*,*::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:16px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{display:block;max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px}
::selection{background:var(--orange);color:var(--ink)}

:root{
  --ink:#071A14;
  --ink-2:#0C2A20;
  --ink-3:#123D2C;
  --orange:#FF6B1A;
  --orange-2:#FF9A5C;
  --orange-deep:#B33F00;
  --blue:#2F7DFF;
  --blue-soft:#9CC0FF;
  --paper:#F7F3EA;
  --steel:#8C9490;
  --steel-2:#3A4540;
  --mint:#2ED47A;
  --rail-w:252px;
  --topbar-h:60px;
  --pad-x:clamp(18px,4vw,64px);
  --dur:.2s;
  --font-display:"Songti SC","Source Han Serif SC","Noto Serif CJK SC",Georgia,"Times New Roman",serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-data:ui-monospace,"SF Mono","Cascadia Mono",Menlo,Consolas,"Roboto Mono",monospace;
}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:300;
  padding:10px 18px;background:var(--orange);color:var(--ink);
  font-weight:800;letter-spacing:.08em;border:2px solid var(--ink);
  transform:translateY(-180%);transition:transform var(--dur) ease;
}
.skip-link:focus{transform:translateY(0)}

/* ---------- header shell ---------- */
.site-header{position:relative;z-index:90}

/* ---------- mobile topbar ---------- */
.topbar{display:none}
.topbar-brand{
  display:inline-flex;align-items:baseline;gap:8px;
  font-family:var(--font-display);font-weight:800;font-size:18px;letter-spacing:.16em;color:var(--paper);
}
.topbar-brand span{
  font-family:var(--font-data);font-weight:600;font-size:10px;letter-spacing:.2em;color:var(--orange);
}
.nav-toggle{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 13px;border:2px solid var(--steel-2);background:var(--ink);
  font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--paper);
  transition:border-color var(--dur) ease,color var(--dur) ease;
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange-2)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:2px;background:var(--orange);transition:background var(--dur) ease}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--orange);
  transition:transform var(--dur) ease;
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.site-header[data-open="true"] .nav-toggle__bars{background:transparent}
.site-header[data-open="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}

.nav-scrim{display:none}

/* ---------- side rail ---------- */
.site-rail{
  position:fixed;top:0;bottom:0;left:0;width:var(--rail-w);z-index:120;
  display:flex;flex-direction:column;
  padding:26px 22px 18px;
  background:
    repeating-linear-gradient(135deg,rgba(255,255,255,.022) 0 2px,transparent 2px 22px),
    linear-gradient(180deg,var(--ink) 0%,var(--ink-2) 62%,#0A2318 100%);
  border-right:3px solid var(--steel-2);
}
.site-rail::after{
  content:"";position:absolute;top:0;right:0;width:3px;height:190px;
  background:linear-gradient(180deg,var(--orange),rgba(255,107,26,0));
  pointer-events:none;
}
.rail-brand{
  display:grid;grid-template-columns:auto 1fr;
  grid-template-areas:"mark title" "mark line";
  column-gap:12px;align-items:center;
  padding-bottom:18px;border-bottom:1px dashed var(--steel-2);
}
.rail-brand__mark{
  grid-area:mark;width:44px;height:44px;display:grid;place-items:center;
  background:var(--orange);color:var(--ink);
  font-family:var(--font-data);font-weight:700;font-size:15px;letter-spacing:.04em;
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.rail-brand__title{
  grid-area:title;font-family:var(--font-display);font-weight:800;
  font-size:21px;line-height:1.2;letter-spacing:.14em;color:var(--paper);
}
.rail-brand__line{
  grid-area:line;font-size:11px;letter-spacing:.2em;color:var(--steel);
}

.rail-login{
  display:block;margin-top:18px;padding:12px 14px;
  background:var(--orange);color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:5px 5px 0 rgba(0,0,0,.55);
  transition:transform var(--dur) ease,box-shadow var(--dur) ease;
}
.rail-login:hover,.rail-login:focus-visible{transform:translate(-2px,-2px);box-shadow:7px 7px 0 rgba(0,0,0,.55)}
.rail-login__label{display:block;font-weight:800;font-size:17px;letter-spacing:.1em}
.rail-login__hint{display:block;margin-top:2px;font-size:11px;letter-spacing:.14em;color:#3A1A05}

.rail-nav{flex:1 1 auto;min-height:0;margin-top:22px;overflow-y:auto;padding-right:2px}
.rail-nav__list{display:flex;flex-direction:column;gap:2px;counter-reset:railnav}
.rail-nav__list li{counter-increment:railnav}
.rail-nav__list a{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 8px 11px 24px;
  font-size:15px;font-weight:500;color:#D8DCD7;
  border-left:2px solid transparent;
  transition:color var(--dur) ease,background var(--dur) ease,border-color var(--dur) ease;
}
.rail-nav__list a::before{
  content:"";position:absolute;left:8px;top:50%;width:0;height:2px;
  background:var(--orange);transform:translateY(-50%);
  transition:width var(--dur) ease;
}
.rail-nav__list a::after{
  content:counter(railnav,decimal-leading-zero);
  margin-left:auto;font-family:var(--font-data);font-size:11px;
  letter-spacing:.06em;color:var(--steel);
}
.rail-nav__list a:hover{color:var(--paper);background:rgba(255,255,255,.045)}
.rail-nav__list a:hover::before,
.rail-nav__list a:focus-visible::before{width:10px}
.rail-nav__list a[aria-current="page"]{
  color:var(--orange);font-weight:700;
  background:var(--ink-3);border-left-color:var(--orange);
}
.rail-nav__list a[aria-current="page"]::before{width:10px;background:var(--orange)}
.rail-nav__list a[aria-current="page"]::after{color:var(--orange-2)}

.rail-foot{
  flex:0 0 auto;margin-top:16px;padding-top:14px;
  border-top:1px dashed var(--steel-2);
  display:flex;flex-direction:column;gap:6px;
  font-family:var(--font-data);font-size:10.5px;letter-spacing:.04em;color:var(--steel);
}
.rail-foot__row{display:block;overflow-wrap:anywhere;line-height:1.5}
.rail-foot__row b{color:var(--orange-2);font-weight:600;margin-right:6px}
.rail-foot__icp{letter-spacing:.08em}

.rail-progress{flex:0 0 auto;height:3px;margin-top:12px;background:var(--steel-2);overflow:hidden}
.rail-progress__bar{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--orange),var(--orange-2))}

/* ---------- layout containers ---------- */
.site-main{display:block;min-height:60vh}
.shell{
  width:100%;max-width:1240px;margin:0 auto;
  padding:clamp(26px,4.4vw,72px) var(--pad-x);
}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-data);font-size:11.5px;letter-spacing:.12em;
  color:var(--steel);text-transform:uppercase;
}
.breadcrumb a{color:var(--steel);border-bottom:1px solid transparent;transition:color var(--dur) ease,border-color var(--dur) ease}
.breadcrumb a:hover{color:var(--orange-2);border-bottom-color:var(--orange-2)}
.breadcrumb__sep{color:var(--steel-2)}
.breadcrumb__current{color:var(--paper)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 22px;border:2px solid var(--paper);
  font-size:15px;font-weight:700;letter-spacing:.06em;
  transition:transform var(--dur) ease,box-shadow var(--dur) ease,background var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease;
}
.btn--primary{
  background:var(--orange);border-color:var(--orange);color:var(--ink);
  box-shadow:6px 6px 0 rgba(0,0,0,.5);
}
.btn--primary:hover{transform:translate(-2px,-2px);box-shadow:9px 9px 0 rgba(0,0,0,.5)}
.btn--ghost{background:transparent;color:var(--paper)}
.btn--ghost:hover{background:var(--paper);color:var(--ink)}
.btn--quiet{
  padding:9px 14px;border-color:var(--steel-2);
  font-size:13px;font-weight:600;color:var(--steel);
}
.btn--quiet:hover{color:var(--paper);border-color:var(--orange)}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid var(--steel-2);
  background:rgba(255,255,255,.02);
  font-family:var(--font-data);font-size:11px;letter-spacing:.12em;color:var(--steel);
}
.tag--accent{border-color:var(--orange);color:var(--orange);background:rgba(255,107,26,.08)}
.tag--blue{border-color:var(--blue);color:var(--blue-soft);background:rgba(47,125,255,.1)}
.tag--mint{border-color:var(--mint);color:var(--mint);background:rgba(46,212,122,.08)}

/* ---------- section head ---------- */
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px;padding-bottom:12px;margin-bottom:clamp(20px,3vw,36px);
  border-bottom:3px solid var(--steel-2);
}
.section-head__title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.15;letter-spacing:.02em;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.2em;
  color:var(--orange);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange)}

/* ---------- dossier card ---------- */
.dossier{
  position:relative;padding:22px;
  background:var(--ink-2);border:2px solid var(--steel-2);
  box-shadow:8px 8px 0 rgba(0,0,0,.45);
}
.dossier::before{content:"";position:absolute;top:0;left:0;width:64px;height:4px;background:var(--orange)}
.dossier__head{
  display:flex;justify-content:space-between;align-items:flex-start;gap:12px;
  margin-bottom:14px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.14em;color:var(--steel);
}
.dossier__body{font-size:15px;color:#D9DED8}
.dossier--paper{background:var(--paper);border-color:var(--ink);color:var(--ink);box-shadow:8px 8px 0 rgba(7,26,20,.22)}
.dossier--paper .dossier__head{color:#5A6660}
.dossier--paper .dossier__body{color:#1C2A24}

/* ---------- stats ---------- */
.stat{display:flex;flex-direction:column;gap:3px}
.stat__value{
  font-family:var(--font-data);font-weight:700;line-height:1;
  font-size:clamp(2rem,5vw,3.6rem);letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.stat__label{font-family:var(--font-data);font-size:11.5px;letter-spacing:.16em;color:var(--steel);text-transform:uppercase}
.stat--accent .stat__value{color:var(--orange)}
.stat--blue .stat__value{color:var(--blue-soft)}

/* ---------- media ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16/10;
  background-color:var(--ink-3);
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.035) 0 12px,transparent 12px 24px);
  border:2px solid var(--steel-2);
}
.media img{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media__cap{
  position:absolute;left:0;bottom:0;padding:6px 10px;
  background:var(--ink);color:var(--orange);
  font-family:var(--font-data);font-size:10px;letter-spacing:.14em;
}

/* ---------- zones ---------- */
.zone{padding:clamp(28px,4vw,64px) 0}
.zone--ink2{background:var(--ink-2)}
.zone--paper{
  background:var(--paper);color:var(--ink);
  border-top:3px solid var(--ink);border-bottom:3px solid var(--ink);
}
.zone--paper .eyebrow{color:var(--orange-deep)}
.zone--paper .section-head{border-bottom-color:rgba(7,26,20,.24)}
.zone--paper .stat__label,.zone--paper .breadcrumb{color:#5A6660}

/* ---------- grids ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--rail{grid-template-columns:minmax(0,1fr) minmax(240px,310px);align-items:start}

/* ---------- filter ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.filter-btn{
  padding:8px 14px;border:2px solid var(--steel-2);
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--steel);
  transition:color var(--dur) ease,border-color var(--dur) ease,background var(--dur) ease,box-shadow var(--dur) ease;
}
.filter-btn:hover{color:var(--paper);border-color:var(--steel)}
.filter-btn[aria-pressed="true"]{
  background:var(--orange);border-color:var(--orange);color:var(--ink);
  box-shadow:4px 4px 0 rgba(0,0,0,.45);
}
.is-hidden{display:none !important}

/* ---------- horizontal scroll rail ---------- */
.hscroll{
  display:flex;gap:clamp(14px,2vw,22px);
  overflow-x:auto;padding:4px 2px 18px;
  scroll-snap-type:x mandatory;
  scrollbar-color:var(--orange) var(--steel-2);
}
.hscroll > *{flex:0 0 clamp(240px,32vw,340px);scroll-snap-align:start}
.hscroll:focus-visible{outline:2px solid var(--orange);outline-offset:4px}
.hscroll::-webkit-scrollbar{height:6px}
.hscroll::-webkit-scrollbar-track{background:var(--steel-2)}
.hscroll::-webkit-scrollbar-thumb{background:var(--orange)}

/* ---------- footer ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--ink-2);color:var(--paper);
  border-top:4px solid var(--orange);
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 2px,transparent 2px 28px),
    radial-gradient(120% 90% at 12% 0%,rgba(47,125,255,.10),transparent 60%);
}
.footer-shell{
  position:relative;
  display:grid;grid-template-columns:1.5fr .8fr 1.5fr;
  gap:clamp(20px,3vw,44px);
  max-width:1240px;margin:0 auto;
  padding:clamp(30px,4vw,56px) var(--pad-x);
}
.footer-brand__mark{
  display:inline-block;padding-bottom:6px;
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.5rem,2.6vw,2rem);letter-spacing:.16em;color:var(--paper);
  border-bottom:3px solid var(--orange);
}
.footer-brand__line{margin-top:14px;max-width:32ch;font-size:14px;line-height:1.7;color:#C6CDC7}
.footer-brand__stamp{
  display:inline-block;margin-top:16px;padding:4px 10px;
  border:1px solid var(--steel-2);
  font-family:var(--font-data);font-size:10px;letter-spacing:.2em;color:var(--steel);
}
.footer-nav__list{display:flex;flex-direction:column;gap:9px;font-size:14px}
.footer-nav__list a{
  width:fit-content;color:#C6CDC7;
  border-bottom:1px solid transparent;
  transition:color var(--dur) ease,border-color var(--dur) ease;
}
.footer-nav__list a:hover{color:var(--orange);border-bottom-color:var(--orange)}
.footer-contact{display:flex;flex-direction:column;gap:9px;font-size:13.5px;line-height:1.6;color:#C6CDC7}
.footer-contact__row{display:flex;gap:10px;align-items:flex-start}
.footer-contact__key{
  flex:0 0 42px;padding-top:3px;
  font-family:var(--font-data);font-size:10.5px;letter-spacing:.14em;color:var(--orange);
}
.footer-contact__val{overflow-wrap:anywhere}
.footer-base{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 22px;padding:16px var(--pad-x);
  border-top:1px dashed var(--steel-2);
  font-family:var(--font-data);font-size:11px;letter-spacing:.1em;color:var(--steel);
}
.footer-base__icp{color:#B9C1BB}
.footer-base__code{color:var(--steel-2)}

/* ---------- tablet ---------- */
@media (max-width:960px){
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:var(--topbar-h);z-index:100;
    padding:0 16px;
    background:var(--ink-2);border-bottom:3px solid var(--steel-2);
  }
  .site-main{padding-top:var(--topbar-h)}
  .site-rail{
    width:min(86vw,318px);z-index:130;
    padding:18px 18px 16px;
    transform:translateX(-102%);
    transition:transform .26s cubic-bezier(.2,.8,.2,1);
    box-shadow:16px 0 44px rgba(0,0,0,.55);
  }
  .site-header[data-open="true"] .site-rail{transform:translateX(0)}
  .nav-scrim{
    display:none;position:fixed;inset:0;z-index:110;
    background:rgba(3,12,9,.66);
    backdrop-filter:blur(2px);
  }
  .site-header[data-open="true"] .nav-scrim{display:block}
  .footer-shell{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1 / -1}
  .grid--rail{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:900px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
}

/* ---------- phone ---------- */
@media (max-width:640px){
  body{font-size:15.5px}
  .footer-shell{grid-template-columns:1fr}
  .footer-base{justify-content:flex-start;gap:8px 18px}
  .filter-bar{gap:6px}
  .filter-btn{padding:7px 11px;font-size:12px}
  .dossier{padding:18px;box-shadow:6px 6px 0 rgba(0,0,0,.4)}
}

/* ---------- desktop rail offset ---------- */
@media (min-width:961px){
  .site-main{padding-left:var(--rail-w)}
  .site-footer{padding-left:var(--rail-w)}
}

/* ---------- motion preference ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}