:root{
  --tu:#A9472E;
  --ink:#161411;
  --paper:#F2E8D6;
  --lake:#1F6F78;
  --neon:#39F4E4;
  --yellow:#F3B63F;
  --green:#1F8A5B;
  --clay:#D98A68;
  --char:#2F2B26;
  --mist:#FFF9EE;
  --ink-deep:#100E0C;
  --tint:#EADFCA;
  --rail-w:64px;
  --border:3px;
  --shadow-hard:7px 7px 0 var(--ink);
  --shadow-tu:8px 8px 0 var(--tu);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --fs-xs:.75rem;
  --fs-sm:.875rem;
  --fs-base:1rem;
  --fs-md:1.25rem;
  --fs-lg:1.75rem;
  --fs-xl:clamp(1.9rem,3.6vw,2.75rem);
  --fs-2xl:clamp(2.2rem,5.4vw,4.5rem);
  --fs-3xl:clamp(2.6rem,8vw,6.5rem);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap-block:clamp(2.5rem,6vw,5rem);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--paper);
  background-image:repeating-linear-gradient(118deg,rgba(169,71,46,.055) 0 2px,transparent 2px 28px);
  color:var(--char);
  font-family:var(--font-sans);
  font-size:var(--fs-base);
  line-height:1.75;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;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;cursor:pointer}
[hidden]{display:none!important}
:focus-visible{outline:3px solid var(--focus,var(--lake));outline-offset:3px}
::selection{background:var(--yellow);color:var(--ink)}

.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}

.container{width:100%;max-width:1280px;margin-inline:auto;padding-inline:clamp(1rem,4vw,3rem)}

.section{padding-block:var(--gap-block)}
.section--paper{background:var(--paper);color:var(--char)}
.section--tint{background:var(--tint);color:var(--char)}
.section--ink{background:var(--ink);color:var(--mist);--focus:var(--neon)}
.section--lake{background:var(--lake);color:var(--mist);--focus:var(--neon)}
.section--tu{background:var(--tu);color:var(--mist);--focus:var(--neon)}
.section--ink .lead,.section--lake .lead,.section--tu .lead{color:rgba(255,249,238,.82)}

.display{font-size:var(--fs-3xl);font-weight:900;line-height:.94;letter-spacing:-.03em}
.headline{font-size:var(--fs-2xl);font-weight:900;line-height:1.02;letter-spacing:-.025em}
.title{font-size:var(--fs-xl);font-weight:900;line-height:1.12;letter-spacing:-.015em}
.eyebrow{font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:700;letter-spacing:.3em;text-transform:uppercase;color:var(--tu)}
.lead{font-size:var(--fs-md);line-height:1.7;font-weight:500}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.02em}
.prose{max-width:66ch}
.prose p+p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em;font-weight:900;line-height:1.2}
.prose ul,.prose ol{margin-top:1em;padding-left:1.2em;list-style:disc}
.prose li+li{margin-top:.4em}
.prose a{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;color:var(--tu)}

.stack>*+*{margin-top:var(--stack-gap,1rem)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem}
.rule{height:3px;border:0;margin:0;background:var(--ink)}
.band{background:var(--tu);color:var(--mist);padding-block:clamp(1.5rem,4vw,2.5rem);clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),0 100%)}

.grid{display:grid;gap:clamp(1rem,2.4vw,2rem)}
.grid--2{grid-template-columns:1fr}
.grid--3{grid-template-columns:1fr}
.grid--split{grid-template-columns:1fr}
@media(min-width:720px){
  .grid--2{grid-template-columns:repeat(2,1fr)}
  .grid--3{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:1000px){
  .grid--3{grid-template-columns:repeat(3,1fr)}
  .grid--split{grid-template-columns:7fr 5fr;align-items:start}
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.78rem 1.35rem;
  border:var(--border) solid var(--ink);
  background:var(--paper);color:var(--ink);
  font-size:var(--fs-sm);font-weight:900;letter-spacing:.08em;line-height:1.3;
  box-shadow:6px 6px 0 var(--ink);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background .16s var(--ease),color .16s var(--ease);
}
.btn:hover{transform:translate(3px,3px);box-shadow:3px 3px 0 var(--ink)}
.btn--primary{background:var(--tu);color:var(--mist)}
.btn--neon{background:var(--neon);color:var(--ink)}
.btn--ghost{background:transparent;color:inherit;border-color:currentColor;box-shadow:6px 6px 0 var(--tu)}
.btn--ghost:hover{box-shadow:3px 3px 0 var(--tu)}
.btn--line{background:transparent;color:var(--mist);border-color:var(--mist);box-shadow:6px 6px 0 rgba(22,20,17,.55)}
.btn--line:hover{box-shadow:3px 3px 0 rgba(22,20,17,.55)}

.tag{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.12rem .55rem;border:2px solid currentColor;
  font-size:var(--fs-xs);font-weight:700;letter-spacing:.14em;line-height:1.7;
}
.tag--tu{color:var(--tu)}
.tag--lake{color:var(--lake)}
.tag--green{color:var(--green)}
.tag--yellow{color:var(--ink);background:var(--yellow);border-color:var(--ink)}
.tag--neon{color:var(--ink);background:var(--neon);border-color:var(--ink)}

.breadcrumb{padding-block:1rem .25rem}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;font-size:var(--fs-sm);font-weight:700;letter-spacing:.06em;color:var(--tu)}
.breadcrumb__list li+li::before{content:"›";margin-right:.45rem;color:var(--clay)}
.breadcrumb__link{color:var(--char);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
.breadcrumb__link:hover{color:var(--tu)}
.breadcrumb [aria-current="page"]{color:var(--tu)}

.card{
  position:relative;
  background:var(--mist);color:var(--char);
  border:var(--border) solid var(--ink);
  box-shadow:var(--shadow-hard);
  padding:clamp(1rem,2.5vw,1.75rem);
}
.card--paper{background:var(--paper)}
.card--ink{background:var(--ink);color:var(--mist);box-shadow:var(--shadow-tu)}
.card__title{font-size:var(--fs-lg);font-weight:900;line-height:1.15}
.card__label{font-family:var(--font-mono);font-size:var(--fs-xs);letter-spacing:.26em;color:var(--tu)}
.card--ink .card__label{color:var(--neon)}

.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:4/3;
  background:var(--ink);
  border:var(--border) solid var(--ink);
  box-shadow:var(--shadow-tu);
}
.media-frame__img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(112deg,rgba(57,244,228,.16) 0 2px,transparent 2px 18px);
  mix-blend-mode:screen;opacity:.7;
}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:1;
  padding:.6rem .8rem;
  background:rgba(22,20,17,.84);color:var(--mist);
  border-top:2px solid var(--neon);
  font-size:var(--fs-xs);letter-spacing:.1em;font-weight:700;
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame--plain{box-shadow:none}

/* ---------- header ---------- */
.site-header{
  position:relative;z-index:50;
  background:var(--ink);color:var(--mist);
  border-bottom:var(--border) solid var(--tu);
  --focus:var(--neon);
}
.skip-link{
  position:absolute;top:-140px;left:1rem;z-index:90;
  display:inline-block;padding:.7rem 1.1rem;
  background:var(--neon);color:var(--ink);
  border:var(--border) solid var(--ink);
  box-shadow:5px 5px 0 var(--ink);
  font-size:var(--fs-sm);font-weight:900;letter-spacing:.1em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:.6rem}

.scroll-meter{
  position:fixed;top:0;left:0;right:0;height:4px;z-index:70;
  background:rgba(22,20,17,.4);pointer-events:none;
}
.scroll-meter__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--tu),var(--yellow),var(--neon));
  box-shadow:0 0 12px rgba(57,244,228,.55);
}

.brand-rail{
  display:none;
  position:fixed;left:0;top:0;bottom:0;width:var(--rail-w);z-index:45;
  flex-direction:column;align-items:center;justify-content:center;gap:1rem;
  background:var(--ink);color:var(--mist);
  border-right:var(--border) solid var(--tu);
}
.brand-rail::after{
  content:"";position:absolute;top:1.1rem;left:50%;transform:translateX(-50%);
  width:12px;height:12px;border-radius:50%;
  background:var(--neon);box-shadow:0 0 0 4px rgba(57,244,228,.14);
}
.brand-rail__mark{
  writing-mode:vertical-rl;
  font-size:.95rem;font-weight:900;letter-spacing:.28em;color:var(--mist);
}
.brand-rail__unit{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);font-size:.625rem;letter-spacing:.36em;color:var(--clay);
}
.brand-rail__rule{width:2px;height:40px;background:var(--tu)}

.header-utility{background:var(--ink);border-bottom:2px solid rgba(242,232,214,.16)}
.header-utility__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.5rem 1rem;min-height:42px;padding-block:.35rem;
}
.header-utility__note{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.688rem;font-weight:700;letter-spacing:.2em;color:rgba(255,249,238,.7);
}
.header-utility__note--mono{font-family:var(--font-mono);letter-spacing:.18em;color:var(--yellow)}
.header-utility__dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--neon);box-shadow:0 0 0 3px rgba(57,244,228,.16);
}
.header-utility__actions{display:flex;align-items:center;gap:1rem}
.header-utility__action{
  font-size:.688rem;font-weight:700;letter-spacing:.2em;
  color:var(--neon);border-bottom:2px solid transparent;padding-bottom:2px;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.header-utility__action:hover,.header-utility__action:focus-visible{border-bottom-color:var(--neon)}
.header-utility__action--soft{color:rgba(255,249,238,.72)}
.header-utility__action--soft:hover,.header-utility__action--soft:focus-visible{color:var(--yellow);border-bottom-color:var(--yellow)}
@media(max-width:639px){
  .header-utility__note--mono{display:none}
  .header-utility__action--soft{display:none}
}

.masthead{
  position:relative;overflow:hidden;
  background:var(--paper);color:var(--ink);
  border-bottom:var(--border) solid var(--ink);
  --focus:var(--tu);
}
.masthead::after{
  content:"";position:absolute;top:0;right:0;height:100%;
  width:clamp(90px,22%,280px);
  background:var(--tu);
  clip-path:polygon(26% 0,100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.masthead::before{
  content:"";position:absolute;left:0;bottom:0;
  width:clamp(70px,16%,200px);height:8px;background:var(--yellow);
}
.masthead__inner{
  position:relative;z-index:1;
  display:grid;justify-items:center;text-align:center;gap:.35rem;
  padding-block:clamp(1.1rem,3vw,1.9rem) clamp(1rem,2.4vw,1.5rem);
}
.masthead__eyebrow{
  font-family:var(--font-mono);font-size:.688rem;font-weight:700;
  letter-spacing:.34em;color:var(--tu);
}
.masthead__mark{
  display:inline-block;
  transform:skewX(-4deg);
  font-size:clamp(1.6rem,4.6vw,2.9rem);
  font-weight:900;line-height:1.08;letter-spacing:-.01em;
  color:var(--ink);
  transition:color .18s var(--ease);
}
.masthead__mark:hover{color:var(--tu)}
.masthead__motto{
  display:inline-flex;align-items:center;gap:.7rem;
  font-size:.813rem;font-weight:700;letter-spacing:.3em;color:var(--char);
}
.masthead__motto::before,.masthead__motto::after{
  content:"";width:clamp(18px,5vw,44px);height:2px;background:var(--clay);
}

.nav-toggle{
  display:none;
  position:absolute;right:0;top:50%;transform:translateY(-50%);z-index:2;
  align-items:center;gap:.45rem;
  padding:.48rem .7rem;
  background:var(--ink);color:var(--mist);
  border:var(--border) solid var(--ink);
  box-shadow:4px 4px 0 var(--tu);
  font-size:.75rem;font-weight:900;letter-spacing:.14em;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:18px}
.nav-toggle__bars i{display:block;height:2px;background:var(--neon);transition:transform .2s var(--ease),opacity .2s 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)}

.header-nav{background:var(--ink);border-top:2px solid rgba(242,232,214,.12)}
.header-nav__inner{display:flex;justify-content:center;align-items:center;padding-block:.35rem}
.primary-nav{width:100%}
.primary-nav__list{display:flex;flex-wrap:wrap;justify-content:center;gap:.15rem .35rem}
.primary-nav__link{
  display:inline-block;
  padding:.5rem .8rem;
  border:2px solid transparent;
  font-size:.938rem;font-weight:700;letter-spacing:.08em;
  color:rgba(255,249,238,.8);
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.primary-nav__link:hover{background:var(--paper);color:var(--ink);border-color:var(--ink)}
.primary-nav__link[aria-current="page"]{color:var(--neon);border-color:var(--neon)}
.primary-nav__link[aria-current="page"]:hover{background:var(--neon);color:var(--ink);border-color:var(--ink)}

.film-bar{
  background:var(--tu);
  border-top:var(--border) solid var(--ink);
  border-bottom:var(--border) solid var(--ink);
  --focus:var(--neon);
}
.film-bar__inner{display:flex;align-items:center;gap:.9rem;padding-block:.6rem}
.film-bar__cap{
  flex:0 0 auto;
  padding-right:.9rem;
  border-right:2px solid rgba(255,249,238,.4);
  font-size:.688rem;font-weight:900;letter-spacing:.26em;color:rgba(255,249,238,.92);
}
.film-strip{
  flex:1 1 auto;
  display:flex;gap:.45rem;
  overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;
  scroll-behavior:smooth;
  padding-block:.15rem;
  cursor:grab;
  touch-action:pan-x pan-y;
}
.film-strip::-webkit-scrollbar{display:none}
.film-strip[data-dragging]{cursor:grabbing;scroll-behavior:auto;user-select:none}
.film-strip:focus-visible{outline:3px solid var(--neon);outline-offset:4px}
.film-strip__item{flex:0 0 auto}
.film-strip__chip{
  display:inline-block;white-space:nowrap;
  padding:.22rem .62rem;
  background:var(--paper);color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:3px 3px 0 var(--ink);
  font-size:.813rem;font-weight:700;letter-spacing:.08em;
}
.film-strip__chip--flag{background:var(--yellow)}
@media(max-width:639px){
  .film-bar__cap{display:none}
}

@media(max-width:899px){
  .nav-toggle{display:inline-flex}
  .masthead::after{display:none}
  .masthead__inner{padding-inline-end:5.5rem}
  .header-nav{
    display:grid;grid-template-rows:0fr;visibility:hidden;
    transition:grid-template-rows .28s var(--ease),visibility .28s var(--ease);
  }
  .header-nav__inner{display:block;min-height:0;overflow:hidden;padding-block:0}
  .site-header[data-open] .header-nav{grid-template-rows:1fr;visibility:visible}
  .site-header[data-open] .header-nav__inner{padding-block:.6rem 1rem}
  .primary-nav__list{flex-direction:column;gap:.4rem}
  .primary-nav__link{display:block;padding:.8rem 1rem;font-size:1rem;border-width:2px;border-color:rgba(242,232,214,.2)}
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--mist);--focus:var(--neon)}
.footer-cta{
  position:relative;
  background:var(--tu);color:var(--mist);
  padding-block:clamp(2rem,5vw,3.2rem) clamp(3.4rem,8vw,5.4rem);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 40px),0 100%);
}
.footer-cta__inner{display:grid;gap:1.4rem;grid-template-columns:1fr;align-items:end}
.footer-cta__title{
  font-size:clamp(1.7rem,4.6vw,3.2rem);font-weight:900;line-height:1.05;letter-spacing:-.02em;
}
.footer-cta__sub{font-size:clamp(1rem,2vw,1.35rem);font-weight:700;letter-spacing:.08em;color:rgba(255,249,238,.9)}
.footer-cta__actions{display:flex;flex-wrap:wrap;gap:.8rem}
@media(min-width:820px){
  .footer-cta__inner{grid-template-columns:1.15fr .85fr;gap:2rem}
  .footer-cta__actions{justify-content:flex-end}
}

.footer-main{padding-block:clamp(2rem,5vw,3.4rem)}
.footer-main__inner{display:grid;gap:clamp(1.6rem,4vw,2.6rem);grid-template-columns:1fr}
.footer-brand{display:flex;flex-direction:column;gap:.55rem;padding-bottom:1.2rem;border-bottom:var(--border) solid var(--tu)}
.footer-brand__mark{
  display:inline-block;transform:skewX(-4deg);transform-origin:left bottom;
  font-size:clamp(1.3rem,2.4vw,1.75rem);font-weight:900;letter-spacing:-.01em;color:var(--mist);
}
.footer-brand__meta{font-family:var(--font-mono);font-size:.688rem;letter-spacing:.3em;color:var(--clay)}
.footer-brand__desc{font-size:.875rem;line-height:1.7;color:rgba(255,249,238,.72);max-width:26ch}
.footer-brand__badge{
  align-self:flex-start;margin-top:.35rem;
  padding:.2rem .6rem;
  background:var(--neon);color:var(--ink);
  border:2px solid var(--ink);box-shadow:3px 3px 0 var(--ink);
  font-size:.688rem;font-weight:900;letter-spacing:.14em;
}
.footer-col{display:flex;flex-direction:column;gap:.7rem}
.footer-col__title{
  padding-bottom:.5rem;
  border-bottom:2px solid rgba(255,249,238,.2);
  font-size:.75rem;font-weight:900;letter-spacing:.26em;color:var(--yellow);
}
.footer-col__list{display:flex;flex-direction:column;gap:.45rem}
.footer-col__list--plain{gap:.85rem}
.footer-col__list--plain li{font-size:.813rem;line-height:1.65;color:rgba(255,249,238,.82)}
.footer-link{
  display:inline-block;
  font-size:.875rem;color:rgba(255,249,238,.82);
  border-bottom:2px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{color:var(--neon);border-bottom-color:var(--neon)}
.footer-col__hint{font-size:.75rem;line-height:1.65;color:rgba(255,249,238,.55);max-width:30ch}
.footer-contact__key{display:block;margin-bottom:.12rem;font-size:.688rem;font-weight:700;letter-spacing:.2em;color:var(--clay)}
.footer-contact__val{font-family:var(--font-mono);font-size:.813rem;color:var(--mist);word-break:break-word}
.footer-contact__val--text{font-family:var(--font-sans);line-height:1.65;color:rgba(255,249,238,.82)}

@media(min-width:640px){
  .footer-main__inner{grid-template-columns:repeat(2,1fr)}
  .footer-brand{grid-column:1 / -1}
}
@media(min-width:1024px){
  .footer-main__inner{grid-template-columns:1.35fr 1fr 1fr 1.25fr 1fr}
  .footer-brand{grid-column:auto;border-bottom:0;border-right:var(--border) solid rgba(169,71,46,.6);padding-right:1.5rem;padding-bottom:0}
}

.footer-meta{background:var(--ink-deep);border-top:var(--border) solid var(--tu);padding-block:1rem}
.footer-meta__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.5rem 1.6rem;
  font-size:.75rem;letter-spacing:.08em;color:rgba(255,249,238,.62);
}
.footer-meta__icp{font-family:var(--font-mono);color:rgba(255,249,238,.78)}
.footer-meta__domain{font-family:var(--font-mono);color:var(--clay)}

@media(min-width:1180px){
  body{padding-left:var(--rail-w)}
  .brand-rail{display:flex}
}

@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;
  }
}