/* ===== First frame anti-flash ===== */
html,
body {
  background-color: #0a0a0a;
}

/* ===== Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ===== Base ===== */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #ffffff;
  overflow-x: hidden;

  /* subtle grain */
  background-image:
    radial-gradient(rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 3px 3px;
}

/* ============================= */
/* ===== Hero ================== */
/* ============================= */

.hero {
  min-height: 100vh;
  padding: 180px 6% 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;

  background:
    radial-gradient(
      circle at 25% 30%,
      rgba(255, 255, 255, 0.06),
      transparent 45%
    ),
    radial-gradient(
      circle at 75% 70%,
      rgba(255, 255, 255, 0.04),
      transparent 50%
    ),
    linear-gradient(to bottom, #000000, #0f0f0f);

  background-size: 200% 200%;
  animation: heroGlow 18s ease-in-out infinite;
}

@keyframes heroGlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

/* ===== Logo ===== */
.logo-mark img {
  width: 90px;
  height: auto;
  margin-bottom: 12px;
  opacity: 0.95;
}

/* ===== Title ===== */
.hero h1 {
  font-size: 48px;
  font-weight: 500;
  letter-spacing: 1px;
}

/* ===== Tagline ===== */
.tagline {
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #b5b5b5;
}

.sub {
  font-size: 13px;
  color: #8a8a8a;
  max-width: 480px;
  line-height: 1.6;
}

/* ============================= */
/* ===== Brand Values ========== */
/* ============================= */

.values {
  background: #0e0e0e;
  padding: 200px 0 180px;   /* ⬅ 拉开与 Hero / Footer 的节奏 */
  position: relative;
  z-index: 1;
}

.values-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 8%;

  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 80px;
  text-align: center;      /* ⬅ 让第二屏真正“居中” */
}

.value-item h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 16px;
  color: #ffffff;
}

.value-item p {
  font-size: 14px;
  line-height: 1.8;
  color: #9a9a9a;
}

/* ============================= */
/* ===== Footer ================= */
/* ============================= */

.site-footer {
  background: #050505;
  padding: 160px 0 100px;  /* ⬅ 强制新一屏的感觉 */
  width: 100%;
  display: block;
  position: relative;
  z-index: 2;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 8%;

  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
}

.footer-brand h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 13px;
  color: #8a8a8a;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.footer-meta p {
  font-size: 12px;
  color: #666;
  line-height: 1.6;
  text-align: right;
}

/* ============================= */
/* ===== Responsive ============= */
/* ============================= */

@media (max-width: 900px) {

  .hero h1 {
    font-size: 36px;
  }

  .logo-mark img {
    width: 72px;
  }

  .values {
    padding: 120px 6% 100px;
  }

  .values-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: left;
  }

  .site-footer {
    padding: 100px 0 80px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
  }

  .footer-meta p {
    text-align: left;
  }
}
/* ===== Structural safety ===== */
body {
  display: block;
}

.hero,
.values,
.site-footer {
  width: 100%;
  display: block;
  position: relative;
}