:root {
  --bg: #070b18;
  --bg-2: #0b1020;
  --text: #f7f9ff;
  --muted: #b7c1d4;
  --soft: #dce6f7;
  --accent: #7dd3fc;
  --accent-2: #c084fc;
  --accent-3: #a7f3d0;
  --line: rgba(255,255,255,.13);
  --line-strong: rgba(255,255,255,.2);
  --card: rgba(255,255,255,.055);
  --card-2: rgba(255,255,255,.085);
  --shadow: 0 30px 90px rgba(0,0,0,.42);
  --radius: 28px;
  --radius-sm: 20px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 12% -8%, rgba(125,211,252,.24), transparent 26rem),
    radial-gradient(circle at 95% 0%, rgba(192,132,252,.20), transparent 30rem),
    linear-gradient(180deg, var(--bg), var(--bg-2) 42%, #090d1c 100%);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.55), transparent 70%);
}

a { color: inherit; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 99;
  padding: .75rem 1rem;
  border-radius: 999px;
  background: var(--text);
  color: #080d1a;
  font-weight: 850;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: .9rem clamp(1rem, 4vw, 4rem);
  backdrop-filter: blur(22px) saturate(1.3);
  -webkit-backdrop-filter: blur(22px) saturate(1.3);
  background: rgba(7,11,24,.76);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .72rem;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: -.025em;
  white-space: nowrap;
}

.mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 2.42rem;
  height: 2.42rem;
  border-radius: 15px;
  background:
    radial-gradient(circle at 25% 20%, rgba(255,255,255,.8), transparent 28%),
    linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #07101e;
  font-weight: 950;
  box-shadow: 0 12px 34px rgba(125,211,252,.25);
}

nav {
  display: flex;
  align-items: center;
  gap: 1.05rem;
  font-size: .95rem;
}

nav a {
  text-decoration: none;
  color: var(--muted);
  white-space: nowrap;
  transition: color .18s ease, transform .18s ease, background .18s ease;
}

nav a:hover,
nav a:focus {
  color: var(--text);
  transform: translateY(-1px);
}

.hero,
.section {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  min-height: 76vh;
  padding: clamp(4rem, 9vw, 6.5rem) 0 clamp(3rem, 6vw, 4.5rem);
}

.hero-copy {
  max-width: 980px;
}

.eyebrow {
  margin: 0 0 .8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-weight: 900;
  font-size: .76rem;
}

h1, h2, h3 {
  line-height: 1.04;
  letter-spacing: -.055em;
  text-wrap: balance;
}

h1 {
  margin: 0;
  max-width: 10ch;
  font-size: clamp(3.6rem, 10.2vw, 8.35rem);
  background: linear-gradient(135deg, #ffffff 8%, #dff7ff 28%, #c7b4ff 78%);
  -webkit-background-clip: text;
  color: transparent;
}

h2 {
  margin: 0;
  font-size: clamp(2.1rem, 5.2vw, 4.3rem);
}

h3 {
  margin: 0 0 .75rem;
  font-size: 1.26rem;
}

.lead {
  max-width: 810px;
  margin: 1.05rem 0 0;
  color: var(--muted);
  font-size: clamp(1.12rem, 2vw, 1.38rem);
}

.strong-lead {
  color: var(--text);
  font-weight: 900;
  font-size: clamp(1.35rem, 2.5vw, 1.88rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  margin-top: 2.15rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.2rem;
  padding: .82rem 1.24rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 900;
  touch-action: manipulation;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

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

.button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #07101e;
  box-shadow: 0 18px 46px rgba(125,211,252,.18);
}

.button.secondary {
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: rgba(255,255,255,.055);
}

.section {
  padding: clamp(3.8rem, 8vw, 5.4rem) 0;
  scroll-margin-top: 6.5rem;
}

.intro,
.relation {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.intro p {
  max-width: 900px;
  margin: 0 auto 1rem;
  color: var(--soft);
  font-size: clamp(1.17rem, 2.35vw, 1.72rem);
  letter-spacing: -.018em;
}

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

.section-heading {
  margin-bottom: 2rem;
}

.section-heading p {
  max-width: 720px;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.grid article {
  position: relative;
  min-height: 14rem;
  padding: 1.45rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background:
    linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.035));
  box-shadow: 0 18px 50px rgba(0,0,0,.16);
  overflow: hidden;
}

.grid article::after {
  content: "";
  position: absolute;
  inset: auto -20% -45% auto;
  width: 12rem;
  height: 12rem;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(125,211,252,.11), transparent 65%);
  pointer-events: none;
}

.grid article span {
  display: inline-flex;
  margin-bottom: 1.05rem;
  color: var(--accent);
  font-weight: 950;
  letter-spacing: .08em;
}

.grid article p {
  margin: 0;
  color: var(--muted);
}

.relation-card,
.manifest-body {
  padding: clamp(1.35rem, 4vw, 3rem);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255,255,255,.085), rgba(255,255,255,.04));
  box-shadow: var(--shadow);
}

.relation-card p,
.manifest-body p {
  color: var(--muted);
}

.relation-card strong,
.manifest-body strong {
  color: var(--text);
}

.principle-line {
  margin-top: 2rem;
  padding: 1.25rem;
  border-radius: 20px;
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(circle at 0% 0%, rgba(125,211,252,.16), transparent 45%),
    rgba(255,255,255,.06);
  color: var(--text) !important;
  font-size: clamp(1.25rem, 2.3vw, 1.78rem);
  font-weight: 950;
  letter-spacing: -.035em;
}

.manifest-body h3 {
  margin-top: 2.35rem;
}

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

.closing {
  color: var(--text) !important;
  font-weight: 900;
  font-size: 1.15rem;
}

.contact {
  text-align: center;
}

.email-card {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.25rem;
  min-height: 3.5rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,.065);
  color: var(--text);
  text-decoration: none;
  font-weight: 900;
  box-shadow: var(--shadow);
  max-width: 100%;
  overflow-wrap: anywhere;
}

.email-card:hover,
.email-card:focus {
  background: rgba(255,255,255,.1);
}

footer {
  padding: 2rem 1rem 3rem;
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

footer p {
  margin: .35rem 0;
}

footer a {
  color: var(--accent);
}

@media (prefers-reduced-motion: no-preference) {
  .grid article,
  .relation-card,
  .manifest-body,
  .hero-copy {
    animation: rise .7s ease both;
  }

  @keyframes rise {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

/* Tablet and mobile navigation */
@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: .85rem 1rem .75rem;
  }

  nav {
    width: 100%;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    padding: .1rem .05rem .3rem;
    scrollbar-width: none;
  }

  nav::-webkit-scrollbar {
    display: none;
  }

  nav a {
    flex: 0 0 auto;
    padding: .48rem .75rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255,255,255,.045);
    font-size: .88rem;
  }

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

/* Premium phone layout */
@media (max-width: 560px) {
  body {
    background:
      radial-gradient(circle at 20% -4%, rgba(125,211,252,.22), transparent 18rem),
      radial-gradient(circle at 100% 0%, rgba(192,132,252,.16), transparent 22rem),
      var(--bg);
  }

  .site-header {
    gap: .8rem;
    padding-inline: .75rem;
  }

  .brand {
    font-size: 1rem;
    max-width: 100%;
  }

  .mark {
    width: 2.15rem;
    height: 2.15rem;
    border-radius: 12px;
  }

  nav a[data-short] {
    font-size: 0;
  }

  nav a[data-short]::after {
    content: attr(data-short);
    font-size: .84rem;
  }

  .hero,
  .section {
    width: min(100% - 1.05rem, 1120px);
  }

  .hero {
    min-height: auto;
    padding: 3.15rem 0 2.85rem;
  }

  h1 {
    font-size: clamp(3.2rem, 18vw, 4.85rem);
    max-width: 8ch;
  }

  h2 {
    font-size: clamp(2.05rem, 10vw, 3.1rem);
  }

  h3 {
    font-size: 1.14rem;
  }

  .eyebrow {
    font-size: .68rem;
    letter-spacing: .12em;
  }

  .lead {
    font-size: 1.05rem;
    line-height: 1.58;
  }

  .strong-lead {
    font-size: 1.24rem;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 1.55rem;
  }

  .button {
    width: 100%;
    min-height: 3.3rem;
  }

  .section {
    padding: 3.25rem 0;
    scroll-margin-top: 7.65rem;
  }

  .intro p {
    font-size: 1.13rem;
    line-height: 1.62;
  }

  .section-heading {
    margin-bottom: 1.35rem;
  }

  .grid {
    gap: .82rem;
  }

  .grid article {
    min-height: auto;
    padding: 1.1rem;
    border-radius: 19px;
  }

  .grid article span {
    margin-bottom: .75rem;
  }

  .relation-card,
  .manifest-body {
    padding: 1.07rem;
    border-radius: 21px;
  }

  .manifest-body h3 {
    margin-top: 1.85rem;
  }

  .principle-line {
    padding: 1rem;
    font-size: 1.18rem;
  }

  .email-card {
    width: 100%;
    border-radius: 20px;
    padding-inline: .85rem;
  }

  footer {
    font-size: .92rem;
  }
}

@media (max-width: 370px) {
  nav a {
    padding: .42rem .62rem;
  }

  nav a[data-short]::after {
    font-size: .8rem;
  }

  h1 {
    font-size: 2.9rem;
  }

  .lead {
    font-size: 1rem;
  }
}


/* Polished intro: keep the opening as one continuous lead section */
.hero {
  min-height: auto;
  padding-bottom: clamp(3.5rem, 7vw, 5rem);
}

.hero-copy {
  max-width: 980px;
}

.hero-continuation {
  margin-top: clamp(2.2rem, 4vw, 3.4rem);
  padding-top: 0;
  max-width: 860px;
}

.hero-continuation .strong-lead {
  margin-top: 0;
}

.hero-continuation .lead {
  max-width: 860px;
}

@media (max-width: 560px) {
  .hero-continuation {
    margin-top: 2rem;
  }
}


/* Calm desktop refinement: no AI icon, softer scale, more breathing room */
@media (min-width: 901px) {
  .site-header {
    padding: 1.05rem clamp(2rem, 5vw, 5.5rem);
  }

  .brand {
    gap: 0;
  }

  .brand-text {
    padding-left: 0;
  }

  .brand-name {
    font-size: 1.18rem;
    letter-spacing: -.035em;
  }

  .brand-tagline {
    font-size: .76rem;
    margin-top: .18rem;
  }

  nav {
    gap: 1.35rem;
    font-size: .98rem;
  }

  .hero,
  .section {
    width: min(1080px, calc(100% - 7rem));
  }

  .hero {
    min-height: auto;
    padding-top: clamp(5.2rem, 8vw, 7.4rem);
    padding-bottom: clamp(4rem, 6vw, 5.8rem);
  }

  .hero-copy {
    max-width: 900px;
  }

  h1 {
    font-size: clamp(4.4rem, 7vw, 6.55rem);
    max-width: 11ch;
  }

  h2 {
    font-size: clamp(2.25rem, 3.8vw, 3.45rem);
  }

  .lead {
    max-width: 760px;
    font-size: clamp(1.07rem, 1.5vw, 1.24rem);
    line-height: 1.7;
  }

  .strong-lead {
    font-size: clamp(1.32rem, 1.95vw, 1.62rem);
  }

  .hero-continuation {
    margin-top: clamp(2.4rem, 3.7vw, 3.4rem);
    max-width: 760px;
  }

  .hero-continuation .lead {
    max-width: 760px;
  }

  .eyebrow {
    font-size: .72rem;
    letter-spacing: .15em;
  }

  .grid article {
    min-height: 12.5rem;
  }
}

/* Brand without icon on all sizes */
.brand {
  gap: 0;
}

.brand-text {
  padding-left: 0;
}

@media (max-width: 560px) {
  .brand-name {
    font-size: 1.05rem;
  }

  h1 {
    font-size: clamp(2.85rem, 15vw, 4.2rem);
  }
}


/* Brand update: two-line textual identity, no AI badge */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-name {
  display: block;
  color: var(--text);
  font-size: clamp(1.55rem, 2vw, 2.05rem);
  font-weight: 850;
  letter-spacing: -0.045em;
}

.brand-tagline {
  display: block;
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: clamp(0.82rem, 1vw, 1rem);
  font-weight: 650;
  letter-spacing: 0.005em;
}

@media (max-width: 900px) {
  .brand-name {
    font-size: 1.35rem;
  }

  .brand-tagline {
    font-size: .78rem;
  }
}

@media (max-width: 560px) {
  .brand-name {
    font-size: 1.18rem;
  }

  .brand-tagline {
    display: block;
    font-size: .7rem;
    max-width: 16rem;
    line-height: 1.2;
  }
}


/* Final brand behavior:
   Desktop: only "Tekoälyhumanistit"
   Mobile: two lines with tagline */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-name {
  display: block;
  color: var(--text);
  font-size: clamp(1.45rem, 1.7vw, 1.85rem);
  font-weight: 850;
  letter-spacing: -0.045em;
}

.brand-tagline {
  display: none;
}

@media (max-width: 560px) {
  .brand {
    align-items: flex-start;
    max-width: 100%;
  }

  .brand-name {
    font-size: 1.42rem;
    font-weight: 850;
    letter-spacing: -0.04em;
  }

  .brand-tagline {
    display: block;
    margin-top: .18rem;
    color: var(--muted);
    font-size: .82rem;
    font-weight: 650;
    line-height: 1.18;
    letter-spacing: 0;
    max-width: 18rem;
    white-space: normal;
  }
}

@media (max-width: 370px) {
  .brand-name {
    font-size: 1.28rem;
  }

  .brand-tagline {
    font-size: .76rem;
    max-width: 15.5rem;
  }
}