/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) var(--container-pad);
  background: transparent;
  transition: background var(--t-normal) var(--ease-out),
              box-shadow var(--t-normal) var(--ease-out),
              backdrop-filter var(--t-normal) var(--ease-out);
}

.navbar.scrolled {
  background: rgba(6, 13, 26, 0.90);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--color-border);
}

.navbar__logo {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.navbar__logo-name {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  letter-spacing: 0.04em;
  line-height: 1.2;
}

.navbar__logo-sub {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
}

.navbar__link {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  transition: color var(--t-fast) var(--ease-out);
  position: relative;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gradient-accent);
  transition: width var(--t-normal) var(--ease-out);
}

.navbar__link:hover,
.navbar__link:focus-visible {
  color: var(--color-text);
}

.navbar__link:hover::after { width: 100%; }

.navbar__cta {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-bg);
  background: var(--gradient-accent);
  padding: var(--sp-2) var(--sp-5);
  border-radius: var(--radius-sm);
  transition: opacity var(--t-fast) var(--ease-out), box-shadow var(--t-fast) var(--ease-out);
}

.navbar__cta:hover {
  opacity: 0.85;
  box-shadow: var(--shadow-glow);
  color: var(--color-bg);
}

.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-2);
  cursor: pointer;
}

.navbar__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-pill);
  transition: transform var(--t-normal) var(--ease-out),
              opacity var(--t-normal) var(--ease-out);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
}

.hero__bg-fluid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero__blob1,
.hero__blob2 {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}

.hero__blob1 {
  width: 600px;
  height: 500px;
  top: -10%;
  right: -5%;
  background: radial-gradient(ellipse, rgba(30,144,255,0.18) 0%, transparent 70%);
}

.hero__blob2 {
  width: 400px;
  height: 400px;
  bottom: 10%;
  left: -5%;
  background: radial-gradient(ellipse, rgba(0,212,255,0.12) 0%, transparent 70%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--sp-16);
  padding-top: 6rem;
}

.hero__left {}

.hero__eyebrow {
  display: inline-block;
  margin-bottom: var(--sp-6);
}

.hero__title {
  font-family: var(--font-mono);
  font-size: var(--fs-hero);
  font-weight: var(--fw-bold);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--sp-6);
}

.hero__desc {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  line-height: var(--lh-loose);
  max-width: 48ch;
  margin-bottom: var(--sp-10);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.hero__right {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.hero__illustration {
  width: 100%;
  max-width: 480px;
}

/* ===== STATS STRIP ===== */
.stats-strip {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--sp-12);
}

.stats-strip__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-8);
  text-align: center;
}

.stat__number {
  font-family: var(--font-mono);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--sp-2);
}

.stat__label {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* ===== ABOUT SPLIT ===== */
.about {
  background: var(--color-bg);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-20);
  align-items: center;
}

.about__visual {
  position: relative;
}

.about__card-stack {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

/* ===== SERVICES ===== */
.services {
  background: var(--color-bg-section);
  position: relative;
  overflow: hidden;
}

.services::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(30,144,255,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.services__header {
  text-align: center;
  margin-bottom: var(--sp-16);
  max-width: 56ch;
  margin-inline: auto;
  margin-bottom: var(--sp-16);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

/* ===== WHY US ===== */
.why {
  background: var(--color-bg);
}

.why__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-20);
  align-items: start;
}

.why__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
}

/* ===== CONTACT ===== */
.contact {
  background: var(--color-bg-section);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-20);
  align-items: start;
}

.contact__info-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
  margin-top: var(--sp-8);
}

.contact__info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
}

.contact__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  color: var(--color-secondary);
}

.contact__info-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-1);
}

.contact__info-value {
  font-size: var(--fs-sm);
  color: var(--color-text);
  line-height: var(--lh-normal);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-block: var(--sp-12);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-8);
  flex-wrap: wrap;
}

.footer__brand {}

.footer__brand-en {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}

.footer__brand-cn {
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
  margin-top: var(--sp-1);
}

.footer__links {
  display: flex;
  gap: var(--sp-6);
}

.footer__link {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.footer__copy {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
  text-align: right;
}