:root {
  --ink: #152033;
  --muted: #51606f;
  --line: #d8e1eb;
  --blue: #1268d6;
  --cyan: #07a7c8;
  --green: #1f9d65;
  --gold: #f4b63d;
  --paper: #f7f9fc;
  --white: #ffffff;
  --shadow: 0 16px 42px rgba(21, 32, 51, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  background: #e9eef5;
  color: var(--ink);
  font-family: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

body {
  margin: 0;
  min-height: 100vh;
}

a {
  color: inherit;
}

.page-shell {
  width: min(100%, 430px);
  margin: 0 auto;
  min-height: 100vh;
  background: var(--paper);
  box-shadow: 0 0 0 1px rgba(21, 32, 51, 0.05), 0 24px 80px rgba(21, 32, 51, 0.22);
}

.hero {
  min-height: 82svh;
  padding: 24px 22px 28px;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(18, 104, 214, 0.98), rgba(7, 167, 200, 0.9)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.14) 0 1px, transparent 1px 24px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.brand-bar {
  display: flex;
  width: fit-content;
  min-height: 44px;
  align-items: center;
  padding-bottom: 7px;
  border-bottom: 4px solid var(--gold);
  color: #ffffff;
  font-size: clamp(34px, 10vw, 44px);
  font-weight: 950;
  line-height: 1;
}

.offer-card {
  margin-top: 24px;
  padding: 18px 17px 17px;
  background: var(--gold);
  color: #12223a;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 8px;
  box-shadow: 0 24px 54px rgba(7, 39, 84, 0.32);
}

.offer-main {
  font-size: clamp(42px, 12vw, 58px);
  line-height: 1.03;
  font-weight: 950;
}

.offer-sub {
  margin-top: 9px;
  color: rgba(18, 34, 58, 0.76);
  font-size: 14px;
  line-height: 1.5;
  font-weight: 800;
}

.hero h1 {
  margin: 20px 0 0;
  max-width: 340px;
  font-size: 26px;
  line-height: 1.18;
  font-weight: 900;
}

.hero-copy {
  margin: 10px 0 0;
  max-width: 330px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 15px;
  line-height: 1.62;
}

.hero-cta {
  margin-top: 20px;
}

.cta-button {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  width: 100%;
  background: var(--gold);
  color: #152033;
  border: 0;
  border-radius: 8px;
  text-decoration: none;
  font-size: 20px;
  font-weight: 950;
  box-shadow: var(--shadow);
}

.partner {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  line-height: 1.7;
  text-align: center;
}

.model-preview {
  margin-top: -34px;
  padding: 0 22px 30px;
  position: relative;
}

.model-preview::before {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  top: -14px;
  height: 28px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.48);
  filter: blur(10px);
}

.section {
  padding: 30px 22px;
}

.section-kicker {
  width: fit-content;
  min-height: 24px;
  margin-bottom: 8px;
  padding: 3px 9px;
  border-radius: 999px;
  background: #e6f6fb;
  color: #057fa0;
  font-size: 13px;
  font-weight: 900;
}

.section-title {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 12px;
  background: var(--blue);
  color: var(--white);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 800;
}

.model-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.model-list li,
.advantage {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 22px rgba(21, 32, 51, 0.06);
}

.model-list li {
  padding: 14px 15px;
  font-size: 16px;
  line-height: 1.45;
}

.model-list b {
  color: var(--blue);
}

.support-note {
  margin: 16px 0 0;
  color: var(--green);
  font-size: 16px;
  font-weight: 900;
}

.advantages {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.advantage {
  padding: 16px;
}

.advantage h3 {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.35;
}

.advantage p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

@media (min-width: 431px) {
  body {
    padding: 24px 0;
  }
}