* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: #0f1115;
  color: #e9eef7;
  line-height: 1.65;
}

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

img {
  max-width: 100%;
  border-radius: 10px;
  display: block;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: saturate(180%) blur(12px);
  background: linear-gradient(180deg, rgba(15, 17, 21, .85), rgba(15, 17, 21, .55));
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: .2px;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, #FF7A59, #FF4B91 50%, #7A77FF);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

.nav ul {
  list-style: none;
  display: flex;
  gap: 18px;
  padding: 0;
  margin: 0;
}

.nav a {
  color: #aab3c5;
  font-weight: 600;
}

.nav a:hover {
  color: #e9eef7;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .12);
  background: transparent;
  color: #e9eef7;
  cursor: pointer;
}

.btn:hover {
  background: rgba(255, 255, 255, .06);
}

.btn-primary {
  background: linear-gradient(135deg, #FF7A59, #FF4B91);
  border: none;
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.hero {
  position: relative;
  overflow: clip;
}

.hero-wrap {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 36px;
  align-items: center;
  padding: 56px 0 36px;
}

.eyebrow {
  color: #aab3c5;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .8rem;
}

.header--h1 {
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1.15;
  margin: 8px 0 14px;
}

.lead {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: #aab3c5;
  margin-bottom: 22px;
}

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

.hero-card {
  position: relative;
  border-radius: 14px;
  background: radial-gradient(1200px 400px at 20% -10%, rgba(255, 120, 90, .25), transparent), #121621;
  padding: 14px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

.hero-card img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: 10px;
}

.hero-caption {
  position: absolute;
  left: 18px;
  bottom: 16px;
  background: rgba(0, 0, 0, .45);
  padding: 8px 12px;
  border-radius: 10px;
  font-weight: 600;
}

.section {
  padding: 36px 0;
}

.section h2 {
  margin: 0 0 10px;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
}

.section p.sec-lead {
  color: #aab3c5;
  margin-top: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card {
  background: #121621;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
  transition: transform .2s ease, background .2s ease;
}

.card:hover {
  transform: translateY(-3px);
  background: #171c29;
}

.card-body {
  padding: 14px 14px 16px;
}

.chip {
  display: inline-block;
  font-size: .8rem;
  padding: 4px 9px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 999px;
  color: #aab3c5;
}

.tips {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.tip-box {
  background: linear-gradient(180deg, rgba(255, 75, 75, .08), transparent 60%), #121621;
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

footer {
  border-top: 1px solid rgba(255, 255, 255, .08);
  color: #aab3c5;
}

.foot-inner {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 22px 0;
  flex-wrap: wrap;
}

#toTop {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 50;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-wrap {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 560px) {
  .grid {
    grid-template-columns: 1fr;
  }
}