/* =========================================================
   /assets/site.css — 君临国际 共享样式
   00 reset / 01 tokens / 02 base type / 03 layout
   04 components / 05 header rail / 06 footer / 07 motion
   ========================================================= */

/* ---------- 00 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
img,svg,video{display:block;max-width:100%}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px}
:target{scroll-margin-top:96px}

/* ---------- 01 tokens ---------- */
:root{
  --ink-900:#061A2B;
  --ink-850:#08202F;
  --ink-800:#0C2A44;
  --line:#27465F;
  --copper:#B9854B;
  --copper-soft:#D9B47C;
  --teal:#2FD3B5;
  --cyan:#4DE0FF;
  --mist:#8FA3B8;
  --paper:#F2F6F8;
  --text-dark:#12212E;
  --muted:#5E7488;
  --amber:#E0A33A;

  --rail-w:clamp(232px,20vw,282px);
  --content-max:1140px;

  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;

  --font-head:"Sora","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,"Courier New",monospace;

  --ease:cubic-bezier(.4,.1,.2,1);
}

/* ---------- 02 base type ---------- */
body{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(70% 45% at 88% -8%, rgba(47,211,181,.10), transparent 65%),
    radial-gradient(60% 42% at 8% 0%, rgba(185,133,75,.09), transparent 62%),
    linear-gradient(rgba(39,70,95,.20) 1px, transparent 1px),
    linear-gradient(90deg, rgba(39,70,95,.20) 1px, transparent 1px);
  background-size:auto,auto,120px 120px,120px 120px;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(47,211,181,.32);color:#fff}

h1,h2,h3,h4{font-family:var(--font-head);font-weight:700;line-height:1.14;letter-spacing:-.02em;color:#fff}
h1{font-size:clamp(2rem,4.6vw,3.5rem)}
h2{font-size:clamp(1.45rem,2.9vw,2.25rem)}
h3{font-size:clamp(1.12rem,1.9vw,1.4rem);letter-spacing:-.01em}
h4{font-size:clamp(1rem,1.4vw,1.12rem);letter-spacing:0}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.05em}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0;
}
#main-content{flex:1 0 auto}
#main-content:focus{outline:none}

/* ---------- 03 layout ---------- */
.container{
  width:100%;
  max-width:var(--content-max);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,48px);
}
.section{padding-block:clamp(40px,6vw,88px)}
.section--paper{background:var(--paper);color:var(--text-dark)}
.section--paper :is(h1,h2,h3,h4){color:#0B2437}
.section--paper .lede{color:#3B5264}

.grid{display:grid;gap:clamp(16px,2.4vw,28px);grid-template-columns:1fr}
@media (min-width:720px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:900px){
  .grid--asym{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr)}
}
@media (min-width:1080px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--copper-soft);
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--copper),transparent)}
.lede{font-size:clamp(1rem,1.4vw,1.15rem);line-height:1.8;color:rgba(242,246,248,.82);max-width:70ch}
.prose{max-width:74ch;color:rgba(242,246,248,.86)}
.prose p + p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em}
.section--paper .prose{color:#2C4354}

/* ---------- 04 components ---------- */
.panel{
  position:relative;
  overflow:hidden;
  padding:clamp(18px,2.6vw,32px);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(160deg, rgba(12,42,68,.94), rgba(6,26,43,.94));
}
.panel--paper{background:var(--paper);color:var(--text-dark);border-color:#C9D8E2}
.panel--paper :is(h1,h2,h3,h4){color:#0B2437}
.panel--dashed{border-style:dashed}

.divider{height:1px;border:0;background:var(--line);margin:0}
.divider--copper{background:linear-gradient(90deg,var(--copper),transparent)}

.note{
  display:flex;gap:.75rem;
  padding:.8rem 0 .8rem 1rem;
  border-left:2px solid var(--amber);
  background:linear-gradient(90deg, rgba(224,163,58,.12), transparent 72%);
  color:rgba(242,246,248,.85);
  font-size:.94rem;line-height:1.7;
}
.section--paper .note{color:#3B5264}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  padding:.78rem 1.35rem;
  border:1px solid transparent;border-radius:10px;
  font-family:var(--font-head);font-size:.95rem;font-weight:600;letter-spacing:.01em;
  cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn--primary{background:var(--teal);color:#04202C;box-shadow:0 12px 26px -16px rgba(47,211,181,.95)}
.btn--primary:hover{background:#48e7ca}
.btn--ghost{border-color:var(--line);background:rgba(12,42,68,.55);color:var(--paper)}
.btn--ghost:hover{border-color:var(--teal);background:rgba(47,211,181,.14);color:#fff}
.btn--copper{background:linear-gradient(135deg,var(--copper),#96693A);color:#140D05}
.btn--copper:hover{background:linear-gradient(135deg,var(--copper-soft),var(--copper))}
.btn--sm{padding:.5rem .9rem;font-size:.82rem}
.btn--block{width:100%}

.link-arrow{
  display:inline-flex;align-items:center;gap:.5rem;
  padding-bottom:2px;
  border-bottom:1px solid rgba(47,211,181,.42);
  color:var(--teal);font-weight:600;font-size:.95rem;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.link-arrow::after{content:"→";font-family:var(--font-mono)}
.link-arrow:hover{color:var(--copper-soft);border-color:var(--copper-soft)}

.path-tag{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.28rem .6rem;
  border:1px dashed rgba(143,163,184,.45);border-radius:6px;
  background:rgba(6,26,43,.6);
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.02em;
  color:var(--copper-soft);word-break:break-all;
}
.section--paper .path-tag{background:rgba(255,255,255,.7);border-color:rgba(143,163,184,.7);color:#7A5526}

.tag{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.3rem .62rem;
  border:1px solid var(--line);border-radius:6px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--mist);
}
.tag--current{border-color:rgba(77,224,255,.55);background:rgba(77,224,255,.12);color:var(--cyan)}
.tag--legacy{border-color:rgba(143,163,184,.55);background:rgba(143,163,184,.14);color:var(--mist)}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.06em;color:var(--mist);
}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.breadcrumb__item{display:inline-flex;align-items:center;gap:.5rem}
.breadcrumb__link{color:var(--mist);border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.breadcrumb__link:hover{color:var(--teal);border-color:rgba(47,211,181,.5)}
.breadcrumb__sep{color:var(--line)}
.breadcrumb__current{color:var(--paper)}

/* 图片占位容器基础规则 */
.media{
  position:relative;
  display:flex;align-items:flex-end;
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:
    linear-gradient(135deg, rgba(185,133,75,.22), rgba(47,211,181,.14)),
    repeating-linear-gradient(0deg, rgba(39,70,95,.55) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(90deg, rgba(39,70,95,.55) 0 1px, transparent 1px 44px),
    var(--ink-800);
}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media__img{width:100%;height:100%;object-fit:cover}
.media__caption{
  position:relative;z-index:1;width:100%;
  padding:12px 16px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.09em;text-transform:uppercase;
  color:var(--copper-soft);
  background:linear-gradient(0deg, rgba(6,26,43,.86), transparent);
}

/* ---------- 05 header：移动端粘性条 + 抽屉 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:300;
  padding:.6rem 1rem;border-radius:var(--r-sm);
  background:var(--teal);color:#04202C;
  font-weight:700;font-size:.9rem;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0)}

.site-header{
  position:sticky;top:0;z-index:100;
  display:flex;flex-direction:column;
  width:100%;
  padding:10px clamp(14px,4vw,22px) 0;
  background:linear-gradient(180deg,#08202F 0%,#05161F 100%);
  border-bottom:1px solid var(--line);
}

.status-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;
  padding-bottom:9px;
  border-bottom:1px solid rgba(39,70,95,.85);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--mist);
}
.status-bar__version{color:var(--copper-soft)}
.status-bar__state{display:inline-flex;align-items:center;gap:7px;color:var(--teal)}
.status-bar__ping{
  width:6px;height:6px;flex:0 0 auto;border-radius:50%;
  background:var(--teal);box-shadow:0 0 0 3px rgba(47,211,181,.18);
}

.header-main{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand__mark{
  position:relative;flex:0 0 auto;
  width:28px;height:28px;border-radius:7px;
  border:1px solid rgba(185,133,75,.8);
  background:linear-gradient(135deg, rgba(185,133,75,.32), rgba(47,211,181,.18));
}
.brand__mark::after{
  content:"";position:absolute;inset:8px;
  border:1px solid var(--teal);border-radius:2px;transform:rotate(45deg);
}
.brand__text{display:flex;flex-direction:column;gap:1px;min-width:0}
.brand__name{font-family:var(--font-head);font-size:1.1rem;font-weight:700;letter-spacing:.06em;color:#fff;line-height:1.2}
.brand__latin{font-size:.6rem;letter-spacing:.26em;text-transform:uppercase;color:var(--copper-soft)}

.nav-toggle{
  display:inline-flex;align-items:center;gap:9px;
  padding:.5rem .8rem;
  border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--paper);
  transition:border-color .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--teal);background:rgba(47,211,181,.12)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:1.5px;background:currentColor;border-radius:2px}
.nav-toggle__label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase}

.site-nav{
  display:flex;flex-direction:column;gap:14px;
  max-height:0;opacity:0;visibility:hidden;overflow:hidden;
  padding-bottom:0;
  transition:max-height .3s var(--ease),opacity .2s var(--ease),visibility .2s var(--ease);
}
.site-header[data-open] .site-nav{
  max-height:min(72vh,560px);
  opacity:1;visibility:visible;
  overflow-y:auto;
  padding-bottom:16px;
}
.site-nav__list{display:flex;flex-direction:column;gap:2px}
.site-nav__link{
  display:grid;grid-template-columns:auto 1fr;align-items:baseline;gap:12px;
  padding:11px 12px;
  border:1px solid transparent;border-radius:10px;
  color:rgba(242,246,248,.78);
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.site-nav__num{font-size:.72rem;letter-spacing:.14em;color:var(--mist);transition:color .18s var(--ease)}
.site-nav__label{font-size:.98rem;font-weight:500}
.site-nav__link:hover{color:#fff;background:rgba(47,211,181,.09);border-color:rgba(47,211,181,.3)}
.site-nav__link:hover .site-nav__num{color:var(--copper-soft)}
.site-nav__link[aria-current="page"]{
  color:#fff;
  background:linear-gradient(90deg, rgba(185,133,75,.24), rgba(185,133,75,.05));
  border-color:rgba(217,180,124,.5);
  box-shadow:inset 3px 0 0 var(--teal);
}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--copper-soft)}

.site-nav__foot{
  display:flex;flex-direction:column;gap:5px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid rgba(39,70,95,.85);
  color:var(--mist);
}
.site-nav__foot-label{font-size:.64rem;letter-spacing:.18em;text-transform:uppercase;color:rgba(143,163,184,.85)}
.site-nav__foot-value{font-size:.82rem;letter-spacing:.02em;color:rgba(242,246,248,.82)}

.rail-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgba(39,70,95,.7);overflow:hidden;pointer-events:none;
}
.rail-progress__bar{
  display:block;height:100%;
  width:calc(var(--progress,0) * 100%);
  background:linear-gradient(90deg,var(--copper),var(--teal));
}

/* ---------- 06 footer ---------- */
.site-footer{
  position:relative;
  margin-top:auto;
  padding-top:clamp(32px,5vw,58px);
  background:linear-gradient(180deg, rgba(12,42,68,.97), #061A2B 72%);
  border-top:1px solid rgba(185,133,75,.5);
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,var(--copper-soft),transparent);
  opacity:.65;
}
.footer-inner{
  display:grid;grid-template-columns:1fr;
  gap:clamp(24px,4vw,40px);
  max-width:var(--content-max);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,48px);
  padding-bottom:clamp(26px,4vw,44px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:9px;max-width:36ch}
.footer-brand__mark{
  position:relative;width:30px;height:30px;border-radius:8px;
  border:1px solid rgba(185,133,75,.72);
  background:linear-gradient(135deg, rgba(185,133,75,.3), rgba(47,211,181,.18));
}
.footer-brand__mark::after{
  content:"";position:absolute;inset:8px;
  border:1px solid var(--teal);border-radius:2px;transform:rotate(45deg);
}
.footer-brand__name{font-family:var(--font-head);font-size:1.5rem;font-weight:700;letter-spacing:.05em;color:#fff;line-height:1.2}
.footer-brand__latin{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--copper-soft)}
.footer-brand__note{font-size:.9rem;line-height:1.72;color:rgba(242,246,248,.7)}
.footer-brand__cta{margin-top:6px;font-size:.85rem}

.footer-index__title,
.footer-contact .footer-index__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--copper-soft);
}
.footer-index__list,
.footer-legal__list{display:flex;flex-direction:column;gap:9px}
.footer-index__link,
.footer-legal__link{
  display:inline-block;
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  font-size:.94rem;color:rgba(242,246,248,.78);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-index__link:hover,
.footer-legal__link:hover{color:#fff;border-color:rgba(47,211,181,.6)}
.footer-legal__icp{margin-top:14px;font-size:.7rem;letter-spacing:.08em;color:var(--mist)}

.footer-contact__list{display:flex;flex-direction:column;gap:12px}
.footer-contact__list li{display:flex;flex-direction:column;gap:2px}
.footer-contact__key{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mist);
}
.footer-contact__value{font-size:.92rem;line-height:1.6;color:rgba(242,246,248,.9);word-break:break-word}
.footer-contact__note{
  margin-top:14px;
  padding-left:10px;
  border-left:2px solid rgba(185,133,75,.55);
  font-size:.82rem;line-height:1.68;color:rgba(143,163,184,.95);
}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;
  max-width:var(--content-max);
  margin-inline:auto;
  padding:16px clamp(18px,4vw,48px) 22px;
  border-top:1px solid rgba(39,70,95,.9);
  font-size:.7rem;letter-spacing:.07em;color:var(--mist);
}
.footer-base__version{color:var(--copper-soft)}
.footer-base__coord{margin-left:auto}

/* ---------- 07 desktop rail ---------- */
@media (min-width:900px){
  body{padding-left:var(--rail-w)}
  .site-header{
    position:fixed;inset:0 auto 0 0;
    width:var(--rail-w);height:100dvh;
    padding:24px 18px 18px;
    border-bottom:0;border-right:1px solid var(--line);
    background:
      radial-gradient(120% 55% at 0% 0%, rgba(47,211,181,.12), transparent 62%),
      linear-gradient(180deg,#08202F 0%,#061A2B 55%,#04131F 100%);
  }
  .status-bar{flex-direction:column;align-items:flex-start;gap:4px;padding-bottom:14px;font-size:.64rem}
  .header-main{padding:18px 0 14px}
  .nav-toggle{display:none}
  .brand__name{font-size:1.15rem}
  .site-nav{
    flex:1 1 auto;min-height:0;
    margin-top:4px;
    max-height:none;opacity:1;visibility:visible;
    overflow-y:auto;padding-bottom:0;
    transition:none;
    scrollbar-width:thin;
  }
  .site-header[data-open] .site-nav{max-height:none}
  .rail-progress{left:auto;right:0;top:0;bottom:0;width:2px;height:auto}
  .rail-progress__bar{
    width:100%;height:calc(var(--progress,0) * 100%);
    background:linear-gradient(180deg,var(--copper),var(--teal));
  }
}

@media (min-width:720px){
  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1080px){
  .footer-inner{grid-template-columns:1.35fr .85fr .85fr 1.15fr}
}
@media (max-width:719px){
  .footer-base__coord{margin-left:0}
}

/* ---------- 08 motion ---------- */
.js-reveal [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.js-reveal [data-reveal].is-visible{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .js-reveal [data-reveal]{opacity:1;transform:none;transition:none}
  .skip-link{transition:none}
  .rail-progress__bar{transition:none}
}