/* ========== 1. Reset ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px}
body{margin:0}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0}
ul[class],ol[class]{list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse}
input,textarea,select{font:inherit;color:inherit}

/* ========== 2. Tokens ========== */
:root{
  --nav-blue:#1746D1;
  --ink:#0B1526;
  --mint:#2BE3A0;
  --orange:#FF6B2C;
  --warm:#EDE8DF;
  --paper:#FAF7F0;
  --rock:#8A8578;
  --moss:#4F6B4A;
  --clay:#B75E3C;
  --graphite:#1C1F24;
  --line:#B9C6F2;
  --font-display:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --wrap:1240px;
  --pad:clamp(16px,4vw,40px);
  --gutter:clamp(16px,2.4vw,24px);
  --bd:2px solid var(--graphite);
  --shadow-hard:6px 6px 0 var(--graphite);
  --shadow-soft:4px 4px 0 var(--graphite);
}

/* ========== 3. Base typography ========== */
body{
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  color:var(--graphite);
  background-color:var(--warm);
  background-image:
    linear-gradient(to right,rgba(28,31,36,.045) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(28,31,36,.045) 1px,transparent 1px);
  background-size:96px 96px,96px 96px;
  min-height:100vh;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(34px,5vw,48px)}
h2{font-size:clamp(24px,3vw,32px)}
h3{font-size:clamp(19px,2.2vw,22px);font-weight:600}
strong{font-weight:600}
:focus-visible{outline:3px solid var(--nav-blue);outline-offset:2px}
.site-footer :focus-visible{outline-color:var(--mint)}

/* ========== 4. Utilities ========== */
.container{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.mono{font-family:var(--font-mono);font-size:.92em;letter-spacing:.04em}
.num{font-family:var(--font-mono);border-bottom:1px solid var(--line);padding-bottom:1px;letter-spacing:.03em}
.prose{max-width:34em;line-height:1.8}
.prose p+p{margin-top:1em}
.prose a{color:var(--nav-blue);border-bottom:2px solid var(--line)}
.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}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--rock)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--nav-blue)}

/* ========== 5. Grid ========== */
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gutter)}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

/* ========== 6. Buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 16px;
  border:var(--bd);
  background:var(--paper);color:var(--graphite);
  font-family:var(--font-display);font-weight:600;font-size:14px;line-height:1.2;
  box-shadow:var(--shadow-soft);
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease;
}
.btn:hover{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--graphite)}
.btn--sm{padding:7px 12px;font-size:13px;box-shadow:3px 3px 0 var(--graphite)}
.btn--ghost{background:transparent}
.btn--ghost:hover{background:var(--nav-blue);color:#fff}
.btn--solid{background:var(--nav-blue);color:#fff}
.btn--solid:hover{background:#1239b0;color:#fff}
.btn--signal{background:var(--orange);color:var(--ink);border-color:var(--graphite);box-shadow:4px 4px 0 rgba(0,0,0,.55)}
.btn--signal:hover{background:#ff8148;box-shadow:1px 1px 0 rgba(0,0,0,.55)}

/* ========== 7. Header ========== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  color:var(--graphite);
  border-bottom:2px solid var(--graphite);
}
.site-header::before{
  content:"";display:block;height:6px;
  background:linear-gradient(90deg,var(--nav-blue) 0 40%,var(--mint) 40% 56%,var(--orange) 56% 72%,var(--moss) 72% 100%);
}
.skip-link{
  position:absolute;left:16px;top:-72px;z-index:120;
  padding:11px 18px;
  background:var(--ink);color:var(--paper);
  border:2px solid var(--mint);
  font-family:var(--font-display);font-weight:600;font-size:14px;
  transition:top .16s ease;
}
.skip-link:focus{top:10px}
.hdr-progress{
  position:absolute;left:0;right:0;bottom:-2px;height:3px;
  overflow:hidden;pointer-events:none;
  background:rgba(23,70,209,.12);
}
.hdr-progress__bar{
  display:block;width:100%;height:100%;
  background:linear-gradient(90deg,var(--nav-blue),var(--mint));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .1s linear;
}
.hdr-inner{
  position:relative;
  display:grid;
  grid-template-columns:auto 1fr auto;
  grid-template-areas:"brand nav actions";
  align-items:center;
  gap:clamp(12px,2vw,28px);
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:12px var(--pad);
  transition:padding .18s ease;
}
.site-header[data-scrolled="true"] .hdr-inner{padding-block:6px}
.brand{grid-area:brand;display:inline-flex;align-items:center;gap:12px;min-width:0}
.brand__mark{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:54px;height:38px;padding:0 8px;
  background:var(--nav-blue);color:#fff;
  border:var(--bd);box-shadow:3px 3px 0 var(--graphite);
  font-family:var(--font-mono);font-weight:700;font-size:16px;letter-spacing:.06em;
  transition:background-color .16s ease,color .16s ease;
}
.brand:hover .brand__mark{background:var(--ink);color:var(--mint)}
.brand__text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand__name{font-family:var(--font-display);font-weight:800;font-size:18px;letter-spacing:-.01em;white-space:nowrap}
.brand__note{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;color:var(--rock);white-space:nowrap}
.site-nav{grid-area:nav;min-width:0}
.site-nav__list{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:clamp(6px,1.6vw,22px)}
.site-nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:10px 2px 12px;
  font-family:var(--font-display);font-weight:600;font-size:15px;line-height:1.2;
  color:var(--graphite);
  transition:color .16s ease;
}
.site-nav__idx{font-family:var(--font-mono);font-size:10px;font-weight:400;letter-spacing:.08em;color:var(--rock)}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:3px;
  background:var(--nav-blue);
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .18s ease;
}
.site-nav__link:hover{color:var(--nav-blue)}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--nav-blue)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--nav-blue)}
.hdr-actions{grid-area:actions;display:flex;align-items:center;gap:8px;justify-self:end}
.nav-toggle{
  display:none;
  align-items:center;gap:8px;
  padding:8px 11px;
  border:var(--bd);background:var(--paper);color:var(--graphite);
  box-shadow:3px 3px 0 var(--graphite);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
}
.nav-toggle__icon{display:flex;flex-direction:column;justify-content:center;gap:3px;width:16px;height:14px}
.nav-toggle__bar{display:block;width:100%;height:2px;background:currentColor;transition:opacity .16s ease}
.site-header[data-open="true"] .nav-toggle{background:var(--nav-blue);color:#fff}
.site-header[data-open="true"] .nav-toggle__bar:nth-child(2){opacity:0}

/* ========== 8. Footer ========== */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  padding-top:clamp(40px,6vw,72px);
  padding-bottom:0;
  background-color:var(--ink);
  background-image:linear-gradient(to bottom,rgba(185,198,242,.07) 1px,transparent 1px);
  background-size:100% 48px;
  color:#D9E2F4;
  border-top:2px solid var(--graphite);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:6px;
  background:linear-gradient(90deg,var(--nav-blue) 0 34%,var(--mint) 34% 52%,var(--orange) 52% 66%,var(--moss) 66% 100%);
}
.ft-grid{display:grid;grid-template-columns:1.05fr 1.7fr 1.05fr;gap:clamp(24px,4vw,56px)}
.ft-brand{display:flex;flex-direction:column;gap:12px}
.ft-brand__link{display:inline-flex;align-items:center;gap:12px;align-self:flex-start}
.ft-brand__mark{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:54px;height:38px;padding:0 8px;
  background:var(--ink);color:var(--mint);
  border:2px solid var(--mint);
  font-family:var(--font-mono);font-weight:700;font-size:16px;letter-spacing:.06em;
}
.ft-brand__link:hover .ft-brand__mark{background:var(--mint);color:var(--ink)}
.ft-brand__name{font-family:var(--font-display);font-weight:800;font-size:18px;color:#F2F5FB;letter-spacing:-.01em}
.ft-brand__line{font-size:14px;line-height:1.7;color:#9FB0CB;max-width:22em}
.ft-brand__note{color:var(--mint);font-size:12px;letter-spacing:.12em}
.ft-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.4vw,28px)}
.ft-col{min-width:0}
.ft-col__title{
  display:flex;align-items:center;gap:8px;
  margin-bottom:14px;
  font-family:var(--font-mono);font-weight:400;font-size:11.5px;letter-spacing:.16em;
  color:var(--mint);
}
.ft-col__title::before{content:"";width:12px;height:2px;background:var(--mint)}
.ft-links{display:flex;flex-direction:column;gap:2px}
.ft-link{
  display:inline-block;
  padding:4px 0;
  font-size:15px;color:#C9D4E8;
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease,transform .16s ease;
}
.ft-link:hover,.ft-link:focus-visible{color:#fff;border-bottom-color:var(--mint);transform:translateX(4px)}
.ft-contact{display:flex;flex-direction:column;align-items:flex-start;min-width:0}
.ft-contact__rows{display:flex;flex-direction:column;gap:10px;width:100%}
.ft-contact__row{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;align-items:baseline}
.ft-contact__k{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--rock)}
.ft-contact__v{font-size:14px;line-height:1.6;color:#DCE4F2;word-break:break-word}
.ft-contact__cta{margin-top:18px}
.ft-legal{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 22px;
  margin-top:clamp(28px,4vw,48px);
  padding-block:18px 26px;
  border-top:1px dashed rgba(185,198,242,.32);
  font-size:12.5px;color:#94A5C2;
}
.ft-legal__copy{color:#C9D4E8}
.ft-legal__icp{color:#8A8578}
.ft-legal__note{margin-left:auto}

/* ========== 9. Panels / tags / media ========== */
.panel{border:var(--bd);background:var(--paper);padding:clamp(18px,3vw,32px);box-shadow:var(--shadow-hard)}
.panel--ink{background:var(--ink);color:#DCE4F2;border-color:var(--ink)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;
  border:2px solid var(--graphite);background:var(--paper);color:var(--graphite);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;line-height:1.6;
}
.tag--mint{background:var(--ink);color:var(--mint);border-color:var(--ink)}
.tag--moss{background:var(--moss);color:var(--paper);border-color:var(--moss)}
.tag--clay{background:var(--clay);color:var(--paper);border-color:var(--clay)}
.media-frame{
  position:relative;
  border:var(--bd);background:var(--paper);
  box-shadow:var(--shadow-hard);
  overflow:hidden;
  aspect-ratio:16/10;
  width:100%;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame>img,.media-frame>svg,.media-frame>picture>img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(28,31,36,.18) 1px,transparent 1px);
  background-size:4px 4px;opacity:.35;
}
.media-frame__label{
  position:absolute;left:0;bottom:0;z-index:1;
  padding:6px 10px;
  background:var(--graphite);color:var(--paper);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
}

/* ========== 10. Breadcrumb ========== */
.breadcrumb{margin-block:clamp(18px,3vw,28px)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;color:var(--rock)}
.breadcrumb__item+.breadcrumb__item::before{content:"/";color:var(--line)}
.breadcrumb__link{color:var(--graphite);border-bottom:1px solid var(--line)}
.breadcrumb__link:hover{color:var(--nav-blue);border-bottom-color:var(--nav-blue)}

/* ========== 11. Responsive ========== */
@media (max-width:1024px){
  .ft-grid{grid-template-columns:1fr 1fr}
  .ft-contact{grid-column:span 2}
}
@media (max-width:959px){
  html{scroll-padding-top:96px}
  .hdr-inner{grid-template-columns:1fr auto auto;grid-template-areas:"brand actions toggle";gap:10px;padding:10px var(--pad)}
  .brand__mark{min-width:46px;height:34px;font-size:14px}
  .brand__name{font-size:16px}
  .nav-toggle{display:inline-flex;grid-area:toggle}
  .hdr-actions{grid-area:actions}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;z-index:70;
    display:none;
    background:var(--paper);
    border-top:2px solid var(--graphite);
    border-bottom:2px solid var(--graphite);
    box-shadow:0 14px 0 rgba(11,21,38,.14);
    max-height:calc(100vh - 96px);
    overflow-y:auto;
    padding:6px var(--pad) 14px;
  }
  .site-header[data-open="true"] .site-nav{display:block}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__item+.site-nav__item{border-top:1px dashed var(--line)}
  .site-nav__link{display:flex;width:100%;padding:13px 4px;font-size:16px}
  .site-nav__link::after{bottom:8px;right:auto;width:64px}
  .hdr-progress{bottom:-2px}
}
@media (max-width:899px){
  .grid{grid-template-columns:1fr}
  .span-3,.span-4,.span-6,.span-8,.span-12{grid-column:1/-1}
}
@media (max-width:720px){
  .ft-grid{grid-template-columns:1fr}
  .ft-contact{grid-column:auto}
  .ft-cols{grid-template-columns:1fr 1fr}
  .ft-legal{flex-direction:column;align-items:flex-start}
  .ft-legal__note{margin-left:0}
}
@media (max-width:520px){
  .brand__note{display:none}
  .hdr-actions .btn--ghost{display:none}
  .ft-cols{grid-template-columns:1fr}
  .panel{box-shadow:4px 4px 0 var(--graphite)}
  .media-frame{box-shadow:4px 4px 0 var(--graphite)}
}

/* ========== 12. 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;
    transition-delay:0ms !important;
  }
}