*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:#05070F}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg{max-width:100%;display:block}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}
:focus-visible{outline:2px solid #00E5D0;outline-offset:3px}

:root{
  --ink-900:#05070F;
  --ink-800:#0B1224;
  --ink-700:#121B31;
  --line:#1E2A47;
  --line-soft:#2C3D63;
  --cyan:#00E5D0;
  --orange:#FF7A29;
  --violet:#A855F7;
  --white:#E9EEFA;
  --body-text:#C7D1E6;
  --muted:#93A0BC;
  --paper:#F5F7FC;
  --font-display:"Oswald","Archivo Narrow","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-h:68px;
  --rail-w:0px;
  --shell:1340px;
  --gap:clamp(16px,2.2vw,32px);
  --ease:cubic-bezier(.22,1,.36,1);
}
@media (min-width:1024px){:root{--rail-w:64px}}
@media (min-width:1280px){:root{--rail-w:268px}}

body{
  background:var(--ink-900);
  color:var(--body-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  min-height:100vh;
  padding-left:var(--rail-w);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--white);font-family:var(--font-display);font-weight:800;letter-spacing:-.02em;line-height:1.12}
h1{font-size:clamp(2.125rem,5vw,4.75rem)}
h2{font-size:clamp(1.6rem,3.2vw,2.6rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.5rem)}
p{line-height:1.75}
code,kbd,samp{font-family:var(--font-mono);font-size:.9em}

/* ============ shell ============ */
.ht-container{width:min(calc(100% - var(--gap)*2),var(--shell));margin-inline:auto}
.ht-section{position:relative;padding-block:clamp(44px,6.5vw,104px)}
.ht-section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:clamp(20px,3vw,40px)}
.ht-section__title{font-size:clamp(1.5rem,3vw,2.4rem)}
.ht-section__note{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--muted)}
.ht-rule{display:block;height:1px;border:0;margin:0;background:var(--line)}
.ht-rule--ticks{height:9px;border-top:1px solid var(--line);background:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 32px)}
.ht-eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan)}
.ht-eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);display:block}
.ht-eyebrow--vertical{writing-mode:vertical-rl;text-orientation:mixed;letter-spacing:.28em;padding-block:4px}
.ht-eyebrow--vertical::before{width:1px;height:22px}
.ht-prose{max-width:66ch;color:var(--body-text)}
.ht-prose p+p{margin-top:1em}
.ht-prose h2,.ht-prose h3{margin-top:1.6em;margin-bottom:.5em}
.ht-prose ul{list-style:none}
.ht-prose li{position:relative;padding-left:18px;margin-top:.5em}
.ht-prose li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:1px;background:var(--cyan)}

/* ============ grid & cards ============ */
.ht-grid{display:grid;gap:var(--gap);grid-template-columns:repeat(auto-fill,minmax(258px,1fr))}
.ht-grid--halves{grid-template-columns:repeat(auto-fill,minmax(340px,1fr))}
.ht-card{position:relative;display:flex;flex-direction:column;gap:12px;padding:clamp(16px,2vw,24px);background:var(--ink-700);border:1px solid var(--line);transition:border-color .26s var(--ease),background .26s var(--ease),transform .26s var(--ease)}
.ht-card:hover{border-color:var(--line-soft);background:#141F38}
.ht-card--spot{border-left:2px solid var(--cyan)}
.ht-card__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--muted)}
.ht-card__title{font-family:var(--font-display);font-weight:700;font-size:1.15rem;letter-spacing:-.01em;line-height:1.35}
.ht-card__text{font-size:15px;color:var(--muted)}
.ht-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border:1px solid var(--line);background:var(--ink-800);font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--muted)}
.ht-tag--cyan{color:var(--cyan);border-color:rgba(0,229,208,.35)}
.ht-tag--orange{color:var(--orange);border-color:rgba(255,122,41,.35)}
.ht-stat{display:flex;flex-direction:column;gap:6px}
.ht-stat__value{font-family:var(--font-mono);font-weight:700;font-size:clamp(2.4rem,6vw,4.2rem);line-height:.95;letter-spacing:-.03em;color:var(--cyan)}
.ht-stat__value--orange{color:var(--orange)}
.ht-stat__label{font-size:13px;color:var(--muted)}
.ht-index{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.ht-index__row{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:baseline;padding:12px 16px;background:var(--ink-800);transition:background .24s var(--ease)}
.ht-index__row:hover{background:var(--ink-700)}
.ht-index__key{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--cyan)}
.ht-index__name{color:var(--white)}
.ht-index__val{font-family:var(--font-mono);font-size:12px;color:var(--muted)}
.ht-table{border:1px solid var(--line);font-size:14px}
.ht-table th,.ht-table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line)}
.ht-table thead th{background:var(--ink-800);font-family:var(--font-mono);font-weight:500;font-size:12px;letter-spacing:.1em;color:var(--muted)}
.ht-table tbody tr:nth-child(even){background:var(--ink-700)}
.ht-table tbody tr:hover{background:#16223C}
.ht-table tbody tr:last-child td{border-bottom:0}

/* ============ buttons ============ */
.ht-btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;background:var(--ink-800);border:1px solid var(--line);color:var(--white);font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;transition:border-color .24s var(--ease),background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease)}
.ht-btn:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-1px)}
.ht-btn--primary{background:var(--cyan);border-color:var(--cyan);color:#04120F;font-weight:700}
.ht-btn--primary:hover{background:var(--orange);border-color:var(--orange);color:#1A0A00}
.ht-btn--ghost{background:transparent}
.ht-btn--ghost:hover{background:rgba(0,229,208,.08)}

/* ============ breadcrumb ============ */
.ht-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted)}
.ht-breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.ht-breadcrumb__link{color:var(--muted);transition:color .24s var(--ease)}
.ht-breadcrumb__link:hover{color:var(--cyan)}
.ht-breadcrumb__sep{color:var(--line-soft)}
.ht-breadcrumb [aria-current="page"]{color:var(--white)}

/* ============ filters ============ */
.ht-filters{display:flex;flex-wrap:wrap;gap:8px}
.ht-filter{padding:7px 14px;border:1px solid var(--line);background:transparent;color:var(--muted);font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease)}
.ht-filter:hover{color:var(--white);border-color:var(--line-soft)}
.ht-filter[aria-pressed="true"]{background:var(--cyan);border-color:var(--cyan);color:#04120F;font-weight:700}

/* ============ media ============ */
.ht-media{position:relative;display:block;overflow:hidden;background:linear-gradient(135deg,#121B31 0%,#0B1224 60%);border:1px solid var(--line)}
.ht-media::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(90deg,rgba(30,42,71,.75) 0 1px,transparent 1px 44px);opacity:.55;pointer-events:none}
.ht-media__img{position:relative;z-index:1;display:block;width:100%;height:100%;object-fit:cover}
.ht-media--21x9{aspect-ratio:21/9}
.ht-media--16x9{aspect-ratio:16/9}
.ht-media--4x3{aspect-ratio:4/3}
.ht-media--1x1{aspect-ratio:1/1}
.ht-media--tall{aspect-ratio:3/4}
.ht-media__cap{position:absolute;left:0;bottom:0;z-index:2;padding:6px 12px;background:rgba(5,7,15,.84);font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--muted)}

/* ============ reveal ============ */
.ht-reveal{opacity:0;transform:translateY(14px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.ht-reveal.is-visible{opacity:1;transform:none}

/* ============ skip link ============ */
.ht-skip{position:fixed;left:14px;top:-70px;z-index:120;padding:11px 18px;background:var(--cyan);color:#04120F;font-family:var(--font-mono);font-size:13px;font-weight:700;transition:top .2s var(--ease)}
.ht-skip:focus{top:14px}

/* ============ rail ============ */
.ht-rail{position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:40;display:none;flex-direction:column;background:var(--ink-800);border-right:1px solid var(--line);overflow:hidden}
@media (min-width:1024px){.ht-rail{display:flex}}
.ht-rail__head{flex:0 0 auto;display:flex;align-items:center;gap:8px;height:var(--header-h);padding:0 18px;border-bottom:1px solid var(--line)}
.ht-rail__title{font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:var(--muted);white-space:nowrap}
.ht-rail__code{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--cyan);white-space:nowrap}
.ht-rail__list{flex:1 1 auto;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding:14px 12px}
.ht-pin{display:flex;align-items:center;gap:10px;width:100%;padding:9px 10px;background:var(--ink-700);border:1px solid var(--line);color:var(--muted);font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-align:left;transition:border-color .24s var(--ease),background .24s var(--ease),color .24s var(--ease)}
.ht-pin:hover{border-color:var(--line-soft);color:var(--white)}
.ht-pin__abbr{flex:0 0 auto;font-weight:700;color:var(--cyan)}
.ht-pin__cn{font-family:var(--font-body);font-size:12px;letter-spacing:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ht-pin[aria-pressed="true"]{background:linear-gradient(135deg,rgba(168,85,247,.88),rgba(0,229,208,.3));border-color:transparent;color:var(--white)}
.ht-pin[aria-pressed="true"] .ht-pin__abbr{color:var(--white)}
.ht-rail__hint{flex:0 0 auto;padding:10px 14px;border-top:1px solid var(--line);font-size:11px;line-height:1.6;color:var(--muted)}
.ht-rail__cta{flex:0 0 auto;display:flex;align-items:center;justify-content:center;gap:8px;margin:12px;padding:12px 14px;background:var(--cyan);color:#04120F;font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.1em;transition:background .24s var(--ease),transform .24s var(--ease)}
.ht-rail__cta:hover{background:var(--orange);transform:translateY(-1px)}
.ht-rail__cta-mark{font-size:15px;line-height:1}
.ht-rail__cta-text{white-space:nowrap}
@media (min-width:1024px) and (max-width:1279px){
  .ht-rail__head{justify-content:center;padding:0}
  .ht-rail__head::before{content:"";display:block;width:10px;height:10px;background:var(--cyan)}
  .ht-rail__title,.ht-rail__code{display:none}
  .ht-rail__list{padding:12px 8px;align-items:center}
  .ht-pin{justify-content:center;padding:9px 0}
  .ht-pin__cn{display:none}
  .ht-rail__hint{display:none}
  .ht-rail__cta{margin:8px 6px;padding:10px 0}
  .ht-rail__cta-text{display:none}
}

/* ============ header ============ */
.ht-header{position:sticky;top:0;z-index:60;background:rgba(5,7,15,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.ht-header__bar{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:var(--gap);height:var(--header-h);padding:0 clamp(16px,3vw,40px)}
.ht-brand{display:inline-flex;align-items:center;gap:10px}
.ht-brand__glyph{display:grid;place-items:center;width:34px;height:34px;background:var(--cyan);color:#04120F;font-family:var(--font-display);font-weight:800;font-size:17px;line-height:1}
.ht-brand__text{display:flex;flex-direction:column;line-height:1.15}
.ht-brand__name{font-family:var(--font-display);font-weight:800;font-size:17px;letter-spacing:.02em;color:var(--white)}
.ht-brand__sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--muted)}
.ht-live{display:flex;align-items:center;gap:10px;justify-self:start;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted)}
.ht-live__dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 0 rgba(0,229,208,.55);animation:ht-pulse 2.4s var(--ease) infinite}
.ht-live__mono{color:var(--cyan)}
.ht-live__round{color:var(--muted)}
@keyframes ht-pulse{
  0%{box-shadow:0 0 0 0 rgba(0,229,208,.55)}
  70%{box-shadow:0 0 0 9px rgba(0,229,208,0)}
  100%{box-shadow:0 0 0 0 rgba(0,229,208,0)}
}
.ht-burger{display:none;align-items:center;gap:8px;padding:8px 12px;background:var(--ink-800);border:1px solid var(--line);color:var(--white);font-family:var(--font-mono);font-size:12px;letter-spacing:.1em}
.ht-burger:hover{border-color:var(--cyan);color:var(--cyan)}
.ht-burger__box{display:flex;flex-direction:column;justify-content:space-between;width:16px;height:12px}
.ht-burger__box span{display:block;height:1px;background:currentColor;transition:transform .26s var(--ease),opacity .2s var(--ease)}
.ht-header[data-open] .ht-burger__box span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.ht-header[data-open] .ht-burger__box span:nth-child(2){opacity:0}
.ht-header[data-open] .ht-burger__box span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
.ht-nav{justify-self:end}
.ht-nav__list{display:flex;align-items:center;gap:clamp(14px,1.7vw,30px)}
.ht-nav__link{position:relative;display:inline-block;padding:6px 2px;font-size:14px;letter-spacing:.06em;color:var(--body-text);transition:color .24s var(--ease)}
.ht-nav__link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--cyan);transform:scaleX(0);transform-origin:left center;transition:transform .28s var(--ease)}
.ht-nav__link:hover,.ht-nav__link:focus-visible{color:var(--white)}
.ht-nav__link:hover::after,.ht-nav__link:focus-visible::after{transform:scaleX(1)}
.ht-nav__link[aria-current="page"]{color:var(--cyan)}
.ht-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.ht-header__progress{position:absolute;left:0;bottom:-1px;width:100%;height:2px;transform:scaleX(0);transform-origin:left center;background:linear-gradient(90deg,var(--cyan),var(--orange));pointer-events:none}
@media (max-width:1023px){
  .ht-header__bar{grid-template-columns:1fr auto;gap:12px}
  .ht-live{display:none}
  .ht-burger{display:inline-flex;justify-self:end}
  .ht-nav{position:fixed;top:var(--header-h);left:0;right:0;bottom:0;z-index:55;justify-self:stretch;padding:clamp(16px,4vw,36px) clamp(16px,4vw,36px) 48px;background:var(--ink-900);border-top:1px solid var(--line);overflow-y:auto;opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s}
  .ht-header[data-open] .ht-nav{opacity:1;visibility:visible;transform:none}
  .ht-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .ht-nav__item{border-bottom:1px solid var(--line)}
  .ht-nav__link{display:block;padding:16px 4px;font-family:var(--font-display);font-size:1.15rem;letter-spacing:.02em}
  .ht-nav__link::after{display:none}
}

/* ============ footer ============ */
.ht-footer{margin-top:clamp(56px,8vw,120px);background:var(--ink-800);border-top:1px solid var(--line)}
.ht-footer__grid{display:grid;gap:clamp(24px,3vw,44px);width:min(calc(100% - var(--gap)*2),var(--shell));margin-inline:auto;padding-block:clamp(36px,5vw,72px);grid-template-columns:1fr}
@media (min-width:720px){.ht-footer__grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.ht-footer__grid{grid-template-columns:1.7fr 1fr 1fr 1.5fr}}
.ht-footer__col{min-width:0}
.ht-footer__brand{display:inline-block;font-family:var(--font-display);font-weight:800;font-size:1.25rem;letter-spacing:.01em;color:var(--white);transition:color .24s var(--ease)}
.ht-footer__brand:hover{color:var(--cyan)}
.ht-footer__lede{margin-top:10px;max-width:34ch;font-size:14px;color:var(--muted)}
.ht-footer__stamp{margin-top:14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--line-soft)}
.ht-footer__heading{margin-bottom:12px;font-family:var(--font-mono);font-weight:500;font-size:12px;letter-spacing:.18em;color:var(--cyan)}
.ht-footer__list{display:flex;flex-direction:column;gap:8px}
.ht-footer__link{position:relative;display:inline-block;font-size:14px;color:var(--body-text);transition:color .24s var(--ease),transform .24s var(--ease)}
.ht-footer__link::before{content:"";position:absolute;left:-14px;top:.72em;width:8px;height:1px;background:var(--cyan);opacity:0;transition:opacity .24s var(--ease)}
.ht-footer__link:hover{color:var(--cyan);transform:translateX(8px)}
.ht-footer__link:hover::before{opacity:1}
.ht-footer__meta{font-family:var(--font-mono);font-size:12px;line-height:1.7;letter-spacing:.04em;color:var(--muted);word-break:break-word}
.ht-footer__legal{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;width:min(calc(100% - var(--gap)*2),var(--shell));margin-inline:auto;padding-block:16px 24px;border-top:1px solid var(--line);font-family:var(--font-mono);font-size:11px;letter-spacing:.1em}
.ht-footer__icp{padding:3px 10px;background:var(--paper);color:var(--ink-900);letter-spacing:.08em}
.ht-footer__copy{color:var(--muted)}

/* ============ motion preferences ============ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .ht-reveal{opacity:1;transform:none}
}