/* ============================================================
   鼎盛娱乐 · 共享站点样式 /assets/site.css
   深墨绿 × 鎏金 / 玻璃命令栏 / 连续画布 / 展签式索引
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
main { display: block; }

/* ---------- 2. 变量 ---------- */
:root {
  --jade-950: #061815;
  --jade-900: #0B2B26;
  --jade-800: #123F37;
  --jade-700: #17514A;
  --gold: #C9A227;
  --gold-bright: #E8C860;
  --cinnabar: #C0392B;
  --cyan: #19C6B4;
  --violet: #6C5B7B;
  --mist: #8A9A94;
  --paper: #F5F1E8;

  --muted: rgba(245, 241, 232, 0.66);
  --muted-soft: rgba(245, 241, 232, 0.48);
  --line: rgba(201, 162, 39, 0.30);
  --line-soft: rgba(245, 241, 232, 0.12);
  --glass: rgba(11, 43, 38, 0.62);
  --glass-deep: rgba(6, 24, 21, 0.88);

  --shell: 1240px;
  --gutter: clamp(1.05rem, 4vw, 2.75rem);
  --header-h: 68px;
  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;
  --shadow-lift: 0 30px 65px -34px rgba(0, 0, 0, 0.9);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --font-display: Georgia, "Songti SC", "Source Han Serif SC", "Noto Serif CJK SC", "STSong", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-data: ui-monospace, SFMono-Regular, Menlo, Consolas, "DejaVu Sans Mono", monospace;
}

/* ---------- 3. 基础与中文排版 ---------- */
body {
  min-height: 100%;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--jade-900);
  background-image:
    radial-gradient(90rem 42rem at 88% -12%, rgba(201, 162, 39, 0.17), transparent 62%),
    radial-gradient(70rem 46rem at -12% 18%, rgba(25, 198, 180, 0.10), transparent 64%),
    linear-gradient(180deg, #0B2B26 0%, #08211D 58%, #061815 100%);
  background-repeat: no-repeat;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 800; line-height: 1.2; letter-spacing: 0.01em; }
p { text-wrap: pretty; }
strong { color: var(--gold-bright); font-weight: 600; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

#main-content { scroll-margin-top: 92px; }

/* ---------- 4. 布局工具 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -120px;
  z-index: 200;
  padding: 0.6rem 1.05rem;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold));
  color: #1A1204;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-s);
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 0.65rem; }

/* ---------- 5. 页眉命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(6, 24, 21, 0.94), rgba(11, 43, 38, 0.78));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px) saturate(125%);
  transition: box-shadow 0.3s var(--ease), background 0.3s var(--ease);
}
.site-header[data-scrolled] {
  box-shadow: 0 22px 48px -34px rgba(0, 0, 0, 0.95), 0 1px 0 rgba(232, 200, 96, 0.16);
  background: linear-gradient(180deg, rgba(6, 24, 21, 0.98), rgba(9, 36, 31, 0.9));
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(245, 241, 232, 0.06);
  overflow: hidden;
}
.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--gold) 0%, var(--gold-bright) 48%, var(--cyan) 100%);
  transition: transform 0.12s linear;
}

.header-bar {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2.2vw, 2rem);
  min-height: var(--header-h);
  padding-block: 0.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--paper);
  flex: none;
}
.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 700;
  color: #1A1204;
  border-radius: 10px;
  background: linear-gradient(150deg, var(--gold-bright) 0%, var(--gold) 58%, #8C6E15 100%);
  box-shadow: 0 0 0 1px rgba(232, 200, 96, 0.5), 0 10px 24px -14px rgba(201, 162, 39, 0.95);
}
.brand-lockup { display: block; }
.brand-name {
  display: block;
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.25;
}
.brand-sub {
  display: block;
  font-family: var(--font-data);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--muted-soft);
  line-height: 1.4;
}
.brand--footer .brand-mark { width: 44px; height: 44px; font-size: 1.3rem; }
.brand--footer .brand-name { font-size: 1.14rem; }

.main-nav { margin-inline: auto; }
.nav-index {
  display: flex;
  align-items: center;
  gap: clamp(0.1rem, 1vw, 0.7rem);
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.42rem;
  padding: 0.5rem 0.72rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--paper);
  font-size: 0.9rem;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.24s var(--ease), border-color 0.24s var(--ease), color 0.24s var(--ease);
}
.nav-num {
  font-family: var(--font-data);
  font-size: 0.63rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  opacity: 0.75;
  transition: color 0.24s var(--ease), opacity 0.24s var(--ease);
}
.nav-label { letter-spacing: 0.04em; }
.nav-link:hover { background: rgba(25, 198, 180, 0.09); border-color: rgba(25, 198, 180, 0.3); color: #FFFFFF; }
.nav-link:hover .nav-num { color: var(--cyan); opacity: 1; }
.nav-link[aria-current="page"] {
  background: linear-gradient(180deg, rgba(201, 162, 39, 0.18), rgba(201, 162, 39, 0.06));
  border-color: rgba(201, 162, 39, 0.52);
  color: var(--gold-bright);
}
.nav-link[aria-current="page"] .nav-num { color: var(--gold-bright); opacity: 1; }
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold-bright);
  transform: translateX(-50%);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-left: auto;
}
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.34rem 0.72rem;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: rgba(6, 24, 21, 0.55);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--mist);
  white-space: nowrap;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(25, 198, 180, 0.16);
  animation: dsPulse 2.8s ease-in-out infinite;
}
@keyframes dsPulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(25, 198, 180, 0.14); }
  50% { box-shadow: 0 0 0 7px rgba(25, 198, 180, 0.05); }
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.48rem 0.82rem;
  background: rgba(245, 241, 232, 0.03);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper);
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: background 0.24s var(--ease), border-color 0.24s var(--ease);
}
.nav-toggle:hover { background: rgba(201, 162, 39, 0.12); border-color: rgba(201, 162, 39, 0.5); }
.nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold-bright);
  transition: background 0.24s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold-bright);
  transition: transform 0.28s var(--ease), top 0.28s var(--ease);
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* ---------- 6. 按钮与标签 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.62rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.22s var(--ease), box-shadow 0.26s var(--ease), background 0.24s var(--ease), border-color 0.24s var(--ease), color 0.24s var(--ease);
}
.btn--gold {
  color: #1A1204;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold));
  border-color: rgba(232, 200, 96, 0.6);
  box-shadow: 0 14px 30px -18px rgba(201, 162, 39, 0.95);
}
.btn--gold:hover { transform: translateY(-1px); box-shadow: 0 20px 36px -18px rgba(232, 200, 96, 0.95); }
.btn--ghost {
  color: var(--paper);
  background: rgba(245, 241, 232, 0.03);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--cyan); color: #FFFFFF; background: rgba(25, 198, 180, 0.1); }
.btn--sm { padding: 0.46rem 0.98rem; font-size: 0.79rem; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.7rem;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.chip--gold { color: var(--gold-bright); border-color: rgba(201, 162, 39, 0.42); background: rgba(201, 162, 39, 0.08); }
.chip--alert { color: #F4C9C3; border-color: rgba(192, 57, 43, 0.55); background: rgba(192, 57, 43, 0.16); }

.exhibit-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.26rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: rgba(201, 162, 39, 0.06);
  font-family: var(--font-data);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--gold);
}
.exhibit-tag::before { content: ""; width: 14px; height: 1px; background: var(--gold); }

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3.5rem, 8vw, 6.5rem);
  background: linear-gradient(180deg, rgba(6, 24, 21, 0.35) 0%, rgba(6, 24, 21, 0.96) 42%, var(--jade-950) 100%);
  border-top: 1px solid var(--line);
  color: var(--paper);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 162, 39, 0.65) 22%, rgba(25, 198, 180, 0.5) 58%, transparent);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 0.9fr) minmax(0, 1.5fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  padding-block: clamp(2.4rem, 5vw, 4.25rem) clamp(1.8rem, 4vw, 3rem);
}

.footer-brand { display: grid; align-content: start; gap: 1rem; }
.footer-tagline {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 30ch;
}
.footer-facts { display: grid; gap: 0.5rem; }
.footer-facts li { display: flex; align-items: baseline; gap: 0.6rem; font-size: 0.82rem; }
.fact-k {
  flex: none;
  min-width: 4.6rem;
  font-family: var(--font-data);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--mist);
}
.fact-v { color: rgba(245, 241, 232, 0.86); }

.footer-col { display: grid; align-content: start; }
.footer-title {
  margin-bottom: 1rem;
  font-family: var(--font-data);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--gold);
}
.footer-list { display: grid; gap: 0.55rem; }
.footer-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: rgba(245, 241, 232, 0.78);
  text-decoration: none;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}
.footer-list a::before {
  content: "";
  width: 10px;
  height: 1px;
  background: var(--gold);
  opacity: 0.6;
  transition: width 0.24s var(--ease), opacity 0.24s var(--ease);
}
.footer-list a:hover { color: var(--gold-bright); transform: translateX(2px); }
.footer-list a:hover::before { width: 18px; opacity: 1; }
.footer-list--plain li {
  font-size: 0.84rem;
  color: var(--mist);
  padding-left: 0.85rem;
  position: relative;
}
.footer-list--plain li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(25, 198, 180, 0.55);
}

.footer-contact-list { display: grid; gap: 0.85rem; }
.footer-contact-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.2rem 0.6rem;
  align-items: center;
}
.contact-k {
  grid-column: 1 / -1;
  font-family: var(--font-data);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}
.contact-v {
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: var(--paper);
  word-break: break-word;
}
.copy-btn {
  padding: 0.22rem 0.62rem;
  border: 1px solid rgba(201, 162, 39, 0.4);
  border-radius: 999px;
  background: rgba(201, 162, 39, 0.1);
  color: var(--gold-bright);
  font-family: var(--font-data);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.copy-btn:hover { background: rgba(201, 162, 39, 0.24); border-color: rgba(232, 200, 96, 0.7); }
.copy-hint {
  min-height: 1.2em;
  margin-top: 0.7rem;
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.footer-bottom {
  border-top: 1px solid var(--line-soft);
  background: rgba(6, 24, 21, 0.78);
}
.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-block: 1.1rem;
}
.footer-legal {
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  font-size: 0.78rem;
}
.footer-legal-links a {
  color: rgba(245, 241, 232, 0.76);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.footer-legal-links a:hover { color: var(--gold-bright); border-bottom-color: var(--gold); }

/* ---------- 8. 页面基础件 ---------- */
.breadcrumb {
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}
.breadcrumb__list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.breadcrumb__item { display: flex; align-items: center; gap: 0.5rem; }
.breadcrumb__item::after { content: "/"; color: rgba(245, 241, 232, 0.22); }
.breadcrumb__item:last-child::after { display: none; }
.breadcrumb__link { color: var(--mist); text-decoration: none; transition: color 0.2s var(--ease); }
.breadcrumb__link:hover { color: var(--gold-bright); }
.breadcrumb__current { color: var(--paper); }

.section { padding-block: clamp(2.2rem, 5.5vw, 4.25rem); }
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line-soft);
}
.section-title {
  margin-top: 0.4rem;
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  text-shadow: 0 1px 0 rgba(201, 162, 39, 0.3);
  transition: color 0.45s var(--ease);
}
[data-section] { scroll-margin-top: 96px; }
[data-section][data-inview="true"] .section-title { color: var(--gold-bright); }
.eyebrow {
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  color: var(--cyan);
}
.lede {
  max-width: 62ch;
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  line-height: 1.9;
  color: rgba(245, 241, 232, 0.78);
}

.prose { max-width: 72ch; }
.prose > * + * { margin-top: 1.05rem; }
.prose h2 { font-size: clamp(1.3rem, 2.4vw, 1.85rem); }
.prose h3 { font-size: clamp(1.1rem, 1.8vw, 1.35rem); }
.prose p, .prose li { color: rgba(245, 241, 232, 0.82); }
.prose ul, .prose ol { padding-left: 1.25rem; display: grid; gap: 0.4rem; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose a { color: var(--gold-bright); text-underline-offset: 3px; }
.prose blockquote {
  padding: 0.4rem 0 0.4rem 1.1rem;
  border-left: 2px solid var(--gold);
  color: rgba(245, 241, 232, 0.75);
}

.grid { display: grid; gap: clamp(1rem, 2.4vw, 1.75rem); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr); }

.collage { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: clamp(0.7rem, 1.5vw, 1.1rem); }
.collage__main { grid-column: span 7; }
.collage__aside { grid-column: span 5; }
.collage__tile { grid-column: span 4; }

.card {
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(18, 63, 55, 0.9), rgba(10, 34, 30, 0.94));
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.card--solid { background: var(--jade-800); }
.card--lift:hover {
  transform: translateY(-4px);
  border-color: rgba(201, 162, 39, 0.4);
  box-shadow: var(--shadow-lift);
}
.glass {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(18, 63, 55, 0.55), rgba(11, 43, 38, 0.42));
  backdrop-filter: blur(12px);
}

.data-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 1px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  background: var(--line-soft);
  overflow: hidden;
}
.data-strip__item {
  padding: 1.05rem 1.2rem;
  background: linear-gradient(180deg, rgba(12, 45, 39, 0.92), rgba(8, 30, 26, 0.92));
}
.data-value {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(1.55rem, 3.2vw, 2.4rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--gold-bright);
}
.data-label {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.panel {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, rgba(18, 63, 55, 0.62), rgba(11, 43, 38, 0.5));
  overflow: hidden;
  transition: border-color 0.28s var(--ease);
}
.panel + .panel { margin-top: 0.75rem; }
.panel[data-open] { border-color: rgba(201, 162, 39, 0.42); }
.panel__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1rem 1.25rem;
  border: 0;
  background: none;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}
.panel__trigger::after {
  content: "+";
  font-family: var(--font-data);
  font-size: 1.15rem;
  color: var(--gold-bright);
  transition: transform 0.3s var(--ease);
}
.panel__trigger[aria-expanded="true"]::after { transform: rotate(45deg); }
.panel__body {
  max-height: 0;
  padding-inline: 1.25rem;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s var(--ease), opacity 0.3s var(--ease), padding 0.3s var(--ease);
}
.panel__body[data-open] { padding-bottom: 1.15rem; opacity: 1; }

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  background:
    radial-gradient(120% 100% at 18% 0%, rgba(25, 198, 180, 0.16), transparent 62%),
    radial-gradient(90% 90% at 92% 100%, rgba(201, 162, 39, 0.2), transparent 66%),
    linear-gradient(160deg, var(--jade-800), var(--jade-950));
  box-shadow: var(--shadow-lift);
}
.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(0deg, rgba(245, 241, 232, 0.05) 0 1px, transparent 1px 28px);
  pointer-events: none;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame__media { width: 100%; height: 100%; object-fit: cover; }
.media-frame__caption {
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: rgba(245, 241, 232, 0.84);
}

/* ---------- 9. 动效与显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 10. 响应式 ---------- */
@media (max-width: 1180px) {
  .nav-link { padding: 0.5rem 0.5rem; font-size: 0.86rem; }
  .nav-num { font-size: 0.6rem; }
}
@media (max-width: 1120px) {
  .status-chip { display: none; }
}
@media (max-width: 1080px) {
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-contact { grid-column: 1 / -1; }
}
@media (max-width: 960px) {
  .grid--2, .grid--3, .grid--split { grid-template-columns: minmax(0, 1fr); }
  .collage__main, .collage__aside { grid-column: span 12; }
  .collage__tile { grid-column: span 6; }
}
@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: block;
    margin: 0;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 0.85rem var(--gutter) 1.35rem;
    background: linear-gradient(180deg, rgba(6, 24, 21, 0.99), rgba(11, 43, 38, 0.98));
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(18px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    clip-path: inset(0 0 100% 0);
    transition: clip-path 0.4s var(--ease), opacity 0.28s var(--ease), transform 0.4s var(--ease), visibility 0.4s;
  }
  .main-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
    clip-path: inset(0 0 0 0);
  }
  .nav-index { display: grid; gap: 0; }
  .nav-link {
    display: flex;
    align-items: baseline;
    padding: 0.85rem 0.25rem;
    border-radius: 0;
    border-bottom: 1px solid var(--line-soft);
    font-size: 1rem;
  }
  .nav-link[aria-current="page"] { border-color: rgba(201, 162, 39, 0.32); background: rgba(201, 162, 39, 0.08); }
  .nav-link[aria-current="page"]::after { left: auto; right: 0.4rem; bottom: 50%; transform: none; }
  .nav-num { font-size: 0.72rem; }
}
@media (max-width: 640px) {
  .brand-sub { display: none; }
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-brand, .footer-contact { grid-column: auto; }
  .footer-bottom__inner { flex-direction: column; align-items: flex-start; }
  .collage__tile { grid-column: span 12; }
  .media-frame--tall { aspect-ratio: 3 / 4; }
}

/* ---------- 11. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}