:root{
  --ink-0:#061428;
  --ink-1:#0A2A34;
  --ink-2:#171238;
  --wine:#5C1730;
  --cyan:#35F1D0;
  --amber:#FF8A3D;
  --white:#F2F6FF;
  --steel:#8FA6C4;
  --mist:#E4E9F5;
  --teal-end:#0E6B62;
  --line:rgba(53,241,208,.22);
  --wrap:1280px;
  --gutter:clamp(18px,4vw,56px);
  --step:clamp(56px,7vw,96px);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --t-fast:.2s ease;
  --t-mid:.28s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--white);
  font:400 17px/1.8 var(--font-sans);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,address{margin:0}
h1,h2,h3,h4{font-weight:800;line-height:1.2;letter-spacing:-.01em}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--cyan);text-decoration:none}
a:hover{color:#7dfbe4}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:3px}
::selection{background:rgba(53,241,208,.3);color:var(--white)}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:300;
  background:var(--cyan);color:#04141a;
  padding:10px 18px;font-size:14px;font-weight:700;border-radius:0 0 8px 0;
}
.skip-link:focus{left:0;top:0;color:#04141a}

/* ---------- header : frame rail ---------- */
.nx-top{
  position:sticky;top:0;z-index:120;
  background:var(--ink-0);
  border-bottom:1px solid var(--line);
}
.nx-top__inner{
  width:100%;max-width:var(--wrap);margin:0 auto;
  padding:0 var(--gutter);
  min-height:64px;
  display:flex;align-items:center;
  gap:clamp(12px,2vw,32px);
}
.nx-brand{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;
  color:var(--white);font-weight:800;letter-spacing:.02em;
  transition:color var(--t-fast);
}
.nx-brand:hover{color:var(--white)}
.nx-brand__mark{
  width:31px;height:31px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--cyan),var(--teal-end));
  color:#04141a;font-size:16px;font-weight:800;
  border-radius:10px 3px 10px 3px;
}
.nx-brand__text{font-size:17px;white-space:nowrap}
.nx-brand__ver{
  font-size:11px;font-style:italic;font-weight:700;
  color:var(--amber);letter-spacing:.05em;
  border:1px solid rgba(255,138,61,.5);border-radius:999px;
  padding:1px 8px;line-height:1.5;
}
.nx-nav{flex:1 1 auto}
.nx-nav__list{display:flex;align-items:center;gap:clamp(8px,1.5vw,26px)}
.nx-nav__link{
  position:relative;display:block;
  padding:20px 2px;
  font-size:clamp(13px,1.12vw,15px);
  color:var(--steel);
  white-space:nowrap;
  transition:color var(--t-fast);
}
.nx-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left center;
  transition:transform var(--t-mid);
}
.nx-nav__link:hover{color:var(--white)}
.nx-nav__link:hover::after{transform:scaleX(1)}
.nx-nav__link[aria-current="page"]{color:var(--cyan)}
.nx-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.nx-nav__link[aria-current="page"]::before{
  content:"";position:absolute;left:50%;top:9px;
  width:5px;height:5px;margin-left:-2.5px;border-radius:50%;
  background:var(--amber);
}
.nx-top__tools{margin-left:auto;display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nx-tool{
  font-size:14px;color:var(--steel);padding:8px 10px;border-radius:6px;
  transition:color var(--t-fast),background var(--t-fast);
}
.nx-tool:hover{color:var(--cyan);background:rgba(53,241,208,.08)}
.nx-cta{
  display:inline-block;padding:9px 18px;border-radius:999px;
  background:linear-gradient(120deg,var(--amber),#ff6a1a);
  color:#1b0c02;font-size:14px;font-weight:700;letter-spacing:.02em;
  border:1px solid transparent;
  transition:box-shadow var(--t-fast),transform var(--t-fast);
}
.nx-cta:hover{color:#1b0c02;transform:translateY(-1px);box-shadow:0 0 0 3px rgba(255,138,61,.22)}
.nx-burger{
  display:none;width:44px;height:38px;padding:0;
  place-items:center;gap:4px;
  background:rgba(143,166,196,.08);
  border:1px solid var(--line);border-radius:9px;cursor:pointer;
  transition:background var(--t-fast);
}
.nx-burger:hover{background:rgba(53,241,208,.12)}
.nx-burger__bar{
  display:block;width:18px;height:2px;border-radius:2px;
  background:var(--cyan);
  transition:transform var(--t-mid),opacity var(--t-fast);
}
.nx-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgba(143,166,196,.16);
  overflow:hidden;
}
.nx-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--teal-end),var(--cyan));
  transition:width .12s linear;
}

/* ---------- layout primitives ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--step) 0;position:relative}
.section--teal{background:var(--ink-1)}
.section--indigo{background:var(--ink-2)}
.section--wine{background:var(--wine)}
.section--mist{background:var(--mist);color:#0B1B2B}
.section--mist .lede,
.section--mist .prose,
.section--mist .prose p{color:#1D3448}
.section--mist .side-note{color:#4A6480}
.section--mist .section-head__title{-webkit-text-stroke:0;text-shadow:none;color:#0B1B2B}

.section-head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 16px;
  margin-bottom:clamp(24px,4vw,44px);
}
.section-head__num{
  font-size:14px;font-weight:800;letter-spacing:.22em;
  color:var(--cyan);font-variant-numeric:tabular-nums;
}
.section-head__title{
  display:inline-block;margin:0;
  font-size:clamp(26px,3.6vw,44px);
  font-weight:800;letter-spacing:-.015em;
  transform:skewX(-2deg);transform-origin:left center;
  -webkit-text-stroke:.5px rgba(53,241,208,.55);
  text-shadow:0 0 18px rgba(53,241,208,.12);
  transition:text-shadow var(--t-mid),color var(--t-mid);
}
[data-spy].is-active .section-head__title{
  text-shadow:0 0 1px var(--amber),0 0 26px rgba(255,138,61,.35);
}
[data-spy].is-active .section-head__num{color:var(--amber)}
.section-head__num{transition:color var(--t-mid)}

.eyebrow{
  display:inline-block;margin-bottom:10px;
  font-size:12px;letter-spacing:.24em;color:var(--cyan);
}
.lede{
  max-width:38em;margin:0;
  font-size:clamp(17px,1.55vw,20px);line-height:1.85;
  color:var(--steel);
}
.prose{max-width:40em}
.prose p{margin:0 0 1.15em}
.prose p:last-child{margin-bottom:0}
.prose h3{font-size:20px;margin:1.9em 0 .6em}
.prose strong{color:var(--cyan);font-weight:700}
.side-note{
  writing-mode:vertical-rl;text-orientation:mixed;
  font-size:12px;line-height:1;letter-spacing:.18em;
  color:var(--steel);margin:0;
}
.split{
  display:grid;
  grid-template-columns:38fr 62fr;
  gap:clamp(24px,4vw,64px);
  align-items:start;
}
@media (min-width:1025px){
  .split__aside{position:sticky;top:88px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--t-fast),box-shadow var(--t-fast),background var(--t-fast),color var(--t-fast);
}
.btn--primary{background:linear-gradient(120deg,var(--amber),#ff6a1a);color:#1b0c02}
.btn--primary:hover{color:#1b0c02;transform:translateY(-2px);box-shadow:0 10px 26px rgba(255,138,61,.28)}
.btn--ghost{background:transparent;color:var(--cyan);border-color:rgba(53,241,208,.45)}
.btn--ghost:hover{color:var(--cyan);background:rgba(53,241,208,.1)}
.btn--quiet{background:rgba(143,166,196,.12);color:var(--white)}
.btn--quiet:hover{color:var(--white);background:rgba(143,166,196,.2)}

/* ---------- breadcrumbs ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--steel);padding:0;margin:0;
}
.crumbs a{color:var(--steel)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__item+.crumbs__item::before{
  content:"/";margin-right:8px;color:rgba(143,166,196,.5);
}

/* ---------- tags ---------- */
.tag{
  display:inline-block;font-size:12px;letter-spacing:.06em;
  padding:3px 10px;border-radius:999px;
  border:1px solid rgba(143,166,196,.4);color:var(--steel);
}
.tag--cyan{color:var(--cyan);border-color:rgba(53,241,208,.5);background:rgba(53,241,208,.08)}
.tag--amber{color:var(--amber);border-color:rgba(255,138,61,.5);background:rgba(255,138,61,.1)}
.tag--wine{color:#FFD9E4;border-color:rgba(255,120,160,.4);background:rgba(92,23,48,.65)}

/* ---------- numbers ---------- */
.data-num{
  display:block;font-weight:800;
  font-size:clamp(36px,5vw,48px);line-height:1;
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.data-num--sm{font-size:28px}

/* ---------- media frames ---------- */
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/10;width:100%;
  border-radius:18px 4px 18px 4px;
  border:1px solid rgba(53,241,208,.16);
  background:linear-gradient(150deg,var(--ink-1),var(--ink-2));
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:22px 16px 10px;
  font-size:12px;line-height:1.5;color:var(--mist);
  background:linear-gradient(0deg,rgba(6,20,40,.94),rgba(6,20,40,0));
}

/* ---------- reveal ---------- */
html.reveal-ready [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .5s ease,transform .5s ease;
}
html.reveal-ready [data-reveal].is-in{opacity:1;transform:none}

/* ---------- footer ---------- */
.nx-foot{
  position:relative;overflow:hidden;
  background:var(--ink-1);
  border-top:1px solid var(--line);
  margin-top:var(--step);
}
.nx-foot::after{
  content:"3.2";
  position:absolute;right:-.06em;bottom:-.30em;
  font-size:clamp(140px,20vw,300px);font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(53,241,208,.07);
  pointer-events:none;user-select:none;
}
.nx-foot__inner{
  position:relative;z-index:1;
  width:100%;max-width:var(--wrap);margin:0 auto;
  padding:clamp(48px,6vw,84px) var(--gutter) 28px;
}
.nx-foot__grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:clamp(24px,3.4vw,56px);
}
.nx-foot__col{min-width:0}
.nx-foot__claim{
  font-size:clamp(22px,2.3vw,30px);font-weight:800;line-height:1.35;
  margin:0 0 14px;letter-spacing:.01em;
}
.nx-foot__claim em{font-style:normal;color:var(--cyan)}
.nx-foot__meta{font-size:14px;line-height:1.75;color:var(--steel)}
.nx-foot__title{
  font-size:13px;font-weight:700;letter-spacing:.18em;
  color:var(--cyan);margin:0 0 16px;
}
.nx-foot__list{display:grid;gap:9px}
.nx-foot__link{
  display:inline-block;font-size:14px;color:var(--steel);
  transition:color var(--t-fast),transform var(--t-fast);
}
.nx-foot__link:hover{color:var(--white);transform:translateX(3px)}
.nx-foot__addr{
  font-style:normal;font-size:14px;line-height:1.95;color:var(--steel);
  word-break:break-word;
}
.nx-legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;
  margin-top:clamp(32px,4.5vw,56px);padding-top:18px;
  border-top:1px solid rgba(143,166,196,.16);
  font-size:13px;color:var(--steel);
}
.nx-legal a{color:var(--steel);transition:color var(--t-fast)}
.nx-legal a:hover{color:var(--cyan)}
.nx-legal__icp{font-variant-numeric:tabular-nums}
.nx-legal__spacer{flex:1 1 auto;min-width:0}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nx-tool{display:none}
}
@media (max-width:1024px){
  .nx-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;
    background:var(--ink-1);
    border-bottom:1px solid var(--line);
    padding:6px var(--gutter) 18px;
    max-height:calc(100vh - 64px);
    overflow-y:auto;
  }
  .nx-nav[data-open]{display:block}
  .nx-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nx-nav__link{
    padding:15px 2px;font-size:16px;
    border-bottom:1px solid rgba(143,166,196,.12);
  }
  .nx-nav__link::after{display:none}
  .nx-nav__link[aria-current="page"]::before{
    left:auto;right:6px;top:50%;margin:-3px 0 0;
  }
  .nx-burger{display:grid}
  .nx-top__inner{min-height:60px}
  .split{grid-template-columns:1fr;gap:clamp(20px,5vw,40px)}
  .nx-foot__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  body{font-size:16px}
  .nx-brand__text{font-size:15px}
  .nx-cta{padding:8px 14px;font-size:13px}
  .nx-foot__grid{grid-template-columns:1fr;gap:34px}
  .nx-legal{font-size:12px}
  .nx-foot::after{font-size:120px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html{scroll-behavior:auto}
}