:root {
  --ink: #13233a;
  --ink-strong: #0e2340;
  --muted: #66778d;
  --blue: #176bff;
  --shadow: 0 18px 42px rgba(31, 76, 133, 0.08);
  --font: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --pad-x: clamp(1rem, 4vw, 3.5rem);
  --content: min(1080px, 100%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  color: var(--ink);
  font-family: var(--font);
  background: #ffffff;
  overflow-x: hidden;
}

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

img {
  display: block;
  max-width: 100%;
  height: auto;
}

.hero-shell {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  min-height: 100dvh;
  color: #fff;
  overflow: hidden;
}

.topbar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  padding:
    max(0.85rem, env(safe-area-inset-top))
    max(var(--pad-x), env(safe-area-inset-right))
    0.85rem
    max(var(--pad-x), env(safe-area-inset-left));
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: clamp(0.95rem, 2.5vw, 1.05rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #fff;
  text-shadow: 0 2px 10px rgba(0, 30, 90, 0.25);
}

.brand-mark img {
  width: clamp(30px, 8vw, 36px);
  height: clamp(30px, 8vw, 36px);
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 4px 14px rgba(0, 30, 90, 0.25);
  flex-shrink: 0;
}

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding:
    clamp(4.5rem, 12vh, 6rem)
    max(var(--pad-x), env(safe-area-inset-left))
    clamp(5rem, 14vh, 7.5rem)
    max(var(--pad-x), env(safe-area-inset-right));
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-color: #0057e6;
  background-image:
    radial-gradient(ellipse 55% 48% at 50% 38%, rgba(90, 180, 255, 0.28), transparent 70%),
    radial-gradient(ellipse 40% 35% at 85% 18%, rgba(46, 214, 177, 0.3), transparent 60%),
    radial-gradient(ellipse 42% 38% at 8% 82%, rgba(0, 40, 160, 0.4), transparent 55%),
    linear-gradient(165deg, #003db8 0%, #0668f0 46%, #0e9dff 100%);
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(48px);
  opacity: 0.4;
  animation: drift 14s ease-in-out infinite;
}

.blob-a {
  width: min(42vw, 360px);
  height: min(42vw, 360px);
  top: 12%;
  left: -6%;
  background: #2cd6b1;
}

.blob-b {
  width: min(48vw, 400px);
  height: min(48vw, 400px);
  right: -8%;
  bottom: 16%;
  background: #5eb0ff;
  animation-delay: -5s;
}

.grid-fade {
  position: absolute;
  inset: 0;
  opacity: 0.05;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.8) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.8) 1px, transparent 1px);
  background-size: clamp(36px, 6vw, 56px) clamp(36px, 6vw, 56px);
  mask-image: radial-gradient(ellipse 65% 55% at 50% 42%, #000 15%, transparent 72%);
}

.hero-stage {
  position: relative;
  z-index: 1;
  width: min(640px, 100%);
  padding-inline: 0.25rem;
  text-align: center;
  animation: rise 0.9s ease-out both;
}

.logo-stack {
  position: relative;
  width: clamp(120px, 34vw, 210px);
  height: clamp(120px, 34vw, 210px);
  margin: 0 auto clamp(1.1rem, 3vh, 1.75rem);
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  pointer-events: none;
}

.ring-1 {
  inset: clamp(-10px, -3vw, -16px);
  animation: ring-pulse 4.5s ease-out infinite;
}

.ring-2 {
  inset: clamp(-22px, -6vw, -34px);
  border-color: rgba(127, 236, 210, 0.35);
  animation: ring-pulse 4.5s ease-out 0.9s infinite;
}

.ring-3 {
  inset: clamp(-34px, -9vw, -52px);
  border-color: rgba(255, 255, 255, 0.2);
  animation: ring-pulse 4.5s ease-out 1.8s infinite;
}

.hero-logo {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  background: #ffffff;
  box-shadow:
    0 24px 50px rgba(2, 30, 100, 0.28),
    0 0 0 clamp(6px, 1.5vw, 10px) rgba(255, 255, 255, 0.55),
    0 0 40px rgba(63, 214, 200, 0.28);
  animation: logo-float 5.5s ease-in-out infinite;
}

.brand {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 9vw, 4.4rem);
  font-weight: 800;
  letter-spacing: clamp(0.06em, 1.5vw, 0.14em);
  line-height: 1.15;
  color: #ffffff;
  text-shadow: 0 8px 28px rgba(0, 28, 90, 0.35);
  word-break: keep-all;
}

.brand-sub {
  margin: 0 0 clamp(0.85rem, 2vh, 1.2rem);
  color: #d7f4ff;
  font-size: clamp(0.88rem, 3.2vw, 1.22rem);
  font-weight: 700;
  letter-spacing: clamp(0.08em, 1.8vw, 0.24em);
  text-shadow: 0 4px 16px rgba(0, 28, 90, 0.25);
  word-break: keep-all;
}

.lead {
  margin: 0 auto;
  max-width: min(26rem, 100%);
  padding-inline: 0.15rem;
  font-size: clamp(0.92rem, 3.4vw, 1.1rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 2px 12px rgba(0, 28, 90, 0.22);
}

.hero-wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  z-index: 2;
  line-height: 0;
}

.hero-wave svg {
  display: block;
  width: 100%;
  height: clamp(48px, 10vw, 120px);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes logo-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes ring-pulse {
  0% {
    transform: scale(0.94);
    opacity: 0.65;
  }
  75% {
    transform: scale(1.08);
    opacity: 0;
  }
  100% {
    transform: scale(1.08);
    opacity: 0;
  }
}

@keyframes drift {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(16px, -12px);
  }
}

.section {
  padding: clamp(2.2rem, 6vw, 4.8rem) var(--pad-x);
}

.section-inner {
  width: var(--content);
  max-width: 1080px;
  margin: 0 auto;
}

.section h2 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.35rem, 4.5vw, 1.95rem);
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--ink-strong);
}

.section-desc,
.about p {
  margin: 0;
  max-width: 44rem;
  color: var(--muted);
  font-size: clamp(0.95rem, 2.8vw, 1.03rem);
  line-height: 1.8;
}

.about {
  background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
  padding-top: clamp(1rem, 3vw, 1.2rem);
}

.capabilities {
  background:
    radial-gradient(circle at 88% 18%, rgba(82, 158, 255, 0.12), transparent 30%),
    radial-gradient(circle at 8% 76%, rgba(44, 214, 177, 0.08), transparent 30%),
    linear-gradient(180deg, #f7fbff 0%, #eef3fa 100%);
}

.capabilities .section-desc {
  margin-bottom: clamp(1.2rem, 3vw, 1.8rem);
}

.cap-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.75rem, 2vw, 1rem);
}

.cap-list li {
  padding: clamp(1.1rem, 2.5vw, 1.35rem) clamp(1rem, 2vw, 1.2rem);
  border-radius: clamp(14px, 2vw, 20px);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
  border: 1px solid rgba(185, 211, 255, 0.5);
  min-width: 0;
}

.cap-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 0.85rem;
  border-radius: 14px;
  color: #fff;
  font-size: 0.86rem;
  font-weight: 800;
}

.cap-list li:nth-child(1) .cap-icon {
  background: linear-gradient(145deg, #4f9dff, #176bff);
}

.cap-list li:nth-child(2) .cap-icon {
  background: linear-gradient(145deg, #35d99b, #11ad78);
}

.cap-list li:nth-child(3) .cap-icon {
  background: linear-gradient(145deg, #39a3ff, #10b2ff);
}

.cap-list h3 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.02rem, 2.5vw, 1.1rem);
  font-weight: 800;
  color: #1e3048;
}

.cap-list p {
  margin: 0;
  color: #7a879a;
  line-height: 1.7;
  font-size: clamp(0.9rem, 2.4vw, 0.95rem);
}

.footer {
  border-top: 1px solid rgba(185, 211, 255, 0.55);
  padding:
    1.4rem
    max(var(--pad-x), env(safe-area-inset-right))
    max(1.6rem, env(safe-area-inset-bottom))
    max(var(--pad-x), env(safe-area-inset-left));
  background: rgba(255, 255, 255, 0.9);
}

.footer-inner {
  width: var(--content);
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.footer-brand img {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: 50%;
  flex-shrink: 0;
}

.footer-brand strong {
  display: block;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--ink-strong);
}

.footer-brand span {
  color: var(--blue);
  font-size: 0.88rem;
  font-weight: 600;
}

.footer p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(0.82rem, 2.5vw, 0.9rem);
}

/* tablet */
@media (max-width: 960px) {
  .cap-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cap-list li:last-child {
    grid-column: 1 / -1;
  }
}

/* phone */
@media (max-width: 640px) {
  .cap-list,
  .cap-list li:last-child {
    grid-template-columns: 1fr;
    grid-column: auto;
  }

  .brand {
    letter-spacing: 0.08em;
  }

  .brand-sub {
    letter-spacing: 0.1em;
  }

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

  .blob {
    filter: blur(36px);
    opacity: 0.32;
  }
}

/* short screens / landscape phones */
@media (max-height: 620px) {
  .hero,
  .hero-shell {
    min-height: auto;
  }

  .hero {
    padding-top: 4.2rem;
    padding-bottom: 4.5rem;
  }

  .logo-stack {
    width: clamp(96px, 22vh, 140px);
    height: clamp(96px, 22vh, 140px);
    margin-bottom: 0.9rem;
  }

  .brand {
    font-size: clamp(1.8rem, 7vw, 2.6rem);
  }

  .lead {
    font-size: 0.92rem;
    line-height: 1.6;
  }

  .hero-wave svg {
    height: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}