:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --surface: rgba(255, 255, 255, 0.92);
  --line: rgba(15, 23, 42, 0.08);
  --line-strong: rgba(15, 23, 42, 0.12);
  --text: #111827;
  --muted: #667085;
  --accent: #111827;
  --accent-red: #ff315c;
  --accent-cyan: #2fd6ff;
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(47, 214, 255, 0.1), transparent 20%),
    radial-gradient(circle at top right, rgba(255, 49, 92, 0.08), transparent 22%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
}

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

.page-shell {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 40px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(247, 248, 251, 0.95));
  border: 1px solid rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

.brand-mark-a,
.brand-mark-b {
  position: absolute;
  inset: 10px 12px;
  border-radius: 999px;
}

.brand-mark-a {
  background: rgba(47, 214, 255, 0.9);
  transform: translateX(-3px);
}

.brand-mark-b {
  background: rgba(255, 49, 92, 0.9);
  transform: translateX(3px);
  mix-blend-mode: multiply;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.04em;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.85rem;
}

.hero-header {
  display: grid;
  justify-items: center;
  gap: 18px;
  margin-bottom: 56px;
  padding: 12px 0 8px;
  text-align: center;
}

.hero-header h1 {
  margin: 0;
  font-size: clamp(3.8rem, 8.2vw, 7rem);
  line-height: 0.92;
  letter-spacing: -0.05em;
}

.hero-subtitle {
  margin: 4px 0 0;
  color: #344054;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  letter-spacing: 0.02em;
}

.hero-slogan {
  margin: -2px 0 0;
  color: #98a2b3;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.hero-card {
  display: grid;
  gap: 36px;
  padding: 52px 40px 44px;
  border: 1px solid var(--line-strong);
  border-radius: 32px;
  background: var(--surface);
  box-shadow: var(--shadow);
  justify-items: center;
  text-align: center;
}

.hero-geo {
  display: grid;
  gap: 16px;
  width: min(100%, 760px);
  justify-items: center;
  padding: 28px 24px 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(47, 214, 255, 0.08), rgba(255, 49, 92, 0.04)),
    #ffffff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.geo-title {
  margin: 0;
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: #111827;
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.region-tag {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  vertical-align: middle;
}

.region-tag-yunnan {
  background: rgba(47, 214, 255, 0.12);
  border-color: rgba(47, 214, 255, 0.24);
  color: #0f5d78;
}

.region-tag-chengdu {
  background: rgba(255, 49, 92, 0.1);
  border-color: rgba(255, 49, 92, 0.18);
  color: #a61b43;
}

.region-tag-chongqing {
  background: rgba(17, 24, 39, 0.08);
  border-color: rgba(17, 24, 39, 0.12);
  color: #111827;
}

.region-tag-guizhou {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.2);
  color: #0f766e;
}

.geo-copy,
.geo-owner-line,
.form-intro,
.form-status {
  margin: 0;
  color: #334155;
  line-height: 1.8;
}

.geo-copy {
  max-width: 760px;
  font-size: 1rem;
}

.geo-separator {
  display: inline;
  margin: 0 4px;
}

.geo-owner-line {
  font-size: 1rem;
}

.geo-owner-line strong {
  color: #111827;
  font-weight: 800;
}

.form-intro {
  color: #344054;
  font-size: 1rem;
  font-weight: 600;
  margin-top: -4px;
}

.contact-form {
  display: grid;
  gap: 18px;
  max-width: 560px;
  width: min(100%, 560px);
}

.field {
  display: grid;
  gap: 10px;
  text-align: left;
}

.field span {
  font-size: 0.92rem;
  font-weight: 600;
  color: #334155;
}

.field input {
  width: 100%;
  padding: 16px 18px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 16px;
  background: #ffffff;
  color: var(--text);
  font: inherit;
  outline: none;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.field input:focus {
  border-color: rgba(47, 214, 255, 0.75);
  box-shadow: 0 0 0 4px rgba(47, 214, 255, 0.12);
}

.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.form-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: none;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: 0 16px 36px rgba(17, 24, 39, 0.12);
  transition:
    transform 160ms ease,
    opacity 160ms ease;
}

.primary-button:hover {
  transform: translateY(-1px);
}

.primary-button:disabled {
  opacity: 0.6;
}

.form-status.success {
  color: #0f766e;
}

.form-status.error {
  color: #be123c;
}

.footer {
  display: flex;
  justify-content: center;
  margin-top: 24px;
  padding: 12px 6px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 20px, 1040px);
    padding-top: 14px;
  }

  .topbar {
    padding: 14px 16px;
    margin-bottom: 28px;
  }

  .hero-card {
    gap: 28px;
    padding: 32px 20px 28px;
    border-radius: 24px;
  }

  .hero-header h1 {
    max-width: none;
  }

  .hero-header {
    gap: 12px;
    margin-bottom: 36px;
    padding: 4px 0;
  }

  .hero-geo {
    gap: 14px;
    padding: 22px 16px 20px;
  }

  .geo-owner-line {
    font-size: 0.95rem;
  }

  .form-actions,
  .footer {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
}