:root {
  --ink: #07130F;
  --ink-2: #0E241C;
  --pitch: #14352A;
  --lime: #C8FF3D;
  --orange: #FF8A3D;
  --fog: #E8EDE9;
  --mist: #8FA39A;
  --graphite: #3A4A44;
  --mint: #6FE7C0;
  --amber: #F4C95D;

  --rail: 236px;
  --gutter: 20px;
  --maxw: 1160px;
  --r: 2px;

  --hair: 1px solid var(--graphite);
  --ease: cubic-bezier(.22, .61, .36, 1);

  --font-display: "Arial Narrow", "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-serif: Georgia, "Songti SC", "SimSun", "Noto Serif SC", serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (min-width: 768px) {
  :root { --gutter: 32px; }
}
@media (min-width: 1024px) {
  :root { --gutter: 40px; }
}

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

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--fog);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, picture, video, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dd, dt, p, figure, blockquote, h1, h2, h3, h4, h5, h6 { margin: 0; }
table { border-collapse: collapse; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  font-stretch: semi-condensed;
  line-height: 1.08;
  letter-spacing: -.015em;
  color: var(--fog);
}
h1 { font-size: clamp(2rem, 5.4vw, 3.5rem); }
h2 { font-size: clamp(1.4rem, 2.8vw, 2rem); }
h3 { font-size: 1.125rem; letter-spacing: 0; line-height: 1.35; }
h4 { font-size: 1rem; letter-spacing: .01em; line-height: 1.4; }

p { line-height: 1.7; }
strong, b { font-weight: 700; color: var(--fog); }
small { font-size: 12.5px; color: var(--mist); }

::selection { background: var(--lime); color: #08170F; }

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

/* ---------- 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid { display: grid; gap: 20px; }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid--two { grid-template-columns: minmax(0, 1fr); }
.grid--split { grid-template-columns: minmax(0, 1fr); }

@media (min-width: 860px) {
  .grid { gap: 24px; }
  .grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
}

/* ---------- 文字组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mint);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--mint);
  flex: none;
}

.num,
time,
code {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.prose {
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--fog);
}
.prose > * + * { margin-top: 1em; }
.prose h2 { margin-top: 2em; font-size: clamp(1.3rem, 2.4vw, 1.65rem); }
.prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.15em; }
.prose ul { list-style: square; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: .4em; }
.prose li::marker { color: var(--lime); }
.prose a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.prose a:hover { color: var(--lime); }
.prose blockquote {
  border-left: 2px solid var(--lime);
  padding-left: 16px;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--mist);
}
.prose hr { border: 0; border-top: var(--hair); margin: 2em 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--r);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .16s ease, color .16s ease, border-color .16s ease;
}
.btn--lime {
  background: var(--lime);
  border-color: var(--lime);
  color: #08170F;
}
.btn--lime:hover { background: #d9ff74; border-color: #d9ff74; }
.btn--ghost {
  background: transparent;
  border-color: var(--graphite);
  color: var(--fog);
}
.btn--ghost:hover { border-color: var(--lime); color: var(--lime); }
.btn--quiet {
  background: var(--pitch);
  border-color: var(--pitch);
  color: var(--fog);
}
.btn--quiet:hover { border-color: var(--mint); color: var(--mint); }

/* ---------- 标签 / 状态 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border: 1px solid var(--graphite);
  border-radius: var(--r);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1.2;
  white-space: nowrap;
  color: var(--fog);
  text-decoration: none;
  transition: color .16s ease, border-color .16s ease, background-color .16s ease;
}
.chip:hover { border-color: var(--lime); color: var(--lime); }
.chip--lime {
  background: var(--lime);
  border-color: var(--lime);
  color: #08170F;
}
.chip--lime:hover { background: #d9ff74; border-color: #d9ff74; color: #08170F; }

.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid var(--graphite);
  border-radius: var(--r);
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  line-height: 1.4;
  color: var(--mist);
}
.status--confirmed {
  background: var(--lime);
  border-color: var(--lime);
  color: #08170F;
}
.status--pending {
  background: transparent;
  border-color: var(--orange);
  color: var(--orange);
}
.status--subscribed {
  background: transparent;
  border-color: var(--mint);
  color: var(--mint);
}

/* ---------- 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--pitch);
  border: 1px solid var(--graphite);
  border-radius: 0;
}
.media-frame > img,
.media-frame > picture,
.media-frame > picture > img,
.media-frame > svg,
.media-frame > video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.72) contrast(1.06) brightness(.94);
}
.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--3x2 { aspect-ratio: 3 / 2; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--3x4 { aspect-ratio: 3 / 4; }
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 19, 15, 0) 42%, rgba(7, 19, 15, .78) 100%);
}
.media-frame--shade-top::after {
  background: linear-gradient(0deg, rgba(7, 19, 15, 0) 42%, rgba(7, 19, 15, .78) 100%);
}
.media-frame__tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
  padding: 4px 8px;
  border-radius: var(--r);
  background: var(--lime);
  color: #08170F;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  line-height: 1.4;
}

/* ---------- 面包屑 ---------- */
.crumbs { margin: 0 0 20px; }
.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--mist);
}
.crumbs__list li { display: flex; align-items: center; }
.crumbs__list li + li::before {
  content: "/";
  padding: 0 10px;
  color: var(--graphite);
}
.crumbs__list a {
  color: var(--mist);
  text-decoration: none;
  transition: color .16s ease;
}
.crumbs__list a:hover { color: var(--lime); }
.crumbs__list [aria-current="page"] { color: var(--fog); }

/* ================= 头部 ================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink-2);
  border-bottom: var(--hair);
  color: var(--fog);
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 14px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: var(--r);
  background: var(--lime);
  color: #08170F;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: top .18s var(--ease);
}
.skip-link:focus { top: 14px; }

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 62px;
  padding: 10px var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}
.brand--stacked { align-items: flex-start; }

.brand__mark {
  width: 26px;
  height: 26px;
  flex: none;
  background: var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}
.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  line-height: 1.15;
}
.brand__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--fog);
  white-space: nowrap;
}
.brand__line {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist);
  white-space: nowrap;
}

.site-header__quick {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  flex: none;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex: none;
  border: 1px solid var(--graphite);
  border-radius: var(--r);
  color: var(--fog);
  transition: color .16s ease, border-color .16s ease;
}
.nav-toggle:hover { border-color: var(--lime); color: var(--lime); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}
.nav-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform .2s var(--ease), opacity .2s ease;
}
.nav-toggle__bars span:nth-child(1) { top: 0; }
.nav-toggle__bars span:nth-child(2) { top: 5px; }
.nav-toggle__bars span:nth-child(3) { top: 10px; }

.site-header[data-open="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* 移动端抽屉导航 */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 80;
  display: flex;
  flex-direction: column;
  width: min(84vw, 320px);
  padding: 18px var(--gutter) 24px;
  background: var(--ink-2);
  border-right: var(--hair);
  overflow-y: auto;
  transform: translateX(-104%);
  visibility: hidden;
  transition: transform .3s var(--ease), visibility 0s linear .3s;
}
.site-header[data-open="true"] .site-nav {
  transform: translateX(0);
  visibility: visible;
  transition: transform .3s var(--ease), visibility 0s linear 0s;
}

.site-nav__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: var(--hair);
}
.site-nav__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}
.nav-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex: none;
  border: 1px solid var(--graphite);
  border-radius: var(--r);
  color: var(--fog);
  font-size: 13px;
  line-height: 1;
  transition: color .16s ease, border-color .16s ease;
}
.nav-close:hover { border-color: var(--orange); color: var(--orange); }

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.site-nav__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  padding: 11px 12px;
  border-left: 2px solid transparent;
  color: var(--fog);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color .16s ease, color .16s ease, border-color .16s ease;
}
.site-nav__link:hover { background: var(--pitch); color: #fff; }
.site-nav__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--mist);
  transition: color .16s ease;
}
.site-nav__label { min-width: 0; }

.site-nav__link[aria-current="page"] {
  border-left-color: var(--lime);
  background: var(--ink);
  color: var(--lime);
}
.site-nav__link[aria-current="page"] .site-nav__num { color: var(--lime); }

.rail-meter {
  position: relative;
  width: 100%;
  height: 2px;
  flex: none;
  margin-top: 20px;
  background: var(--graphite);
  overflow: hidden;
}
.rail-meter__fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--mint), var(--lime));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .12s linear;
}

.site-nav__foot {
  margin-top: auto;
  padding-top: 18px;
  border-top: var(--hair);
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.7;
  letter-spacing: .1em;
  color: var(--mist);
}

.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(7, 19, 15, .74);
  opacity: 0;
  pointer-events: none;
  transition: opacity .24s ease;
}
.site-header[data-open="true"] .nav-scrim {
  opacity: 1;
  pointer-events: auto;
}

body.is-nav-open { overflow: hidden; }

@media (max-width: 359px) {
  .brand__line { display: none; }
  .chip { padding: 5px 7px; font-size: 11px; }
}

/* 桌面端：侧边轨道 */
@media (min-width: 1024px) {
  body { padding-left: var(--rail); }

  .skip-link { left: calc(var(--rail) + 16px); }

  .site-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail);
    display: flex;
    flex-direction: column;
    padding: 24px 18px 16px;
    background: linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 78%);
    border-bottom: 0;
    border-right: var(--hair);
    overflow-y: auto;
    overflow-x: hidden;
  }

  .site-header__bar {
    display: block;
    padding: 0 0 16px;
    min-height: 0;
    border-bottom: var(--hair);
  }

  .brand { align-items: flex-start; }
  .brand__name { font-size: 17px; }
  .brand__mark { width: 24px; height: 24px; }

  .site-header__quick {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    margin: 14px 0 0;
  }
  .chip { padding: 9px 10px; font-size: 12.5px; }

  .nav-toggle { display: none; }
  .nav-scrim { display: none; }

  .site-nav {
    position: static;
    transform: none;
    visibility: visible;
    width: auto;
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 20px 0 0;
    background: transparent;
    border: 0;
    overflow: visible;
    transition: none;
  }

  .site-nav__head {
    padding-bottom: 10px;
    margin-bottom: 10px;
  }
  .nav-close { display: none; }
  .site-nav__link { padding: 9px 10px; font-size: 14.5px; }
  .site-nav__foot { font-size: 10px; }

  body.is-nav-open { overflow: auto; }
}

/* ================= 页脚 ================= */
.site-footer {
  position: relative;
  background: var(--ink-2);
  color: var(--fog);
  border-top: var(--hair);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--lime) 0 96px, var(--graphite) 96px 100%);
}

.site-footer__inner {
  display: grid;
  gap: 40px;
  padding-block: 48px 36px;
}

.site-footer__note {
  max-width: 34ch;
  margin-top: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}
.site-footer__cta { margin-top: 18px; }

.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 28px 20px;
}

.site-footer__title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  line-height: 1.4;
  color: var(--lime);
}

.site-footer__list { display: grid; gap: 9px; }
.site-footer__list a {
  display: inline-block;
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  font-size: 14px;
  color: var(--fog);
  text-decoration: none;
  transition: color .16s ease, border-color .16s ease;
}
.site-footer__list a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.contact-list { display: grid; gap: 10px; }
.contact-list__row { display: grid; gap: 2px; }
.contact-list__row dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}
.contact-list__row dd {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--fog);
  word-break: break-word;
}
.site-footer__contact-note {
  margin-top: 14px;
  padding-left: 10px;
  border-left: 2px solid var(--graphite);
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist);
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  padding-block: 16px 28px;
  border-top: var(--hair);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--mist);
}
.site-footer__copy { margin-right: auto; }
.site-footer__legal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.site-footer__legal-list a {
  color: var(--mist);
  text-decoration: none;
  transition: color .16s ease;
}
.site-footer__legal-list a:hover { color: var(--lime); }
.site-footer__icp { color: var(--mist); }

@media (min-width: 860px) {
  .site-footer__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    padding-block: 56px 40px;
  }
}

/* ================= 显现动画 ================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .4s var(--ease), transform .4s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-reveal {
  opacity: 1;
  transform: none;
}

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

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .rail-meter__fill { transition: none !important; }
  .site-nav,
  .site-header[data-open="true"] .site-nav { transition: none !important; }
}