:root {
  color-scheme: light;
  --ink: #18221d;
  --muted: #627069;
  --paper: #f4f7f3;
  --surface: #ffffff;
  --line: #dce5dd;
  --accent: #2f6953;
  --accent-soft: #dcebe1;
  --warm: #e9d8bf;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--paper);
}

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

.shell {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 76px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 10px;
  color: #fff;
  background: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
}

.nav-link {
  color: var(--muted);
  font-size: 0.88rem;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
}

.language-switcher select {
  min-height: 36px;
  padding: 7px 30px 7px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  background: var(--surface);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}

.language-switcher select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.nav-link:hover,
.text-link:hover {
  color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: clamp(36px, 8vw, 112px);
  align-items: center;
  min-height: 590px;
  padding: 82px 0 96px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 650px;
  margin-bottom: 22px;
  font-size: clamp(2.8rem, 6vw, 5.8rem);
  font-weight: 650;
  line-height: 1.04;
  letter-spacing: 0;
}

.lede {
  max-width: 590px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.24rem);
  line-height: 1.8;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  font-size: 0.94rem;
  font-weight: 700;
}

.button.primary {
  color: #fff;
  background: var(--accent);
}

.button.secondary {
  color: var(--accent);
  background: transparent;
}

.button:hover {
  filter: brightness(0.96);
}

.visual {
  position: relative;
  min-height: 350px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
}

.visual::before,
.visual::after {
  position: absolute;
  content: "";
  border-radius: 50%;
}

.visual::before {
  width: 230px;
  height: 230px;
  top: -62px;
  right: -30px;
  background: var(--warm);
}

.visual::after {
  width: 180px;
  height: 180px;
  bottom: -64px;
  left: -42px;
  background: var(--accent-soft);
}

.focus-card {
  position: absolute;
  inset: 62px 34px 46px;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 26px;
  border: 1px solid rgba(24, 34, 29, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 35px rgba(24, 34, 29, 0.08);
}

.focus-label {
  color: var(--muted);
  font-size: 0.82rem;
}

.focus-title {
  max-width: 230px;
  margin: 12px 0 0;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.16;
}

.focus-line {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
}

.focus-line::before {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

.section {
  padding: 0 0 84px;
}

.section-heading {
  max-width: 580px;
  margin-bottom: 28px;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  line-height: 1.15;
  letter-spacing: 0;
}

.section-heading p,
.support-intro {
  color: var(--muted);
  line-height: 1.75;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.feature {
  min-height: 172px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

.feature-number {
  display: block;
  margin-bottom: 32px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.feature h3 {
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.feature p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.91rem;
  line-height: 1.65;
}

.footer {
  padding: 24px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.support-main {
  max-width: 760px;
  padding: 92px 0 78px;
}

.support-main h1 {
  max-width: 700px;
  margin-bottom: 16px;
  font-size: clamp(2.5rem, 6vw, 4.8rem);
}

.support-intro {
  max-width: 620px;
  margin-bottom: 42px;
  font-size: 1.08rem;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.support-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

.support-card h2 {
  margin-bottom: 14px;
  font-size: 1.2rem;
}

.support-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.75;
}

.support-card + .support-card {
  margin-top: 14px;
}

.support-stack {
  display: grid;
  gap: 14px;
}

.text-link {
  display: inline-block;
  margin-top: 18px;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 700;
}

.footer-link {
  margin-top: 0;
}

.privacy-main {
  max-width: 820px;
  padding: 88px 0 86px;
}

.privacy-main h1 {
  max-width: 760px;
  margin-bottom: 12px;
  font-size: clamp(2.6rem, 6vw, 4.8rem);
}

.privacy-date {
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 0.88rem;
}

.privacy-intro {
  max-width: 760px;
  margin-bottom: 48px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.85;
}

.privacy-section {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.privacy-section h2 {
  margin-bottom: 12px;
  font-size: 1.32rem;
}

.privacy-section p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.85;
}

.privacy-email {
  display: inline-block;
  margin-top: 16px;
  color: var(--accent);
  font-size: 0.96rem;
  font-weight: 700;
}

@media (max-width: 760px) {
  .shell {
    width: min(100% - 28px, 560px);
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding: 64px 0 72px;
  }

  .header-tools {
    gap: 8px;
  }

  .nav-link {
    font-size: 0.8rem;
  }

  .language-switcher select {
    max-width: 104px;
  }

  h1 {
    font-size: clamp(2.7rem, 14vw, 4.2rem);
  }

  .visual {
    min-height: 300px;
  }

  .feature-grid,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .privacy-main {
    padding-top: 64px;
  }

  .footer-row {
    flex-direction: column;
    gap: 8px;
  }
}