:root {
  --mint: #e8fff6;
  --teal: #0d9488;
  --teal-deep: #0f766e;
  --ink: #134e4a;
  --card: #ffffff;
  --soft: #ccfbf1;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, #d1fae5 0, transparent 28%),
    radial-gradient(circle at 90% 0, #ccfbf1 0, transparent 24%),
    var(--mint);
  font-family: "Trebuchet MS", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16.5px;
  line-height: 1.7;
}

a {
  color: inherit;
}

.shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
}

.logo svg {
  width: 36px;
  height: 36px;
}

.menu {
  display: flex;
  gap: 10px;
}

.menu a {
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--card);
  box-shadow: 0 8px 24px rgba(13, 148, 136, 0.08);
  font-size: 14px;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  padding: 28px 0 48px;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(2rem, 4.4vw, 3.1rem);
  line-height: 1.2;
}

.hero p {
  margin: 0 0 14px;
}

.cta {
  display: inline-block;
  margin-top: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  background: var(--teal);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(13, 148, 136, 0.28);
}

.stage {
  position: relative;
  min-height: 360px;
}

.phone {
  width: 230px;
  height: 360px;
  margin: 0 auto;
  padding: 18px 14px;
  border-radius: 36px;
  background: #042f2e;
  box-shadow: 0 24px 50px rgba(15, 118, 110, 0.25);
}

.phone-screen {
  height: 100%;
  border-radius: 26px;
  background: linear-gradient(180deg, #f0fdfa, #fff);
  padding: 16px 12px;
}

.chip {
  height: 10px;
  width: 72px;
  margin: 0 auto 16px;
  border-radius: 999px;
  background: #99f6e4;
}

.bubble {
  max-width: 86%;
  margin-bottom: 10px;
  padding: 10px 12px;
  border-radius: 16px;
  background: #fff;
  font-size: 12px;
  box-shadow: 0 6px 16px rgba(13, 148, 136, 0.08);
}

.bubble.me {
  margin-left: auto;
  background: #ccfbf1;
}

.file-float {
  position: absolute;
  width: 170px;
  padding: 14px 14px 14px 42px;
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 16px 40px rgba(15, 118, 110, 0.16);
  font-size: 13px;
}

.file-float::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 16px;
  width: 18px;
  height: 22px;
  border-radius: 4px;
  background: var(--teal);
}

.file-a {
  top: 28px;
  right: 0;
}

.file-b {
  bottom: 36px;
  left: 0;
}

.block {
  padding: 36px 0;
}

.block h2 {
  margin: 0 0 16px;
  font-size: 1.7rem;
}

.block p {
  margin: 0 0 14px;
}

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 22px;
}

.card {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 14px;
  padding: 20px;
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 10px 30px rgba(13, 148, 136, 0.08);
}

.icon {
  width: 52px;
  height: 52px;
  border-radius: 18px;
  background: var(--soft);
  display: grid;
  place-items: center;
}

.icon svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 1.02rem;
}

.card p {
  margin: 0;
  font-size: 14px;
}

.badges {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 12px;
}

.badge {
  text-align: center;
  padding: 8px 8px 18px;
}

.badge em {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  font-style: normal;
  font-weight: 700;
  box-shadow: 0 10px 20px rgba(13, 148, 136, 0.22);
}

.badge strong {
  display: block;
  margin-bottom: 6px;
}

.badge p {
  margin: 0;
  font-size: 13px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 20px;
}

.pane {
  padding: 24px;
  border-radius: 24px;
  background: var(--card);
}

.pane h3 {
  margin: 0 0 12px;
  color: var(--teal-deep);
}

.pane li {
  margin: 0 0 10px;
}

.faq-grid details {
  margin-bottom: 12px;
  padding: 16px 18px;
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 8px 24px rgba(13, 148, 136, 0.08);
}

summary {
  cursor: pointer;
  font-weight: 700;
}

.foot {
  margin: 24px auto 36px;
  width: min(1180px, calc(100% - 40px));
  padding: 22px 24px;
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 18px 50px rgba(15, 118, 110, 0.16);
}

.foot p {
  margin: 0 0 8px;
  font-size: 13px;
}

@media (max-width: 900px) {
  .hero,
  .cards,
  .split,
  .badges {
    grid-template-columns: 1fr;
  }

  .file-a,
  .file-b {
    position: static;
    margin: 12px auto 0;
  }

  .stage {
    min-height: 0;
  }

  .menu {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}

#news .news-list { display: grid; gap: 16px; }
#news article { background: var(--card); border-radius: 24px; padding: 20px 22px; box-shadow: 0 10px 30px rgba(13, 148, 136, .08); }
#news h3 { margin: 0 0 8px; color: var(--ink); font-size: 17px; }
#news time { display: inline-block; background: var(--soft); color: var(--teal); border-radius: 999px; padding: 2px 10px; font-size: 12px; margin-bottom: 8px; }
#news p { margin: 0; color: #3f6561; font-size: 14px; }