:root {
  --cyan: #10c4ca;
  --cyan-dark: #08777d;
  --bg: #f7f8f5;
  --paper: #ffffff;
  --ink: #151815;
  --muted: #626b61;
  --line: #d9ded6;
  --soft: #edf1ea;
  --deep: #1f3029;
  --rust: #a94f3d;
  --rust-soft: #f0ddd5;
  --shadow: 0 18px 50px rgba(22, 29, 23, 0.08);
  --radius: 8px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: radial-gradient(circle at top left, rgba(16, 196, 202, 0.1), transparent 28rem), var(--bg);
  color: var(--ink);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

img {
  display: block;
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 14px 20px;
  background: rgba(247, 248, 245, 0.98);
  border-bottom: 1px solid rgba(217, 222, 214, 0.82);
  transition: box-shadow 180ms ease, background 180ms ease;
}

.site-header.is-elevated {
  background: rgba(255, 255, 255, 0.99);
  box-shadow: 0 10px 30px rgba(22, 29, 23, 0.08);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  font-weight: 720;
  letter-spacing: 0;
}

.brand strong {
  color: var(--muted);
  font-weight: 560;
}

.site-nav {
  display: none;
}

.site-nav a,
.language-switcher a {
  color: var(--muted);
  font-size: 14px;
  transition: color 160ms ease, background 160ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"],
.language-switcher a:hover {
  color: var(--ink);
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
}

.language-switcher a {
  padding: 5px 8px;
  border-radius: 999px;
}

.language-switcher a[aria-current="page"] {
  background: var(--ink);
  color: var(--paper);
}

.site-nav .nav-action {
  color: var(--paper);
  background: var(--ink);
  border-radius: 999px;
  padding: 9px 14px;
}

.menu-button {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  gap: 4px;
}

.menu-button span:not(.sr-only) {
  display: block;
  height: 1px;
  background: var(--ink);
}

.site-nav.is-open {
  position: fixed;
  inset: 68px 12px auto;
  display: grid;
  gap: 6px;
  max-height: calc(100svh - 86px);
  overflow: auto;
  padding: 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.site-nav.is-open a {
  padding: 12px;
  border-radius: var(--radius);
}

.site-nav.is-open .language-switcher {
  justify-self: start;
  margin: 8px 0;
}

.section-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  gap: 24px;
  padding: 36px 0 30px;
  align-items: center;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--rust);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 860px;
  margin-bottom: 18px;
  font-size: 38px;
  line-height: 1.08;
  font-weight: 720;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: 28px;
  line-height: 1.18;
  font-weight: 680;
  letter-spacing: 0;
}

h3 {
  font-size: 18px;
  line-height: 1.28;
  font-weight: 660;
  letter-spacing: 0;
}

.hero-text,
.page-hero p,
.operating p,
.contact-aside p,
.commercial-card p,
.visual-layout p,
.section-heading p {
  max-width: 680px;
  color: var(--muted);
}

.hero-text {
  margin-bottom: 24px;
  font-size: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  transition: transform 160ms ease, background 160ms ease, opacity 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:disabled {
  cursor: wait;
  opacity: 0.64;
}

.button.primary {
  background: var(--ink);
  color: var(--paper);
}

.button.secondary {
  border: 1px solid #b9c2b6;
  background: rgba(255, 255, 255, 0.72);
  color: var(--deep);
}

.text-link {
  display: inline-flex;
  width: fit-content;
  margin-top: 10px;
  color: var(--cyan-dark);
  font-weight: 750;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.trust-row span {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--muted);
  font-size: 12px;
}

.hero-visual {
  width: 100%;
  max-width: 560px;
  justify-self: center;
}

.page-hero {
  display: grid;
  gap: 24px;
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  max-width: none;
  margin: 0;
  font-size: 34px;
  line-height: 1.12;
}

.page-hero-copy {
  max-width: 700px;
}

.page-hero-copy strong {
  display: block;
  margin-bottom: 12px;
  font-size: 20px;
  font-weight: 680;
  line-height: 1.4;
}

.page-hero-copy p {
  margin: 0;
  line-height: 1.75;
}

.operating {
  padding: 34px 0 48px;
  border-top: 1px solid var(--line);
}

.operating-layout {
  display: grid;
  gap: 26px;
}

.architecture-list {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.architecture-list div {
  display: grid;
  grid-template-columns: 42px 88px 1fr;
  gap: 12px;
  align-items: start;
  padding: 15px;
  background: rgba(255, 255, 255, 0.78);
}

.architecture-list span,
.capability-row > p,
.method-steps span {
  color: var(--rust);
  font-family: var(--mono);
  font-size: 12px;
}

.architecture-list strong {
  font-size: 14px;
}

.architecture-list p {
  margin: 0;
  color: var(--ink);
  font-size: 14px;
}

.visual-band {
  padding: 54px 0;
  background: #ffffff;
  border-block: 1px solid var(--line);
}

.visual-layout {
  display: grid;
  gap: 30px;
  align-items: center;
}

.log-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.log-list span {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--deep);
  font-size: 13px;
  font-weight: 700;
}

.support-visual {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.home-index,
.home-blog,
.home-panel,
.capability-page,
.scenario-page,
.pricing-page,
.blog-page {
  padding: 52px 0 64px;
}

.blog-overview {
  display: grid;
  gap: 28px;
  padding: 52px 0 20px;
}

.section-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
}

.home-feature-grid,
.home-pricing-grid,
.education-grid {
  display: grid;
  gap: 14px;
}

.home-feature,
.home-price,
.education-grid article {
  display: grid;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
}

.home-feature span,
.home-scenario span {
  color: var(--cyan-dark);
  font-size: 13px;
  font-weight: 760;
}

.home-feature h3,
.home-price h3,
.education-grid h3 {
  margin: 0;
}

.home-feature p,
.home-price p,
.home-scenario p,
.education-grid p,
.faq-list p {
  margin: 0;
  color: var(--muted);
}

.home-scenario-list {
  display: grid;
  gap: 1px;
  border-top: 1px solid var(--line);
}

.home-scenario {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.home-price strong {
  color: var(--rust);
  font-size: 20px;
}

.home-method {
  padding-block: 58px;
  background: var(--deep);
  color: var(--paper);
}

.case-band {
  padding: 64px 0;
  border-block: 1px solid var(--line);
  background: var(--paper);
}

.case-heading {
  display: grid;
  gap: 18px;
  padding-bottom: 28px;
}

.case-heading h2,
.case-heading p {
  margin-bottom: 0;
}

.case-heading > div:last-child > p {
  max-width: 680px;
  color: var(--muted);
}

.case-heading small {
  display: block;
  max-width: 680px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.case-list {
  border-bottom: 1px solid var(--line);
}

.case-row {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.case-row > span {
  color: var(--rust);
  font-family: var(--mono);
  font-size: 12px;
}

.case-row h3,
.case-row p,
.case-row ul {
  margin: 0;
}

.case-row > div p {
  margin-bottom: 6px;
  color: var(--cyan-dark);
  font-size: 12px;
  font-weight: 760;
}

.case-row > p,
.case-row > ul {
  grid-column: 2;
  color: var(--muted);
}

.case-row ul {
  padding-left: 18px;
  font-size: 14px;
}

.case-row li + li {
  margin-top: 5px;
}

.home-method .text-link {
  color: #d2ad9f;
}

.method-copy p {
  color: rgba(255, 255, 255, 0.72);
}

.education-band {
  padding: 56px 0 70px;
}

.education-band .section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

.education-band .education-grid {
  gap: 0;
  border-top: 1px solid var(--line);
}

.education-band .education-grid article {
  gap: 12px;
  padding: 24px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
}

.education-band .education-grid p {
  max-width: 700px;
  line-height: 1.75;
}

.detail-ledger {
  margin-top: 48px;
  border-top: 2px solid var(--deep);
}

.detail-ledger > h3 {
  margin: 0;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  font-size: 21px;
}

.detail-ledger-head {
  display: none;
}

.detail-ledger-row {
  display: grid;
  border-bottom: 1px solid var(--line);
}

.detail-ledger-row p {
  margin: 0;
  padding: 12px 0;
  color: var(--muted);
}

.detail-ledger-row p:first-child {
  padding-bottom: 2px;
  color: var(--deep);
  font-weight: 760;
}

.education-closing {
  max-width: 840px;
  margin: 28px 0 0;
  padding-left: 18px;
  border-left: 3px solid var(--cyan);
  color: var(--deep);
  font-size: 17px;
  line-height: 1.75;
}

.delivery-standard {
  padding: 64px 0;
}

.delivery-standard .section-heading {
  max-width: 860px;
  margin-bottom: 34px;
}

.delivery-standard-list {
  border-top: 2px solid var(--deep);
}

.delivery-standard-list article {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 8px 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.delivery-standard-list span {
  grid-row: 1 / 3;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 12px;
}

.delivery-standard-list h3,
.delivery-standard-list p {
  margin: 0;
}

.delivery-standard-list p {
  color: var(--muted);
  line-height: 1.7;
}

.faq-list {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.faq-list details {
  background: var(--paper);
  padding: 16px 18px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 750;
}

.home-index {
  display: grid;
  gap: 1px;
}

.index-row {
  display: grid;
  gap: 10px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.index-row:last-child {
  border-bottom: 1px solid var(--line);
}

.index-row span {
  color: var(--cyan-dark);
  font-size: 13px;
  font-weight: 760;
}

.index-row strong {
  font-size: 18px;
  line-height: 1.32;
}

.index-row em {
  color: var(--muted);
  font-style: normal;
}

.capability-row {
  display: grid;
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.capability-row:last-child {
  border-bottom: 1px solid var(--line);
}

.capability-row h2 {
  margin: 0;
}

.capability-row span {
  display: block;
  color: var(--muted);
}

.capability-row ul,
.pricing-row ul {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.capability-row li,
.pricing-row li {
  color: var(--deep);
  font-size: 14px;
}

.matrix-band,
.checklist-band,
.method-page {
  padding: 58px 0;
  background: var(--deep);
  color: var(--paper);
}

.matrix-band h2,
.checklist-band h2,
.principles h2 {
  max-width: 720px;
}

.matrix-list {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
}

.matrix-list p {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 18px;
  background: rgba(255, 255, 255, 0.06);
}

.matrix-list span,
.method-steps p,
.principles p {
  color: rgba(255, 255, 255, 0.72);
}

.scenario-page {
  display: grid;
  gap: 1px;
}

.scenario-page article {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.scenario-page article:last-child {
  border-bottom: 1px solid var(--line);
}

.scenario-page span,
.blog-card span {
  color: var(--cyan-dark);
  font-size: 13px;
  font-weight: 760;
}

.scenario-page p,
.blog-card p {
  color: var(--muted);
}

.checklist-band .section-shell {
  display: grid;
  gap: 22px;
}

.checklist-band .section-shell > div {
  display: grid;
  gap: 1px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  overflow: hidden;
}

.checklist-band p {
  margin: 0;
  padding: 18px;
  background: rgba(255, 255, 255, 0.06);
}

.method-shell {
  display: grid;
  gap: 28px;
}

.method-steps {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.12);
  list-style: none;
}

.method-steps li {
  padding: 18px;
  background: rgba(255, 255, 255, 0.05);
}

.method-steps span {
  display: block;
  margin-bottom: 14px;
  color: #d2ad9f;
}

.method-steps strong {
  display: block;
  margin-bottom: 8px;
}

.method-steps p {
  margin: 0;
  font-size: 14px;
}

.principles {
  display: grid;
  gap: 14px;
}

.principles article {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-top: 16px;
}

.principles h3 {
  margin-bottom: 6px;
}

.pricing-page {
  display: grid;
  gap: 1px;
}

.pricing-row {
  display: grid;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.pricing-row:last-child {
  border-bottom: 1px solid var(--line);
}

.pricing-row h2 {
  margin-bottom: 6px;
}

.pricing-row strong {
  color: var(--rust);
}

.pricing-row p {
  color: var(--muted);
}

.commercial {
  padding-bottom: 64px;
}

.commercial-card {
  display: grid;
  gap: 24px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.price-lines {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.price-lines p {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin: 0;
  padding: 14px;
  background: #fbfcfa;
}

.price-lines span {
  color: var(--muted);
}

.price-lines strong {
  color: var(--cyan-dark);
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  white-space: nowrap;
}

.blog-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.blog-featured {
  padding: 24px 0;
  border-top: 2px solid var(--deep);
  border-bottom: 1px solid var(--line);
}

.blog-featured > div {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 13px;
}

.blog-featured > div span {
  color: var(--cyan-dark);
  font-weight: 760;
}

.blog-featured h2 {
  max-width: 760px;
  margin-bottom: 12px;
}

.blog-featured p:not(.eyebrow) {
  max-width: 760px;
  color: var(--muted);
}

.blog-topic-list {
  display: grid;
  align-self: start;
  border-top: 2px solid var(--deep);
}

.blog-topic {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.blog-topic h3,
.blog-topic p {
  margin: 0;
}

.blog-topic p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.blog-list-heading {
  max-width: 720px;
  margin-bottom: 20px;
}

.blog-list-heading h2 {
  margin-bottom: 10px;
}

.blog-list-heading p:last-child {
  margin: 0;
  color: var(--muted);
}

.blog-tools button,
.admin-tabs button,
.admin-lang-tabs button {
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--muted);
}

.blog-tools button.is-active,
.admin-tabs button.is-active,
.admin-lang-tabs button.is-active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.blog-list {
  display: grid;
  gap: 14px;
}

.blog-list.compact {
  padding-bottom: 8px;
}

.blog-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
}

.blog-card > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.blog-card time {
  color: var(--muted);
  font-size: 13px;
}

.blog-card h2 {
  margin-bottom: 10px;
  font-size: 20px;
}

.rich-text {
  margin-top: 12px;
  color: var(--muted);
}

.rich-text p,
.rich-text ul,
.rich-text ol,
.rich-text blockquote {
  margin: 0 0 12px;
}

.contact {
  display: grid;
  gap: 24px;
  padding: 0 0 64px;
}

.contact-aside {
  align-self: start;
  padding-top: 4px;
}

.contact-aside p {
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.contact-form,
.admin-login-form,
.admin-editor,
.admin-contact,
.admin-list {
  display: grid;
  gap: 14px;
  align-self: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.contact-form label,
.admin-login-form label,
.admin-fields label,
.admin-contact form {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.contact-form input,
.contact-form select,
.contact-form textarea,
.admin-login-form input,
.admin-fields input,
.admin-fields select,
.admin-fields textarea,
.admin-contact select,
.admin-contact textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
  color: var(--ink);
  padding: 11px 12px;
  outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus,
.admin-login-form input:focus,
.admin-fields input:focus,
.admin-fields textarea:focus,
.admin-contact select:focus,
.admin-contact textarea:focus,
.blog-body-editor:focus-within {
  border-color: var(--cyan-dark);
  box-shadow: 0 0 0 3px rgba(16, 196, 202, 0.12);
}

.captcha-field {
  display: grid;
  gap: 8px;
}

.captcha-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.captcha-row img {
  width: 150px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--soft);
}

.captcha-refresh {
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--deep);
  font-size: 13px;
  font-weight: 700;
}

.form-status {
  min-height: 22px;
  margin: 0;
  color: var(--muted);
}

.form-status.is-success {
  color: var(--cyan-dark);
}

.form-status.is-error {
  color: var(--rust);
}

.legal-main {
  padding-bottom: 70px;
}

.privacy-hero {
  padding: 58px 0 34px;
}

.privacy-hero h1 {
  font-size: 36px;
}

.privacy-hero p {
  max-width: 760px;
  color: var(--muted);
}

.privacy-hero span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.legal-notice {
  max-width: 820px;
  margin-top: 24px;
  padding: 16px 18px;
  border-left: 3px solid var(--cyan-dark);
  background: var(--soft);
  color: var(--deep);
  font-size: 14px;
  line-height: 1.75;
}

.privacy-content {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.privacy-content article {
  padding: 22px;
  background: var(--paper);
  scroll-margin-top: 96px;
}

.privacy-content h2 {
  margin-top: 8px;
  font-size: 20px;
}

.privacy-content p {
  margin-bottom: 12px;
  color: var(--muted);
  line-height: 1.78;
}

.privacy-content p:last-child {
  margin-bottom: 0;
}

.legal-layout {
  display: grid;
  gap: 18px;
}

.legal-toc {
  display: grid;
  gap: 4px;
  align-self: start;
  max-height: 320px;
  overflow: auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  scrollbar-gutter: stable;
}

.legal-toc strong {
  margin-bottom: 6px;
}

.legal-toc a {
  padding: 8px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.legal-document article span {
  color: var(--rust);
  font-family: var(--mono);
  font-size: 12px;
}

.legal-bullets {
  margin: 14px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.legal-bullets li + li {
  margin-top: 7px;
}

.article-main {
  padding: 72px 0 88px;
}

.article-shell {
  max-width: 820px;
}

.article-shell h1 {
  margin: 0;
  max-width: 820px;
  font-size: 42px;
  line-height: 1.14;
}

.article-header {
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.article-summary {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
}

.article-shell time {
  display: block;
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.article-body {
  padding-top: 32px;
  color: var(--deep);
  font-size: 17px;
  line-height: 1.82;
}

.article-body h2,
.article-body h3 {
  margin-top: 40px;
}

.article-body p {
  margin-bottom: 18px;
}

.article-body ul,
.article-body ol {
  margin: 18px 0 26px;
  padding-left: 24px;
}

.article-body li + li {
  margin-top: 9px;
}

.article-body strong {
  color: var(--ink);
}

.article-note {
  margin: 28px 0 34px;
  padding: 18px 20px;
  border-left: 3px solid var(--cyan-dark);
  background: var(--soft);
}

.article-note > strong {
  display: block;
  margin-bottom: 6px;
}

.article-note p {
  margin: 0;
  color: var(--deep);
}

.article-table-wrap {
  max-width: 100%;
  margin: 26px 0 34px;
  overflow-x: auto;
  border-block: 1px solid var(--line);
}

.article-table-wrap table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.55;
}

.article-table-wrap th,
.article-table-wrap td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.article-table-wrap th {
  background: var(--soft);
  color: var(--ink);
  font-weight: 720;
}

.article-table-wrap tr:last-child td {
  border-bottom: 0;
}

.article-figure {
  margin: 30px 0 36px;
}

.article-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.article-figure figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.article-body a {
  color: var(--cyan-dark);
  font-weight: 700;
}

.admin-main {
  padding: 48px 0 70px;
}

.admin-login {
  max-width: 560px;
}

.admin-topbar {
  display: grid;
  gap: 14px;
  align-items: start;
  margin-bottom: 22px;
}

.admin-tabs,
.admin-lang-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.admin-panel {
  display: none;
}

.admin-panel.is-active {
  display: block;
}

.admin-grid {
  display: grid;
  gap: 18px;
}

.admin-list {
  box-shadow: none;
}

.admin-list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.admin-list-head button,
.admin-list [data-post-list] button {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.admin-list-head button {
  padding: 8px 10px;
}

.admin-list [data-post-list] {
  display: grid;
  gap: 8px;
}

.admin-list [data-post-list] button {
  display: grid;
  gap: 3px;
  width: 100%;
  padding: 10px;
  text-align: left;
}

.admin-list [data-post-list] button.is-active {
  border-color: var(--ink);
  background: var(--soft);
}

.admin-list [data-post-list] span {
  color: var(--muted);
  font-size: 12px;
}

.admin-editor-actions,
.contact-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.admin-fields {
  display: grid;
  gap: 14px;
}

.admin-fields.compact {
  grid-template-columns: 1fr;
}

.admin-fields .check {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
}

.admin-fields .check input {
  width: auto;
}

.blog-body-editor {
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.blog-body-editor .ql-editor {
  min-height: 218px;
  font-size: 15px;
}

.editor-fallback {
  padding: 14px;
}

.admin-contact-list {
  display: grid;
  gap: 14px;
}

.admin-contact {
  box-shadow: none;
}

.admin-contact > div {
  display: grid;
  gap: 2px;
}

.admin-contact span,
.admin-contact time {
  color: var(--muted);
  font-size: 13px;
}

.admin-contact p {
  margin: 0;
  color: var(--ink);
}

.admin-contact dl {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 6px 10px;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.admin-contact dt {
  color: var(--muted);
  font-size: 12px;
}

.admin-contact dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.site-footer {
  display: grid;
  gap: 20px;
  padding: 28px 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-links a {
  color: var(--deep);
  font-size: 14px;
}

.copyright {
  font-size: 13px;
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 360ms ease, transform 360ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 430px) {
  .trust-row {
    display: none;
  }

  .hero {
    padding-bottom: 18px;
  }

  .architecture-list div {
    grid-template-columns: 38px 1fr;
  }

  .architecture-list p {
    grid-column: 2;
  }
}

@media (max-width: 380px) {
  .section-shell {
    width: min(100% - 28px, 1120px);
  }

  h1 {
    font-size: 34px;
  }

  .button {
    width: 100%;
  }
}

@media (min-width: 640px) {
  .contact-form,
  .admin-fields.compact,
  .admin-fields {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-form .wide,
  .contact-form button,
  .form-status,
  .admin-fields .wide,
  .blog-body-editor {
    grid-column: 1 / -1;
  }

  .admin-topbar {
    grid-template-columns: 1fr auto;
  }
}

@media (min-width: 780px) {
  .site-header {
    padding-inline: 32px;
  }

  .menu-button {
    display: none;
  }

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

  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.86fr);
    gap: 52px;
    min-height: min(710px, calc(100svh - 150px));
    padding: 64px 0 50px;
  }

  h1 {
    font-size: 56px;
  }

  h2 {
    font-size: 36px;
  }

  .page-hero {
    grid-template-columns: minmax(240px, 0.7fr) minmax(0, 1.3fr);
    gap: 72px;
    align-items: end;
    padding: 72px 0 48px;
  }

  .page-hero h1 {
    font-size: 42px;
  }

  .privacy-hero h1 {
    font-size: 44px;
  }

  .case-band {
    padding-block: 84px;
  }

  .case-heading {
    grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
    gap: 72px;
    align-items: end;
  }

  .case-row {
    grid-template-columns: 40px minmax(190px, 0.78fr) minmax(280px, 1.25fr) minmax(220px, 0.9fr);
    gap: 24px;
    align-items: start;
    padding: 28px 0;
  }

  .case-row > p,
  .case-row > ul {
    grid-column: auto;
  }

  .operating,
  .visual-band,
  .home-index,
  .home-blog,
  .home-panel,
  .capability-page,
  .scenario-page,
  .pricing-page,
  .blog-page,
  .method-page,
  .matrix-band,
  .checklist-band {
    padding-block: 84px;
  }

  .blog-overview {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.62fr);
    gap: 64px;
    padding: 84px 0 34px;
  }

  .blog-page {
    padding-top: 44px;
  }

  .operating-layout,
  .visual-layout,
  .contact,
  .method-shell {
    grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.8fr);
    gap: 54px;
    align-items: start;
  }

  .visual-layout {
    grid-template-columns: minmax(360px, 0.9fr) minmax(0, 0.8fr);
    align-items: center;
  }

  .index-row {
    grid-template-columns: 110px minmax(240px, 0.8fr) 1fr;
    align-items: baseline;
  }

  .education-grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 36px;
  }

  .education-band .education-grid article:nth-child(odd) {
    padding-right: 18px;
  }

  .detail-ledger-head,
  .detail-ledger-row {
    display: grid;
    grid-template-columns: minmax(150px, 0.7fr) minmax(260px, 1.2fr) minmax(260px, 1.2fr);
    column-gap: 24px;
  }

  .detail-ledger-head {
    padding: 11px 0;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
    font-weight: 760;
  }

  .detail-ledger-row p,
  .detail-ledger-row p:first-child {
    padding: 16px 0;
  }

  .delivery-standard-list article {
    grid-template-columns: 50px minmax(220px, 0.65fr) minmax(0, 1.35fr);
    gap: 28px;
    align-items: start;
    padding: 26px 0;
  }

  .delivery-standard-list span {
    grid-row: auto;
  }

  .home-feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .home-pricing-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .home-scenario {
    grid-template-columns: 180px minmax(260px, 0.72fr) 1fr;
    align-items: baseline;
  }

  .capability-row {
    grid-template-columns: 90px minmax(220px, 0.7fr) 1fr;
    align-items: start;
  }

  .scenario-page {
    grid-template-columns: repeat(2, 1fr);
    border-bottom: 1px solid var(--line);
  }

  .scenario-page article {
    min-height: 250px;
    padding: 26px;
    border-right: 1px solid var(--line);
  }

  .scenario-page article:nth-child(2n) {
    border-right: 0;
  }

  .matrix-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .pricing-row {
    grid-template-columns: minmax(160px, 0.42fr) 1fr minmax(180px, 0.52fr);
    align-items: start;
  }

  .commercial-card {
    grid-template-columns: 1fr minmax(320px, 0.72fr);
    align-items: center;
    padding: 32px;
  }

  .blog-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .admin-grid {
    grid-template-columns: 300px 1fr;
    align-items: start;
  }

  .legal-layout {
    grid-template-columns: 260px 1fr;
    align-items: start;
  }

  .legal-toc {
    position: sticky;
    top: 92px;
    max-height: calc(100svh - 120px);
    overflow: auto;
  }

  .admin-contact {
    grid-template-columns: minmax(220px, 0.42fr) 1fr;
  }

  .admin-contact p,
  .admin-contact dl,
  .admin-contact form {
    grid-column: 1 / -1;
  }

  .site-footer {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding-inline: 32px;
  }

  .copyright {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1120px) {
  .section-shell {
    width: min(1180px, calc(100% - 64px));
  }
}