*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --color-blue:#1B3A5C;
  --color-white:#F8F9FA;
  --color-cream:#F5EBD9;
  --color-dark:#2B1F1A;
  --color-green:#00E676;
  --color-orange:#FF6F00;
  --color-bluegray:#B0C4DE;
  --color-deepblue:#0F2438;
  --font-display:'Futura','DIN Alternate','Helvetica Neue','PingFang SC',sans-serif;
  --font-mono:'Fira Mono','Roboto Mono','Courier New',monospace;
  --font-body:'PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
  --track-width:280px;
  --header-h:64px;
  --transition:240ms cubic-bezier(.4,0,.2,1);
  --shadow:0 2px 10px rgba(15,36,56,.12)
}

html{scroll-behavior:smooth}

body{
  font-family:var(--font-body);
  background:var(--color-white);
  color:var(--color-dark);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility
}

a{
  color:var(--color-blue);
  text-decoration-thickness:1px;
  text-underline-offset:2px;
  transition:color var(--transition)
}

a:hover{color:var(--color-orange)}

p,li{text-wrap:pretty}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.25;
  letter-spacing:.02em;
  color:var(--color-blue);
  text-wrap:balance;
  margin-bottom:.5em
}

h1{font-size:clamp(32px,5vw,64px)}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:20px}

#main-content{
  margin-left:var(--track-width);
  min-height:70vh
}

.skip-link{
  position:fixed;
  top:-100px;
  left:16px;
  z-index:2000;
  padding:12px 20px;
  background:var(--color-green);
  color:var(--color-deepblue);
  font-family:var(--font-display);
  font-weight:700;
  font-size:14px;
  text-decoration:none;
  box-shadow:var(--shadow);
  transition:top var(--transition)
}

.skip-link:focus{top:12px}

.site-header{
  position:fixed;
  top:0;
  left:0;
  width:var(--track-width);
  height:100vh;
  height:100dvh;
  background:linear-gradient(180deg,rgba(255,255,255,.04) 0%,transparent 40%),var(--color-blue);
  color:var(--color-white);
  display:flex;
  flex-direction:column;
  z-index:100;
  border-right:1px solid rgba(255,255,255,.08)
}

.site-header::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--color-green) 0%,var(--color-orange) 100%)
}

.site-header__top{
  padding:28px 24px 20px;
  border-bottom:1px solid rgba(255,255,255,.1);
  position:relative
}

.site-header__drawer{
  flex:1;
  display:flex;
  flex-direction:column;
  min-height:0
}

.brand-mark{
  display:block;
  text-decoration:none;
  color:var(--color-white)
}

.brand-mark:hover{color:var(--color-white)}

.brand-mark__name{
  display:block;
  font-family:var(--font-display);
  font-size:22px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.2;
  position:relative
}

.brand-mark__name::after{
  content:'';
  position:absolute;
  right:-10px;
  top:-4px;
  width:12px;
  height:12px;
  background:var(--color-orange);
  transform:skew(-12deg)
}

.brand-mark__meta{
  display:block;
  margin-top:6px;
  font-family:var(--font-mono);
  font-size:10px;
  color:var(--color-green);
  letter-spacing:.22em;
  text-transform:uppercase
}

.nav-toggle{
  display:none;
  border:none;
  background:transparent;
  padding:10px;
  cursor:pointer;
  width:44px;
  height:44px;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px
}

.nav-toggle__line{
  display:block;
  width:22px;
  height:2px;
  background:var(--color-white);
  transition:transform var(--transition),opacity var(--transition)
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.track-nav{
  flex:1;
  overflow-y:auto;
  padding:16px 0
}

.track-nav__list{list-style:none}

.track-nav__item+.track-nav__item{border-top:1px solid rgba(255,255,255,.06)}

.track-nav__link{
  display:flex;
  align-items:center;
  gap:14px;
  padding:13px 24px;
  color:rgba(255,255,255,.72);
  text-decoration:none;
  font-family:var(--font-display);
  font-size:14px;
  font-weight:700;
  letter-spacing:.05em;
  position:relative;
  transition:color var(--transition),background var(--transition)
}

.track-nav__link::before{
  content:'';
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:3px;
  height:0;
  background:var(--color-green);
  transition:height var(--transition)
}

.track-nav__link:hover,
.track-nav__link:focus-visible{
  color:var(--color-white);
  background:rgba(255,255,255,.05)
}

.track-nav__index{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--color-green);
  min-width:20px
}

.track-nav__label{flex:1}

.track-nav__link[aria-current="page"]{
  color:var(--color-white);
  background:rgba(0,230,118,.08)
}

.track-nav__link[aria-current="page"]::before{height:24px}

.header-actions{
  padding:16px 24px;
  display:flex;
  flex-direction:column;
  gap:10px;
  border-top:1px solid rgba(255,255,255,.1)
}

.header-action{
  display:block;
  text-align:center;
  padding:10px 16px;
  font-family:var(--font-display);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  transition:background var(--transition),color var(--transition),border-color var(--transition)
}

.header-action--primary{
  background:var(--color-green);
  color:var(--color-deepblue)
}

.header-action--primary:hover{
  background:#00d969;
  color:var(--color-deepblue)
}

.header-action--ghost{
  border:1px solid rgba(255,255,255,.35);
  color:var(--color-white)
}

.header-action--ghost:hover{
  border-color:var(--color-white);
  background:rgba(255,255,255,.08);
  color:var(--color-white)
}

.track-progress{
  height:3px;
  background:rgba(255,255,255,.08)
}

.track-progress__bar{
  display:block;
  height:100%;
  width:0%;
  background:linear-gradient(90deg,var(--color-green),var(--color-orange));
  transition:width 80ms linear
}

.track-status{
  padding:14px 24px;
  background:var(--color-deepblue);
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.75);
  border-top:1px solid rgba(255,255,255,.06)
}

.track-status__item{display:inline-block}

.track-status__dot{
  width:6px;
  height:6px;
  background:var(--color-green);
  animation:pulse-dot 2s ease-in-out infinite
}

@keyframes pulse-dot{
  0%,100%{opacity:1}
  50%{opacity:.4}
}

.back-to-top{
  position:fixed;
  right:20px;
  bottom:20px;
  z-index:900;
  min-width:44px;
  height:44px;
  padding:0 14px;
  background:var(--color-blue);
  color:var(--color-white);
  border:1px solid var(--color-blue);
  font-family:var(--font-display);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity var(--transition),transform var(--transition),visibility var(--transition)
}

.back-to-top[data-visible]{
  opacity:1;
  visibility:visible;
  transform:translateY(0)
}

.back-to-top:hover{
  background:var(--color-green);
  border-color:var(--color-green);
  color:var(--color-deepblue)
}

.back-to-top__arrow{font-size:16px;line-height:1}
.back-to-top__label{letter-spacing:.12em}

.site-footer{
  margin-left:var(--track-width);
  background:var(--color-deepblue);
  color:rgba(255,255,255,.8);
  border-top:2px solid var(--color-green)
}

.site-footer__inner{
  max-width:1360px;
  margin:0 auto;
  padding:56px 32px 48px;
  display:grid;
  grid-template-columns:1.4fr 2fr;
  gap:48px
}

.footer-brand__name{
  font-family:var(--font-display);
  font-size:26px;
  font-weight:700;
  color:var(--color-white);
  text-decoration:none;
  letter-spacing:.04em;
  display:block;
  margin-bottom:12px
}

.footer-brand__name:hover{color:var(--color-green)}

.footer-brand__desc{
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.6);
  max-width:360px
}

.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px
}

.footer-nav__group{min-width:0}

.footer-nav__title{
  font-family:var(--font-display);
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--color-bluegray);
  margin-bottom:12px;
  padding-bottom:8px;
  border-bottom:1px solid rgba(255,255,255,.12);
  position:relative
}

.footer-nav__title::after{
  content:'';
  position:absolute;
  left:0;
  bottom:-1px;
  width:28px;
  height:1px;
  background:var(--color-green)
}

.footer-nav__list{list-style:none}

.footer-nav__list li+li{margin-top:6px}

.footer-nav__list a{
  color:rgba(255,255,255,.65);
  text-decoration:none;
  font-size:14px;
  transition:color var(--transition),padding-left var(--transition)
}

.footer-nav__list a:hover{
  color:var(--color-white);
  padding-left:4px
}

.footer-nav__list--contact li{
  font-size:13px;
  color:rgba(255,255,255,.6);
  line-height:1.7
}

.site-footer__bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:16px 32px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  max-width:1360px;
  margin:0 auto;
  font-size:12px;
  color:rgba(255,255,255,.45);
  font-family:var(--font-mono)
}

.site-footer__bottom p{margin:0}

.main-container{
  max-width:1320px;
  margin:0 auto;
  padding:0 32px
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  list-style:none;
  gap:6px;
  font-size:13px;
  padding:0
}

.breadcrumb__item{
  display:flex;
  align-items:center
}

.breadcrumb__item a{
  color:var(--color-blue);
  text-decoration:none
}

.breadcrumb__item a:hover{color:var(--color-orange)}

.breadcrumb__item[aria-current="page"]{
  color:var(--color-dark);
  font-weight:500
}

.breadcrumb__item:not(:last-child)::after{
  content:'/';
  margin-left:6px;
  color:var(--color-bluegray);
  font-family:var(--font-mono)
}

.btn{
  display:inline-block;
  border:1px solid transparent;
  background:var(--color-blue);
  color:var(--color-white);
  font-family:var(--font-display);
  font-weight:700;
  font-size:14px;
  letter-spacing:.04em;
  padding:10px 24px;
  text-decoration:none;
  transition:all var(--transition)
}

.btn:hover{
  background:var(--color-deepblue);
  color:var(--color-white)
}

.btn--primary{
  background:var(--color-green);
  color:var(--color-deepblue);
  border-color:var(--color-green)
}

.btn--primary:hover{
  background:#00d969;
  border-color:#00d969;
  color:var(--color-deepblue)
}

.btn--ghost{
  background:transparent;
  border-color:var(--color-blue);
  color:var(--color-blue)
}

.btn--ghost:hover{
  background:var(--color-blue);
  color:var(--color-white)
}

.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}

.card{
  background:var(--color-white);
  border:1px solid var(--color-bluegray);
  padding:24px;
  transition:border-color var(--transition),box-shadow var(--transition)
}

.card:hover{
  border-color:var(--color-blue);
  box-shadow:var(--shadow)
}

.card--cream{background:var(--color-cream)}

.media-frame{
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg,var(--color-blue) 0%,var(--color-bluegray) 100%);
  aspect-ratio:4/3
}

.media-frame--wide{aspect-ratio:16/9}

.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  transition:transform 400ms ease
}

.media-frame:hover img{transform:scale(1.02)}

:focus-visible{
  outline:2px solid var(--color-green);
  outline-offset:2px
}

@media (max-width:920px){
  #main-content{
    margin-left:0;
    margin-top:var(--header-h)
  }

  .site-footer{
    margin-left:0
  }

  .site-header{
    width:100%;
    height:auto;
    min-height:var(--header-h);
    flex-direction:row;
    flex-wrap:wrap;
    border-right:none;
    border-bottom:1px solid rgba(255,255,255,.1)
  }

  .site-header__top{
    width:100%;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    padding:10px 16px;
    min-height:var(--header-h);
    border-bottom:none
  }

  .brand-mark__name{font-size:18px}
  .brand-mark__meta{font-size:10px;margin-top:2px}

  .nav-toggle{display:flex}

  .site-header__drawer{
    flex:0 0 100%;
    max-height:0;
    overflow:hidden;
    transition:max-height 300ms ease
  }

  .site-header__drawer[data-open]{
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    border-top:1px solid rgba(255,255,255,.08)
  }

  .track-nav{
    padding:8px 0
  }

  .track-nav__link{
    padding:12px 20px
  }

  .header-actions{
    flex-direction:row;
    padding:12px 16px
  }

  .header-actions .header-action{flex:1}

  .track-status{
    width:100%;
    justify-content:center
  }

  .site-footer__inner{
    grid-template-columns:1fr;
    padding:40px 20px;
    gap:32px
  }

  .footer-nav{
    grid-template-columns:1fr 1fr;
    gap:32px 16px
  }

  .site-footer__bottom{
    flex-direction:column;
    align-items:center;
    text-align:center;
    padding:16px 20px
  }

  .grid--3,.grid--4{grid-template-columns:1fr}

  .back-to-top{
    right:12px;
    bottom:12px
  }
}

@media (min-width:921px) and (max-width:1200px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .footer-nav{grid-template-columns:1fr 1fr;gap:32px 24px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important
  }
  html{scroll-behavior:auto}
}