*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,picture{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit}
table{border-collapse:collapse;width:100%}

:root{
  --ink:#0A1520;
  --studio:#122736;
  --mist:#1E3E50;
  --signal:#FF6A1F;
  --score:#B8FF3C;
  --cyan:#7ED0E0;
  --paper:#F4EFE6;
  --sepia:#2B1A12;
  --ember:#C4401C;

  --rail:104px;
  --bar-h:64px;
  --maxw:1360px;
  --line-mist:rgba(30,62,80,.72);
  --line-cyan:rgba(126,208,224,.18);
  --ease:cubic-bezier(.22,.7,.28,1);
  --dur:200ms;

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SF Mono","Roboto Mono","JetBrains Mono",ui-monospace,"Courier New",monospace;
}

body{
  min-height:100vh;
  padding-left:var(--rail);
  padding-top:var(--bar-h);
  background-color:var(--ink);
  background-image:
    linear-gradient(90deg,rgba(30,62,80,.42) 1px,transparent 1px),
    linear-gradient(180deg,rgba(30,62,80,.24) 1px,transparent 1px);
  background-size:120px 120px;
  background-position:-1px -1px;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}

h1,h2,h3,h4{font-weight:900;line-height:1.18;letter-spacing:-.01em;color:var(--paper)}
h1{font-size:clamp(38px,6vw,88px);letter-spacing:-.03em}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:18px;font-weight:800}
p{max-width:74ch}

.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.01em}

:focus-visible{outline:2px solid var(--score);outline-offset:3px}
a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--score);outline-offset:3px}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  display:inline-block;
  padding:10px 18px;
  background:var(--score);color:var(--sepia);
  font-size:14px;font-weight:800;letter-spacing:.08em;text-decoration:none;
  transform:translateY(-220%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus{transform:translateY(0)}

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

.site-topbar{
  position:fixed;top:0;left:var(--rail);right:0;height:var(--bar-h);z-index:80;
  display:flex;align-items:center;gap:clamp(12px,2vw,26px);
  padding:0 clamp(14px,2.4vw,32px);
  background:linear-gradient(180deg,rgba(10,21,32,.98),rgba(10,21,32,.9));
  border-bottom:1px solid var(--mist);
}
@supports (backdrop-filter:blur(2px)){
  .site-topbar{backdrop-filter:blur(8px)}
}

.brand{display:inline-flex;align-items:baseline;gap:3px;flex:0 0 auto;text-decoration:none}
.brand-mark{font-size:20px;font-weight:900;letter-spacing:.14em;color:var(--paper)}
.brand-name{font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--signal)}

.brand-tagline{
  flex:0 1 auto;max-width:32ch;
  padding-left:18px;border-left:1px solid var(--mist);
  font-size:12px;letter-spacing:.14em;color:rgba(126,208,224,.72);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:10px;flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 12px;
  background:transparent;border:1px solid var(--mist);
  color:var(--cyan);font-size:11px;font-weight:700;letter-spacing:.2em;
  cursor:pointer;border-radius:0;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle:hover{color:var(--paper);border-color:var(--cyan)}
.nav-toggle-lines{display:grid;gap:3px;width:14px}
.nav-toggle-lines span{display:block;width:14px;height:1px;background:currentColor;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:nth-child(3){transform:translateY(-4px) rotate(-45deg)}
.nav-toggle-text{line-height:1}

.read-progress{
  position:fixed;top:0;left:var(--rail);right:0;height:2px;z-index:95;
  background:transparent;pointer-events:none;
}
.read-progress > span{display:block;height:100%;width:0;background:var(--signal)}

.site-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail);z-index:90;
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,var(--studio) 0%,#0d1d2a 72%,#0a1520 100%);
  border-right:1px solid var(--mist);
  overflow-y:auto;overscroll-behavior:contain;
  scrollbar-width:thin;
  scrollbar-color:var(--mist) transparent;
}
.site-nav::-webkit-scrollbar{width:4px}
.site-nav::-webkit-scrollbar-thumb{background:var(--mist)}

.nav-cap{
  flex:0 0 auto;height:var(--bar-h);
  display:grid;place-items:center;
  border-bottom:1px solid var(--mist);
}
.nav-cap > span{
  writing-mode:vertical-rl;
  font-size:10px;letter-spacing:.34em;color:rgba(126,208,224,.55);
}

.nav-list{display:flex;flex-direction:column;flex:1 1 auto}
.nav-list li{display:flex;flex:1 1 auto}

.nav-list a{
  position:relative;
  display:flex;flex:1 1 auto;flex-direction:column;
  align-items:center;justify-content:center;gap:10px;
  padding:16px 4px;
  text-decoration:none;
  color:rgba(126,208,224,.85);
  border-bottom:1px solid rgba(30,62,80,.6);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-list a:hover{color:var(--paper);background:rgba(126,208,224,.07)}
.nav-num{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:rgba(126,208,224,.5);font-weight:700}
.nav-label{writing-mode:vertical-rl;font-size:13px;letter-spacing:.2em;line-height:1.25;font-weight:600}

.nav-list a[aria-current="page"]{
  color:var(--paper);
  background:linear-gradient(90deg,rgba(255,106,31,.24),rgba(255,106,31,0) 78%);
}
.nav-list a[aria-current="page"]::before{
  content:"";position:absolute;top:0;bottom:0;left:0;width:3px;background:var(--signal);
}
.nav-list a[aria-current="page"] .nav-num{color:var(--signal)}
.nav-list a[aria-current="page"] .nav-label{color:var(--paper)}

.nav-hint{
  flex:0 0 auto;
  padding:14px 10px;
  border-top:1px solid var(--mist);
  font-size:10px;line-height:1.6;letter-spacing:.12em;
  color:rgba(126,208,224,.48);text-align:center;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 20px;
  background:transparent;border:1px solid transparent;border-radius:0;
  font-size:14px;font-weight:800;letter-spacing:.08em;line-height:1.2;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn--signal{background:var(--signal);border-color:var(--signal);color:var(--ink)}
.btn--signal:hover{background:#ff8340;border-color:#ff8340}
.btn--line{border-color:var(--mist);color:var(--cyan)}
.btn--line:hover{border-color:var(--signal);color:var(--paper);background:rgba(255,106,31,.1)}
.btn--ghost{border-color:transparent;color:var(--cyan)}
.btn--ghost:hover{color:var(--paper);background:rgba(126,208,224,.08)}
.topbar-cta{font-size:12px;padding:10px 16px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,96px);
  background:linear-gradient(180deg,rgba(18,39,54,.72),var(--studio) 42%,#0c1a26 100%);
  border-top:1px solid var(--mist);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;width:clamp(72px,14vw,180px);height:2px;background:var(--signal);
}
.footer-inner{
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding:clamp(34px,5vw,62px) clamp(20px,4vw,56px) clamp(22px,3vw,30px);
}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.75fr);
  gap:clamp(26px,4vw,64px);
  padding-bottom:clamp(28px,3.6vw,44px);
  border-bottom:1px solid var(--mist);
}
.footer-mark{font-size:clamp(24px,2.6vw,30px);font-weight:900;letter-spacing:.1em}
.footer-closing{margin-top:12px;max-width:26ch;font-size:15px;line-height:1.7;color:rgba(244,239,230,.72)}
.footer-cta{margin-top:20px}

.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,2.4vw,34px)}
.footer-col-title{
  font-size:11px;font-weight:800;letter-spacing:.26em;color:var(--cyan);
  padding-bottom:10px;border-bottom:1px solid var(--mist);
}
.footer-links{margin-top:14px;display:grid;gap:9px}
.footer-links a{
  font-size:14px;color:rgba(244,239,230,.74);text-decoration:none;
  border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-links a:hover{color:var(--paper);border-bottom-color:var(--signal)}

.footer-contact{padding:clamp(24px,3vw,34px) 0 0}
.footer-contact-list{
  margin-top:16px;
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(14px,2vw,32px);
}
.contact-row{display:flex;flex-direction:column;gap:5px;min-width:0}
.contact-key{font-size:10px;letter-spacing:.26em;color:rgba(126,208,224,.66);font-weight:700}
.contact-val{font-size:15px;color:var(--paper);word-break:break-word}
.footer-note{margin-top:16px;max-width:62ch;font-size:12px;line-height:1.7;color:rgba(126,208,224,.6)}

.footer-meta{
  margin-top:clamp(24px,3vw,34px);padding-top:16px;border-top:1px solid var(--mist);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
}
.footer-legal{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:rgba(126,208,224,.55);max-width:none}

.dock-return{
  position:fixed;right:0;bottom:clamp(18px,4vh,44px);z-index:70;
  display:flex;align-items:center;gap:6px;
  padding:14px 11px;
  background:var(--signal);color:var(--ink);
  writing-mode:vertical-rl;
  font-size:12px;font-weight:900;letter-spacing:.2em;text-decoration:none;
  box-shadow:-10px 0 26px rgba(0,0,0,.4);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.dock-return:hover{transform:translateX(-3px);background:#ff8340}

/* ---------- layout helpers ---------- */
.shell{
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding-inline:clamp(20px,4vw,56px);
}
.section{position:relative;padding:clamp(40px,6vw,80px) 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:14px 24px;
  margin-bottom:clamp(20px,3vw,32px);padding-bottom:14px;
  border-bottom:1px solid var(--mist);
}
.eyebrow{font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.3em;color:var(--signal);text-transform:uppercase}
.section-title{font-size:clamp(22px,2.6vw,30px)}
.section-note{font-size:13px;line-height:1.7;color:rgba(126,208,224,.72);max-width:46ch}
.rule{height:1px;border:0;background:var(--mist);margin:0}

.prose{max-width:68ch;font-size:17px;line-height:1.8;color:rgba(244,239,230,.82)}
.prose p + p{margin-top:1.1em}
.prose strong{color:var(--paper);font-weight:800}
.prose a{color:var(--score);text-underline-offset:3px}

.grid{display:grid;gap:clamp(16px,2vw,24px)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

/* ---------- panels / bands / tables ---------- */
.panel{position:relative;background:rgba(18,39,54,.72);border:1px solid var(--mist)}
.panel-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 16px;border-bottom:1px solid var(--mist);
  font-size:11px;font-weight:800;letter-spacing:.24em;color:var(--cyan);
}
.panel-body{padding:16px}

.band{
  display:flex;
  overflow-x:auto;overscroll-behavior-x:contain;
  border-top:1px solid var(--mist);border-bottom:1px solid var(--mist);
  scroll-snap-type:x proximity;scrollbar-width:thin;
}
.band::-webkit-scrollbar{height:4px}
.band::-webkit-scrollbar-thumb{background:var(--mist)}
.band-item{
  flex:0 0 auto;min-width:184px;
  padding:16px 20px;
  border-right:1px solid var(--mist);
  scroll-snap-align:start;
  text-decoration:none;color:rgba(244,239,230,.8);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.band-item:last-child{border-right:0}
.band-item:hover{background:rgba(126,208,224,.07);color:var(--paper)}

.data-table{font-size:14px}
.data-table th{
  padding:10px 12px;text-align:left;
  font-size:11px;font-weight:700;letter-spacing:.2em;color:rgba(126,208,224,.72);
  border-bottom:1px solid var(--mist);
}
.data-table td{padding:11px 12px;border-bottom:1px solid rgba(30,62,80,.5)}
.data-table td.num{text-align:right}
.data-table tbody tr{transition:background var(--dur) var(--ease)}
.data-table tbody tr:hover{background:rgba(126,208,224,.07)}

/* ---------- media ---------- */
.media{
  position:relative;overflow:hidden;
  background:
    radial-gradient(120% 90% at 18% 0%,rgba(126,208,224,.14),transparent 60%),
    linear-gradient(160deg,var(--studio),#0b1a26 70%);
  border:1px solid var(--mist);
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(90deg,rgba(126,208,224,.08) 1px,transparent 1px),
    linear-gradient(180deg,rgba(126,208,224,.08) 1px,transparent 1px);
  background-size:34px 34px;
}
.media img,.media video,.media picture{width:100%;height:100%;object-fit:cover;display:block}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--slant{clip-path:polygon(0 0,100% 0,100% 93%,0 100%)}
.media-caption{margin-top:8px;font-size:12px;letter-spacing:.06em;line-height:1.6;color:rgba(126,208,224,.66);max-width:60ch}

/* ---------- small bits ---------- */
.vert-note{writing-mode:vertical-rl;font-size:12px;letter-spacing:.34em;color:rgba(126,208,224,.6)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 8px;border:1px solid var(--mist);
  font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--cyan);
}
.tag--score{border-color:rgba(184,255,60,.5);color:var(--score)}
.tag--signal{border-color:rgba(255,106,31,.55);color:var(--signal)}
.status-dot{
  display:inline-block;width:6px;height:6px;
  background:var(--score);box-shadow:0 0 0 3px rgba(184,255,60,.16);
  vertical-align:middle;
}

.crumbs{margin:clamp(18px,3vw,30px) 0 0}
.crumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;letter-spacing:.1em;color:rgba(126,208,224,.7)}
.crumb-list a{text-decoration:none;border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.crumb-list a:hover{color:var(--paper);border-bottom-color:var(--signal)}
.crumb-sep{color:rgba(126,208,224,.34)}

/* ---------- reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity 240ms var(--ease),transform 240ms var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .brand-tagline{display:none}
}

@media (max-width:1100px){
  :root{--rail:88px}
  .footer-top{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:900px){
  :root{--rail:0px;--bar-h:58px}
  body{padding-left:0}

  .site-topbar{left:0;gap:12px}
  .brand-mark{font-size:18px}
  .nav-toggle{display:inline-flex}

  .site-nav{
    top:var(--bar-h);bottom:auto;left:0;right:0;width:100%;
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;
    border-right:0;border-bottom:1px solid var(--mist);
    background:#0d1d2a;
    transition:opacity var(--dur) var(--ease),max-height 240ms var(--ease),visibility 0s linear 240ms;
  }
  .site-nav[data-open]{
    max-height:calc(100vh - var(--bar-h));
    max-height:calc(100dvh - var(--bar-h));
    overflow-y:auto;opacity:1;visibility:visible;
    transition:opacity var(--dur) var(--ease),max-height 240ms var(--ease);
  }

  .nav-cap{display:none}
  .nav-list{flex:0 0 auto}
  .nav-list li{flex:0 0 auto}
  .nav-list a{
    flex-direction:row;justify-content:flex-start;gap:16px;
    padding:15px 20px;
    border-bottom:1px solid rgba(30,62,80,.62);
  }
  .nav-label{writing-mode:horizontal-tb;font-size:16px;letter-spacing:.14em;font-weight:700}
  .nav-num{font-size:11px}
  .nav-hint{border-top:1px solid var(--mist);font-size:11px;letter-spacing:.14em}

  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 6}

  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 24px}
  .footer-contact-list{grid-template-columns:minmax(0,1fr)}
  .dock-return{padding:12px 9px;font-size:11px;letter-spacing:.16em}
}

@media (max-width:600px){
  body{font-size:15px}
  .topbar-cta{padding:8px 10px;font-size:11px;letter-spacing:.05em}
  .nav-toggle{padding:8px 10px;gap:7px}
  .footer-cols{grid-template-columns:minmax(0,1fr)}
  .footer-meta{flex-direction:column;align-items:flex-start}
  .section-note{max-width:none}
  .data-table th,.data-table td{padding:9px 8px}
  .band-item{min-width:150px;padding:14px 16px}
}

@media (prefers-reduced-motion:reduce){
  *,*::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}
}