:root {
  --c-green: #0B3D2E;
  --c-gold: #C9A227;
  --c-paper: #F7F3E9;
  --c-ink: #1A1A1A;
  --c-light-green: #1E6B50;
  --c-gold-light: #DFC46B;
  --c-gray: #333333;
  --c-white: #FFFFFF;
  --rail-width: 17rem;
  --side-pad: clamp(1.25rem, 4vw, 3.5rem);
  --content-max: 72rem;
  --font-display: "Impact", "Arial Narrow", "Noto Sans CJK SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans CJK SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "DIN Alternate", "Roboto Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  padding-left: var(--rail-width);
  font-family: var(--font-body);
  line-height: 1.75;
  color: var(--c-ink);
  background-color: var(--c-paper);
  background-image: linear-gradient(rgba(11, 61, 46, .03) 1px, transparent 1px), linear-gradient(90deg, rgba(11, 61, 46, .03) 1px, transparent 1px);
  background-size: 2rem 2rem;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: .02em;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--c-green);
  text-underline-offset: .18em;
}

ul, ol {
  padding-left: 1.2rem;
}

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

table {
  border-collapse: collapse;
}

button {
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

::selection {
  background: var(--c-gold);
  color: var(--c-green);
}

:focus-visible {
  outline: 3px solid var(--c-gold);
  outline-offset: 2px;
}

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

#main-content {
  scroll-margin-top: 5rem;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
  padding: clamp(2rem, 5vw, 4.5rem) var(--side-pad) clamp(3rem, 8vw, 6rem);
}

.page-container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
}

.prose {
  max-width: 44rem;
}

.prose p {
  margin: 0 0 1.1rem;
}

.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 999;
  padding: .65rem 1.1rem;
  background: var(--c-gold);
  color: var(--c-green);
  font-weight: 700;
  text-decoration: none;
  border-radius: 2px;
  transform: translateY(-400%);
  transition: transform .18s var(--ease);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

.page-progress {
  position: fixed;
  top: 0;
  right: 0;
  width: 4px;
  height: 100vh;
  height: 100dvh;
  z-index: 300;
  background: rgba(255, 255, 255, .12);
  pointer-events: none;
}

.page-progress-thumb {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, var(--c-gold), var(--c-gold-light));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .1s linear;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: var(--rail-width);
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  background: var(--c-green);
  color: var(--c-paper);
  border-right: 1px solid rgba(255, 255, 255, .08);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent 0%, var(--c-gold) 12%, transparent 26%, transparent 100%);
  opacity: .55;
  pointer-events: none;
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--c-gold), var(--c-light-green) 40%, var(--c-gold));
  pointer-events: none;
}

.header-rail {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
}

.brand-block {
  padding-bottom: clamp(1.2rem, 3vw, 1.8rem);
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
}

.brand-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.brand-site {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .3em;
  color: var(--c-gold-light);
  text-transform: uppercase;
}

.brand-masthead {
  margin: .25rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.4vw, 2.15rem);
  font-weight: 800;
  letter-spacing: .04em;
  line-height: 1.05;
  color: var(--c-white);
}

.brand-tagline {
  margin: .35rem 0 0;
  font-size: .85rem;
  letter-spacing: .06em;
  color: rgba(247, 243, 233, .66);
}

.site-nav {
  flex: 1 1 auto;
  min-height: 0;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .15rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .68rem .8rem;
  border-left: 3px solid transparent;
  color: rgba(247, 243, 233, .76);
  text-decoration: none;
  font-weight: 700;
  font-size: .95rem;
  background: transparent;
  transition: background .15s, color .15s, border-color .15s;
}

.nav-link::before {
  content: "";
  width: .4rem;
  height: .4rem;
  flex: none;
  background: var(--c-gold);
  transform: skewX(-24deg);
  opacity: 0;
  transition: opacity .15s;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--c-white);
  background: rgba(255, 255, 255, .05);
  border-left-color: var(--c-gold-light);
}

.nav-link:hover::before,
.nav-link:focus-visible::before {
  opacity: 1;
}

.nav-link[aria-current="page"] {
  background: var(--c-gold);
  color: var(--c-green);
  border-left-color: var(--c-paper);
}

.nav-link[aria-current="page"]::before {
  opacity: 1;
  background: var(--c-green);
}

.header-status {
  margin-top: auto;
  padding-top: clamp(1rem, 2.5vw, 1.5rem);
  border-top: 1px solid rgba(255, 255, 255, .14);
}

.status-line {
  margin: 0 0 .5rem;
  padding-left: .75rem;
  border-left: 2px solid var(--c-gold);
  font-size: .82rem;
  line-height: 1.55;
  color: rgba(247, 243, 233, .7);
}

.coordinate-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  color: rgba(201, 162, 39, .7);
  text-transform: uppercase;
}

.nav-toggle {
  display: none;
}

.site-footer {
  flex-shrink: 0;
  width: 100%;
  position: relative;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 1.5rem;
  background: var(--c-green);
  color: var(--c-paper);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--c-gold), transparent 30%, var(--c-light-green), var(--c-gold-light));
}

.footer-inner {
  width: min(calc(100% - var(--side-pad) * 2), var(--content-max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, .8fr) minmax(0, 1.2fr);
  gap: clamp(2rem, 5vw, 4rem);
}

.footer-brand,
.footer-nav,
.footer-contact {
  min-width: 0;
}

.footer-site-name {
  margin: 0 0 .25rem;
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--c-white);
}

.footer-brand-line {
  margin: 0;
  font-size: .85rem;
  letter-spacing: .08em;
  color: var(--c-gold-light);
}

.footer-trust {
  margin-top: 1rem;
  max-width: 32rem;
  font-size: .78rem;
  line-height: 1.7;
  color: rgba(247, 243, 233, .62);
}

.footer-heading {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .22em;
  color: var(--c-gold);
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .4rem;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .15rem 0;
  color: rgba(247, 243, 233, .78);
  text-decoration: none;
  font-weight: 600;
}

.footer-link::before {
  content: "";
  width: .4rem;
  height: .4rem;
  flex: none;
  background: var(--c-gold);
  transform: skewX(-20deg);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--c-white);
  text-decoration: underline;
  text-underline-offset: .2em;
}

.contact-line {
  margin: 0 0 .35rem;
  font-size: .82rem;
  color: rgba(247, 243, 233, .74);
}

.footer-legal {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .5rem 1rem;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-family: var(--font-mono);
  font-size: .72rem;
  color: rgba(247, 243, 233, .55);
}

.footer-legal p {
  margin: 0;
}

.eyebrow {
  display: block;
  margin-bottom: .5rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .22em;
  color: var(--c-gold);
  text-transform: uppercase;
}

.section-title {
  margin-bottom: 1rem;
  font-size: clamp(1.9rem, 3.6vw, 3.3rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: .02em;
  color: var(--c-ink);
}

.lede {
  max-width: 42rem;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--c-gray);
}

.page-intro {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .6fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: end;
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
  padding-bottom: clamp(2rem, 5vw, 4rem);
  border-bottom: 1px solid rgba(11, 61, 46, .14);
}

.page-intro::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 4rem;
  height: 4px;
  background: var(--c-gold);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0 0 clamp(1.5rem, 3vw, 2.5rem);
  padding: 0;
  list-style: none;
  font-size: .85rem;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: .5rem;
  color: var(--c-light-green);
}

.breadcrumbs li+li::before {
  content: "/";
  font-family: var(--font-mono);
  color: var(--c-gold);
}

.breadcrumbs a {
  color: var(--c-green);
  text-decoration: none;
  font-weight: 600;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

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

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

.card {
  position: relative;
  padding: clamp(1.25rem, 2.5vw, 2rem);
  background: var(--c-white);
  border: 1px solid rgba(11, 61, 46, .12);
  border-left: 4px solid var(--c-green);
  box-shadow: 0 1px 2px rgba(0, 0, 0, .04);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(11, 61, 46, .08);
}

.card-full {
  background: var(--c-ink);
  color: var(--c-paper);
  border-left-color: var(--c-gold);
}

.notch-card {
  overflow: hidden;
}

.notch-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-top: 1.5rem solid var(--c-gold);
  border-left: 1.5rem solid transparent;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .8rem 1.5rem;
  background: var(--c-green);
  border: 2px solid var(--c-green);
  color: var(--c-paper);
  font-weight: 700;
  font-size: .95rem;
  line-height: 1;
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(11, 61, 46, .15);
  transition: background .2s, box-shadow .2s, color .2s;
}

.btn:hover,
.btn:focus-visible {
  background: transparent;
  color: var(--c-green);
  box-shadow: 2px 2px 0 rgba(201, 162, 39, .4);
}

.btn--gold {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-green);
  box-shadow: 4px 4px 0 rgba(201, 162, 39, .25);
}

.btn--gold:hover,
.btn--gold:focus-visible {
  background: transparent;
  color: var(--c-gold);
}

.btn--ghost {
  background: transparent;
  border-color: var(--c-green);
  color: var(--c-green);
  box-shadow: none;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: var(--c-green);
  color: var(--c-paper);
  box-shadow: none;
}

.btn--sm {
  padding: .5rem .9rem;
  font-size: .82rem;
  box-shadow: 2px 2px 0 rgba(11, 61, 46, .15);
}

.btn--block {
  display: flex;
  width: 100%;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .28rem .7rem;
  background: rgba(30, 107, 80, .12);
  border-left: 2px solid var(--c-gold);
  color: var(--c-green);
  font-size: .78rem;
  font-weight: 700;
}

.chip--gold {
  background: rgba(201, 162, 39, .14);
  color: var(--c-ink);
}

.stat-board {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  background: var(--c-ink);
  border-left: 6px solid var(--c-gold);
  color: var(--c-paper);
}

.stat-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 3.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
}

.stat-label {
  margin: .15rem 0 0;
  font-size: .8rem;
  letter-spacing: .12em;
  color: rgba(247, 243, 233, .7);
  text-transform: uppercase;
}

.table-wrap {
  position: relative;
  overflow-x: auto;
  background: var(--c-white);
  border: 1px solid rgba(11, 61, 46, .16);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}

.data-table caption {
  padding: .9rem 1rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--c-green);
  text-transform: uppercase;
}

.data-table th,
.data-table td {
  padding: .75rem 1rem;
  border-bottom: 1px solid rgba(11, 61, 46, .1);
  text-align: left;
}

.data-table th {
  background: var(--c-green);
  color: var(--c-paper);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
}

.data-table tbody tr:hover {
  background: rgba(201, 162, 39, .08);
}

.acc {
  background: var(--c-white);
  border: 1px solid rgba(11, 61, 46, .12);
  border-left: 4px solid var(--c-gold);
}

.acc+.acc {
  margin-top: .75rem;
}

.acc-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: 100%;
  padding: 1rem 1.25rem;
  text-align: left;
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-ink);
  background: rgba(255, 255, 255, .5);
}

.acc-head::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--c-gold);
  transition: transform .2s var(--ease);
}

.acc[data-open] .acc-head::after {
  transform: rotate(45deg);
}

.acc-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .3s var(--ease);
}

.acc[data-open] .acc-panel {
  grid-template-rows: 1fr;
}

.acc-inner {
  overflow: hidden;
  min-height: 0;
  padding: 0 1.25rem;
}

.acc[data-open] .acc-inner {
  padding-top: .25rem;
  padding-bottom: 1.25rem;
}

.media-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  min-height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--c-green) 0%, var(--c-light-green) 100%);
  border: 1px solid rgba(11, 61, 46, .2);
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 40%;
  background: repeating-linear-gradient(45deg, rgba(255, 255, 255, .07) 0 10px, transparent 10px 20px);
  mix-blend-mode: overlay;
}

.media-frame::after {
  content: "影像坐标";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  color: rgba(255, 255, 255, .75);
  text-transform: uppercase;
  background: linear-gradient(to top, rgba(0, 0, 0, .2), transparent 60%);
}

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

.media-frame--wide {
  aspect-ratio: 21 / 9;
}

.blockquote {
  margin: 2rem 0;
  padding: 1rem 1.5rem;
  background: var(--c-white);
  border-left: 5px solid var(--c-gold);
  font-weight: 600;
}

.blockquote cite {
  display: block;
  margin-top: .5rem;
  font-style: normal;
  font-size: .8rem;
  font-weight: 400;
  color: var(--c-gray);
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(1.1rem);
  transition: opacity .35s var(--ease), transform .35s var(--ease);
  transition-delay: var(--reveal-delay, 0s);
}

html.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 60rem) {
  body {
    padding-left: 0;
  }

  .site-main {
    padding: 2rem var(--side-pad) 3rem;
  }

  .page-progress {
    top: 0;
    right: auto;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, .12);
  }

  .page-progress-thumb {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--c-gold), var(--c-gold-light));
    transform: scaleX(0);
    transform-origin: left;
  }

  .site-header {
    position: sticky;
    top: 0;
    width: 100%;
    height: auto;
    min-height: 4.5rem;
    padding: 0;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    border-right: 0;
    border-bottom: 4px solid var(--c-gold);
  }

  .site-header::before,
  .site-header::after {
    display: none;
  }

  .header-rail {
    position: fixed;
    top: 4.5rem;
    left: 0;
    right: 0;
    bottom: auto;
    width: 100%;
    max-height: calc(100dvh - 4.5rem);
    padding: 1.5rem 1.25rem 2rem;
    overflow-y: auto;
    background: var(--c-green);
    box-shadow: 0 12px 32px rgba(0, 0, 0, .24);
    transform: translateY(-.6rem);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
  }

  .site-header[data-open] .header-rail {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .35rem;
    z-index: 101;
    min-width: 3.5rem;
    height: 3.5rem;
    margin-right: .75rem;
    padding: .5rem;
    color: var(--c-white);
  }

  .toggle-bar {
    display: block;
    width: 1.4rem;
    height: 2px;
    background: var(--c-gold-light);
    transition: transform .18s var(--ease), opacity .18s;
  }

  .toggle-text {
    display: block;
    margin-top: .12rem;
    font-family: var(--font-mono);
    font-size: .55rem;
    letter-spacing: .1em;
    color: rgba(247, 243, 233, .8);
    text-transform: uppercase;
  }

  .site-header[data-open] .toggle-bar:nth-child(1) {
    transform: translateY(.47rem) rotate(45deg);
  }

  .site-header[data-open] .toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .site-header[data-open] .toggle-bar:nth-child(3) {
    transform: translateY(-.47rem) rotate(-45deg);
  }

  .brand-block {
    flex: 1;
    margin: 0 0 0 1rem;
    padding: 0;
    border-bottom: 0;
    text-align: left;
  }

  .brand-masthead {
    font-size: 1.15rem;
  }

  .brand-tagline {
    display: none;
  }

  .site-nav {
    flex: 0 0 auto;
  }

  .nav-list {
    gap: .2rem;
  }

  .nav-link {
    padding: .8rem .6rem;
    font-size: 1rem;
  }

  .header-status {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, .14);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-legal {
    grid-column: auto;
  }

  .page-intro {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 48rem) {
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

  html.js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}