:root {
  --maroon: #5e0a0a;
  --maroon-2: #7b1113;
  --maroon-3: #2a0505;
  --ink: #171717;
  --muted: #6c6868;
  --line: #ddd7d4;
  --paper: #f7f4f1;
  --cream: #eee8e3;
  --white: #fff;
  --green: #22745a;
  --amber: #b16a18;
  --blue: #315f83;
  --shadow: 0 24px 70px rgba(43, 17, 17, .12);
  --radius: 22px;
  --header: 82px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", Arial, sans-serif;
  line-height: 1.65;
}

body.no-scroll {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

img {
  max-width: 100%;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  font-family: "Segoe UI", Arial, sans-serif;
  letter-spacing: -.035em;
  line-height: 1.08;
}

p:last-child {
  margin-bottom: 0;
}

::selection {
  color: #fff;
  background: var(--maroon);
}

.skip-link {
  position: fixed;
  top: -60px;
  left: 20px;
  z-index: 999;
  padding: 10px 16px;
  color: #fff;
  background: var(--maroon);
  border-radius: 6px;
  transition: .2s;
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  height: var(--header);
  padding: 0 clamp(20px, 4vw, 70px);
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  background: rgba(247, 244, 241, .93);
  border-bottom: 1px solid rgba(94, 10, 10, .1);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-logo {
  width: 200px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--maroon);
  border-radius: 10px 10px 10px 2px;
  font: 800 22px/1 "Segoe UI", sans-serif;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14);
}

.brand b {
  display: block;
  font: 800 14px/1.1 "Segoe UI", sans-serif;
  letter-spacing: .02em;
  text-transform: uppercase;
}

.brand small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
}

.site-nav a {
  position: relative;
  color: #262626;
  font-size: 16px;
  font-weight: 600;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 50%;
  bottom: -5px;
  left: 50%;
  height: 2px;
  background: var(--maroon);
  transition: .25s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--maroon);
}

.site-nav a:hover::after,
.site-nav a.active::after {
  right: 0;
  left: 0;
}

.header-cta {
  display: inline-flex;
  gap: 20px;
  align-items: center;
  padding: 11px 16px;
  color: #fff;
  background: var(--maroon-2);
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
}

.header-cta:hover {
  background: var(--maroon);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  background: transparent;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 6px auto;
  background: var(--ink);
}

.hero {
  min-height: calc(100vh - var(--header));
  padding: clamp(70px, 9vw, 128px) clamp(24px, 7vw, 120px) 90px;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, .62fr);
  align-items: center;
  gap: clamp(50px, 7vw, 120px);
  overflow: hidden;
  color: #fff;
  background: linear-gradient(118deg, #190303 0%, #3d0708 47%, #680c0c 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: .19;
  background-image: linear-gradient(rgba(255, 255, 255, .1) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .08) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(to right, #000, transparent 82%);
}

.hero::after {
  content: "";
  position: absolute;
  width: 850px;
  height: 850px;
  right: -300px;
  top: -320px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(255, 255, 255, .025), 0 0 0 150px rgba(255, 255, 255, .02);
}

.hero-orbit {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 50%;
}

.orbit-one {
  width: 240px;
  height: 240px;
  left: -120px;
  bottom: -60px;
}

.orbit-two {
  width: 16px;
  height: 16px;
  left: 54%;
  top: 20%;
  background: #fff;
  box-shadow: 0 0 0 8px rgba(255, 255, 255, .08);
}

.hero-copy,
.hero-panel {
  position: relative;
  z-index: 2;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: #d8b6b4;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 34px;
  height: 1px;
  background: #e5c4c1;
}

.hero h1 {
  max-width: 880px;
  margin-bottom: 26px;
  font-size: clamp(44px, 5.9vw, 88px);
  font-weight: 600;
  letter-spacing: -.065em;
}

.hero h1 em {
  display: block;
  color: #ead0c9;
  font-style: normal;
}

.hero-copy>p {
  max-width: 730px;
  margin-bottom: 34px;
  color: #d9c9c7;
  font-size: clamp(16px, 1.35vw, 20px);
}

.hero-actions,
.capstone-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  min-height: 50px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  transition: transform .2s, background .2s, border .2s;
}

.button:hover {
  transform: translateY(-2px);
}

.button-light {
  color: var(--maroon);
  background: #fff;
}

.button-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, .34);
  background: rgba(255, 255, 255, .04);
}

.button-ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, .08);
}

.button-maroon {
  color: #fff;
  background: var(--maroon);
}

.button-dark {
  color: #fff;
  background: var(--ink);
}

.button-maroon.button-dark {
  color: #fff;
  background: var(--maroon);
}

.hero-proof {
  max-width: 760px;
  margin-top: 54px;
  padding-top: 26px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, .16);
}

.hero-proof div {
  padding: 0 18px;
  border-left: 1px solid rgba(255, 255, 255, .14);
}

.hero-proof div:first-child {
  padding-left: 0;
  border-left: 0;
}

.hero-proof b {
  display: block;
  font: 700 clamp(22px, 2vw, 30px)/1 "Segoe UI", sans-serif;
}

.hero-proof span {
  display: block;
  margin-top: 7px;
  color: #baaaa8;
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero-panel {
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 20px;
  background: rgba(20, 0, 0, .36);
  box-shadow: 0 34px 100px rgba(0, 0, 0, .34);
  backdrop-filter: blur(18px);
}

.panel-topline {
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #cbb2b0;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.panel-topline i {
  padding: 5px 7px;
  color: #e5f3e9;
  background: rgba(76, 167, 114, .18);
  border: 1px solid rgba(112, 205, 151, .25);
  border-radius: 4px;
  font-size: 8px;
  font-style: normal;
}

.rate-card {
  padding: 22px;
  color: var(--ink);
  background: #fff;
  border-radius: 13px;
}

.rate-heading,
.rate-row,
.rate-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
}

.rate-heading {
  padding-bottom: 16px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--line);
}

.rate-heading span {
  font-weight: 800;
}

.rate-heading strong {
  padding: 4px 8px;
  color: var(--maroon);
  background: #f4e9e8;
  border-radius: 5px;
  font-size: 11px;
}

.rate-row {
  padding: 11px 0;
  border-bottom: 1px dashed #ded9d6;
  color: #655f5c;
  font-size: 12px;
}

.rate-row span {
  display: flex;
  align-items: center;
  gap: 9px;
}

.rate-row b {
  color: #302b2a;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.dot.material {
  background: var(--maroon);
}

.dot.labour {
  background: var(--blue);
}

.dot.plant {
  background: var(--amber);
}

.dot.risk {
  background: var(--green);
}

.rate-total {
  padding-top: 18px;
  color: var(--maroon);
}

.rate-total span {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.rate-total b {
  font: 800 22px/1 "Segoe UI", sans-serif;
}

.formula-strip {
  margin-top: 12px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #e8cfcd;
  background: rgba(255, 255, 255, .07);
  border-radius: 8px;
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.formula-strip b {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--green);
  border-radius: 50%;
}

.panel-note {
  margin: 16px 4px 2px;
  color: #bda9a7;
  font-size: 11px;
  line-height: 1.55;
}

.hero-scroll {
  position: absolute;
  left: clamp(24px, 7vw, 120px);
  bottom: 24px;
  z-index: 3;
  color: #9f8886;
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hero-scroll span {
  margin-left: 10px;
  color: #fff;
}

.section {
  padding: clamp(80px, 9vw, 140px) clamp(24px, 7vw, 120px);
}

.section-head {
  margin-bottom: 55px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .5fr);
  align-items: end;
  gap: 50px;
}

.section-head h2,
.units-copy h2,
.capstone-copy h2 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(36px, 4vw, 62px);
}

.section-head>p {
  margin: 0;
  color: var(--muted);
}

.section-kicker {
  margin-bottom: 18px;
  color: var(--maroon);
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.principle-card {
  min-height: 310px;
  padding: 30px;
  position: relative;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: .25s;
}

.principle-card:hover {
  z-index: 2;
  background: #fff;
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}

.card-no {
  color: var(--maroon);
  font: 800 11px/1 "Segoe UI", sans-serif;
}

.principle-card h3 {
  margin: 65px 0 13px;
  font-size: 27px;
}

.principle-card p {
  color: var(--muted);
  font-size: 13px;
}

.principle-card b {
  margin-top: auto;
  color: var(--maroon);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.curriculum-section {
  color: #fff;
  background: var(--ink);
}

.section-head.light p {
  color: #a7a2a2;
}

.section-head.light .section-kicker {
  color: #c89e9b;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--maroon);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.text-link.light {
  color: #fff;
}

.curriculum-list {
  border-top: 1px solid #3a3737;
}

.curriculum-row {
  padding: 28px 16px;
  display: grid;
  grid-template-columns: 65px 1fr auto 30px;
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid #3a3737;
  transition: .25s;
}

.curriculum-row:hover {
  padding-left: 28px;
  background: #211f1f;
}

.curriculum-index {
  color: #a46362;
  font: 700 18px/1 "Segoe UI", sans-serif;
}

.curriculum-row small {
  display: block;
  margin-bottom: 5px;
  color: #817d7d;
  font-size: 9px;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.curriculum-row h3 {
  margin: 0 0 5px;
  font-size: clamp(19px, 2vw, 27px);
}

.curriculum-row p {
  margin: 0;
  color: #aaa5a5;
  font-size: 12px;
}

.curriculum-row>b {
  padding: 6px 10px;
  color: #b78b88;
  border: 1px solid #504949;
  border-radius: 20px;
  font-size: 9px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.curriculum-row>i {
  color: #a46261;
  font-style: normal;
  font-size: 20px;
}

.units-section {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(420px, .8fr);
  gap: clamp(50px, 8vw, 130px);
  align-items: center;
  background: #fff;
}

.units-copy p {
  max-width: 650px;
  margin: 28px 0 32px;
  color: var(--muted);
  font-size: 16px;
}

.unit-board {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.unit-top {
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  color: #fff;
  background: var(--maroon);
  font-size: 12px;
}

.unit-top b {
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.unit-formula {
  padding: 12px 24px;
  background: #fff;
}

.unit-formula div {
  padding: 16px 0;
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #ece8e5;
}

.unit-formula small {
  color: var(--muted);
}

.unit-formula strong {
  font-size: 12px;
}

.unit-formula span {
  color: var(--maroon);
  font-size: 12px;
  font-weight: 800;
  text-align: right;
}

.unit-result {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  color: #fff;
  background: var(--ink);
}

.unit-board>p {
  padding: 18px 24px 22px;
  margin: 0;
  color: var(--muted);
  background: #f7f3f0;
  font-size: 11px;
}

.tender-types-section {
  background: var(--cream);
}

.type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.type-card {
  min-height: 360px;
  padding: 32px;
  background: #fff;
  border: 1px solid #e0d9d5;
  border-radius: 12px;
  transition: .25s;
}

.type-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 24px 50px rgba(55, 24, 24, .08);
}

.type-card.featured {
  color: #fff;
  background: var(--maroon);
  border-color: var(--maroon);
}

.type-card>span {
  display: block;
  margin-bottom: 68px;
  color: var(--maroon);
  font: 800 11px/1 "Segoe UI", sans-serif;
}

.type-card.featured>span {
  color: #dcbab7;
}

.type-card h3 {
  font-size: 25px;
}

.type-card p {
  color: var(--muted);
  font-size: 13px;
}

.type-card.featured p {
  color: #dbc5c3;
}

.type-card ul {
  padding: 18px 0 0;
  margin: 18px 0 0;
  list-style: none;
  border-top: 1px solid #e9e4e1;
}

.type-card.featured ul {
  border-color: rgba(255, 255, 255, .18);
}

.type-card li {
  padding: 4px 0;
  font-size: 11px;
}

.type-card li::before {
  content: "—";
  margin-right: 8px;
  color: var(--maroon);
}

.type-card.featured li::before {
  color: #e0bdb9;
}

.capstone-section {
  background: #fff;
}

.capstone-card {
  padding: clamp(35px, 5vw, 76px);
  display: grid;
  grid-template-columns: 1fr minmax(420px, .75fr);
  gap: clamp(50px, 8vw, 120px);
  color: #fff;
  background: linear-gradient(120deg, #4e0808, #7c1010);
  border-radius: 24px;
  box-shadow: 0 30px 80px rgba(94, 10, 10, .2);
}

.capstone-copy .section-kicker {
  color: #dbb4b0;
}

.capstone-copy p {
  max-width: 600px;
  margin: 26px 0 30px;
  color: #dec8c5;
}

.pack-list {
  padding: 0;
  margin: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, .18);
}

.pack-list li {
  padding: 18px 0;
  display: flex;
  align-items: center;
  gap: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, .18);
}

.pack-list li>span {
  color: #d6aaa7;
  font: 800 10px/1 "Segoe UI", sans-serif;
}

.pack-list b,
.pack-list small {
  display: block;
}

.pack-list b {
  font-size: 13px;
}

.pack-list small {
  margin-top: 4px;
  color: #c7abaa;
  font-size: 10px;
}

.site-footer {
  padding: 65px clamp(24px, 7vw, 120px) 28px;
  display: grid;
  grid-template-columns: 1.4fr .65fr .65fr 1fr;
  gap: 50px;
  color: #b7b1b1;
  background: var(--maroon);
}

.footer-brand {
  color: #fff;
}

.footer-brand small {
  color: #f5f5f5;
}

.site-footer>div>p {
  max-width: 380px;
  margin-top: 18px;
  font-size: 16px;
}

.site-footer>div>b {
  display: block;
  margin-bottom: 18px;
  color: #fff;
  font: 800 16px/1 "Segoe UI", sans-serif;
  text-transform: uppercase;
  letter-spacing: .1em;
}

.site-footer>div>a:not(.brand) {
  display: block;
  margin: 7px 0;
  font-size: 15px;
}

.site-footer>div>a:hover {
  color: #fff;
}

.copyright {
  padding-top: 28px;
  grid-column: 1 / -1;
  border-top: 1px solid #2b2828;
  font-size: 9px;
  letter-spacing: .05em;
}

/* Shared internal page shell */
.page-hero {
  padding: 76px clamp(24px, 7vw, 120px) 64px;
  color: #fff;
  background:
    linear-gradient(rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.75)),
    url("../../images/cost-accounting-insight.png") left/cover no-repeat;
}

.page-hero .breadcrumb {
  margin-bottom: 24px;
  color: #f5f5f5;
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.page-hero h1 {
  max-width: 980px;
  margin-bottom: 20px;
  font-size: clamp(42px, 5.5vw, 78px);
}

.page-hero p {
  max-width: 760px;
  color: #f5f5f5;
  font-size: 16px;
}

.page-hero-meta {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-hero-meta span {
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 6px;
  font-size: 9px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* Course application */
.course-body {
  background: #f3f0ed;
}

.course-header {
  position: fixed;
  right: 0;
  left: 0;
}

.course-shell {
  min-height: 100vh;
  padding-top: var(--header);
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
}

.course-sidebar {
  height: calc(100vh - var(--header));
  position: sticky;
  top: var(--header);
  overflow-y: auto;
  color: #ded7d4;
  background: var(--maroon);
  border-right: 1px solid #292626;
}

.course-progress {
  padding: 24px;
  border-bottom: 1px solid #332f2f;
}

.course-progress-head {
  margin-bottom: 9px;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.progress-track {
  height: 5px;
  overflow: hidden;
  background: var(--maroon-2);
  border-radius: 10px;
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: #ffffff;
  border-radius: inherit;
  transition: width .35s;
}

.course-search-wrap {
  padding: 17px;
  position: sticky;
  top: 0;
  z-index: 3; 
}

.course-search {
  width: 100%;
  padding: 10px 12px;
  color: #262626;
  background: #ffffff;
  border: 1px solid #3b3636;
  border-radius: 50px;
  outline: 0;
  font-size: 11px;
}

.course-search:focus {
  border-color: #8c3f3f;
}

.course-nav-group h3 {
  padding: 19px 20px 9px;
  margin: 0;
  color: #ffffff;
  font: 800 10px/1 "Segoe UI", sans-serif;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.lesson-nav-button {
  width: 100%;
  padding: 12px 17px;
  display: grid;
  grid-template-columns: 27px 1fr 18px;
  align-items: center;
  gap: 8px;
  color: #dfdfdf;
  background: transparent;
  border: 0;
  border-left: 3px solid transparent;
  text-align: left;
  cursor: pointer;
}

.lesson-nav-button:hover {
  color: #fff;
  background: var(--maroon-2);
}

.lesson-nav-button.active {
  color: #fff;
  background: var(--maroon-2);
  border-left-color: #c65353;
}

.lesson-nav-button .nav-index {
  color: #f5f5f5;
  font-size: 10px;
}

.lesson-nav-button .nav-title {
  font-size: 11px;
  line-height: 1.35;
}

.lesson-nav-button .nav-status {
  width: 14px;
  height: 14px;
  display: grid;
  place-items: center;
  border: 1px solid #ffffff;
  border-radius: 50%;
  font-size: 8px;
}

.lesson-nav-button.complete .nav-status {
  color: var(--maroon);
  background: var(--white);
  border-color: var(--white);
}

.course-main {
  min-width: 0;
  padding: 0 clamp(26px, 6vw, 96px) 100px;
}

.lesson-banner {
  margin: 0 calc(-1 * clamp(26px, 6vw, 96px)) 52px;
  padding: 58px clamp(26px, 6vw, 96px);
  color: #fff;
  background:
    linear-gradient(rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.75)),
    url("../../images/cost-accounting-insight.png") left/cover no-repeat;
}

.lesson-label {
  display: block;
  margin-bottom: 18px;
  color: #f5f5f5;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.lesson-banner h1 {
  max-width: 920px;
  margin-bottom: 17px;
  font-size: clamp(38px, 4.4vw, 66px);
}

.lesson-banner p {
  max-width: 800px;
  color: #f5f5f5;
  font-size: 15px;
}

.lesson-meta {
  margin-top: 25px;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.lesson-meta span {
  padding: 6px 9px;
  color: #e6d4d2;
  background: rgba(255, 255, 255, .08);
  border-radius: 4px;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.lesson-content {
  max-width: 1040px;
}

.lesson-content>section {
  margin: 0 0 32px;
  padding: clamp(24px, 4vw, 42px);
  background: #fff;
  border: 1px solid #e1dcda;
  border-radius: 14px;
}

.lesson-content h2 {
  margin-bottom: 17px;
  font-size: clamp(25px, 3vw, 37px);
}

.lesson-content h3 {
  margin: 27px 0 12px;
  color: var(--maroon);
  font-size: 20px;
}

.lesson-content h4 {
  margin: 23px 0 9px;
  font-size: 15px;
}

.lesson-content p,
.lesson-content li {
  color: #585252;
  font-size: 14px;
}

.lesson-content strong {
  color: #2b2727;
}

.lesson-content ul,
.lesson-content ol {
  padding-left: 20px;
}

.lesson-content li {
  margin: 7px 0;
}

.learning-objectives {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.objective {
  padding: 15px;
  display: flex;
  gap: 11px;
  align-items: flex-start;
  background: #f6f2ef;
  border-radius: 8px;
}

.objective b {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--maroon);
  border-radius: 50%;
  font-size: 9px;
}

.objective span {
  color: #544e4d;
  font-size: 12px;
}

.formula-box {
  margin: 20px 0;
  padding: 22px;
  color: #fff;
  background: var(--maroon);
  border-left: 5px solid #b84444;
  border-radius: 8px;
}

.formula-box small {
  display: block;
  margin-bottom: 8px;
  color: #a8a2a1;
  font-size: 9px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.formula-box strong {
  display: block;
  color: #fff;
  font: 700 clamp(16px, 2vw, 22px)/1.4 "Segoe UI", sans-serif;
  letter-spacing: -.02em;
}

.formula-box p {
  margin-top: 10px;
  color: #bdb7b6;
  font-size: 11px;
}

.callout {
  margin: 20px 0;
  padding: 17px 19px;
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 12px;
  border-radius: 8px;
}

.callout.info {
  background: #edf3f7;
  border: 1px solid #d3e0e8;
}

.callout.warn {
  background: #fff5e8;
  border: 1px solid #eddab9;
}

.callout.success {
  background: #eaf6f1;
  border: 1px solid #cee5da;
}

.callout.danger {
  background: #f9ebeb;
  border: 1px solid #e8cece;
}

.callout>b {
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 50%;
  font-size: 11px;
}

.callout.warn>b {
  background: var(--amber);
}

.callout.success>b {
  background: var(--green);
}

.callout.danger>b {
  background: var(--maroon);
}

.callout p {
  margin: 0;
  font-size: 12px;
}

.table-wrap {
  margin: 20px 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.lesson-table,
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.lesson-table th,
.lesson-table td,
.data-table th,
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid #e7e1de;
  vertical-align: top;
  text-align: left;
}

.lesson-table th,
.data-table th {
  color: #fff;
  background: var(--maroon);
  font-size: 9px;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.lesson-table tr:last-child td,
.data-table tr:last-child td {
  border-bottom: 0;
}

.lesson-table tbody tr:nth-child(even),
.data-table tbody tr:nth-child(even) {
  background: #faf8f7;
}

.lesson-table td.num,
.lesson-table th.num,
.data-table td.num,
.data-table th.num {
  text-align: right;
  white-space: nowrap;
}

.step-list {
  padding: 0 !important;
  margin: 22px 0 !important;
  list-style: none;
  counter-reset: process;
}

.step-list li {
  min-height: 56px;
  padding: 0 0 22px 54px;
  position: relative;
  border-left: 1px solid #d8cfcc;
  counter-increment: process;
}

.step-list li:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.step-list li::before {
  content: counter(process);
  width: 32px;
  height: 32px;
  position: absolute;
  left: -17px;
  top: -3px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--maroon);
  border: 5px solid #fff;
  border-radius: 50%;
  font-size: 9px;
  font-weight: 800;
}

.step-list li strong {
  display: block;
  margin-bottom: 4px;
}

.worked-example {
  margin: 24px 0;
  overflow: hidden;
  border: 1px solid #cfc5c2;
  border-radius: 10px;
}

.worked-example>header {
  padding: 17px 20px;
  color: #fff;
  background: var(--maroon);
}

.worked-example>header small {
  display: block;
  color: #d9b9b7;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: .09em;
}

.worked-example>header h3 {
  margin: 5px 0 0;
  color: #fff;
  font-size: 19px;
}

.worked-example .example-body {
  padding: 22px;
  background: #fcfaf9;
}

.example-result {
  padding: 16px 19px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  background: var(--ink);
}

.example-result span {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.example-result b {
  color: #fff;
  font: 800 19px/1 "Segoe UI", sans-serif;
}

.definition-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.definition-card {
  padding: 17px;
  background: #f7f4f2;
  border: 1px solid #e6dfdc;
  border-radius: 8px;
}

.definition-card b {
  display: block;
  margin-bottom: 6px;
  color: var(--maroon);
  font-size: 12px;
}

.definition-card p {
  font-size: 11px;
}

.mini-quiz {
  padding: 25px;
  background: #f6eeed;
  border: 1px solid #ead9d7;
  border-radius: 10px;
}

.mini-quiz h3 {
  margin-top: 0;
}

.quiz-option {
  width: 100%;
  margin: 7px 0;
  padding: 12px 14px;
  display: block;
  color: #433e3d;
  background: #fff;
  border: 1px solid #d9d0cd;
  border-radius: 50px;
  text-align: left;
  cursor: pointer;
}

.quiz-option:hover {
  border-color: var(--maroon);
}

.quiz-option.correct {
  color: #175440;
  background: #e8f5ef;
  border-color: #8dc2ae;
}

.quiz-option.wrong {
  color: #742323;
  background: #f8eaea;
  border-color: #d7a7a7;
}

.quiz-feedback {
  margin-top: 10px;
  font-size: 11px;
  font-weight: 700;
}

.lesson-footer-nav {
  max-width: 1040px;
  margin-top: 40px;
  display: flex;
  justify-content: space-between;
  gap: 15px;
}

.lesson-nav-link {
  max-width: 47%;
  padding: 15px 18px;
  display: flex;
  flex-direction: column;
  color: #fff;
  background: #010101;
  border: 0; 
  cursor: pointer;
  text-align: left;
}

.lesson-nav-link.next {
  margin-left: auto;
  text-align: right;
}

.lesson-nav-link small {
  color: #f5f5f5;
  font-size: 8px;
  text-transform: uppercase;
  letter-spacing: .09em;
}

.lesson-nav-link b {
  margin-top: 4px;
  font-size: 11px;
}

.complete-lesson {
  margin: 28px 0;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: #fff;
  border: 1px solid #ded8d5;
  border-radius: 9px;
}

.complete-lesson p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.course-menu-button {
  display: none;
}

/* Calculators */
.tools-layout {
  padding: 65px clamp(24px, 7vw, 120px) 100px;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 38px;
  align-items: start;
}

.tools-nav {
  position: sticky;
  top: calc(var(--header) + 22px);
  padding: 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.tool-tab {
  width: 100%;
  padding: 12px 13px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #5b5553;
  background: transparent;
  border: 0;
  border-radius: 7px;
  text-align: left;
  font-size: 11px;
  cursor: pointer;
}

.tool-tab:hover {
  background: #f7f2ef;
}

.tool-tab.active {
  color: #fff;
  background: var(--maroon);
}

.tool-tab b {
  width: 21px;
  color: inherit;
  font-size: 9px;
}

.tool-panel {
  display: none;
}

.tool-panel.active {
  display: block;
}

.tool-heading {
  margin-bottom: 25px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 25px;
}

.tool-heading h2 {
  margin-bottom: 8px;
  font-size: clamp(28px, 3vw, 42px);
}

.tool-heading p {
  max-width: 690px;
  color: var(--muted);
  font-size: 13px;
}

.tool-badge {
  min-width: max-content;
  padding: 6px 9px;
  color: var(--maroon);
  background: #f1e5e4;
  border-radius: 5px;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.calculator-card {
  padding: clamp(22px, 4vw, 40px);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 18px 50px rgba(53, 29, 29, .06);
}

.calc-section {
  padding: 0 0 27px;
  margin-bottom: 27px;
  border-bottom: 1px solid #e7e0dd;
}

.calc-section:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.calc-section h3 {
  margin-bottom: 16px;
  font-size: 18px;
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.calc-grid.two {
  grid-template-columns: repeat(2, 1fr);
}

.calc-grid.four {
  grid-template-columns: repeat(4, 1fr);
}

.field label {
  display: block;
  margin-bottom: 6px;
  color: #655f5d;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  color: #2b2827;
  background: #faf8f7;
  border: 1px solid #d9d1ce;
  border-radius: 6px;
  outline: 0;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--maroon);
  box-shadow: 0 0 0 3px rgba(94, 10, 10, .08);
}

.field small {
  display: block;
  margin-top: 5px;
  color: #918a87;
  font-size: 9px;
  line-height: 1.35;
}

.input-prefix {
  position: relative;
}

.input-prefix>span {
  position: absolute;
  left: 10px;
  top: 10px;
  color: #857e7b;
  font-size: 12px;
}

.input-prefix input {
  padding-left: 27px;
}

.calc-results {
  margin-top: 24px;
  padding: 22px;
  color: #fff;
  background: var(--maroon);
  border-radius: 10px;
}

.calc-results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.result-cell {
  padding: 13px;
  border: 1px solid var(--maroon-2);
  border-radius: 7px;
}

.result-cell small {
  display: block;
  margin-bottom: 5px;
  color: #f5f5f5;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.result-cell b {
  display: block;
  color: #fff;
  font: 800 clamp(15px, 2vw, 20px)/1.2 "Segoe UI", sans-serif;
}

.result-cell.highlight {
  background: var(--maroon-2);
}

.result-cell.highlight small {
  color: #f5f5f5;
}

.result-full {
  margin-top: 12px;
  padding-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid #3e3939;
}

.result-full span {
  color: #b9b2b0;
  font-size: 11px;
}

.result-full b {
  color: #fff;
  font: 800 24px/1 "Segoe UI", sans-serif;
}

.calc-note {
  margin-top: 14px;
  color: #262626;
  font-size: 12px;
}

.resource-row {
  padding: 12px 0;
  display: grid;
  grid-template-columns: 1.2fr .7fr .7fr .7fr 34px;
  align-items: end;
  gap: 9px;
  border-bottom: 1px dashed #ddd5d2;
}

.remove-row {
  width: 34px;
  height: 42px;
  color: #8c3434;
  background: #f5e8e8;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}

.add-row {
  margin-top: 13px;
  padding: 8px 12px;
  color: var(--maroon);
  background: #f3e6e5;
  border: 0;
  border-radius: 5px;
  font-size: 10px;
  font-weight: 800;
  cursor: pointer;
}

/* Case studies */
.case-filter {
  padding: 30px clamp(24px, 7vw, 120px) 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-button {
  padding: 8px 12px;
  color: #5e5755;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  font-size: 10px;
  cursor: pointer;
}

.filter-button.active,
.filter-button:hover {
  color: #fff;
  background: var(--maroon);
  border-color: var(--maroon);
}

.case-grid {
  padding: 35px clamp(24px, 7vw, 120px) 100px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.case-card {
  padding: 25px;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  transition: .25s;
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 24px 55px rgba(51, 25, 25, .1);
}

.case-card .case-type {
  display: flex;
  justify-content: space-between;
  color: var(--maroon);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.case-card h3 {
  margin: 50px 0 12px;
  font-size: 23px;
}

.case-card p {
  color: var(--muted);
  font-size: 12px;
}

.case-card footer {
  padding-top: 17px;
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid #e7e0dd;
}

.case-card footer span {
  color: #827a78;
  font-size: 9px;
}

.case-card footer b {
  color: var(--maroon);
  font-size: 11px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: none;
  align-items: flex-start;
  justify-content: center;
  overflow-y: auto;
  padding: 40px 20px;
  background: rgba(12, 7, 7, .76);
  backdrop-filter: blur(8px);
}

.modal.open {
  display: flex;
}

.modal-dialog {
  width: min(1050px, 100%);
  position: relative;
  background: #f7f4f1;
  border-radius: 15px;
  box-shadow: 0 40px 120px rgba(0, 0, 0, .4);
}

.modal-close {
  width: 38px;
  height: 38px;
  position: sticky;
  top: 12px;
  z-index: 5;
  float: right;
  margin: 12px 12px -50px 0;
  color: #fff;
  background: rgba(0, 0, 0, .28);
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 50%;
  cursor: pointer;
}

.case-modal-head {
  padding: 45px 50px;
  color: #fff;
  background: linear-gradient(120deg, #490707, #791010);
  border-radius: 15px 15px 0 0;
}

.case-modal-head span {
  color: #d2aaa7;
  font-size: 9px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.case-modal-head h2 {
  max-width: 800px;
  margin: 10px 0 13px;
  font-size: clamp(30px, 4vw, 50px);
}

.case-modal-head p {
  max-width: 780px;
  color: #dbc5c2;
}

.case-modal-body {
  padding: 45px 50px 60px;
}

.case-modal-body h3 {
  margin: 32px 0 12px;
  color: var(--maroon);
  font-size: 21px;
}

.case-modal-body h3:first-child {
  margin-top: 0;
}

.case-modal-body p,
.case-modal-body li {
  color: #5e5755;
  font-size: 13px;
}

/* Templates */
.template-layout {
  min-height: 700px;
  padding: 60px clamp(24px, 5vw, 80px) 100px;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 30px;
}

.template-list {
  padding: 10px;
  align-self: start;
  position: sticky;
  top: calc(var(--header) + 20px);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.template-option {
  width: 100%;
  padding: 12px;
  display: flex;
  gap: 11px;
  align-items: center;
  color: #5a5452;
  background: transparent;
  border: 0;
  border-radius: 6px;
  text-align: left;
  cursor: pointer;
}

.template-option:hover {
  background: #f6f1ef;
}

.template-option.active {
  color: #fff;
  background: var(--maroon);
}

.template-option span {
  width: 22px;
  font-size: 9px;
  font-weight: 800;
}

.template-option b {
  font-size: 11px;
}

.template-workspace {
  min-width: 0;
}

.template-toolbar {
  margin-bottom: 13px;
  padding: 13px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.template-toolbar div {
  display: flex;
  gap: 8px;
}

.small-button {
  padding: 8px 11px;
  color: #fff;
  background: var(--ink);
  border: 0;
  border-radius: 5px;
  font-size: 9px;
  font-weight: 800;
  cursor: pointer;
}

.small-button.maroon {
  background: var(--maroon);
}

.small-button.light {
  color: var(--maroon);
  background: #f0e3e2;
}

.template-sheet {
  min-height: 720px;
  padding: clamp(25px, 5vw, 60px);
  background: #fff;
  border: 1px solid #dcd4d1;
  box-shadow: 0 20px 60px rgba(55, 29, 29, .09);
}

.sheet-header {
  margin-bottom: 35px;
  padding-bottom: 20px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  border-bottom: 3px solid var(--maroon);
}

.sheet-header h2 {
  margin: 0;
  color: var(--maroon);
  font-size: 28px;
}

.sheet-header p {
  margin: 5px 0 0;
  color: #7c7472;
  font-size: 10px;
}

.sheet-header span {
  color: #8d8583;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.sheet-instructions {
  margin-bottom: 20px;
  padding: 14px 16px;
  color: #655f5d;
  background: #f7f2ef;
  border-left: 4px solid var(--maroon);
  font-size: 10px;
}

.editable-table td[contenteditable="true"] {
  min-width: 80px;
  outline: 0;
}

.editable-table td[contenteditable="true"]:focus {
  background: #fff4d8;
  box-shadow: inset 0 0 0 2px #d8ac53;
}

.template-empty {
  padding: 80px 20px;
  color: #8a8381;
  text-align: center;
}

/* Resources */
.resource-layout {
  padding: 65px clamp(24px, 7vw, 120px) 110px;
}

.resource-section {
  margin-bottom: 75px;
  scroll-margin-top: 110px;
}

.resource-section-head {
  margin-bottom: 28px;
  display: grid;
  grid-template-columns: 1fr minmax(280px, .45fr);
  gap: 30px;
  align-items: end;
}

.resource-section-head h2 {
  margin: 0;
  font-size: clamp(30px, 3.5vw, 48px);
}

.resource-section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.formula-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.formula-card {
  min-height: 190px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  color: #fff;
  background: var(--maroon);
  border-radius: 10px;
}

.formula-card span {
  color: #f5f5f5;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .09em;
}

.formula-card strong {
  margin: 35px 0 12px;
  color: #fff;
  font: 700 15px/1.5 "Segoe UI", sans-serif;
}

.formula-card small {
  margin-top: auto;
  color: #f5f5f5;
  font-size: 10px;
}

.glossary-controls {
  margin-bottom: 20px;
  display: flex;
  gap: 10px;
}

.glossary-controls input {
  flex: 1;
  padding: 12px 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
  outline: 0;
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.glossary-item {
  padding: 17px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.glossary-item b {
  display: block;
  margin-bottom: 5px;
  color: var(--maroon);
  font-size: 12px;
}

.glossary-item p {
  color: #6f6866;
  font-size: 10px;
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
}

.checklist-card {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.checklist-card h3 {
  font-size: 20px;
}

.check-item {
  padding: 9px 0;
  display: flex;
  gap: 10px;
  border-bottom: 1px solid #eee9e7;
  color: #625b59;
  font-size: 11px;
}

.check-item input {
  accent-color: var(--maroon);
}

.sources-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 11px;
}

.source-link {
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.source-link:hover {
  border-color: var(--maroon);
}

.source-link b {
  display: block;
  font-size: 11px;
}

.source-link small {
  display: block;
  margin-top: 4px;
  color: #817a77;
  font-size: 9px;
}

.source-link span {
  color: var(--maroon);
}

.legal-banner {
  margin-bottom: 35px;
  padding: 22px;
  color: #fff;
  background: var(--maroon);
  border-radius: 10px;
}

.legal-banner b {
  display: block;
  margin-bottom: 6px;
}

.legal-banner p {
  color: #dec6c3;
  font-size: 11px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.delay-1 {
  transition-delay: .08s;
}

.delay-2 {
  transition-delay: .16s;
}

.delay-3 {
  transition-delay: .24s;
}

.hide {
  display: none !important;
}

@media (max-width: 1180px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
  }

  .site-nav {
    gap: 14px;
  }

  .site-nav a {
    font-size: 11px;
  }

  .header-cta {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr .58fr;
    gap: 45px;
  }

  .hero h1 {
    font-size: clamp(44px, 6vw, 72px);
  }

  .principles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .type-grid,
  .case-grid,
  .formula-grid,
  .glossary-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer {
    grid-template-columns: 1.3fr 1fr 1fr;
  }

  .site-footer>div:last-of-type {
    grid-column: 1 / -1;
  }

  .calc-grid.four {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  :root {
    --header: 70px;
  }

  .site-header {
    grid-template-columns: 1fr auto;
    padding: 0 20px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: var(--header) 0 auto;
    padding: 18px 20px 28px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: #f7f4f1;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(0, 0, 0, .12);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 9px 0;
    font-size: 13px;
  }

  .site-nav a::after {
    display: none;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .hero-panel {
    max-width: 560px;
  }

  .hero-scroll {
    display: none;
  }

  .section-head,
  .units-section,
  .capstone-card,
  .resource-section-head {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: start;
    gap: 18px;
  }

  .units-section {
    gap: 45px;
  }

  .capstone-card {
    gap: 45px;
  }

  .course-shell {
    grid-template-columns: 1fr;
  }

  .course-sidebar {
    width: min(340px, 90vw);
    height: calc(100vh - var(--header));
    position: fixed;
    z-index: 90;
    top: var(--header);
    left: 0;
    transform: translateX(-105%);
    transition: .3s;
  }

  .course-sidebar.open {
    transform: none;
    box-shadow: 20px 0 60px rgba(0, 0, 0, .35);
  }

  .course-menu-button {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 120;
    padding: 12px 15px;
    display: block;
    color: #fff;
    background: var(--maroon);
    border: 0;
    border-radius: 30px;
    box-shadow: 0 10px 30px rgba(94, 10, 10, .35);
    font-size: 10px;
    font-weight: 800;
  }

  .tools-layout,
  .template-layout {
    grid-template-columns: 1fr;
  }

  .tools-nav,
  .template-list {
    position: static;
    display: flex;
    overflow-x: auto;
  }

  .tool-tab,
  .template-option {
    min-width: max-content;
  }

  .tool-tab b,
  .template-option span {
    display: none;
  }

  .case-modal-head,
  .case-modal-body {
    padding: 38px 28px;
  }
}

@media (max-width: 640px) {
  .brand small {
    display: none;
  }

  .hero {
    padding: 60px 22px 65px;
  }

  .hero h1 {
    font-size: 43px;
  }

  .hero-proof {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 0;
  }

  .hero-proof div:nth-child(3) {
    padding-left: 0;
    border-left: 0;
  }

  .section,
  .page-hero {
    padding-right: 20px;
    padding-left: 20px;
  }

  .section-head h2,
  .units-copy h2,
  .capstone-copy h2 {
    font-size: 34px;
  }

  .principles-grid,
  .type-grid,
  .case-grid,
  .formula-grid,
  .glossary-grid,
  .checklist-grid,
  .sources-list {
    grid-template-columns: 1fr;
  }

  .principle-card {
    min-height: 250px;
  }

  .principle-card h3 {
    margin-top: 42px;
  }

  .curriculum-row {
    grid-template-columns: 38px 1fr 20px;
    gap: 12px;
    padding: 22px 5px;
  }

  .curriculum-row>b {
    display: none;
  }

  .curriculum-row p {
    display: none;
  }

  .unit-formula div {
    grid-template-columns: 1fr;
  }

  .unit-formula span {
    text-align: left;
  }

  .unit-result {
    gap: 15px;
    flex-direction: column;
  }

  .capstone-card {
    padding: 30px 22px;
    border-radius: 15px;
  }

  .site-footer {
    grid-template-columns: 1fr 1fr;
    padding: 45px 20px 24px;
  }

  .site-footer>div:first-child,
  .site-footer>div:last-of-type {
    grid-column: 1 / -1;
  }

  .learning-objectives,
  .definition-grid,
  .calc-grid,
  .calc-grid.two,
  .calc-grid.four,
  .calc-results-grid {
    grid-template-columns: 1fr;
  }

  .course-main {
    padding: 0 16px 80px;
  }

  .lesson-banner {
    margin: 0 -16px 35px;
    padding: 45px 20px;
  }

  .lesson-content>section {
    padding: 23px 18px;
  }

  .lesson-footer-nav {
    flex-direction: column;
  }

  .lesson-nav-link {
    max-width: none;
    width: 100%;
  }

  .lesson-nav-link.next {
    margin-left: 0;
  }

  .tools-layout,
  .template-layout {
    padding-right: 16px;
    padding-left: 16px;
  }

  .resource-row {
    grid-template-columns: 1fr 1fr;
  }

  .resource-row .remove-row {
    grid-column: 2;
    justify-self: end;
  }

  .tool-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .case-grid {
    padding-right: 20px;
    padding-left: 20px;
  }

  .case-card h3 {
    margin-top: 35px;
  }

  .modal {
    padding: 0;
  }

  .modal-dialog {
    min-height: 100%;
    border-radius: 0;
  }

  .case-modal-head {
    border-radius: 0;
  }

  .template-sheet {
    padding: 25px 12px;
    overflow-x: auto;
  }

  .sheet-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }
}

@media print {

  .site-header,
  .site-footer,
  .template-list,
  .template-toolbar,
  .course-sidebar,
  .course-menu-button,
  .lesson-footer-nav,
  .complete-lesson {
    display: none !important;
  }

  body,
  .course-body {
    background: #fff;
  }

  .course-shell,
  .template-layout {
    display: block;
    padding: 0;
  }

  .course-main {
    padding: 0;
  }

  .lesson-banner {
    margin: 0 0 25px;
    padding: 30px;
  }

  .lesson-content {
    max-width: none;
  }

  .lesson-content>section,
  .template-sheet {
    break-inside: avoid;
    border: 0;
    box-shadow: none;
  }

  .template-sheet {
    padding: 0;
  }

  a[href]::after {
    content: none;
  }
}