/* ============================================================
   zhengce-sudi.css —— 流水带 + VS对照卡 新骨架
   ============================================================ */

/* ---------- 首屏：左文右景 ---------- */
.sd-hero {
  position: relative;
  padding: 120px 0 140px;
  background: linear-gradient(120deg, #EAF3FA 0%, #F6FAF7 60%, #EAF6EF 100%);
  overflow: hidden;
}
.sd-hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px; align-items: center;
}
.sd-kicker {
  display: inline-block;
  background: #EAF3FA; color: #24495e;
  font-weight: 700; border-radius: 20px; padding: 5px 16px; font-size: 14px;
}
.sd-title { font-size: 44px; line-height: 1.3; color: #153238; margin: 16px 0 16px; }
.sd-sub { font-size: 16.5px; line-height: 1.95; color: #2E4A50; max-width: 560px; }
.sd-actions { margin-top: 26px; display: flex; gap: 14px; flex-wrap: wrap; }
.sd-hero-img img {
  width: 100%; border-radius: 18px;
  box-shadow: 0 18px 50px rgba(21,50,56,.18);
  aspect-ratio: 16/9; object-fit: cover;
}
.sd-hero-wave { position: absolute; left: 0; right: 0; bottom: 0; width: 100%; height: 120px; }

.split { line-height: 0; overflow: hidden; }
.split svg { display: block; width: 100%; height: 70px; }

/* ---------- 流水带 ---------- */
.sd-feed {
  position: relative;
  max-width: 900px;
  margin: 44px auto 0;
}
.sd-feed::before {
  content: "";
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 3px; margin-left: -1.5px;
  background: linear-gradient(#4493C4, #41B383, #FFCE33);
  border-radius: 3px;
}
.sd-post {
  position: relative;
  width: 50%;
  padding: 18px 0;
}
.sd-post-l { left: 0; padding-right: 36px; text-align: right; }
.sd-post-r { left: 50%; padding-left: 36px; }
.sd-post::after {
  content: "";
  position: absolute;
  top: 38px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid #4493C4;
}
.sd-post-l::after { right: -8px; }
.sd-post-r::after { left: -8px; border-color: #41B383; }
.sd-post-card {
  display: inline-block;
  text-align: left;
  background: #fff;
  border: 1px solid #E3EEE7;
  border-radius: 14px;
  padding: 22px 24px;
  box-shadow: 0 6px 18px rgba(21,50,56,.06);
}
.sd-post-date {
  display: inline-block;
  font-size: 12.5px; font-weight: 700;
  background: #EAF3FA; color: #24495e;
  border-radius: 20px; padding: 3px 12px;
  margin-bottom: 10px;
}
.sd-post-r .sd-post-date { background: #EAF6EF; color: #1c6b4b; }
.sd-post-card h3 { font-size: 18px; color: #153238; margin-bottom: 8px; }
.sd-post-card p { font-size: 14.5px; color: #58727A; line-height: 1.95; }

/* ---------- VS 对照 ---------- */
.sd-vs-wrap {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 90px 1fr;
  gap: 0;
  max-width: 860px;
  margin: 40px auto 0;
}
.sd-vs-col {
  border-radius: 16px;
  padding: 28px 30px;
}
.sd-vs-old { background: #EDF5F0; border: 1px solid #CFE2D6; }
.sd-vs-new { background: #EAF3FA; border: 1px solid #B9D8EC; }
.sd-vs-col h3 { font-size: 18px; margin-bottom: 14px; }
.sd-vs-old h3 { color: #58727A; }
.sd-vs-new h3 { color: #24495e; }
.sd-vs-col ul { list-style: none; display: grid; gap: 10px; }
.sd-vs-col li {
  padding-left: 18px; position: relative;
  color: #2E4A50; font-size: 14.5px; line-height: 1.7;
}
.sd-vs-old li::before { content: "旧"; position: absolute; left: 0; color: #8AA3AA; font-size: 12px; }
.sd-vs-new li::before { content: "新"; position: absolute; left: 0; color: #4493C4; font-size: 12px; font-weight: 700; }
.sd-vs-mid {
  display: flex; align-items: center; justify-content: center;
}
.sd-vs-mid::before {
  content: "VS";
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: #FFCE33; color: #153238;
  font-weight: 800; font-size: 18px;
  border-radius: 50%;
  box-shadow: 0 6px 16px rgba(255,206,51,.45);
}
.sd-vs-note { text-align: center; margin-top: 18px; color: #8AA3AA; font-size: 13.5px; }

/* ---------- 影响三卡 + 双图 ---------- */
.sd-effect-row { gap: 18px; }
.sd-effect-card {
  background: #fff; border: 1px solid #E3EEE7;
  border-radius: 14px; padding: 24px;
  border-top: 4px solid #41B383;
}
.sd-effect-card:nth-child(2) { border-top-color: #4493C4; }
.sd-effect-card:nth-child(3) { border-top-color: #FFCE33; }
.sd-effect-ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 10px;
  background: #EAF6EF; color: #1c6b4b; font-weight: 800;
  margin-bottom: 12px;
}
.sd-effect-card:nth-child(2) .sd-effect-ico { background: #EAF3FA; color: #24495e; }
.sd-effect-card:nth-child(3) .sd-effect-ico { background: #FFF7DC; color: #8a6d1a; }
.sd-effect-card h3 { font-size: 17px; color: #153238; margin-bottom: 8px; }
.sd-effect-card p { font-size: 14px; color: #58727A; line-height: 1.9; }
.sd-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 26px; }
.sd-imgs figure { margin: 0; }
.sd-imgs img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: 12px; }
.sd-imgs figcaption { margin-top: 8px; color: #8AA3AA; font-size: 13.5px; }

/* ---------- 提示条 ---------- */
.notice {
  margin: 46px 0;
  background: #FFF7DC;
  border: 1px dashed #FFCE33;
  border-radius: 12px;
  padding: 18px 24px;
  color: #5c4a12; line-height: 1.9; font-size: 15px;
}

/* ---------- 延伸卡 ---------- */
.sd-link-grid { gap: 16px; }
.sd-link {
  display: block; background: #fff;
  border: 1px solid #E3EEE7; border-radius: 10px;
  padding: 16px 20px; text-decoration: none;
  border-right: 4px solid #4493C4;
  transition: transform .2s ease, box-shadow .2s ease;
}
.sd-link:nth-child(3n+1) { border-right-color: #41B383; }
.sd-link:nth-child(3n) { border-right-color: #FFCE33; }
.sd-link strong { display: block; color: #153238; font-size: 16px; margin-bottom: 4px; }
.sd-link span { color: #8AA3AA; font-size: 13.5px; }
.sd-link:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(21,50,56,.12); }

/* ---------- CTA ---------- */
.sd-cta { position: relative; overflow: hidden; margin-top: 20px; }
.sd-cta > img { width: 100%; height: 300px; object-fit: cover; display: block; }
.sd-cta-mask { position: absolute; inset: 0; background: linear-gradient(270deg, rgba(21,50,56,.85), rgba(21,50,56,.35)); }
.sd-cta-inner {
  position: absolute; inset: 0; z-index: 1;
  display: flex; flex-direction: column; justify-content: center; align-items: flex-end;
  text-align: right; padding: 0 8%; color: #fff;
}
.sd-cta-inner h2 { font-size: 28px; margin-bottom: 10px; }
.sd-cta-inner p { opacity: .92; margin-bottom: 16px; max-width: 480px; line-height: 1.8; }

/* ---------- 窄屏 ---------- */
@media (max-width: 900px) {
  .sd-hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .sd-title { font-size: 32px; }
  .sd-feed::before { left: 20px; }
  .sd-post, .sd-post-r { width: 100%; left: 0; padding: 14px 0 14px 48px; text-align: left; }
  .sd-post-l { padding-right: 0; text-align: left; padding-left: 48px; }
  .sd-post-l::after, .sd-post-r::after { left: 12px; right: auto; }
  .sd-vs-wrap { grid-template-columns: 1fr; }
  .sd-vs-mid { padding: 10px 0; }
  .sd-imgs { grid-template-columns: 1fr; }
  .sd-cta-inner { align-items: flex-start; text-align: left; }
}
@media (max-width: 640px) {
  .sd-actions { flex-direction: column; align-items: stretch; }
  .sd-actions .btn { width: 100%; }
}