:root {
  --teal: #0e3d3b;
  --ink: #17211f;
  --paper: #e7f0ee;
  --card: #ffffff;
  --coral: #d85a3a;
  --line: #c5d6d2;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Avenir Next", "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 16.5px;
  line-height: 1.75;
}
a { color: #0f5c56; }
.shell { display: grid; grid-template-columns: 248px 1fr; min-height: 100vh; }
.side {
  background: var(--teal);
  color: #e7f6f3;
  padding: 22px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 18px; letter-spacing: 0.02em; }
.side p.tag { font-size: 13px; color: #b7ddd8; margin: 12px 0 18px; }
.nav { display: flex; flex-direction: column; gap: 6px; }
.nav a {
  color: #e7f6f3;
  text-decoration: none;
  padding: 10px 12px;
  background: transparent;
}
.nav a[aria-current="page"] { background: #14615c; color: #fff; }
.content { padding: 28px 32px 48px; }
.hero {
  display: grid;
  grid-template-columns: 1.35fr 0.75fr;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 22px;
  margin-bottom: 18px;
}
.hero h1 { margin: 0 0 10px; font-size: 32px; line-height: 1.25; color: var(--teal); }
.panel { background: #143f3c; color: #f3fffd; padding: 16px; }
.panel .panel-title { margin: 0 0 8px; font-size: 16px; color: #fff; font-weight: 700; }
.points { margin: 0; padding-left: 18px; }
.points li { margin: 0 0 6px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.btn {
  display: inline-block;
  background: var(--coral);
  color: #fff;
  text-decoration: none;
  padding: 10px 14px;
  font-weight: 700;
}
.btn.ghost { background: #fff; color: var(--teal); border: 1px solid var(--teal); }
.btn.slim { background: var(--teal); color: #fff; }
.block { background: var(--card); border: 1px solid var(--line); padding: 16px 18px 6px; margin: 0 0 14px; }
.block h2 { margin: 0 0 10px; font-size: 22px; color: #114743; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.comp, .item { border-top: 3px solid var(--coral); background: #f7fbfa; padding: 10px 12px 2px; margin: 0 0 10px; }
.comp h3, .item h3, .faq-item h3 { margin: 0 0 6px; font-size: 16.5px; }
.faq-item { border-bottom: 1px solid var(--line); padding: 8px 0; }
table { width: 100%; border-collapse: collapse; margin: 8px 0 12px; }
th, td { border-bottom: 1px solid var(--line); padding: 8px 6px; text-align: left; vertical-align: top; }
th { color: #0e3d3b; }
ol.steps { padding-left: 18px; }
ol.steps li { margin-bottom: 8px; }
.news { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; list-style: none; margin: 0; padding: 0 0 10px; }
.news li { background: #f4faf8; padding: 10px; border: 1px solid var(--line); }
.news h3 { margin: 0; font-size: 15.5px; }
.news time { color: #5d726e; font-size: 12px; }
.note { background: #fff4ee; padding: 10px 12px; margin: 0 0 12px; }
footer { margin-top: 8px; color: #3d514e; font-size: 13px; }
footer a { color: #0e3d3b; }
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: relative; height: auto; }
  .hero, .split, .news { grid-template-columns: 1fr; }
  .content { padding: 16px; }
}