:root{
  --ink:#0C0C0C;
  --warm-paper:#F5E6C4;
  --gold:#D4AF37;
  --gold-bright:#E9CC72;
  --deep-red:#8B0000;
  --gray:#3D3D3D;
  --silver:#C0C0C0;
  --light-paper:#F0E6D2;
  --carbon:#1A1A1A;
  --gold-soft:rgba(212,175,55,.22);
  --gold-faint:rgba(212,175,55,.08);
  --paper-dim:rgba(245,230,196,.7);
  --paper-faint:rgba(245,230,196,.45);
  --content-max:1360px;
  --header-h:76px;
  --font-serif:"Songti SC","Noto Serif SC","Times New Roman",Georgia,serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
  --font-mono:"SF Mono","Cascadia Code",Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}

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

body{
  display:flex;
  flex-direction:column;
  min-height:100vh;
  background:var(--ink);
  color:var(--silver);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

::selection{
  background:var(--gold);
  color:var(--ink);
}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-serif);
  font-weight:600;
  line-height:1.25;
  color:var(--warm-paper);
}

a{
  color:var(--gold);
  text-decoration:none;
  transition:color .25s;
}

a:hover{
  color:var(--gold-bright);
}

strong,b{font-weight:600;}

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

ul,ol{list-style:none;}

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

:focus{outline:none;}
:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
}

#main-content{
  flex:1 0 auto;
  scroll-margin-top:calc(var(--header-h) + 24px);
}

.skip-link{
  position:fixed;
  top:12px;
  left:12px;
  z-index:220;
  padding:10px 20px;
  background:var(--gold);
  color:var(--ink);
  font-size:14px;
  font-weight:600;
  letter-spacing:.1em;
  transform:translateY(calc(-100% - 24px));
  transition:transform .25s var(--ease);
}

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

.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:210;
  pointer-events:none;
  background:var(--gold-faint);
}

.scroll-progress::after{
  content:"";
  display:block;
  height:100%;
  width:100%;
  background:linear-gradient(90deg,var(--deep-red) 0%,var(--gold) 45%,var(--gold-bright) 100%);
  transform:scaleX(var(--progress,0));
  transform-origin:0 50%;
}

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(12,12,12,.96);
  border-bottom:1px solid rgba(212,175,55,.3);
}

.site-header__inner{
  max-width:var(--content-max);
  margin:0 auto;
  padding:0 32px;
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
}

.site-header__brand{
  display:flex;
  align-items:center;
  gap:14px;
  flex-shrink:0;
}

.site-header__brand-mark{
  width:12px;
  height:12px;
  flex:0 0 12px;
  background:linear-gradient(135deg,var(--gold-bright),var(--gold) 60%,#8a6d1f);
  transform:rotate(45deg);
  box-shadow:0 0 12px rgba(212,175,55,.5);
}

.site-header__brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.25;
}

.site-header__brand-text strong{
  font-family:var(--font-serif);
  font-weight:600;
  font-size:1.4rem;
  letter-spacing:.22em;
  color:var(--warm-paper);
}

.site-header__brand-text small{
  font-size:.72rem;
  letter-spacing:.26em;
  color:var(--gold);
  margin-top:2px;
}

.site-header__nav{
  display:flex;
  align-items:center;
  gap:2px;
}

.site-header__nav a{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  color:#d5cec0;
  font-size:14px;
  letter-spacing:.14em;
  transition:color .25s;
}

.site-header__nav a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:1px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .3s var(--ease);
}

.site-header__nav a:hover{
  color:var(--gold);
}

.site-header__nav a:hover::after{
  transform:scaleX(1);
}

.site-header__nav a[aria-current="page"]{
  color:var(--gold);
}

.site-header__nav a[aria-current="page"]::after{
  transform:scaleX(1);
}

.site-header__toggle{
  display:none;
  width:46px;
  height:46px;
  flex:0 0 46px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border:1px solid rgba(212,175,55,.4);
  transition:border-color .25s;
}

.site-header__toggle:hover{
  border-color:var(--gold);
}

.site-header__toggle-line{
  display:block;
  width:22px;
  height:2px;
  background:var(--gold);
  transition:transform .3s var(--ease),opacity .3s;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2){
  opacity:0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}

.site-header__rule{
  position:absolute;
  left:0;
  bottom:-1px;
  width:320px;
  max-width:45%;
  height:3px;
  background:linear-gradient(90deg,var(--deep-red),var(--deep-red) 35%,var(--gold));
  clip-path:polygon(0 0,100% 0,calc(100% - 24px) 100%,0 100%);
  opacity:.85;
  pointer-events:none;
  z-index:1;
}

@keyframes nav-in{
  from{opacity:0;transform:translateY(-8px);}
  to{opacity:1;transform:translateY(0);}
}

.site-footer{
  position:relative;
  background:var(--carbon);
  border-top:1px solid rgba(212,175,55,.35);
}

.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  right:0;
  width:260px;
  height:4px;
  background:linear-gradient(90deg,var(--gold),var(--deep-red));
  clip-path:polygon(0 0,100% 0,76% 100%,0 100%);
  pointer-events:none;
}

.site-footer__inner{
  max-width:var(--content-max);
  margin:0 auto;
  padding:72px 32px 48px;
  display:grid;
  grid-template-columns:1.3fr .8fr 1.5fr;
  gap:48px;
  align-items:start;
}

.site-footer__brand strong{
  display:block;
  font-family:var(--font-serif);
  font-size:2rem;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--warm-paper);
  line-height:1.3;
}

.site-footer__brand p{
  margin-top:10px;
  color:var(--paper-faint);
  font-size:13px;
  letter-spacing:.24em;
}

.site-footer__links{
  display:flex;
  flex-direction:column;
  gap:4px;
}

.site-footer__links a{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:6px 0;
  color:var(--silver);
  font-size:14px;
  letter-spacing:.1em;
  transition:color .2s,transform .2s;
}

.site-footer__links a::before{
  content:"";
  width:8px;
  height:8px;
  flex:0 0 8px;
  transform:rotate(45deg);
  background:var(--gold);
  opacity:.7;
}

.site-footer__links a:hover{
  color:var(--gold);
  transform:translateX(4px);
}

.site-footer__contact p{
  font-size:14px;
  line-height:1.9;
  color:var(--paper-dim);
  margin-bottom:6px;
  letter-spacing:.02em;
}

.site-footer__contact strong{
  color:var(--gold);
  font-weight:500;
}

.site-footer__note{
  margin-top:8px;
  font-size:12.5px;
  color:var(--paper-faint);
  letter-spacing:.02em;
}

.site-footer__bottom{
  max-width:var(--content-max);
  margin:0 auto;
  border-top:1px solid rgba(212,175,55,.16);
  padding:20px 32px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:8px 24px;
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--paper-faint);
}

.back-to-top{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:120;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 18px;
  background:var(--gold);
  color:var(--ink);
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  border:1px solid rgba(12,12,12,.2);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s,background-color .2s;
}

.back-to-top:hover{
  background:var(--gold-bright);
}

.back-to-top.is-visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}

.container{
  width:100%;
  max-width:var(--content-max);
  margin:0 auto;
  padding:0 32px;
}

.section{
  padding:88px 0;
}

.section--tight{
  padding:48px 0;
}

.section--dark{
  background:var(--ink);
}

.section--carbon{
  background:var(--carbon);
}

.section--paper{
  background:var(--warm-paper);
  color:var(--ink);
}

.section-split{
  height:8px;
  background:var(--gold);
  clip-path:polygon(0 0,100% 0,96% 100%,2% 100%);
}

.section-split--red{
  background:var(--deep-red);
}

.section-split--reverse{
  transform:scaleX(-1);
}

.section-index{
  display:flex;
  align-items:center;
  gap:16px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.3em;
  color:var(--gold);
  text-transform:uppercase;
  margin-bottom:18px;
}

.section-index::before{
  content:"";
  width:48px;
  height:1px;
  flex:0 0 48px;
  background:var(--gold);
}

.section-index::after{
  content:"";
  width:8px;
  height:8px;
  flex:0 0 8px;
  background:var(--gold);
  transform:rotate(45deg);
}

.section--paper .section-index{
  color:var(--deep-red);
}

.section--paper .section-index::before{
  background:var(--deep-red);
}

.section--paper .section-index::after{
  background:var(--deep-red);
}

.section-title{
  font-family:var(--font-serif);
  font-weight:500;
  font-size:clamp(1.9rem,4vw,3.2rem);
  line-height:1.25;
  letter-spacing:.06em;
  color:var(--warm-paper);
  margin-bottom:18px;
}

.section--paper .section-title{
  color:var(--ink);
}

.section-desc{
  max-width:720px;
  font-size:17px;
  line-height:1.8;
  color:var(--paper-dim);
}

.section--paper .section-desc{
  color:rgba(12,12,12,.72);
}

.lead{
  font-size:1.15rem;
  line-height:1.8;
  color:var(--paper-dim);
  max-width:46em;
}

.section--paper .lead{
  color:rgba(12,12,12,.8);
}

.content-block{
  max-width:48em;
  color:var(--paper-dim);
  line-height:1.85;
}

.content-block p{
  margin-bottom:1.2em;
}

.content-block h2,
.content-block h3{
  margin-top:1.6em;
  margin-bottom:.6em;
  color:var(--warm-paper);
}

.content-block ul,
.content-block ol{
  margin-bottom:1.2em;
  padding-left:1.4em;
}

.content-block ul{
  list-style:square;
}

.content-block ul li::marker{
  color:var(--gold);
}

.content-block ol{
  list-style:decimal;
}

.content-block li{
  margin-bottom:.4em;
}

.content-block a{
  color:var(--gold);
  text-decoration:underline;
  text-underline-offset:3px;
}

.section--paper .content-block{
  color:rgba(12,12,12,.8);
}

.section--paper .content-block h2,
.section--paper .content-block h3{
  color:var(--ink);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:12px 30px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.16em;
  line-height:1.2;
  border:1px solid transparent;
  text-align:center;
  transition:background-color .25s,color .25s,border-color .25s,transform .2s;
}

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

.btn--primary{
  background:var(--gold);
  color:var(--ink);
}

.btn--primary:hover{
  background:var(--gold-bright);
  color:var(--ink);
}

.btn--ghost{
  border-color:rgba(212,175,55,.65);
  color:var(--gold);
}

.btn--ghost:hover{
  border-color:var(--gold);
  background:rgba(212,175,55,.1);
  color:var(--gold);
}

.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}

.post-card{
  position:relative;
  display:flex;
  flex-direction:column;
  padding:30px;
  background:var(--carbon);
  border:1px solid rgba(212,175,55,.16);
  transition:border-color .3s,transform .3s;
}

.post-card::after{
  content:"";
  position:absolute;
  top:-1px;
  left:-1px;
  width:0;
  height:3px;
  background:var(--gold);
  transition:width .35s var(--ease);
  pointer-events:none;
}

.post-card:hover{
  border-color:rgba(212,175,55,.5);
  transform:translateY(-4px);
}

.post-card:hover::after{
  width:64px;
}

.post-card--paper{
  background:var(--light-paper);
  border-color:rgba(12,12,12,.08);
  color:var(--ink);
}

.post-card--paper:hover{
  border-color:rgba(139,0,0,.4);
}

.post-card--paper::after{
  background:var(--deep-red);
}

.post-card__meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  color:var(--gold);
  text-transform:uppercase;
  margin-bottom:10px;
}

.post-card--paper .post-card__meta{
  color:var(--deep-red);
}

.post-card__title{
  font-family:var(--font-serif);
  font-size:1.35rem;
  line-height:1.35;
  color:var(--warm-paper);
  margin-bottom:10px;
}

.post-card--paper .post-card__title{
  color:var(--ink);
}

.post-card__text{
  font-size:14.5px;
  line-height:1.7;
  color:var(--paper-dim);
  margin-bottom:16px;
}

.post-card--paper .post-card__text{
  color:rgba(12,12,12,.72);
}

.post-card__tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:auto;
  padding-top:16px;
}

.tag{
  display:inline-flex;
  align-items:center;
  min-height:24px;
  padding:2px 10px;
  border:1px solid rgba(192,192,192,.5);
  color:var(--silver);
  font-size:12px;
  letter-spacing:.12em;
}

.tag--gold{
  border-color:rgba(212,175,55,.5);
  color:var(--gold);
}

.tag--red{
  border-color:rgba(139,0,0,.6);
  color:var(--deep-red);
}

.media{
  position:relative;
  overflow:hidden;
  background:linear-gradient(140deg,#202020 0%,#0e0e0e 60%,#181818 100%);
  border:1px solid rgba(212,175,55,.18);
}

.media::before{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(90deg,rgba(212,175,55,.045) 0 1px,transparent 1px 40px),
             repeating-linear-gradient(0deg,rgba(212,175,55,.045) 0 1px,transparent 1px 40px);
  z-index:1;
  pointer-events:none;
}

.media::after{
  content:"";
  position:absolute;
  right:-14px;
  top:-14px;
  width:72px;
  height:72px;
  background:var(--deep-red);
  clip-path:polygon(0 0,100% 0,100% 100%);
  opacity:.65;
  z-index:2;
  pointer-events:none;
}

.media--landscape{
  aspect-ratio:16/9;
}

.media--portrait{
  aspect-ratio:3/4;
}

.media--square{
  aspect-ratio:1/1;
}

.media img{
  position:relative;
  z-index:0;
  width:100%;
  height:100%;
  object-fit:cover;
}

.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:32px;
}

.breadcrumbs ul{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
}

.breadcrumbs li{
  display:flex;
  align-items:center;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--paper-faint);
}

.breadcrumbs li + li::before{
  content:"/";
  margin:0 10px;
  color:rgba(212,175,55,.45);
}

.breadcrumbs a{
  color:var(--gold);
}

.breadcrumbs a:hover{
  color:var(--gold-bright);
}

.breadcrumbs [aria-current="page"]{
  color:var(--silver);
}

@media (max-width:1024px){
  .site-header__inner{
    height:auto;
    min-height:68px;
    padding:10px 20px;
    flex-wrap:wrap;
  }

  .site-header__toggle{
    display:flex;
  }

  .site-header__nav{
    display:none;
    flex-basis:100%;
    flex-direction:column;
    align-items:stretch;
    margin-top:4px;
    padding-top:8px;
    border-top:1px solid rgba(212,175,55,.14);
  }

  .site-header__nav[data-open]{
    display:flex;
    animation:nav-in .25s var(--ease);
  }

  .site-header__nav a{
    display:block;
    padding:14px 2px;
    font-size:15px;
    letter-spacing:.2em;
    border-bottom:1px solid rgba(212,175,55,.08);
  }

  .site-header__nav a::after{
    display:none;
  }

  .site-header__nav a[aria-current="page"]{
    background:linear-gradient(90deg,rgba(212,175,55,.16),transparent 85%);
  }

  .site-header__rule{
    width:200px;
  }
}

@media (max-width:960px){
  .card-grid{
    grid-template-columns:repeat(2,1fr);
  }

  .site-footer__inner{
    grid-template-columns:1fr 1fr;
    gap:36px;
  }

  .site-footer__contact{
    grid-column:1 / -1;
  }
}

@media (max-width:768px){
  .container{
    padding:0 20px;
  }

  .section{
    padding:64px 0;
  }

  .site-footer__inner{
    grid-template-columns:1fr;
    gap:32px;
    padding:56px 20px 40px;
  }

  .site-footer__contact{
    grid-column:auto;
  }

  .site-footer__bottom{
    padding:16px 20px;
    flex-direction:column;
    align-items:flex-start;
  }

  .scroll-progress{
    height:2px;
  }

  .back-to-top{
    right:16px;
    bottom:16px;
    padding:10px 14px;
  }
}

@media (max-width:640px){
  .card-grid{
    grid-template-columns:1fr;
  }
}

@media (max-width:420px){
  .site-header__brand-text small{
    display: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;
    transition-delay:0s !important;
  }

  .site-header__nav[data-open]{
    animation:none;
  }
}