:root {
  --ink: #111111;
  --muted: #666666;
  --paper: #fbfbfb;
  --line: #e3e3e3;
  --red: #c8102e;
  --red-dark: #8f0b20;
  --black: #111111;
  --soft-red: #fff1f3;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  background: rgba(251, 251, 251, 0.92);
  border-bottom: 1px solid rgba(17, 17, 17, 0.08);
  backdrop-filter: blur(16px);
}

.header-social {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding: 9px 14px;
  border: 1px solid var(--red);
  border-radius: 6px;
  color: var(--red);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  background: var(--black);
  border-radius: 50%;
  font-size: 13px;
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
  color: var(--muted);
  font-size: 15px;
}

.nav a {
  text-decoration: none;
}

.hero {
  position: relative;
  min-height: 88vh;
  display: grid;
  align-items: end;
  padding: 140px clamp(18px, 5vw, 72px) 72px;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.88), rgba(0, 0, 0, 0.42) 48%, rgba(0, 0, 0, 0.05)),
    url("hero-volteo.png") center / cover;
}

.hero-content {
  position: relative;
  max-width: 780px;
  color: var(--white);
}

.eyebrow,
.section-label {
  margin: 0 0 12px;
  color: var(--red);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 20px;
  max-width: 760px;
  font-size: clamp(44px, 7vw, 86px);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 32px;
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  color: var(--white);
  background: var(--red);
}

.button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.62);
}

.button.instagram {
  color: var(--white);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.48);
}

.intro,
.classes,
.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 6vw, 84px);
  padding: 86px clamp(18px, 5vw, 72px);
}

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

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.04;
  letter-spacing: 0;
}

.intro > p,
.classes-text p,
.contact-copy p {
  color: var(--muted);
  font-size: 18px;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.features article {
  min-height: 245px;
  padding: 34px clamp(18px, 4vw, 46px);
  background: var(--paper);
}

.feature-icon {
  display: inline-flex;
  margin-bottom: 34px;
  color: var(--red);
  font-weight: 800;
}

.features h3 {
  margin-bottom: 10px;
  font-size: 24px;
}

.features p {
  color: var(--muted);
}

.classes {
  align-items: center;
  background: var(--soft-red);
}

.schedule-panel {
  display: grid;
  gap: 1px;
  overflow: hidden;
  background: rgba(17, 17, 17, 0.12);
  border: 1px solid rgba(17, 17, 17, 0.12);
  border-radius: 8px;
}

.schedule-panel div,
.contact-card {
  background: var(--white);
}

.schedule-panel div {
  padding: 24px;
}

.schedule-panel span,
.contact-card span,
.contact-card small,
.schedule-panel small {
  display: block;
  color: var(--muted);
}

.schedule-panel strong {
  display: block;
  margin: 5px 0 2px;
  font-size: 22px;
}

.contact {
  background: var(--black);
  color: var(--white);
}

.contact-copy p {
  color: rgba(255, 255, 255, 0.78);
}

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

.contact-card {
  min-height: 130px;
  padding: 22px;
  border-radius: 8px;
  color: var(--ink);
  text-decoration: none;
}

.contact-card strong {
  display: block;
  margin: 7px 0;
  font-size: 24px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(18px, 5vw, 72px);
  color: var(--muted);
  background: var(--paper);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--red);
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 760px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
  }

  .brand span:last-child {
    display: none;
  }

  .nav {
    display: none;
  }

  .header-social {
    margin-left: auto;
    color: var(--white);
    background: var(--red);
    border-color: var(--red);
  }

  .hero {
    min-height: 86vh;
    padding-top: 118px;
    padding-bottom: 48px;
  }

  .hero-media {
    background:
      linear-gradient(180deg, rgba(0, 0, 0, 0.54), rgba(0, 0, 0, 0.88)),
      url("hero-volteo.png") 64% center / cover;
  }

  .intro,
  .classes,
  .contact {
    grid-template-columns: 1fr;
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .features,
  .contact-actions {
    grid-template-columns: 1fr;
  }

  .features article {
    min-height: 0;
  }

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