:root{
  --ink:#0A1523;
  --cabin:#10202F;
  --lane:#1E3346;
  --amber:#F2B23E;
  --signal:#FF5C2B;
  --steel:#7C93A8;
  --mist:#E8EEF3;
  --teal:#3FBFA0;
  --paper:#F4F1EA;
  --font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --w-max:1240px;
  --gutter:clamp(18px,4vw,48px);
  --radius:6px;
  --shadow:0 22px 48px -30px rgba(0,0,0,.92);
  --dur:200ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit}
body{
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--mist);
  letter-spacing:.01em;
  background-color:var(--ink);
  background-image:
    radial-gradient(880px 520px at 84% -10%, rgba(30,51,70,.62), transparent 72%),
    radial-gradient(680px 420px at -12% 8%, rgba(242,178,62,.07), transparent 70%),
    linear-gradient(to right, rgba(30,51,70,.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,51,70,.42) 1px, transparent 1px);
  background-size:auto,auto,72px 72px,72px 72px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{line-height:1.15;letter-spacing:-.02em;font-weight:800}
p{max-width:72ch}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}
.bd-main{display:block;min-height:40vh}
.bd-container{width:100%;max-width:var(--w-max);margin-inline:auto;padding-inline:var(--gutter)}

/* ---------- SKIP LINK ---------- */
.bd-skip{
  position:fixed;left:14px;top:-80px;z-index:200;
  padding:10px 16px;
  background:var(--amber);color:var(--ink);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;
  text-decoration:none;border-radius:0 0 6px 6px;
  transition:top 160ms ease;
}
.bd-skip:focus{top:0}

/* ---------- HEADER ---------- */
.bd-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink);
  border-bottom:1px solid var(--lane);
  transition:box-shadow var(--dur) ease;
}
.bd-header::before{
  content:"";display:block;height:3px;
  background:linear-gradient(90deg,var(--signal) 0 92px,var(--amber) 92px 214px,var(--lane) 214px 100%);
}
.bd-header.is-stuck{box-shadow:0 18px 36px -28px rgba(0,0,0,.95)}
.bd-header__top{
  position:relative;
  background:linear-gradient(180deg,#0C1B2B 0%,#0A1523 100%);
  border-bottom:1px solid var(--lane);
}
.bd-header__top::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:5px;
  background-image:repeating-linear-gradient(90deg,rgba(30,51,70,1) 0 1px,transparent 1px 16px);
  pointer-events:none;
}
.bd-header__top-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:clamp(12px,3vw,40px);
  padding-block:14px 18px;
  transition:padding var(--dur) ease;
}
.bd-header.is-stuck .bd-header__top-inner{padding-block:8px 10px}
.bd-brand{display:flex;align-items:center;gap:14px;min-width:0}
.bd-brand__mark{display:inline-flex;flex:none;text-decoration:none}
.bd-brand__glyph{
  width:44px;height:44px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--amber),#D08F26);
  color:var(--ink);font-weight:900;font-size:22px;line-height:1;
  clip-path:polygon(0 0,100% 0,100% 70%,72% 100%,0 100%);
  transition:transform var(--dur) ease,filter var(--dur) ease;
}
.bd-brand__mark:hover .bd-brand__glyph{transform:translateY(-2px);filter:brightness(1.08)}
.bd-brand__text{min-width:0}
.bd-brand__line{
  font-size:15px;font-weight:800;line-height:1.3;color:var(--mist);
  letter-spacing:-.01em;max-width:none;
}
.bd-brand__tagline{
  margin-top:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--steel);line-height:1.5;max-width:none;
  max-height:3em;overflow:hidden;
  transition:max-height 220ms ease,opacity 220ms ease;
}
.bd-header.is-stuck .bd-brand__tagline{max-height:0;opacity:0}
.bd-status{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;
  gap:6px 18px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;
  color:var(--steel);
}
.bd-status__item{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.bd-status__dot{width:7px;height:7px;border-radius:50%;background:var(--steel);flex:none}
.bd-status__dot--ok{background:var(--teal);box-shadow:0 0 0 3px rgba(63,191,160,.16)}
.bd-status__item--ver{
  color:var(--amber);border:1px solid rgba(242,178,62,.34);
  padding:1px 8px;border-radius:3px;
}
.bd-header__nav{position:relative;background:var(--cabin)}
.bd-header__nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;
  transition:min-height var(--dur) ease;
}
.bd-header.is-stuck .bd-header__nav-inner{min-height:46px}
.bd-header__cta{flex:none}

/* ---------- NAV ---------- */
.bd-nav{display:block;min-width:0}
.bd-nav__list{display:flex;align-items:center;gap:clamp(6px,1.7vw,28px);counter-reset:navi}
.bd-nav__item{counter-increment:navi;display:flex;min-width:0}
.bd-nav__link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:8px;
  padding:16px 2px 14px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  color:var(--mist);text-decoration:none;white-space:nowrap;
  transition:color var(--dur) ease,padding var(--dur) ease;
}
.bd-header.is-stuck .bd-nav__link{padding-block:11px 9px;font-size:14px}
.bd-nav__link::before{
  content:counter(navi,decimal-leading-zero);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.02em;
  color:var(--steel);transition:color var(--dur) ease;
}
.bd-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:7px;height:2px;
  background:var(--amber);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) ease;
}
.bd-nav__link:hover,.bd-nav__link:focus-visible{color:var(--amber)}
.bd-nav__link:hover::before,.bd-nav__link:focus-visible::before{color:var(--amber)}
.bd-nav__link:hover::after,.bd-nav__link:focus-visible::after{transform:scaleX(1)}
.bd-nav__link[aria-current="page"]{color:var(--amber);font-weight:800}
.bd-nav__link[aria-current="page"]::before{color:var(--amber)}
.bd-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--amber)}

/* ---------- NAV TOGGLE ---------- */
.bd-nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 12px;border:1px solid var(--lane);border-radius:4px;
  color:var(--mist);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;
  transition:border-color var(--dur) ease,color var(--dur) ease;
}
.bd-nav-toggle:hover{border-color:var(--amber);color:var(--amber)}
.bd-nav-toggle__bars{display:grid;gap:4px;width:16px}
.bd-nav-toggle__bars span{display:block;height:2px;background:currentColor;transition:transform 180ms ease,opacity 180ms ease}
.bd-nav-toggle__label{line-height:1}
.bd-header[data-open] .bd-nav-toggle{border-color:var(--amber);color:var(--amber)}
.bd-header[data-open] .bd-nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.bd-header[data-open] .bd-nav-toggle__bars span:nth-child(2){opacity:0}
.bd-header[data-open] .bd-nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- PROGRESS ---------- */
.bd-progress{height:2px;background:rgba(30,51,70,.85);overflow:hidden}
.bd-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--amber),var(--signal));
  transition:width 120ms linear;
}

/* ---------- BUTTONS ---------- */
.bd-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border-radius:3px;border:1px solid transparent;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;line-height:1.2;
  text-decoration:none;white-space:nowrap;
  transition:transform 160ms ease,background-color 160ms ease,color 160ms ease,border-color 160ms ease,box-shadow 160ms ease;
}
.bd-btn--primary{
  background:var(--signal);color:#160800;font-weight:700;
  box-shadow:0 12px 24px -16px rgba(255,92,43,.95);
}
.bd-btn--primary:hover{background:#FF7A4E;transform:translateY(-2px)}
.bd-btn--ghost{background:transparent;color:var(--amber);border-color:rgba(242,178,62,.45)}
.bd-btn--ghost:hover{background:rgba(242,178,62,.1);border-color:var(--amber);transform:translateY(-2px)}
.bd-btn--primary:active,.bd-btn--ghost:active{transform:translateY(0)}

/* ---------- TEXT UTILITIES ---------- */
.bd-display{font-size:clamp(34px,6vw,64px);line-height:1.08;letter-spacing:-.02em;font-weight:900;color:var(--mist);max-width:22ch}
.bd-h2{font-size:clamp(24px,3.4vw,40px);line-height:1.15;letter-spacing:-.02em;font-weight:900;color:var(--mist)}
.bd-h3{font-size:clamp(18px,2.2vw,22px);line-height:1.35;font-weight:800;color:var(--mist)}
.bd-lede{font-size:clamp(15px,1.4vw,18px);line-height:1.8;color:var(--steel);max-width:60ch}
.bd-mono{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;color:var(--amber)}
.bd-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  color:var(--amber);
}
.bd-eyebrow::before{content:"";width:22px;height:1px;background:var(--amber);flex:none}
.bd-rule{height:1px;border:0;margin-block:clamp(20px,3vw,32px);background:linear-gradient(90deg,var(--lane),rgba(30,51,70,0))}

/* ---------- SECTIONS & GRID ---------- */
.bd-section{padding-block:clamp(36px,5vw,72px)}
.bd-section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:12px 24px;
  margin-bottom:clamp(20px,3vw,32px);padding-bottom:14px;
  border-bottom:1px solid var(--lane);
}
.bd-section__title{font-size:clamp(20px,2.6vw,28px);line-height:1.2;letter-spacing:-.02em;font-weight:800;color:var(--mist)}
.bd-section__note{font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;color:var(--steel)}
.bd-grid{display:grid;gap:clamp(18px,2.4vw,24px)}
.bd-grid--7-4{grid-template-columns:7fr 4fr}
.bd-grid--3-6-3{grid-template-columns:3fr 6fr 3fr}

/* ---------- PANELS / CHIPS ---------- */
.bd-panel{
  position:relative;
  background:linear-gradient(160deg,var(--cabin),#0C1A28);
  border:1px solid var(--lane);border-radius:var(--radius);
  padding:clamp(18px,2.4vw,28px);
  box-shadow:var(--shadow);
}
.bd-panel::before{
  content:"";position:absolute;left:0;top:0;width:56px;height:2px;
  background:linear-gradient(90deg,var(--amber),transparent);
}
.bd-panel--paper{
  background:var(--paper);color:#16202B;border-color:#D9D2C4;box-shadow:none;
}
.bd-panel--paper .bd-h3,.bd-panel--paper h2,.bd-panel--paper h3{color:#101A26}
.bd-panel--paper .bd-lede,.bd-panel--paper p{color:#42505F}
.bd-panel--paper .bd-mono{color:#8A6A1F}
.bd-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border:1px solid var(--lane);border-radius:999px;
  background:rgba(16,32,47,.75);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--steel);
  white-space:nowrap;
}
.bd-chip--ok{color:var(--teal);border-color:rgba(63,191,160,.42)}
.bd-chip--amber{color:var(--amber);border-color:rgba(242,178,62,.42)}
.bd-chip--signal{color:var(--signal);border-color:rgba(255,92,43,.45)}

/* ---------- BREADCRUMB ---------- */
.bd-breadcrumb{margin-bottom:clamp(16px,2vw,26px)}
.bd-breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;color:var(--steel);
}
.bd-breadcrumb__item{display:inline-flex;align-items:center;gap:8px;min-width:0}
.bd-breadcrumb__item + .bd-breadcrumb__item::before{content:"/";color:var(--lane)}
.bd-breadcrumb__link{color:var(--steel);text-decoration:none;transition:color var(--dur) ease}
.bd-breadcrumb__link:hover{color:var(--amber)}
.bd-breadcrumb__current{color:var(--amber)}

/* ---------- MEDIA ---------- */
.bd-media{
  position:relative;display:block;width:100%;
  aspect-ratio:16/9;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--lane);
  background-color:var(--cabin);
  background-image:linear-gradient(140deg,rgba(30,51,70,.92),rgba(10,21,35,.96));
}
.bd-media::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(124,147,168,.16) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(124,147,168,.16) 1px,transparent 1px);
  background-size:26px 26px;
}
.bd-media::after{
  content:"";position:absolute;inset:10px;z-index:2;pointer-events:none;
  border:1px dashed rgba(242,178,62,.2);border-radius:4px;
}
.bd-media--wide{aspect-ratio:21/9}
.bd-media--tall{aspect-ratio:3/4}
.bd-media--map{
  aspect-ratio:16/10;
  background-image:
    radial-gradient(circle at 28% 32%,rgba(242,178,62,.16),transparent 58%),
    radial-gradient(circle at 74% 70%,rgba(255,92,43,.12),transparent 56%),
    linear-gradient(140deg,rgba(30,51,70,.95),rgba(10,21,35,.98));
}
.bd-media__img{
  position:relative;z-index:1;
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.9) contrast(1.02);
}
.bd-media__caption{
  position:absolute;left:0;bottom:0;z-index:3;
  margin:0;padding:6px 11px;
  background:rgba(10,21,35,.86);
  color:var(--steel);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  border-top-right-radius:4px;max-width:none;
}

/* ---------- REVEAL ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity 420ms ease,transform 420ms ease}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- BACK TO TOP ---------- */
.bd-to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 14px;border-radius:3px;
  background:rgba(16,32,47,.94);color:var(--amber);
  border:1px solid var(--lane);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--dur) ease,transform var(--dur) ease,visibility var(--dur) ease,border-color var(--dur) ease,color var(--dur) ease;
}
.bd-to-top.is-visible{opacity:1;visibility:visible;transform:none}
.bd-to-top:hover{border-color:var(--amber);color:var(--signal)}
.bd-to-top__label{font-size:10px;letter-spacing:.18em}

/* ---------- FOOTER ---------- */
.bd-footer{
  margin-top:clamp(40px,6vw,80px);
  background:linear-gradient(180deg,#0A1626 0%,#070F19 100%);
  border-top:1px solid var(--lane);
  color:var(--steel);
}
.bd-status-band{background:#0B1927;border-bottom:1px solid var(--lane)}
.bd-status-band__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 24px;padding-block:14px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
}
.bd-status-band__note{display:inline-flex;align-items:center;gap:9px;color:var(--mist);max-width:none}
.bd-footer__body{padding-block:clamp(34px,5vw,60px) clamp(22px,3vw,32px)}
.bd-footer__grid{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,3vw,40px) clamp(20px,3vw,36px);
}
.bd-footer__brand-name{font-size:20px;font-weight:900;letter-spacing:-.01em;color:var(--mist)}
.bd-footer__brand-text{max-width:34ch;margin-top:10px;font-size:13.5px;line-height:1.85;color:var(--steel)}
.bd-footer__col{min-width:0}
.bd-footer__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
  color:var(--amber);
}
.bd-footer__list{display:grid;gap:9px}
.bd-footer__link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--mist);text-decoration:none;
  padding-bottom:1px;border-bottom:1px solid transparent;
  transition:color var(--dur) ease,border-color var(--dur) ease,transform var(--dur) ease;
}
.bd-footer__link::before{content:"›";font-family:var(--font-mono);color:var(--lane);transition:color var(--dur) ease}
.bd-footer__link:hover,.bd-footer__link:focus-visible{color:var(--amber);border-bottom-color:var(--amber);transform:translateX(3px)}
.bd-footer__link:hover::before,.bd-footer__link:focus-visible::before{color:var(--amber)}
.bd-footer__feedback{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px 24px;
  margin-top:clamp(28px,4vw,44px);
  padding:18px 22px;
  border:1px solid var(--lane);
  border-left:3px solid var(--signal);
  border-radius:4px;
  background:linear-gradient(100deg,rgba(30,51,70,.6),rgba(16,32,47,.18));
}
.bd-footer__feedback-text{font-size:13.5px;line-height:1.75;color:var(--mist);max-width:52ch}
.bd-footer__feedback-actions{display:flex;flex-wrap:wrap;gap:10px}
.bd-footer__contact{
  display:grid;gap:8px;
  margin-top:clamp(24px,3vw,32px);
  padding-top:clamp(18px,2vw,24px);
  border-top:1px dashed rgba(30,51,70,.95);
}
.bd-footer__contact-item{
  display:flex;flex-wrap:wrap;gap:2px 10px;
  font-family:var(--font-mono);font-size:12.5px;line-height:1.65;color:var(--mist);
  min-width:0;word-break:break-word;
}
.bd-footer__contact-label{font-size:11px;letter-spacing:.1em;color:var(--steel)}
.bd-footer__meta{
  display:flex;flex-wrap:wrap;gap:6px 16px;
  margin-top:20px;padding-top:16px;
  border-top:1px solid var(--lane);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.03em;color:var(--steel);
  max-width:none;
}

/* ---------- RESPONSIVE ---------- */
@media (min-width:760px){
  .bd-footer__contact{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1024px){
  .bd-footer__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .bd-footer__brand{grid-column:1/-1}
  .bd-footer__brand-text{max-width:56ch}
  .bd-grid--3-6-3{grid-template-columns:5fr 7fr}
}
@media (max-width:900px){
  .bd-nav-toggle{display:inline-flex}
  .bd-header__nav-inner{min-height:52px}
  .bd-nav{
    position:absolute;left:0;right:0;top:100%;display:none;
    background:#0B1927;
    border-block:1px solid var(--lane);
    box-shadow:0 26px 44px -30px rgba(0,0,0,.98);
    max-height:calc(100vh - 140px);overflow-y:auto;
  }
  .bd-header[data-open] .bd-nav{display:block}
  .bd-nav__list{flex-direction:column;align-items:stretch;gap:0;padding:6px 0}
  .bd-nav__item{border-bottom:1px solid rgba(30,51,70,.75)}
  .bd-nav__item:last-child{border-bottom:0}
  .bd-nav__link{
    width:100%;justify-content:flex-start;
    padding:15px clamp(18px,4vw,26px);
    font-size:15px;
  }
  .bd-header.is-stuck .bd-nav__link{padding-block:15px;font-size:15px}
  .bd-nav__link::after{left:clamp(18px,4vw,26px);right:auto;width:30px;bottom:9px}
  .bd-nav__link[aria-current="page"]{background:rgba(242,178,62,.08)}
  .bd-status__item--time{display:none}
}
@media (max-width:768px){
  .bd-grid--7-4,.bd-grid--3-6-3{grid-template-columns:1fr}
  .bd-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bd-display{max-width:none}
  .bd-media--wide{aspect-ratio:16/9}
}
@media (max-width:620px){
  .bd-header__cta{display:none}
  .bd-status__item--ver{display:none}
  .bd-brand__glyph{width:38px;height:38px;font-size:19px}
  .bd-brand__line{font-size:14px}
  .bd-footer__grid{grid-template-columns:1fr}
  .bd-footer__contact{grid-template-columns:1fr}
  .bd-footer__feedback{padding:16px 16px 18px}
  .bd-status-band__inner{font-size:11.5px}
  .bd-to-top{padding:9px 12px}
}
@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}
  [data-reveal]{opacity:1;transform:none}
  .bd-progress__bar{transition:none}
}