*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,canvas,picture{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
input,textarea,select{font:inherit}

:root{
  --ink:#0B1F3A;
  --ink-deep:#071528;
  --slate:#263B57;
  --graphite:#0F172A;
  --paper:#F7F9FC;
  --orange:#FF5A1F;
  --mint:#2EE6A8;
  --amber:#FFC53D;
  --cyan:#19D3FF;
  --violet:#7C5CFF;
  --gray:#64748B;
  --hair:rgba(247,249,252,.16);
  --hair-strong:rgba(247,249,252,.34);
  --hair-dark:rgba(15,23,42,.16);
  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --wrap:1240px;
  --pad:clamp(18px,4vw,48px);
  --gap:clamp(16px,2.4vw,32px);
  --head-h:76px;
  --dock-h:66px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-hard:6px 6px 0 0 rgba(3,10,20,.55);
}

body{
  font-family:var(--font-head);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  background-color:var(--ink);
  color:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body[data-nav-open]{overflow:hidden}
::selection{background:var(--orange);color:var(--ink)}

h1,h2,h3,h4{font-weight:900;line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(2.25rem,5.2vw,4.2rem);line-height:1.04}
h2{font-size:clamp(1.55rem,3vw,2.4rem)}
h3{font-size:clamp(1.1rem,1.7vw,1.45rem);line-height:1.35;font-weight:800}
h4{font-size:1rem;font-weight:800;line-height:1.5}
p{max-width:68ch}
strong,b{font-weight:800}
small{font-size:.82em}

:focus-visible{outline:2px solid var(--violet);outline-offset:3px}
a:focus-visible,button:focus-visible{outline:2px solid var(--violet);outline-offset:3px}

/* ---------- 通用容器与排版工具 ---------- */
.container{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.container--narrow{max-width:900px}
.section{padding-block:clamp(40px,6vw,80px)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px 28px;padding-bottom:14px;border-bottom:2px solid var(--slate);margin-bottom:clamp(20px,3vw,32px)}
.kicker{display:inline-block;font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
.num{font-family:var(--font-mono);font-weight:700;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.rule{height:2px;border:0;background:var(--slate);margin-block:clamp(20px,3vw,32px)}
.lede{font-size:clamp(1.02rem,1.4vw,1.16rem);line-height:1.8;color:rgba(247,249,252,.82)}
.muted{color:var(--gray)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:-96px;left:16px;z-index:400;
  padding:12px 20px;background:var(--orange);color:var(--ink);
  font-weight:800;font-size:15px;border:2px solid var(--graphite);
  box-shadow:4px 4px 0 0 var(--graphite);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:16px}

/* ---------- 头部 ---------- */
.site-head{
  position:sticky;top:0;z-index:120;
  background:var(--ink);
  border-bottom:2px solid var(--slate);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-head.is-scrolled{border-bottom-color:var(--orange);box-shadow:0 10px 24px -18px rgba(0,0,0,.9)}
.site-head__inner{
  position:relative;
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding-inline:var(--pad);
  min-height:var(--head-h);
  display:flex;align-items:center;gap:clamp(14px,2.4vw,32px);
}
.site-head__progress{position:absolute;left:0;right:0;bottom:-2px;height:2px;background:transparent;z-index:3;pointer-events:none}
.site-head__progress-fill{display:block;height:100%;width:0;background:var(--cyan);box-shadow:0 0 10px rgba(25,211,255,.7)}

.brand{display:flex;align-items:center;gap:12px;margin-right:auto;flex:0 0 auto}
.brand__mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:40px;height:40px;
  background:var(--orange);color:var(--ink-deep);
  font-family:var(--font-mono);font-size:14px;font-weight:700;letter-spacing:.02em;
  border:2px solid var(--ink-deep);
  box-shadow:3px 3px 0 0 var(--cyan);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.brand:hover .brand__mark{transform:translate(-1px,-1px);box-shadow:5px 5px 0 0 var(--cyan)}
.brand__text{display:block}
.brand__name{display:block;font-size:15px;font-weight:900;line-height:1.2;letter-spacing:.01em;color:var(--paper)}
.brand__meta{display:flex;align-items:center;gap:7px;margin-top:4px;font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--mint)}

.status-dot{
  display:inline-block;flex:0 0 auto;width:7px;height:7px;background:var(--mint);
  box-shadow:0 0 0 2px rgba(46,230,168,.22);
  animation:statusPulse 2.6s var(--ease) infinite;
}
@keyframes statusPulse{
  0%,100%{box-shadow:0 0 0 2px rgba(46,230,168,.22);opacity:1}
  50%{box-shadow:0 0 0 5px rgba(46,230,168,0);opacity:.72}
}

/* ---------- 导航 ---------- */
.site-nav{display:flex;align-items:center;gap:clamp(10px,1.4vw,20px);margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:clamp(4px,1vw,14px);flex-wrap:wrap}
.site-nav__link{
  display:inline-flex;align-items:baseline;gap:7px;
  padding:7px 1px 8px;
  font-size:14px;font-weight:700;line-height:1.2;
  color:rgba(247,249,252,.72);
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.site-nav__idx{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.06em;color:var(--cyan);opacity:.75}
.site-nav__link:hover{color:var(--paper);border-bottom-color:var(--hair-strong)}
.site-nav__link:hover .site-nav__idx{opacity:1}
.site-nav__link[aria-current="page"]{color:var(--orange);border-bottom-color:var(--orange)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--orange);opacity:1}
.site-nav__cta{margin-left:clamp(6px,1vw,14px)}

.nav-toggle{
  display:none;align-items:center;gap:9px;margin-left:auto;
  padding:9px 13px;
  border:2px solid var(--hair-strong);color:var(--paper);
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.16em;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange)}
.nav-toggle__bars{display:grid;gap:3px;width:16px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.site-head[data-open] .nav-toggle{border-color:var(--orange);color:var(--orange)}
.site-head[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-head[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-head[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;
  font-family:var(--font-head);font-size:14.5px;font-weight:800;line-height:1.2;
  color:var(--ink);background:var(--paper);
  border:2px solid transparent;
  box-shadow:4px 4px 0 0 var(--orange);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 0 var(--orange)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 0 var(--orange)}
.btn--primary{background:var(--orange);color:var(--ink-deep);box-shadow:4px 4px 0 0 var(--cyan)}
.btn--primary:hover{box-shadow:6px 6px 0 0 var(--cyan)}
.btn--primary:active{box-shadow:1px 1px 0 0 var(--cyan)}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--hair-strong);box-shadow:4px 4px 0 0 var(--slate)}
.btn--ghost:hover{background:var(--slate);border-color:var(--paper);box-shadow:6px 6px 0 0 var(--orange)}
.btn--ghost:active{box-shadow:1px 1px 0 0 var(--orange)}
.btn--sm{padding:9px 15px;font-size:13px;box-shadow:3px 3px 0 0 var(--cyan)}
.btn--sm:hover{box-shadow:5px 5px 0 0 var(--cyan)}
.btn--sm:active{box-shadow:1px 1px 0 0 var(--cyan)}
.btn--ghost.btn--sm{box-shadow:3px 3px 0 0 var(--slate)}
.btn--ghost.btn--sm:hover{box-shadow:5px 5px 0 0 var(--orange)}

/* ---------- 标签与状态 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  background:var(--slate);color:var(--paper);border:1.5px solid transparent;
  white-space:nowrap;
}
.tag--live{background:var(--mint);color:var(--ink-deep)}
.tag--change{background:var(--amber);color:var(--graphite)}
.tag--action{background:var(--orange);color:var(--ink-deep)}
.tag--data{background:transparent;color:var(--cyan);border-color:currentColor}

/* ---------- 堆叠面板 ---------- */
.panel{
  position:relative;
  background:var(--slate);color:var(--paper);
  border:2px solid var(--slate);
  box-shadow:var(--shadow-hard);
}
.panel--paper{background:var(--paper);color:var(--graphite);border-color:var(--graphite);box-shadow:6px 6px 0 0 var(--orange)}
.panel__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 20px;border-bottom:1px solid var(--hair)}
.panel--paper .panel__head{border-bottom-color:var(--hair-dark)}
.panel__body{padding:clamp(18px,2.6vw,30px)}
.panel--paper a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1.5px}
.panel--paper a:hover{color:var(--orange)}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin-bottom:clamp(16px,2vw,24px)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--gray)}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li:not(:last-child)::after{content:"/";color:var(--slate)}
.breadcrumb a{color:rgba(247,249,252,.72);transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb [aria-current="page"]{color:var(--cyan)}

/* ---------- 图片容器基础 ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  background:var(--slate);
  border:2px solid var(--slate);
  box-shadow:var(--shadow-hard);
}
.media>img,.media>svg,.media>picture>img{display:block;width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--portrait{aspect-ratio:3/4}
.media--grid{
  background-color:var(--slate);
  background-image:
    linear-gradient(to right,rgba(25,211,255,.22) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(25,211,255,.22) 1px,transparent 1px);
  background-size:36px 36px;
}
.media__caption{margin-top:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--gray)}
.media__badge{position:absolute;top:12px;left:12px;padding:3px 9px;background:var(--ink);color:var(--mint);font-family:var(--font-mono);font-size:11px;letter-spacing:.1em}

/* ---------- 页脚 ---------- */
.site-foot{
  position:relative;
  background-color:var(--ink-deep);
  color:var(--paper);
  border-top:2px solid var(--slate);
  padding-block:clamp(40px,6vw,72px) calc(var(--dock-h) + 28px);
  background-image:
    linear-gradient(to right,rgba(25,211,255,.07) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(25,211,255,.07) 1px,transparent 1px);
  background-size:64px 64px;
}
.site-foot__grid{
  width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad);
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:clamp(24px,3.2vw,48px);
}
.site-foot__brand{min-width:0}
.site-foot__coord{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--cyan);text-transform:uppercase}
.site-foot__name{margin-top:10px;font-size:clamp(1.1rem,1.8vw,1.35rem);font-weight:900;line-height:1.25}
.site-foot__note{margin-top:12px;max-width:34ch;font-size:13.5px;line-height:1.7;color:rgba(247,249,252,.62)}
.site-foot__cta{margin-top:20px}
.site-foot__title{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin-bottom:14px}
.site-foot__list{display:grid;gap:9px}
.site-foot__list a{
  display:inline-block;font-size:14.5px;font-weight:500;color:rgba(247,249,252,.74);
  border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease);
}
.site-foot__list a:hover{color:var(--orange);border-bottom-color:var(--orange)}
.site-foot__legal{
  width:100%;max-width:var(--wrap);margin:clamp(32px,4vw,52px) auto 0;padding:20px var(--pad) 0;
  border-top:1px solid var(--hair);
  display:flex;flex-wrap:wrap;gap:10px 28px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--gray);
}
.site-foot__legal-item{white-space:nowrap}

/* ---------- 底部常驻联系条 ---------- */
.dock{
  position:fixed;left:0;right:0;bottom:0;z-index:200;
  background:var(--ink);
  border-top:2px solid var(--orange);
  box-shadow:0 -14px 30px -22px rgba(0,0,0,.95);
}
.dock__bar{
  width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad);
  min-height:var(--dock-h);
  display:flex;align-items:center;flex-wrap:wrap;gap:10px clamp(12px,2vw,26px);
}
.dock__lead{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--mint);
  white-space:nowrap;
}
.dock__lead-sub{font-size:10.5px;letter-spacing:.1em;color:var(--gray)}
.dock__cta{flex:0 0 auto;white-space:nowrap}
.dock__meta{display:flex;align-items:center;gap:clamp(12px,2vw,24px);margin-left:auto;flex-wrap:wrap}
.dock__item{display:inline-flex;align-items:baseline;gap:8px;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.02em;color:var(--paper);white-space:nowrap}
.dock__k{font-size:10px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--gray)}
.dock__link{
  font-size:12.5px;font-weight:700;color:var(--cyan);
  border-bottom:1.5px solid rgba(25,211,255,.4);
  transition:color .16s var(--ease),border-color .16s var(--ease);
  white-space:nowrap;
}
.dock__link:hover{color:var(--orange);border-bottom-color:var(--orange)}
.dock__toggle{
  display:none;align-items:center;gap:6px;margin-left:auto;
  padding:7px 12px;border:1.5px solid var(--hair-strong);
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.12em;color:var(--paper);
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.dock__toggle:hover{border-color:var(--orange);color:var(--orange)}

/* ---------- 显现协议 ---------- */
[data-reveal-ready]{opacity:0;transform:translateY(14px)}
[data-reveal-visible]{opacity:1;transform:none}
[data-reveal-ready]{transition:opacity .5s var(--ease),transform .5s var(--ease)}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  :root{--head-h:64px}
  .site-head__inner{gap:12px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;z-index:110;
    top:var(--head-h);right:0;bottom:0;left:0;
    margin:0;padding:20px var(--pad) 40px;
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    background:var(--ink);
    border-top:2px solid var(--orange);
    overflow-y:auto;
    opacity:0;visibility:hidden;transform:translate3d(0,-10px,0);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s linear;
  }
  .site-head[data-open] .site-nav{opacity:1;visibility:visible;transform:none}
  .site-nav__list{flex-direction:column;align-items:stretch;flex-wrap:nowrap;gap:0;width:100%}
  .site-nav__list li+li{border-top:1px solid var(--hair)}
  .site-nav__link{
    display:flex;align-items:center;gap:14px;width:100%;
    padding:16px 4px;font-size:18px;
    border-bottom:0;color:var(--paper);
  }
  .site-nav__idx{font-size:12px;letter-spacing:.1em}
  .site-nav__link[aria-current="page"]{box-shadow:inset 3px 0 0 0 var(--orange);padding-left:12px}
  .site-nav__cta{margin:26px 0 0;width:100%;justify-content:center;padding:14px 20px;font-size:15px}
  .site-foot__grid{grid-template-columns:1fr 1fr 1fr}
  .site-foot__brand{grid-column:1 / -1}
  .dock__meta{margin-left:auto}
}
@media (max-width:900px){
  .dock__toggle{display:inline-flex}
  .dock__bar{padding-block:9px}
  .dock__cta{order:2}
  .dock__lead{order:1}
  .dock__toggle{order:3}
  .dock__meta{
    order:4;flex-basis:100%;
    display:none;flex-direction:column;align-items:flex-start;gap:8px;
    margin:0;padding:12px 0 4px;border-top:1px solid var(--hair);
  }
  .dock[data-open] .dock__meta{display:flex}
  .dock__lead-sub{display:none}
}
@media (max-width:760px){
  body{font-size:16px}
  .site-foot__grid{grid-template-columns:1fr 1fr;gap:26px}
  .site-foot__legal{font-size:11px;gap:8px 18px}
  .panel{box-shadow:4px 4px 0 0 rgba(3,10,20,.55)}
  .panel--paper{box-shadow:4px 4px 0 0 var(--orange)}
  .media{box-shadow:4px 4px 0 0 rgba(3,10,20,.55)}
}
@media (max-width:600px){
  :root{--dock-h:60px}
  .brand__mark{width:34px;height:34px;font-size:12px;box-shadow:2px 2px 0 0 var(--cyan)}
  .brand__name{font-size:13px}
  .brand__meta{font-size:9.5px;letter-spacing:.1em}
  .nav-toggle{padding:8px 10px;font-size:10px;letter-spacing:.1em}
  .site-foot__grid{grid-template-columns:1fr}
  .site-foot__note{max-width:none}
  .dock__lead-text{font-size:10.5px;letter-spacing:.08em}
  .dock__cta{padding:8px 12px;font-size:12.5px;box-shadow:2px 2px 0 0 var(--cyan)}
  .dock__toggle{padding:6px 10px;font-size:10px}
}
@media (max-width:420px){
  .brand__name{font-size:12px}
  .dock__lead-text{display:none}
}

/* ---------- 无障碍与减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal-ready]{opacity:1;transform:none}
  .status-dot{animation:none}
  .btn:hover,.brand:hover .brand__mark{transform:none}
}
@media (forced-colors:active){
  .site-head,.site-foot,.dock,.panel,.media{border:1px solid CanvasText}
  .site-nav__link[aria-current="page"]{outline:2px solid Highlight}
}