:root {
  --gd-ink: #121212;
  --gd-coal: #1B1A18;
  --gd-bronze: #3A352C;
  --gd-gold: #C9A227;
  --gd-gold-lift: #E8C766;
  --gd-gold-deep: #8C6F1E;
  --gd-cinnabar: #B33A2B;
  --gd-cinnabar-deep: #7A241B;
  --gd-paper: #F5EFE1;
  --gd-paper-gray: #D8CFBE;
  --gd-mist: #A9A092;
  --gd-shell: 1440px;
  --gd-gutter: clamp(20px, 5vw, 72px);
  --gd-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --gd-font-display: "思源宋体 Heavy", "Source Han Serif SC", "Noto Serif SC", "方正小标宋简体", "Songti SC", serif;
  --gd-font-body: "思源黑体", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --gd-font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body,
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%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
hr { border: 0; }
[hidden] { display: none !important; }

body {
  min-height: 100%;
  font-family: var(--gd-font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--gd-paper);
  background-color: var(--gd-ink);
  background-image:
    radial-gradient(120% 76% at 14% -12%, rgba(201, 162, 39, 0.11), transparent 62%),
    repeating-linear-gradient(90deg, rgba(201, 162, 39, 0.035) 0 1px, transparent 1px 8px);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

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

/* ---------- 跳过链接 ---------- */
.gd-skip {
  position: fixed;
  top: 12px;
  left: 50%;
  z-index: 300;
  padding: 10px 20px;
  transform: translate(-50%, -180%);
  background: var(--gd-gold);
  color: #17130a;
  font-size: 14px;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transition: transform 200ms var(--gd-ease);
}
.gd-skip:focus,
.gd-skip:focus-visible {
  transform: translate(-50%, 0);
  outline-offset: 2px;
}

/* ---------- 页头框架 ---------- */
.gd-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(18, 18, 18, 0.95);
  border-bottom: 1px solid var(--gd-bronze);
  color: var(--gd-paper);
  -webkit-backdrop-filter: blur(10px) saturate(1.08);
  backdrop-filter: blur(10px) saturate(1.08);
}

.gd-header::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 162, 39, 0.85) 30%, rgba(232, 199, 102, 0.55) 58%, transparent);
  pointer-events: none;
}

.gd-header::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gd-gold), var(--gd-gold-deep) 62%, transparent);
  opacity: 0.85;
  pointer-events: none;
}

.gd-header-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 34px);
  width: 100%;
  max-width: var(--gd-shell);
  min-height: 76px;
  margin: 0 auto;
  padding: 10px var(--gd-gutter);
}

/* 品牌 */
.gd-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 4px 0;
}

.gd-brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(158deg, var(--gd-gold-lift), var(--gd-gold) 46%, var(--gd-gold-deep));
  color: #17130a;
  clip-path: polygon(50% 0, 100% 22%, 100% 78%, 50% 100%, 0 78%, 0 22%);
  transition: filter 200ms var(--gd-ease);
}
.gd-brand:hover .gd-brand-mark { filter: brightness(1.1); }

.gd-brand-ding {
  font-family: var(--gd-font-display);
  font-size: 19px;
  font-weight: 900;
  line-height: 1;
}

.gd-brand-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.gd-brand-name {
  font-family: var(--gd-font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 0.07em;
  line-height: 1.1;
  color: var(--gd-paper);
}

.gd-brand-sub {
  font-family: var(--gd-font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  line-height: 1;
  color: var(--gd-mist);
  text-transform: uppercase;
}

/* 导航 */
.gd-nav { margin-left: auto; }

.gd-nav-list {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.5vw, 24px);
}

.gd-nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 2px;
  font-size: 14px;
  letter-spacing: 0.045em;
  color: var(--gd-paper-gray);
  transition: color 160ms var(--gd-ease);
}

.gd-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  height: 2px;
  background: var(--gd-gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 240ms var(--gd-ease), background-color 160ms linear;
}

.gd-nav-link:hover,
.gd-nav-link:focus-visible { color: var(--gd-gold-lift); }

.gd-nav-link:hover::after,
.gd-nav-link:focus-visible::after { transform: scaleX(1); }

.gd-nav-link[aria-current="page"] {
  color: var(--gd-gold-lift);
  font-weight: 600;
}

.gd-nav-link[aria-current="page"]::after {
  background: var(--gd-cinnabar);
  transform: scaleX(1);
}

/* 页头行动 */
.gd-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.gd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: 13.5px;
  letter-spacing: 0.06em;
  line-height: 1;
  white-space: nowrap;
  border: 1px solid transparent;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: background-color 160ms var(--gd-ease), border-color 160ms var(--gd-ease), color 160ms var(--gd-ease), filter 160ms var(--gd-ease);
}

.gd-btn-solid {
  background: linear-gradient(150deg, var(--gd-gold-lift), var(--gd-gold) 56%, var(--gd-gold-deep));
  color: #17130a;
  font-weight: 600;
}
.gd-btn-solid:hover { filter: brightness(1.08); }

.gd-btn-ghost {
  border-color: var(--gd-bronze);
  background: rgba(245, 239, 225, 0.03);
  color: var(--gd-paper);
}
.gd-btn-ghost:hover {
  border-color: var(--gd-gold-deep);
  color: var(--gd-gold-lift);
}

.gd-btn:focus-visible {
  outline: 2px solid var(--gd-gold-lift);
  outline-offset: 3px;
  box-shadow: inset 0 0 0 2px rgba(232, 199, 102, 0.85);
}

/* 移动目录按钮 */
.gd-nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 9px 12px;
  border: 1px solid var(--gd-bronze);
  color: var(--gd-paper);
  font-family: var(--gd-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: border-color 160ms var(--gd-ease), color 160ms var(--gd-ease);
}
.gd-nav-toggle:hover,
.gd-nav-toggle:focus-visible {
  border-color: var(--gd-gold-deep);
  color: var(--gd-gold-lift);
}

.gd-nav-toggle-lines {
  display: grid;
  gap: 4px;
  width: 16px;
}
.gd-nav-toggle-lines span {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform 240ms var(--gd-ease), opacity 160ms linear;
}
.gd-header[data-open] .gd-nav-toggle-lines span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.gd-header[data-open] .gd-nav-toggle-lines span:nth-child(2) { opacity: 0; }
.gd-header[data-open] .gd-nav-toggle-lines span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.gd-nav-toggle-text { line-height: 1; }

/* 滚动进度 */
.gd-scroll-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(58, 53, 44, 0.85);
  overflow: hidden;
  pointer-events: none;
}
.gd-scroll-meter-fill {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--gd-gold-deep), var(--gd-gold) 55%, var(--gd-cinnabar));
}

/* ---------- 页脚 ---------- */
.gd-footer {
  position: relative;
  background: var(--gd-coal);
  border-top: 1px solid var(--gd-bronze);
  color: var(--gd-paper);
}

.gd-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gd-gold-deep) 24%, var(--gd-cinnabar) 62%, transparent);
  opacity: 0.9;
  pointer-events: none;
}

.gd-footer-inner {
  width: 100%;
  max-width: var(--gd-shell);
  margin: 0 auto;
  padding: clamp(38px, 5.5vw, 68px) var(--gd-gutter) 0;
}

.gd-footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1.2fr;
  gap: clamp(24px, 4vw, 52px);
  padding-bottom: clamp(26px, 4vw, 46px);
}

.gd-footer-brand-line {
  font-family: var(--gd-font-display);
  font-size: clamp(19px, 2vw, 23px);
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--gd-paper);
}

.gd-footer-brand-note {
  margin-top: 12px;
  max-width: 32ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--gd-mist);
}

.gd-footer-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 16px;
  font-family: var(--gd-font-mono);
  font-size: 11px;
  letter-spacing: 0.13em;
  color: var(--gd-mist);
}
.gd-footer-status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gd-cinnabar);
  box-shadow: 0 0 0 3px rgba(179, 58, 43, 0.18);
}

.gd-footer-col-title {
  font-family: var(--gd-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gd-gold);
  margin-bottom: 16px;
}

.gd-footer-links {
  display: grid;
  gap: 9px;
}

.gd-footer-link {
  display: inline-block;
  font-size: 14px;
  color: var(--gd-paper-gray);
  transition: color 160ms var(--gd-ease), transform 160ms var(--gd-ease);
}
.gd-footer-link:hover,
.gd-footer-link:focus-visible {
  color: var(--gd-gold-lift);
  transform: translateX(3px);
}

.gd-footer-contact {
  display: grid;
  gap: 9px;
  font-size: 13.5px;
  color: var(--gd-paper-gray);
}

.gd-footer-mail {
  font-family: var(--gd-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.01em;
  color: var(--gd-gold-lift);
  word-break: break-all;
}

.gd-footer-tel {
  font-family: var(--gd-font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gd-paper);
}

.gd-footer-hours {
  font-family: var(--gd-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--gd-mist);
}

.gd-footer-addr {
  font-size: 13px;
  line-height: 1.7;
  color: var(--gd-mist);
}

.gd-footer-note {
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid rgba(58, 53, 44, 0.9);
  font-size: 12px;
  line-height: 1.7;
  color: var(--gd-mist);
}

.gd-footer-divider {
  height: 1px;
  background: linear-gradient(90deg, var(--gd-bronze), rgba(58, 53, 44, 0.35) 70%, transparent);
}

.gd-footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 16px 0 22px;
  font-family: var(--gd-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.07em;
  color: var(--gd-mist);
}

.gd-footer-icp { color: var(--gd-paper-gray); }
.gd-footer-copy { color: var(--gd-mist); }

/* ---------- 通用排版与容器 ---------- */
.gd-shell {
  width: 100%;
  max-width: var(--gd-shell);
  margin-inline: auto;
  padding-inline: var(--gd-gutter);
}

.gd-section {
  padding-block: clamp(40px, 6vw, 88px);
}

.gd-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--gd-font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gd-gold);
}
.gd-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}

.gd-annotation {
  font-family: var(--gd-font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.32em;
  line-height: 1.4;
  color: var(--gd-mist);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.gd-display {
  font-family: var(--gd-font-display);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: var(--gd-paper);
}

.gd-h1 { font-size: clamp(38px, 6.4vw, 84px); }
.gd-h2 { font-size: clamp(26px, 3.4vw, 44px); }
.gd-h3 { font-size: clamp(19px, 1.9vw, 24px); letter-spacing: 0.02em; }

.gd-lede {
  max-width: 56ch;
  font-size: clamp(15px, 1.25vw, 18px);
  line-height: 1.85;
  color: var(--gd-paper-gray);
}

.gd-prose {
  max-width: 68ch;
  color: var(--gd-paper-gray);
}
.gd-prose p { margin-bottom: 1.1em; line-height: 1.9; }
.gd-prose p:last-child { margin-bottom: 0; }

.gd-rule {
  height: 1px;
  background: linear-gradient(90deg, var(--gd-bronze), rgba(58, 53, 44, 0.2) 72%, transparent);
}

.gd-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 18px;
  font-family: var(--gd-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--gd-mist);
}
.gd-crumbs a { color: var(--gd-mist); transition: color 160ms var(--gd-ease); }
.gd-crumbs a:hover,
.gd-crumbs a:focus-visible { color: var(--gd-gold-lift); }
.gd-crumbs-sep { color: var(--gd-gold-deep); }
.gd-crumbs-current { color: var(--gd-paper-gray); }

/* ---------- 网格 ---------- */
.gd-grid {
  display: grid;
  gap: clamp(16px, 2vw, 24px);
}
.gd-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.gd-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gd-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 切角面板 ---------- */
.gd-panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 30px);
  background:
    linear-gradient(155deg, rgba(58, 53, 44, 0.42), rgba(27, 26, 24, 0.97) 64%);
  border: 1px solid var(--gd-bronze);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}
.gd-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 2px;
  background: var(--gd-gold);
  pointer-events: none;
}

/* ---------- 标签与状态 ---------- */
.gd-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--gd-bronze);
  border-radius: 2px;
  background: rgba(245, 239, 225, 0.04);
  font-family: var(--gd-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  line-height: 1.5;
  color: var(--gd-paper-gray);
}

.gd-tag--live {
  border-color: var(--gd-gold-deep);
  color: var(--gd-gold-lift);
}
.gd-tag--live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gd-cinnabar);
  box-shadow: 0 0 0 3px rgba(179, 58, 43, 0.16);
  animation: gd-pulse 2.6s ease-in-out infinite;
}

@keyframes gd-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.86); }
}

/* ---------- 图片容器（页面阶段放占位或图片） ---------- */
.gd-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--gd-bronze);
  background: linear-gradient(160deg, #262016, #15130f 58%, #1d1a14);
}
.gd-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72) sepia(0.18) contrast(1.05) brightness(0.92);
  transition: transform 420ms var(--gd-ease), filter 420ms var(--gd-ease);
}
.gd-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(72% 62% at 28% 18%, rgba(232, 199, 102, 0.16), transparent 70%),
    linear-gradient(180deg, transparent 52%, rgba(18, 18, 18, 0.78));
}
.gd-media:hover img { transform: scale(1.03); filter: saturate(0.82) sepia(0.14) contrast(1.06) brightness(0.98); }

.gd-media--wide { aspect-ratio: 21 / 9; }
.gd-media--tall { aspect-ratio: 3 / 4; }
.gd-media--square { aspect-ratio: 1 / 1; }

.gd-media-caption {
  margin-top: 10px;
  font-family: var(--gd-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--gd-mist);
}

/* ---------- 显现 ---------- */
html.gd-js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 420ms var(--gd-ease), transform 420ms var(--gd-ease);
}
html.gd-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) and (min-width: 981px) {
  .gd-brand-sub { display: none; }
  .gd-nav-link { font-size: 13px; }
  .gd-header-actions .gd-btn { padding: 10px 14px; font-size: 12.5px; }
}

@media (max-width: 980px) {
  .gd-header-inner { min-height: 66px; gap: 12px; }

  .gd-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 50;
    width: min(340px, 86vw);
    margin-left: 0;
    padding: 92px 26px 32px;
    background: #15130f;
    border-left: 1px solid var(--gd-bronze);
    box-shadow: -18px 0 48px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
    transform: translateX(104%);
    opacity: 0;
    visibility: hidden;
    transition: transform 260ms var(--gd-ease), opacity 220ms var(--gd-ease), visibility 260ms linear;
  }

  .gd-header[data-open] .gd-nav {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .gd-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .gd-nav-link {
    display: block;
    padding: 15px 4px;
    font-size: 16px;
    border-bottom: 1px solid rgba(58, 53, 44, 0.72);
  }
  .gd-nav-link::after {
    bottom: 10px;
    left: auto;
    right: 4px;
    width: 22px;
    transform-origin: right center;
  }

  .gd-nav-toggle { display: inline-flex; }

  .gd-footer-top { grid-template-columns: 1fr 1fr; }
  .gd-footer-brand { grid-column: 1 / -1; }

  .gd-grid--3,
  .gd-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .gd-annotation { writing-mode: horizontal-tb; text-orientation: initial; letter-spacing: 0.24em; }
}

@media (max-width: 760px) {
  .gd-brand-sub { display: none; }
  .gd-brand-mark { width: 34px; height: 34px; }
  .gd-brand-name { font-size: 17px; }
  .gd-header-actions .gd-btn-ghost { display: none; }
  .gd-header-actions .gd-btn { padding: 9px 12px; font-size: 12px; letter-spacing: 0.04em; }
  .gd-nav-toggle-text { display: none; }
}

@media (max-width: 640px) {
  .gd-grid--2,
  .gd-grid--3,
  .gd-grid--4 { grid-template-columns: 1fr; }
  .gd-footer-top { grid-template-columns: 1fr; gap: 26px; }
  .gd-footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }
  .gd-panel { clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px)); }
}

@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;
  }
  .gd-tag--live::before { animation: none; }
  html.gd-js [data-reveal] { opacity: 1; transform: none; }
  .gd-media:hover img { transform: none; }
}