body {
  background: var(--ink);
  color: var(--text-on-dark);
  font-family: var(--font-body);
  line-height: 1.6;
}

::selection {
  background: var(--accent);
  color: var(--ink);
}

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 24, 48, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px clamp(20px, 5vw, 64px);
}

.brand {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--paper);
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 30px);
  flex-wrap: wrap;
}

.navlinks {
  display: flex;
  gap: clamp(14px, 3vw, 34px);
}

.navlinks a {
  color: var(--text-on-dark);
  text-decoration: none;
  font-size: 0.88rem;
  border-bottom: 1px solid transparent;
  padding-bottom: 3px;
  transition: border-color .2s ease, color .2s ease;
}

.navlinks a:hover,
.navlinks a.active {
  color: var(--paper);
  border-color: var(--accent);
}

.lang-toggle {
  display: flex;
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  overflow: hidden;
}

.lang-toggle button {
  background: transparent;
  border: none;
  color: var(--text-on-dark);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  padding: 5px 12px;
  cursor: pointer;
  transition: background .2s ease, color .2s ease;
}

.lang-toggle button.active {
  background: var(--accent);
  color: var(--ink);
}

.nav-burger {
  display: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--paper);
  width: 36px;
  height: 32px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
}

@media (max-width: 720px) {
  .nav-burger { display: block; }
  .navlinks {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ink);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
  }
  .navlinks.open { display: flex; }
  .navlinks a {
    padding: 12px clamp(20px, 5vw, 64px);
    width: 100%;
    border-bottom: none;
  }
}

/* HERO */
header.hero {
  position: relative;
  padding: clamp(60px, 12vw, 130px) var(--gap-page) clamp(50px, 9vw, 90px);
  max-width: var(--page-max);
  margin: 0 auto;
}

.hero-kicker {
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 22px;
  max-width: 40ch;
}

h1.hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.4rem, 6.5vw, 4.6rem);
  color: var(--paper);
  line-height: 1.04;
  letter-spacing: -0.01em;
  max-width: 20ch;
}

.hero-sub {
  margin-top: 28px;
  max-width: 58ch;
  font-size: 1.05rem;
  color: var(--text-on-dark);
}

.hero-btn {
  display: inline-block;
  margin-top: 34px;
  background: var(--accent);
  color: var(--ink);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  padding: 13px 26px;
  border-radius: 4px;
  transition: opacity .2s ease;
}

.hero-btn:hover { opacity: 0.88; }

.hero-rule {
  margin-top: 46px;
  height: 1px;
  width: 100%;
  background: linear-gradient(90deg, var(--accent), transparent 70%);
}

/* SECTION SHELL */
section {
  padding: clamp(20px, 5vw, 60px) var(--gap-page) clamp(60px, 9vw, 100px);
  max-width: var(--page-max);
  margin: 0 auto;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: clamp(30px, 5vw, 54px);
  flex-wrap: wrap;
}

.section-tag {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--accent);
  font-size: 1rem;
  white-space: nowrap;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.8rem, 3.4vw, 2.7rem);
  color: var(--paper);
}

.section-title-line {
  flex: 1;
  height: 1px;
  background: var(--line);
  align-self: center;
  min-width: 40px;
}

.page-sub {
  margin-top: -30px;
  margin-bottom: 40px;
  max-width: 65ch;
  font-size: 1.02rem;
  color: var(--text-on-dark);
}

footer {
  padding: 40px var(--gap-page) 60px;
  max-width: var(--page-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 10px;
}

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

.footer-social {
  display: flex;
  gap: 14px;
}

.footer-social a { text-decoration: none; }
.footer-social a:hover { color: var(--accent); }

.back-home {
  display: inline-block;
  margin: 0 var(--gap-page) 40px;
  color: var(--text-on-dark);
  text-decoration: none;
  font-size: 0.9rem;
  max-width: var(--page-max);
}

.back-home:hover { color: var(--paper); }

.loading-note {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 20px 0;
}