@charset "UTF-8";

:root {
  --cream: #F5F0E6;
  --paper: #FDFBF7;
  --deep-blue: #1F3A5F;
  --deep-ink: #2B2B2B;
  --blood-orange: #E85D04;
  --silver: #B0B7C3;
  --light-silver: #E5E9F0;
  --green: #2F9E6E;
  --amber: #F4A340;
  --info: #4A7FB5;
  --font-heading: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  --container: 1280px;
  --radius: 6px;
  --shadow-sm: 0 1px 3px rgba(31, 58, 95, .12);
  --shadow-md: 0 8px 24px rgba(31, 58, 95, .12);
  --transition: .2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--cream);
  color: var(--deep-ink);
  font-family: var(--font-body);
  font-size: clamp(1rem, 1vw, 1.125rem);
  line-height: 1.75;
}

h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

a {
  color: inherit;
}

::selection {
  background: var(--blood-orange);
  color: #fff;
}

:focus-visible {
  outline: 3px solid var(--blood-orange);
  outline-offset: 2px;
  border-radius: 2px;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.25;
  color: var(--deep-blue);
  margin-bottom: .5em;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  letter-spacing: .02em;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

h3 {
  font-size: 1.4rem;
}

p {
  margin-bottom: 1em;
}

.container {
  width: 100%;
  max-width: 1320px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2rem);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1000;
  padding: .75rem 1.5rem;
  background: var(--deep-blue);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  transition: top .2s ease;
}

.skip-link:focus {
  top: 0;
}

.site-header {
  position: relative;
  z-index: 100;
  flex-shrink: 0;
}

.utility-bar {
  background: var(--deep-blue);
  color: rgba(255, 255, 255, .85);
}

.utility-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: .4rem;
}

.status-chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .25rem .8rem;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  color: #fff;
  font-family: var(--font-mono);
  font-size: .75rem;
  line-height: 1.4;
  transition: background-color .2s ease;
}

.status-chip:hover {
  background: rgba(255, 255, 255, .12);
}

.status-chip__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  flex: 0 0 auto;
}

.status-chip__text {
  letter-spacing: .08em;
}

.status-chip__tip {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  z-index: 10;
  background: var(--deep-ink);
  color: #fff;
  padding: .3rem .7rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: .75rem;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}

.status-chip:hover .status-chip__tip,
.status-chip:focus-visible .status-chip__tip,
.status-chip[data-copied] .status-chip__tip {
  opacity: 1;
  transform: translateY(0);
}

.status-chip[data-copied] .status-chip__tip {
  background: var(--green);
}

.utility-nav {
  display: flex;
  align-items: center;
  gap: .8rem;
  font-family: var(--font-mono);
  font-size: .8rem;
}

.utility-nav__link {
  color: var(--silver);
  text-decoration: none;
  letter-spacing: .02em;
  transition: color .2s ease;
}

.utility-nav__link:hover {
  color: #fff;
}

.utility-nav__sep {
  color: rgba(255, 255, 255, .4);
}

.header-main {
  background: var(--cream);
  border-bottom: 1px solid var(--silver);
}

.header-main__inner {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding-block: 1.75rem 1.5rem;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  text-decoration: none;
}

.brand::after {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  background: var(--blood-orange);
  margin-top: .6rem;
}

.brand__name {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
  color: var(--deep-blue);
  letter-spacing: .06em;
}

.brand__sub {
  margin-top: .25rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .18em;
  color: var(--deep-ink);
  opacity: .8;
}

.nav-toggle {
  display: none;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 48px;
  height: 48px;
  border: 1px solid var(--deep-blue);
  border-radius: 6px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: var(--paper);
  color: var(--deep-blue);
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform .22s ease, opacity .22s ease;
}

.nav-toggle__label {
  font-size: .68rem;
  font-weight: 700;
  line-height: 1;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  background: var(--paper);
  border-bottom: 1px solid var(--light-silver);
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(1.2rem, 3vw, 2.5rem);
  padding-block: .9rem;
}

.site-nav__item {
  margin: 0;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: .5rem .1rem .65rem;
  font-weight: 700;
  font-size: 1rem;
  color: var(--deep-ink);
  text-decoration: none;
  letter-spacing: .02em;
  transition: color .2s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--blood-orange);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s ease;
}

.site-nav__link:hover {
  color: var(--deep-blue);
}

.site-nav__link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav__link[aria-current="page"] {
  color: var(--deep-blue);
}

.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-footer {
  margin-top: auto;
  flex-shrink: 0;
}

.footer-lead {
  background: var(--deep-blue);
  color: rgba(255, 255, 255, .85);
}

.footer-lead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  flex: 0 0 auto;
}

.footer-brand__name {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1;
  color: #fff;
  letter-spacing: .04em;
}

.footer-brand__sub {
  margin-top: .3rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--silver);
  letter-spacing: .14em;
}

.footer-trust-text {
  max-width: 720px;
  margin: 0;
  padding-left: 1.25rem;
  border-left: 3px solid var(--blood-orange);
  font-size: .95rem;
  line-height: 1.8;
  color: var(--silver);
}

.footer-sitemap {
  background: var(--light-silver);
  color: var(--deep-ink);
}

.footer-sitemap__inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: clamp(2rem, 4vw, 4rem);
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.footer-col {
  min-width: 0;
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--deep-blue);
  border-bottom: 1px solid var(--silver);
  padding-bottom: .6rem;
  margin-bottom: 1rem;
}

.footer-links li + li {
  margin-top: .6rem;
}

.footer-links a {
  color: var(--deep-ink);
  text-decoration: none;
  transition: color .2s ease;
}

.footer-links a:hover {
  color: var(--blood-orange);
}

.footer-meta {
  font-size: .95rem;
  line-height: 1.7;
}

.footer-meta li + li {
  margin-top: .6rem;
}

.footer-bottom {
  background: var(--deep-ink);
  color: var(--silver);
}

.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem 1.5rem;
  padding-block: .9rem;
  font-family: var(--font-mono);
  font-size: .8rem;
}

.footer-top-btn {
  background: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: .35rem .75rem;
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: .8rem;
  line-height: 1.4;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease;
}

.footer-top-btn:hover {
  color: var(--blood-orange);
  border-color: var(--blood-orange);
}

.section {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.section--tint {
  background: var(--light-silver);
}

.section__head {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.section__index {
  display: block;
  margin-bottom: .4rem;
  font-family: var(--font-mono);
  font-size: .9rem;
  letter-spacing: .2em;
  color: var(--blood-orange);
}

.lead {
  font-size: 1.125rem;
  line-height: 1.8;
  color: rgba(43, 43, 43, .85);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  border: 2px solid transparent;
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

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

.btn--primary:hover {
  background: #162b47;
  border-color: #162b47;
}

.btn--ghost {
  border-color: var(--deep-blue);
  color: var(--deep-blue);
}

.btn--ghost:hover {
  background: var(--deep-blue);
  color: #fff;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .25rem .75rem;
  border-radius: 999px;
  background: var(--light-silver);
  color: var(--deep-blue);
  font-family: var(--font-mono);
  font-size: .8rem;
  line-height: 1.6;
}

.chip--orange {
  background: rgba(232, 93, 4, .15);
  color: var(--blood-orange);
}

.chip--green {
  background: rgba(47, 158, 110, .15);
  color: #1c6e4a;
}

.chip--amber {
  background: rgba(244, 163, 64, .18);
  color: #8a5a00;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

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

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

.card {
  padding: 1.5rem;
  background: var(--paper);
  border: 1px solid var(--light-silver);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.card__title {
  font-size: 1.15rem;
  margin-bottom: .6rem;
}

.card__text {
  font-size: .95rem;
  color: rgba(43, 43, 43, .85);
}

.note {
  display: flex;
  gap: .75rem;
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--info);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(74, 127, 181, .08);
  color: var(--deep-ink);
}

.note__icon {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  color: var(--info);
}

.note--warn {
  border-color: var(--amber);
  background: rgba(244, 163, 64, .12);
}

.note--warn .note__icon {
  color: #b06a00;
}

.note--success {
  border-color: var(--green);
  background: rgba(47, 158, 110, .1);
}

.note--success .note__icon {
  color: var(--green);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  padding-block: .75rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--deep-blue);
}

.breadcrumb__sep {
  color: var(--silver);
}

.breadcrumb__link {
  color: var(--deep-blue);
  text-decoration: none;
  transition: color .2s ease;
}

.breadcrumb__link:hover {
  color: var(--blood-orange);
}

.breadcrumb__current {
  color: var(--deep-ink);
  font-weight: 700;
}

.divider {
  height: 1px;
  border: 0;
  background: var(--silver);
  margin-block: 2rem;
}

.prose {
  max-width: 72ch;
}

.prose p {
  margin-bottom: 1.2em;
}

.prose h2,
.prose h3 {
  margin-top: 1.5em;
}

.prose a {
  color: var(--info);
}

.table-wrap {
  overflow-x: auto;
  margin-block: 1rem;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: .95rem;
}

.table th,
.table td {
  padding: .75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--light-silver);
}

.table th {
  background: var(--light-silver);
  color: var(--deep-blue);
  font-weight: 700;
  font-family: var(--font-body);
}

.table--striped tbody tr:nth-child(even) {
  background: var(--paper);
}

.media-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--silver);
  border-radius: var(--radius);
  background: var(--light-silver);
}

.media-frame--wide {
  aspect-ratio: 16 / 7;
}

.media-frame--tall {
  aspect-ratio: 3 / 4;
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 76% 22%, rgba(232, 93, 4, .22) 0 12%, transparent 13%),
    linear-gradient(135deg, transparent 0%, transparent 45%, rgba(31, 58, 95, .14) 45% 58%, transparent 58%),
    linear-gradient(55deg, transparent 0%, transparent 52%, rgba(176, 183, 195, .45) 52% 100%);
}

.media-frame::after {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: .5rem .75rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--deep-blue);
  background: rgba(245, 240, 230, .8);
}

@media (max-width: 920px) {
  .footer-sitemap__inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer-col--contact {
    grid-column: 1 / -1;
  }

  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .utility-nav {
    display: none;
  }

  .header-main__inner {
    padding-block: 1.25rem;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 0;
    overflow: hidden auto;
    visibility: hidden;
    background: var(--paper);
    border-bottom: 1px solid var(--silver);
    box-shadow: var(--shadow-md);
    transition: max-height .3s ease, visibility 0s linear .3s;
  }

  .site-nav[data-open] {
    max-height: min(80vh, 520px);
    visibility: visible;
    transition: max-height .3s ease, visibility 0s;
  }

  .site-nav__list {
    flex-direction: column;
    gap: 0;
    padding: 0;
  }

  .site-nav__item {
    border-bottom: 1px solid var(--light-silver);
  }

  .site-nav__item:first-child {
    border-top: 1px solid var(--light-silver);
  }

  .site-nav__link {
    display: block;
    padding: 1rem 1.25rem;
    border-radius: 0;
  }

  .site-nav__link::after {
    left: 0;
    right: auto;
    width: 4px;
    height: 0;
    transform: none;
    transition: height .2s ease;
  }

  .site-nav__link:hover::after,
  .site-nav__link[aria-current="page"]::after {
    height: 100%;
  }

  .footer-lead__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }
}

@media (max-width: 560px) {
  .footer-sitemap__inner {
    grid-template-columns: 1fr;
  }

  .footer-bottom__inner {
    justify-content: center;
    text-align: center;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}