/* ========== 1. Reset ========== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{display:block;max-width:100%;}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
:target{scroll-margin-top:120px;}

/* ========== 2. Variables ========== */
:root{
  --night:#0A1F1A;
  --panel:#112C25;
  --panel-2:#0D2620;
  --cyan:#3FE8C0;
  --cyan-deep:#1B8F78;
  --orange:#FF8A3D;
  --violet:#7B7CF7;
  --ink:#E8F4EF;
  --muted:#93B2A8;
  --line:#1E4238;
  --white:#FFFFFF;
  --ink-soft:rgba(232,244,239,.82);
  --cyan-soft:rgba(63,232,192,.12);
  --cyan-line:rgba(63,232,192,.45);
  --violet-soft:rgba(123,124,247,.16);
  --orange-soft:rgba(255,138,61,.14);
  --radius-xl:30px;
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:10px;
  --pill:999px;
  --shell:1220px;
  --rail:264px;
  --gutter:clamp(16px,4vw,40px);
  --header-h:78px;
  --shadow-panel:0 18px 44px -28px rgba(0,0,0,.85);
  --font-display:"Archivo Narrow","Oswald","Arial Narrow","Helvetica Neue",-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ========== 3. Base typography ========== */
body{
  min-height:100vh;
  background-color:var(--night);
  background-image:
    radial-gradient(880px 520px at 84% -8%,rgba(63,232,192,.11),transparent 64%),
    radial-gradient(720px 480px at -10% 16%,rgba(123,124,247,.09),transparent 70%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.012em;
  overflow-x:hidden;
  word-break:break-word;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.14;letter-spacing:-.012em;text-wrap:balance;}
p{text-wrap:pretty;}
.display-title{font-size:clamp(36px,7vw,78px);line-height:1.02;letter-spacing:-.02em;color:var(--white);}
.section-title{font-size:clamp(24px,3.3vw,38px);color:var(--white);}
.lede{font-size:clamp(16px,1.4vw,18px);color:var(--ink-soft);max-width:62ch;}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.05em;}
.stat-big{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600;font-size:clamp(48px,9vw,104px);line-height:.92;letter-spacing:-.02em;color:var(--white);}
.stat-big--accent{color:var(--cyan);}
.stat-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);}

/* ========== 4. Layout helpers ========== */
.shell{width:min(100% - var(--gutter)*2,var(--shell));margin-inline:auto;}
.shell--narrow{width:min(100% - var(--gutter)*2,880px);margin-inline:auto;}
.section{padding-block:clamp(46px,6.5vw,92px);}
.section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:clamp(20px,3vw,36px);}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);}
.eyebrow::before{content:"";width:28px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent);}
.tick-line{height:1px;background:linear-gradient(90deg,var(--line),rgba(30,66,56,.25) 70%,transparent);border:0;margin-block:clamp(26px,4vw,52px);}
.tick-line--vertical{width:1px;height:100%;background:linear-gradient(180deg,var(--line),transparent);}
.rail-layout{display:grid;grid-template-columns:minmax(0,var(--rail)) minmax(0,1fr);gap:clamp(22px,3.6vw,60px);align-items:start;}
.rail-aside{position:sticky;top:calc(var(--header-h) + 18px);}
.rail-main{min-width:0;}
.rail-nav{display:flex;flex-direction:column;gap:4px;border-left:1px solid var(--line);}
.rail-nav__link{display:block;padding:8px 0 8px 16px;font-size:14px;color:var(--muted);border-left:2px solid transparent;margin-left:-1px;transition:color .25s ease,border-color .25s ease;}
.rail-nav__link:hover{color:var(--cyan);border-left-color:var(--cyan-line);}
.rail-nav__link:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.grid{display:grid;gap:clamp(16px,2.2vw,28px);}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));}
.grid--split{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));align-items:start;}
.stack{display:flex;flex-direction:column;gap:clamp(12px,1.8vw,22px);}

/* ========== 5. Buttons ========== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:var(--pill);
  font-size:14.5px;font-weight:600;line-height:1.2;white-space:nowrap;border:1px solid transparent;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;}
.btn--primary{background:var(--cyan);color:#04231C;}
.btn--primary:hover{background:var(--white);transform:translateY(-1px);}
.btn--ghost{border-color:var(--cyan-line);color:var(--cyan);background:transparent;}
.btn--ghost:hover{background:var(--cyan-soft);border-color:var(--cyan);}
.btn--quiet{border-color:var(--line);color:var(--ink);background:var(--panel);}
.btn--quiet:hover{border-color:var(--cyan-line);color:var(--cyan);}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}

/* ========== 6. Skip link ========== */
.skip-link{position:fixed;top:0;left:0;z-index:200;transform:translateY(-120%);
  background:var(--cyan);color:#04231C;font-weight:700;font-size:14px;padding:10px 18px;border-radius:0 0 14px 0;}
.skip-link:focus{transform:translateY(0);outline:2px solid var(--white);outline-offset:2px;}

/* ========== 7. Header ========== */
.site-header{position:sticky;top:0;z-index:90;background:rgba(10,31,26,.94);
  border-bottom:1px solid var(--line);backdrop-filter:blur(10px);}
.header-shell{width:min(100% - var(--gutter)*2,var(--shell));margin-inline:auto;
  display:grid;grid-template-columns:minmax(170px,252px) minmax(0,1fr) auto;align-items:center;
  gap:clamp(10px,1.8vw,26px);padding-block:13px;transition:padding .28s ease;}
.brand-rail{display:inline-flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{display:inline-flex;align-items:flex-end;gap:3px;width:34px;height:34px;padding:7px;flex:0 0 auto;
  border:1px solid var(--line);border-radius:11px;background:var(--panel);}
.brand-mark__bar{flex:1;border-radius:2px;background:var(--cyan-deep);}
.brand-mark__bar:nth-child(1){height:42%;}
.brand-mark__bar:nth-child(2){height:100%;background:var(--cyan);}
.brand-mark__bar:nth-child(3){height:66%;background:var(--orange);}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{font-family:var(--font-display);font-weight:800;font-size:19px;letter-spacing:.02em;color:var(--white);line-height:1.2;transition:font-size .28s ease;}
.brand-tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.brand-now{display:none;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--cyan);text-transform:uppercase;}
.site-nav{min-width:0;}
.site-nav__list{display:flex;align-items:center;gap:2px;flex-wrap:wrap;}
.site-nav__item{flex:0 0 auto;}
.site-nav__link{display:inline-flex;align-items:center;gap:7px;padding:8px 13px;border-radius:var(--pill);
  border:1px solid transparent;font-size:14.5px;color:var(--ink);white-space:nowrap;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease;}
.site-nav__index{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;color:var(--cyan-deep);}
.site-nav__link:hover{background:var(--panel);border-color:var(--line);color:var(--cyan);}
.site-nav__link:hover .site-nav__index{color:var(--cyan);}
.site-nav__link[aria-current="page"]{background:var(--cyan-soft);border-color:var(--cyan-line);color:var(--cyan);font-weight:600;}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--cyan);}
.site-nav__link:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.header-actions{display:flex;align-items:center;gap:10px;}
.header-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;}
.header-progress__bar{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan-deep),var(--cyan) 62%,var(--orange));}
.site-header.is-condensed .header-shell{padding-block:7px;}
.site-header.is-condensed .brand-name{font-size:16px;}
.site-header.is-condensed .brand-tag{display:none;}
.site-header.is-condensed .brand-now{display:block;}
.nav-toggle{display:none;align-items:center;gap:9px;padding:9px 14px;border:1px solid var(--line);
  border-radius:var(--pill);background:var(--panel);color:var(--ink);font-size:13.5px;cursor:pointer;}
.nav-toggle:hover{border-color:var(--cyan-line);color:var(--cyan);}
.nav-toggle:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:space-between;width:16px;height:12px;}
.nav-toggle__bars span{display:block;height:2px;border-radius:2px;background:var(--cyan);transition:transform .25s ease,opacity .25s ease;}
.site-header[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bars span:nth-child(2){opacity:0;}
.site-header[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
.nav-toggle__label{font-family:var(--font-mono);letter-spacing:.12em;}

/* ========== 8. Footer ========== */
.site-footer{background:var(--panel-2);border-top:1px solid var(--line);color:var(--muted);margin-top:clamp(48px,7vw,110px);}
.footer-shell{width:min(100% - var(--gutter)*2,var(--shell));margin-inline:auto;
  display:grid;grid-template-columns:1.5fr repeat(3,minmax(120px,1fr));gap:clamp(20px,3vw,48px);
  padding-block:clamp(32px,4.6vw,60px) clamp(22px,3vw,38px);}
.footer-brand__name{font-family:var(--font-display);font-weight:800;font-size:20px;color:var(--white);letter-spacing:.02em;}
.footer-brand__line{margin-top:8px;font-size:14.5px;color:var(--muted);max-width:26ch;line-height:1.6;}
.footer-brand__meta{margin-top:12px;display:inline-block;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--cyan);border:1px solid var(--cyan-line);border-radius:var(--pill);padding:4px 12px;}
.footer-col__title{font-family:var(--font-mono);font-size:11.5px;font-weight:500;letter-spacing:.22em;
  text-transform:uppercase;color:var(--muted);margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:9px;}
.footer-links__a{font-size:14.5px;color:var(--ink);transition:color .22s ease;}
.footer-links__a:hover{color:var(--cyan);}
.footer-links__a:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px;}
.footer-meta{border-top:1px solid var(--line);}
.footer-meta__inner{width:min(100% - var(--gutter)*2,var(--shell));margin-inline:auto;
  padding-block:22px 32px;display:flex;flex-wrap:wrap;gap:16px 34px;align-items:flex-start;justify-content:space-between;}
.footer-meta__list{display:flex;flex-wrap:wrap;gap:10px 30px;}
.footer-meta__item{display:inline-flex;flex-wrap:wrap;align-items:baseline;gap:8px;font-size:13.5px;}
.footer-meta__key{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan-deep);}
.footer-meta__val{color:var(--ink);font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.03em;}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:12.5px;color:var(--muted);}
.footer-legal__icp{font-family:var(--font-mono);letter-spacing:.06em;color:var(--muted);
  border:1px solid var(--line);border-radius:var(--pill);padding:4px 12px;}
.footer-legal__copy{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;}

/* ========== 9. Shared components ========== */
.breadcrumb{padding-block:18px 0;}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;font-family:var(--font-mono);letter-spacing:.06em;}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;color:var(--muted);}
.breadcrumb__link{color:var(--muted);transition:color .2s ease;}
.breadcrumb__link:hover{color:var(--cyan);}
.breadcrumb__link:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px;}
.breadcrumb__sep{color:var(--line);}

.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--pill);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;border:1px solid var(--line);
  background:var(--panel);color:var(--muted);white-space:nowrap;}
.pill--cyan{border-color:var(--cyan-line);color:var(--cyan);background:var(--cyan-soft);}
.pill--violet{border-color:rgba(123,124,247,.5);color:var(--violet);background:var(--violet-soft);}
.pill--orange{border-color:rgba(255,138,61,.5);color:var(--orange);background:var(--orange-soft);}
.pill--ghost{background:transparent;}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(18px,2.4vw,30px);box-shadow:var(--shadow-panel);}
.panel--accent{border-color:var(--cyan-line);background:linear-gradient(160deg,var(--panel),rgba(27,143,120,.14));}
.band{background:var(--panel-2);border-block:1px solid var(--line);}

.data-card{display:flex;flex-direction:column;gap:12px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:clamp(16px,2vw,26px);position:relative;overflow:hidden;
  transition:border-color .26s ease,transform .26s ease,background-color .26s ease;}
.data-card::after{content:"";position:absolute;left:0;top:0;width:3px;height:34px;background:var(--cyan-deep);transition:background-color .26s ease;}
.data-card:hover{border-color:var(--cyan-line);transform:translateY(-3px);}
.data-card:hover::after{background:var(--cyan);}
.data-card__head{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;justify-content:space-between;}
.data-card__title{font-family:var(--font-display);font-weight:800;font-size:19px;line-height:1.25;color:var(--white);}
.data-card__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(26px,3.4vw,40px);
  font-weight:600;color:var(--orange);line-height:1;}
.data-card__text{font-size:15px;color:var(--ink-soft);line-height:1.7;}
.data-card__tags{display:flex;flex-wrap:wrap;gap:8px;}
.data-card__foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}

.timeline{position:relative;padding-left:26px;display:flex;flex-direction:column;gap:clamp(16px,2.2vw,28px);}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,var(--cyan),var(--line) 60%,transparent);}
.timeline__item{position:relative;}
.timeline__dot{position:absolute;left:-26px;top:7px;width:15px;height:15px;border-radius:50%;
  background:var(--night);border:2px solid var(--line);transition:border-color .3s ease,background-color .3s ease;}
.timeline__item.is-in .timeline__dot,.timeline__item.is-active .timeline__dot{border-color:var(--cyan);background:var(--cyan);}
.timeline__time{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);}
.timeline__body{display:flex;flex-direction:column;gap:6px;margin-top:6px;}
.timeline__title{font-family:var(--font-display);font-weight:800;font-size:18px;color:var(--white);line-height:1.3;}
.timeline__text{font-size:14.8px;color:var(--ink-soft);line-height:1.7;}

.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-block:4px 18px;}
.filter-bar__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-right:4px;}
.filter-btn{padding:6px 14px;border-radius:var(--pill);border:1px solid var(--line);background:var(--panel);
  color:var(--muted);font-size:13px;cursor:pointer;transition:color .22s ease,border-color .22s ease,background-color .22s ease;}
.filter-btn:hover{color:var(--cyan);border-color:var(--cyan-line);}
.filter-btn.is-active{background:var(--violet-soft);border-color:rgba(123,124,247,.55);color:var(--violet);font-weight:600;}
.filter-btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.is-hidden{display:none !important;}

.figure-frame{position:relative;display:block;margin:0;overflow:hidden;border:1px solid var(--line);
  border-radius:var(--radius-lg);background:linear-gradient(160deg,var(--panel),var(--panel-2));}
.figure-frame > img{width:100%;height:100%;object-fit:cover;filter:saturate(.78) contrast(1.04);}
.figure-frame[data-ratio="16x9"]{aspect-ratio:16/9;}
.figure-frame[data-ratio="14x9"]{aspect-ratio:14/9;}
.figure-frame[data-ratio="12x7"]{aspect-ratio:12/7;}
.figure-frame[data-ratio="21x9"]{aspect-ratio:21/9;}
.figure-frame[data-ratio="3x2"]{aspect-ratio:3/2;}
.figure-frame[data-ratio="4x3"]{aspect-ratio:4/3;}
.figure-frame[data-ratio="5x4"]{aspect-ratio:5/4;}
.figure-frame[data-ratio="1x1"]{aspect-ratio:1/1;}
.figure-frame[data-ratio="3x4"]{aspect-ratio:3/4;}
.figure-frame[data-ratio="4x5"]{aspect-ratio:4/5;}
.figure-frame--slant{border-radius:var(--radius-xl);clip-path:polygon(0 0,100% 3.5%,100% 100%,0 96%);}
.figure-frame__tag{position:absolute;left:14px;top:14px;z-index:2;display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--pill);background:rgba(10,31,26,.82);border:1px solid var(--cyan-line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--cyan);}
.figure-frame__caption{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:22px 18px 14px;
  font-size:13px;color:var(--ink-soft);background:linear-gradient(180deg,transparent,rgba(10,31,26,.9));}

.float-bar{position:fixed;right:clamp(14px,3vw,34px);bottom:clamp(14px,3vw,30px);z-index:70;
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px;max-width:calc(100% - 28px);
  padding:10px 18px;border-radius:var(--pill);border:1px solid var(--line);background:rgba(17,44,37,.94);backdrop-filter:blur(8px);}
.float-bar__item{display:inline-flex;align-items:baseline;gap:7px;}
.float-bar__key{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);}
.float-bar__val{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:13px;color:var(--cyan);}

[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.72,.3,1);}
[data-reveal].is-in{opacity:1;transform:none;}

/* ========== 10. Responsive ========== */
@media (max-width:1080px){
  .header-shell{grid-template-columns:minmax(150px,1fr) auto auto;}
  .site-nav__link{padding:8px 10px;font-size:13.5px;}
  .site-nav__index{display:none;}
}
@media (max-width:1024px){
  .rail-layout{grid-template-columns:1fr;}
  .rail-aside{position:static;top:auto;}
}
@media (max-width:900px){
  :root{--header-h:66px;}
  .header-shell{grid-template-columns:minmax(0,1fr) auto auto;padding-block:10px;position:relative;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{padding:9px 14px;font-size:13px;}
  .site-nav{position:absolute;left:0;right:0;top:100%;display:none;background:var(--panel);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:12px var(--gutter) 20px;max-height:calc(100vh - var(--header-h));overflow-y:auto;}
  .site-header[data-open] .site-nav{display:block;}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:4px;}
  .site-nav__index{display:inline;}
  .site-nav__link{justify-content:space-between;padding:13px 16px;border-radius:var(--radius-sm);
    border-color:var(--line);background:var(--panel-2);font-size:15px;}
  .site-nav__link[aria-current="page"]{background:var(--cyan-soft);}
  .site-header.is-condensed .brand-now{display:none;}
  .site-header.is-condensed .brand-tag{display:block;}
  .footer-shell{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:560px){
  .footer-shell{grid-template-columns:1fr;gap:24px;}
  .footer-meta__inner{flex-direction:column;}
  .float-bar{left:14px;right:14px;justify-content:center;}
  .display-title{font-size:clamp(32px,10vw,46px);}
}

/* ========== 11. Accessibility / motion ========== */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
@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;}
  [data-reveal]{opacity:1;transform:none;}
}
@media print{
  .site-header,.site-footer,.float-bar{display:none;}
  body{background:var(--white);color:#111;}
}