/* ─── PC端样式 ─── */

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--text-dark);
  background: var(--white);
  width: 1200px;
  margin: 0 auto;
  overflow-x: hidden;
}

/* ─── NAV ─── */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 60px; height: 68px;
  background: rgba(255,255,255,0.95);
  border-bottom: 1px solid rgba(255,77,148,0.08);
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 18px; color: var(--pink-500);
}
.nav-logo {
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--pink-gradient);
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 16px;
}
.nav-links { display: flex; gap: 36px; list-style: none; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--text-body); text-decoration: none; }
.nav-cta {
  padding: 8px 22px; border-radius: 18px;
  background: var(--pink-gradient);
  color: white; font-size: 13px; font-weight: 600;
  border: none;
}

/* ─── HERO ─── */
.hero {
  text-align: center;
  padding: 90px 60px 80px;
  background: linear-gradient(180deg, #fff0f5 0%, #ffe0eb 40%, #ffd6e6 70%, #fff0f5 100%);
  position: relative;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 18px; border-radius: 20px;
  background: rgba(255,255,255,0.7);
  font-size: 13px; color: var(--pink-500); font-weight: 500;
  margin-bottom: 28px;
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--pink-500); }
.hero h1 { font-size: 56px; font-weight: 900; line-height: 1.2; margin-bottom: 20px; }
.hero h1 .accent {
  background: var(--pink-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero .desc { font-size: 17px; color: var(--text-body); line-height: 1.8; max-width: 540px; margin: 0 auto 36px; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 14px 32px; border-radius: 26px;
  background: var(--pink-gradient);
  color: white; font-size: 15px; font-weight: 600;
  border: none; text-decoration: none;
}
.btn-secondary {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 14px 32px; border-radius: 26px;
  background: rgba(255,255,255,0.8);
  color: var(--pink-500); font-size: 15px; font-weight: 600;
  border: 1.5px solid rgba(255,126,179,0.3);
  text-decoration: none;
}

/* ─── SECTIONS COMMON ─── */
section { padding: 80px 60px; }
.section-label { text-align: center; font-size: 13px; color: var(--pink-400); font-weight: 500; margin-bottom: 12px; letter-spacing: 1px; }
.section-title { text-align: center; font-size: 38px; font-weight: 800; line-height: 1.3; margin-bottom: 14px; }
.section-title .accent {
  background: var(--pink-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc { text-align: center; font-size: 15px; color: var(--text-light); line-height: 1.7; max-width: 520px; margin: 0 auto; }

/* ─── FEATURES ─── */
.features-section { background: var(--white); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 52px; }
.feature-card {
  background: var(--white);
  border: 1px solid rgba(255,126,179,0.1);
  border-radius: var(--radius);
  padding: 32px 26px;
}
.feature-icon {
  width: 48px; height: 48px; border-radius: 14px;
  background: var(--pink-100);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 18px;
}
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 13.5px; color: var(--text-light); line-height: 1.75; }

/* ─── CHAT DEMO ─── */
.chat-section { background: var(--pink-gradient-soft); }
.chat-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; margin-top: 0; }
.chat-mockup {
  background: var(--white);
  border-radius: 20px; padding: 28px 22px;
  box-shadow: 0 8px 32px rgba(255,77,148,0.1);
  max-width: 360px;
}
.chat-header {
  display: flex; align-items: center; gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--pink-200);
  margin-bottom: 18px;
}
.chat-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--pink-gradient);
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 700; font-size: 15px;
}
.chat-name { font-weight: 700; font-size: 14px; }
.chat-status { font-size: 11px; color: #4CAF50; }
.msg { max-width: 78%; padding: 10px 14px; border-radius: 16px; font-size: 13px; line-height: 1.65; margin-bottom: 12px; }
.msg-ai { background: var(--pink-100); color: var(--text-dark); border-bottom-left-radius: 4px; }
.msg-user { background: var(--pink-gradient); color: white; margin-left: auto; border-bottom-right-radius: 4px; }
.chat-right .section-label { text-align: left; }
.chat-right .section-title { text-align: left; font-size: 34px; }
.chat-right .section-desc { text-align: left; margin: 0 0 28px; }
.chat-features { display: flex; flex-direction: column; gap: 14px; }
.chat-feat {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px; background: var(--white);
  border-radius: 12px; border: 1px solid rgba(255,126,179,0.08);
}
.chat-feat-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--pink-100);
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; flex-shrink: 0;
}
.chat-feat h4 { font-size: 14px; font-weight: 600; }
.chat-feat p { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ─── DOWNLOAD ─── */
.download-section { background: var(--white); }
.download-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 36px; margin-top: 48px; max-width: 900px; margin-left: auto; margin-right: auto;
}
.download-card {
  background: var(--pink-gradient-soft);
  border-radius: 20px; padding: 40px 36px;
  border: 1px solid rgba(255,126,179,0.1);
  text-align: center;
}
.download-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.download-card .sub { font-size: 13px; color: var(--text-light); line-height: 1.7; margin-bottom: 28px; }
.qr-box {
  width: 180px; height: 180px; margin: 0 auto 20px;
  border-radius: 14px; background: var(--white);
  border: 2px dashed var(--pink-300);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 6px;
}
.qr-box .icon { font-size: 40px; }
.qr-box p { font-size: 12px; color: var(--text-muted); }
.download-label { font-size: 14px; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; }
.download-sublabel { font-size: 12px; color: var(--text-light); }
.app-badge {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 14px; padding: 6px 16px;
  border-radius: 16px; background: rgba(255,255,255,0.7);
  font-size: 12px; color: var(--pink-500); font-weight: 500;
}
.app-buttons { display: flex; flex-direction: column; gap: 14px; margin-top: 8px; }
.app-btn {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px; border-radius: 14px;
  background: var(--white);
  border: 1px solid rgba(255,126,179,0.12);
}
.app-btn-active {
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}
.app-btn-active:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255,126,179,0.18);
  border-color: rgba(255,126,179,0.25);
}
.app-btn-icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--pink-100);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
}
.app-btn h4 { font-size: 14px; font-weight: 600; }
.app-btn p { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.coming-tag {
  display: inline-block; padding: 2px 10px;
  border-radius: 8px; background: var(--pink-200);
  font-size: 11px; color: var(--pink-600); font-weight: 600;
  margin-left: 6px;
}
.download-tag {
  display: inline-block; padding: 2px 10px;
  border-radius: 8px; background: linear-gradient(135deg, var(--pink-500), var(--pink-600));
  font-size: 11px; color: white; font-weight: 600;
  margin-left: 6px;
}
.product-note { text-align: center; margin-top: 28px; font-size: 13px; color: var(--text-light); line-height: 1.7; }

/* ─── TESTIMONIALS ─── */
.testimonials-section { background: var(--pink-gradient-soft); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
.t-card {
  background: var(--white);
  border-radius: var(--radius); padding: 28px;
  border: 1px solid rgba(255,126,179,0.08);
}
.t-stars { color: #ffc107; font-size: 13px; margin-bottom: 14px; letter-spacing: 2px; }
.t-card p { font-size: 13.5px; color: var(--text-body); line-height: 1.7; margin-bottom: 18px; }
.t-user { display: flex; align-items: center; gap: 10px; }
.t-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--pink-gradient);
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 12px; font-weight: 700;
}
.t-name { font-size: 13px; font-weight: 600; }
.t-tag { font-size: 11px; color: var(--text-muted); }

/* ─── CTA ─── */
.cta-section {
  background: var(--pink-gradient);
  text-align: center; padding: 72px 60px;
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(255,255,255,0.12) 0%, transparent 60%);
}
.cta-section h2 { font-size: 36px; font-weight: 800; color: white; margin-bottom: 14px; position: relative; }
.cta-section .desc { font-size: 15px; color: rgba(255,255,255,0.85); margin-bottom: 32px; position: relative; line-height: 1.7; }
.btn-white {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 34px; border-radius: 26px;
  background: white; color: var(--pink-500);
  font-size: 15px; font-weight: 700;
  border: none; position: relative;
}

/* ─── FOOTER ─── */
footer { background: var(--pink-50); padding: 44px 60px 20px; }
.footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px; padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,126,179,0.1);
}
.footer-brand h3 { font-size: 17px; font-weight: 800; color: var(--pink-500); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.footer-brand p { font-size: 12px; color: var(--text-muted); line-height: 1.8; max-width: 260px; }
.footer-col h4 { font-size: 13px; font-weight: 700; margin-bottom: 14px; }
.footer-col a { display: block; font-size: 12px; color: var(--text-muted); text-decoration: none; margin-bottom: 8px; }
.footer-bottom { text-align: center; padding-top: 20px; font-size: 11px; color: var(--text-muted); line-height: 2; }