@import url("https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500;600;700&display=swap");

:root {
  color-scheme: light;
  --bg: #f3f9fd;
  --bg-alt: #d8ecfa;
  --bg-card: #ffffff;
  --navy: #1c293f;
  --navy-mid: #2c3d59;
  --navy-deep: #071428;
  --ink-soft: #51627d;
  --primary-1: #00ccff;
  --primary-2: #00a0ff;
  --primary-3: #0077ff;
  --primary-4: #004bde;
  --secondary-1: #ff469e;
  --secondary-2: #7f45ff;
  --secondary-3: #4414ad;
  --secondary-4: #11d175;
  --secondary-5: #f98a1b;
  --secondary-6: #ffc800;
  --blue: var(--primary-2);
  --blue-dark: var(--primary-4);
  --orange: var(--secondary-5);
  --line: rgba(28, 41, 63, 0.12);
  --line-strong: rgba(0, 75, 222, 0.18);
  --shadow: 0 18px 48px rgba(7, 20, 40, 0.12);
  --shadow-sm: 0 6px 18px rgba(28, 41, 63, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Open Sans", "Helvetica Neue", sans-serif;
  color: var(--navy);
  background:
    radial-gradient(circle at top left, rgba(0, 204, 255, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(127, 69, 255, 0.12), transparent 26%),
    linear-gradient(180deg, #f3f9fd 0%, #ffffff 38%, #f3f9fd 100%);
  line-height: 1.6;
}

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

.shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
}

/* ─── Header ─────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(243, 249, 253, 0.86);
  border-bottom: 1px solid var(--line);
}

.site-header__inner,
.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
}

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

.brand__logo {
  display: block;
  width: auto;
  height: 32px;
  object-fit: contain;
}

.brand__sub {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary-4);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.brand__sub--pill {
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(0, 75, 222, 0.08);
  border: 1px solid rgba(0, 75, 222, 0.14);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.site-nav a:hover {
  color: var(--primary-4);
}

.nav__cta {
  padding: 8px 18px;
  background: linear-gradient(135deg, var(--primary-3), var(--primary-4));
  color: #fff !important;
  border-radius: 999px;
  font-weight: 600 !important;
  font-size: 0.875rem;
  box-shadow: 0 10px 24px rgba(0, 75, 222, 0.18);
  transition: transform 0.15s, box-shadow 0.15s;
}

.nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(0, 75, 222, 0.22);
  color: #fff !important;
}

/* ─── Hero ────────────────────────────────────────────── */

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 24px;
  align-items: stretch;
  padding: 56px 0 32px;
}

.hero__card {
  position: relative;
  padding: 40px;
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.97), rgba(216, 236, 250, 0.82)),
    var(--bg-card);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero__panel {
  position: relative;
  padding: 30px;
  border: 1px solid rgba(127, 69, 255, 0.14);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 249, 253, 0.94)),
    var(--bg-card);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

.hero__card::before,
.hero__panel::before,
.post-card::before,
.rail-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--primary-1),
    var(--primary-3),
    var(--secondary-2),
    var(--secondary-1),
    var(--secondary-4),
    var(--secondary-6)
  );
}

.hero__card::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -120px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 160, 255, 0.18), transparent 68%);
  pointer-events: none;
}

.hero__kicker,
.section-label,
.eyebrow {
  margin: 0 0 10px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary-4);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.hero h1 {
  margin: 0;
  font-weight: 700;
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.hero__lede {
  margin: 18px 0 0;
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 54ch;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.hero__cta {
  display: inline-block;
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--primary-3), var(--primary-4));
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 14px 30px rgba(0, 75, 222, 0.18);
  transition: transform 0.15s, box-shadow 0.15s;
}

.hero__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(0, 75, 222, 0.22);
  color: #fff;
}

.hero__ghost {
  display: inline-flex;
  align-items: center;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.72);
  color: var(--primary-4);
  font-weight: 600;
}

.hero__ghost:hover {
  border-color: rgba(0, 75, 222, 0.32);
  color: var(--blue-dark);
}

.hero__panel-type {
  margin: 0;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--secondary-1);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.hero__panel-title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--navy);
}

.hero__panel-title a {
  color: var(--navy);
}

.hero__panel-title a:hover {
  color: var(--primary-4);
}

.hero__panel-excerpt {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.6;
  flex: 1;
}

/* Fallback proof stats */
.proof-list {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.proof-list div {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.proof-list dt {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-4);
  min-width: 60px;
}

.hero__swatches {
  display: flex;
  gap: 10px;
  margin-top: 28px;
}

.hero__swatch {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.58);
}

.hero__swatch--blue {
  background: var(--primary-3);
}

.hero__swatch--pink {
  background: var(--secondary-1);
}

.hero__swatch--green {
  background: var(--secondary-4);
}

.hero__swatch--gold {
  background: var(--secondary-6);
}

.proof-list dd {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.4;
}

/* ─── Post grid ───────────────────────────────────────── */

.section {
  padding: 18px 0 72px;
}

.section--compact {
  padding-top: 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.post-card,
.empty-state {
  position: relative;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 249, 253, 0.92)),
    var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s, transform 0.15s;
  overflow: hidden;
}

.post-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.post-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 240px;
}

.post-card h3 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.post-card h2 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.post-card h2 a,
.post-card h3 a {
  color: var(--navy);
}

.post-card h2 a:hover,
.post-card h3 a:hover {
  color: var(--blue);
}

.post-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

.post-card__meta {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--secondary-3);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.post-card__cta {
  margin-top: auto;
  color: var(--blue);
  font-weight: 600;
  font-size: 0.9rem;
}

.post-card__cta:hover {
  color: var(--blue-dark);
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.signal-card,
.page-card,
.filter-chip {
  position: relative;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 249, 253, 0.92)),
    var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.signal-card h3 {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.25;
}

.signal-card p,
.page-body p,
.page-body li {
  color: var(--ink-soft);
}

.signal-card__label {
  margin: 0 0 10px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--secondary-1);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.archive-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.filter-chip {
  min-width: 160px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.filter-chip span {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.filter-chip strong {
  font-size: 1.05rem;
  color: var(--primary-4);
}

.archive-card__footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.archive-card__tag {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(0, 75, 222, 0.08);
  border: 1px solid rgba(0, 75, 222, 0.14);
  color: var(--primary-4);
  font-size: 0.76rem;
  font-weight: 600;
}

/* ─── CTA band ────────────────────────────────────────── */

.cta-band {
  position: relative;
  background: linear-gradient(135deg, var(--navy-deep), var(--primary-4) 58%, var(--secondary-3));
  margin: 0 0 72px;
  border-radius: 24px;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: auto -60px -80px auto;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 200, 0, 0.35), transparent 68%);
}

.cta-band__inner {
  padding: 52px 40px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.cta-band__label {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary-1);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.cta-band__heading {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.cta-band__btn {
  margin-top: 8px;
  display: inline-block;
  padding: 14px 32px;
  background: #fff;
  color: var(--primary-4);
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 14px 30px rgba(7, 20, 40, 0.18);
  transition: transform 0.15s, box-shadow 0.15s;
}

.cta-band__btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(7, 20, 40, 0.22);
}

/* ─── Footer ──────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
}

.site-footer__inner {
  align-items: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--ink-soft);
}

.site-footer a {
  color: var(--ink-soft);
}

.site-footer a:hover {
  color: var(--navy);
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 0.84rem;
  color: var(--ink-soft);
}

/* ─── Article pages ───────────────────────────────────── */

.shell--article {
  padding: 42px 0 84px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 20px;
  color: var(--blue);
  font-weight: 600;
}

.back-link:hover {
  color: var(--blue-dark);
}

.insight__hero {
  position: relative;
  padding: 0 0 28px;
  border-bottom: 1px solid var(--line);
}

.insight h1 {
  margin: 0;
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 15ch;
}

.meta {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.insight__meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.meta-link {
  color: var(--primary-4);
  font-size: 0.84rem;
  font-weight: 600;
}

.author-strip {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 24px;
  padding: 10px 14px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
}

.author-strip__image,
.author-bio__image,
.author-hero__image,
.rail-card__image {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
}

.author-strip__name,
.author-hero__role,
.rail-value--strong {
  margin: 0;
  font-weight: 700;
  color: var(--navy);
}

.author-strip__role,
.rail-copy {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.insight__hero-accent {
  width: 148px;
  height: 6px;
  margin-top: 24px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--primary-1),
    var(--primary-3),
    var(--secondary-2),
    var(--secondary-1)
  );
}

.insight__content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 32px;
  padding-top: 32px;
}

.body {
  font-size: 1.04rem;
  line-height: 1.75;
}

.body p,
.body li {
  color: var(--navy);
}

.body h2,
.body h3,
.body h4 {
  margin-top: 36px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.body a {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

.body a:hover {
  color: var(--blue-dark);
}

.body blockquote {
  margin: 28px 0;
  padding: 18px 22px;
  border-left: 4px solid var(--primary-3);
  background: rgba(216, 236, 250, 0.72);
  border-radius: 0 8px 8px 0;
}

.body table {
  width: 100%;
  border-collapse: collapse;
  margin: 26px 0;
  background: var(--bg-card);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.body th,
.body td {
  border: 1px solid var(--line);
  padding: 12px 16px;
  text-align: left;
}

.body th {
  background: var(--bg-alt);
  font-weight: 600;
}

.body thead th {
  color: var(--navy);
}

.takeaways,
.author-bio,
.page-hero,
.author-hero {
  margin-top: 32px;
}

.takeaways {
  padding: 26px 28px;
  border-radius: 24px;
  border: 1px solid rgba(127, 69, 255, 0.14);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 249, 253, 0.94)),
    var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.takeaways h2,
.page-hero h1,
.author-hero h1,
.author-bio h2 {
  margin: 0;
  letter-spacing: -0.02em;
}

.takeaways__list {
  margin: 18px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
}

.takeaways__list li {
  color: var(--navy);
}

.insight__rail {
  display: grid;
  gap: 14px;
  align-content: start;
}

.rail-card {
  position: relative;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.rail-label {
  margin: 0 0 8px;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--secondary-1);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.rail-value {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

.rail-card--author {
  gap: 10px;
  display: grid;
}

.author-bio {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 249, 253, 0.92)),
    var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.author-bio p {
  margin: 0;
}

.author-bio__image {
  width: 96px;
  height: 96px;
}

.author-bio__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 16px;
}

.author-bio__links a {
  color: var(--primary-4);
  font-weight: 600;
}

.related-posts {
  margin-top: 44px;
}

.page-hero {
  padding: 48px 0 12px;
}

.page-hero h1,
.author-hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  line-height: 1.1;
}

.page-hero__lede,
.author-hero__lede {
  max-width: 72ch;
  margin: 16px 0 0;
  color: var(--ink-soft);
  font-size: 1.02rem;
}

.page-card {
  padding: 32px;
}

.page-body h2,
.page-body h3 {
  margin-top: 28px;
  letter-spacing: -0.01em;
}

.page-body a {
  color: var(--primary-4);
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

.author-hero__card {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 249, 253, 0.92)),
    var(--bg-card);
  box-shadow: var(--shadow);
}

.author-hero__image {
  width: 220px;
  height: 220px;
  border-radius: 24px;
}

/* ─── Responsive ──────────────────────────────────────── */

@media (max-width: 900px) {
  .hero,
  .insight__content,
  .author-hero__card,
  .author-bio {
    grid-template-columns: 1fr;
  }

  .site-header__inner,
  .site-footer__inner,
  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    gap: 16px;
    flex-wrap: wrap;
  }

  .insight__meta-row,
  .archive-card__footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .author-hero__image {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
  }

  .cta-band__inner {
    padding: 40px 24px;
  }
}