*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse}

:root{
  --ink:#070B14;
  --ink-2:#0B1424;
  --line:#1B2A42;
  --line-soft:rgba(242,247,248,.12);
  --muted:#6F8199;
  --fog:#F2F7F8;
  --mint:#00E5A0;
  --mint-deep:#063D31;
  --amber:#FF6B35;
  --amber-deep:#4A1D0F;
  --violet:#7C5CFF;
  --violet-deep:#24164D;
  --white:#FFFFFF;

  --font-display:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --font-label:"Barlow Condensed","Oswald","Arial Narrow",var(--font-display);

  --rail:76px;
  --shell:1520px;
  --gutter:clamp(18px,3.4vw,40px);

  --dur:180ms;
  --ease:cubic-bezier(.22,.68,.28,1);
  --shadow-card:0 1px 0 rgba(242,247,248,.04),0 24px 48px -34px rgba(0,0,0,.92);
}

body{
  background-color:var(--ink);
  background-image:
    radial-gradient(90% 55% at 82% -12%,rgba(0,229,160,.075),transparent 62%),
    radial-gradient(70% 50% at -8% 108%,rgba(124,92,255,.07),transparent 70%);
  background-repeat:no-repeat;
  color:var(--fog);
  font-family:var(--font-display);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

:focus-visible{
  outline:2px solid var(--mint);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(0,229,160,.16);
  border-radius:2px;
}
#main-content{scroll-margin-top:96px}

.skip-link{
  position:absolute;left:16px;top:-72px;z-index:999;
  padding:10px 18px;border-radius:2px;
  background:var(--mint);color:#04120D;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.12em;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 头部框架 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,20,.93);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
  transition:background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header[data-scrolled="true"]{
  background:rgba(7,11,20,.985);
  box-shadow:0 1px 0 rgba(0,229,160,.2),0 26px 44px -34px #000;
}
.scroll-progress{
  position:absolute;left:0;bottom:0;height:2px;width:0;z-index:5;
  background:linear-gradient(90deg,var(--mint),var(--amber));
  box-shadow:0 0 14px rgba(0,229,160,.55);
  transition:width 90ms linear;
}
.site-header__frame{
  position:relative;
  display:grid;
  grid-template-columns:var(--rail) minmax(0,1fr);
  max-width:var(--shell);
  margin-inline:auto;
  border-left:1px solid var(--line-soft);
  border-right:1px solid var(--line-soft);
}
.site-header__rail{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  padding:16px 0;
  border-right:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(6,61,49,.38),rgba(7,11,20,0) 68%);
}
.rail__dot{
  flex:none;width:6px;height:6px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 4px rgba(0,229,160,.14),0 0 14px rgba(0,229,160,.8);
}
.rail__label{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.34em;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}
.site-header__bar{
  position:relative;
  display:flex;align-items:center;
  gap:clamp(14px,2.2vw,32px);
  min-height:76px;
  padding:14px clamp(18px,2.6vw,34px);
}

/* 品牌 */
.brand{
  display:inline-flex;align-items:center;gap:11px;flex:none;
  color:var(--fog);
  transition:opacity var(--dur) var(--ease);
}
.brand:hover{opacity:.82}
.brand__mark{
  position:relative;flex:none;width:30px;height:30px;
  border:1px solid rgba(0,229,160,.55);
  background:linear-gradient(140deg,rgba(0,229,160,.22),rgba(0,229,160,0) 62%);
  transform:skewX(-7deg);
}
.brand__mark::before{
  content:"";position:absolute;left:8px;top:8px;width:12px;height:12px;
  background:var(--mint);
}
.brand__mark::after{
  content:"";position:absolute;right:0;bottom:0;width:10px;height:10px;
  border-right:1px solid var(--amber);
  border-bottom:1px solid var(--amber);
}
.brand__text{display:block;line-height:1}
.brand__name{display:block;font-size:19px;font-weight:900;letter-spacing:-.04em}
.brand__sub{
  display:block;margin-top:6px;
  font-family:var(--font-label);font-size:10px;letter-spacing:.28em;text-transform:uppercase;
  color:var(--muted);
}

/* 导航 */
.site-nav{margin-left:auto}
.site-nav__list{
  display:flex;align-items:center;
  gap:clamp(12px,1.7vw,26px);
  counter-reset:navitem;
}
.site-nav__item{display:flex;counter-increment:navitem}
.site-nav__link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:6px 0 8px;
  font-size:14px;font-weight:500;letter-spacing:.01em;
  color:var(--muted);
  white-space:nowrap;
  transition:color var(--dur) var(--ease);
}
.site-nav__link::before{
  content:counter(navitem,decimal-leading-zero);
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.08em;
  color:var(--muted);opacity:.5;
  transform:translateY(-3px);
  transition:color var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;
  background:var(--mint);
  transform:scaleX(0);transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.site-nav__link:hover{color:var(--fog)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--mint)}
.site-nav__link[aria-current="page"]::before{color:var(--mint);opacity:1}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.site-nav__cta{display:none}

.site-header__actions{display:flex;align-items:center;gap:10px;flex:none}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 18px;
  border:1px solid transparent;border-radius:2px;
  font-size:13.5px;font-weight:700;line-height:1.1;letter-spacing:.01em;
  white-space:nowrap;text-align:center;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn--amber{background:var(--amber);border-color:var(--amber);color:#0A0500}
.btn--amber:hover{background:#FF8558;border-color:#FF8558}
.btn--amber:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--fog)}
.btn--ghost:hover{border-color:var(--mint);color:var(--mint)}
.btn--mint{background:var(--mint);border-color:var(--mint);color:#04120D}
.btn--mint:hover{background:#38F0B8;border-color:#38F0B8}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:11px 14px;
  border:1px solid var(--line);border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--fog);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--mint);color:var(--mint)}
.nav-toggle__bars{display:inline-grid;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:1.5px;background:currentColor;transition:transform var(--dur) var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(2.75px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-2.75px) rotate(-45deg)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,120px);
  background:var(--ink-2);
  border-top:1px solid var(--line-soft);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,160,.42),transparent);
  pointer-events:none;
}
.site-footer__frame{
  display:grid;
  grid-template-columns:var(--rail) minmax(0,1fr);
  max-width:var(--shell);
  margin-inline:auto;
  border-left:1px solid var(--line-soft);
  border-right:1px solid var(--line-soft);
}
.site-footer__rail{
  display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:18px;
  padding:44px 0;
  border-right:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(7,11,20,0),rgba(6,61,49,.34));
}
.site-footer__body{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1fr) minmax(0,1.1fr);
  gap:clamp(24px,3.2vw,54px);
  padding:clamp(36px,4.6vw,62px) var(--gutter);
}
.site-footer__brand{display:grid;align-content:start}
.site-footer__brand-line{margin-top:20px;font-size:14px;font-weight:700;letter-spacing:.02em;color:var(--fog)}
.site-footer__tagline{margin-top:8px;max-width:22em;font-size:13px;line-height:1.75;color:var(--muted)}

.footer-nav{display:flex;flex-wrap:wrap;gap:clamp(24px,3vw,44px)}
.footer-nav__group{min-width:96px}
.footer-nav__label{
  margin-bottom:12px;
  font-family:var(--font-label);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--mint);
}
.footer-nav__list{display:grid;gap:2px}
.footer-nav__link{
  position:relative;display:inline-block;padding:5px 0;
  font-size:13.5px;color:var(--muted);
  transition:color var(--dur) var(--ease);
}
.footer-nav__link::after{
  content:"";position:absolute;left:0;bottom:3px;width:100%;height:1px;
  background:var(--mint);
  transform:scaleX(0);transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.footer-nav__link:hover{color:var(--fog)}
.footer-nav__link:hover::after{transform:scaleX(1)}

.footer-contact{
  align-self:start;
  padding:18px 20px;
  border:1px solid var(--line-soft);
  border-radius:2px;
  background:rgba(7,11,20,.5);
  box-shadow:var(--shadow-card);
}
.footer-contact__row{
  display:grid;grid-template-columns:58px minmax(0,1fr);gap:12px;
  padding:9px 0;
  border-bottom:1px dashed rgba(242,247,248,.09);
}
.footer-contact__row:last-of-type{border-bottom:0}
.footer-contact__key{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--mint);padding-top:2px;
}
.footer-contact__value{
  font-family:var(--font-mono);font-size:12.5px;line-height:1.6;
  color:var(--fog);overflow-wrap:anywhere;
}
.footer-contact__note{margin-top:14px;font-size:12px;line-height:1.7;color:var(--muted)}

.site-footer__legal{
  grid-column:1/-1;
  display:flex;flex-wrap:wrap;align-items:center;
  gap:10px clamp(16px,3vw,32px);
  padding:16px var(--gutter);
  border-top:1px solid var(--line-soft);
  background:rgba(7,11,20,.62);
}
.site-footer__copyright{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--muted);
}
.site-footer__legal-links{display:flex;flex-wrap:wrap;gap:18px;margin-left:auto}
.site-footer__legal-links .footer-nav__link{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em}

/* ---------- 通用内容组件 ---------- */
.container{width:100%;max-width:1180px;margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(44px,6.5vw,88px)}
.rule{border:0;border-top:1px solid var(--line-soft);margin:0}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--mint);
}
.eyebrow::before{content:"";width:16px;height:1px;background:var(--mint)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border:1px solid var(--line);border-radius:2px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);background:rgba(7,11,20,.6);
}
.tag--mint{color:var(--mint);border-color:rgba(0,229,160,.4);background:rgba(6,61,49,.5)}
.tag--amber{color:var(--amber);border-color:rgba(255,107,53,.42);background:rgba(74,29,15,.55)}
.tag--violet{color:#B9A6FF;border-color:rgba(124,92,255,.45);background:rgba(36,22,77,.6)}

.index-num{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(56px,10vw,120px);line-height:.86;letter-spacing:-.04em;
  color:var(--fog);font-variant-numeric:tabular-nums;
}
.index-num--mint{color:var(--mint)}

.card{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:22px 22px 20px;
  border:1px solid var(--line-soft);border-radius:2px;
  background:linear-gradient(180deg,rgba(11,20,36,.9),rgba(7,11,20,.9));
  box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(0,229,160,.36)}
.card__index{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--mint)}
.card__title{font-size:18px;font-weight:800;line-height:1.4;letter-spacing:-.02em}
.card__text{font-size:13.5px;line-height:1.75;color:var(--muted)}
.card__action{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--fog);
}
.card:hover .card__action{color:var(--mint)}

.grid{display:grid;gap:clamp(16px,2.2vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

.media-frame{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--line-soft);border-radius:2px;
  background:linear-gradient(150deg,#0B1424,#070B14 58%,#08131F);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 90% at 82% 0%,rgba(0,229,160,.16),transparent 62%);
}
.media-frame > img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 220ms var(--ease),filter 220ms var(--ease);
}
.media-frame:hover > img{transform:scale(1.02)}
.media-frame--pitch{background:linear-gradient(155deg,#0B1424,#08202A 46%,#063D31)}
.media-frame--screen{background:linear-gradient(150deg,var(--violet-deep),#0B1424 56%,#0D1836)}
.media-frame--crowd{background:linear-gradient(160deg,#0B1424,#070B14 58%,var(--violet-deep))}
.media-frame--r16x9{aspect-ratio:16/9}
.media-frame--r4x3{aspect-ratio:4/3}
.media-frame--r1x1{aspect-ratio:1/1}
.media-frame--r3x4{aspect-ratio:3/4}
.media-frame--r21x9{aspect-ratio:21/9}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:0 10px;
  padding-block:18px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:10px}
.breadcrumb__item::after{content:"/";color:rgba(242,247,248,.22)}
.breadcrumb__item:last-child::after{content:""}
.breadcrumb__link{color:var(--muted);transition:color var(--dur) var(--ease)}
.breadcrumb__link:hover{color:var(--mint)}
.breadcrumb__current{color:var(--fog)}

/* 滚动显现协议 */
html.js-reveal [data-reveal]{opacity:0;transform:translateY(14px)}
html.js-reveal [data-reveal].is-revealed{
  opacity:1;transform:none;
  transition:opacity 420ms var(--ease),transform 420ms var(--ease);
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .site-nav__list{gap:14px}
  .site-nav__link{font-size:13px}
  .btn{padding:11px 14px;font-size:12.5px}
}
@media (max-width:1080px){
  .site-footer__body{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-contact{grid-column:1/-1}
}
@media (max-width:960px){
  .site-header__frame{grid-template-columns:minmax(0,1fr)}
  .site-header__rail{display:none}
  .site-header__bar{min-height:64px;padding:12px var(--gutter);gap:12px}
  .site-header__actions{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;z-index:40;
    display:none;margin:0;
    padding:10px var(--gutter) 22px;
    background:#0B1424;
    border-top:1px solid var(--line-soft);
    border-bottom:1px solid var(--line-soft);
    box-shadow:0 30px 60px -30px #000;
    max-height:calc(100vh - 64px);
    overflow-y:auto;
  }
  .site-nav[data-open="true"]{display:block}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__item{display:block}
  .site-nav__link{
    display:flex;align-items:center;gap:10px;
    padding:14px 2px;font-size:15px;
    border-bottom:1px solid var(--line-soft);
  }
  .site-nav__link::before{transform:none;font-size:10.5px}
  .site-nav__link::after{display:none}
  .site-nav__link[aria-current="page"]{box-shadow:inset 2px 0 0 var(--mint);padding-left:12px}
  .site-nav__cta{display:grid;gap:10px;margin-top:18px}
  .site-nav__cta .btn{width:100%;padding:14px 16px;font-size:14px}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer__frame{grid-template-columns:minmax(0,1fr)}
  .site-footer__rail{display:none}
}
@media (max-width:820px){
  .site-footer__body{grid-template-columns:minmax(0,1fr);gap:32px}
  .site-footer__legal-links{margin-left:0;gap:14px}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .card:hover{transform:none}
  .media-frame:hover > img{transform:none}
  html.js-reveal [data-reveal]{opacity:1;transform:none}
  .scroll-progress{transition:none}
}