:root {
  --purple: #667eea;
  --green: #25d366;
  --ink: #1f2937;
  --muted: #4b5563;
  --card: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  background: linear-gradient(135deg, #667eea 0%, #25d366 100%);
}

a {
  color: inherit;
}

svg {
  display: block;
}

.geo {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.geo svg {
  width: 100%;
  height: 100%;
}

.site {
  position: relative;
  z-index: 1;
}

.bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 7vw;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  font-size: 18px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav a {
  color: #fff;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(8px);
}

.hero {
  margin: 10px 7vw 0;
  color: #fff;
  clip-path: polygon(0 0, 100% 0, 100% 86%, 0 100%);
  background: linear-gradient(120deg, rgba(102, 126, 234, 0.55), rgba(37, 211, 102, 0.28));
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 28px 28px 8px 36px;
  padding: 42px 36px 72px;
}

.hero h1 {
  margin: 8px 0 16px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.25;
  max-width: 16ch;
}

.hero p {
  margin: 0 0 12px;
  max-width: 62ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 12px 28px;
  border-radius: 999px;
  background: #fff;
  color: #166534;
  font-weight: 800;
  text-decoration: none;
  margin-top: 12px;
  box-shadow: 0 12px 30px rgba(22, 101, 52, 0.18);
}

.wrap {
  width: min(1080px, calc(100% - 10vw));
  margin: 0 auto;
  padding: 8px 0 40px;
}

.panel {
  background: var(--card);
  border-radius: 24px;
  padding: 28px 26px;
  margin: 0 0 18px;
  box-shadow: 0 18px 40px rgba(30, 41, 59, 0.12);
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 26px;
  line-height: 1.35;
}

.lead {
  color: var(--muted);
  margin: 0 0 16px;
}

.overlap {
  display: grid;
  gap: 0;
  padding-bottom: 36px;
}

.occard {
  background: #fff;
  border-radius: 22px;
  padding: 22px 22px 18px;
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.12);
  border: 1px solid rgba(102, 126, 234, 0.12);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.occard:nth-child(odd) {
  transform: rotate(-1.4deg);
  margin-right: 8%;
}

.occard:nth-child(even) {
  transform: rotate(1.6deg);
  margin-left: 8%;
  margin-top: -28px;
}

.occard:hover {
  transform: rotate(0deg) translateY(-6px);
  box-shadow: 0 22px 40px rgba(15, 23, 42, 0.18);
  z-index: 2;
}

.occard .ico {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #667eea, #25d366);
  display: grid;
  place-items: center;
  margin-bottom: 10px;
}

.occard h3 {
  margin: 0 0 8px;
}

.occard p {
  margin: 0;
  color: var(--muted);
}

.zigzag {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.zstep {
  width: min(520px, 100%);
  background: #fff;
  border-radius: 20px;
  padding: 18px 20px;
  position: relative;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
}

.zstep:nth-child(odd) {
  align-self: flex-start;
}

.zstep:nth-child(even) {
  align-self: flex-end;
}

.zstep::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-right: 3px solid #25d366;
  border-bottom: 3px solid #25d366;
}

.zstep:nth-child(odd)::after {
  right: -28px;
  top: 50%;
  transform: rotate(-45deg);
}

.zstep:nth-child(even)::after {
  left: -28px;
  top: 50%;
  transform: rotate(135deg);
}

.zstep:last-child::after {
  display: none;
}

.znum {
  display: inline-block;
  min-width: 36px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea, #25d366);
  color: #fff;
  font-weight: 800;
  margin-bottom: 8px;
}

.zstep h3 {
  margin: 0 0 6px;
}

.zstep p {
  margin: 0;
  color: var(--muted);
}

.glass {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.glass article {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 20px;
  padding: 20px;
}

.glass h3 {
  margin: 0 0 10px;
}

.glass p {
  margin: 0 0 8px;
  color: var(--muted);
}

.limits {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.limits li {
  list-style: none;
  background: #f8fafc;
  border-radius: 16px;
  padding: 14px 16px;
}

.limits ul {
  margin: 0;
  padding: 0;
  display: contents;
}

.faq-float {
  display: grid;
  gap: 12px;
}

.faq-float details {
  background: #fff;
  border-radius: 22px;
  padding: 4px 6px;
  box-shadow: 0 14px 30px rgba(102, 126, 234, 0.14);
}

.faq-float summary {
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 700;
}

.faq-float details p {
  margin: 0;
  padding: 0 16px 16px;
  color: var(--muted);
}

.footer {
  color: #ecfdf5;
  padding: 28px 7vw 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
}

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

@media (max-width: 800px) {
  .bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .glass,
  .limits {
    grid-template-columns: 1fr;
  }

  .zstep:nth-child(odd)::after,
  .zstep:nth-child(even)::after {
    display: none;
  }

  .occard:nth-child(odd),
  .occard:nth-child(even) {
    margin: 0 0 12px;
    transform: none;
  }
}

#news .news-list { display: grid; gap: 0; }
#news article { background: var(--card); border-radius: 18px; padding: 18px 20px; margin: 0 0 -8px; box-shadow: 0 12px 30px rgba(102, 126, 234, .18); position: relative; }
#news article:nth-child(even) { transform: translateX(18px); }
#news article:nth-child(odd) { transform: translateX(-6px); }
#news h3 { margin: 0 0 6px; color: var(--ink); }
#news time { color: var(--purple); font-size: 12px; }
#news p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
@media (max-width: 700px) { #news article:nth-child(even), #news article:nth-child(odd) { transform: none; } }