:root {
  --ink: #203449;
  --muted: #63747c;
  --forest: #193634;
  --forest-soft: #2d5550;
  --paper: #f7f8f4;
  --white: #fff;
  --line: rgba(38, 68, 72, .16);
  --pink: #cf718e;
  --yellow: #f0c95f;
  --blue: #6e91b8;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}
a { color: inherit; }
button, a { font: inherit; }
img { max-width: 100%; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 8px 12px;
  background: #fff;
  color: var(--ink);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  background: rgba(25, 54, 52, .94);
  color: #fff;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.header-inner {
  width: min(1120px, calc(100% - 40px));
  min-height: 70px;
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 0 auto;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}
.brand img {
  width: 38px;
  height: 38px;
  display: block;
  border: 1px solid rgba(255, 255, 255, .62);
  border-radius: 8px;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
  font-size: 12px;
}
.header-nav a {
  color: rgba(255, 255, 255, .76);
  text-decoration: none;
}
.header-nav a:hover,
.header-nav a:focus-visible,
.header-nav a[aria-current="page"] { color: #fff; }

.page-hero {
  position: relative;
  min-height: 350px;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
  background-image: linear-gradient(90deg, rgba(23, 50, 48, .9), rgba(31, 64, 62, .34)), url("prototype-assets/flower-sea-hero.png");
  background-position: 50% 50%;
  background-size: cover;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 88px;
  background: linear-gradient(180deg, rgba(247, 248, 244, 0), var(--paper));
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 78px 0 84px;
}
.hero-kicker {
  margin: 0 0 12px;
  color: rgba(255, 255, 255, .72);
  font-size: 11px;
  font-weight: 700;
}
.page-hero h1 {
  margin: 0;
  font-family: "Songti SC", STSong, serif;
  font-size: 54px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0;
}
.hero-lead {
  max-width: 660px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, .84);
  font-size: 14px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 22px;
  color: rgba(255, 255, 255, .72);
  font-size: 11px;
}

.content-shell {
  width: min(1120px, calc(100% - 40px));
  display: grid;
  grid-template-columns: 210px minmax(0, 760px);
  justify-content: space-between;
  gap: 72px;
  margin: 0 auto;
  padding: 62px 0 92px;
}
.contents-nav {
  position: sticky;
  top: 104px;
  align-self: start;
  padding-top: 6px;
}
.contents-nav strong {
  display: block;
  margin-bottom: 13px;
  color: var(--forest);
  font-size: 12px;
}
.contents-nav a {
  display: block;
  padding: 7px 0;
  color: #718087;
  font-size: 12px;
  text-decoration: none;
}
.contents-nav a:hover,
.contents-nav a:focus-visible { color: var(--pink); }

.document { min-width: 0; }
.document section {
  padding: 0 0 46px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 46px;
}
.document section:last-child { margin-bottom: 0; }
.document h2 {
  margin: 0 0 18px;
  color: var(--forest);
  font-family: "Songti SC", STSong, serif;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0;
}
.document h3 {
  margin: 30px 0 10px;
  color: #38555a;
  font-size: 16px;
}
.document p { margin: 0 0 15px; color: #53666e; font-size: 14px; }
.document ul,
.document ol { margin: 10px 0 0; padding-left: 22px; color: #53666e; font-size: 14px; }
.document li + li { margin-top: 8px; }
.document a { color: #356b73; text-underline-offset: 3px; }
.document strong { color: #304d53; }

.summary-note {
  margin: 0 0 44px;
  padding: 22px 24px;
  border-left: 3px solid var(--pink);
  background: #fff;
  box-shadow: 0 14px 36px rgba(35, 61, 63, .07);
}
.summary-note strong { display: block; margin-bottom: 6px; }
.summary-note p { margin: 0; }

.data-table-wrap { overflow-x: auto; margin: 22px 0; }
.data-table {
  width: 100%;
  min-width: 650px;
  border-collapse: collapse;
  background: rgba(255, 255, 255, .54);
  font-size: 12px;
}
.data-table th,
.data-table td {
  padding: 14px 15px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.data-table th { color: var(--forest); background: rgba(56, 88, 87, .07); }
.data-table td { color: #596b72; }

.service-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
  margin-top: 22px;
}
.service-item {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}
.service-item strong { display: block; margin-bottom: 4px; font-size: 14px; }
.service-item span { color: #65777e; font-size: 12px; line-height: 1.7; }

.support-strip {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
  margin: 4px 0 46px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.support-strip h2 { margin-bottom: 7px; }
.support-strip p { margin: 0; }
.primary-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--forest-soft);
  border-radius: 999px;
  background: var(--forest);
  color: #fff !important;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}
.primary-link:hover,
.primary-link:focus-visible { background: var(--forest-soft); }

.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary {
  position: relative;
  padding: 20px 40px 20px 0;
  color: #304d53;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  top: 17px;
  right: 4px;
  color: var(--pink);
  font-size: 21px;
  font-weight: 400;
}
.faq-list details[open] summary::after { content: "−"; }
.faq-answer { padding: 0 36px 20px 0; }
.faq-answer p,
.faq-answer ol { margin-bottom: 0; }

.issue-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}
.issue-card {
  min-height: 154px;
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, .62);
}
.issue-card i {
  width: 24px;
  height: 4px;
  display: block;
  margin-bottom: 16px;
  border-radius: 2px;
  background: var(--pink);
}
.issue-card:nth-child(2) i { background: var(--yellow); }
.issue-card:nth-child(3) i { background: var(--blue); }
.issue-card strong { display: block; margin-bottom: 6px; font-size: 14px; }
.issue-card span { color: #687981; font-size: 12px; }

.site-footer {
  padding: 28px 0;
  background: var(--forest);
  color: rgba(255, 255, 255, .68);
  font-size: 11px;
}
.footer-inner {
  width: min(1120px, calc(100% - 40px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px 28px;
  margin: 0 auto;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 22px; }
.site-footer a { color: rgba(255, 255, 255, .82); text-decoration: none; }
.site-footer a:hover,
.site-footer a:focus-visible { color: #fff; }

:focus-visible { outline: 2px solid #f3bbcf; outline-offset: 3px; }

@media (max-width: 820px) {
  .content-shell { grid-template-columns: 1fr; gap: 30px; }
  .contents-nav { position: static; display: flex; flex-wrap: wrap; gap: 4px 18px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
  .contents-nav strong { width: 100%; margin-bottom: 4px; }
  .contents-nav a { padding: 3px 0; }
  .issue-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  html { scroll-padding-top: 76px; }
  .header-inner { width: min(100% - 28px, 520px); min-height: 62px; }
  .brand img { width: 34px; height: 34px; }
  .header-nav { gap: 14px; }
  .header-nav a:first-child { display: none; }
  .page-hero { min-height: 310px; background-position: 54% 50%; }
  .hero-inner { width: min(100% - 32px, 520px); padding: 62px 0 72px; }
  .page-hero h1 { font-size: 40px; }
  .hero-lead { font-size: 13px; }
  .content-shell { width: min(100% - 32px, 520px); padding: 42px 0 68px; }
  .document section { padding-bottom: 34px; margin-bottom: 34px; }
  .document h2 { font-size: 25px; }
  .summary-note { padding: 18px; margin-bottom: 34px; }
  .service-list { grid-template-columns: 1fr; }
  .support-strip { grid-template-columns: 1fr; }
  .primary-link { width: 100%; }
  .footer-inner { width: min(100% - 32px, 520px); align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; }
}