:root {
  --orange: #ff6a1a;
  --orange-deep: #e55313;
  --accent: #24a789;
  --ink: #111318;
  --muted: #6a717c;
  --line: rgba(17, 19, 24, 0.08);
  --paper: #ffffff;
  --soft: #f6f7f8;
  --shadow: 0 24px 70px rgba(17, 19, 24, 0.12);
  --card-radius: 8px;
  --layout-width: 1180px;
  --header-height: 72px;
  --feature-slide-width: min(1040px, 68vw);
  --feature-visual-height: calc(var(--feature-slide-width) * 9 / 16);
  --feature-section-height: calc(
    clamp(48px, 5vw, 76px) +
    clamp(52px, 5.5vw, 84px) +
    clamp(14px, 1.6vw, 24px) +
    var(--feature-visual-height) +
    clamp(18px, 2vw, 26px) +
    8px +
    clamp(34px, 4vw, 54px)
  );
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter,
    "PingFang SC",
    "Microsoft YaHei",
    Arial,
    sans-serif;
  letter-spacing: 0;
}

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

img,
video {
  display: block;
  max-width: 100%;
}

.screen-inner {
  width: min(var(--layout-width), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-height);
  color: #ffffff;
  background: rgba(17, 19, 24, 0.34);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  transition:
    background 220ms ease,
    border-color 220ms ease,
    color 220ms ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  border-bottom-color: rgba(17, 19, 24, 0.08);
}

.site-header-shell {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  font-weight: 800;
  font-size: 20px;
  line-height: 1;
}

.brand img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  transform: translateY(1px) scale(1.08);
  transform-origin: center;
}

.footer-brand img {
  width: 28px;
  height: 28px;
  transform: none;
}

.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(22px, 4vw, 56px);
  font-size: 14px;
  font-weight: 650;
}

.desktop-nav a,
.mobile-nav a {
  opacity: 0.92;
  transition: color 180ms ease, opacity 180ms ease;
}

.desktop-nav a:hover,
.mobile-nav a:hover,
.desktop-nav a.is-active,
.mobile-nav a.is-active {
  color: var(--orange);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  color: inherit;
  background: rgba(255, 255, 255, 0.16);
  cursor: pointer;
}

.site-header.is-scrolled .menu-button {
  background: rgba(17, 19, 24, 0.06);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.mobile-nav {
  display: none;
}

.hero {
  --hero-media-width: calc((100vh - var(--header-height)) * 1.236);
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  color: #ffffff;
  background:
    radial-gradient(circle at 72% 82%, rgba(255, 106, 26, 0.025), transparent 12%),
    linear-gradient(180deg, #020203 0%, #000000 100%);
}

.hero-media {
  position: absolute;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  left: auto;
  height: calc(100vh - var(--header-height));
  width: var(--hero-media-width);
  max-width: none;
  display: flex;
  align-items: stretch;
  justify-content: flex-end;
  z-index: 2;
  overflow: hidden;
  pointer-events: none;
}

.hero-media img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: contain;
  object-position: right center;
  filter: drop-shadow(0 30px 70px rgba(0, 0, 0, 0.34));
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(1, 1, 2, 0.01) 0%, rgba(1, 1, 2, 0.025) 62%, rgba(1, 1, 2, 0.08) 100%);
}

.hero-seam {
  display: none;
}

.hero-inner {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  width: 100%;
  max-width: none;
  margin: 0;
  min-height: 100vh;
  padding-top: var(--header-height);
  padding-left: clamp(72px, 8vw, 140px);
  padding-right: 0;
}

.hero-copy {
  width: min(36vw, 640px);
  max-width: 640px;
  margin-right: auto;
  padding-left: 0;
  transform: translateY(-32px);
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 0 22px;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.2;
}

.hero-kicker-primary {
  color: var(--orange);
}

.hero-kicker-secondary {
  color: rgba(255, 255, 255, 0.76);
}

.hero-title-lines {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin: 0;
  width: fit-content;
  font-size: clamp(56px, 5.2vw, 88px);
  line-height: 1.08;
  letter-spacing: 0;
  font-weight: 780;
}

.hero-title-lines span {
  display: block;
  white-space: nowrap;
}

.hero-more-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  height: 44px;
  margin-top: 44px;
  padding: 0 26px;
  color: #ffffff;
  background: var(--orange);
  border: 1px solid rgba(255, 106, 26, 0.92);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 750;
  line-height: 1;
  box-shadow: 0 16px 34px rgba(255, 106, 26, 0.2);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms ease,
    box-shadow 180ms ease;
}

.hero-more-link:hover,
.hero-more-link:focus-visible {
  background: var(--orange-deep);
  border-color: rgba(255, 106, 26, 1);
  box-shadow: 0 18px 38px rgba(255, 106, 26, 0.28);
  outline: none;
  transform: translateY(-2px);
}

.section-shell {
  padding: clamp(78px, 10vw, 126px) 0;
}

.features-section {
  overflow: hidden;
  padding: clamp(48px, 5vw, 76px) 0 clamp(34px, 4vw, 54px);
  color: #111318;
  background: #ffffff;
}

.features-carousel {
  --feature-slide-gap: clamp(16px, 1.7vw, 28px);
  position: relative;
  width: 100%;
}

.features-carousel-heading {
  display: grid;
  place-items: center;
  min-height: clamp(52px, 5.5vw, 84px);
  padding: 0 20px clamp(14px, 1.6vw, 24px);
  text-align: center;
}

.feature-carousel-title {
  margin: 0;
  color: var(--orange);
  font-size: clamp(26px, 2.8vw, 44px);
  font-weight: 680;
  line-height: 1.16;
}

.feature-carousel-stage {
  position: relative;
  width: 100%;
}

.feature-carousel-viewport {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.feature-carousel-track {
  display: flex;
  align-items: stretch;
  gap: var(--feature-slide-gap);
  width: max-content;
  will-change: transform;
  transition: transform 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.feature-slide {
  flex: 0 0 var(--feature-slide-width);
  width: var(--feature-slide-width);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #f3f4f6;
  opacity: 0.58;
  transform: translateZ(0);
  transition:
    opacity 420ms ease,
    filter 420ms ease;
}

.feature-slide.is-active {
  opacity: 1;
}

.feature-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.feature-carousel-arrow {
  position: absolute;
  top: 50%;
  z-index: 4;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  color: #111318;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(17, 19, 24, 0.1);
  border-radius: 999px;
  box-shadow: 0 16px 34px rgba(17, 19, 24, 0.16);
  cursor: pointer;
  transform: translateY(-50%);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.feature-carousel-arrow:hover,
.feature-carousel-arrow:focus-visible {
  background: #ffffff;
  border-color: rgba(255, 106, 26, 0.34);
  outline: none;
  transform: translateY(-50%) scale(1.04);
}

.feature-carousel-arrow span {
  content: "";
  width: 12px;
  height: 12px;
  border-top: 2px solid currentColor;
  border-left: 2px solid currentColor;
}

.feature-carousel-arrow-prev {
  left: max(22px, calc((100% - var(--feature-slide-width)) / 2 + 22px));
}

.feature-carousel-arrow-prev span {
  transform: translateX(2px) rotate(-45deg);
}

.feature-carousel-arrow-next {
  right: max(22px, calc((100% - var(--feature-slide-width)) / 2 + 22px));
}

.feature-carousel-arrow-next span {
  transform: translateX(-2px) rotate(135deg);
}

.feature-carousel-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: clamp(18px, 2vw, 26px);
}

.feature-carousel-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  background: rgba(17, 19, 24, 0.22);
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition:
    width 180ms ease,
    background 180ms ease;
}

.feature-carousel-dot:hover,
.feature-carousel-dot:focus-visible {
  background: rgba(255, 106, 26, 0.62);
  outline: none;
}

.feature-carousel-dot.is-active {
  width: 28px;
  background: var(--orange);
}

.scenes-section {
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0;
  min-height: var(--feature-section-height);
  background: #ffffff;
}

.scenes-carousel {
  width: 100%;
}

.scenes-carousel .feature-carousel-stage {
  padding: 0;
}

.mobile-section {
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0;
  min-height: var(--feature-section-height);
  background: #ffffff;
}

.mobile-screen-grid {
  display: grid;
  grid-template-columns: minmax(340px, 0.86fr) minmax(0, 1.14fr);
  align-items: center;
  width: 100%;
  min-height: var(--feature-section-height);
}

.mobile-copy {
  width: min(720px, calc(100% - 72px));
  margin-left: clamp(76px, 8vw, 150px);
}

.mobile-kicker {
  margin: 0 0 22px;
  color: var(--orange);
  font-size: clamp(20px, 1.45vw, 26px);
  line-height: 1.2;
  font-weight: 800;
}

.mobile-title-lines {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0;
  color: #111318;
  font-size: clamp(46px, 4.8vw, 78px);
  line-height: 1.08;
  font-weight: 780;
}

.mobile-title-lines span {
  display: block;
  white-space: nowrap;
}

.mobile-device-visual {
  position: relative;
  display: flex;
  justify-content: flex-end;
  align-self: stretch;
  min-height: var(--feature-section-height);
  overflow: hidden;
}

.mobile-device-visual img {
  width: auto;
  height: var(--feature-section-height);
  max-width: none;
  object-fit: cover;
  object-position: right center;
}

.section-tag {
  margin: 0 0 12px;
  color: var(--orange);
  font-size: 14px;
  font-weight: 800;
}

.section-heading,
.section-copy {
  min-width: 0;
}

.section-heading.centered {
  text-align: center;
}

.section-heading h2,
.section-copy h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1.14;
}

.section-heading p:last-child,
.section-copy p:last-child {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.section-heading.centered p:last-child {
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.placeholder-stage:hover {
  border-color: rgba(255, 106, 26, 0.24);
  box-shadow: 0 22px 50px rgba(17, 19, 24, 0.1);
  transform: translateY(-4px);
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(40px, 8vw, 96px);
  align-items: center;
}

.placeholder-stage {
  display: grid;
  place-items: center;
  min-height: 560px;
  padding: 28px;
  color: rgba(17, 19, 24, 0.52);
  text-align: center;
  background:
    linear-gradient(135deg, rgba(255, 106, 26, 0.08), rgba(36, 167, 137, 0.08)),
    repeating-linear-gradient(45deg, rgba(17, 19, 24, 0.04) 0 10px, transparent 10px 20px),
    #f7f8f9;
  border: 1px dashed rgba(17, 19, 24, 0.22);
  border-radius: var(--card-radius);
  font-size: 18px;
  font-weight: 800;
  transition:
    transform 220ms ease,
    box-shadow 220ms ease,
    border-color 220ms ease;
}

.site-footer {
  color: #ffffff;
  background: #101114;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(2, minmax(140px, 0.7fr));
  gap: 42px;
  padding: 58px 0 44px;
}

.footer-column {
  display: grid;
  align-content: start;
  gap: 12px;
}

.footer-grid .footer-column:nth-child(2),
.footer-grid .footer-column:nth-child(3) {
  align-content: center;
  justify-items: center;
  text-align: center;
}

.footer-column-brand {
  gap: 16px;
}

.footer-brand {
  width: fit-content;
}

.footer-column p {
  max-width: 380px;
  margin: 0;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.8;
}

.footer-column h2 {
  margin: 0;
  font-size: 16px;
}

.footer-column a:not(.brand) {
  color: rgba(255, 255, 255, 0.68);
}

.footer-column a:not(.brand):hover {
  color: #ffffff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  padding: 18px 20px;
  color: rgba(255, 255, 255, 0.56);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
}

.footer-beian {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.74);
}

.footer-beian:hover {
  color: #ffffff;
}

.footer-beian-ga img {
  display: block;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  object-fit: contain;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
  will-change: opacity, transform;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 1024px) {
  :root {
    --feature-slide-width: min(880px, 76vw);
  }

  .desktop-nav {
    display: none;
  }

  .menu-button {
    display: block;
    grid-column: 3;
    justify-self: end;
  }

  .mobile-nav {
    position: absolute;
    top: var(--header-height);
    left: 20px;
    right: 20px;
    padding: 18px;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(17, 19, 24, 0.08);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-header.is-menu-open .mobile-nav {
    display: grid;
    gap: 16px;
  }

  .hero-media {
    width: var(--hero-media-width);
  }

  .hero-copy {
    width: min(36vw, 520px);
  }

  .split-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .mobile-screen-grid {
    grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  }

  .mobile-copy {
    width: min(400px, calc(100% - 48px));
    margin-left: 52px;
  }

  .mobile-device-visual img {
    height: var(--feature-section-height);
  }

  .placeholder-stage {
    min-height: 460px;
  }
}

@media (max-width: 760px) {
  :root {
    --header-height: 64px;
    --feature-slide-width: calc(100vw - 32px);
  }

  .screen-inner {
    width: min(calc(100% - 28px), var(--layout-width));
  }

  .brand {
    font-size: 18px;
    gap: 10px;
  }

  .brand img {
    width: 34px;
    height: 34px;
    transform: translateY(1px) scale(1.1);
  }

  .footer-brand img {
    width: 32px;
    height: 32px;
    transform: none;
  }

  .mobile-nav {
    left: 12px;
    right: 12px;
  }

  .hero {
    display: flex;
    flex-direction: column;
    min-height: auto;
    padding-top: var(--header-height);
    background: #000000;
  }

  .hero-inner {
    position: relative;
    z-index: 4;
    width: 100%;
    min-height: auto;
    padding: 26px 16px 56px;
    align-items: flex-start;
  }

  .hero-copy {
    width: 100%;
    max-width: min(92vw, 420px);
    padding-left: 0;
    transform: none;
  }

  .hero-kicker {
    flex-wrap: wrap;
    font-size: 16px;
    margin-bottom: 14px;
  }

  .hero-title-lines {
    gap: 10px;
    font-size: clamp(34px, 10.6vw, 48px);
    line-height: 1.08;
  }

  .hero-more-link {
    min-width: 108px;
    height: 38px;
    margin-top: 24px;
    padding: 0 22px;
    font-size: 13px;
  }

  .hero-media {
    position: relative;
    width: 100%;
    height: min(78vw, 390px);
    min-height: 280px;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    order: 0;
    overflow: hidden;
  }

  .hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 54% 22%;
  }

  .hero-overlay {
    pointer-events: none;
    background:
      linear-gradient(180deg, rgba(0, 0, 0, 0.04) 0%, rgba(0, 0, 0, 0.08) 36%, rgba(0, 0, 0, 0.92) 100%);
  }

  .hero-seam {
    display: none;
  }

  .section-heading h2,
  .section-copy h2 {
    font-size: clamp(30px, 9vw, 42px);
  }

  .features-section {
    padding: 52px 0 42px;
  }

  .features-carousel {
    --feature-slide-gap: 16px;
  }

  .features-carousel-heading {
    min-height: auto;
    padding: 0 14px 22px;
  }

  .feature-carousel-title {
    font-size: clamp(24px, 7vw, 34px);
  }

  .feature-carousel-stage {
    padding-bottom: 0;
  }

  .feature-carousel-viewport {
    width: 100%;
    overflow: hidden;
    cursor: grab;
    touch-action: pan-y;
  }

  .feature-carousel-track {
    gap: var(--feature-slide-gap);
  }

  .feature-slide {
    flex-basis: var(--feature-slide-width);
    width: var(--feature-slide-width);
    aspect-ratio: 16 / 9;
    background: #f6f7f8;
    opacity: 0;
    visibility: hidden;
  }

  .features-carousel.is-dragging .feature-carousel-viewport {
    cursor: grabbing;
  }

  .features-carousel.is-dragging .feature-slide {
    opacity: 0.72;
    visibility: visible;
  }

  .feature-slide.is-active {
    opacity: 1;
    visibility: visible;
  }

  .feature-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .feature-carousel-arrow {
    display: none;
  }

  .mobile-section {
    display: block;
    padding: 56px 0 0;
    min-height: auto;
  }

  .mobile-screen-grid {
    display: grid;
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .mobile-copy {
    width: min(calc(100% - 32px), 460px);
    margin: 0 auto 28px;
    text-align: left;
  }

  .mobile-kicker {
    margin-bottom: 12px;
    font-size: 16px;
  }

  .mobile-title-lines {
    gap: 8px;
    font-size: clamp(32px, 9vw, 44px);
    line-height: 1.12;
  }

  .mobile-title-lines span {
    white-space: normal;
  }

  .mobile-device-visual {
    min-height: 0;
    overflow: visible;
  }

  .mobile-device-visual img {
    width: 100%;
    height: auto;
    object-fit: contain;
  }

  .scenes-section {
    display: block;
    min-height: auto;
    padding: 42px 0 46px;
  }

  .scenes-carousel .feature-carousel-stage {
    padding: 0;
  }

  .feature-carousel-dots {
    gap: 8px;
    margin-top: 18px;
  }

  .feature-carousel-dot {
    width: 7px;
    height: 7px;
  }

  .feature-carousel-dot.is-active {
    width: 24px;
  }

  .placeholder-stage {
    min-height: 360px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-align: center;
  }

  .footer-grid {
    grid-template-columns: max-content max-content;
    justify-content: center;
    gap: 26px;
    padding: 40px 0 34px;
  }

  .footer-column-brand {
    grid-column: 1 / -1;
  }

  .footer-column,
  .footer-column-brand,
  .footer-brand {
    justify-items: center;
    text-align: center;
  }

  .footer-column p {
    max-width: min(320px, calc(100vw - 36px));
    font-size: clamp(12px, 3.25vw, 14px);
    line-height: 1.6;
    white-space: nowrap;
  }

  .footer-beian {
    justify-content: center;
    max-width: calc(100vw - 36px);
    line-height: 1.5;
  }
}

@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;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}