/* ==========================================================================
   君临国际中心 — 共享样式表 /assets/site.css
   框架式导航 · 堆叠切角面板 · 珠宝色分区 · 高原星空质感
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }

ul,
ol { padding: 0; list-style: none; }

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

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

a { color: inherit; text-decoration: none; }

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --plum: #4B3B7A;
  --plum-deep: #2A2140;
  --night: #141B2E;
  --ice: #7FD1E8;
  --ice-deep: #3E8FA8;
  --gold: #E8B75C;
  --wine: #7A2E4A;
  --teal: #0F3A3D;
  --frost: #F5F3F7;
  --dust: #C9C4D6;

  --ink: #2A2140;
  --ink-soft: #554D6B;
  --ink-mute: #736C87;
  --line: rgba(75, 59, 122, .16);
  --line-dark: rgba(201, 196, 214, .18);

  --font-display: system-ui, -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-editorial: Georgia, "Songti SC", "Source Han Serif SC", "Noto Serif SC", "SimSun", serif;
  --font-body: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-numeric: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;

  --gutter: clamp(18px, 4.5vw, 64px);
  --stack-gap: clamp(26px, 4.4vw, 56px);
  --page-max: 1280px;
  --cut-c: 14px;
  --ease: cubic-bezier(.22, .72, .28, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--frost);
  background-image:
    radial-gradient(120% 70% at 100% 0%, rgba(75, 59, 122, .10), rgba(245, 243, 247, 0) 60%),
    radial-gradient(85% 60% at 0% 100%, rgba(15, 58, 61, .08), rgba(245, 243, 247, 0) 62%);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: .08em;
  color: inherit;
}

p, li, h1, h2, h3, h4 { overflow-wrap: break-word; }

strong { font-weight: 700; }

time,
.num,
.section-no,
.nav-index,
.chip { font-family: var(--font-numeric); font-variant-numeric: tabular-nums; }

/* 切角统一几何 */
.panel,
.chip,
.btn,
.copy-btn,
.image-frame,
.skip-link {
  clip-path: polygon(
    var(--cut-c) 0,
    100% 0,
    100% calc(100% - var(--cut-c)),
    calc(100% - var(--cut-c)) 100%,
    0 100%,
    0 var(--cut-c)
  );
}

/* ---------- 4. 通用容器 ---------- */
.shell {
  width: min(var(--page-max), 100% - (var(--gutter) * 2));
  margin-inline: auto;
}

.shell--narrow { width: min(940px, 100% - (var(--gutter) * 2)); margin-inline: auto; }

.section { padding-block: clamp(44px, 7.5vw, 104px); }

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

.offset-right { margin-left: clamp(0px, 4vw, 60px); }
.offset-left { margin-right: clamp(0px, 4vw, 60px); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}

.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }

/* ---------- 5. 切角面板 ---------- */
.panel {
  --cut-c: 18px;
  position: relative;
  padding: clamp(22px, 3.2vw, 46px);
  background: #ffffff;
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--line);
}

.panel--lg { --cut-c: 26px; }

.panel--plum {
  background: linear-gradient(150deg, var(--plum) 0%, #3A2E60 100%);
  color: var(--frost);
  box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .26);
}

.panel--night {
  background: linear-gradient(158deg, var(--night) 0%, var(--plum-deep) 62%, #35264F 100%);
  color: var(--frost);
  box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .22);
}

.panel--teal {
  background: linear-gradient(150deg, var(--teal) 0%, #0B2A2D 100%);
  color: var(--frost);
  box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .2);
}

.panel--wine {
  background: linear-gradient(150deg, var(--wine) 0%, #4E1D30 100%);
  color: var(--frost);
  box-shadow: inset 0 0 0 1px rgba(232, 183, 92, .28);
}

/* 深色面板的星点纹理 */
.panel--night::before,
.panel--plum::before,
.panel--teal::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .55;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 18%, rgba(255, 255, 255, .8), transparent 62%),
    radial-gradient(1.2px 1.2px at 34% 62%, rgba(127, 209, 232, .85), transparent 62%),
    radial-gradient(1.6px 1.6px at 58% 26%, rgba(255, 255, 255, .7), transparent 62%),
    radial-gradient(1.1px 1.1px at 76% 74%, rgba(232, 183, 92, .8), transparent 62%),
    radial-gradient(1.3px 1.3px at 88% 34%, rgba(255, 255, 255, .6), transparent 62%),
    radial-gradient(1px 1px at 46% 88%, rgba(127, 209, 232, .7), transparent 62%);
}

.panel > * { position: relative; z-index: 1; }

/* ---------- 6. 标签 / 徽标 ---------- */
.chip {
  --cut-c: 7px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  font-size: 11px;
  letter-spacing: .14em;
  line-height: 1.6;
  background: rgba(255, 255, 255, .94);
  color: var(--plum-deep);
  box-shadow: inset 0 0 0 1px rgba(75, 59, 122, .22);
}

.chip--gold { background: var(--gold); color: var(--night); box-shadow: inset 0 0 0 1px rgba(20, 27, 46, .2); }
.chip--ice { background: rgba(127, 209, 232, .16); color: var(--ice); box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .5); }
.chip--wine { background: var(--wine); color: var(--frost); box-shadow: inset 0 0 0 1px rgba(232, 183, 92, .3); }
.chip--teal { background: var(--teal); color: var(--frost); box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .3); }

/* ---------- 7. 按钮 ---------- */
.btn {
  --cut-c: 12px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .14em;
  background: var(--plum);
  color: var(--frost);
  cursor: pointer;
  transition: transform .22s var(--ease), background-color .22s var(--ease), color .22s var(--ease);
}

.btn:hover { transform: translate(-2px, -2px); }

.btn--gold { background: var(--gold); color: var(--night); }
.btn--ice { background: var(--ice); color: var(--night); }
.btn--ghost {
  background: transparent;
  color: var(--ice);
  box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .55);
}

.btn:focus-visible { outline: none; box-shadow: inset 0 0 0 2px var(--gold); }

/* ---------- 8. 文本组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-numeric);
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--ice-deep);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
  transform: rotate(-14deg);
}

.panel--night .eyebrow,
.panel--plum .eyebrow,
.panel--teal .eyebrow,
.panel--wine .eyebrow { color: var(--ice); }

.section-no {
  display: block;
  font-size: clamp(50px, 8vw, 108px);
  font-weight: 700;
  line-height: .82;
  letter-spacing: .02em;
  color: rgba(75, 59, 122, .2);
}

@supports (-webkit-text-stroke: 1px black) {
  .section-no { color: transparent; -webkit-text-stroke: 1.4px rgba(75, 59, 122, .5); }
}

@supports (-webkit-text-stroke: 1px black) {
  .panel--night .section-no,
  .panel--plum .section-no,
  .panel--teal .section-no,
  .panel--wine .section-no { color: transparent; -webkit-text-stroke-color: rgba(127, 209, 232, .72); }
}

.editorial {
  font-family: var(--font-editorial);
  font-size: clamp(19px, 2.1vw, 24px);
  line-height: 1.72;
  letter-spacing: .01em;
}

.prose {
  max-width: 68ch;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.prose > * + * { margin-top: 1.05em; }
.prose strong { color: var(--plum); }

.prose a {
  color: var(--plum);
  border-bottom: 1px solid rgba(127, 209, 232, .7);
}

.panel--night .prose,
.panel--plum .prose,
.panel--teal .prose,
.panel--wine .prose { color: rgba(245, 243, 247, .82); }

/* 键值资料行 */
.meta-list { display: grid; gap: 10px; }

.meta-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

.meta-key {
  font-family: var(--font-numeric);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ice-deep);
  min-width: 76px;
}

.meta-value { font-size: 15px; color: var(--ink); }

/* 面包屑 */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ink-mute);
}

.breadcrumbs li { display: flex; align-items: center; gap: 10px; }

.breadcrumbs li + li::before {
  content: "";
  width: 8px;
  height: 1px;
  background: var(--ice-deep);
  transform: rotate(-22deg);
}

.breadcrumbs a { color: var(--plum); }
.breadcrumbs a:hover { color: var(--ice-deep); }

/* ---------- 9. 图片容器基础 ---------- */
.image-frame {
  --cut-c: 26px;
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: linear-gradient(150deg, var(--night) 0%, var(--plum) 100%);
  box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .28);
}

.image-frame > img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(20, 27, 46, 0) 46%, rgba(20, 27, 46, .48) 100%);
}

.image-frame--wide { aspect-ratio: 16 / 9; }
.image-frame--tall { aspect-ratio: 3 / 4; }
.image-frame--square { aspect-ratio: 1 / 1; }

/* ---------- 10. 跳转链接 ---------- */
.skip-link {
  --cut-c: 10px;
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 11px 20px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  background: var(--gold);
  color: var(--night);
  transform: translateY(-220%);
  transition: transform .22s var(--ease);
}

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

/* ---------- 11. 页头 · 框架式导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--night);
  color: var(--frost);
  border-bottom: 1px solid rgba(127, 209, 232, .2);
}

.header-rail {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px var(--gutter);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  position: relative;
  flex: none;
  width: 36px;
  height: 36px;
  background: linear-gradient(140deg, var(--ice) 0%, var(--plum) 58%, var(--gold) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 70%, 70% 100%, 0 100%, 0 30%);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  background: var(--night);
  clip-path: inherit;
}

.brand-text { display: block; min-width: 0; }

.brand-name {
  display: block;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .16em;
  line-height: 1.25;
  color: var(--frost);
}

.brand-subline {
  display: block;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--dust);
}

.nav-toggle {
  --cut-c: 9px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--ice);
  box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .45);
  cursor: pointer;
  transition: background-color .22s var(--ease), color .22s var(--ease);
}

.nav-toggle:hover { background: rgba(127, 209, 232, .12); }

.nav-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle-icon span {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform .26s var(--ease), opacity .2s var(--ease), width .26s var(--ease);
}

.nav-toggle-icon span:last-child { width: 70%; }

.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(3) { width: 100%; transform: translateY(-5.5px) rotate(-45deg); }

.site-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 0;
  overflow: hidden;
  background: var(--plum-deep);
  border-bottom: 1px solid rgba(127, 209, 232, .22);
  transition: max-height .4s var(--ease);
}

.site-nav[data-open] {
  max-height: min(78vh, 620px);
  overflow-y: auto;
}

.nav-list { display: block; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px var(--gutter);
  border-bottom: 1px solid rgba(201, 196, 214, .14);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--frost);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

.nav-index {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .06em;
  color: var(--ice-deep);
}

.nav-link:hover { background: rgba(127, 209, 232, .1); color: var(--ice); }

.nav-link[aria-current="page"] {
  background: var(--ice);
  color: var(--night);
}

.nav-link[aria-current="page"] .nav-index { color: rgba(20, 27, 46, .7); }

.nav-foot {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 18px var(--gutter) 26px;
}

.nav-utility {
  font-size: 13px;
  line-height: 1.6;
  color: var(--dust);
  border-bottom: 1px dashed rgba(232, 183, 92, .55);
  transition: color .2s var(--ease);
}

.nav-utility:hover { color: var(--gold); }

.rail-progress {
  position: absolute;
  top: 0;
  right: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--ice), var(--gold));
  transform: scaleY(0);
  transform-origin: 50% 0;
  pointer-events: none;
  z-index: 3;
}

/* ---------- 12. 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(44px, 7vw, 110px);
  padding: clamp(38px, 6vw, 78px) var(--gutter) 26px;
  background: var(--plum-deep);
  color: var(--frost);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 58%;
  height: 165%;
  transform: rotate(-9deg);
  background: linear-gradient(118deg, rgba(75, 59, 122, .78), rgba(15, 58, 61, .32) 72%, rgba(15, 58, 61, 0) 100%);
  pointer-events: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  top: 0;
  left: -6%;
  width: 112%;
  height: 1px;
  transform: rotate(-1.4deg);
  transform-origin: left center;
  background: linear-gradient(90deg, rgba(127, 209, 232, 0), rgba(127, 209, 232, .7), rgba(127, 209, 232, 0));
  pointer-events: none;
}

.footer-shell {
  position: relative;
  z-index: 1;
  width: min(var(--page-max), 100%);
  margin-inline: auto;
}

.footer-panel {
  --cut-c: 26px;
  position: relative;
  padding: clamp(26px, 4vw, 52px);
  background: linear-gradient(158deg, var(--night) 0%, var(--plum-deep) 58%, #35264F 100%);
  box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .22);
}

.footer-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .5;
  background-image:
    radial-gradient(1.4px 1.4px at 8% 22%, rgba(255, 255, 255, .8), transparent 62%),
    radial-gradient(1.2px 1.2px at 27% 74%, rgba(127, 209, 232, .85), transparent 62%),
    radial-gradient(1.5px 1.5px at 52% 18%, rgba(255, 255, 255, .68), transparent 62%),
    radial-gradient(1.1px 1.1px at 71% 66%, rgba(232, 183, 92, .8), transparent 62%),
    radial-gradient(1.3px 1.3px at 91% 30%, rgba(255, 255, 255, .6), transparent 62%);
}

.footer-panel > * { position: relative; z-index: 1; }

.footer-head { max-width: 62ch; }

.footer-brand {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.6vw, 21px);
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--frost);
}

.footer-note {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--dust);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.5fr;
  gap: clamp(22px, 3vw, 46px);
  margin-top: clamp(26px, 3.6vw, 46px);
  padding-top: clamp(24px, 3.2vw, 38px);
  border-top: 1px solid var(--line-dark);
}

.footer-col-title {
  margin-bottom: 14px;
  font-family: var(--font-numeric);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .28em;
  color: var(--ice);
}

.footer-links { display: grid; gap: 2px; }

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 4px 0;
  font-size: 15px;
  color: var(--dust);
  transition: color .2s var(--ease), transform .2s var(--ease);
}

.footer-links a::before {
  content: "";
  width: 9px;
  height: 1px;
  background: var(--ice-deep);
  transform: rotate(-24deg);
  transition: background-color .2s var(--ease);
}

.footer-links a:hover { color: var(--frost); transform: translateX(3px); }
.footer-links a:hover::before { background: var(--gold); }

.footer-contact { display: grid; gap: 2px; }

.footer-contact li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(201, 196, 214, .16);
  font-size: 14px;
}

.contact-key {
  font-family: var(--font-numeric);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ice-deep);
  min-width: 44px;
}

.contact-value {
  color: var(--frost);
  word-break: break-all;
  flex: 1 1 auto;
  min-width: 0;
}

.copy-btn {
  --cut-c: 6px;
  flex: none;
  margin-left: auto;
  padding: 3px 11px;
  font-family: var(--font-numeric);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ice);
  box-shadow: inset 0 0 0 1px rgba(127, 209, 232, .42);
  cursor: pointer;
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

.copy-btn:hover { background: rgba(127, 209, 232, .16); }
.copy-btn[data-copy-state="ok"] { background: var(--ice); color: var(--night); box-shadow: none; }
.copy-btn[data-copy-state="fail"] { background: var(--wine); color: var(--frost); box-shadow: none; }

.footer-legal {
  margin-top: clamp(22px, 3vw, 34px);
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .1em;
  color: rgba(201, 196, 214, .82);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 20px;
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(201, 196, 214, .8);
}

.footer-base-note { color: rgba(127, 209, 232, .8); }

/* ---------- 13. 动效 ---------- */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
}

html.has-js [data-reveal="right"] { transform: translate(22px, 14px); }
html.has-js [data-reveal="left"] { transform: translate(-22px, 14px); }

html.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity .62s var(--ease), transform .62s var(--ease);
}

/* ---------- 14. 焦点与可访问 ---------- */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.panel--night :focus-visible,
.panel--plum :focus-visible,
.site-header :focus-visible,
.site-footer :focus-visible { outline-color: var(--gold); }

/* ---------- 15. 响应式 ---------- */
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-col--contact { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .col-3, .col-4, .col-5, .col-6,
  .col-7, .col-8, .col-9 { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .brand-subline { display: none; }
  .nav-toggle-text { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-col--contact { grid-column: auto; }
  .footer-base { justify-content: flex-start; }
}

@media (min-width: 1024px) {
  :root { --rail-w: 268px; }

  body { padding-left: 268px; }

  .site-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: 268px;
    overflow: hidden;
    border-bottom: 0;
    border-right: 1px solid rgba(127, 209, 232, .2);
    background:
      linear-gradient(180deg, rgba(75, 59, 122, .55) 0%, rgba(20, 27, 46, 0) 50%),
      var(--night);
  }

  .site-header::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: .55;
    background-image:
      radial-gradient(1.4px 1.4px at 26% 12%, rgba(255, 255, 255, .8), transparent 62%),
      radial-gradient(1.2px 1.2px at 68% 24%, rgba(127, 209, 232, .85), transparent 62%),
      radial-gradient(1.5px 1.5px at 38% 44%, rgba(255, 255, 255, .7), transparent 62%),
      radial-gradient(1.1px 1.1px at 80% 62%, rgba(232, 183, 92, .8), transparent 62%),
      radial-gradient(1.3px 1.3px at 22% 80%, rgba(255, 255, 255, .6), transparent 62%);
  }

  .site-header::after {
    content: "";
    position: absolute;
    left: -40%;
    bottom: 9%;
    width: 180%;
    height: 1px;
    transform: rotate(-13deg);
    background: linear-gradient(90deg, rgba(127, 209, 232, 0), rgba(127, 209, 232, .5), rgba(127, 209, 232, 0));
    pointer-events: none;
  }

  .header-rail {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    height: 100%;
    padding: 0;
    gap: 0;
  }

  .brand { padding: 36px 26px 24px; }
  .brand-mark { width: 40px; height: 40px; }
  .brand-name { font-size: 19px; }

  .nav-toggle { display: none; }

  .site-nav {
    position: static;
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    max-height: none;
    overflow: visible;
    background: transparent;
    border-bottom: 0;
    transition: none;
  }

  .site-nav[data-open] { max-height: none; overflow: visible; }

  .nav-list {
    margin: 0 26px;
    padding-top: 22px;
    border-top: 1px solid var(--line-dark);
  }

  .nav-link {
    padding: 12px 0 12px 16px;
    border-bottom: 0;
    border-left: 2px solid rgba(201, 196, 214, .2);
    font-size: 15px;
  }

  .nav-link:hover { background: transparent; color: var(--ice); }

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

  .nav-link[aria-current="page"] .nav-index { color: var(--gold); }

  .nav-foot {
    margin-top: auto;
    padding: 22px 26px 32px;
    border-top: 1px solid var(--line-dark);
  }

  .footer-grid { grid-template-columns: 1fr 1fr 1.5fr; }
  .footer-col--contact { grid-column: auto; }
}

@media (min-width: 1440px) {
  :root { --page-max: 1360px; }
}

/* ---------- 16. 减少动态 ---------- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

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

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

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

  .rail-progress { transition: none; }
}