:root{
  --ink:#0B1B2B;
  --ink-2:#13293D;
  --paper:#F7F2E8;
  --vermilion:#C8322B;
  --gilt:#D4A64A;
  --celadon:#5E8C7A;
  --mist-gold:#E8D3A3;
  --deep-red:#6E1E1A;
  --ember:#E07A3F;

  --paper-82:rgba(247,242,232,.82);
  --paper-72:rgba(247,242,232,.72);
  --paper-58:rgba(247,242,232,.58);
  --gilt-line:rgba(212,166,74,.32);
  --gilt-soft:rgba(212,166,74,.14);

  --font-display:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'IBM Plex Mono','SFMono-Regular',monospace;

  --shell:1240px;
  --gutter:clamp(16px,4vw,40px);
  --cut:22px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

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

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

body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,picture,svg,video{display:block;max-width:100%;}
a{color:inherit;}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.16;
  letter-spacing:-.01em;
  margin:0 0 .5em;
}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;}
::selection{background:var(--vermilion);color:var(--paper);}
:focus-visible{outline:3px solid var(--ember);outline-offset:3px;}

/* ---------- 布局基础 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(40px,6vw,80px);}

.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gilt);
}

.rule{
  height:1px;
  border:0;
  margin:clamp(24px,4vw,44px) 0;
  background:linear-gradient(90deg,rgba(212,166,74,.55),rgba(212,166,74,.04));
}

/* ---------- 跳链 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:300;
  padding:11px 20px;
  background:var(--vermilion);
  color:var(--paper);
  font-size:14px;
  letter-spacing:.08em;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform .22s var(--ease);
}
.skip-link:focus{transform:translateY(0);}

/* ---------- 头部 ---------- */
.site-header{
  position:relative;
  z-index:60;
  isolation:isolate;
  color:var(--paper);
  background:
    radial-gradient(120% 140% at 84% -30%,rgba(200,50,43,.34),transparent 62%),
    radial-gradient(90% 120% at 6% 130%,rgba(94,140,122,.16),transparent 62%),
    linear-gradient(180deg,#0B1B2B 0%,#122A41 56%,#0B1B2B 100%);
  border-bottom:1px solid rgba(212,166,74,.42);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(212,166,74,.09) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(212,166,74,.09) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 28%,#000 72%,transparent);
  mask-image:linear-gradient(180deg,transparent,#000 28%,#000 72%,transparent);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:5px;
  pointer-events:none;
  background:repeating-linear-gradient(90deg,rgba(212,166,74,.75) 0 1px,transparent 1px 14px);
  opacity:.45;
}
.header-shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--gutter);
}

.header-rail{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 0 0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mist-gold);
}
.header-rail__coords{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  margin:0;
}
.header-rail__pulse{
  flex:none;
  width:7px;
  height:7px;
  background:var(--celadon);
  box-shadow:0 0 0 3px rgba(94,140,122,.22);
  animation:coordPulse 3.6s ease-in-out infinite;
}
@keyframes coordPulse{
  0%,100%{opacity:.55;box-shadow:0 0 0 3px rgba(94,140,122,.16);}
  50%{opacity:1;box-shadow:0 0 0 6px rgba(94,140,122,.3);}
}
.header-rail__sep{color:rgba(212,166,74,.45);}
.header-rail__actions{
  display:flex;
  align-items:center;
  gap:18px;
}
.rail-link{
  color:var(--mist-gold);
  text-decoration:none;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.rail-link:hover,.rail-link:focus-visible{
  color:var(--paper);
  border-bottom-color:var(--gilt);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 13px;
  background:rgba(212,166,74,.1);
  border:1px solid rgba(212,166,74,.5);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.nav-toggle:hover{background:rgba(212,166,74,.2);border-color:var(--gilt);}
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  gap:3px;
  width:16px;
}
.nav-toggle__bars span{
  display:block;
  height:2px;
  width:100%;
  background:var(--gilt);
  transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.masthead{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:clamp(14px,3vw,40px);
  padding:clamp(16px,2.6vw,30px) 0 clamp(14px,2.2vw,24px);
}
.masthead__aside{
  display:flex;
  flex-direction:column;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--paper-58);
}
.masthead__aside--right{align-items:flex-end;}
.masthead__eyebrow{color:var(--gilt);}
.masthead__meta{color:rgba(232,211,163,.6);}
.masthead__brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
  text-align:center;
  text-decoration:none;
  color:var(--paper);
}
.masthead__name{
  font-family:var(--font-display);
  font-size:clamp(26px,4.2vw,46px);
  font-weight:700;
  line-height:1.12;
  letter-spacing:.12em;
  color:var(--paper);
  transition:color .22s var(--ease);
}
.masthead__brand:hover .masthead__name{color:var(--mist-gold);}
.masthead__tag{
  font-size:12px;
  letter-spacing:.34em;
  text-indent:.34em;
  color:var(--gilt);
}

.site-nav{
  border-top:1px solid rgba(212,166,74,.26);
  border-bottom:1px solid rgba(212,166,74,.14);
}
.nav-list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:stretch;
}
.nav-list li{display:flex;}
.nav-list a{
  position:relative;
  display:flex;
  align-items:center;
  padding:15px clamp(12px,2.2vw,26px);
  font-size:13.5px;
  letter-spacing:.18em;
  white-space:nowrap;
  text-decoration:none;
  color:rgba(247,242,232,.74);
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:50%;right:50%;bottom:9px;
  height:2px;
  background:var(--gilt);
  transition:left .26s var(--ease),right .26s var(--ease);
}
.nav-list a:hover{
  color:var(--paper);
  background:rgba(212,166,74,.08);
}
.nav-list a:hover::after{left:16px;right:16px;}
.nav-list a[aria-current="page"]{
  color:var(--paper);
  background:linear-gradient(180deg,rgba(200,50,43,.9),rgba(110,30,26,.9));
}
.nav-list a[aria-current="page"]::after{
  left:0;right:0;
  background:var(--gilt);
}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:13px 26px;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:500;
  letter-spacing:.1em;
  line-height:1.3;
  text-decoration:none;
  color:var(--paper);
  background:transparent;
  border:1px solid var(--gilt-line);
  border-radius:0;
  cursor:pointer;
  transition:background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.btn::after{
  content:"";
  position:absolute;
  right:-1px;bottom:-1px;
  width:10px;height:10px;
  background:var(--gilt);
  clip-path:polygon(100% 0,100% 100%,0 100%);
  opacity:.75;
  pointer-events:none;
}
.btn:hover{transform:translateY(-2px);}
.btn--primary{
  background:var(--vermilion);
  border-color:var(--vermilion);
  color:var(--paper);
}
.btn--primary:hover{
  background:var(--deep-red);
  border-color:var(--ember);
}
.btn--primary::after{background:var(--mist-gold);}
.btn--ghost{
  color:var(--mist-gold);
  border-color:rgba(212,166,74,.62);
}
.btn--ghost:hover{
  background:rgba(212,166,74,.14);
  color:var(--paper);
  border-color:var(--gilt);
}
.btn--quiet{
  padding-inline:0;
  border-color:transparent;
  color:var(--mist-gold);
}
.btn--quiet::after{display:none;}
.btn--quiet:hover{color:var(--paper);transform:none;}
.btn--sm{
  padding:9px 16px;
  font-size:13px;
  letter-spacing:.12em;
}

/* ---------- 标签与面板 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:.45em;
  padding:4px 10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mist-gold);
  background:rgba(212,166,74,.08);
  border:1px solid var(--gilt-line);
}
.tag--red{color:var(--paper);background:var(--vermilion);border-color:var(--vermilion);}
.tag--celadon{color:var(--paper);background:var(--celadon);border-color:var(--celadon);}

.cut-panel{
  position:relative;
  padding:clamp(20px,3vw,34px);
  background:var(--ink-2);
  border:1px solid var(--gilt-line);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}

.coord-grid{
  background-image:
    linear-gradient(to right,rgba(212,166,74,.14) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(212,166,74,.14) 1px,transparent 1px);
  background-size:48px 48px;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45em;
  margin:0 0 clamp(18px,3vw,28px);
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--paper-58);
}
.breadcrumb li{display:flex;align-items:center;gap:.45em;}
.breadcrumb li+li::before{content:"/";color:rgba(212,166,74,.55);}
.breadcrumb a{text-decoration:none;color:inherit;transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--paper);}
.breadcrumb [aria-current="page"]{color:var(--mist-gold);}

/* ---------- 正文排版 ---------- */
.prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.85;
  color:var(--paper-82);
}
.prose h2{
  margin-top:1.6em;
  font-size:clamp(24px,3vw,32px);
  color:var(--paper);
}
.prose h3{
  margin-top:1.4em;
  font-size:clamp(19px,2.2vw,24px);
  color:var(--paper);
}
.prose a{
  color:var(--mist-gold);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-color:rgba(212,166,74,.5);
}
.prose a:hover{color:var(--paper);}
.prose li{
  position:relative;
  margin-bottom:.5em;
  padding-left:1.1em;
}
.prose li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:5px;height:5px;
  background:var(--gilt);
}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,#13293D 0%,#0B1B2B 100%);
  border:1px solid var(--gilt-line);
  clip-path:polygon(0 0,calc(100% - 26px) 0,100% 26px,100% 100%,26px 100%,0 calc(100% - 26px));
}
.media > img,
.media > picture,
.media > picture > img{
  width:100%;
  height:100%;
  display:block;
  object-fit:cover;
}
.media--wide{aspect-ratio:21/9;}
.media--tall{aspect-ratio:3/4;}
.media--square{aspect-ratio:1/1;}
.media__placeholder{
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:rgba(232,211,163,.45);
  background-image:
    linear-gradient(to right,rgba(212,166,74,.12) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(212,166,74,.12) 1px,transparent 1px);
  background-size:40px 40px;
}
.media__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:10px 14px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist-gold);
  background:linear-gradient(180deg,transparent,rgba(11,27,43,.92));
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  padding:clamp(40px,6vw,72px) 0 0;
  color:var(--paper-72);
  background:
    radial-gradient(90% 90% at 12% 0%,rgba(200,50,43,.16),transparent 62%),
    linear-gradient(180deg,#0B1B2B 0%,#091520 100%);
  border-top:1px solid rgba(212,166,74,.34);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:4px;
  pointer-events:none;
  background:repeating-linear-gradient(90deg,var(--gilt) 0 1px,transparent 1px 18px);
  opacity:.4;
}
.footer-shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--gutter);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1.25fr) minmax(0,1.1fr);
  gap:clamp(26px,4vw,56px);
  padding-bottom:clamp(30px,4vw,48px);
}
.footer-brand__name{
  display:inline-block;
  margin-bottom:12px;
  font-family:var(--font-display);
  font-size:clamp(20px,2.4vw,26px);
  font-weight:700;
  letter-spacing:.1em;
  color:var(--paper);
  text-decoration:none;
  transition:color .2s var(--ease);
}
.footer-brand__name:hover{color:var(--mist-gold);}
.footer-brand__tag{
  max-width:30ch;
  margin:0 0 14px;
  font-size:14px;
  line-height:1.8;
  color:var(--paper-58);
}
.footer-brand__coord{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:rgba(232,211,163,.55);
}
.footer-title{
  margin:0 0 16px;
  padding-bottom:8px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--gilt);
  border-bottom:1px solid rgba(212,166,74,.24);
}
.footer-nav__list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px 20px;
}
.footer-nav__list a{
  display:inline-block;
  padding-bottom:2px;
  font-size:14.5px;
  color:var(--paper-72);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-nav__list a:hover{
  color:var(--paper);
  border-bottom-color:var(--gilt);
}
.footer-contact__list{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin:0 0 18px;
}
.footer-contact__list li{
  font-size:14px;
  line-height:1.7;
  color:var(--paper-72);
  word-break:break-word;
}
.footer-contact__label{
  display:block;
  margin-bottom:2px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:rgba(232,211,163,.62);
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:18px 0 26px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--paper-58);
  border-top:1px solid rgba(212,166,74,.2);
}
.footer-base__copy{margin:0;}
.footer-base__links{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
}
.footer-base__links a{
  color:var(--paper-72);
  text-decoration:none;
  border-bottom:1px solid rgba(212,166,74,.3);
  padding-bottom:1px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-base__links a:hover{
  color:var(--paper);
  border-bottom-color:var(--gilt);
}

/* ---------- 滚动进度坐标轨 ---------- */
.scroll-rail{
  position:fixed;
  top:0;right:0;
  z-index:120;
  width:3px;
  height:100%;
  background:rgba(212,166,74,.12);
  pointer-events:none;
}
.scroll-rail__fill{
  display:block;
  width:100%;
  height:0;
  background:linear-gradient(180deg,var(--gilt),var(--vermilion));
  transition:height .08s linear;
}

/* ---------- 显现 ---------- */
[data-reveal][data-reveal-ready]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .38s var(--ease),transform .38s var(--ease);
}
[data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:900px){
  .header-rail{padding-top:12px;}
  .header-rail .rail-link{display:none;}
  .nav-toggle{display:inline-flex;}
  .masthead{
    grid-template-columns:minmax(0,1fr);
    justify-items:center;
    row-gap:16px;
    padding-bottom:18px;
  }
  .masthead__aside--left{display:none;}
  .masthead__aside--right{
    flex-direction:row;
    align-items:center;
    gap:14px;
  }
  .site-nav{
    display:none;
    border-top:1px solid rgba(212,166,74,.26);
  }
  .site-nav[data-open]{display:block;}
  .nav-list{
    flex-direction:column;
    justify-content:flex-start;
    padding:6px 0 12px;
  }
  .nav-list li{width:100%;}
  .nav-list a{
    width:100%;
    padding:14px 6px;
    font-size:15px;
    letter-spacing:.12em;
    border-bottom:1px dashed rgba(212,166,74,.18);
  }
  .nav-list a::after{display:none;}
  .nav-list a[aria-current="page"]{
    background:rgba(200,50,43,.18);
    box-shadow:inset 3px 0 0 var(--vermilion);
  }
  .scroll-rail{width:2px;}
}

@media (max-width:640px){
  body{font-size:16px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px;}
  .footer-nav__list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-base{flex-direction:column;align-items:flex-start;}
  .btn{padding:12px 20px;font-size:14px;}
  .btn--sm{padding:8px 14px;font-size:12.5px;}
}

/* ---------- 动效与打印 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal][data-reveal-ready]{
    opacity:1;
    transform:none;
  }
  .scroll-rail__fill{transition:none;}
  .btn:hover{transform:none;}
}

@media print{
  body{background:#fff;color:#111;}
  .site-header,.site-footer,.scroll-rail,.nav-toggle,.skip-link,.btn{display:none !important;}
  .prose{color:#111;max-width:none;}
  a{color:#111;text-decoration:underline;}
}