:root {
  --ink: #171717;
  --soft-ink: #565656;
  --paper: #ffffff;
  --panel: #f7f7f7;
  --blue-wash: #dbe5f3;
  --night: #050505;
  --night-2: #171717;
  --accent: #ffd49b;
  --accent-deep: #b57a32;
  --line: rgba(255, 255, 255, 0.16);
  --shadow: 0 22px 60px rgba(20, 35, 60, 0.16);
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    "Microsoft YaHei UI",
    "PingFang SC",
    "Hiragino Sans GB",
    "Noto Sans CJK SC",
    sans-serif;
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

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

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

section {
  scroll-margin-top: 78px;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 48px, var(--max));
  height: 72px;
  margin: 0 auto;
  color: #fff;
  transition:
    background 220ms ease,
    box-shadow 220ms ease,
    width 220ms ease,
    padding 220ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  width: 100%;
  padding: 0 max(24px, calc((100% - var(--max)) / 2));
  background: rgba(5, 5, 5, 0.88);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  color: #fff;
  font-size: 9px;
  font-weight: 800;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0)),
    rgba(255, 255, 255, 0.04);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 42px;
  font-size: 14px;
  font-weight: 600;
}

.site-nav a {
  position: relative;
  padding: 27px 0 24px;
  color: rgba(255, 255, 255, 0.82);
  transition: color 160ms ease;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 18px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #fff;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: 900px;
  overflow: hidden;
  color: #fff;
  background:
    linear-gradient(90deg, #050505 0%, #090909 45%, rgba(8, 8, 8, 0.82) 100%),
    var(--night);
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(115deg, transparent 0 30%, rgba(255, 211, 151, 0.12) 30.2%, transparent 30.6%),
    linear-gradient(118deg, transparent 0 36%, rgba(142, 198, 255, 0.18) 36.2%, transparent 36.7%),
    repeating-linear-gradient(0deg, transparent 0 84px, rgba(255, 255, 255, 0.04) 85px 86px),
    repeating-linear-gradient(90deg, transparent 0 96px, rgba(255, 255, 255, 0.035) 97px 98px);
  opacity: 0.75;
}

.hero::after {
  position: absolute;
  inset: auto 0 0;
  height: 210px;
  content: "";
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.8));
}

.hero-noise {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background-image: radial-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px);
  background-size: 18px 18px;
}

.hero-shell {
  position: relative;
  z-index: 2;
  width: min(100% - 48px, var(--max));
  min-height: 900px;
  margin: 0 auto;
}

.hero-copy {
  position: relative;
  z-index: 3;
  max-width: 540px;
  padding-top: 278px;
}

.hero-copy h1 {
  position: relative;
  margin: 0 0 34px;
  padding-bottom: 26px;
  font-size: 46px;
  line-height: 1.16;
  font-weight: 800;
}

.hero-copy h1::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 98px;
  height: 4px;
  content: "";
  background: #fff;
}

.hero-subtitle {
  max-width: 470px;
  margin: 0 0 56px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 22px;
  line-height: 1.8;
  font-weight: 500;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  color: #8d6a3e;
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(180deg, #ffe2b7, #ffc982);
  box-shadow: 0 12px 24px rgba(255, 194, 120, 0.28);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.primary-button:hover,
.primary-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(255, 194, 120, 0.38);
}

.hero-visual {
  position: absolute;
  top: 108px;
  right: -128px;
  z-index: 1;
  width: 850px;
  margin: 0;
}

.hero-visual::before {
  position: absolute;
  inset: 0;
  z-index: 2;
  content: "";
  pointer-events: none;
  background:
    linear-gradient(90deg, #050505 0%, rgba(5, 5, 5, 0) 18%, rgba(5, 5, 5, 0) 78%, #050505 100%),
    linear-gradient(180deg, #050505 0%, rgba(5, 5, 5, 0) 12%, rgba(5, 5, 5, 0) 78%, #050505 100%);
}

.hero-visual img {
  width: 100%;
  opacity: 0.95;
}

.section-pad {
  padding: 118px 0;
}

.section-heading {
  position: relative;
  width: min(100% - 48px, var(--max));
  margin: 0 auto 72px;
  text-align: center;
}

.section-heading span {
  position: absolute;
  top: -56px;
  right: 0;
  left: 0;
  z-index: 0;
  color: rgba(0, 0, 0, 0.055);
  font-size: 84px;
  line-height: 1;
  font-weight: 900;
  pointer-events: none;
}

.section-heading h2 {
  position: relative;
  z-index: 1;
  margin: 0 0 10px;
  font-size: 42px;
  line-height: 1.2;
  font-weight: 900;
}

.section-heading p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: #2d2d2d;
  font-size: 22px;
  line-height: 1.45;
  font-weight: 500;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 34px;
  width: min(100% - 96px, var(--max));
  margin: 0 auto;
}

.metric-card {
  min-width: 0;
  text-align: center;
}

.metric-circle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 214px;
  height: 214px;
  margin: 0 auto 36px;
  border-radius: 50%;
  color: #fff;
  box-shadow: inset 0 -12px 26px rgba(0, 0, 0, 0.08);
}

.metric-circle strong {
  display: flex;
  align-items: baseline;
  justify-content: center;
  font-size: 58px;
  line-height: 1;
  font-weight: 900;
}

.metric-circle strong span {
  margin-left: 4px;
  font-size: 25px;
  font-style: normal;
  font-weight: 800;
}

.metric-circle em {
  margin-top: 16px;
  font-size: 30px;
  line-height: 1.1;
  font-style: normal;
  font-weight: 900;
}

.metric-card p {
  max-width: 236px;
  margin: 0 auto;
  color: #3d3d3d;
  font-size: 17px;
  line-height: 1.75;
  font-weight: 600;
}

.metric-orange {
  background: linear-gradient(145deg, #ff7600, #f35a00);
}

.metric-cyan {
  background: linear-gradient(145deg, #2dc0ef, #0aa1d3);
}

.metric-violet {
  background: linear-gradient(145deg, #8555ef, #7448df);
}

.metric-gold {
  background: linear-gradient(145deg, #ffb22a, #f3a214);
}

.platform {
  background:
    linear-gradient(180deg, #d8e2f0 0%, var(--blue-wash) 100%);
}

.platform-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(100% - 48px, 1280px);
  margin: 0 auto;
}

.platform-inner img {
  width: min(100%, 1080px);
  margin: -8px auto 72px;
}

.primary-button-light {
  min-width: 220px;
  min-height: 66px;
  font-size: 26px;
  font-weight: 500;
}

.about {
  background: #fff;
}

.about .section-heading {
  margin-bottom: 62px;
}

.about-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(330px, 0.95fr);
  align-items: center;
  width: min(100% - 96px, 1180px);
  min-height: 530px;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow);
}

.about-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-copy {
  padding: 54px 58px;
  color: #626262;
  font-size: 17px;
  line-height: 2;
  font-weight: 600;
  text-align: center;
}

.about-copy p {
  margin: 0;
}

.about-copy p + p {
  margin-top: 12px;
}

.contact {
  color: #fff;
  background: var(--night-2);
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 460px) minmax(0, 1fr);
  gap: 52px;
  align-items: center;
  width: min(100% - 48px, 980px);
  margin: 0 auto;
  padding: 130px 0 78px;
}

.map-frame {
  margin: 0;
  border: 5px solid rgba(255, 255, 255, 0.92);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.38);
}

.map-frame img {
  width: 100%;
  aspect-ratio: 556 / 272;
  object-fit: cover;
}

.contact-copy {
  min-width: 0;
}

.contact-label {
  margin: 0 0 22px;
  font-size: 28px;
  line-height: 1;
  font-weight: 900;
}

.contact-label::before {
  display: inline-block;
  width: 28px;
  height: 20px;
  margin-right: 12px;
  content: "";
  vertical-align: -2px;
  background:
    radial-gradient(circle at 50% 62%, #fff 0 5px, transparent 5.5px),
    linear-gradient(#fff, #fff) 50% 0 / 22px 7px no-repeat,
    linear-gradient(#fff, #fff) 50% 100% / 28px 9px no-repeat;
}

.contact-copy h2 {
  margin: 0 0 4px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 22px;
  line-height: 1.45;
  font-weight: 600;
}

.phone {
  display: inline-block;
  margin-bottom: 4px;
  font-size: 44px;
  line-height: 1.12;
  font-weight: 900;
}

.contact-copy p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 20px;
  line-height: 1.55;
  font-weight: 600;
}

.contact-copy a:hover,
.contact-copy a:focus-visible {
  color: var(--accent);
}

.site-footer {
  display: flex;
  justify-content: center;
  gap: 44px;
  padding: 28px 24px;
  color: rgba(255, 255, 255, 0.68);
  background: #000;
  font-size: 15px;
  line-height: 1.5;
}

.site-footer p {
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1180px) {
  .site-nav {
    gap: 28px;
  }

  .hero-visual {
    right: -230px;
    width: 780px;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 64px;
    width: min(100% - 64px, 760px);
  }
}

@media (max-width: 820px) {
  .site-header,
  .site-header.is-scrolled,
  .site-header.is-open {
    width: 100%;
    height: 64px;
    padding: 0 20px;
    background: rgba(5, 5, 5, 0.9);
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    width: 42px;
    height: 42px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
  }

  .nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 2px auto;
    background: currentColor;
    transition:
      transform 180ms ease,
      opacity 180ms ease;
  }

  .site-header.is-open .nav-toggle span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .site-header.is-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .site-header.is-open .nav-toggle span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: 64px;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 10px 20px 18px;
    background: rgba(5, 5, 5, 0.94);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(-120%);
    transition: transform 200ms ease;
  }

  .site-header.is-open .site-nav {
    transform: translateY(0);
  }

  .site-nav a {
    padding: 16px 0;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

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

  .hero,
  .hero-shell {
    min-height: 760px;
  }

  .hero-shell {
    width: min(100% - 40px, 640px);
  }

  .hero-copy {
    max-width: 520px;
    padding-top: 132px;
  }

  .hero-copy h1 {
    margin-bottom: 24px;
    padding-bottom: 22px;
    font-size: 36px;
  }

  .hero-subtitle {
    margin-bottom: 34px;
    font-size: 18px;
  }

  .hero-visual {
    top: auto;
    right: 50%;
    bottom: 0;
    width: 620px;
    transform: translateX(50%);
    opacity: 0.84;
  }

  .section-pad {
    padding: 78px 0;
  }

  .section-heading {
    margin-bottom: 48px;
  }

  .section-heading span {
    top: -36px;
    font-size: 58px;
  }

  .section-heading h2 {
    font-size: 32px;
  }

  .section-heading p {
    font-size: 18px;
  }

  .metric-grid {
    width: min(100% - 40px, 640px);
    gap: 46px 24px;
  }

  .metric-circle {
    width: 174px;
    height: 174px;
    margin-bottom: 24px;
  }

  .metric-circle strong {
    font-size: 48px;
  }

  .metric-circle em {
    font-size: 24px;
  }

  .metric-card p {
    font-size: 15px;
  }

  .platform-inner img {
    margin-bottom: 44px;
  }

  .primary-button-light {
    min-width: 184px;
    min-height: 56px;
    font-size: 22px;
  }

  .about-panel {
    grid-template-columns: 1fr;
    width: min(100% - 40px, 640px);
  }

  .about-panel img {
    min-height: 260px;
  }

  .about-copy {
    padding: 34px 26px 42px;
    font-size: 15px;
    text-align: left;
  }

  .contact-inner {
    grid-template-columns: 1fr;
    width: min(100% - 40px, 640px);
    padding: 78px 0 56px;
  }

  .contact-label {
    font-size: 24px;
  }

  .contact-copy h2 {
    font-size: 18px;
  }

  .phone {
    font-size: 36px;
  }

  .contact-copy p {
    font-size: 17px;
  }

  .site-footer {
    display: block;
    text-align: center;
  }

  .site-footer p + p {
    margin-top: 8px;
  }
}

@media (max-width: 520px) {
  .hero,
  .hero-shell {
    min-height: 710px;
  }

  .hero-copy h1 {
    font-size: 31px;
  }

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

  .hero-visual {
    width: 520px;
  }

  .primary-button {
    min-width: 136px;
    min-height: 44px;
    font-size: 16px;
  }

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

  .metric-card {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 18px;
    align-items: center;
    text-align: left;
  }

  .metric-circle {
    width: 150px;
    height: 150px;
    margin: 0;
  }

  .metric-circle strong {
    font-size: 40px;
  }

  .metric-circle em {
    font-size: 21px;
  }

  .metric-card p {
    margin: 0;
  }

  .section-heading h2 {
    font-size: 28px;
  }

  .section-heading p {
    font-size: 16px;
  }

  .contact-inner {
    gap: 34px;
  }

  .phone {
    font-size: 32px;
  }
}