:root {
  --paper: #fafaf8;
  --paper-soft: #f3f1eb;
  --paper-elev: #fffdf9;
  --ink: #241f1a;
  --ink-soft: #51483f;
  --muted: #766f67;
  --line: #ded8cf;
  --line-soft: rgba(91, 77, 64, 0.13);
  --green: #1f6a4e;
  --green-deep: #0e4635;
  --green-soft: #e7f0e9;
  --green-wash: rgba(31, 106, 78, 0.07);
  --accent: var(--green);
  --accent-deep: var(--green-deep);
  --accent-soft: #e6efe9;
  --accent-bright: #69a985;
  --seal: #8f3830;
  --warm: #9a6a45;
  --warm-soft: #f4eadc;
  --danger: #9a453d;
  --shadow: 0 20px 55px rgba(58, 45, 34, 0.1);
  --shell: 1180px;
  --nav-shell: 1280px;
  --nav-pad: 24px;
  --reading: 760px;
  --pad: 28px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 98px;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(180deg, rgba(244, 242, 236, 0.72) 0, rgba(250, 250, 248, 0) 420px),
    var(--paper);
  color: var(--ink);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
select {
  font: inherit;
}

a:focus-visible,
button:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(31, 106, 78, 0.24);
  outline-offset: 3px;
}

.scroll-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 200;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright));
  box-shadow: 0 0 8px rgba(31, 106, 78, 0.4);
  transition: width 0.1s linear;
}

@keyframes float-in-down {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.42; }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--line);
  background: rgba(250, 250, 248, 0.86);
  backdrop-filter: blur(18px);
  line-height: normal;
  animation: float-in-down 0.6s var(--ease-out);
}

.nav-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  max-width: var(--nav-shell);
  margin: 0 auto;
  padding: 14px var(--nav-pad);
  gap: 24px;
}

.brand {
  grid-column: 1;
  display: inline-flex;
  align-items: center;
  justify-self: start;
  width: max-content;
  min-width: 0;
  gap: 12px;
}

.brand > span:last-child {
  min-width: 0;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  position: relative;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 28%, rgba(255, 255, 255, 0.18), transparent 55%),
    var(--accent-deep);
  color: #f5f4ef;
  font-family: "Noto Serif SC", serif;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.06em;
  box-shadow:
    inset 0 0 0 1.5px rgba(255, 255, 255, 0.12),
    0 2px 8px rgba(14, 70, 53, 0.18);
  transition: transform 0.4s var(--ease-out);
}

.brand:hover .brand-mark {
  transform: rotate(-8deg) scale(1.05);
}

.brand-mark::after {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--seal);
  box-shadow: 0 0 0 2px var(--paper);
  content: "";
  animation: pulse-soft 2.4s infinite;
}

.brand-title {
  font-family: "Noto Serif SC", serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.brand-note {
  margin-top: 1px;
  color: var(--muted);
  font-family: "Inter", sans-serif;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-mid {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-self: center;
  justify-content: center;
  gap: 2px;
  color: var(--ink-soft);
  font-size: 14px;
}

.nav-mid a {
  padding: 7px 14px;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
}

.nav-mid a:hover,
.nav-mid a:focus-visible {
  background: var(--accent-soft);
  color: var(--accent);
}

.nav-end {
  grid-column: 3;
  display: flex;
  align-items: center;
  justify-self: end;
  justify-content: flex-end;
  gap: 10px;
}

.nav-cta {
  position: relative;
  overflow: hidden;
  padding: 9px 16px;
  border-radius: 6px;
  background: var(--accent);
  color: #fff !important;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(31, 106, 78, 0.2);
  transition: all 0.2s var(--ease-out);
}

.nav-cta::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  background-position: -200% 0;
  background-size: 200% 100%;
  content: "";
  transition: background-position 0.6s var(--ease-out);
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(31, 106, 78, 0.3);
}

.nav-cta:hover::before {
  animation: shimmer 1.2s;
}

.legal-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
}

.legal-hero::before {
  position: absolute;
  top: -150px;
  right: -80px;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 106, 78, 0.13), rgba(31, 106, 78, 0) 70%);
  content: "";
  pointer-events: none;
}

.legal-hero-shell {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(330px, 0.65fr);
  max-width: var(--shell);
  margin: 0 auto;
  padding: 62px var(--pad) 58px;
  gap: 54px;
}

.legal-switch {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 28px;
  padding: 4px;
  border: 1px solid rgba(31, 106, 78, 0.14);
  border-radius: 999px;
  background: rgba(255, 253, 249, 0.72);
  box-shadow: 0 8px 26px rgba(49, 40, 32, 0.06);
}

.legal-switch a {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  padding: 0 16px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  transition: background 0.16s ease, color 0.16s ease;
}

.legal-switch a:hover,
.legal-switch a:focus-visible {
  color: var(--green-deep);
}

.legal-switch a[aria-current="page"] {
  background: var(--green);
  color: #fff;
  box-shadow: 0 6px 14px rgba(31, 106, 78, 0.16);
}

.eyebrow {
  display: block;
  margin-bottom: 12px;
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.legal-hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(42px, 5.4vw, 68px);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.06;
}

.legal-hero h1 .serif {
  color: var(--green);
}

.legal-lead {
  max-width: 720px;
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.8;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  margin-top: 24px;
  gap: 8px;
}

.hero-meta span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 0 11px;
  border: 1px solid rgba(31, 106, 78, 0.12);
  border-radius: 999px;
  background: rgba(255, 253, 249, 0.7);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.summary-panel {
  align-self: end;
  padding: 24px;
  border: 1px solid rgba(31, 106, 78, 0.16);
  border-radius: 22px;
  background: rgba(255, 253, 249, 0.88);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.summary-panel h2 {
  margin: 0 0 8px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 19px;
}

.summary-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  padding: 13px 0;
  border-top: 1px solid var(--line-soft);
  gap: 13px;
}

.summary-row strong {
  color: var(--green-deep);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.summary-row span {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

.legal-main {
  padding: 54px var(--pad) 88px;
}

.legal-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  align-items: start;
  max-width: 1080px;
  margin: 0 auto;
  gap: 54px;
}

.toc {
  position: sticky;
  top: 95px;
  display: grid;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.toc-title {
  margin-bottom: 10px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.toc a {
  position: relative;
  padding: 7px 10px 7px 16px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.35;
  transition: background 0.15s ease, color 0.15s ease;
}

.toc a::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--line);
  content: "";
  transform: translateY(-50%);
}

.toc a:hover,
.toc a.is-current {
  background: var(--green-wash);
  color: var(--green-deep);
}

.toc a.is-current::before {
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(31, 106, 78, 0.09);
}

.mobile-section-picker {
  display: none;
}

.legal-document {
  min-width: 0;
  padding: 0 48px;
  border: 1px solid rgba(93, 77, 63, 0.12);
  border-radius: 24px;
  background: rgba(255, 253, 249, 0.78);
  box-shadow: 0 18px 52px rgba(55, 42, 31, 0.06);
}

.legal-section {
  padding: 40px 0 42px;
  border-bottom: 1px solid var(--line-soft);
}

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

.legal-section.is-note {
  margin: 34px -16px 0;
  padding: 28px 30px 30px;
  border: 1px solid rgba(31, 106, 78, 0.18);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(31, 106, 78, 0.08), rgba(255, 253, 249, 0.86)),
    var(--paper-elev);
}

.legal-section-head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: baseline;
  margin-bottom: 18px;
  gap: 12px;
}

.legal-num {
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.legal-section h2 {
  margin: 0;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 25px;
  line-height: 1.35;
}

.legal-section p {
  max-width: var(--reading);
  margin: 0;
  color: var(--ink-soft);
}

.legal-section p + p {
  margin-top: 15px;
}

.legal-section p a,
.legal-list a {
  color: var(--green-deep);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-color: rgba(31, 106, 78, 0.3);
  text-underline-offset: 3px;
}

.legal-list {
  max-width: var(--reading);
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.legal-list li {
  position: relative;
  padding-left: 22px;
  color: var(--ink-soft);
}

.legal-list li + li {
  margin-top: 11px;
}

.legal-list li::before {
  position: absolute;
  top: 0.7em;
  left: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  content: "";
}

.legal-split,
.privacy-grid,
.data-flow {
  display: grid;
  margin-top: 22px;
  gap: 12px;
}

.legal-split {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.privacy-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.data-flow {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-block,
.privacy-block,
.flow-step {
  display: grid;
  align-content: start;
  min-height: 116px;
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.54);
  gap: 7px;
}

.mini-block strong,
.privacy-block strong,
.flow-step strong {
  color: var(--green-deep);
  font-size: 14px;
}

.mini-block span,
.privacy-block span,
.flow-step span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.flow-step .mono {
  color: var(--warm);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.legal-cta {
  display: flex;
  flex-wrap: wrap;
  margin-top: 24px;
  gap: 10px;
}

.btn,
.link-button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper-elev);
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  transition: border-color 0.16s ease, background 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.btn:hover,
.link-button:hover {
  border-color: rgba(31, 106, 78, 0.28);
  background: var(--green-soft);
  color: var(--green-deep);
  transform: translateY(-1px);
}

.btn-primary {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
}

.btn-primary:hover {
  border-color: var(--green-deep);
  background: var(--green-deep);
  color: #fff;
}

.site-footer {
  padding: 38px var(--pad);
  border-top: 1px solid var(--line);
  background: var(--paper);
  color: var(--muted);
  font-size: 12px;
}

.footer-shell {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto auto;
  align-items: center;
  max-width: var(--shell);
  margin: 0 auto;
  gap: 20px 28px;
}

.footer-brand {
  display: flex;
  min-width: 0;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
}

.footer-brand-name {
  color: var(--ink);
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 14px;
}

.footer-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a,
.cw-community-footer-trigger {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
}

.footer-links a:hover,
.cw-community-footer-trigger:hover {
  color: var(--green);
}

.footer-status {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

@media (max-width: 1000px) {
  .nav-shell {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
  }

  .nav-mid {
    display: none;
  }

  .brand-note {
    display: none;
  }

  .nav-end {
    grid-column: 2;
  }

  .legal-hero-shell {
    grid-template-columns: 1fr;
    padding-top: 48px;
    gap: 32px;
  }

  .summary-panel {
    max-width: 720px;
  }

  .legal-layout {
    grid-template-columns: 1fr;
    max-width: 850px;
    gap: 20px;
  }

  .toc {
    display: none;
  }

  .mobile-section-picker {
    position: sticky;
    top: 78px;
    z-index: 60;
    display: grid;
    padding: 10px;
    border: 1px solid rgba(31, 106, 78, 0.14);
    border-radius: 14px;
    background: rgba(250, 250, 248, 0.94);
    box-shadow: 0 10px 30px rgba(51, 42, 33, 0.08);
    backdrop-filter: blur(14px);
  }

  .mobile-section-picker select {
    width: 100%;
    min-height: 42px;
    padding: 0 38px 0 12px;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: var(--paper-elev);
    color: var(--ink-soft);
    font-weight: 750;
  }

  .footer-shell {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 720px) {
  :root {
    --pad: 18px;
  }

  .legal-hero-shell {
    padding-top: 38px;
    padding-bottom: 42px;
  }

  .legal-switch {
    margin-bottom: 22px;
  }

  .legal-switch a {
    padding: 0 13px;
    font-size: 12px;
  }

  .legal-hero h1 {
    font-size: clamp(38px, 12vw, 52px);
  }

  .legal-lead {
    font-size: 15px;
  }

  .summary-panel {
    padding: 20px;
    border-radius: 18px;
  }

  .summary-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .legal-main {
    padding-top: 30px;
    padding-bottom: 56px;
  }

  .mobile-section-picker {
    top: 74px;
  }

  .legal-document {
    padding: 0 22px;
    border-radius: 18px;
  }

  .legal-section {
    padding: 32px 0 34px;
  }

  .legal-section.is-note {
    margin: 22px -8px 0;
    padding: 24px 20px;
  }

  .legal-section-head {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .legal-section h2 {
    font-size: 22px;
  }

  .legal-split,
  .privacy-grid,
  .data-flow {
    grid-template-columns: 1fr;
  }

  .footer-links {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .footer-status {
    white-space: normal;
  }
}

@media (max-width: 520px) {
  :root {
    --pad: 20px;
  }

  html,
  body {
    max-width: 100%;
    overflow-x: hidden;
  }

  .site-header,
  .nav-shell {
    max-width: 100vw;
  }

  .nav-shell {
    width: 100%;
    padding: 12px 16px;
    gap: 18px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
  }

  .brand-title {
    font-size: 17px;
  }

  .nav-end {
    min-width: 0;
    margin-left: 0;
    flex: 0 0 auto;
  }

  .nav-cta {
    display: inline-flex;
    width: 64px;
    max-width: 64px;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 8px 0;
    font-size: 0;
  }

  .nav-cta::after {
    position: relative;
    z-index: 1;
    content: "工作台";
    font-size: 13px;
    line-height: 1;
  }
}

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

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

@media print {
  body {
    background: #fff;
    color: #000;
    font-size: 11pt;
  }

  .scroll-progress,
  .site-header,
  .legal-switch,
  .toc,
  .mobile-section-picker,
  .legal-cta,
  .site-footer {
    display: none !important;
  }

  .legal-hero-shell,
  .legal-layout {
    display: block;
    max-width: none;
    padding: 0;
  }

  .legal-hero {
    padding: 0 0 18pt;
    border-bottom: 1px solid #bbb;
  }

  .legal-hero::before,
  .summary-panel {
    display: none;
  }

  .legal-main {
    padding: 0;
  }

  .legal-document {
    padding: 0;
    border: 0;
    background: #fff;
    box-shadow: none;
  }

  .legal-section,
  .legal-section.is-note {
    margin: 0;
    padding: 18pt 0;
    border: 0;
    border-bottom: 1px solid #ddd;
    border-radius: 0;
    background: #fff;
    break-inside: avoid;
  }
}