:root {
  --bg: #020713;
  --deep: #050b1d;
  --panel: rgba(7, 20, 48, 0.72);
  --panel-strong: rgba(8, 25, 60, 0.88);
  --cyan: #18d8ff;
  --blue: #1777ff;
  --purple: #8b5cff;
  --pink: #ff4ddb;
  --text: #eaf6ff;
  --muted: #9fb3d1;
  --line: rgba(75, 196, 255, 0.28);
  --line-bright: rgba(24, 216, 255, 0.72);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 0%, rgba(24, 216, 255, 0.13), transparent 34rem),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 255, 0.16), transparent 36rem),
    var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  overflow-x: hidden;
}

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

.text-nowrap {
  white-space: nowrap;
}

button,
input,
textarea {
  font: inherit;
}

/* 顶部导航 */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: 82px;
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 0 clamp(24px, 5vw, 76px);
  background:
    linear-gradient(to bottom, rgba(1, 6, 18, 0.9), rgba(1, 6, 18, 0.58));
  border-bottom: 1px solid rgba(88, 189, 255, 0.2);
  backdrop-filter: blur(16px);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.55;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 270px;
}

.brand img {
  width: 66px;
  height: 66px;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(24, 216, 255, 0.65));
}

.brand strong {
  display: block;
  font-size: 20px;
  line-height: 1;
}

.brand small {
  display: block;
  margin-top: 4px;
  max-width: 245px;
  color: #a9bad7;
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  gap: clamp(18px, 2.4vw, 40px);
}

.site-nav a {
  position: relative;
  color: #d6e2f6;
  font-size: 15px;
  font-weight: 600;
  transition: 0.25s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -28px;
  width: 0;
  height: 2px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  box-shadow: 0 0 18px var(--cyan);
  transition: 0.25s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: #fff;
  text-shadow: 0 0 18px rgba(24, 216, 255, 0.75);
}

.site-nav a:hover::after,
.site-nav a.active::after {
  width: 120%;
}

.header-btn,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  color: #fff;
  font-weight: 800;
  border: 1px solid rgba(24, 216, 255, 0.42);
  transition: 0.25s ease;
}

.header-btn {
  width: 118px;
  height: 44px;
  background: linear-gradient(135deg, #146cff, #1bd7ff);
  box-shadow: 0 0 30px rgba(24, 216, 255, 0.28);
}

.btn {
  min-width: 142px;
  height: 52px;
  padding: 0 28px;
}

.btn.primary {
  background: linear-gradient(135deg, #1767ff, #18d8ff);
  box-shadow: 0 16px 44px rgba(24, 216, 255, 0.28);
}

.btn.outline {
  background: rgba(3, 10, 27, 0.52);
  border-color: rgba(214, 238, 255, 0.32);
}

.btn:hover,
.header-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 54px rgba(24, 216, 255, 0.34);
}

.full {
  width: 100%;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 40px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(4, 14, 36, 0.72);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: #fff;
}

/* 全屏主视觉 */

.hero-full {
  position: relative;
  min-height: 100vh;
  padding: 128px clamp(24px, 8vw, 120px) 80px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-image:
    linear-gradient(90deg,
      rgba(2, 7, 19, 0.96) 0%,
      rgba(2, 7, 19, 0.78) 28%,
      rgba(2, 7, 19, 0.38) 54%,
      rgba(2, 7, 19, 0.22) 74%,
      rgba(2, 7, 19, 0.72) 100%
    ),
    linear-gradient(0deg,
      rgba(2, 7, 19, 1) 0%,
      rgba(2, 7, 19, 0.22) 28%,
      rgba(2, 7, 19, 0) 58%
    ),
    url("assets/hero-anime.png");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}

.hero-full::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(circle at 72% 40%, rgba(24, 216, 255, 0.13), transparent 28rem),
    radial-gradient(circle at 90% 80%, rgba(139, 92, 255, 0.24), transparent 32rem),
    repeating-linear-gradient(
      90deg,
      transparent 0 86px,
      rgba(24, 216, 255, 0.045) 87px 88px
    );
}

.hero-full::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  z-index: 2;
  height: 160px;
  pointer-events: none;
  background: linear-gradient(to bottom, transparent, var(--bg));
}

.hero-content {
  position: relative;
  z-index: 3;
  width: min(650px, 100%);
  animation: fadeUp 0.9s ease both;
}

.hero-label {
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.28em;
  text-shadow: 0 0 18px rgba(24, 216, 255, 0.85);
}

.hero-content h1 {
  margin: 0;
  font-size: clamp(46px, 6.6vw, 92px);
  line-height: 1.02;
  letter-spacing: -0.06em;
  color: #f2fbff;
  text-shadow:
    0 0 22px rgba(24, 216, 255, 0.42),
    0 8px 28px rgba(0, 0, 0, 0.55);
}

.hero-typing {
  display: inline-block;
  white-space: nowrap;
}

.hero-cursor {
  display: inline-block;
  width: 0.08em;
  height: 0.9em;
  margin-left: 0.08em;
  transform: translateY(0.08em);
  background: currentColor;
  box-shadow: 0 0 18px rgba(24, 216, 255, 0.75);
  animation: cursorBlink 0.86s steps(2, start) infinite;
}

.hero-desc {
  width: min(600px, 100%);
  margin: 28px 0 36px;
  color: #c8d8f0;
  font-size: 18px;
  line-height: 1.9;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.55);
}

.hero-desc strong {
  color: #fff;
  font-size: inherit;
  font-weight: 900;
}

.hero-actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.scroll-tip {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(220, 242, 255, 0.72);
  font-size: 12px;
  letter-spacing: 0.24em;
}

.scroll-tip i {
  width: 34px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  animation: scrollLine 1.5s ease infinite;
}

/* 通用内容区 */

.section-block {
  position: relative;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 88px 0 0;
}

.section-title {
  margin-bottom: 28px;
}

.section-title p {
  margin: 0 0 10px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.26em;
}

.section-title h2 {
  margin: 0;
  font-size: clamp(28px, 3vw, 40px);
}

.about-section {
  padding-top: 110px;
}

.about-section::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 36px;
  z-index: -1;
  width: 100vw;
  height: 650px;
  transform: translateX(-50%);
  background:
    radial-gradient(circle at 50% 22%, rgba(24, 216, 255, 0.2), transparent 20rem),
    radial-gradient(circle at 86% 30%, rgba(139, 92, 255, 0.18), transparent 20rem),
    radial-gradient(circle at 18% 58%, rgba(255, 77, 219, 0.1), transparent 18rem);
  pointer-events: none;
}

.about-hero {
  position: relative;
  text-align: center;
  padding: 6px 0 18px;
}

.about-title {
  margin-bottom: 20px;
}

.about-breathing-stage {
  position: relative;
  width: 100%;
  min-height: 310px;
  display: grid;
  place-items: center;
  margin: 0 auto;
  overflow: hidden;
}

.about-breathing-stage::before {
  content: "";
  position: absolute;
  inset: 28px;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(24, 216, 255, 0.18), transparent 46%),
    radial-gradient(circle, rgba(139, 92, 255, 0.16), transparent 64%);
  filter: blur(8px);
  animation: aboutBreath 4.2s ease-in-out infinite;
}

.about-breathing-stage::after {
  content: "";
  position: absolute;
  inset: 70px 12%;
  z-index: 1;
  border-radius: 999px;
  background:
    linear-gradient(90deg, transparent, rgba(24, 216, 255, 0.22), transparent),
    linear-gradient(rgba(24, 216, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 216, 255, 0.08) 1px, transparent 1px);
  background-size: auto, 34px 34px, 34px 34px;
  opacity: 0.36;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse, black 0 40%, transparent 70%);
  mask-image: radial-gradient(ellipse, black 0 42%, transparent 72%);
}

.about-breathing-stage h3 {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 3;
  width: max-content;
  margin: 0;
  color: #f6fcff;
  font-size: clamp(34px, 4.35vw, 64px);
  line-height: 1.12;
  font-weight: 900;
  text-align: center;
  white-space: nowrap;
  text-shadow:
    0 0 18px rgba(24, 216, 255, 0.72),
    0 0 54px rgba(139, 92, 255, 0.36),
    0 14px 38px rgba(0, 0, 0, 0.5);
  animation: aboutTextBreath 4.2s ease-in-out infinite;
}

.about-breathing-stage h3 span {
  display: inline;
}

.mobile-title-punctuation {
  display: inline;
}

.about-orbit,
.about-pulse-ring {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.about-orbit {
  border: 1px solid rgba(24, 216, 255, 0.22);
  transform: rotateX(66deg);
}

.about-orbit-1 {
  width: 82%;
  height: 82%;
  animation: aboutOrbit 14s linear infinite;
}

.about-orbit-2 {
  width: 62%;
  height: 62%;
  border-color: rgba(139, 92, 255, 0.24);
  animation: aboutOrbit 18s linear infinite reverse;
}

.about-orbit-3 {
  width: 42%;
  height: 42%;
  border-color: rgba(255, 77, 219, 0.18);
  animation: aboutOrbit 12s linear infinite;
}

.about-pulse-ring {
  z-index: 2;
  width: min(480px, 70%);
  aspect-ratio: 1;
  border: 1px solid rgba(24, 216, 255, 0.36);
  box-shadow:
    inset 0 0 38px rgba(24, 216, 255, 0.08),
    0 0 48px rgba(24, 216, 255, 0.18);
  animation: aboutRingBreath 4.2s ease-in-out infinite;
}

.about-main-desc {
  width: min(860px, 100%);
  margin: 8px auto 0;
  color: #d7e8ff;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 2;
}

.about-main-desc strong {
  color: #fff;
  font-weight: 900;
  text-shadow: 0 0 16px rgba(24, 216, 255, 0.55);
}

.about-copy,
.about-foundation,
.about-grid article {
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(10, 42, 96, 0.62), rgba(4, 12, 30, 0.78)),
    radial-gradient(circle at 88% 12%, rgba(24, 216, 255, 0.12), transparent 14rem);
  box-shadow: inset 0 0 34px rgba(24, 216, 255, 0.04);
}

.about-copy {
  padding: clamp(28px, 4vw, 48px);
  border-radius: 28px;
}

.about-copy h3 {
  margin: 0 0 18px;
  color: #f2fbff;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.18;
  text-shadow: 0 0 20px rgba(24, 216, 255, 0.24);
}

.about-copy p,
.about-foundation p,
.about-grid p {
  margin: 0;
  color: #aebfda;
  font-size: 15px;
  line-height: 1.9;
}

.about-copy p + p {
  margin-top: 14px;
}

.about-foundation {
  position: relative;
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(0, 1.18fr);
  gap: 24px;
  align-items: center;
  padding: 28px;
  border-radius: 22px;
  overflow: hidden;
}

.about-foundation::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -116px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(24, 216, 255, 0.16);
  border-radius: 50%;
  background:
    linear-gradient(rgba(24, 216, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 216, 255, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.32;
  pointer-events: none;
  z-index: 0;
}

.about-foundation-copy,
.about-foundation-metrics {
  position: relative;
  z-index: 1;
}

.about-foundation-copy > span {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.22em;
}

.about-foundation-copy h3 {
  margin: 0 0 12px;
  color: #f2fbff;
  font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1.16;
  text-shadow: 0 0 20px rgba(24, 216, 255, 0.22);
}

.about-foundation-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.about-foundation-metrics div {
  min-height: 118px;
  padding: 18px;
  border: 1px solid rgba(24, 216, 255, 0.22);
  border-radius: 16px;
  background: rgba(2, 8, 22, 0.36);
  box-shadow: inset 0 0 26px rgba(24, 216, 255, 0.04);
}

.about-foundation-metrics strong {
  display: block;
  margin-bottom: 10px;
  color: #fff;
  font-size: clamp(18px, 1.7vw, 24px);
  font-weight: 900;
  line-height: 1.2;
  text-shadow: 0 0 18px rgba(24, 216, 255, 0.42);
}

.about-foundation-metrics span {
  display: block;
  color: #9fb3d1;
  font-size: 13px;
  line-height: 1.65;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 32px 0 22px;
}

.about-grid article {
  padding: 26px;
  border-radius: 22px;
  transition: 0.25s ease;
}

.about-grid article:hover {
  transform: translateY(-5px);
  border-color: var(--line-bright);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
}

.about-grid span {
  display: inline-block;
  margin-bottom: 16px;
  color: transparent;
  -webkit-text-stroke: 1px rgba(24, 216, 255, 0.8);
  font-size: 42px;
  font-weight: 900;
  line-height: 1;
}

.about-grid h3 {
  margin: 0 0 12px;
  color: #f2fbff;
  font-size: 20px;
}

.about-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.card-icon {
  position: relative;
  width: 66px;
  height: 66px;
  border-radius: 18px;
  border: 1px solid rgba(24, 216, 255, 0.36);
  background: rgba(4, 15, 38, 0.68);
  box-shadow: 0 0 28px rgba(24, 216, 255, 0.16);
}

.card-icon::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 2px solid var(--cyan);
  box-shadow: 0 0 20px rgba(24, 216, 255, 0.75);
}

.card-icon.ai::before {
  border-radius: 50%;
}

.card-icon.shield::before {
  clip-path: polygon(50% 0, 100% 20%, 84% 80%, 50% 100%, 16% 80%, 0 20%);
  background: linear-gradient(135deg, var(--cyan), var(--purple));
}

.card-icon.cube::before {
  transform: rotate(45deg);
}

.card-icon.data::before {
  border-radius: 50% / 20%;
}

.contact-section {
  padding-bottom: 90px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.contact-info,
.contact-channels {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    linear-gradient(145deg, rgba(10, 42, 96, 0.66), rgba(4, 12, 30, 0.78));
}

.contact-info h3 {
  margin-top: 0;
}

.contact-info p {
  color: var(--muted);
  line-height: 1.8;
}

.contact-info a,
.contact-channel {
  color: inherit;
}

.contact-email {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  color: var(--muted);
  line-height: 1.8;
}

.contact-email span {
  white-space: nowrap;
}

.contact-email p {
  margin: 0;
}

.contact-channels {
  display: grid;
  gap: 16px;
}

.contact-channel {
  display: block;
  min-height: 132px;
  padding: 20px;
  border: 1px solid rgba(24, 216, 255, 0.22);
  border-radius: 18px;
  background: rgba(2, 8, 22, 0.36);
  transition: 0.25s ease;
}

.contact-channel:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.22);
}

.contact-channel span {
  display: block;
  margin-bottom: 10px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.contact-channel strong {
  display: block;
  margin-bottom: 10px;
  color: #f2fbff;
  font-size: 21px;
}

.contact-channel p {
  margin: 0;
  color: #aebfda;
  font-size: 14px;
  line-height: 1.8;
}

.feed-section {
  padding-top: 96px;
  padding-bottom: 96px;
}

.feed-section::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 46px;
  z-index: -1;
  width: 100vw;
  height: 520px;
  transform: translateX(-50%);
  background:
    radial-gradient(circle at 20% 28%, rgba(255, 77, 219, 0.14), transparent 18rem),
    radial-gradient(circle at 78% 18%, rgba(24, 216, 255, 0.16), transparent 20rem);
  pointer-events: none;
}

.feed-title {
  text-align: center;
}

.feed-title span {
  display: block;
  width: min(720px, 100%);
  margin: 16px auto 0;
  color: #a9bad7;
  font-size: 15px;
  line-height: 1.8;
}

.feed-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  width: min(980px, 100%);
  margin: 0 auto;
}

.feed-copy,
.feed-items article {
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(10, 42, 96, 0.64), rgba(4, 12, 30, 0.8)),
    radial-gradient(circle at 86% 16%, rgba(24, 216, 255, 0.12), transparent 14rem);
  box-shadow: inset 0 0 34px rgba(24, 216, 255, 0.04);
}

.feed-copy {
  padding: clamp(28px, 4vw, 46px);
  border-radius: 28px;
}

.feed-copy h3 {
  width: min(780px, 100%);
  margin: 0 0 18px;
  color: #f2fbff;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.16;
  text-shadow: 0 0 20px rgba(24, 216, 255, 0.24);
}

.feed-copy p,
.feed-items p {
  margin: 0;
  color: #aebfda;
  font-size: 15px;
  line-height: 1.9;
}

.feed-copy p + p {
  margin-top: 14px;
}

.feed-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.feed-items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(980px, 100%);
  gap: 18px;
  margin: 22px auto 0;
}

.feed-items article {
  padding: 26px;
  border-radius: 22px;
  transition: 0.25s ease;
}

.feed-items article:hover {
  transform: translateY(-5px);
  border-color: var(--line-bright);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
}

.feed-items span {
  display: inline-block;
  margin-bottom: 16px;
  color: transparent;
  -webkit-text-stroke: 1px rgba(24, 216, 255, 0.78);
  font-size: 42px;
  font-weight: 900;
  line-height: 1;
}

.feed-items h3 {
  margin: 0 0 12px;
  color: #f2fbff;
  font-size: 20px;
}

.site-footer {
  padding: 28px 20px;
  text-align: center;
  color: #7f91ad;
  background: rgba(1, 6, 18, 0.88);
  border-top: 1px solid rgba(88, 189, 255, 0.18);
}

.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
  width: 44px;
  height: 44px;
  display: none;
  place-items: center;
  border: 1px solid rgba(24, 216, 255, 0.4);
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, #1767ff, #18d8ff);
  cursor: pointer;
}

.back-top.show {
  display: grid;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollLine {
  0% {
    transform: scaleX(0.4);
    opacity: 0.35;
  }

  50% {
    transform: scaleX(1);
    opacity: 1;
  }

  100% {
    transform: scaleX(0.4);
    opacity: 0.35;
  }
}

@keyframes cursorBlink {
  0%, 48% {
    opacity: 1;
  }

  49%, 100% {
    opacity: 0;
  }
}

@keyframes aboutBreath {
  0%, 100% {
    opacity: 0.58;
    transform: scale(0.94);
  }

  50% {
    opacity: 1;
    transform: scale(1.08);
  }
}

@keyframes aboutTextBreath {
  0%, 100% {
    transform: translate(-50%, -50%) scale(0.985);
    text-shadow:
      0 0 14px rgba(24, 216, 255, 0.52),
      0 0 34px rgba(139, 92, 255, 0.26),
      0 14px 38px rgba(0, 0, 0, 0.5);
  }

  50% {
    transform: translate(-50%, -50%) scale(1.018);
    text-shadow:
      0 0 26px rgba(24, 216, 255, 0.96),
      0 0 72px rgba(139, 92, 255, 0.48),
      0 14px 38px rgba(0, 0, 0, 0.5);
  }
}

@keyframes aboutRingBreath {
  0%, 100% {
    opacity: 0.42;
    transform: scale(0.86);
  }

  50% {
    opacity: 0.95;
    transform: scale(1.04);
  }
}

@keyframes aboutOrbit {
  from {
    transform: rotateX(66deg) rotateZ(0deg);
  }

  to {
    transform: rotateX(66deg) rotateZ(360deg);
  }
}

/* 手机适配 */

@media (max-width: 1080px) {
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-foundation,
  .about-foundation-metrics {
    grid-template-columns: 1fr;
  }

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

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

  .brand {
    min-width: auto;
  }

  .brand small {
    max-width: 180px;
  }
}

@media (max-width: 860px) {
  .site-header {
    height: 72px;
    padding: 0 18px;
  }

  .brand small {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: 72px;
    left: 18px;
    right: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(2, 8, 22, 0.96);
    backdrop-filter: blur(18px);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 10px 4px;
  }

  .site-nav a::after {
    display: none;
  }

  .header-btn {
    display: none;
  }

  .hero-full {
    padding: 118px 22px 72px;
    background-position: 62% center;
  }

  .hero-content h1 {
    font-size: clamp(42px, 12vw, 62px);
  }

  .hero-desc {
    font-size: 16px;
  }

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

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

@media (max-width: 560px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .section-block {
    width: calc(100% - 28px);
    padding-top: 68px;
  }

  .about-breathing-stage {
    min-height: 280px;
  }

  .about-breathing-stage h3 {
    width: 100%;
    padding: 0 10px;
    font-size: clamp(28px, 7.8vw, 36px);
    line-height: 1.22;
    box-sizing: border-box;
    text-align: center;
    white-space: normal;
  }

  .about-breathing-stage h3 span {
    display: block;
  }

  .about-breathing-stage h3 .mobile-title-punctuation {
    display: none;
  }

  .about-main-desc {
    text-align: left;
  }

}

/* ===============================
   核心技术：科技展厅加强版
================================ */

.business-section {
  position: relative;
  padding-top: 110px;
  padding-bottom: 90px;
  overflow: hidden;
}

.business-section::before {
  content: none;
}

.business-section::after {
  content: none;
}

.business-bg-light {
  display: none;
}

.business-title {
  text-align: center;
  margin-bottom: 42px;
}

.business-title span {
  display: block;
  width: min(680px, 100%);
  margin: 16px auto 0;
  color: #a9bad7;
  font-size: 15px;
  line-height: 1.8;
}

.business-showcase {
  position: relative;
  min-height: 680px;
  display: grid;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
  gap: 26px;
  align-items: stretch;
}

.business-center {
  position: absolute;
  left: 50%;
  top: 52%;
  z-index: 5;
  width: 260px;
  height: 260px;
  transform: translate(-50%, -50%);
  display: grid;
  place-items: center;
  pointer-events: none;
}

.core-orb {
  position: relative;
  z-index: 4;
  width: 118px;
  height: 118px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 42%, #ffffff 0 4px, transparent 5px),
    radial-gradient(circle, rgba(24, 216, 255, 0.95), rgba(23, 103, 255, 0.72) 42%, rgba(139, 92, 255, 0.38) 72%);
  box-shadow:
    0 0 28px rgba(24, 216, 255, 0.9),
    0 0 72px rgba(24, 216, 255, 0.46),
    0 0 120px rgba(139, 92, 255, 0.3);
}

.core-orb::before {
  content: "";
  position: absolute;
  inset: -16px;
  border-radius: 50%;
  border: 1px solid rgba(24, 216, 255, 0.45);
  box-shadow: inset 0 0 24px rgba(24, 216, 255, 0.22);
}

.core-orb span {
  color: white;
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.8);
}

.business-center p {
  position: absolute;
  left: 50%;
  bottom: -34px;
  transform: translateX(-50%);
  width: 220px;
  margin: 0;
  color: rgba(221, 246, 255, 0.76);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.22em;
  line-height: 1.6;
  text-align: center;
}

.core-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(24, 216, 255, 0.46);
  box-shadow: 0 0 24px rgba(24, 216, 255, 0.2);
}

.ring-one {
  inset: 20px;
  animation: rotateRing 18s linear infinite;
}

.ring-two {
  inset: 0;
  transform: rotateX(68deg) rotateZ(28deg);
  border-color: rgba(139, 92, 255, 0.48);
  animation: rotateRingReverse 22s linear infinite;
}

.ring-three {
  inset: 44px;
  transform: rotateX(68deg) rotateZ(-32deg);
  border-color: rgba(255, 77, 219, 0.3);
  animation: rotateRing 14s linear infinite;
}

.business-card {
  position: relative;
  min-height: 285px;
  padding: 30px 30px 28px;
  border: 1px solid rgba(75, 196, 255, 0.14);
  border-radius: 28px;
  background:
    linear-gradient(145deg, rgba(13, 42, 96, 0.58), rgba(4, 12, 30, 0.76)),
    radial-gradient(circle at 30% 0%, rgba(24, 216, 255, 0.1), transparent 14rem);
  box-shadow:
    0 22px 68px rgba(0, 0, 0, 0.2),
    inset 0 0 34px rgba(24, 216, 255, 0.03);
  overflow: hidden;
  transition: 0.28s ease;
}

.business-card:nth-child(2),
.business-card:nth-child(4) {
  margin-right: 145px;
}

.business-card:nth-child(3),
.business-card:nth-child(5) {
  margin-left: 145px;
}

.business-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, transparent 0 35%, rgba(255, 255, 255, 0.08) 44%, transparent 54%),
    radial-gradient(circle at 78% 20%, rgba(24, 216, 255, 0.18), transparent 12rem);
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  transition: 0.28s ease;
}

.business-card::after {
  content: none;
}

.business-card:hover {
  transform: translateY(-8px);
  border-color: rgba(24, 216, 255, 0.42);
  box-shadow:
    0 28px 78px rgba(0, 0, 0, 0.28),
    0 0 42px rgba(24, 216, 255, 0.1);
}

.business-card:hover::before {
  opacity: 1;
}

.card-number {
  position: absolute;
  z-index: 1;
  right: 26px;
  top: 20px;
  color: transparent;
  -webkit-text-stroke: 1px rgba(24, 216, 255, 0.38);
  font-size: 58px;
  font-weight: 900;
  line-height: 1;
}

.business-card .card-icon {
  position: relative;
  z-index: 1;
  margin-bottom: 22px;
}

.business-card h3 {
  position: relative;
  z-index: 1;
  margin: 0 0 14px;
  color: #f2fbff;
  font-size: 22px;
  text-shadow: 0 0 18px rgba(24, 216, 255, 0.2);
}

.business-card p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: #aebfda;
  font-size: 15px;
  line-height: 1.85;
}

.business-card ul {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}

.business-card li {
  padding: 6px 10px;
  border: 1px solid rgba(24, 216, 255, 0.22);
  border-radius: 999px;
  color: #cceeff;
  font-size: 12px;
  background: rgba(24, 216, 255, 0.08);
}

.feature-ai {
  background:
    linear-gradient(145deg, rgba(13, 42, 96, 0.58), rgba(4, 12, 30, 0.8)),
    radial-gradient(circle at 18% 18%, rgba(24, 216, 255, 0.14), transparent 12rem);
}

.feature-security {
  background:
    linear-gradient(145deg, rgba(17, 38, 88, 0.58), rgba(4, 12, 30, 0.8)),
    radial-gradient(circle at 18% 18%, rgba(139, 92, 255, 0.15), transparent 12rem);
}

.feature-platform {
  background:
    linear-gradient(145deg, rgba(13, 48, 100, 0.58), rgba(4, 12, 30, 0.8)),
    radial-gradient(circle at 18% 18%, rgba(24, 216, 255, 0.13), transparent 12rem);
}

.feature-data {
  background:
    linear-gradient(145deg, rgba(28, 32, 90, 0.58), rgba(4, 12, 30, 0.8)),
    radial-gradient(circle at 18% 18%, rgba(255, 77, 219, 0.11), transparent 12rem);
}

@keyframes rotateRing {
  from {
    transform: rotateX(68deg) rotateZ(0deg);
  }

  to {
    transform: rotateX(68deg) rotateZ(360deg);
  }
}

@keyframes rotateRingReverse {
  from {
    transform: rotateX(68deg) rotateZ(360deg);
  }

  to {
    transform: rotateX(68deg) rotateZ(0deg);
  }
}

@media (max-width: 1080px) {
  .business-showcase {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .business-center {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    margin: 0 auto 24px;
    grid-row: 1;
  }

  .business-card:nth-child(2),
  .business-card:nth-child(3),
  .business-card:nth-child(4),
  .business-card:nth-child(5) {
    margin-left: 0;
    margin-right: 0;
  }
}

@media (max-width: 620px) {
  .about-section {
    padding-top: 76px;
  }

  .about-copy,
  .about-foundation {
    padding: 24px;
    border-radius: 22px;
  }

  .about-copy .section-title h2 {
    font-size: 30px;
  }

  .about-copy .about-lead {
    font-size: 16px;
  }

  .about-actions .btn {
    width: 100%;
  }

  .business-section {
    padding-top: 76px;
  }

  .business-card {
    padding: 24px;
    border-radius: 22px;
  }

  .business-card h3 {
    font-size: 20px;
  }

  .card-number {
    font-size: 44px;
  }

  .business-center {
    width: 220px;
    height: 220px;
  }

  .feed-section {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .feed-copy {
    padding: 24px;
    border-radius: 22px;
  }

  .feed-copy h3 {
    font-size: 30px;
  }

  .feed-actions .btn {
    width: 100%;
  }
}

/* ===============================
   核心技术中心：Logo星球动态特效
================================ */

.logo-center {
  position: absolute;
  left: 50%;
  top: 52%;
  z-index: 5;
  width: 300px;
  height: 300px;
  transform: translate(-50%, -50%);
  display: grid;
  place-items: center;
  pointer-events: none;
}

.logo-planet-wrap {
  position: relative;
  z-index: 4;
  width: 170px;
  height: 170px;
  display: grid;
  place-items: center;
  animation: logoFloat 5s ease-in-out infinite;
}

.logo-planet {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter:
    drop-shadow(0 0 12px rgba(24, 216, 255, 0.55))
    drop-shadow(0 0 24px rgba(24, 216, 255, 0.35))
    drop-shadow(0 0 36px rgba(139, 92, 255, 0.28));
  animation:
    logoSpin 18s linear infinite,
    logoBreath 3s ease-in-out infinite;
  transform-origin: center center;
}

.planet-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.glow-1 {
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(24, 216, 255, 0.28), transparent 68%);
  filter: blur(8px);
  animation: glowPulse 3.5s ease-in-out infinite;
}

.glow-2 {
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(139, 92, 255, 0.18), transparent 72%);
  filter: blur(14px);
  animation: glowPulse2 4.5s ease-in-out infinite;
}

.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(24, 216, 255, 0.3);
  pointer-events: none;
  box-shadow: 0 0 20px rgba(24, 216, 255, 0.08);
}

.orbit-1 {
  width: 220px;
  height: 220px;
  transform: rotateX(70deg) rotateZ(0deg);
  animation: orbitSpin1 10s linear infinite;
}

.orbit-2 {
  width: 250px;
  height: 110px;
  border-color: rgba(139, 92, 255, 0.34);
  transform: rotateZ(18deg);
  animation: orbitSpin2 8s linear infinite reverse;
}

.orbit-3 {
  width: 280px;
  height: 140px;
  border-color: rgba(255, 77, 219, 0.18);
  transform: rotateZ(-24deg);
  animation: orbitSpin3 14s linear infinite;
}

.orbit::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -4px;
  width: 10px;
  height: 10px;
  margin-top: -5px;
  border-radius: 50%;
  background: #18d8ff;
  box-shadow: 0 0 12px rgba(24, 216, 255, 0.8);
}

.orbit-2::before {
  background: #8b5cff;
  box-shadow: 0 0 12px rgba(139, 92, 255, 0.85);
}

.orbit-3::before {
  background: #4fdfff;
  box-shadow: 0 0 10px rgba(79, 223, 255, 0.8);
}

.energy-dots {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.energy-dots span {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #dffbff;
  box-shadow: 0 0 12px rgba(24, 216, 255, 0.8);
  animation: dotTwinkle 2.8s ease-in-out infinite;
}

.energy-dots span:nth-child(1) {
  top: 40px;
  left: 65px;
  animation-delay: 0s;
}

.energy-dots span:nth-child(2) {
  top: 72px;
  right: 54px;
  animation-delay: 0.6s;
}

.energy-dots span:nth-child(3) {
  bottom: 62px;
  left: 48px;
  animation-delay: 1.2s;
}

.energy-dots span:nth-child(4) {
  bottom: 46px;
  right: 72px;
  animation-delay: 1.8s;
}

.logo-center p {
  position: absolute;
  left: 50%;
  bottom: -42px;
  transform: translateX(-50%);
  width: 220px;
  margin: 0;
  text-align: center;
  color: rgba(225, 245, 255, 0.8);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.22em;
  line-height: 1.7;
  text-shadow: 0 0 16px rgba(24, 216, 255, 0.28);
}

/* 动画 */

@keyframes logoSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes logoBreath {
  0%, 100% {
    transform: scale(1);
    filter:
      drop-shadow(0 0 12px rgba(24, 216, 255, 0.55))
      drop-shadow(0 0 24px rgba(24, 216, 255, 0.35))
      drop-shadow(0 0 36px rgba(139, 92, 255, 0.28));
  }
  50% {
    transform: scale(1.04);
    filter:
      drop-shadow(0 0 18px rgba(24, 216, 255, 0.72))
      drop-shadow(0 0 32px rgba(24, 216, 255, 0.44))
      drop-shadow(0 0 52px rgba(139, 92, 255, 0.36));
  }
}

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

@keyframes glowPulse {
  0%, 100% {
    transform: scale(0.96);
    opacity: 0.65;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

@keyframes glowPulse2 {
  0%, 100% {
    transform: scale(1);
    opacity: 0.45;
  }
  50% {
    transform: scale(1.12);
    opacity: 0.82;
  }
}

@keyframes orbitSpin1 {
  from {
    transform: rotateX(70deg) rotateZ(0deg);
  }
  to {
    transform: rotateX(70deg) rotateZ(360deg);
  }
}

@keyframes orbitSpin2 {
  from {
    transform: rotateZ(18deg) rotate(0deg);
  }
  to {
    transform: rotateZ(18deg) rotate(360deg);
  }
}

@keyframes orbitSpin3 {
  from {
    transform: rotateZ(-24deg) rotate(0deg);
  }
  to {
    transform: rotateZ(-24deg) rotate(360deg);
  }
}

@keyframes dotTwinkle {
  0%, 100% {
    opacity: 0.35;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1.4);
  }
}

/* 手机适配 */
@media (max-width: 1080px) {
  .logo-center {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    margin: 0 auto 24px;
  }
}

@media (max-width: 620px) {
  .logo-center {
    width: 240px;
    height: 240px;
  }

  .logo-planet-wrap {
    width: 140px;
    height: 140px;
  }

  .orbit-1 {
    width: 180px;
    height: 180px;
  }

  .orbit-2 {
    width: 210px;
    height: 92px;
  }

  .orbit-3 {
    width: 230px;
    height: 110px;
  }
}