;
  font-family: var(--body);
  font-size: .92rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: .15s;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sim-opt:hover {
  border-color: var(--blue);
  background: var(--soft);
}

.sim-opt.correct {
  border-color: var(--green);
  background: var(--green-tint);
  color: #0F4C29;
  font-weight: 600;
}

.sim-opt.wrong {
  border-color: var(--red);
  background: var(--red-tint);
  color: #7A1E0E;
}

.sim-feedback {
  padding: 14px 16px;
  border-radius: 10px;
  font-size: .88rem;
  display: none;
  margin-top: 12px;
}

.sim-feedback.show {
  display: block;
}

/* ---------- Mobile Bottom Navigation Bar ---------- */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 68px;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--line);
  z-index: 120;
  grid-template-columns: repeat(3, 1fr);
  padding: 4px 8px;
  box-shadow: 0 -4px 20px rgba(20, 36, 58, .08);
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-family: var(--display);
  font-size: .68rem;
  font-weight: 600;
  color: var(--ink-3);
  text-decoration: none !important;
  border-radius: 10px;
}

.mobile-nav-item span.icon {
  font-size: 1.15rem;
  line-height: 1;
}

.mobile-nav-item.active {
  color: var(--blue);
  background: var(--blue-tint);
}

/* ---------- Footer ---------- */
footer.site {
  background: #14243A;
  color: #8FA0BC;
  padding: 44px 0;
  font-size: .84rem;
}

.fbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

/* ---------- Responsive Breakpoints ---------- */
@media (max-width: 980px) {
  .hero-grid, .risk-explorer, .psi-split {
    grid-template-columns: 1fr;
  }
  .flip-grid {
    grid-template-columns: 1fr 1fr;
  }
  .signs-grid, .eip-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 920px) {
  nav.main {
    display: none;
  }
  nav.main.open {
    display: flex;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 18px 24px;
    gap: 14px;
    border-bottom: 1px solid var(--line);
    align-items: flex-start;
    box-shadow: var(--shadow);
  }
  .menu-btn {
    display: grid;
    place-items: center;
    margin-left: auto;
  }
  .mobile-bottom-nav {
    display: grid;
  }
}

@media (max-width: 640px) {
  .sec {
    padding: 54px 0;
  }
  .wrap {
    padding: 0 18px;
  }
  .flip-grid, .signs-grid, .eip-grid {
    grid-template-columns: 1fr;
  }
  .pass-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .sim-card, .eip-container {
    padding: 20px;
  }
  .hotspot-pin {
    width: 34px;
    height: 34px;
    font-size: .76rem;
  }
}