:root {
  --color-white: #FFFFFF;
  --color-ink: #0A0A0A;
  --color-blue: #0A3D62;
  --color-orange: #FF6A00;
  --color-gray-light: #F3F4F6;
  --color-gray-line: #D1D5DB;
  --color-text: #111827;
  --color-muted: #6B7280;
  --color-green: #10B981;
  --color-red: #EF4444;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", Georgia, "Times New Roman", serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --container: 1200px;
  --gutter: clamp(20px, 4vw, 48px);
  --space-section: clamp(56px, 9vw, 112px);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-1: 0 8px 24px rgba(10, 10, 10, 0.08);
  --shadow-2: 0 16px 32px rgba(10, 61, 98, 0.16);
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--color-white);
  color: var(--color-text);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.75;
}

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 .6em;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--color-blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

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

ul[class] {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

button {
  font: inherit;
  cursor: pointer;
}

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

::selection {
  background: var(--color-orange);
  color: var(--color-ink);
}

[hidden] {
  display: none !important;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation: none !important;
    transition: none !important;
  }
}

.layout-container {
  width: min(calc(100% - var(--gutter) - var(--gutter)), var(--container));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-section);
}

.section--tight {
  padding-block: clamp(32px, 5vw, 64px);
}

.section--muted {
  background: var(--color-gray-light);
}

.section--dark {
  background: var(--color-ink);
  color: var(--color-white);
}

.section--dark .section-kicker {
  color: var(--color-orange);
}

.section--dark .section-title {
  color: var(--color-white);
}

.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 500;
  background: var(--color-orange);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 0 0 12px 12px;
  transition: top .2s var(--ease);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 300;
  background: var(--color-ink);
  color: var(--color-white);
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  box-shadow: 0 8px 30px rgba(0, 0, 0, .25);
}

.site-header__progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 3px;
  width: 0%;
  background: var(--color-orange);
  z-index: 2;
  will-change: width;
  transition: width .1s linear;
}

.site-header__inner {
  display: flex;
  align-items: stretch;
  min-height: 68px;
  gap: 16px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  padding-block: 10px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--color-blue);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .02em;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .18), 0 0 0 4px rgba(255, 106, 0, .16);
}

.brand-copy {
  display: grid;
  line-height: 1.15;
}

.brand-copy__name {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: .02em;
  color: var(--color-white);
}

.brand-copy__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .55);
}

.status-pill {
  margin-left: 2px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .05em;
  color: var(--color-white);
  background: var(--color-orange);
  padding: 5px 9px;
  border-radius: 999px;
}

.status-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-ink);
}

.site-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav__item {
  position: relative;
}

.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 10px;
  border-radius: 10px;
  color: rgba(255, 255, 255, .74);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.site-nav__link:hover {
  background: rgba(255, 255, 255, .08);
  color: var(--color-white);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-white);
  background: var(--color-blue);
  box-shadow: inset 0 -2px 0 var(--color-orange);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--color-orange);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  align-self: center;
  margin-left: auto;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .24);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 10px;
}

.nav-toggle:hover {
  border-color: var(--color-orange);
}

.nav-toggle[aria-expanded="true"] {
  background: rgba(255, 106, 0, .18);
  border-color: transparent;
}

.nav-toggle__bars {
  display: block;
  position: relative;
  width: 16px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--color-white);
}

.nav-toggle__bars::before {
  top: -5px;
}

.nav-toggle__bars::after {
  top: 5px;
}

.site-footer {
  background-color: var(--color-ink);
  background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 44px 44px;
  color: rgba(255, 255, 255, .72);
  font-family: var(--font-serif);
}

.site-footer__inner {
  padding-block: clamp(40px, 7vw, 72px) 28px;
}

.site-footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  padding-bottom: 28px;
  margin-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  position: relative;
}

.site-footer__top::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 72px;
  height: 4px;
  background: var(--color-orange);
  border-radius: 2px 2px 0 0;
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: min(100%, 280px);
}

.footer-brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--color-orange);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-weight: 700;
}

.footer-brand__link {
  display: grid;
  gap: 2px;
  text-decoration: none;
}

.footer-brand__name {
  color: var(--color-white);
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 18px;
}

.footer-brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  color: rgba(255, 255, 255, .5);
  text-transform: uppercase;
}

.footer-brand__link:hover .footer-brand__name {
  color: var(--color-orange);
}

.site-footer__statement {
  flex: 1;
  min-width: 280px;
  margin: 0;
  font-size: 15px;
  color: rgba(255, 255, 255, .66);
}

.footer-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--color-blue);
  color: var(--color-white);
  border-radius: 999px;
  padding: 6px 12px;
  border: 1px solid rgba(255, 255, 255, .16);
  letter-spacing: .06em;
  white-space: nowrap;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-col__title {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin-bottom: 14px;
}

.footer-col--contact {
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .08);
  padding: 18px;
  border-radius: var(--radius-md);
}

.footer-nav {
  display: grid;
  gap: 6px;
}

.footer-nav__link {
  display: inline-block;
  padding: 2px 0;
  color: rgba(255, 255, 255, .72);
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 14px;
}

.footer-nav__link:hover {
  color: var(--color-white);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-contact {
  margin: 0 0 4px;
  font-size: 14px;
  color: rgba(255, 255, 255, .66);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, .46);
}

.site-footer__bottom a {
  color: rgba(255, 255, 255, .7);
  text-decoration: none;
}

.site-footer__bottom a:hover {
  color: var(--color-orange);
}

.site-footer__icp,
.site-footer__copyright {
  margin: 0;
}

.page-hero {
  padding-block: clamp(48px, 8vw, 96px);
}

.page-hero__kicker {
  font-family: var(--font-mono);
  color: var(--color-orange);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.page-hero__title {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.08;
  margin: 10px 0 16px;
}

.page-hero__lede {
  font-size: 17px;
  color: var(--color-muted);
  max-width: 680px;
  margin: 0;
}

.page-hero--dark {
  background: var(--color-ink);
  color: var(--color-white);
}

.page-hero--dark .page-hero__lede {
  color: rgba(255, 255, 255, .66);
}

.page-hero--dark .page-hero__title {
  color: var(--color-white);
}

.section-head {
  max-width: 760px;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.section-kicker {
  display: block;
  font-family: var(--font-mono);
  color: var(--color-orange);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(22px, 3vw, 34px);
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  padding: 12px 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  text-decoration: none;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

.btn--primary {
  background: var(--color-blue);
  color: var(--color-white);
}

.btn--primary:hover {
  background: #0e4c78;
  color: var(--color-white);
}

.btn--orange {
  background: var(--color-orange);
  color: var(--color-ink);
}

.btn--orange:hover {
  background: #ff7f2b;
  color: var(--color-ink);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-gray-line);
  color: var(--color-text);
}

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

.btn--small {
  padding: 8px 12px;
  font-size: 13px;
  border-radius: 10px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--color-gray-light);
  color: var(--color-text);
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--color-gray-line);
}

.tag--blue {
  background: var(--color-blue);
  border-color: var(--color-blue);
  color: var(--color-white);
}

.tag--orange {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-ink);
}

.tag--green {
  background: var(--color-green);
  border-color: var(--color-green);
  color: var(--color-white);
}

.tag--red {
  background: var(--color-red);
  border-color: var(--color-red);
  color: var(--color-white);
}

.grid {
  display: grid;
  gap: 20px;
}

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

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

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

.bento-cell {
  grid-column: span 4;
  background: var(--color-gray-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid rgba(209, 213, 219, .6);
  min-height: 180px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .6) inset;
}

.bento-cell--span2 {
  grid-column: span 6;
}

.bento-cell--span3 {
  grid-column: span 8;
}

.bento-cell--full {
  grid-column: 1 / -1;
}

.bento-cell--dark {
  background: var(--color-ink);
  color: var(--color-white);
  border-color: var(--color-ink);
}

.bento-cell--blue {
  background: var(--color-blue);
  color: var(--color-white);
  border-color: var(--color-blue);
}

.bento-cell--orange {
  background: var(--color-orange);
  color: var(--color-ink);
  border-color: var(--color-orange);
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-line);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-1);
  border-color: rgba(10, 61, 98, .3);
}

.card--muted {
  background: var(--color-gray-light);
}

.card--dark {
  background: var(--color-ink);
  color: var(--color-white);
  border-color: var(--color-ink);
}

.card__title {
  font-size: 18px;
  margin-bottom: 8px;
}

.card__meta {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.card__body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin: 0;
}

.card--dark .card__body {
  color: rgba(255, 255, 255, .72);
}

.stat {
  display: grid;
  gap: 4px;
}

.stat__value {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 500;
  line-height: 1;
  color: var(--color-blue);
}

.stat__label {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-muted);
}

.stat--orange .stat__value {
  color: var(--color-orange);
}

.stat--green .stat__value {
  color: var(--color-green);
}

.stat--red .stat__value {
  color: var(--color-red);
}

.breadcrumbs {
  margin: 20px 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  padding: 0;
  margin: 0;
  list-style: none;
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumbs__separator {
  color: var(--color-gray-line);
}

.breadcrumbs__current {
  color: var(--color-muted);
}

.breadcrumbs a {
  color: var(--color-blue);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-orange);
}

.prose {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.9;
}

.prose h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  margin-top: 1.6em;
}

.prose h3 {
  font-size: clamp(18px, 2vw, 22px);
  margin-top: 1.4em;
}

.prose p {
  margin: 0 0 1.2em;
}

.prose a {
  font-weight: 600;
}

.prose ul,
.prose ol {
  padding-left: 1.4em;
  margin-bottom: 1.2em;
}

.prose li {
  margin-bottom: .4em;
}

.prose img {
  border-radius: var(--radius-md);
  margin: 1.5em 0;
}

.media-frame {
  --aspect-ratio: 75%;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-gray-light);
  border: 1px solid var(--color-gray-line);
}

.media-frame::before {
  content: "";
  display: block;
  padding-top: var(--aspect-ratio);
}

.media-frame--wide {
  --aspect-ratio: 56.25%;
}

.media-frame--portrait {
  --aspect-ratio: 130%;
}

.media-frame--square {
  --aspect-ratio: 100%;
}

.media-frame > img,
.media-frame > picture,
.media-frame > video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--color-muted);
  background: linear-gradient(135deg, var(--color-gray-light), #e5e7eb);
}

.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 2px solid rgba(10, 61, 98, .18);
  margin-bottom: 20px;
}

.tab {
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  color: var(--color-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.tab:hover {
  color: var(--color-blue);
}

.tab[aria-selected="true"] {
  color: var(--color-blue);
  border-bottom-color: var(--color-orange);
}

.tab__index {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-orange);
}

.tabpanel {
  background: var(--color-white);
  border: 1px solid var(--color-gray-line);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding: clamp(16px, 3vw, 24px);
}

@media (max-width: 920px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    order: 3;
    flex-basis: 100%;
    margin-left: 0;
    align-items: stretch;
    border-top: 1px solid rgba(255, 255, 255, .12);
    padding: 10px 0 14px;
  }

  .site-nav[data-open] {
    display: block;
  }

  .site-nav__list {
    display: grid;
    gap: 2px;
  }

  .site-nav__link {
    display: flex;
    align-items: center;
    padding: 12px 10px;
    border-radius: 8px;
  }

  .site-nav__link[aria-current="page"] {
    box-shadow: inset 3px 0 0 var(--color-orange);
  }

  .site-header__inner {
    min-height: 60px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__statement {
    min-width: 100%;
  }

  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bento-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .bento-cell,
  .bento-cell--span2 {
    grid-column: span 3;
  }

  .bento-cell--span3,
  .bento-cell--full {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .bento-cell,
  .bento-cell--span2,
  .bento-cell--span3,
  .bento-cell--full {
    grid-column: 1 / -1;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .brand-copy__sub {
    display: none;
  }

  .status-pill {
    font-size: 10px;
    padding: 4px 7px;
  }

  .brand-copy__name {
    font-size: 15px;
  }
}