:root {
  color: #17211d;
  background: #f4f6f5;
  font-family: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: #f4f6f5;
}

a {
  color: #176b5a;
}

.public-header {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 28px;
  color: #eef7f3;
  background: #132d27;
  border-bottom: 1px solid #29483f;
}

.public-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
  font-size: 17px;
  font-weight: 800;
  text-decoration: none;
}

.public-brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: #132d27;
  background: #f1c75b;
  border-radius: 6px;
}

.public-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.public-nav a {
  color: #d7e6e0;
  font-size: 14px;
  text-decoration: none;
}

.public-nav a[aria-current="page"],
.public-nav a:hover {
  color: #ffffff;
}

.article-heading {
  color: #ffffff;
  background: #1c4d40;
  border-bottom: 4px solid #efc456;
}

.article-heading-inner {
  width: min(100% - 40px, 960px);
  margin: 0 auto;
  padding: 52px 0 46px;
}

.breadcrumb {
  margin: 0 0 14px;
  color: #c8ddd5;
  font-size: 13px;
}

.breadcrumb a {
  color: #e6f1ed;
}

.article-heading h1 {
  max-width: 820px;
  margin: 0;
  font-size: 42px;
  line-height: 1.18;
  letter-spacing: 0;
}

.article-heading p {
  max-width: 760px;
  margin: 18px 0 0;
  color: #e3efea;
  font-size: 17px;
  line-height: 1.8;
}

.article-layout {
  width: min(100% - 40px, 960px);
  margin: 0 auto;
  padding: 24px 0 64px;
}

.article-section {
  padding: 34px 0;
  border-bottom: 1px solid #d9dfdc;
}

.article-section:last-child {
  border-bottom: 0;
}

.article-section h2 {
  margin: 0 0 16px;
  color: #172b25;
  font-size: 27px;
  line-height: 1.3;
  letter-spacing: 0;
}

.article-section h3 {
  margin: 24px 0 8px;
  color: #253a33;
  font-size: 18px;
  letter-spacing: 0;
}

.article-section p,
.article-section li,
.article-section dd {
  color: #46534e;
  font-size: 16px;
  line-height: 1.85;
}

.article-section p {
  margin: 10px 0;
}

.article-section ul,
.article-section ol {
  margin: 12px 0;
  padding-left: 24px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature-item {
  min-height: 150px;
  padding: 20px;
  background: #ffffff;
  border: 1px solid #d7dfdc;
  border-radius: 8px;
}

.feature-item strong {
  display: block;
  margin-bottom: 8px;
  color: #1b342c;
  font-size: 18px;
}

.feature-item p {
  margin: 0;
  font-size: 14px;
}

.step-list {
  counter-reset: guide-step;
  display: grid;
  gap: 16px;
  padding: 0;
  list-style: none;
}

.step-list li {
  counter-increment: guide-step;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.step-list li::before {
  content: counter(guide-step);
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: #ffffff;
  background: #236b5b;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 800;
}

.seo-note {
  padding: 16px 18px;
  color: #5b4310;
  background: #fff7dd;
  border-left: 4px solid #d89c1d;
}

.seo-note p {
  color: inherit;
  margin: 0;
}

.board-figure {
  margin: 26px 0 8px;
}

.guide-board {
  width: min(100%, 620px);
  aspect-ratio: 1;
  table-layout: fixed;
  border-collapse: collapse;
  background: #17634f;
  border: 10px solid #123f35;
  box-shadow: 0 18px 42px rgba(17, 47, 39, 0.18);
}

.guide-board td {
  position: relative;
  width: 12.5%;
  height: 12.5%;
  padding: 0;
  text-align: center;
  border: 1px solid #0d392f;
}

.guide-board .black::after,
.guide-board .white::after {
  content: "";
  position: absolute;
  inset: 14%;
  border-radius: 50%;
}

.guide-board .black::after {
  background: #111715;
  box-shadow: inset -5px -7px 10px rgba(0, 0, 0, 0.45);
}

.guide-board .white::after {
  background: #f2f5f3;
  border: 1px solid #d1dad6;
  box-shadow: inset -5px -7px 10px rgba(112, 129, 122, 0.25);
}

.guide-board .treasure::before {
  content: "宝";
  position: absolute;
  z-index: 2;
  top: 5px;
  right: 5px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  color: #5f3d08;
  background: #f1c650;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 900;
}

.guide-board .recommended {
  box-shadow: inset 0 0 0 4px #ffd65f;
}

.guide-board .recommended span {
  position: relative;
  z-index: 3;
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #2e2b17;
  background: #ffe58d;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 900;
}

.board-figure figcaption {
  margin-top: 12px;
  color: #65716c;
  font-size: 13px;
  line-height: 1.6;
}

.coordinate-table {
  width: 100%;
  margin-top: 16px;
  border-collapse: collapse;
  background: #ffffff;
}

.coordinate-table th,
.coordinate-table td {
  padding: 12px 14px;
  text-align: left;
  border: 1px solid #d7dfdc;
}

.coordinate-table th {
  color: #22382f;
  background: #e9f0ed;
}

.faq-list {
  margin: 0;
}

.faq-list div {
  padding: 20px 0;
  border-bottom: 1px solid #d9dfdc;
}

.faq-list div:last-child {
  border-bottom: 0;
}

.faq-list dt {
  color: #20352d;
  font-size: 18px;
  font-weight: 800;
}

.faq-list dd {
  margin: 8px 0 0;
}

.public-cta {
  margin-top: 34px;
  padding: 28px;
  color: #ffffff;
  background: #223f57;
  border-radius: 8px;
}

.public-cta h2 {
  color: #ffffff;
}

.public-cta p {
  color: #dce8f0;
}

.public-cta a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  margin-top: 10px;
  padding: 0 18px;
  color: #14212a;
  background: #f2c65a;
  border-radius: 6px;
  font-weight: 800;
  text-decoration: none;
}

.public-footer {
  padding: 22px 20px;
  color: #73807b;
  background: #e7ebe9;
  border-top: 1px solid #d2d9d6;
  text-align: center;
  font-size: 12px;
  line-height: 1.8;
}

.public-footer a {
  color: #52615b;
  text-decoration: none;
}

@media (max-width: 720px) {
  .public-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 14px 20px;
  }

  .public-nav {
    width: 100%;
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .public-nav a {
    flex: 0 0 auto;
  }

  .article-heading-inner,
  .article-layout {
    width: min(100% - 28px, 960px);
  }

  .article-heading-inner {
    padding: 38px 0 34px;
  }

  .article-heading h1 {
    font-size: 32px;
  }

  .article-heading p {
    font-size: 15px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .guide-board {
    border-width: 6px;
  }

  .guide-board .treasure::before {
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    font-size: 10px;
  }

  .guide-board .recommended span {
    width: 34px;
    height: 34px;
    font-size: 10px;
  }

  .coordinate-table {
    font-size: 13px;
  }
}