:root {
  color-scheme: dark;
  --bg: #061421;
  --bg-deep: #04101b;
  --surface: rgba(10, 31, 48, 0.72);
  --surface-strong: rgba(13, 39, 59, 0.94);
  --line: rgba(182, 234, 231, 0.14);
  --text: #f4fbfb;
  --muted: #9db5c3;
  --green: #39e5bd;
  --green-strong: #18cfa4;
  --blue: #55a8ff;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.32);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg-deep);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -25%, rgba(66, 175, 216, 0.18), transparent 45%),
    linear-gradient(145deg, var(--bg-deep) 0%, var(--bg) 50%, #071a25 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  pointer-events: none;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 90%);
}

a,
button {
  -webkit-tap-highlight-color: transparent;
}

.page-glow {
  position: fixed;
  z-index: -1;
  width: 36rem;
  height: 36rem;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
}

.page-glow--one {
  top: -18rem;
  right: -8rem;
  background: rgba(51, 214, 180, 0.14);
}

.page-glow--two {
  bottom: -22rem;
  left: -12rem;
  background: rgba(64, 143, 238, 0.16);
}

.page-shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 92px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(108, 244, 211, 0.35);
  border-radius: 12px;
  color: #061b1b;
  font-size: 18px;
  font-weight: 900;
  background: linear-gradient(135deg, #89f7d9, var(--green));
  box-shadow: 0 10px 30px rgba(44, 224, 183, 0.2);
}

.brand-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.header-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.header-tag__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(57, 229, 189, 0.08);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.72fr);
  gap: clamp(48px, 8vw, 110px);
  align-items: center;
  min-height: 680px;
  padding: 82px 0;
}

.hero-copy {
  padding-bottom: 10px;
}

.eyebrow,
.section-kicker {
  margin: 0;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.2em;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
}

.eyebrow span {
  width: 26px;
  height: 1px;
  background: var(--green);
}

.hero h1 {
  max-width: 670px;
  margin: 26px 0 24px;
  font-size: clamp(54px, 7vw, 88px);
  line-height: 1.03;
  letter-spacing: -0.055em;
}

.hero h1 em {
  color: transparent;
  font-style: normal;
  background: linear-gradient(100deg, #e8fffa 5%, var(--green) 54%, var(--blue));
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-description {
  max-width: 610px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}

.benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
  color: #c8d9e0;
  font-size: 14px;
}

.benefits li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.benefits li span {
  display: grid;
  width: 19px;
  height: 19px;
  place-items: center;
  border: 1px solid rgba(57, 229, 189, 0.32);
  border-radius: 50%;
  color: var(--green);
  font-size: 11px;
  background: rgba(57, 229, 189, 0.08);
}

.contact-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid rgba(178, 232, 230, 0.16);
  border-radius: 28px;
  background:
    linear-gradient(145deg, rgba(19, 55, 74, 0.86), rgba(7, 25, 40, 0.96)),
    var(--surface-strong);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.contact-card::before {
  position: absolute;
  top: -100px;
  right: -100px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  content: "";
  background: rgba(55, 231, 188, 0.11);
  filter: blur(18px);
}

.contact-card__topline {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.contact-card__label,
.contact-card__status {
  font-size: 12px;
}

.contact-card__label {
  color: #b4c7d0;
  letter-spacing: 0.12em;
}

.contact-card__status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid rgba(57, 229, 189, 0.16);
  border-radius: 999px;
  color: #8ef6d9;
  background: rgba(57, 229, 189, 0.07);
}

.contact-card__status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px rgba(57, 229, 189, 0.9);
}

.wechat-icon {
  position: relative;
  width: 66px;
  height: 66px;
  margin: 42px 0 24px;
  border-radius: 20px;
  background: linear-gradient(145deg, var(--green), var(--green-strong));
  box-shadow: 0 18px 38px rgba(28, 207, 163, 0.22);
}

.wechat-icon span {
  position: absolute;
  border-radius: 50%;
  background: #072027;
}

.wechat-icon span:first-child {
  top: 19px;
  left: 18px;
  width: 8px;
  height: 8px;
  box-shadow: 22px 0 0 #072027;
}

.wechat-icon span:last-child {
  right: 15px;
  bottom: 14px;
  width: 9px;
  height: 9px;
  box-shadow: -24px 0 0 #072027;
}

.contact-card h2 {
  margin: 0;
  font-size: 25px;
  letter-spacing: -0.02em;
}

.contact-card__hint {
  margin: 10px 0 24px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.wechat-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(2, 17, 27, 0.46);
}

.wechat-box__caption {
  color: var(--muted);
  font-size: 13px;
}

.wechat-box strong {
  color: #e5fff8;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 23px;
  letter-spacing: 0.08em;
}

.copy-button {
  display: flex;
  width: 100%;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 14px;
  border: 0;
  border-radius: 16px;
  color: #052019;
  font: inherit;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  background: linear-gradient(100deg, #76f1d1, var(--green));
  box-shadow: 0 12px 30px rgba(33, 219, 174, 0.17);
  transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.copy-button:hover {
  transform: translateY(-2px);
  filter: brightness(1.04);
  box-shadow: 0 16px 34px rgba(33, 219, 174, 0.25);
}

.copy-button:active {
  transform: translateY(0);
}

.copy-button:focus-visible {
  outline: 3px solid rgba(129, 240, 218, 0.34);
  outline-offset: 3px;
}

.copy-button.is-copied {
  background: #effffb;
}

.copy-button__icon {
  position: relative;
  width: 16px;
  height: 17px;
  border: 1.8px solid currentColor;
  border-radius: 4px;
}

.copy-button__icon::before {
  position: absolute;
  top: -5px;
  left: 4px;
  width: 7px;
  height: 7px;
  border: 1.8px solid currentColor;
  border-radius: 3px;
  content: "";
  background: inherit;
}

.copy-status {
  min-height: 20px;
  margin: 12px 0 0;
  color: #7893a2;
  font-size: 12px;
  text-align: center;
}

.steps {
  display: grid;
  grid-template-columns: 0.55fr 1.45fr;
  gap: 62px;
  align-items: start;
  padding: 44px 0 84px;
  border-top: 1px solid var(--line);
}

.steps-heading h2 {
  margin: 14px 0 0;
  font-size: 30px;
  letter-spacing: -0.035em;
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps-list li {
  min-height: 156px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(9, 28, 43, 0.58);
}

.step-number {
  display: block;
  margin-bottom: 24px;
  color: var(--green);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
}

.steps-list h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.steps-list p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 78px;
  border-top: 1px solid var(--line);
  color: #66808f;
  font-size: 12px;
}

.noscript-message {
  position: fixed;
  right: 16px;
  bottom: 16px;
  left: 16px;
  z-index: 10;
  padding: 14px;
  border-radius: 12px;
  color: #061f18;
  text-align: center;
  background: var(--green);
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 52px;
    padding: 72px 0 70px;
  }

  .hero-copy {
    text-align: center;
  }

  .eyebrow,
  .benefits {
    justify-content: center;
  }

  .hero-description {
    margin-inline: auto;
  }

  .contact-card {
    width: min(100%, 520px);
    margin: 0 auto;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media (max-width: 620px) {
  .page-shell {
    width: min(100% - 32px, 1180px);
  }

  .site-header {
    min-height: 76px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }

  .brand-name {
    font-size: 15px;
  }

  .header-tag {
    font-size: 12px;
  }

  .hero {
    min-height: auto;
    padding: 58px 0 60px;
  }

  .hero h1 {
    margin-block: 22px 20px;
    font-size: clamp(46px, 15vw, 64px);
  }

  .hero-description {
    font-size: 16px;
    line-height: 1.75;
  }

  .desktop-break {
    display: none;
  }

  .benefits {
    gap: 12px 16px;
    margin-top: 28px;
    font-size: 13px;
  }

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

  .wechat-icon {
    margin-top: 34px;
  }

  .wechat-box strong {
    font-size: 21px;
  }

  .steps {
    padding: 38px 0 60px;
  }

  .steps-list {
    grid-template-columns: 1fr;
  }

  .steps-list li {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 4px 10px;
    min-height: 0;
  }

  .step-number {
    grid-row: 1 / span 2;
    margin: 2px 0 0;
  }

  .site-footer {
    flex-direction: column;
    justify-content: center;
    padding: 22px 0;
    text-align: center;
  }
}

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

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