:root{
  --color-ink:#0F1A15;
  --color-moss:#5A7565;
  --color-stone:#3A3C3A;
  --color-terra:#B85C38;
  --color-cream:#F2E8DA;
  --color-gold:#C9A862;
  --color-crimson:#8E2F1F;
  --color-sage:#A6C1B6;
  --color-bg:#0F1A15;
  --color-bg-alt:#13221B;
  --color-panel:#1B2B22;
  --color-line:rgba(201,168,98,.28);
  --color-line-soft:rgba(90,117,101,.35);
  --text-body:#F2E8DA;
  --text-muted:#9AAFA4;
  --text-dark:#1A241F;
  --font-display:"Noto Serif SC",serif;
  --font-body:"Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --header-h:72px;
  --container:1440px;
  --grid-gap:24px;
  --radius:2px;
  --shadow-soft:0 12px 32px rgba(4,8,6,.5);
  --speed:240ms ease;
  --max-text:72ch;
  --ease:cubic-bezier(.22,.68,0,1.15);
}
*,
*::before,
*::after{
  box-sizing:border-box;
  margin:0;
  padding:0;
}
html{
  scroll-behavior:smooth;
  background:var(--color-bg);
}
@media (prefers-reduced-motion:reduce){
  html{
    scroll-behavior:auto;
  }
}
body{
  font-family:var(--font-body);
  font-weight:400;
  font-size:15px;
  line-height:1.85;
  color:var(--text-body);
  background:
    radial-gradient(circle at 88% 4%,rgba(201,168,98,.08),transparent 30%),
    linear-gradient(118deg,rgba(185,92,56,.05) 0%,transparent 28%),
    var(--color-bg);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,
svg,
video{
  display:block;
  max-width:100%;
}
a{
  color:var(--color-gold);
  text-decoration:none;
  transition:color var(--speed);
}
a:hover{
  color:var(--color-terra);
}
button{
  font:inherit;
  color:inherit;
  background:none;
  border:none;
  cursor:pointer;
}
ul,
ol{
  list-style:none;
}
:focus-visible{
  outline:2px solid var(--color-gold);
  outline-offset:4px;
  border-radius:2px;
}
.sr-only{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

/* ===== Skip Link ===== */
.skip-link{
  position:fixed;
  top:16px;
  left:-240px;
  z-index:2000;
  padding:10px 20px;
  background:var(--color-gold);
  color:var(--color-ink);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  border-radius:var(--radius);
  transition:left .28s ease;
}
.skip-link:focus{
  left:16px;
  color:var(--color-ink);
}

/* ===== Reading Progress ===== */
.reading-progress{
  position:fixed;
  top:0;
  left:0;
  width:0%;
  height:2px;
  z-index:1200;
  background:linear-gradient(90deg,var(--color-moss),var(--color-gold));
  box-shadow:0 0 12px rgba(201,168,98,.45);
  pointer-events:none;
  transition:width 60ms linear;
}
@media (prefers-reduced-motion:reduce){
  .reading-progress{
    display:none;
  }
}

/* ===== Header ===== */
.site-header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  z-index:1100;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(15,26,21,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:var(--color-line-soft);
  box-shadow:0 1px 0 rgba(201,168,98,.12),0 12px 32px rgba(4,8,6,.5);
}
.header-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  height:var(--header-h);
  display:flex;
  align-items:center;
  gap:24px;
}
.brand-lockup{
  display:flex;
  align-items:center;
  gap:14px;
  margin-right:auto;
  min-width:0;
  color:var(--text-body);
}
.brand-mark{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  border:1px solid var(--color-gold);
  background:linear-gradient(135deg,rgba(201,168,98,.14),rgba(201,168,98,.04));
  clip-path:polygon(0 10%,10% 0,100% 0,100% 88%,88% 100%,0 100%);
}
.brand-mark-suit{
  position:absolute;
  left:5px;
  top:2px;
  font-size:14px;
  color:var(--color-terra);
  line-height:1;
}
.brand-mark-index{
  font-family:var(--font-display);
  font-weight:300;
  font-size:20px;
  letter-spacing:-.02em;
  color:var(--color-gold);
}
.brand-lockup .brand-name{
  font-family:var(--font-display);
  font-weight:300;
  font-size:24px;
  letter-spacing:.12em;
  color:var(--text-body);
  white-space:nowrap;
  transition:color var(--speed);
}
.brand-lockup .brand-sub{
  font-size:10px;
  letter-spacing:.34em;
  text-transform:uppercase;
  color:var(--text-muted);
  margin-top:2px;
  white-space:nowrap;
}
.brand-lockup:hover .brand-name{
  color:var(--color-gold);
}

/* ===== Navigation ===== */
.site-nav{
  display:block;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  position:relative;
  display:block;
  padding:8px 14px;
  font-size:14px;
  letter-spacing:.06em;
  color:rgba(242,232,218,.82);
  border:1px solid transparent;
  border-radius:2px;
  transition:color .24s ease,border-color .24s ease,background .24s ease;
}
.nav-link:hover{
  color:var(--color-gold);
  border-color:rgba(201,168,98,.32);
  background:rgba(201,168,98,.06);
}
.nav-link[aria-current="page"]{
  color:var(--color-gold);
}
.nav-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:1px;
  background:linear-gradient(90deg,var(--color-gold),transparent);
}
.header-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  white-space:nowrap;
  padding:9px 20px;
  font-size:13px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--color-gold);
  background:rgba(185,92,56,.1);
  border:1px solid var(--color-gold);
  border-radius:2px;
  transition:background .24s ease,color .24s ease,box-shadow .24s ease;
}
.header-cta:hover{
  background:var(--color-terra);
  color:var(--color-cream);
  box-shadow:0 0 24px rgba(185,92,56,.3);
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  flex-direction:column;
  gap:6px;
  border:1px solid var(--color-line-soft);
  background:rgba(15,26,21,.4);
  border-radius:2px;
}
.nav-toggle-line{
  width:20px;
  height:1.5px;
  background:var(--color-gold);
  transition:transform .24s ease,opacity .24s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1){
  transform:translateY(7.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2){
  opacity:0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3){
  transform:translateY(-7.5px) rotate(-45deg);
}

/* ===== Footer ===== */
.site-footer{
  position:relative;
  background:
    linear-gradient(180deg,transparent,rgba(26,36,31,.85)),
    var(--color-ink);
  border-top:1px solid var(--color-line);
  margin-top:120px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  width:100%;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--color-gold),transparent);
  opacity:.5;
}
.footer-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:72px 32px 48px;
  display:grid;
  grid-template-columns:2.2fr 1.2fr 1.6fr;
  gap:56px 64px;
}
.footer-logo{
  display:inline-block;
  font-family:var(--font-display);
  font-weight:300;
  font-size:28px;
  letter-spacing:.14em;
  color:var(--color-gold);
  padding-bottom:12px;
  position:relative;
}
.footer-logo::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:56px;
  height:1px;
  background:var(--color-terra);
}
.footer-tagline{
  margin-top:16px;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--color-sage);
}
.footer-trust{
  margin-top:18px;
  max-width:38em;
  font-size:13px;
  line-height:1.9;
  color:var(--text-muted);
  border-left:2px solid var(--color-moss);
  padding-left:16px;
}
.footer-heading{
  font-size:12px;
  font-weight:500;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--color-gold);
  margin-bottom:22px;
  position:relative;
  display:inline-block;
}
.footer-heading::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-8px;
  width:100%;
  height:1px;
  background:linear-gradient(90deg,var(--color-moss),transparent);
}
.footer-nav-list li,
.footer-contact-list li{
  margin-bottom:10px;
}
.footer-nav-list a{
  font-size:14px;
  color:rgba(242,232,218,.78);
  letter-spacing:.04em;
  padding-left:14px;
  position:relative;
  transition:color .24s ease,padding-left .24s ease;
}
.footer-nav-list a::before{
  content:"→";
  position:absolute;
  left:0;
  color:var(--color-gold);
  font-size:12px;
  opacity:.6;
}
.footer-nav-list a:hover{
  color:var(--color-gold);
  padding-left:20px;
}
.footer-contact-list{
  font-size:13px;
  color:var(--text-muted);
  line-height:1.8;
}
.footer-note{
  margin-top:16px;
  font-size:12px;
  color:var(--color-sage);
  letter-spacing:.1em;
}
.footer-legal{
  border-top:1px solid rgba(201,168,98,.12);
  background:rgba(5,10,8,.65);
}
.footer-legal-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:22px 32px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 32px;
  font-size:12px;
  color:var(--text-muted);
}
.footer-icp{
  color:rgba(166,193,182,.8);
  letter-spacing:.1em;
}
.footer-legal-links{
  margin-left:auto;
  display:flex;
  gap:20px;
}
.footer-legal-links a{
  color:var(--text-muted);
}
.footer-legal-links a:hover{
  color:var(--color-gold);
}

/* ===== Content Grid & Layout ===== */
.main-content{
  min-height:60vh;
}
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.content-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:var(--grid-gap);
}
.content-grid .col-index{
  grid-column:span 2;
}
.content-grid .col-wide{
  grid-column:span 10;
}
.content-grid .col-auto{
  grid-column:span 6;
}
.section-block{
  padding:96px 0 0;
  position:relative;
}
.section-index{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:36px;
}
.section-index .section-index-num{
  font-family:var(--font-display);
  font-size:12px;
  letter-spacing:.24em;
  color:var(--color-gold);
}
.section-index .section-index-line{
  width:48px;
  height:1px;
  background:var(--color-line);
}
.section-index .section-index-label{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--text-muted);
}
.section-title{
  font-family:var(--font-display);
  font-weight:300;
  font-size:clamp(32px,5vw,64px);
  line-height:1.1;
  letter-spacing:.05em;
  color:var(--text-body);
  margin-bottom:24px;
}
.section-title em{
  font-style:normal;
  color:var(--color-gold);
}
.section-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--text-body);
  max-width:48em;
}
.text-muted{
  color:var(--text-muted);
}
.text-sm{
  font-size:13px;
}
.text-gold{
  color:var(--color-gold);
}
.mt-1{
  margin-top:8px;
}
.mt-2{
  margin-top:16px;
}
.mt-3{
  margin-top:32px;
}
.mb-2{
  margin-bottom:16px;
}
.mb-3{
  margin-bottom:32px;
}
.mb-4{
  margin-bottom:48px;
}

/* ===== Common Components ===== */
.panel-surface{
  background:linear-gradient(145deg,rgba(27,43,34,.82),rgba(15,26,21,.92));
  border:1px solid var(--color-line-soft);
  border-radius:var(--radius);
  padding:32px;
  position:relative;
  box-shadow:var(--shadow-soft);
  transition:border-color .28s ease,transform .28s ease,box-shadow .28s ease;
}
.panel-surface:hover{
  border-color:var(--color-line);
  box-shadow:0 16px 44px rgba(4,8,6,.62);
}
.panel-surface::before{
  content:"";
  position:absolute;
  top:-1px;
  left:24px;
  width:48px;
  height:2px;
  background:linear-gradient(90deg,var(--color-gold),transparent);
}
.route-button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 28px;
  font-size:14px;
  letter-spacing:.18em;
  color:var(--color-gold);
  border:1px solid var(--color-gold);
  background:transparent;
  border-radius:2px;
  position:relative;
  transition:background .24s ease,color .24s ease,box-shadow .24s ease,transform .24s ease;
  text-align:center;
  white-space:nowrap;
}
.route-button:hover{
  background:var(--color-terra);
  border-color:var(--color-terra);
  color:var(--color-cream);
  box-shadow:0 8px 28px rgba(185,92,56,.3);
  transform:translateY(-1px);
}
.route-button.is-ghost{
  background:rgba(201,168,98,.06);
}
.route-button.is-ghost:hover{
  background:rgba(201,168,98,.14);
  border-color:var(--color-gold);
  color:var(--color-gold);
}
.tag-list{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.tag-list li{
  font-size:12px;
  letter-spacing:.12em;
  padding:5px 14px;
  color:var(--color-sage);
  border:1px solid var(--color-line-soft);
  background:rgba(90,117,101,.14);
  border-radius:2px;
  white-space:nowrap;
}
.tag-list li:hover{
  border-color:var(--color-gold);
  color:var(--color-gold);
  cursor:default;
}
.stat-label{
  display:block;
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--text-muted);
  margin-bottom:8px;
}
.stat-value{
  font-family:var(--font-display);
  font-weight:300;
  font-size:32px;
  line-height:1;
  color:var(--color-sage);
  letter-spacing:.02em;
}
.stat-value strong{
  color:var(--color-gold);
  font-weight:300;
}
.trust-strip{
  margin-top:80px;
  padding:32px 0;
  background:
    linear-gradient(90deg,rgba(90,117,101,.16),rgba(15,26,21,0)),
    var(--color-bg-alt);
  border-top:1px solid var(--color-line-soft);
  border-bottom:1px solid var(--color-line-soft);
}
.trust-strip-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  display:flex;
  flex-wrap:wrap;
  gap:24px 64px;
  align-items:center;
}
.trust-strip-inner p{
  font-size:14px;
  color:var(--text-muted);
  letter-spacing:.08em;
  display:flex;
  align-items:center;
  gap:12px;
}
.trust-strip-inner p span{
  color:var(--color-gold);
  font-size:18px;
}

/* ===== Image Frame Placeholder ===== */
.image-frame{
  position:relative;
  width:100%;
  overflow:hidden;
  background:linear-gradient(145deg,rgba(90,117,101,.18),rgba(15,26,21,.3));
  border:1px solid var(--color-line-soft);
  border-radius:2px;
}
.image-frame[data-ratio="4:3"]{
  aspect-ratio:4/3;
}
.image-frame[data-ratio="16:9"]{
  aspect-ratio:16/9;
}
.image-frame[data-ratio="1:1"]{
  aspect-ratio:1/1;
}
.image-frame::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:
    linear-gradient(135deg,transparent 74%,rgba(201,168,98,.12) 74%,rgba(201,168,98,.2) 76%,transparent 76%),
    linear-gradient(45deg,transparent 82%,rgba(242,232,218,.05) 82%,rgba(242,232,218,.1) 83%,transparent 83%);
  pointer-events:none;
}
.image-frame::after{
  content:attr(data-ratio);
  position:absolute;
  right:10px;
  bottom:8px;
  font-size:11px;
  letter-spacing:.2em;
  color:rgba(201,168,98,.85);
  background:rgba(15,26,21,.7);
  padding:2px 8px;
  border:1px solid var(--color-line-soft);
}

/* ===== Breadcrumb ===== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-muted);
  padding:24px 0 8px;
}
.breadcrumb a{
  color:var(--color-sage);
  letter-spacing:.06em;
}
.breadcrumb a:hover{
  color:var(--color-gold);
}
.breadcrumb span{
  color:var(--color-gold);
}
.breadcrumb .current{
  color:var(--text-body);
}

/* ===== Reveal Animation ===== */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
}
[data-reveal].is-visible{
  opacity:1;
  transform:none;
}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{
    opacity:1;
    transform:none;
    transition:none;
  }
}

/* ===== Responsive ===== */
@media (max-width:1100px){
  .footer-inner{
    grid-template-columns:1fr 0.8fr;
  }
  .footer-brand{
    grid-column:span 2;
  }
}
@media (max-width:900px){
  .header-inner{
    padding:0 20px;
  }
  .brand-sub{
    display:none;
  }
  .site-nav{
    position:fixed;
    top:var(--header-h);
    left:0;
    width:100%;
    max-height:0;
    overflow:hidden;
    background:rgba(15,26,21,.98);
    border-bottom:1px solid transparent;
    transition:max-height .38s ease,border-color .38s ease,padding .38s ease;
  }
  .site-nav[data-open]{
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    padding:24px 20px 32px;
    border-bottom-color:var(--color-line);
  }
  .nav-list{
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
  }
  .nav-link{
    font-size:19px;
    padding:14px 8px;
    color:var(--text-body);
  }
  .nav-link[aria-current="page"]::after{
    left:8px;
    right:auto;
    width:32px;
  }
  .header-cta{
    display:none;
  }
  .nav-toggle{
    display:inline-flex;
    margin-left:auto;
  }
  .content-grid .col-index,
  .content-grid .col-wide,
  .content-grid .col-auto{
    grid-column:span 12;
  }
  .section-block{
    padding-top:72px;
  }
}
@media (max-width:600px){
  .header-inner{
    height:64px;
    padding:0 16px;
  }
  :root{
    --header-h:64px;
  }
  .brand-mark{
    width:38px;
    height:38px;
  }
  .brand-mark-index{
    font-size:16px;
  }
  .brand-lockup .brand-name{
    font-size:20px;
  }
  .reading-progress{
    top:0;
  }
  .container,
  .header-inner,
  .footer-inner,
  .footer-legal-inner,
  .trust-strip-inner{
    padding-left:16px;
    padding-right:16px;
  }
  .footer-inner{
    grid-template-columns:1fr;
    gap:40px;
    padding-top:56px;
  }
  .footer-brand{
    grid-column:auto;
  }
  .footer-legal-inner{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
  }
  .footer-legal-links{
    margin-left:0;
    flex-wrap:wrap;
    gap:12px;
  }
  .panel-surface{
    padding:24px;
  }
  .section-title{
    font-size:34px;
  }
  .route-button{
    width:100%;
  }
}