@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700;900&family=Inter:wght@300;400;500;600&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-steel: #2B3A42;
  --color-aluminum: #8C9DA8;
  --color-white: #F4F4F4;
  --color-graphite: #1E1E1E;
  --color-mid: #4A5C66;
  --color-light-gray: #E8EAEB;
  --color-border: #D0D5D8;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', Arial, sans-serif;
  --max-width: 1140px;
  --reading-width: 720px;
  --radius: 3px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-white);
  color: var(--color-graphite);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-steel);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-mid);
}

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

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--color-graphite);
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.1rem; }

p {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: #333;
  max-width: 72ch;
}

ul, ol {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  line-height: 1.65;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4rem 0;
}

.section--dark {
  background-color: var(--color-steel);
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark p,
.section--dark li {
  color: var(--color-white);
}

.section--gray {
  background-color: #EDEEF0;
}

.section-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-aluminum);
  border-left: 3px solid var(--color-aluminum);
  padding-left: 0.6rem;
  margin-bottom: 1rem;
}

.section-title {
  margin-bottom: 1.25rem;
}

.section-intro {
  font-size: 1.05rem;
  color: #4A5256;
  margin-bottom: 2rem;
}

.divider {
  width: 48px;
  height: 3px;
  background-color: var(--color-steel);
  margin: 1.25rem 0 2rem;
}

.divider--light {
  background-color: var(--color-aluminum);
}

/* HEADER */
.site-header {
  background-color: var(--color-graphite);
  border-bottom: 3px solid var(--color-steel);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.01em;
}

.site-logo span {
  color: var(--color-aluminum);
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

.nav-list li { margin-bottom: 0; }

.nav-list a {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #B8C5CB;
  transition: color 0.2s;
}

.nav-list a:hover {
  color: var(--color-white);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: all 0.3s;
}

/* HERO */
.hero {
  background-color: var(--color-steel);
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27,38,44,0.9) 0%, rgba(43,58,66,0.7) 100%);
  z-index: 1;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-aluminum);
  border: 1px solid var(--color-aluminum);
  padding: 0.3rem 0.75rem;
  margin-bottom: 1.25rem;
}

.hero h1 {
  color: var(--color-white);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.hero-lead {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  color: #C5D0D6;
  line-height: 1.7;
  max-width: 52ch;
  margin-bottom: 2rem;
}

.hero-meta {
  font-size: 0.78rem;
  color: var(--color-aluminum);
  letter-spacing: 0.05em;
}

.hero-image-wrap {
  border: 1px solid rgba(140,157,168,0.3);
}

.hero-image-wrap img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
}

/* TAXONOMY TABLE */
.taxonomy-table-wrap {
  overflow-x: auto;
  margin-top: 1.5rem;
}

.taxonomy-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

.taxonomy-table thead {
  background-color: var(--color-steel);
  color: var(--color-white);
}

.taxonomy-table th {
  padding: 0.85rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.1);
}

.taxonomy-table td {
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-border);
  color: var(--color-graphite);
  vertical-align: top;
  line-height: 1.55;
}

.taxonomy-table tbody tr:nth-child(even) {
  background-color: #F0F2F3;
}

.taxonomy-table tbody tr:hover {
  background-color: #E4E9EC;
}

/* TWO-COLUMN SECTION */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.two-col--image-right .col-image {
  order: 2;
}

.col-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

/* QUIZ TEASER */
.quiz-teaser {
  background-color: var(--color-graphite);
  border-left: 5px solid var(--color-aluminum);
  padding: 3rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}

.quiz-teaser h3 {
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.quiz-teaser p {
  color: #A0ADB2;
  margin-bottom: 0;
  max-width: 55ch;
}

.quiz-teaser-img {
  width: 200px;
  height: 140px;
  object-fit: cover;
  border: 1px solid rgba(140,157,168,0.4);
}

/* BUTTONS */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.8rem 1.75rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  text-align: center;
  border-radius: var(--radius);
}

.btn--primary {
  background-color: var(--color-aluminum);
  color: var(--color-graphite);
  border-color: var(--color-aluminum);
}

.btn--primary:hover {
  background-color: transparent;
  color: var(--color-aluminum);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-aluminum);
}

.btn--outline:hover {
  background-color: var(--color-aluminum);
  color: var(--color-graphite);
}

.btn--dark {
  background-color: var(--color-steel);
  color: var(--color-white);
  border-color: var(--color-steel);
}

.btn--dark:hover {
  background-color: transparent;
  color: var(--color-steel);
}

/* ALLOY LIST */
.alloy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.alloy-item {
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-steel);
  padding: 1rem 1.25rem;
}

.alloy-item h4 {
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  font-family: var(--font-sans);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-steel);
}

.alloy-item p {
  font-size: 0.88rem;
  line-height: 1.55;
  color: #555;
  max-width: 100%;
}

/* ARTICLE CARDS */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
  margin-top: 1.5rem;
}

.article-card {
  border: 1px solid var(--color-border);
  background-color: #fff;
  overflow: hidden;
  transition: box-shadow 0.25s ease;
}

.article-card:hover {
  box-shadow: 0 4px 18px rgba(43,58,66,0.12);
}

.article-card-img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}

.article-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.article-card-meta {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-aluminum);
  margin-bottom: 0.5rem;
  display: block;
}

.article-card h4 {
  font-size: 1.05rem;
  margin-bottom: 0.6rem;
  font-family: var(--font-serif);
  line-height: 1.3;
}

.article-card p {
  font-size: 0.88rem;
  color: #555;
  margin-bottom: 1rem;
  max-width: 100%;
}

.article-card .read-more {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-steel);
  border-bottom: 1px solid var(--color-aluminum);
  padding-bottom: 1px;
}

/* FAQ ACCORDION */
.faq-list {
  margin-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 1.2rem 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-graphite);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: color 0.2s;
}

.faq-question:hover {
  color: var(--color-mid);
}

.faq-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--color-aluminum);
  transition: transform 0.3s, background 0.3s;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--color-steel);
  border-color: var(--color-steel);
  color: #fff;
}

.faq-answer {
  display: none;
  padding: 0 0 1.25rem;
}

.faq-answer p {
  font-size: 0.95rem;
  color: #444;
  max-width: 70ch;
}

.faq-item.active .faq-answer {
  display: block;
}

/* SOFT CTA */
.soft-cta {
  text-align: center;
  padding: 4rem 0;
  background-color: var(--color-steel);
}

.soft-cta h2 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.soft-cta p {
  color: #A8BAC2;
  margin: 0 auto 2rem;
  max-width: 55ch;
  text-align: center;
}

/* THERMAL SECTION */
.thermal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.thermal-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.stat-box {
  background-color: var(--color-steel);
  color: var(--color-white);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
}

.stat-box .stat-value {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-aluminum);
  display: block;
  line-height: 1.1;
}

.stat-box .stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #A8BAC2;
  margin-top: 0.25rem;
  display: block;
}

/* ELASTIC SECTION */
.elastic-wrap {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.elastic-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}

.elastic-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  padding-left: 1.25rem;
  position: relative;
  font-size: 0.95rem;
  color: var(--color-graphite);
}

.elastic-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background-color: var(--color-aluminum);
  border-radius: 50%;
}

.elastic-side-img img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

/* BREADCRUMB */
.breadcrumb {
  padding: 0.75rem 0;
  font-size: 0.78rem;
  color: var(--color-aluminum);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb a {
  color: var(--color-aluminum);
}

.breadcrumb a:hover {
  color: var(--color-steel);
}

.breadcrumb span { margin: 0 0.4rem; }

/* BLOG HUB */
.blog-hero {
  background-color: var(--color-steel);
  padding: 3.5rem 0;
}

.blog-hero h1 {
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.blog-hero p {
  color: #A8BAC2;
  max-width: 55ch;
}

.blog-hub-img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  margin-top: 2rem;
  border: 1px solid rgba(140,157,168,0.3);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2.5rem;
}

.blog-card {
  border: 1px solid var(--color-border);
  background: #fff;
  overflow: hidden;
  transition: box-shadow 0.25s;
}

.blog-card:hover {
  box-shadow: 0 6px 24px rgba(43,58,66,0.1);
}

.blog-card-img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  display: block;
}

.blog-card-body {
  padding: 1.5rem;
}

.blog-card-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-aluminum);
  display: block;
  margin-bottom: 0.5rem;
}

.blog-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
  line-height: 1.3;
}

.blog-card p {
  font-size: 0.88rem;
  color: #555;
  margin-bottom: 1rem;
  max-width: 100%;
}

.blog-card .read-more {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-steel);
  border-bottom: 1px solid var(--color-aluminum);
  padding-bottom: 1px;
}

/* ARTICLE PAGE */
.article-header {
  background-color: var(--color-steel);
  padding: 3.5rem 0 3rem;
}

.article-header h1 {
  color: var(--color-white);
  max-width: 18ch;
  margin-bottom: 1rem;
}

.article-header .article-meta {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.article-meta-item {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-aluminum);
}

.article-body {
  padding: 3.5rem 0;
}

.article-content {
  max-width: var(--reading-width);
}

.article-content h2 {
  font-size: 1.55rem;
  margin: 2.5rem 0 1rem;
  color: var(--color-steel);
}

.article-content h3 {
  font-size: 1.2rem;
  margin: 2rem 0 0.75rem;
  color: var(--color-graphite);
}

.article-content p {
  margin-bottom: 1.25rem;
  max-width: 70ch;
}

.article-content ul, .article-content ol {
  margin: 1rem 0 1.5rem;
}

.article-content li {
  font-size: 0.97rem;
}

.article-feature-img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border: 1px solid var(--color-border);
  margin-bottom: 2.5rem;
}

.article-sidebar {
  padding-top: 0.5rem;
}

.sidebar-box {
  background-color: #F0F2F3;
  border-left: 3px solid var(--color-steel);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.sidebar-box h4 {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-steel);
  margin-bottom: 1rem;
}

.sidebar-box ul {
  list-style: none;
  padding: 0;
}

.sidebar-box ul li {
  border-bottom: 1px solid var(--color-border);
  padding: 0.5rem 0;
  font-size: 0.88rem;
}

.sidebar-box ul li:last-child {
  border-bottom: none;
}

.sidebar-box ul li a {
  color: var(--color-graphite);
  font-size: 0.88rem;
}

.sidebar-box ul li a:hover {
  color: var(--color-mid);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  align-items: start;
}

/* QUIZ PAGE */
.quiz-hero {
  background-color: var(--color-graphite);
  padding: 3.5rem 0;
  border-bottom: 3px solid var(--color-steel);
}

.quiz-hero h1 {
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.quiz-hero p {
  color: #A8BAC2;
  max-width: 55ch;
}

.quiz-header-img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  margin-top: 2rem;
  border: 1px solid rgba(140,157,168,0.3);
}

.quiz-body {
  padding: 3rem 0;
}

.quiz-progress {
  background: var(--color-light-gray);
  height: 5px;
  border-radius: 3px;
  margin-bottom: 2.5rem;
  overflow: hidden;
}

.quiz-progress-bar {
  height: 100%;
  background: var(--color-steel);
  transition: width 0.4s ease;
}

.quiz-question-block {
  display: none;
}

.quiz-question-block.active {
  display: block;
}

.quiz-q-number {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-aluminum);
  margin-bottom: 0.6rem;
}

.quiz-q-text {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-graphite);
  margin-bottom: 1.75rem;
  line-height: 1.35;
}

.quiz-options {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.quiz-option {
  border: 1.5px solid var(--color-border);
  padding: 0.9rem 1.25rem;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-graphite);
  background: #fff;
  border-radius: var(--radius);
  transition: all 0.2s;
  text-align: left;
  width: 100%;
}

.quiz-option:hover {
  border-color: var(--color-aluminum);
  background: #F0F2F3;
}

.quiz-option.correct {
  border-color: #4A7C59;
  background: #EAF3EE;
  color: #2A5C3A;
}

.quiz-option.incorrect {
  border-color: #8B3A3A;
  background: #F5EAEA;
  color: #5C2A2A;
}

.quiz-option:disabled {
  cursor: default;
}

.quiz-feedback {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-mid);
  min-height: 1.5rem;
}

.quiz-nav {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.quiz-result {
  display: none;
  text-align: center;
  padding: 2rem 0;
}

.quiz-result.visible {
  display: block;
}

.quiz-score {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-steel);
  display: block;
  line-height: 1;
  margin: 1.5rem 0 0.5rem;
}

.quiz-result-img {
  width: 100%;
  max-width: 500px;
  height: 240px;
  object-fit: cover;
  margin: 1.5rem auto;
  border: 1px solid var(--color-border);
}

/* ABOUT / CONTACT / PARTNERSHIP */
.page-hero {
  background-color: var(--color-steel);
  padding: 3.5rem 0;
}

.page-hero h1 {
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.page-hero p {
  color: #A8BAC2;
  max-width: 55ch;
}

.page-body {
  padding: 3.5rem 0;
}

.page-body h2 {
  margin-bottom: 1rem;
  color: var(--color-steel);
}

.page-body h3 {
  margin: 2rem 0 0.75rem;
  color: var(--color-graphite);
}

.page-body p {
  margin-bottom: 1.25rem;
}

.page-feature-img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border: 1px solid var(--color-border);
  margin: 2rem 0;
}

/* CONTACT FORM */
.contact-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-form .field-group {
  margin-bottom: 1.25rem;
}

.contact-form label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-steel);
  margin-bottom: 0.4rem;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  background-color: #fff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-graphite);
  border-radius: var(--radius);
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--color-steel);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-disclaimer {
  font-size: 0.82rem;
  color: #777;
  border-left: 3px solid var(--color-border);
  padding-left: 0.75rem;
  margin-bottom: 1.5rem;
}

.contact-info-box {
  background-color: #F0F2F3;
  border-left: 3px solid var(--color-steel);
  padding: 1.5rem;
}

.contact-info-box h4 {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-steel);
  margin-bottom: 1rem;
}

.contact-info-item {
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
  color: var(--color-graphite);
}

.contact-info-item strong {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-aluminum);
  margin-bottom: 0.15rem;
}

/* PARTNERSHIP */
.partnership-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}

.partner-card {
  border: 1px solid var(--color-border);
  padding: 1.75rem;
  background: #fff;
}

.partner-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--color-steel);
}

.partner-card ul {
  list-style: none;
  padding: 0;
}

.partner-card ul li {
  padding: 0.45rem 0;
  border-bottom: 1px solid #EDEEF0;
  font-size: 0.88rem;
  color: #555;
  padding-left: 1rem;
  position: relative;
}

.partner-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  background: var(--color-aluminum);
  border-radius: 50%;
}

/* POLICY PAGES */
.policy-body {
  padding: 3.5rem 0;
  max-width: 820px;
}

.policy-body h2 {
  margin: 2.5rem 0 0.85rem;
  font-size: 1.35rem;
  color: var(--color-steel);
}

.policy-body h3 {
  margin: 1.75rem 0 0.65rem;
  font-size: 1.1rem;
}

.policy-body p {
  margin-bottom: 1.1rem;
  max-width: 68ch;
}

.policy-body ul, .policy-body ol {
  margin: 0.75rem 0 1.25rem;
}

.policy-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 1.5rem 0;
}

.policy-table th {
  background-color: var(--color-steel);
  color: var(--color-white);
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.1);
}

.policy-table td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  color: var(--color-graphite);
  vertical-align: top;
}

.policy-table tbody tr:nth-child(even) {
  background-color: #F5F6F7;
}

/* THANK YOU */
.thankyou-wrap {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1.25rem;
}

.thankyou-box h1 {
  margin-bottom: 1rem;
  color: var(--color-steel);
}

.thankyou-box p {
  margin-bottom: 1.5rem;
  max-width: 50ch;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

/* FOOTER */
.site-footer {
  background-color: var(--color-graphite);
  color: #A8B5BB;
  padding: 3.5rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .site-logo {
  font-size: 1.1rem;
  display: block;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: #7A8A90;
  max-width: 34ch;
  line-height: 1.65;
}

.footer-col h5 {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #C0CDD2;
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col ul li {
  margin-bottom: 0.5rem;
}

.footer-col ul li a {
  font-size: 0.85rem;
  color: #7A8A90;
  transition: color 0.2s;
}

.footer-col ul li a:hover {
  color: var(--color-aluminum);
}

.footer-bottom {
  padding: 1.25rem 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.78rem;
  color: #555F63;
}

.footer-disclaimer {
  font-size: 0.75rem;
  color: #4A5559;
  max-width: 65ch;
  line-height: 1.55;
}

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-graphite);
  border-top: 2px solid var(--color-steel);
  z-index: 9999;
  padding: 1rem 1.25rem;
  display: none;
}

.cookie-banner.visible {
  display: block;
}

.cookie-banner-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: space-between;
}

.cookie-banner p {
  font-size: 0.85rem;
  color: #A8B5BB;
  max-width: 65ch;
  margin: 0;
}

.cookie-banner a {
  color: var(--color-aluminum);
  text-decoration: underline;
}

.cookie-banner-actions {
  display: flex;
  gap: 0.75rem;
  flex-shrink: 0;
}

.btn-cookie-accept {
  background: var(--color-aluminum);
  color: var(--color-graphite);
  border: none;
  padding: 0.55rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  border-radius: var(--radius);
  transition: background 0.2s;
}

.btn-cookie-accept:hover {
  background: #A0B0BA;
}

.btn-cookie-more {
  background: transparent;
  color: #A8B5BB;
  border: 1px solid #4A5559;
  padding: 0.55rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  border-radius: var(--radius);
  text-decoration: none;
  display: inline-block;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  
  .article-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-list {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-graphite);
    flex-direction: column;
    padding: 1rem 1.25rem 1.5rem;
    gap: 0.75rem;
    border-top: 1px solid rgba(255,255,255,0.08);
    z-index: 999;
  }

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

  .site-header {
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-image-wrap img {
    height: 240px;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .two-col--image-right .col-image {
    order: -1;
  }

  .quiz-teaser {
    grid-template-columns: 1fr;
    padding: 2rem;
  }

  .quiz-teaser-img {
    width: 100%;
    height: 180px;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .thermal-grid {
    grid-template-columns: 1fr;
  }

  .thermal-stats {
    grid-template-columns: 1fr 1fr;
  }

  .elastic-wrap {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .alloy-grid {
    grid-template-columns: 1fr;
  }

  .partnership-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.75rem;
  }

  .cookie-banner-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .article-header h1 {
    max-width: 100%;
  }

  .quiz-q-text {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 2.5rem 0;
  }

  .thermal-stats {
    grid-template-columns: 1fr;
  }
}