:root {
  color-scheme: light;
  --ink: #071d2b;
  --muted: #4a5b65;
  --blue: #0075ff;
  --orange: #ff8000;
  --green: #a6e847;
  --peach: #fff1e5;
  --border: #d2dce0;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.site-header { border-bottom: 1px solid var(--border); }
.header-inner {
  width: min(1360px, calc(100% - 64px));
  min-height: 88px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; font-size: 25px; font-weight: 800; letter-spacing: -.6px; }
.brand-symbol {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 50%;
  color: #fff;
  background: var(--orange);
  font-size: 16px;
  font-weight: 900;
  font-style: italic;
  letter-spacing: -1px;
}
.header-note { color: var(--muted); font-size: 14px; }
main { width: min(1056px, calc(100% - 64px)); margin: 0 auto; }
.intro { padding: 56px 0 42px; text-align: center; }
h1 { margin: 0; font-size: clamp(30px, 3.8vw, 52px); font-weight: 800; line-height: 1.4; letter-spacing: -1.5px; }
.marker { position: relative; z-index: 0; display: inline-block; }
.marker::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: -5px;
  right: -5px;
  bottom: 6px;
  height: 44%;
  background: #d6f4ad;
  border-radius: 52% 35% 48% 30%;
  transform: rotate(-2deg);
}
.platforms { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; align-items: stretch; }
.platform { position: relative; min-width: 0; border: 1px solid var(--border); background: #fff; }
.platform-classic { z-index: 1; border: 2px solid var(--orange); }
.platform-lite { margin-left: -1px; border-top-width: 2px; border-bottom-width: 2px; }
.platform-head { padding: 24px 32px 22px; text-align: center; }
.product-icon { width: 32px; height: 32px; margin: 0 auto 8px; display: block; border-radius: 7px; background: #24576b; }
.product-icon svg { width: 100%; height: 100%; padding: 2px; stroke: #fff; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
h2 { min-height: 36px; margin: 0 0 18px; font-size: 24px; line-height: 1.5; font-weight: 800; }
.badge { width: fit-content; margin: 0 auto 15px; padding: 1px 12px; border-radius: 7px; background: var(--green); font-size: 14px; }
.badge strong { font-weight: 800; }
.payment-headline { min-height: 68px; display: flex; justify-content: center; align-items: baseline; flex-wrap: wrap; gap: 7px; }
.payment-headline strong { font-size: 54px; font-weight: 800; line-height: 1.25; letter-spacing: -2px; }
.payment-headline > span { font-size: 18px; font-weight: 700; }
.payment-corporate strong { font-size: 36px; letter-spacing: -.8px; }
.payment-corporate { align-items: center; }
.platform-caption { min-height: 28px; margin: 7px 0 22px; color: var(--muted); font-size: 15px; }
.entry-button {
  display: flex;
  width: 100%;
  min-height: 49px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--blue);
  border-radius: 28px;
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  font-size: 17px;
  line-height: 1.5;
  font-weight: 700;
  padding: 10px 18px;
  transition: background .15s ease, border-color .15s ease;
}
.entry-button:hover { background: #005ce0; border-color: #005ce0; }
.entry-button:active { background: #0049b7; }
.entry-button:focus-visible { outline: 3px solid #24576b; outline-offset: 4px; }
.domain { margin: 10px 0 0; color: #66757d; font-size: 14px; overflow-wrap: anywhere; }
.facts { margin: 0; padding: 0; list-style: none; }
.facts li { min-height: 61px; padding: 17px 26px; display: flex; align-items: center; gap: 12px; font-size: 16px; line-height: 1.6; }
.facts li:nth-child(odd) { background: var(--peach); }
.facts strong { font-weight: 700; }
.check { flex: 0 0 19px; align-self: flex-start; margin-top: 3px; font-size: 18px; line-height: 22px; text-align: center; }
footer { padding: 30px 16px; color: #687880; text-align: center; font-size: 14px; }
@media (max-width: 800px) {
  main { width: calc(100% - 32px); }
  .header-inner { width: calc(100% - 40px); min-height: 72px; }
  .brand { font-size: 21px; }
  .intro { padding: 40px 0 30px; }
  .platform-head { padding-right: 22px; padding-left: 22px; }
  h2 { font-size: 21px; }
  .payment-headline strong { font-size: 46px; }
  .payment-corporate strong { font-size: 29px; }
  .payment-headline > span { font-size: 16px; }
  .platform-caption { min-height: 48px; }
  .facts li { padding-right: 20px; padding-left: 20px; }
}
@media (max-width: 620px) {
  .header-inner { width: calc(100% - 32px); gap: 10px; }
  .brand { font-size: 20px; gap: 8px; }
  .brand-symbol { width: 35px; height: 35px; font-size: 14px; }
  .header-note { font-size: 12px; }
  .intro { padding: 30px 0 25px; }
  h1 { font-size: clamp(24px, 6.9vw, 34px); letter-spacing: -.7px; }
  .platforms { grid-template-columns: 1fr; gap: 22px; }
  .platform-lite { margin-left: 0; border-width: 1px; }
  .platform-head { padding: 24px; }
  h2 { font-size: 23px; margin-bottom: 14px; }
  .payment-headline { min-height: 57px; }
  .payment-headline strong { font-size: 48px; }
  .payment-corporate strong { font-size: 33px; }
  .platform-caption { min-height: auto; margin: 7px 0 20px; font-size: 14px; }
  .facts li { padding: 16px 22px; }
  footer { padding: 25px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .entry-button { transition: none; }
}