:root {
  --text: #111111;
  --muted: #55565f;
  --bg-soft: #f4f5f8;
  --card-bg: #fffdf5;
  --brand: #ef4437;
  --brand-hover: #d93a2f;
  --accent-warm: #d98657;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Noto Sans CJK SC", sans-serif;
}

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

.container {
  width: min(1240px, calc(100% - 80px));
  margin: 0 auto;
}

.topbar {
  border-bottom: 1px solid #f0f0f4;
  background: #fff;
}

.topbar-inner {
  height: 72px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}

.brand img {
  width: 154px;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
}

.nav a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 15px;
  color: #2b2c36;
  white-space: nowrap;
}

.nav a.active {
  color: var(--brand);
}

.chev {
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid #8a8b95;
  margin-top: 2px;
}

.cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn {
  height: 40px;
  padding: 0 18px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary {
  color: #fff;
  background: var(--brand);
}

.btn-outline {
  color: var(--brand);
  background: #fff;
  border-color: #efb0a8;
}

.btn-download {
  min-width: 220px;
  height: 56px;
  padding: 0 42px;
  border-radius: 8px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #fff;
  background: var(--brand);
  box-shadow: 0 10px 28px rgba(239, 68, 55, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-download:hover {
  background: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 14px 34px rgba(239, 68, 55, 0.42);
}

.hero {
  padding: 36px 0 48px;
  overflow: hidden;
  position: relative;
  background: #fff;
}

.hero::before {
  content: "";
  position: absolute;
  left: -120px;
  top: -60px;
  width: 58%;
  height: 130%;
  background: radial-gradient(circle at 45% 42%, #ffd8d0 0%, rgba(255, 216, 208, 0.35) 38%, #fff 72%);
  transform: rotate(-14deg);
  z-index: 0;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 20px;
}

.hero-media {
  text-align: center;
}

.hero-media img {
  width: min(520px, 100%);
  height: auto;
}

.hero-copy {
  padding-left: 8px;
}

.hero-title {
  margin: 0;
  font-size: clamp(44px, 5.8vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.hero-title .accent {
  color: var(--brand);
}

.hero-subtitle {
  margin: 20px 0 30px;
  max-width: 520px;
  font-size: clamp(18px, 2vw, 26px);
  line-height: 1.45;
  font-weight: 700;
}

.hero-actions {
  display: flex;
}

.section {
  padding: 64px 0;
}

.section.soft {
  background: var(--bg-soft);
}

.title {
  margin: 0 0 28px;
  text-align: center;
  font-size: clamp(36px, 4.8vw, 58px);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.title .accent {
  background: linear-gradient(90deg, #111 0%, var(--accent-warm) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.card {
  background: var(--card-bg);
  border-radius: 18px;
  padding: 28px 26px;
  border: 1px solid #f0ead9;
}

.card-highlight {
  box-shadow: 0 0 0 1px #f3e8d4, 0 18px 36px rgba(255, 150, 90, 0.18);
}

.card h3 {
  margin: 0 0 10px;
  font-size: clamp(28px, 3vw, 46px);
  line-height: 1.15;
  font-weight: 800;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(17px, 1.9vw, 30px);
  line-height: 1.45;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.feature {
  text-align: center;
  padding: 8px 10px;
}

.feature-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 14px;
  color: var(--brand);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature h3 {
  margin: 0 0 10px;
  color: var(--brand);
  font-size: clamp(22px, 2.2vw, 36px);
  line-height: 1.25;
  font-weight: 800;
}

.feature p {
  margin: 0 auto 12px;
  max-width: 340px;
  color: #454754;
  font-size: clamp(16px, 1.7vw, 28px);
  line-height: 1.5;
}

.feature a {
  color: var(--brand);
  font-size: clamp(16px, 1.6vw, 26px);
  text-decoration: underline;
  font-weight: 700;
}

.about-hero-note {
  margin: 12px 0 28px;
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 28px);
  line-height: 1.5;
}

.about-showcase {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.about-showcase img {
  width: 100%;
  display: block;
  border-radius: 14px;
}

.footer {
  margin-top: 24px;
  padding: 22px 0 30px;
  text-align: center;
  border-top: 1px solid #f0f0f4;
  color: #7b7d8a;
  font-size: 14px;
}

@media (max-width: 980px) {
  .container {
    width: min(1240px, calc(100% - 28px));
  }

  .topbar-inner {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

  .hero-grid,
  .cards-grid,
  .feature-grid,
  .about-showcase {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    padding-left: 0;
  }

  .btn-download {
    width: 100%;
    max-width: 360px;
  }
}