/* ========== 01 · RESET ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure,blockquote{margin:0}
ul,ol{padding:0}
ul[class],ol[class]{list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
main{display:block}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
::selection{background:var(--cyan);color:#08110F}

/* ========== 02 · TOKENS ========== */
:root{
  --ink:#101614;
  --deep:#0B241D;
  --moss:#153B31;
  --teal:#0E3B36;
  --cyan:#58F2D0;
  --amber:#F2B45C;
  --paper:#F4EFE4;
  --sage:#8FA79C;
  --line:#31554C;
  --cyan-06:rgba(88,242,208,.06);
  --cyan-12:rgba(88,242,208,.12);
  --cyan-40:rgba(88,242,208,.42);
  --amber-10:rgba(242,180,92,.10);
  --amber-45:rgba(242,180,92,.45);
  --r-sm:12px;
  --r-md:24px;
  --r-lg:32px;
  --r-pill:999px;
  --font-display:"Archivo Black","Noto Sans SC","Source Han Sans SC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --shell:1280px;
  --pad:clamp(1rem,4vw,3.25rem);
  --ease:cubic-bezier(.4,.1,.2,1);
}

/* ========== 03 · BASE ========== */
body{
  min-height:100vh;
  background:
    radial-gradient(120% 78% at 6% -12%,rgba(88,242,208,.10),transparent 56%),
    radial-gradient(92% 70% at 108% 2%,rgba(242,180,92,.07),transparent 60%),
    linear-gradient(180deg,#0B241D 0%,#101614 44%,#101614 100%);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:1rem;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.08;letter-spacing:-.02em}
h1{font-size:clamp(2.4rem,6vw,5.6rem)}
h2{font-size:clamp(1.6rem,3vw,2.6rem)}
h3{font-size:1.15rem;line-height:1.35;letter-spacing:-.01em}
p{max-width:70ch}
strong{font-weight:700;color:var(--paper)}
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--pad)}

/* ========== 04 · SKIP LINK ========== */
.skip-link{
  position:fixed;top:.5rem;left:.5rem;z-index:200;
  transform:translateY(-160%);
  display:inline-flex;align-items:center;
  padding:.6rem 1.1rem;border-radius:var(--r-pill);
  background:var(--cyan);color:#08110F;
  font-size:.86rem;font-weight:700;letter-spacing:.02em;
  transition:transform .18s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0);outline-offset:2px}

/* ========== 05 · HEADER ========== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(11,36,29,.97) 0%,rgba(16,22,20,.95) 100%);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  isolation:isolate;
}
.header-shell{padding-block:.6rem 0}
.header-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(49,85,76,.55);overflow:hidden}
.header-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
  transition:transform .12s linear;
}
.brandbar{display:flex;align-items:center;gap:clamp(.7rem,2vw,1.4rem);min-height:56px}
.brand{display:inline-flex;align-items:center;gap:.65rem;min-width:0}
.brand__mark{
  display:grid;place-items:center;
  width:2.3rem;height:2.3rem;flex:0 0 auto;
  border-radius:14px;
  border:1px solid var(--cyan-40);
  background:radial-gradient(120% 120% at 20% 10%,rgba(88,242,208,.22),rgba(11,36,29,.9));
  color:var(--cyan);
  font-family:var(--font-mono);font-size:.82rem;font-weight:600;letter-spacing:.04em;
}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{font-family:var(--font-display);font-size:1.02rem;line-height:1.1;letter-spacing:-.01em}
.brand__sub{
  margin-top:.18rem;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--sage);white-space:nowrap;
}
.status{
  display:flex;align-items:center;gap:.5rem;
  padding-left:clamp(.6rem,2vw,1.15rem);
  border-left:1px solid var(--line);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.09em;
  color:var(--sage);text-transform:uppercase;white-space:nowrap;
}
.status__value{color:var(--paper);text-transform:none;letter-spacing:.04em}
.status__dot{
  width:7px;height:7px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 0 3px rgba(88,242,208,.18);
  animation:pulse 3.6s var(--ease) infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(88,242,208,.18)}
  50%{box-shadow:0 0 0 7px rgba(88,242,208,.04)}
}
.quick{margin-left:auto;display:flex;align-items:center;gap:.45rem}
.quick__link,.quick__save{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.42rem .85rem;border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(14,59,54,.35);
  color:var(--sage);
  font-size:.8rem;font-weight:500;letter-spacing:.02em;white-space:nowrap;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.quick__link:hover,.quick__save:hover{
  color:var(--cyan);border-color:var(--cyan-40);background:var(--cyan-06);transform:translateY(-1px);
}
.quick__link:focus-visible,.quick__save:focus-visible,.nav-toggle:focus-visible{outline-offset:2px}
.quick__save-dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.75}
.quick__save[aria-pressed="true"]{color:var(--amber);border-color:var(--amber-45);background:var(--amber-10)}
.nav-toggle{
  display:none;align-items:center;gap:.5rem;
  padding:.42rem .85rem;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(14,59,54,.35);
  color:var(--paper);font-size:.8rem;font-weight:500;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars i{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-3px) rotate(-45deg)}
.nav-toggle__text{letter-spacing:.04em}

.nav{
  display:flex;align-items:center;gap:1rem;
  margin-top:.55rem;padding-block:.3rem;
  border-top:1px solid rgba(49,85,76,.65);
}
.nav__list{display:flex;align-items:center;gap:.15rem;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.nav__list::-webkit-scrollbar{display:none}
.nav__item{display:flex}
.nav__link{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.5rem .8rem;border-radius:var(--r-pill);
  font-size:.9rem;color:rgba(244,239,228,.72);white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav__num{font-family:var(--font-mono);font-size:.72rem;font-weight:600;letter-spacing:-.02em;color:var(--sage);transition:color .2s var(--ease)}
.nav__label{letter-spacing:.02em}
.nav__link:hover{background:var(--cyan-06);color:var(--paper)}
.nav__link:hover .nav__num{color:var(--cyan)}
.nav__link[aria-current="page"]{
  background:var(--cyan-12);color:var(--paper);
  box-shadow:inset 0 -2px 0 var(--cyan);
}
.nav__link[aria-current="page"] .nav__num{color:var(--cyan)}
.nav__hint{display:none;margin-left:auto;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;color:var(--sage)}
@media (min-width:1200px){.nav__hint{display:block}}

/* ========== 06 · FOOTER ========== */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,8vw,6rem);
  border-top:1px solid var(--line);
  background:
    radial-gradient(90% 120% at 88% 0%,rgba(88,242,208,.07),transparent 58%),
    linear-gradient(180deg,#0B241D 0%,#101614 100%);
  color:var(--paper);
}
.footer-shell{padding-block:clamp(2rem,5vw,3.25rem) 1.4rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr .85fr;gap:clamp(1.5rem,4vw,3rem)}
.footer-col{min-width:0}
.footer-brand{font-family:var(--font-display);font-size:1.15rem;letter-spacing:-.01em}
.footer-line{margin-top:.45rem;font-size:.9rem;color:var(--sage);max-width:26ch}
.footer-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.3rem .9rem;margin-top:1.15rem;font-size:.88rem}
.footer-index li{display:flex;align-items:baseline;gap:.45rem}
.footer-index__num{font-family:var(--font-mono);font-size:.7rem;font-weight:600;color:var(--amber)}
.footer-index a{color:rgba(244,239,228,.76);transition:color .2s var(--ease)}
.footer-index a:hover{color:var(--cyan)}
.footer-title{
  display:flex;align-items:center;gap:.5rem;
  font-family:var(--font-body);font-size:.82rem;font-weight:700;
  letter-spacing:.16em;color:var(--paper);
}
.footer-title::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--cyan)}
.contact-list{display:grid;gap:.12rem;margin-block:.9rem 1rem;font-size:.9rem}
.contact-list dt{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--sage)}
.contact-list dd{margin-bottom:.5rem;color:var(--paper);word-break:break-word}
.copy-btn{
  padding:.45rem .95rem;border-radius:var(--r-pill);
  border:1px solid var(--cyan-40);background:var(--cyan-06);color:var(--cyan);
  font-size:.8rem;font-weight:600;letter-spacing:.02em;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.copy-btn:hover{background:rgba(88,242,208,.18);color:var(--paper);transform:translateY(-1px)}
.footer-msg{min-height:1.1rem;margin-top:.4rem;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.04em;color:var(--amber)}
.footer-note{margin-top:.55rem;font-size:.79rem;line-height:1.65;color:var(--sage);max-width:32ch}
.footer-legal{display:grid;gap:.45rem;margin-top:.9rem;font-size:.88rem}
.footer-legal a{color:rgba(244,239,228,.76);transition:color .2s var(--ease)}
.footer-legal a:hover{color:var(--cyan)}
.footer-icp{
  margin-top:1rem;padding-top:.85rem;
  border-top:1px solid rgba(49,85,76,.45);
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.08em;color:var(--sage);
}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.6rem 1.5rem;
  margin-top:clamp(1.75rem,4vw,2.75rem);padding-top:1rem;
  border-top:1px solid var(--line);
  font-size:.78rem;color:var(--sage);
}
.footer-tick{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--font-mono);letter-spacing:.04em}
.footer-tick::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--cyan)}
.footer-copy{font-family:var(--font-mono);letter-spacing:.04em}

/* ========== 07 · SHARED COMPONENTS ========== */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.72rem 1.25rem;border-radius:var(--r-pill);
  border:1px solid var(--line);
  font-size:.9rem;font-weight:600;letter-spacing:.02em;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--accent{background:var(--cyan);border-color:transparent;color:#08110F}
.btn--accent:hover{background:#7CF7DD;color:#08110F}
.btn--ghost{background:transparent;color:var(--paper)}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan-40);background:var(--cyan-06)}

.breadcrumb{font-family:var(--font-mono);font-size:.76rem;letter-spacing:.04em}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;color:var(--sage)}
.breadcrumb__item{display:inline-flex;align-items:center;gap:.4rem}
.breadcrumb__link{color:var(--sage);transition:color .2s var(--ease)}
.breadcrumb__link:hover{color:var(--cyan)}
.breadcrumb__sep{color:var(--line)}
.breadcrumb__item[aria-current="page"],.breadcrumb [aria-current="page"]{color:var(--paper)}

.section-head{display:flex;flex-direction:column;gap:.5rem;margin-bottom:clamp(1rem,2.5vw,1.75rem)}
.eyebrow{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--font-mono);font-size:.7rem;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--cyan)}
.num{font-family:var(--font-mono);font-weight:600;letter-spacing:-.02em;color:var(--amber);font-variant-numeric:tabular-nums}
.hairline{border:0;border-top:1px solid var(--line);margin:clamp(1.5rem,4vw,2.5rem) 0}

.grid{display:grid;gap:clamp(1rem,2.4vw,2rem);grid-template-columns:repeat(12,minmax(0,1fr));align-items:start}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--halves{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:1024px){
  .grid,.grid--split,.grid--halves{grid-template-columns:minmax(0,1fr)}
}

.card{
  position:relative;
  padding:clamp(1.1rem,2.4vw,1.75rem);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(21,59,49,.92),rgba(11,36,29,.86));
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--cyan-40);box-shadow:0 18px 44px -26px rgba(0,0,0,.95)}
.card--raised{margin-top:0}
@media (min-width:1025px){.card--raised{margin-top:clamp(.5rem,2vw,2rem)}}

.pill{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.24rem .72rem;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(14,59,54,.5);
  font-family:var(--font-mono);font-size:.7rem;font-weight:600;
  letter-spacing:.08em;color:var(--sage);
}
.pill--current{color:var(--cyan);border-color:var(--cyan-40);background:var(--cyan-12)}
.pill--amber{color:var(--amber);border-color:var(--amber-45);background:var(--amber-10)}

.prose{max-width:68ch;font-size:1.02rem;line-height:1.8}
.prose > * + *{margin-top:1.1em}
.prose h2,.prose h3{margin-top:1.6em}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose a:hover{color:var(--paper)}
.prose ul{list-style:none;padding-left:0}
.prose ul > li{position:relative;padding-left:1.35rem}
.prose ul > li + li{margin-top:.45rem}
.prose ul > li::before{content:"";position:absolute;left:0;top:.72em;width:12px;height:2px;border-radius:2px;background:var(--cyan)}
.prose blockquote{
  padding:.9rem 1.15rem;border-left:2px solid var(--amber);
  background:var(--amber-10);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--paper);font-size:.96rem;
}

.media{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(145deg,#153B31 0%,#0B241D 100%);
}
.media__frame{position:relative;aspect-ratio:16/10;overflow:hidden}
.media--tall .media__frame{aspect-ratio:4/5}
.media__img{width:100%;height:100%;object-fit:cover;filter:saturate(.86) contrast(1.06)}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(88,242,208,.07) 0 1px,transparent 1px 4px);
  mix-blend-mode:screen;opacity:.55;
}
.media__caption{
  position:relative;z-index:1;
  padding:.6rem .95rem;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.04em;color:var(--sage);
}

.toc{display:grid;gap:.15rem;padding:.85rem;border:1px solid var(--line);border-radius:var(--r-md);background:rgba(14,59,54,.32)}
.toc__link{
  display:flex;align-items:center;gap:.55rem;
  padding:.42rem .6rem;border-radius:var(--r-sm);
  font-size:.86rem;color:var(--sage);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.toc__link:hover{color:var(--paper);background:var(--cyan-06)}
.toc__link[aria-current]{
  color:var(--paper);background:var(--cyan-12);
  box-shadow:inset 0 -2px 0 var(--cyan);
}

/* ========== 08 · REVEAL ========== */
[data-reveal]{transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal-armed [data-reveal]{opacity:0;transform:translateY(12px)}
.reveal-armed [data-reveal].is-in{opacity:1;transform:none}

/* ========== 09 · RESPONSIVE SHELL ========== */
@media (max-width:1100px){
  .status{display:none}
}
@media (max-width:979px){
  .brand__sub{display:none}
  .nav-toggle{display:inline-flex}
  .nav{display:none;margin-top:.5rem;padding-block:.55rem;border-top:1px solid var(--line)}
  .nav[data-open]{display:flex;flex-direction:column;align-items:stretch;gap:.35rem}
  .nav__list{flex-direction:column;align-items:stretch;gap:.2rem;overflow:visible}
  .nav__item{width:100%}
  .nav__link{width:100%;justify-content:flex-start;border-radius:16px;padding:.72rem .85rem;font-size:1rem}
  .nav__hint{display:block;margin-left:0;padding:.2rem .25rem .1rem}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col--brand{grid-column:1 / -1}
}
@media (max-width:640px){
  .quick__link{padding:.42rem .65rem;font-size:.76rem}
  .footer-grid{grid-template-columns:1fr}
  .footer-index{grid-template-columns:1fr}
  .footer-base{flex-direction:column;align-items:flex-start}
  .media--tall .media__frame{aspect-ratio:1/1}
}

/* ========== 10 · MOTION SAFETY ========== */
@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;
  }
  .status__dot{animation:none}
  .reveal-armed [data-reveal]{opacity:1;transform:none}
  .card:hover,.btn:hover,.quick__link:hover,.quick__save:hover,.copy-btn:hover{transform:none}
}