:root {
  color: #0b2548;
  font-family:
    "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  --header-height: 96px;
  --primary: #2466f5;
  --primary-deep: #173fbc;
  --cyan: #21c9d2;
  --text: #0b2548;
  --muted: #61718c;
  --line: rgba(38, 93, 186, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-snap-type: y proximity;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: #f7faff;
  overflow-x: hidden;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(24px, 6vw, 100px);
  background: rgba(250, 252, 255, 0.78);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  transition:
    background 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-color: var(--line);
  box-shadow: 0 12px 35px rgba(30, 70, 140, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand img {
  display: block;
  width: clamp(340px, 31vw, 470px);
  height: 76px;
  object-fit: contain;
  object-position: left center;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(24px, 3vw, 52px);
}

.nav-link {
  position: relative;
  padding: 29px 2px 25px;
  color: #53627a;
  font-size: 16px;
  transition: color 0.2s ease;
}

.nav-link::after {
  position: absolute;
  right: 0;
  bottom: 17px;
  left: 0;
  height: 2px;
  content: "";
  background: linear-gradient(90deg, var(--primary), var(--cyan));
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  transform: scaleX(1);
}

.page-section {
  position: relative;
  min-height: 100vh;
  scroll-snap-align: start;
  overflow: hidden;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(420px, 0.9fr) minmax(500px, 1.1fr);
  align-items: center;
  padding: calc(var(--header-height) + 48px) clamp(24px, 6vw, 100px) 64px;
  background:
    linear-gradient(90deg, rgba(248, 251, 255, 0.99) 0%, rgba(244, 248, 255, 0.96) 42%, rgba(239, 245, 255, 0.72) 100%);
}

.hero-section::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  opacity: 0.43;
  background-image:
    linear-gradient(rgba(55, 108, 211, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(55, 108, 211, 0.055) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(90deg, black, transparent 75%);
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 700px;
  animation: fade-up 0.85s ease both;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 22px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.eyebrow span {
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
}

.hero-content h1 {
  margin: 0;
  color: #112c55;
  font-size: clamp(42px, 5vw, 76px);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.045em;
}

.hero-content h1 strong {
  color: transparent;
  font-weight: 700;
  background: linear-gradient(105deg, #143fae 4%, #2770f4 50%, #20bccb 98%);
  background-clip: text;
}

.hero-content h1 strong span {
  white-space: nowrap;
}

.hero-description {
  margin: 28px 0 36px;
  color: var(--muted);
  font-size: clamp(16px, 1.35vw, 20px);
  line-height: 2;
}

.primary-action {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  padding: 15px 22px 15px 26px;
  color: #fff;
  font-size: 15px;
  background: linear-gradient(115deg, var(--primary-deep), var(--primary), #28b8ce);
  border-radius: 8px;
  box-shadow: 0 16px 35px rgba(36, 102, 245, 0.24);
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.primary-action span {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 50%;
}

.primary-action:hover {
  box-shadow: 0 20px 40px rgba(36, 102, 245, 0.34);
  transform: translateY(-2px);
}

.hero-visual {
  position: absolute;
  z-index: 1;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  width: 64%;
  overflow: hidden;
  animation: fade-in 1.1s ease both;
}

.hero-visual::before {
  position: absolute;
  z-index: 2;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, #f7faff 0%, rgba(247, 250, 255, 0.88) 13%, rgba(247, 250, 255, 0.08) 52%, transparent 100%);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.03);
}

.hero-glow,
.about-decoration {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(2px);
}

.hero-glow-one {
  z-index: 2;
  top: 16%;
  left: 39%;
  width: 260px;
  height: 260px;
  background: rgba(74, 202, 240, 0.15);
  filter: blur(50px);
}

.hero-glow-two {
  z-index: 2;
  bottom: 8%;
  left: 10%;
  width: 180px;
  height: 180px;
  background: rgba(83, 77, 255, 0.1);
  filter: blur(48px);
}

.scroll-hint {
  position: absolute;
  z-index: 4;
  bottom: 24px;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #7c8ca4;
  font-size: 12px;
  letter-spacing: 0.08em;
  transform: translateX(-50%);
}

.scroll-hint span {
  position: relative;
  width: 17px;
  height: 27px;
  border: 1px solid #9eabc0;
  border-radius: 10px;
}

.scroll-hint span::after {
  position: absolute;
  top: 5px;
  left: 7px;
  width: 2px;
  height: 5px;
  content: "";
  background: var(--primary);
  border-radius: 2px;
  animation: scroll-dot 1.8s ease-in-out infinite;
}

.capabilities-section {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: calc(var(--header-height) + 42px) clamp(24px, 6vw, 100px) 70px;
  background:
    radial-gradient(circle at 50% 0%, rgba(63, 109, 255, 0.13), transparent 34%),
    linear-gradient(180deg, #f9fbff 0%, #f3f7ff 54%, #f8fbff 100%);
}

.capabilities-section::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  opacity: 0.42;
  background-image: radial-gradient(rgba(50, 105, 220, 0.18) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, transparent, black 24%, transparent 92%);
}

.section-heading {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin-bottom: clamp(34px, 5vh, 58px);
  text-align: center;
}

.section-heading .eyebrow {
  justify-content: center;
}

.section-heading h2 {
  margin: 0 0 18px;
  color: #102d59;
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.section-heading > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: clamp(15px, 1.2vw, 18px);
  line-height: 1.8;
}

.about-section {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: calc(var(--header-height) + 48px) clamp(24px, 7vw, 120px) 0;
  background:
    radial-gradient(circle at 85% 20%, rgba(53, 121, 250, 0.11), transparent 30%),
    radial-gradient(circle at 12% 82%, rgba(25, 204, 203, 0.1), transparent 28%),
    #fff;
}

.about-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(320px, 0.85fr) minmax(500px, 1.15fr);
  gap: clamp(60px, 10vw, 160px);
  align-items: center;
  width: min(1380px, 100%);
  margin: auto;
}

.about-heading h2 {
  margin: 0 0 28px;
  color: #102d59;
  font-size: clamp(42px, 5vw, 72px);
  line-height: 1;
  letter-spacing: -0.04em;
}

.about-heading > p:last-child {
  max-width: 600px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(16px, 1.25vw, 19px);
  line-height: 2.05;
}

.business-contact {
  display: inline-flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 8px;
  margin-top: 34px;
  padding-left: 18px;
  border-left: 3px solid var(--primary);
}

.business-contact span {
  color: #7a899f;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.business-contact strong {
  color: #163f91;
  font-size: clamp(23px, 2vw, 30px);
  font-weight: 650;
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
}

.business-contact:hover strong {
  color: var(--primary);
}

.capability-list {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2vw, 28px);
  width: min(1380px, 100%);
}

.capability-card {
  min-width: 0;
  padding: 12px 12px 26px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 18px 50px rgba(41, 78, 144, 0.09);
  transition:
    border-color 0.25s ease,
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.capability-card:hover {
  border-color: rgba(36, 102, 245, 0.35);
  box-shadow: 0 20px 45px rgba(41, 78, 144, 0.11);
  transform: translateY(-8px);
}

.capability-visual {
  position: relative;
  aspect-ratio: 1.55 / 1;
  overflow: hidden;
  background: #eef4ff;
  border-radius: 14px;
}

.capability-visual::after {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background: linear-gradient(135deg, transparent 52%, rgba(25, 77, 182, 0.12));
}

.capability-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.capability-card:hover .capability-visual img {
  transform: scale(1.045);
}

.capability-number {
  position: absolute;
  z-index: 2;
  right: 10px;
  bottom: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 24px;
  padding: 0 9px;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  background: linear-gradient(110deg, rgba(30, 82, 204, 0.92), rgba(35, 184, 205, 0.92));
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 20px;
  box-shadow: 0 6px 15px rgba(25, 77, 182, 0.2);
  backdrop-filter: blur(8px);
}

.capability-content {
  padding: 24px 12px 0;
}

.capability-card h3 {
  margin: 0 0 12px;
  color: #18365f;
  font-size: clamp(19px, 1.6vw, 24px);
}

.capability-card p {
  margin: 0;
  color: #718096;
  font-size: 15px;
  line-height: 1.8;
}

.section-next {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: clamp(28px, 4vh, 46px);
  color: #62738e;
  font-size: 13px;
  transition: color 0.2s ease;
}

.section-next span {
  color: var(--primary);
}

.section-next:hover {
  color: var(--primary);
}

.about-values {
  position: relative;
  display: grid;
  gap: 4px;
  padding: 34px 38px;
  overflow: hidden;
  background: rgba(248, 251, 255, 0.85);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 22px 60px rgba(37, 76, 142, 0.08);
}

.about-values > img {
  position: absolute;
  top: -50px;
  right: -45px;
  width: 210px;
  height: 210px;
  object-fit: contain;
  opacity: 0.055;
}

.value-item {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 20px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
}

.value-item:last-child {
  border-bottom: 0;
}

.value-item > span {
  padding-top: 4px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.value-item h3 {
  margin: 0 0 7px;
  color: #18365f;
  font-size: 19px;
}

.value-item p {
  margin: 0;
  color: #718096;
  font-size: 14px;
  line-height: 1.7;
}

.about-decoration-one {
  top: 15%;
  right: 5%;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(36, 102, 245, 0.08);
  box-shadow:
    0 0 0 45px rgba(36, 102, 245, 0.025),
    0 0 0 90px rgba(36, 102, 245, 0.018);
}

.site-footer {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 68px;
  margin-top: 50px;
  padding: 18px 0;
  color: #8491a5;
  font-size: 13px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  transition: color 0.2s ease;
}

.site-footer a:hover {
  color: var(--primary);
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes scroll-dot {
  0%,
  100% {
    opacity: 0.25;
    transform: translateY(0);
  }
  50% {
    opacity: 1;
    transform: translateY(8px);
  }
}

@media (max-width: 980px) {
  :root {
    --header-height: 78px;
  }

  .site-header {
    padding: 0 22px;
  }

  .brand img {
    width: 290px;
    height: 58px;
  }

  .site-nav {
    gap: 20px;
  }

  .nav-link {
    padding-top: 24px;
    padding-bottom: 21px;
  }

  .nav-link::after {
    bottom: 12px;
  }

  .hero-section {
    display: flex;
    align-items: flex-end;
    padding: calc(var(--header-height) + 48px) 40px 95px;
  }

  .hero-visual {
    width: 100%;
    opacity: 0.64;
  }

  .hero-visual::before {
    background:
      linear-gradient(0deg, #f7faff 0%, rgba(247, 250, 255, 0.88) 35%, rgba(247, 250, 255, 0.1) 100%),
      linear-gradient(90deg, rgba(247, 250, 255, 0.72), transparent);
  }

  .hero-content {
    max-width: 650px;
  }

  .about-layout {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .capabilities-section {
    min-height: auto;
    padding-right: 40px;
    padding-bottom: 82px;
    padding-left: 40px;
  }

  .capability-list {
    gap: 16px;
  }

  .capability-card {
    padding: 10px 10px 20px;
  }

  .capability-content {
    padding: 18px 8px 0;
  }

  .capability-card p {
    font-size: 13px;
  }

  .about-section {
    height: auto;
    min-height: 100vh;
    padding-right: 40px;
    padding-left: 40px;
  }
}

@media (max-width: 680px) {
  html {
    scroll-snap-type: none;
  }

  .site-header {
    height: 68px;
    padding: 0 16px;
  }

  .brand img {
    width: 138px;
    height: 46px;
  }

  .site-nav {
    gap: 10px;
  }

  .nav-link {
    padding: 23px 0 19px;
    font-size: 12px;
  }

  .hero-section {
    min-height: 760px;
    padding: 120px 22px 92px;
  }

  .hero-content h1 {
    font-size: clamp(38px, 11vw, 54px);
    line-height: 1.24;
  }

  .hero-description {
    margin: 24px 0 30px;
    font-size: 15px;
    line-height: 1.85;
  }

  .desktop-only {
    display: none;
  }

  .eyebrow {
    margin-bottom: 16px;
    font-size: 11px;
  }

  .hero-visual {
    top: 66px;
    height: 52%;
  }

  .hero-visual img {
    object-position: 66% center;
  }

  .hero-visual::before {
    background: linear-gradient(0deg, #f7faff 3%, rgba(247, 250, 255, 0.84) 48%, rgba(247, 250, 255, 0.16) 100%);
  }

  .about-section {
    padding: 118px 22px 0;
  }

  .capabilities-section {
    padding: 108px 22px 74px;
  }

  .section-heading {
    margin-bottom: 30px;
  }

  .section-heading h2 {
    font-size: 36px;
  }

  .capability-list {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .capability-card {
    display: grid;
    grid-template-columns: 42% 1fr;
    align-items: center;
    padding: 9px 14px 9px 9px;
  }

  .capability-visual {
    height: 110px;
    aspect-ratio: auto;
  }

  .capability-content {
    padding: 4px 0 4px 16px;
  }

  .capability-card p {
    font-size: 12px;
    line-height: 1.65;
  }

  .about-heading h2 {
    margin-bottom: 22px;
    font-size: 44px;
  }

  .about-heading > p:last-child {
    font-size: 15px;
    line-height: 1.9;
  }

  .capability-card h3 {
    margin-bottom: 7px;
    font-size: 16px;
  }

  .about-values {
    padding: 24px 22px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    margin-top: 45px;
    padding: 20px 0 24px;
    line-height: 1.6;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}