/* ========== 1. reset ========== */
*,*::before,*::after{box-sizing:border-box}
html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  background:
    radial-gradient(78% 52% at 86% -10%, rgba(227,174,75,.14), transparent 62%),
    radial-gradient(62% 46% at 2% 1%, rgba(28,98,143,.30), transparent 68%),
    radial-gradient(96% 62% at 50% 110%, rgba(28,98,143,.22), transparent 72%),
    #05192A;
}
body{
  margin:0;
  min-height:100vh;
  background-color:transparent;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,picture,svg,video{display:block;max-width:100%}
img{height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
strong,b{font-weight:700}
hr{border:0;border-top:1px solid var(--line);margin:0}
::selection{background:var(--gold-500);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--gold-200);outline-offset:3px}

/* ========== 2. tokens ========== */
:root{
  --ink-900:#05192A;
  --ink-800:#0A2740;
  --ink-700:#10395A;
  --ink-500:#1C628F;
  --gold-500:#E3AE4B;
  --gold-200:#F6DFA6;
  --coral-500:#FF6F4A;
  --paper:#EEF3F8;
  --mute:#93A8BC;
  --tide:#2E9E86;
  --tide-text:#7FD4C0;
  --amber:#C9862F;
  --amber-text:#E9B96A;
  --grad-band:linear-gradient(135deg,#0A2740 0%,#05192A 100%);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"Roboto Mono","JetBrains Mono",ui-monospace,monospace;
  --shell:1240px;
  --gutter:clamp(16px,4vw,40px);
  --gap:clamp(16px,2.4vw,32px);
  --radius:2px;
  --dur:300ms;
  --ease:cubic-bezier(.2,.7,.2,1);
  --line:rgba(28,98,143,.5);
  --line-soft:rgba(28,98,143,.28);
}

/* ========== 3. typography ========== */
h1,h2,h3{font-family:var(--font-display);font-weight:600;line-height:1.14;letter-spacing:-.01em}
h1{font-size:clamp(30px,5vw,64px)}
h2{font-size:clamp(24px,3.4vw,44px)}
h3{font-size:clamp(19px,2.2vw,26px)}
h4{font-family:var(--font-sans);font-size:17px;font-weight:600;line-height:1.5}
p{max-width:40em}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ========== 4. layout ========== */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.shell--narrow{max-width:860px}
.grid{display:grid;gap:var(--gap)}
.grid--aside{grid-template-columns:minmax(0,3fr) minmax(0,9fr)}
.grid--split{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.grid--cards{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}

/* ========== 5. section heads ========== */
.section{padding-block:clamp(44px,6.5vw,96px)}
.section--band{background:linear-gradient(180deg,rgba(10,39,64,.92),rgba(5,25,42,.6));border-block:1px solid var(--line-soft)}
.section__head{display:grid;gap:10px;max-width:46rem;margin-bottom:clamp(20px,3vw,36px)}
.section__num{
  display:inline-flex;align-items:center;gap:12px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.22em;color:var(--gold-500);font-variant-numeric:tabular-nums;
}
.section__num::after{content:"";display:block;width:56px;height:1px;background:linear-gradient(90deg,var(--gold-500),transparent)}
.section__title{font-family:var(--font-display);font-size:clamp(26px,3.4vw,44px);font-weight:600;line-height:1.14;letter-spacing:-.01em}
.section__lead{font-size:16px;line-height:1.85;color:var(--mute);max-width:36em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--gold-500);
}

/* ========== 6. buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  min-height:44px;padding:0 20px;
  font-family:var(--font-sans);font-size:14px;font-weight:600;line-height:1.2;letter-spacing:.02em;
  color:var(--paper);background:transparent;
  border:1px solid transparent;border-radius:var(--radius);
  cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn--primary{background:var(--coral-500);border-color:var(--coral-500);color:#08192A}
.btn--primary:hover{background:#FF8563;border-color:#FF8563}
.btn--ghost{border-color:rgba(28,98,143,.75);color:var(--gold-200)}
.btn--ghost:hover{border-color:var(--gold-500);background:rgba(227,174,75,.10);color:var(--gold-200)}
.btn--compact{min-height:38px;padding:0 14px;font-size:13px}
.btn:focus-visible{outline:2px solid var(--gold-200);outline-offset:3px}

/* ========== 7. skip link ========== */
.skip-link{
  position:absolute;left:12px;top:8px;z-index:200;
  padding:10px 18px;
  background:var(--gold-500);color:#05192A;
  font-size:14px;font-weight:700;
  border-radius:var(--radius);
  transform:translateY(-180%);
  transition:transform 180ms var(--ease);
}
.skip-link:focus-visible{transform:translateY(0);outline:2px solid var(--gold-200);outline-offset:3px}

/* ========== 8. header ========== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:linear-gradient(180deg,rgba(5,25,42,.99),rgba(6,28,45,.94));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(227,174,75,.5),transparent);
  pointer-events:none;
}
.site-header__progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;z-index:2;
  background:linear-gradient(90deg,var(--gold-500),var(--coral-500));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform 120ms linear;
  pointer-events:none;
}
.site-header__inner{
  display:flex;align-items:center;gap:clamp(12px,2vw,24px);
  min-height:72px;padding-block:10px;
}
.brand{display:flex;align-items:center;gap:10px;min-height:44px;flex:0 0 auto}
.brand__mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:38px;height:38px;
  border:1px solid rgba(227,174,75,.55);border-radius:var(--radius);
  background:linear-gradient(150deg,rgba(227,174,75,.22),rgba(28,98,143,.16));
  box-shadow:inset 0 0 0 1px rgba(5,25,42,.65);
  color:var(--gold-200);
  font-family:var(--font-display);font-size:20px;font-weight:600;line-height:1;
}
.brand__text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand__name{font-family:var(--font-display);font-size:17px;font-weight:600;color:var(--paper);letter-spacing:.02em}
.brand__note{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;color:var(--mute)}
.site-header__status{
  display:flex;align-items:center;gap:8px;flex:0 1 auto;
  max-width:200px;
  font-size:12px;line-height:1.4;color:var(--mute);
}
.status-dot{
  flex:0 0 auto;width:6px;height:6px;background:var(--tide);
  box-shadow:0 0 0 3px rgba(46,158,134,.18);
}
.site-nav{display:flex;align-items:center;justify-content:center;flex:1 1 auto;min-width:0}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__item{display:block}
.nav__link{
  display:inline-flex;align-items:center;gap:6px;
  min-height:44px;padding:0 10px;
  font-size:14px;font-weight:500;line-height:1.2;white-space:nowrap;
  color:rgba(238,243,248,.82);
  border-bottom:2px solid transparent;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav__link:hover{color:var(--gold-200);background:rgba(28,98,143,.22)}
.nav__index{
  font-family:var(--font-mono);font-size:10.5px;font-variant-numeric:tabular-nums;
  letter-spacing:.04em;color:var(--ink-500);
  transition:color var(--dur) var(--ease);
}
.nav__link:hover .nav__index{color:var(--gold-200)}
.nav__link[aria-current="page"]{color:var(--gold-200);border-bottom-color:var(--gold-500)}
.nav__link[aria-current="page"] .nav__index{color:var(--gold-500)}
.site-nav__foot{display:none}
.site-header__actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex:0 0 auto}
.nav-toggle{
  display:none;align-items:center;gap:9px;
  min-height:44px;min-width:44px;padding:0 12px;
  border:1px solid rgba(28,98,143,.75);border-radius:var(--radius);
  color:var(--paper);cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--gold-500);color:var(--gold-200)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:2px;background:currentColor}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;
  transition:transform var(--dur) var(--ease),top var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:0;transform:rotate(-45deg)}
.nav-toggle__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em}

/* ========== 9. footer ========== */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,112px);
  background:linear-gradient(160deg,#0A2740 0%,#05192A 70%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--gold-500),rgba(227,174,75,0) 46%,var(--coral-500));
}
.footer__grid{
  display:grid;
  grid-template-columns:1.5fr .8fr .8fr .9fr 1.2fr;
  gap:clamp(20px,3vw,40px);
  padding-block:clamp(36px,5.5vw,72px);
}
.footer__brand{min-width:0}
.brand--footer .brand__name{font-size:19px}
.brand--footer .brand__mark{width:40px;height:40px;font-size:21px}
.footer__tagline{margin-top:14px;font-size:14px;line-height:1.8;color:var(--mute);max-width:24em}
.footer__meta{
  margin-top:12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--gold-500);
}
.footer__col{min-width:0}
.footer__title{
  font-family:var(--font-sans);font-size:12px;font-weight:700;line-height:1.4;
  letter-spacing:.16em;text-transform:uppercase;color:var(--gold-500);
  padding-bottom:10px;margin-bottom:10px;
  border-bottom:1px solid var(--line);
}
.footer__list{display:grid;gap:2px}
.footer__link{
  display:inline-flex;align-items:center;
  min-height:36px;
  font-size:14px;color:rgba(238,243,248,.82);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer__link:hover{color:var(--gold-200);border-bottom-color:rgba(227,174,75,.6)}
.footer__contact{min-width:0}
.footer__contact-item{display:grid;gap:2px;padding-block:6px}
.footer__contact-label{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;
  color:var(--ink-500);text-transform:uppercase;
}
.footer__contact-value{font-size:13.5px;line-height:1.7;color:var(--mute);word-break:break-word}
.footer__bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:8px 24px;
  padding-block:14px 24px;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;color:var(--mute);
}
.footer__legal{font-family:var(--font-mono);font-size:12px;letter-spacing:.03em}
.footer__legal-links{display:flex;flex-wrap:wrap;gap:4px 18px}
.footer__legal-links .footer__link{min-height:44px;font-size:12.5px;color:var(--mute)}
.footer__legal-links .footer__link:hover{color:var(--gold-200)}
.footer__icp{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--mute)}

/* ========== 10. breadcrumb ========== */
.breadcrumb{padding-block:18px}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;color:var(--mute)}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--ink-500)}
.breadcrumb__link{display:inline-flex;align-items:center;min-height:24px;color:var(--mute)}
.breadcrumb__link:hover{color:var(--gold-200)}
.breadcrumb__current{color:var(--paper)}

/* ========== 11. prose ========== */
.prose{max-width:38em;font-size:16.5px;line-height:1.95;color:rgba(238,243,248,.9)}
.prose > * + *{margin-top:1.1em}
.prose h3{margin-top:1.9em;font-family:var(--font-display);font-size:22px;line-height:1.35}
.prose a{color:var(--gold-200);border-bottom:1px solid rgba(227,174,75,.55)}
.prose a:hover{border-bottom-color:var(--gold-200)}
.prose ul{display:grid;gap:.5em;padding-left:1.1em;list-style:square;color:rgba(238,243,248,.9)}
.prose blockquote{
  padding:14px 18px;border-left:2px solid var(--gold-500);
  background:rgba(16,57,90,.45);color:var(--gold-200);
}

/* ========== 12. tags & status ========== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(16,57,90,.5);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--mute);
}
.status{
  display:inline-flex;align-items:center;gap:7px;
  padding:3px 10px;border:1px solid currentColor;border-radius:var(--radius);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--mute);background:rgba(16,57,90,.4);
}
.status--done{color:var(--tide-text);border-color:rgba(46,158,134,.65);background:rgba(46,158,134,.14)}
.status--soon{color:var(--amber-text);border-color:rgba(201,134,47,.65);background:rgba(201,134,47,.14)}

/* ========== 13. media containers ========== */
.media{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--line);border-radius:var(--radius);
  background-color:var(--ink-800);
  background-image:
    repeating-linear-gradient(90deg,rgba(28,98,143,.16) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(0deg,rgba(28,98,143,.12) 0 1px,transparent 1px 48px),
    linear-gradient(135deg,#0A2740 0%,#10395A 55%,#05192A 100%);
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(70% 60% at 80% 0%, rgba(227,174,75,.18), transparent 60%),
    linear-gradient(200deg,rgba(5,25,42,0) 30%,rgba(5,25,42,.55) 100%);
}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media__img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media__caption{
  position:absolute;left:0;bottom:0;z-index:2;
  padding:7px 12px;
  background:rgba(5,25,42,.8);
  border-top:1px solid rgba(227,174,75,.35);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--gold-200);
}

/* ========== 14. accordion ========== */
.accordion{border-top:1px solid var(--line)}
.accordion__item{border-bottom:1px solid var(--line)}
.accordion__trigger{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;min-height:56px;padding:14px 2px;
  text-align:left;
  font-family:var(--font-sans);font-size:16px;font-weight:600;line-height:1.5;color:var(--paper);
  cursor:pointer;
  transition:color var(--dur) var(--ease);
}
.accordion__trigger:hover{color:var(--gold-200)}
.accordion__trigger[aria-expanded="true"]{color:var(--gold-200)}
.accordion__icon{
  position:relative;flex:0 0 auto;width:14px;height:14px;
  color:var(--gold-500);
}
.accordion__icon::before,
.accordion__icon::after{
  content:"";position:absolute;left:0;top:6px;width:14px;height:1px;background:currentColor;
  transition:transform var(--dur) var(--ease);
}
.accordion__icon::after{transform:rotate(90deg)}
.accordion__trigger[aria-expanded="true"] .accordion__icon::after{transform:rotate(0deg)}
.accordion__panel{padding:0 2px 20px;font-size:15.5px;line-height:1.9;color:var(--mute);max-width:38em}
.accordion__panel[hidden]{display:none}

/* ========== 15. reveal ========== */
html.js [data-reveal]{opacity:0;transform:translateY(16px)}
html.js [data-reveal="in"]{
  opacity:1;transform:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}

/* ========== 16. responsive ========== */
@media (max-width:1180px){
  .site-header__status{display:none}
  .nav__link{padding:0 8px;font-size:13.5px}
}
@media (max-width:1023px){
  .site-header__inner{min-height:64px;gap:12px}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    display:block;
    padding:14px var(--gutter) 22px;
    max-height:calc(100vh - 64px);
    overflow-y:auto;
    background:linear-gradient(180deg,#0A2740 0%,#05192A 100%);
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 44px rgba(2,10,18,.6);
    opacity:0;visibility:hidden;transform:translateY(-10px);pointer-events:none;
    transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms var(--ease);
  }
  .site-nav[data-open]{
    opacity:1;visibility:visible;transform:none;pointer-events:auto;
  }
  .nav__list{display:grid;gap:0}
  .nav__link{
    display:flex;align-items:center;justify-content:space-between;
    width:100%;min-height:52px;padding:12px 4px;
    font-size:15.5px;
    border-bottom:1px solid var(--line-soft);
  }
  .nav__link[aria-current="page"]{
    border-bottom-color:var(--line-soft);
    background:rgba(227,174,75,.08);
    box-shadow:inset 2px 0 0 var(--gold-500);
    padding-left:12px;
  }
  .nav__index{font-size:11px;color:var(--mute);order:2}
  .site-nav__foot{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
  .site-nav__foot .btn{flex:1 1 160px}
  .nav-toggle{display:inline-flex}
  .site-header__actions .btn--ghost{display:none}
  .btn--compact{min-height:44px;padding:0 16px;font-size:13.5px}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__brand{grid-column:1 / -1}
  .grid--aside,.grid--split{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .brand__mark{width:34px;height:34px;font-size:18px}
  .brand__name{font-size:15.5px}
  .brand__note{font-size:9.5px;letter-spacing:.06em}
  .footer__grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .footer__bar{justify-content:flex-start;gap:6px 16px}
  .footer__legal-links{width:100%}
  .responsive-note{display:none}
  .section{padding-block:clamp(36px,8vw,56px)}
  .media--wide{aspect-ratio:16/9}
}

/* ========== 17. reduced motion ========== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  .site-header__progress{transition:none}
}