:root {
  color-scheme: light;
  --bg: #f7faf9;
  --surface: #ffffff;
  --ink: #16211f;
  --muted: #5d6b67;
  --line: #d9e3df;
  --line-strong: #bfd0ca;
  --accent: #087f5b;
  --accent-strong: #066b4d;
  --accent-soft: #e4f6ef;
  --code-bg: #10201c;
  --code-ink: #d9fff0;
  --warn: #9a5b00;
  --danger: #b42318;
  --shadow: 0 16px 40px rgba(18, 33, 31, 0.08);
  --radius: 8px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(228, 246, 239, 0.86) 0, rgba(247, 250, 249, 0) 260px),
    var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #044b36;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(217, 227, 223, 0.82);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.header-inner,
.footer-inner,
.main-shell {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--code-bg);
  color: var(--code-ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 15px;
  box-shadow: 0 8px 20px rgba(16, 32, 28, 0.12);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.primary-nav a,
.nav-menu summary {
  color: var(--muted);
  text-decoration: none;
}

.primary-nav a:hover,
.nav-menu summary:hover {
  color: var(--ink);
}

.nav-menu {
  position: relative;
}

.nav-menu summary {
  cursor: pointer;
  list-style: none;
}

.nav-menu summary::-webkit-details-marker {
  display: none;
}

.nav-menu summary::after {
  content: "⌄";
  padding-left: 5px;
  color: var(--accent);
}

.nav-menu[open] summary::after {
  content: "⌃";
}

.nav-panel {
  position: absolute;
  right: 0;
  top: 34px;
  display: grid;
  width: min(620px, calc(100vw - 32px));
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.nav-panel a {
  padding: 5px 0;
  color: var(--ink);
}

.main-shell {
  padding: 54px 0 72px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  align-items: start;
  gap: 38px;
  margin-bottom: 56px;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(2.25rem, 4vw, 4.7rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 640px;
}

.hero-copy p {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(1.04rem, 1.6vw, 1.23rem);
}

.hero-actions,
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button,
button.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 15px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 750;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}

.button:hover,
button.button:hover {
  background: var(--accent-strong);
  color: #fff;
}

.button.secondary,
button.button.secondary {
  border-color: var(--line-strong);
  background: #fff;
  color: var(--ink);
}

.button.secondary:hover,
button.button.secondary:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.tool-panel {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tool-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--line);
}

.tool-header h2 {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.25;
}

.tool-type {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tool-body {
  display: grid;
  gap: 16px;
  padding: 18px;
}

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

.field {
  display: grid;
  gap: 7px;
}

.field label {
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.field textarea,
.field input,
.field select {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #fbfdfc;
  color: var(--ink);
}

.field textarea {
  min-height: 168px;
  padding: 12px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 15px;
  line-height: 1.55;
}

.field input,
.field select {
  min-height: 44px;
  padding: 10px 12px;
}

.output-box {
  min-height: 168px;
  padding: 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--code-bg);
  color: var(--code-ink);
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 15px;
  line-height: 1.55;
}

.tool-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.status-line {
  min-height: 24px;
  color: var(--muted);
  font-size: 14px;
}

.status-line[data-state="error"] {
  color: var(--danger);
}

.multi-output {
  display: grid;
  gap: 10px;
}

.result-row {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid rgba(217, 227, 223, 0.4);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
}

.result-row strong {
  color: #a6f0d4;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 44px;
  align-items: start;
}

.article {
  max-width: 820px;
}

.article h2 {
  margin: 38px 0 12px;
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.18;
}

.article h3 {
  margin: 28px 0 8px;
  font-size: 1.13rem;
  line-height: 1.3;
}

.article p,
.article li {
  color: #33423f;
}

.article p {
  margin: 0 0 18px;
}

.article ul,
.article ol {
  padding-left: 22px;
}

.article code,
.inline-code {
  padding: 0.1em 0.32em;
  border-radius: 5px;
  background: #e9f2ef;
  color: #16362f;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.94em;
}

.side-panel {
  position: sticky;
  top: 92px;
  display: grid;
  gap: 18px;
}

.side-section {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
}

.side-section h2 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.link-list {
  display: grid;
  gap: 9px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.link-list a {
  color: var(--ink);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.link-list a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
}

.section-band {
  margin: 54px 0;
  padding: 34px 0;
  border-block: 1px solid var(--line);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.related-card {
  display: grid;
  gap: 6px;
  min-height: 122px;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
}

.related-card strong {
  color: var(--ink);
  font-size: 1rem;
}

.related-card span {
  color: var(--muted);
  font-size: 14px;
}

.company-page {
  max-width: 860px;
}

.company-page h1 {
  margin: 0 0 18px;
  font-size: clamp(2.1rem, 3.8vw, 4rem);
  line-height: 1.05;
}

.company-page h2 {
  margin: 34px 0 12px;
}

.contact-box {
  padding: 20px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
}

.email-text {
  font-weight: 800;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #ffffff;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 36px;
  padding: 42px 0;
}

.footer-brand p {
  max-width: 420px;
  color: var(--muted);
  font-size: 14px;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer-columns h2 {
  margin: 0 0 10px;
  font-size: 0.95rem;
}

.footer-columns a,
.footer-columns span {
  display: block;
  margin: 7px 0;
  color: var(--muted);
  font-size: 14px;
}

.footer-columns a {
  text-decoration: none;
}

.footer-columns a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 16px 0;
  color: var(--muted);
  font-size: 13px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 100;
  padding: 10px 12px;
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
}

.skip-link:focus {
  top: 16px;
}

@media (max-width: 920px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 14px 0;
  }

  .primary-nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 12px 16px;
  }

  .nav-panel {
    left: 0;
    right: auto;
    grid-template-columns: 1fr;
  }

  .hero,
  .content-layout,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 28px;
  }

  .side-panel {
    position: static;
  }

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

@media (max-width: 640px) {
  .header-inner,
  .footer-inner,
  .main-shell {
    width: min(100% - 24px, 1160px);
  }

  .main-shell {
    padding-top: 32px;
  }

  .field-grid,
  .related-grid,
  .footer-columns {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: clamp(2rem, 12vw, 3rem);
  }

  .tool-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .result-row {
    grid-template-columns: 1fr;
  }
}