*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:92px}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
::selection{background:var(--cyan);color:#04121A}

:root{
  --ink:#0B1026;
  --panel:#141B3D;
  --line:#253064;
  --cyan:#26E2D2;
  --cyan-deep:#0C6E6C;
  --gold:#F3B343;
  --coral:#FF6B5C;
  --white:#E9EDFB;
  --muted:#9AA6CF;
  --black:#05070F;
  --rail-w:284px;
  --gutter:clamp(18px,4vw,56px);
  --dur:.28s;
  --ease:cubic-bezier(.22,.61,.36,1);
  --cut:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px));
  --cut-sm:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:var(--font-head);
  --font-mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}

body{
  background:var(--ink);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.75;
  min-height:100vh;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(37,48,100,.5) 0 1px,transparent 1px 92px),
                   repeating-linear-gradient(0deg,rgba(37,48,100,.35) 0 1px,transparent 1px 92px);
  opacity:.45;
}

h1,h2,h3,h4,h5{font-family:var(--font-head);font-weight:900;letter-spacing:-.022em;line-height:1.14;margin:0 0 .55em}
h1{font-size:clamp(2.05rem,5.2vw,3.6rem)}
h2{font-size:clamp(1.6rem,3.4vw,2.4rem)}
h3{font-size:clamp(1.18rem,2.2vw,1.5rem);font-weight:800}
p{margin:0 0 1.1em;max-width:70ch}
strong{font-weight:800}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
code,kbd{font-family:var(--font-mono);font-size:.86em;color:var(--gold)}

.mono{font-family:var(--font-mono);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.skip-link{
  position:fixed;top:-120px;left:14px;z-index:200;
  padding:10px 18px;background:var(--cyan);color:#04121A;font-weight:800;font-size:.9rem;
  clip-path:var(--cut-sm);transition:top .2s var(--ease);
}
.skip-link:focus{top:14px;text-decoration:none}

/* ============ rail header ============ */
.rail{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--rail-w);
  z-index:60;
  display:flex;
  flex-direction:column;
  background:linear-gradient(175deg,#101838 0%,var(--ink) 46%,var(--black) 100%);
  border-right:1px solid var(--line);
}
.rail::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(38,226,210,.07) 0 1px,transparent 1px 380px);
}
.rail::after{
  content:"";position:absolute;top:0;right:-1px;width:2px;height:var(--progress,0%);
  background:linear-gradient(180deg,var(--cyan),var(--cyan-deep));
  transition:height .12s linear;
}
.rail__inner{
  position:relative;z-index:1;
  display:flex;flex-direction:column;gap:18px;
  height:100%;padding:28px 20px 22px;overflow:auto;
}
.rail__brand{flex:0 0 auto;min-width:0}
.brand{display:block;color:var(--white);text-decoration:none}
.brand:hover{text-decoration:none;color:var(--white)}
.brand::after{content:"";display:block;width:42px;height:3px;margin-top:11px;background:linear-gradient(90deg,var(--cyan),transparent)}
.brand__mark{display:block;font-family:var(--font-head);font-weight:900;font-size:1.62rem;letter-spacing:-.035em;line-height:1.05}
.brand__sub{display:block;margin-top:7px;font-family:var(--font-mono);font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}

.rail__status{
  display:flex;gap:9px;align-items:flex-start;margin:0;
  font-family:var(--font-mono);font-size:.72rem;line-height:1.65;letter-spacing:.01em;color:var(--muted);
}
.status-dot{
  flex:none;width:7px;height:7px;margin-top:.6em;background:var(--coral);
  box-shadow:0 0 0 4px rgba(255,107,92,.16);
  animation:pulse 2.8s var(--ease) infinite;
}
@keyframes pulse{50%{opacity:.3}}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 14px;border:1px solid var(--line);background:var(--panel);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;
  cursor:pointer;clip-path:var(--cut-sm);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle__bars i{display:block;height:2px;background:var(--cyan);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.nav{display:flex;flex-direction:column;gap:14px;flex:1 1 auto}
.nav__label{
  margin:0;font-family:var(--font-mono);font-size:.62rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);padding-bottom:10px;border-bottom:1px solid var(--line);
}
.nav__list{display:flex;flex-direction:column;gap:4px}
.nav__link{
  position:relative;display:flex;align-items:baseline;gap:11px;
  padding:9px 12px;color:var(--muted);text-decoration:none;
  border:1px solid transparent;border-left:2px solid var(--line);
  background-color:transparent;
  background-image:linear-gradient(90deg,transparent,rgba(38,226,210,.16),transparent);
  background-size:220% 100%;background-position:180% 0;background-repeat:no-repeat;
  transition:color var(--dur) var(--ease),background-position .55s var(--ease),
             border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav__link:hover{
  color:var(--white);text-decoration:none;border-left-color:var(--cyan);
  background-color:rgba(20,27,61,.92);background-position:-40% 0;
}
.nav__link[aria-current="page"]{
  color:#fff;border-color:rgba(38,226,210,.5);border-left-color:var(--cyan);
  background-color:rgba(38,226,210,.1);
}
.nav__no{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;color:var(--gold)}
.nav__link[aria-current="page"] .nav__no{color:var(--cyan)}
.nav__txt{font-size:.95rem;font-weight:800;letter-spacing:.01em}

.rail__cta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:auto;padding:12px 15px;
  background:linear-gradient(120deg,rgba(38,226,210,.16),rgba(12,110,108,.3));
  border:1px solid rgba(38,226,210,.4);
  color:var(--white);font-weight:800;font-size:.88rem;text-decoration:none;
  clip-path:var(--cut-sm);
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rail__cta::after{content:"→";font-family:var(--font-mono);color:var(--cyan)}
.rail__cta:hover{text-decoration:none;border-color:var(--cyan);background:linear-gradient(120deg,rgba(38,226,210,.3),rgba(12,110,108,.44))}
.rail__meta{
  margin:0;padding-top:12px;border-top:1px solid var(--line);
  font-size:.62rem;letter-spacing:.12em;color:var(--muted);
}

/* ============ footer ============ */
.foot{
  position:relative;z-index:1;
  background:var(--black);color:var(--white);
  border-top:1px solid var(--line);
  padding:clamp(40px,6vw,74px) var(--gutter) 0;
}
.foot::before{
  content:"";position:absolute;top:-1px;left:0;width:min(340px,62%);height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--gold),transparent);
}
.foot__grid{
  display:grid;gap:clamp(24px,3vw,40px);grid-template-columns:1fr;
  max-width:1180px;margin-inline:auto;
}
.foot__col{min-width:0}
.foot__col--brand{border-left:2px solid var(--line);padding-left:16px}
.foot__brand{margin:0 0 10px;font-family:var(--font-head);font-weight:900;font-size:1.28rem;letter-spacing:-.02em;color:#fff;max-width:none}
.foot__text{margin:0 0 14px;font-size:.86rem;line-height:1.8;color:var(--muted);max-width:42ch}
.foot__legal{
  display:inline-block;margin:0;padding-top:10px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.1em;color:var(--muted);max-width:none;
}
.foot__title{
  margin:0 0 14px;font-family:var(--font-mono);font-size:.66rem;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);
}
.foot__list{display:flex;flex-direction:column;gap:9px}
.foot__list--contact{gap:14px}
.foot__link{
  display:inline-flex;align-items:center;gap:9px;color:var(--muted);font-size:.9rem;
  transition:color var(--dur) var(--ease);
}
.foot__link::before{content:"";width:10px;height:1px;background:var(--line);transition:width var(--dur) var(--ease),background var(--dur) var(--ease)}
.foot__link:hover{color:var(--cyan);text-decoration:none}
.foot__link:hover::before{width:18px;background:var(--cyan)}
.foot__row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px}
.foot__row--plain{align-items:flex-start}
.foot__label{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);flex:none;width:100%}
.foot__value{font-size:.83rem;color:var(--white);word-break:break-word}
.foot__note{margin:14px 0 0;font-size:.76rem;line-height:1.7;color:var(--muted);max-width:38ch}
.copy-btn{
  flex:none;min-width:58px;padding:4px 9px;cursor:pointer;
  border:1px solid var(--line);background:rgba(20,27,61,.75);
  font-family:var(--font-mono);font-size:.62rem;letter-spacing:.12em;color:var(--muted);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.copy-btn:hover{color:var(--cyan);border-color:rgba(38,226,210,.5)}
.copy-btn[data-copied="true"]{color:var(--cyan);border-color:var(--cyan);background:rgba(38,226,210,.12)}
.foot__strip{
  max-width:1180px;margin:clamp(28px,4vw,46px) auto 0;
  padding-top:18px;border-top:1px solid var(--line);
}
.foot__strip-list{display:flex;flex-wrap:wrap;gap:10px 20px;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em}
.foot__strip-link{display:inline-flex;align-items:center;gap:7px;color:var(--muted)}
.foot__strip-link::before{content:"";width:5px;height:5px;background:var(--line);transition:background var(--dur) var(--ease)}
.foot__strip-link:hover{color:var(--cyan);text-decoration:none}
.foot__strip-link:hover::before{background:var(--cyan)}
.foot__copy{
  max-width:1180px;margin:20px auto 0;padding:16px 0 26px;
  border-top:1px solid rgba(37,48,100,.6);
  display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:space-between;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;color:var(--muted);
}
.foot__copy p{margin:0;max-width:none}

/* ============ layout utilities ============ */
.container{width:min(1180px,100%);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(28px,4vw,52px)}
.section__head{margin-bottom:clamp(24px,3vw,42px);max-width:70ch}
.eyebrow{
  display:flex;align-items:center;gap:10px;margin:0 0 14px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:28px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent)}
.lede{font-size:clamp(1.02rem,1.6vw,1.2rem);line-height:1.8;color:var(--muted);max-width:64ch}
.grid{display:grid;gap:clamp(16px,2vw,26px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

/* ============ panels & cards ============ */
.panel,.card{
  position:relative;padding:clamp(20px,2.4vw,26px);
  background:var(--line);clip-path:var(--cut);
}
.panel::before,.card::before{
  content:"";position:absolute;inset:1px;z-index:0;clip-path:inherit;
  background:linear-gradient(160deg,var(--panel),#0F1530 78%);
}
.panel>*,.card>*{position:relative;z-index:1}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;font-weight:800;font-size:.9rem;letter-spacing:.01em;
  border:1px solid var(--line);background:var(--panel);color:var(--white);
  text-decoration:none;cursor:pointer;clip-path:var(--cut-sm);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),
             color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn--primary{background:linear-gradient(120deg,var(--cyan),#12A9A2);color:#04121A;border-color:transparent}
.btn--gold{background:linear-gradient(120deg,var(--gold),#C98A22);color:#1A1200;border-color:transparent}
.btn--ghost{background:transparent;color:var(--cyan);border-color:rgba(38,226,210,.45)}

/* ============ tags / badge / stats ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;
  font-family:var(--font-mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;
  border:1px solid var(--line);background:rgba(20,27,61,.6);color:var(--muted);
}
.tag--cyan{color:var(--cyan);border-color:rgba(38,226,210,.4)}
.tag--gold{color:var(--gold);border-color:rgba(243,179,67,.4)}
.tag--coral{color:var(--coral);border-color:rgba(255,107,92,.42)}
.badge{
  display:inline-block;padding:3px 8px;background:var(--coral);color:#2A0703;
  font-family:var(--font-mono);font-size:.6rem;letter-spacing:.12em;
}
.stat{
  padding:18px 20px;border-left:3px solid var(--gold);
  background:linear-gradient(90deg,rgba(243,179,67,.12),transparent 80%);
}
.stat__num{display:block;font-family:var(--font-mono);font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.2;color:var(--gold)}
.stat__label{display:block;margin-top:6px;font-size:.76rem;letter-spacing:.08em;color:var(--muted)}

/* ============ figures ============ */
.figure{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(140deg,var(--panel) 0%,var(--ink) 55%,var(--cyan-deep) 145%);
  aspect-ratio:16/9;
}
.figure img,.figure__img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
.figure::after{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(38,226,210,.13) 0 1px,transparent 1px 46px),
                   repeating-linear-gradient(0deg,rgba(38,226,210,.09) 0 1px,transparent 1px 46px);
}
.figure__cap{
  position:absolute;left:0;bottom:0;z-index:3;
  padding:8px 13px;background:rgba(5,7,15,.84);
  border-top:1px solid var(--line);border-right:1px solid var(--line);
  font-family:var(--font-mono);font-size:.64rem;letter-spacing:.1em;color:var(--muted);
}
.figure--wide{aspect-ratio:21/9}
.figure--tall{aspect-ratio:3/4}
.figure--device{aspect-ratio:9/16;max-width:250px;margin-inline:auto}

/* ============ horizontal band ============ */
.band{
  position:relative;overflow:hidden;border-block:1px solid var(--line);
  background:linear-gradient(90deg,rgba(12,110,108,.36),rgba(11,16,38,0) 32%,rgba(11,16,38,0) 68%,rgba(243,179,67,.2));
}
.band__track{
  display:flex;gap:14px;padding:16px var(--gutter);
  overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:thin;
}
.band__track::-webkit-scrollbar{height:6px}
.band__track::-webkit-scrollbar-thumb{background:var(--line)}
.band__item{
  flex:0 0 auto;scroll-snap-align:start;min-width:174px;
  display:flex;flex-direction:column;gap:5px;padding:12px 16px;
  border:1px solid var(--line);background:rgba(20,27,61,.72);
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.band__item:hover{border-color:var(--cyan);background:rgba(38,226,210,.08)}
.band__item .mono{color:var(--gold);font-size:.78rem}

/* ============ crumb & table ============ */
.crumb{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;color:var(--muted)}
.crumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb__list li+li::before{content:"/";margin-right:8px;color:var(--line)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--cyan);text-decoration:none}
.tbl{width:100%;font-size:.92rem}
.tbl caption{text-align:left;padding-bottom:12px;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;color:var(--muted)}
.tbl th,.tbl td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl thead th{
  font-family:var(--font-mono);font-size:.66rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--cyan);background:rgba(20,27,61,.7);
}
.tbl tbody tr:hover{background:rgba(38,226,210,.05)}
.tbl .mono{color:var(--gold)}

/* ============ reveal ============ */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.js [data-reveal].is-in{opacity:1;transform:none}

/* ============ desktop canvas offset ============ */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  html{scroll-padding-top:24px}
}

/* ============ tablet / mobile rail ============ */
@media (max-width:1023px){
  .rail{
    position:sticky;top:0;left:auto;right:auto;bottom:auto;
    width:100%;height:auto;
    border-right:0;border-bottom:1px solid var(--line);
    background:linear-gradient(120deg,#101838,var(--ink) 60%,var(--black));
  }
  .rail::after{
    top:auto;bottom:-1px;right:auto;left:0;
    width:var(--progress,0%);height:2px;
    background:linear-gradient(90deg,var(--cyan),var(--cyan-deep));
    transition:width .12s linear;
  }
  .rail__inner{
    flex-direction:row;flex-wrap:wrap;align-items:center;gap:10px 14px;
    height:auto;padding:12px 16px;overflow:visible;
  }
  .rail__brand{flex:1 1 auto;min-width:0}
  .brand__mark{font-size:1.28rem}
  .brand__sub{display:none}
  .brand::after{display:none}
  .rail__status{flex:1 1 100%;order:3;font-size:.68rem;line-height:1.5}
  .nav-toggle{display:inline-flex;order:2;margin-left:auto}
  .nav{
    order:4;flex:1 1 100%;display:none;
    flex-direction:column;gap:14px;
    padding:14px 0 6px;border-top:1px solid var(--line);
  }
  .rail[data-open="true"] .nav{display:flex}
  .rail[data-open="true"]{box-shadow:0 18px 40px rgba(5,7,15,.6)}
  .nav__label{border-bottom:0;padding-bottom:0}
  .nav__list{display:grid;grid-template-columns:repeat(auto-fit,minmax(148px,1fr));gap:6px}
  .nav__link{padding:10px 12px;border-left-width:1px;border-color:var(--line)}
  .rail__cta{margin-top:6px}
  .rail__meta{display:none}
  .foot__grid{grid-template-columns:1fr}
}
@media (min-width:720px){
  .foot__grid{grid-template-columns:repeat(2,1fr)}
  .foot__label{width:auto}
}
@media (min-width:1024px){
  .foot__grid{grid-template-columns:1.45fr 1fr 1.35fr 1fr}
  .foot__label{width:100%}
}
@media (max-width:719px){
  .foot__copy{flex-direction:column;gap:6px}
  .tbl th,.tbl td{padding:10px 10px}
}

/* ============ reduced motion ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .js [data-reveal]{opacity:1;transform:none}
  .btn:hover{transform:none}
}