:root {
  --night: #061B16;
  --panel: #0B2C24;
  --rail: #123F33;
  --edge: #1F5A49;
  --pulse: #2AF5B0;
  --pulse-soft: #9BFFD9;
  --flare: #FF5B2E;
  --amber: #FFB347;
  --fog: #DCE8E2;
  --mute: #7E9A90;
  --ink: #050F0C;

  --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  --font-serif: "Songti SC", "SimSun", Georgia, "Times New Roman", serif;

  --wrap: 1280px;
  --gutter: clamp(1rem, 3vw, 2.5rem);
  --cut: 22px;
  --dur: 220ms;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--night);
  background-image: radial-gradient(120% 70% at 50% -10%, rgba(42, 245, 176, 0.07), transparent 62%);
  background-repeat: no-repeat;
  color: var(--fog);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--pulse);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}

button { font: inherit; }

ul,
ol { padding-left: 1.15em; }

h1,
h2,
h3,
h4 {
  margin: 0 0 0.6em;
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--fog);
  letter-spacing: -0.02em;
  line-height: 1.06;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 5.2rem);
  letter-spacing: -0.04em;
  line-height: 0.95;
}

h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; }

[id] { scroll-margin-top: 1.5rem; }

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

/* ---------- 基础工具类 ---------- */

.wrap {
  width: min(var(--wrap), calc(100% - (var(--gutter) * 2)));
  margin-inline: auto;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.mono {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.06em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pulse);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--pulse);
  flex: none;
}

.label-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.28rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pulse-soft);
  background: rgba(42, 245, 176, 0.07);
  border: 1px solid var(--edge);
  line-height: 1.4;
}

.stack {
  display: grid;
  gap: var(--stack-gap, 1.25rem);
}

.prose {
  max-width: 68ch;
}

.prose h2 { margin-top: 2em; }
.prose h3 { margin-top: 1.6em; }
.prose p { margin: 0 0 1.15em; }
.prose ul,
.prose ol { margin: 0 0 1.2em; padding-left: 1.25em; }
.prose li { margin-bottom: 0.45em; }
.prose a { color: var(--pulse); }
.prose strong { color: #FFFFFF; }

/* ---------- 链接扫光 ---------- */

.link-sweep {
  display: inline-block;
  color: var(--pulse-soft);
  text-decoration: none;
  padding-bottom: 2px;
  background-image: linear-gradient(var(--pulse), var(--pulse));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 2px;
  transition: background-size var(--dur) ease, color 180ms ease;
}

.link-sweep:hover,
.link-sweep:focus-visible {
  color: var(--pulse);
  background-size: 100% 2px;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease;
}

.btn--pulse {
  background: var(--pulse);
  color: #04120E;
}

.btn--pulse:hover,
.btn--pulse:focus-visible {
  background: var(--pulse-soft);
  color: #04120E;
}

.btn--ghost {
  background: transparent;
  color: var(--fog);
  border-color: var(--edge);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--pulse);
  border-color: var(--pulse);
}

/* ---------- 斜切面板 ---------- */

.panel {
  position: relative;
  padding: clamp(1.15rem, 2.2vw, 1.9rem);
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--edge);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.track-divider {
  position: relative;
  height: 2px;
  margin: clamp(2rem, 4vw, 3.5rem) 0;
  border: 0;
  background: repeating-linear-gradient(90deg, var(--edge) 0 18px, transparent 18px 28px);
  overflow: hidden;
}

.track-divider::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 32%;
  background: linear-gradient(90deg, var(--pulse), transparent);
}

/* ---------- 网格 ---------- */

.layout-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1.25rem, 2.4vw, 2.5rem);
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* ---------- 面包屑 ---------- */

.breadcrumbs {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs__list li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--edge);
}

.breadcrumbs__list a {
  color: var(--mute);
  text-decoration: none;
  transition: color 180ms ease;
}

.breadcrumbs__list a:hover,
.breadcrumbs__list a:focus-visible { color: var(--pulse); }

/* ---------- 图片容器 ---------- */

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--edge);
  background-color: var(--rail);
  background-image:
    repeating-linear-gradient(135deg, rgba(42, 245, 176, 0.07) 0 2px, transparent 2px 9px),
    linear-gradient(155deg, var(--panel), var(--night));
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 0.45rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--pulse-soft);
  background: rgba(5, 15, 12, 0.8);
  border-top: 1px solid var(--edge);
}

/* ---------- 数据表 ---------- */

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--edge);
  background: var(--panel);
}

.table-scroll::-webkit-scrollbar { height: 8px; }
.table-scroll::-webkit-scrollbar-track { background: var(--ink); }
.table-scroll::-webkit-scrollbar-thumb { background: var(--edge); }

.data-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 0.875rem;
  line-height: 1.5;
}

.data-table th {
  padding: 0.65rem 0.85rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
  border-bottom: 1px solid var(--edge);
  white-space: nowrap;
}

.data-table td {
  padding: 0.72rem 0.85rem;
  border-bottom: 1px solid rgba(31, 90, 73, 0.45);
  color: var(--fog);
  vertical-align: top;
}

.data-table tbody tr:last-child td { border-bottom: 0; }

.data-table tbody tr:hover td:first-child {
  box-shadow: inset 3px 0 0 var(--pulse);
}

.data-table .mono { color: var(--pulse); }

/* ---------- 折叠卡 ---------- */

.accordion {
  border-top: 1px solid var(--edge);
}

.accordion__item {
  border-bottom: 1px solid var(--edge);
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1rem 0.5rem;
  background: none;
  border: 0;
  color: var(--fog);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.01em;
  text-align: left;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease;
}

.accordion__trigger:hover,
.accordion__trigger:focus-visible {
  color: var(--pulse);
  background: rgba(42, 245, 176, 0.04);
}

.accordion__trigger::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--pulse);
  flex: none;
}

.accordion__trigger[aria-expanded="true"]::after { content: "\2212"; }

.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur) ease;
}

.accordion__panel[data-open="true"] { grid-template-rows: 1fr; }

.accordion__inner {
  overflow: hidden;
  padding-inline: 0.5rem;
  font-size: 0.9375rem;
  color: var(--fog);
}

.accordion__panel[data-open="true"] .accordion__inner { padding-bottom: 1.1rem; }

.accordion__inner > *:first-child { margin-top: 0; }
.accordion__inner > *:last-child { margin-bottom: 0; }

/* ---------- 头部 ---------- */

.site-header {
  position: relative;
  z-index: 40;
  background: var(--night);
  border-bottom: 1px solid var(--edge);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 200;
  padding: 0.6rem 1rem;
  background: var(--pulse);
  color: #04120E;
  font-weight: 800;
  text-decoration: none;
  transition: top 180ms ease;
}

.skip-link:focus {
  top: 0.75rem;
}

.status-bar {
  background-image:
    linear-gradient(90deg, rgba(42, 245, 176, 0.12), rgba(255, 91, 46, 0.08) 55%, transparent 100%);
  border-bottom: 1px solid rgba(31, 90, 73, 0.6);
}

.status-bar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem 1.25rem;
  padding-block: 0.5rem;
}

.status-bar__text {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--fog);
}

.status-bar__tag {
  padding: 0.1rem 0.42rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--night);
  background: var(--flare);
  white-space: nowrap;
}

.status-bar__dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--pulse);
  animation: pulse-dot 2.8s ease-out infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(42, 245, 176, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(42, 245, 176, 0); }
  100% { box-shadow: 0 0 0 0 rgba(42, 245, 176, 0); }
}

.status-bar__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.5;
}

.masthead {
  background-image: repeating-linear-gradient(90deg, rgba(31, 90, 73, 0.12) 0 1px, transparent 1px 96px);
}

.masthead__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 1rem;
  padding-block: 1.05rem;
}

.masthead__aside {
  grid-column: 1;
  justify-self: start;
  padding: 0.32rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--mute);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.masthead__aside--end {
  grid-column: 3;
  justify-self: end;
}

.masthead__aside:hover,
.masthead__aside:focus-visible {
  color: var(--pulse);
  border-color: var(--edge);
}

.brand {
  grid-column: 2;
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--fog);
  text-decoration: none;
}

.brand__mark {
  width: 34px;
  height: 34px;
  flex: none;
  background: linear-gradient(140deg, var(--pulse) 0%, var(--pulse-soft) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 58%, 58% 100%, 0 100%);
  transition: filter 200ms ease;
}

.brand:hover .brand__mark,
.brand:focus-visible .brand__mark {
  filter: brightness(1.16) saturate(1.2);
}

.brand__type {
  display: grid;
  gap: 0.12rem;
}

.brand__text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  line-height: 1;
  color: var(--fog);
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.34em;
  line-height: 1;
  color: var(--mute);
}

.brand--footer {
  grid-column: auto;
  justify-self: start;
}

.nav-toggle {
  display: none;
  grid-column: 3;
  justify-self: end;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.65rem;
  background: transparent;
  border: 1px solid var(--edge);
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  color: var(--pulse);
  border-color: var(--pulse);
}

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 200ms ease, opacity 200ms ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.site-nav {
  border-top: 1px solid rgba(31, 90, 73, 0.55);
  background: rgba(11, 44, 36, 0.6);
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem clamp(0.75rem, 2vw, 2rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__list a {
  position: relative;
  display: inline-block;
  padding: 0.8rem 0.25rem 0.95rem;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--fog);
  text-decoration: none;
  transition: color 180ms ease;
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--pulse);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) ease;
}

.site-nav__list a:hover,
.site-nav__list a:focus-visible { color: var(--pulse-soft); }

.site-nav__list a:hover::after,
.site-nav__list a:focus-visible::after { transform: scaleX(1); }

.site-nav__list a[aria-current="page"] {
  color: var(--pulse);
  font-weight: 800;
}

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

.progress-rail {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  height: 3px;
  background: rgba(31, 90, 73, 0.35);
  pointer-events: none;
}

.progress-rail__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--pulse), var(--flare));
}

/* ---------- 页脚 ---------- */

.site-footer {
  margin-top: clamp(3rem, 6vw, 5.5rem);
  background: var(--ink);
  border-top: 1px solid var(--edge);
}

.footer-track {
  height: 6px;
  background-color: var(--rail);
  background-image:
    linear-gradient(90deg, var(--pulse) 0 34%, transparent 34%),
    linear-gradient(90deg, transparent 46%, var(--flare) 46% 54%, transparent 54%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(220px, 1.25fr) minmax(0, 2fr);
  gap: clamp(2rem, 5vw, 4rem);
  padding-block: clamp(2rem, 4vw, 3.25rem);
}

.site-footer__brand {
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.site-footer__summary {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mute);
  max-width: 30ch;
}

.site-footer__meta {
  margin: 0;
  padding-top: 0.7rem;
  border-top: 1px solid rgba(31, 90, 73, 0.6);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--edge);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
}

.footer-col__title {
  margin: 0 0 0.85rem;
  padding-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--mute);
  border-bottom: 1px solid var(--edge);
}

.footer-col__list {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-col__list a {
  font-size: 0.875rem;
  line-height: 1.6;
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem 1.5rem;
  padding-block: 1.1rem 1.75rem;
  border-top: 1px solid rgba(31, 90, 73, 0.55);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--mute);
}

.site-footer__base p { margin: 0; }

.site-footer__legal { color: var(--edge); }

/* ---------- 响应式 ---------- */

@media (max-width: 1100px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
  }
  .site-footer__summary { max-width: 46ch; }
}

@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; }

  .masthead__aside { display: none; }

  .site-nav {
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    border-top-width: 0;
    transition: max-height 260ms ease, visibility 0s linear 260ms;
  }

  .site-nav[data-open="true"] {
    max-height: min(70vh, 520px);
    overflow-y: auto;
    visibility: visible;
    border-top-width: 1px;
    transition: max-height 260ms ease, visibility 0s;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 0.25rem 0.75rem;
  }

  .site-nav__list li { border-bottom: 1px solid rgba(31, 90, 73, 0.45); }
  .site-nav__list li:last-child { border-bottom: 0; }

  .site-nav__list a {
    display: block;
    padding: 0.85rem 0.3rem;
  }

  .site-nav__list a::after {
    right: auto;
    width: 44px;
    bottom: 4px;
  }
}

@media (max-width: 980px) {
  .span-3,
  .span-4,
  .span-6,
  .span-9 { grid-column: span 12; }
}

@media (max-width: 720px) {
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .status-bar__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .status-bar__text { font-size: 0.75rem; }

  .status-bar__links { gap: 0.85rem; font-size: 0.75rem; }

  .masthead__inner { padding-block: 0.85rem; gap: 0.5rem; }

  .brand__mark { width: 26px; height: 26px; }

  .brand__text { font-size: 1.15rem; letter-spacing: 0.08em; }

  .brand__sub { font-size: 0.5625rem; letter-spacing: 0.24em; }

  .site-footer__base {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }
}

@media (max-width: 560px) {
  .footer-nav { grid-template-columns: 1fr; }
  .nav-toggle__label { display: none; }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .status-bar__dot { animation: none; }
  .link-sweep { background-size: 100% 2px; }
}