*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,p,figure,blockquote,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}

:root{
  --ink-900:#061826;
  --ink-800:#0B2239;
  --ink-700:#102C46;
  --cyan-500:#35E0D0;
  --cyan-300:#7CF5E8;
  --orange-500:#FF7A3D;
  --orange-300:#FFA26B;
  --paper:#F4E9D8;
  --fog:#EAF7F5;
  --mist:#8FB3C4;
  --ink-black:#050B10;

  --line-soft:rgba(53,224,208,.16);
  --line-strong:rgba(53,224,208,.46);
  --surface-1:rgba(16,44,70,.72);
  --surface-2:rgba(11,34,57,.92);

  --r-lg:26px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;

  --font-sans:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;

  --wrap:1180px;
  --gutter:clamp(16px,4vw,40px);
  --shadow-soft:0 20px 48px -26px rgba(5,11,16,.95);
}

html{background-color:var(--ink-900)}
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--fog);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(900px 520px at 10% -10%,rgba(53,224,208,.16),transparent 62%),
    radial-gradient(760px 480px at 96% 6%,rgba(255,122,61,.12),transparent 60%),
    radial-gradient(680px 520px at 50% 120%,rgba(53,224,208,.08),transparent 65%),
    linear-gradient(180deg,#061826 0%,#0B2239 46%,#061826 100%);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

main,#main-content{scroll-margin-top:96px}

:focus-visible{outline:2px solid var(--cyan-300);outline-offset:3px;border-radius:8px}

/* ---------- header ---------- */
.spk-skip{
  position:fixed;top:0;left:50%;transform:translate(-50%,-140%);
  z-index:200;display:inline-block;padding:10px 20px;
  border-radius:0 0 var(--r-md) var(--r-md);
  background:var(--cyan-500);color:#04141C;font-weight:700;font-size:14px;
  transition:transform .2s ease;
}
.spk-skip:focus{transform:translate(-50%,0)}

.spk-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(6,24,38,.94),rgba(6,24,38,.78));
  border-bottom:1px solid var(--line-soft);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.spk-header__inner{
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:10px var(--gutter);
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
}

.spk-brand{display:inline-flex;align-items:center;gap:11px;min-width:0;flex:none}
.spk-brand__mark{
  display:grid;place-items:center;width:38px;height:38px;flex:none;
  border-radius:13px;
  background:linear-gradient(145deg,var(--cyan-500),var(--cyan-300) 46%,var(--orange-500));
  color:#04141C;font-family:var(--font-mono);font-weight:700;font-size:18px;
  box-shadow:0 10px 24px -14px rgba(53,224,208,.95);
}
.spk-brand__text{display:flex;flex-direction:column;min-width:0;line-height:1.15}
.spk-brand__name{font-size:16.5px;font-weight:800;letter-spacing:-.01em;color:var(--fog);white-space:nowrap}
.spk-brand__tag{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.06em;color:var(--mist);white-space:nowrap}

.spk-panel{display:flex;align-items:center;gap:14px;margin-left:auto;min-width:0}

.spk-nav{min-width:0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.spk-nav::-webkit-scrollbar{display:none}
.spk-nav__list{display:flex;align-items:center;gap:4px}
.spk-nav__item{display:flex}
.spk-nav__link{
  display:inline-block;padding:8px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--mist);white-space:nowrap;
  border:1px solid transparent;
  transition:color .18s ease,background-color .18s ease,border-color .18s ease;
}
.spk-nav__link:hover{color:var(--fog);background:rgba(53,224,208,.1)}
.spk-nav__link[aria-current="page"]{
  color:var(--cyan-300);border-color:var(--line-strong);
  background:rgba(53,224,208,.12);
  box-shadow:inset 0 0 18px -8px rgba(53,224,208,.9);
}

.spk-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 18px;border-radius:var(--r-pill);
  background:var(--orange-500);color:#1B0700;
  font-weight:700;font-size:14.5px;white-space:nowrap;
  box-shadow:0 14px 28px -18px rgba(255,122,61,.95);
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.spk-cta:hover{background:var(--orange-300);transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(255,162,107,.95)}

.spk-burger{
  display:none;align-items:center;justify-content:center;flex:none;
  width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line-soft);background:rgba(16,44,70,.72);color:var(--fog);
  transition:border-color .18s ease,background-color .18s ease;
}
.spk-burger:hover{border-color:var(--line-strong)}
.spk-burger__bars{display:flex;flex-direction:column;gap:4px;width:18px}
.spk-burger__bars span{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .22s ease,opacity .16s ease}
.spk-header[data-open] .spk-burger{border-color:var(--line-strong);color:var(--cyan-300)}
.spk-header[data-open] .spk-burger__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.spk-header[data-open] .spk-burger__bars span:nth-child(2){opacity:0}
.spk-header[data-open] .spk-burger__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.spk-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(53,224,208,.12);overflow:hidden}
.spk-progress__bar{
  display:block;width:100%;height:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan-500),var(--cyan-300) 55%,var(--orange-500));
  transition:transform .12s linear;
}

html.spk-nav-lock,html.spk-nav-lock body{overflow:hidden}

@media (max-width:919px){
  .spk-burger{display:inline-flex}
  .spk-brand__tag{display:none}
  .spk-panel{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:14px;
    padding:16px var(--gutter) 22px;
    margin-left:0;
    background:linear-gradient(180deg,rgba(11,34,57,.99),rgba(6,24,38,.99));
    border-bottom:1px solid var(--line-soft);
    box-shadow:var(--shadow-soft);
    max-height:calc(100dvh - 68px);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .spk-header[data-open] .spk-panel{opacity:1;visibility:visible;transform:none}
  .spk-nav{overflow:visible}
  .spk-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .spk-nav__link{display:block;padding:12px 14px;border-radius:14px;font-size:16px}
  .spk-cta{width:100%;padding:14px 20px;font-size:15px}
}

@media (max-width:420px){
  .spk-brand__mark{width:34px;height:34px;border-radius:11px;font-size:16px}
  .spk-brand__name{font-size:15px}
}

/* ---------- footer ---------- */
.spk-footer{
  position:relative;margin-top:clamp(48px,8vw,96px);
  background:linear-gradient(180deg,rgba(11,34,57,0) 0%,rgba(11,34,57,.96) 18%,#0B2239 100%);
  border-top:1px solid var(--line-soft);
}
.spk-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan-500),var(--orange-500),transparent);
  opacity:.6;
}
.spk-footer__inner{
  max-width:var(--wrap);margin-inline:auto;
  padding:clamp(36px,5vw,64px) var(--gutter) clamp(84px,12vw,60px);
}
.spk-footer__grid{
  display:grid;
  grid-template-columns:minmax(0,1.7fr) minmax(0,1fr) minmax(0,1fr);
  gap:clamp(24px,4vw,48px);
}
.spk-footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:14px;min-width:0}
.spk-footer__name{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--fog)}
.spk-footer__desc{max-width:36ch;font-size:14.5px;line-height:1.75;color:var(--mist)}
.spk-footer__col{min-width:0}
.spk-footer__title{
  margin-bottom:14px;font-family:var(--font-mono);font-size:11.5px;
  letter-spacing:.2em;text-transform:uppercase;color:var(--cyan-300);
}
.spk-footer__list{display:grid;gap:9px}
.spk-footer__link{
  display:inline-block;font-size:14.5px;color:var(--mist);
  transition:color .18s ease,transform .18s ease;
}
.spk-footer__link:hover{color:var(--cyan-300);transform:translateX(2px)}

.spk-footer__contact{
  margin-top:clamp(26px,4vw,42px);
  padding-top:clamp(18px,3vw,26px);
  border-top:1px dashed rgba(53,224,208,.24);
  display:grid;gap:6px;
}
.spk-footer__line{font-family:var(--font-mono);font-size:12.5px;line-height:1.7;color:var(--mist)}

.spk-footer__meta{
  margin-top:clamp(18px,3vw,26px);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 22px;
}
.spk-footer__legal{display:flex;flex-wrap:wrap;gap:8px 18px}
.spk-footer__legalLink{
  font-size:13px;color:var(--cyan-300);
  border-bottom:1px solid transparent;transition:border-color .18s ease,color .18s ease;
}
.spk-footer__legalLink:hover{color:var(--cyan-500);border-bottom-color:currentColor}
.spk-footer__icp,.spk-footer__copy{font-family:var(--font-mono);font-size:12px;color:rgba(143,179,196,.85)}
.spk-footer__top{
  font-family:var(--font-mono);font-size:12px;color:var(--mist);
  padding:6px 14px;border-radius:var(--r-pill);border:1px solid var(--line-soft);
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.spk-footer__top:hover{color:var(--cyan-300);border-color:var(--line-strong);background:rgba(53,224,208,.08)}

.spk-float{
  position:fixed;right:clamp(14px,3vw,26px);bottom:clamp(14px,3vw,26px);z-index:50;
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 20px;border-radius:var(--r-pill);
  background:var(--orange-500);color:#1B0700;font-weight:700;font-size:14px;
  box-shadow:0 16px 34px -14px rgba(255,122,61,.85);
  animation:spk-breathe 4.6s ease-in-out infinite;
  transition:background-color .18s ease,transform .18s ease;
}
.spk-float:hover{background:var(--orange-300);transform:translateY(-2px)}
@keyframes spk-breathe{
  0%,100%{box-shadow:0 16px 34px -14px rgba(255,122,61,.7)}
  50%{box-shadow:0 18px 46px -10px rgba(255,162,107,.95)}
}

@media (max-width:860px){
  .spk-footer__grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .spk-footer__brand{grid-column:1 / -1}
}
@media (max-width:560px){
  .spk-footer__grid{grid-template-columns:1fr}
  .spk-footer__meta{justify-content:flex-start}
  .spk-footer__line{font-size:12px}
}

/* ---------- shared page primitives ---------- */
.spk-wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.spk-section{padding-block:clamp(40px,6vw,80px)}
.spk-grid{display:grid;gap:clamp(14px,2vw,22px);grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr))}
.spk-grid--stagger > *{min-width:0}
@media (min-width:960px){
  .spk-grid--stagger > *:nth-child(even){margin-top:26px}
}

.spk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan-300);
}
.spk-eyebrow::before{content:"";width:18px;height:1px;background:currentColor;opacity:.75}
.spk-h1{font-size:clamp(34px,6.4vw,64px);line-height:1.06;letter-spacing:-.02em;font-weight:800;color:var(--fog)}
.spk-h2{font-size:clamp(24px,3.6vw,38px);line-height:1.2;letter-spacing:-.01em;font-weight:800;color:var(--fog)}
.spk-h3{font-size:clamp(18px,2vw,22px);line-height:1.35;font-weight:700;color:var(--fog)}
.spk-lede{max-width:62ch;font-size:clamp(15px,1.6vw,18px);line-height:1.78;color:var(--mist)}
.spk-mono{font-family:var(--font-mono);letter-spacing:.06em}
.spk-rule{height:1px;border:0;background:linear-gradient(90deg,var(--line-strong),transparent)}

.spk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-pill);
  font-weight:700;font-size:15px;line-height:1.2;border:1px solid transparent;
  transition:transform .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.spk-btn--primary{background:var(--orange-500);color:#1B0700;box-shadow:0 14px 30px -18px rgba(255,122,61,.95)}
.spk-btn--primary:hover{background:var(--orange-300);transform:translateY(-1px)}
.spk-btn--ghost{border-color:var(--line-strong);color:var(--cyan-300);background:rgba(53,224,208,.06)}
.spk-btn--ghost:hover{background:rgba(53,224,208,.14);transform:translateY(-1px)}

.spk-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-soft);background:var(--surface-1);
  color:var(--mist);font-family:var(--font-mono);font-size:13px;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.spk-chip:hover{color:var(--fog);border-color:var(--line-strong)}
.spk-chip[aria-pressed="true"]{
  color:var(--cyan-300);border-color:var(--cyan-500);
  background:rgba(53,224,208,.16);
  box-shadow:inset 0 0 18px -8px rgba(53,224,208,.9);
}
.spk-tag{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(53,224,208,.12);color:var(--cyan-300);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
}

.spk-card{
  position:relative;min-width:0;
  padding:clamp(18px,2.4vw,26px);border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(16,44,70,.9),rgba(11,34,57,.94));
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow-soft);
}
.spk-plate{
  background:var(--paper);color:#12222E;
  border-radius:var(--r-md);padding:16px 18px;
  box-shadow:0 14px 30px -22px rgba(5,11,16,.95);
}
.spk-plate__no{
  display:block;margin-bottom:6px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:#8A5A3C;
}

.spk-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:0;font-family:var(--font-mono);font-size:12px;color:var(--mist)}
.spk-breadcrumb li{display:inline-flex;align-items:center}
.spk-breadcrumb li + li::before{content:"/";margin:0 8px;color:rgba(143,179,196,.5)}
.spk-breadcrumb__link{color:var(--mist);transition:color .18s ease}
.spk-breadcrumb__link:hover{color:var(--cyan-300)}

.spk-media{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--line-soft);
  background:linear-gradient(150deg,var(--ink-700),var(--ink-900) 72%);
  aspect-ratio:16 / 10;
}
.spk-media img,.spk-media video{width:100%;height:100%;object-fit:cover}
.spk-media--portrait{aspect-ratio:3 / 4}
.spk-media--square{aspect-ratio:1 / 1}
.spk-media__caption{
  position:absolute;left:12px;right:12px;bottom:12px;
  padding:6px 10px;border-radius:var(--r-sm);
  background:rgba(5,11,16,.74);color:var(--fog);
  font-family:var(--font-mono);font-size:12px;line-height:1.5;
}

html[data-reveal-ready] [data-reveal]{opacity:0;transform:translateY(16px)}
html[data-reveal-ready] [data-reveal].is-in{
  opacity:1;transform:none;
  transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.3,1);
}

@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[data-reveal-ready] [data-reveal]{opacity:1;transform:none}
}