:root {
  --paper: #f3ead6;
  --paper-light: #fbf7ec;
  --ink: #17252a;
  --muted: #66706a;
  --line: #c7b99d;
  --jade: #0d6157;
  --jade-dark: #063c37;
  --cinnabar: #b8452d;
  --shadow: rgba(47, 41, 29, 0.14);
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
  color: var(--ink);
  background: var(--paper);
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(rgba(102, 81, 41, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 81, 41, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 32px 32px;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  background: radial-gradient(circle at 78% 12%, rgba(13, 97, 87, 0.1), transparent 34%);
}

a {
  color: var(--jade);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--cinnabar);
}

:focus-visible {
  outline: 3px solid var(--cinnabar);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10;
  padding: 10px 16px;
  color: #fff;
  background: var(--ink);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 92px;
  padding: 18px clamp(24px, 6vw, 88px);
  border-bottom: 1px solid var(--line);
  background: rgba(251, 247, 236, 0.78);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  gap: 14px;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  color: var(--paper-light);
  background: var(--jade-dark);
  border-radius: 50% 48% 46% 52%;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.22), 0 8px 24px var(--shadow);
  font-size: 24px;
  font-weight: 700;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 22px;
  letter-spacing: 0.14em;
}

.brand small,
.document-stamp {
  margin: 4px 0 0;
  color: var(--muted);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.document-stamp span {
  color: var(--cinnabar);
  font-weight: 700;
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 940px);
  gap: clamp(34px, 6vw, 92px);
  align-items: start;
  width: min(1380px, calc(100% - 48px));
  margin: 0 auto;
  padding: 64px 0 100px;
}

.toc {
  position: sticky;
  top: 28px;
  padding: 28px;
  border: 1px solid var(--line);
  background: rgba(251, 247, 236, 0.62);
  box-shadow: 12px 12px 0 rgba(184, 69, 45, 0.07);
}

.toc-label,
.eyebrow,
.card-kicker {
  color: var(--cinnabar);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.toc nav {
  display: grid;
  margin-top: 22px;
}

.toc nav a {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 8px;
  padding: 11px 0;
  border-bottom: 1px dotted var(--line);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
}

.toc nav a span {
  color: var(--cinnabar);
  font-family: "Avenir Next", sans-serif;
  font-size: 10px;
  font-weight: 700;
}

.toc-note {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 3px double var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.toc-note strong,
.toc-note time {
  display: block;
  color: var(--ink);
}

.toc-note time {
  margin-top: 3px;
  font-family: "Avenir Next", sans-serif;
  letter-spacing: 0.08em;
}

.policy {
  min-width: 0;
}

.hero {
  position: relative;
  padding: 22px 0 62px;
  border-bottom: 4px double var(--ink);
}

.hero::after {
  position: absolute;
  right: 6px;
  bottom: 28px;
  display: grid;
  width: 82px;
  height: 82px;
  content: "隐\A 私";
  white-space: pre;
  place-items: center;
  color: var(--cinnabar);
  border: 3px solid var(--cinnabar);
  opacity: 0.62;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  transform: rotate(-7deg);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 24px;
  font-size: clamp(58px, 10vw, 112px);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 0.94;
}

.lede {
  max-width: 720px;
  margin-bottom: 28px;
  font-size: clamp(18px, 2.3vw, 25px);
  line-height: 1.8;
}

.assurance-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 700px;
}

.assurance-strip span {
  padding: 7px 12px;
  color: var(--paper-light);
  background: var(--jade-dark);
  border-radius: 999px;
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-size: 12px;
}

.updated {
  margin: 26px 0 0;
  color: var(--muted);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-size: 12px;
}

section {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 28px;
  padding: 58px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 28px;
}

.section-number {
  padding-top: 7px;
  color: var(--cinnabar);
  font-family: "Avenir Next", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 500;
  letter-spacing: -0.035em;
}

h3 {
  font-size: 19px;
}

.section-body > p,
.section-body > ul {
  max-width: 780px;
  font-size: 16px;
  line-height: 1.9;
}

li + li {
  margin-top: 10px;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.data-grid article {
  position: relative;
  min-height: 210px;
  padding: 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-light);
  box-shadow: 6px 6px 0 rgba(13, 97, 87, 0.06);
}

.data-grid article:nth-child(2),
.data-grid article:nth-child(3) {
  background: #ece2cc;
}

.data-grid article::after {
  position: absolute;
  right: -18px;
  bottom: -32px;
  width: 92px;
  height: 92px;
  content: "";
  border: 1px solid rgba(13, 97, 87, 0.18);
  border-radius: 50%;
}

.data-grid p:last-child {
  margin-bottom: 0;
  color: #47544f;
  font-size: 14px;
  line-height: 1.75;
}

.note {
  padding: 18px 22px;
  border-left: 4px solid var(--jade);
  background: rgba(13, 97, 87, 0.07);
}

.check-list {
  padding-left: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 34px;
}

.check-list li::before {
  position: absolute;
  top: 0.1em;
  left: 0;
  color: var(--jade);
  content: "◆";
  font-size: 13px;
}

.contact-link {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  margin-top: 12px;
  padding: 13px 18px;
  color: var(--paper-light);
  background: var(--jade-dark);
  text-decoration: none;
}

.contact-link:hover {
  color: #fff;
  background: var(--cinnabar);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  padding: 32px 0;
  color: var(--muted);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-size: 12px;
}

@media (max-width: 900px) {
  .page-shell {
    grid-template-columns: 1fr;
    width: min(760px, calc(100% - 36px));
    padding-top: 32px;
  }

  .toc {
    position: static;
  }

  .toc nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
  }
}

@media (max-width: 620px) {
  .masthead {
    align-items: flex-start;
    padding: 16px 18px;
  }

  .document-stamp {
    max-width: 110px;
    text-align: right;
  }

  .brand small {
    display: none;
  }

  .toc {
    display: none;
  }

  .toc nav,
  .data-grid {
    grid-template-columns: 1fr;
  }

  .hero::after {
    display: none;
  }

  h1 {
    font-size: 64px;
  }

  section {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 42px 0;
  }

  footer {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  :root,
  body {
    background: #fff;
  }

  .masthead,
  .toc,
  .skip-link,
  .contact-link {
    display: none;
  }

  .page-shell {
    display: block;
    width: auto;
    padding: 0;
  }

  .policy {
    color: #000;
  }

  section,
  .hero {
    break-inside: avoid;
  }

  a {
    color: inherit;
  }
}