:root {
  --ink: #121417;
  --muted: #5e6874;
  --paper: #f7f4ee;
  --panel: #ffffff;
  --line: #ded8cc;
  --green: #214a3b;
  --blue: #314b63;
  --gold: #b9822b;
  --charcoal: #171c22;
  --shadow: 0 18px 50px rgba(24, 28, 34, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

a {
  color: inherit;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(247, 244, 238, 0.92);
  border-bottom: 1px solid rgba(18, 20, 23, 0.08);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  background: var(--green);
  border-radius: 6px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.94rem;
}

.site-nav a,
.site-footer a,
.guide-list a,
.start-links a {
  text-decoration: none;
}

.site-nav a:hover,
.site-footer a:hover,
.guide-list a:hover,
.start-links a:hover {
  color: var(--green);
}

.hero {
  position: relative;
  min-height: 720px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background: var(--charcoal);
}

.hero img,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero img {
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(9, 14, 17, 0.9) 0%, rgba(9, 14, 17, 0.72) 38%, rgba(9, 14, 17, 0.18) 100%),
    linear-gradient(0deg, rgba(9, 14, 17, 0.32), rgba(9, 14, 17, 0));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding: 96px clamp(18px, 5vw, 72px);
  color: #fff;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(3.4rem, 9vw, 7.8rem);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin: 10px 0 8px;
  font-size: 1.1rem;
  line-height: 1.2;
}

.lede {
  max-width: 640px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 6px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  color: #101418;
  background: #f2c06d;
}

.button.secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.intro,
.band,
.feature-split,
.start-panel {
  padding: clamp(54px, 8vw, 104px) clamp(18px, 5vw, 72px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 1fr);
  gap: clamp(30px, 6vw, 80px);
  align-items: start;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.intro p:last-child {
  margin: 0;
  color: #39424d;
  font-size: 1.2rem;
}

.band {
  background: #ede8dd;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 34px;
}

.section-heading > p:last-child {
  color: var(--muted);
  font-size: 1.1rem;
}

.layer-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.layer-grid article {
  min-height: 230px;
  padding: 22px;
  background: var(--panel);
  border: 1px solid rgba(18, 20, 23, 0.08);
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(24, 28, 34, 0.06);
}

.layer-grid span {
  color: var(--gold);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.layer-grid p,
.feature-split p,
.clean-list,
.start-panel p {
  color: var(--muted);
}

.feature-split {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(280px, 1fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: center;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.feature-split.reverse {
  grid-template-columns: minmax(280px, 1fr) minmax(280px, 0.95fr);
  background: #fff;
}

.feature-split.reverse img {
  order: 2;
}

.feature-split img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.feature-split p {
  font-size: 1.08rem;
}

.guide-list,
.start-links {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.guide-list a,
.start-links a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-weight: 800;
}

.clean-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.clean-list li {
  padding-left: 18px;
  border-left: 4px solid var(--gold);
}

.start-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(28px, 6vw, 76px);
  align-items: start;
  color: #fff;
  background: var(--charcoal);
}

.start-panel p {
  color: rgba(255, 255, 255, 0.74);
  font-size: 1.12rem;
}

.start-links a {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.14);
  color: #fff;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(18px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.7);
  background: #0c0f12;
}

.site-footer p {
  margin: 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.article-page {
  max-width: 920px;
  padding: clamp(54px, 8vw, 104px) clamp(18px, 5vw, 72px);
  margin: 0 auto;
  background: var(--paper);
}

.article-page h1 {
  margin-bottom: 22px;
  color: var(--ink);
  font-size: clamp(2.8rem, 7vw, 5.8rem);
}

.article-page h2 {
  margin-top: 42px;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

.article-page p,
.article-page li {
  color: #39424d;
  font-size: 1.08rem;
}

.article-page ul {
  padding-left: 20px;
}

.article-meta {
  color: var(--muted);
  font-weight: 700;
}

@media (max-width: 980px) {
  .layer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-split,
  .feature-split.reverse,
  .intro,
  .start-panel {
    grid-template-columns: 1fr;
  }

  .feature-split.reverse img {
    order: 0;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    min-height: 640px;
  }

  .hero-overlay {
    background: linear-gradient(90deg, rgba(9, 14, 17, 0.9), rgba(9, 14, 17, 0.54));
  }

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

  .site-footer {
    flex-direction: column;
  }
}