/* ===== 01. reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:var(--cyan);text-underline-offset:3px}

/* ===== 02. 变量 ===== */
:root{
  --bg:#0A1730;
  --panel:#12233F;
  --panel-2:#17304F;
  --line:#25406B;
  --line-soft:rgba(37,64,107,.55);
  --amber:#F2B33D;
  --amber-soft:#FFD782;
  --cyan:#2FE0CE;
  --cyan-deep:#0E5C5A;
  --orange:#FF7A45;
  --green:#4ED8A0;
  --text:#EAF1FB;
  --muted:#9FB3D1;
  --dark:#0A1730;
  --rail-w:268px;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --ease:cubic-bezier(.22,.72,.28,1);
  --font-sans:"Noto Sans SC","Source Han Sans SC","Source Han Sans CN","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,"Courier New",monospace;
}

/* ===== 03. 基础排版 ===== */
body{
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 88% -6%,rgba(47,224,206,.10),transparent 62%),
    radial-gradient(720px 460px at 4% 10%,rgba(242,179,61,.075),transparent 60%);
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
h1,h2,h3,h4{line-height:1.25;font-weight:700;letter-spacing:-.012em}
h1{font-size:clamp(30px,5.6vw,44px)}
h2{font-size:clamp(24px,3.8vw,32px)}
h3{font-size:24px;font-weight:600}
h4{font-size:20px;font-weight:600}
p{margin-bottom:1em}
p:last-child{margin-bottom:0}
strong{font-weight:700;color:var(--text)}
::selection{background:rgba(242,179,61,.32);color:#fff}
:focus-visible{outline:3px solid var(--amber-soft);outline-offset:3px;border-radius:4px}

.num,.mono{
  font-family:var(--font-mono);
  font-weight:500;
  font-variant-numeric:tabular-nums;
  letter-spacing:0;
}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ===== 04. 无障碍跳转 ===== */
.skip-link{
  position:absolute;left:12px;top:-72px;z-index:300;
  background:var(--amber);color:#0A1730;
  font-size:14px;font-weight:700;letter-spacing:.04em;
  padding:12px 18px;border-radius:0 0 var(--r-sm) var(--r-sm);
  text-decoration:none;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:0}

/* ===== 05. 头部 · 框架式索引轨 ===== */
.nx-header{position:sticky;top:0;z-index:60}

.nx-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:80;
  background:rgba(37,64,107,.62);pointer-events:none;
}
.nx-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
  box-shadow:0 0 12px rgba(242,179,61,.5);
  transition:width .12s linear;
}

.nx-rail{
  position:relative;
  background:rgba(10,23,48,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nx-rail__head{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:12px clamp(14px,4vw,22px);
  min-height:64px;
}

.nx-brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text);min-width:0}
.nx-brand__mark{
  flex:0 0 auto;width:40px;height:40px;display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(150deg,var(--amber),var(--orange));
  color:#0A1730;font-family:var(--font-mono);font-weight:700;font-size:20px;line-height:1;
  box-shadow:0 8px 22px rgba(242,179,61,.24);
}
.nx-brand__text{display:block;min-width:0}
.nx-brand__line{display:block;font-size:15px;font-weight:700;letter-spacing:.02em;line-height:1.3}
.nx-brand__sub{display:block;font-size:12px;color:var(--muted);letter-spacing:.06em;line-height:1.5}

.nx-burger{
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 14px;border:1px solid var(--line);border-radius:999px;
  color:var(--muted);font-size:13px;font-weight:600;letter-spacing:.1em;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nx-burger:hover{border-color:var(--cyan);color:var(--cyan)}
.nx-burger__bars{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;position:relative;transition:background .2s var(--ease)}
.nx-burger__bars::before,.nx-burger__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:currentColor;
  transition:transform .24s var(--ease);
}
.nx-burger__bars::before{top:-6px}
.nx-burger__bars::after{top:6px}
.nx-rail[data-open] .nx-burger__bars{background:transparent}
.nx-rail[data-open] .nx-burger__bars::before{transform:translateY(6px) rotate(45deg)}
.nx-rail[data-open] .nx-burger__bars::after{transform:translateY(-6px) rotate(-45deg)}

.nx-rail__panel{display:none}
.nx-rail[data-open] .nx-rail__panel{
  display:block;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#12233F,#0A1730);
  max-height:calc(100vh - 66px);
  overflow-y:auto;
  animation:nxDrop .26s var(--ease);
}
@keyframes nxDrop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

.nx-nav__list{display:flex;flex-direction:column}
.nx-nav__link{
  display:flex;align-items:baseline;gap:12px;
  padding:14px 20px 14px 21px;
  border-left:3px solid transparent;
  color:var(--muted);text-decoration:none;font-size:16px;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.nx-nav__link:hover{color:var(--text);background:rgba(47,224,206,.07);border-left-color:rgba(47,224,206,.4)}
.nx-nav__link[aria-current="page"]{
  color:var(--amber);
  background:linear-gradient(90deg,rgba(242,179,61,.16),rgba(242,179,61,0) 72%);
  border-left-color:var(--amber);
  font-weight:600;
}
.nx-nav__idx{font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.12em;color:#3C5C8C}
.nx-nav__link[aria-current="page"] .nx-nav__idx{color:var(--amber-soft)}

.nx-rail__foot{display:grid;gap:10px;padding:16px 20px 22px;border-top:1px solid var(--line-soft)}
.nx-jump{
  display:block;text-decoration:none;
  border:1px dashed var(--line);border-radius:var(--r-md);
  padding:12px 14px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nx-jump:hover{border-color:var(--cyan);background:rgba(47,224,206,.06)}
.nx-jump__label{display:block;font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--cyan);text-transform:uppercase}
.nx-jump__hint{display:block;font-size:12px;color:var(--muted);margin-top:4px;letter-spacing:.04em}

/* ===== 06. 通用按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-sans);font-size:15px;font-weight:600;line-height:1;letter-spacing:.02em;
  padding:13px 22px;border-radius:999px;border:1px solid transparent;
  text-decoration:none;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--amber{background:var(--amber);color:#0A1730}
.btn--amber:hover{background:var(--amber-soft);box-shadow:0 10px 26px rgba(242,179,61,.3)}
.btn--cyan{background:var(--cyan);color:#04121F}
.btn--cyan:hover{background:#6BF0E2;box-shadow:0 10px 26px rgba(47,224,206,.24)}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--block{width:100%}

/* ===== 07. 布局容器 ===== */
.wrap{width:100%;max-width:1180px;margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
.wrap--narrow{max-width:800px}
.section{padding-block:clamp(40px,6vw,78px)}
.section--tight{padding-block:clamp(24px,3.2vw,44px)}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;
  margin-bottom:clamp(18px,2.4vw,30px);
}
.rule{height:1px;border:0;background:linear-gradient(90deg,var(--line),rgba(37,64,107,0) 78%);margin:clamp(26px,4vw,48px) 0}

.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);
  transition:color .3s var(--ease),transform .3s var(--ease);
}
.kicker::before{content:"";display:block;width:18px;height:2px;background:currentColor}
.kicker--amber{color:var(--amber)}
.lede{font-size:clamp(16px,1.9vw,19px);line-height:1.72;color:var(--muted);max-width:64ch}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);padding-block:22px}
.crumbs a{color:var(--muted);text-decoration:none;transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__sep{color:var(--line)}

/* ===== 08. 卡片 / Bento / 数据 ===== */
.card{
  position:relative;
  background:linear-gradient(180deg,rgba(18,35,63,.96),rgba(18,35,63,.8));
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(18px,2.4vw,26px);
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.card:hover{border-color:#37598E;transform:translateY(-2px)}
.card--tight{padding:16px;border-radius:var(--r-md)}
.card--flat{background:rgba(18,35,63,.55)}

.bento{display:grid;gap:clamp(12px,1.6vw,18px);grid-template-columns:1fr}
.bento > *{min-width:0}

.stat{display:flex;flex-direction:column;gap:6px}
.stat__num{
  font-family:var(--font-mono);font-weight:500;
  font-size:clamp(34px,5.6vw,52px);line-height:1.05;letter-spacing:-.02em;
  color:var(--amber);
}
.stat__unit{font-family:var(--font-mono);font-size:.4em;letter-spacing:.12em;color:var(--muted);margin-left:.4em}
.stat__label{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.stat--cyan .stat__num{color:var(--cyan)}
.stat--orange .stat__num{color:var(--orange)}
.stat--plain .stat__num{color:var(--text)}
.stat--small .stat__num{font-size:clamp(24px,3.4vw,32px)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.12em;
  padding:5px 10px;border-radius:6px;line-height:1.2;
  border:1px solid var(--line);color:var(--muted);
}
.tag--high{color:#04121F;background:var(--cyan);border-color:var(--cyan)}
.tag--mid{color:var(--amber);background:rgba(242,179,61,.1);border-color:rgba(242,179,61,.5)}
.tag--low{color:#8FF0E4;background:rgba(14,92,90,.62);border-color:var(--cyan-deep)}
.tag--wait{color:var(--orange);background:rgba(255,122,69,.1);border-color:rgba(255,122,69,.45)}
.tag--live{color:var(--green);background:rgba(78,216,160,.1);border-color:rgba(78,216,160,.45)}

/* ===== 09. 图片容器 ===== */
.media{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(140deg,#12233F 0%,#0E5C5A 160%);
}
.media > img,.media > svg,.media > video{display:block;width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(159,179,209,.075) 1px,transparent 1px),
    linear-gradient(90deg,rgba(159,179,209,.075) 1px,transparent 1px);
  background-size:32px 32px;
}
.media--plain::after{display:none}
.media__badge{position:absolute;left:14px;top:14px;z-index:2;display:inline-flex;gap:8px}

/* ===== 10. 页脚 ===== */
.nx-footer{
  margin-top:clamp(48px,8vw,96px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(18,35,63,.5),rgba(10,23,48,.96));
}
.nx-footer__inner{
  max-width:1180px;margin-inline:auto;
  padding:clamp(34px,5vw,58px) clamp(16px,4vw,40px) clamp(22px,3vw,32px);
  display:grid;gap:clamp(24px,3vw,40px);
  grid-template-columns:repeat(2,minmax(0,1fr));
}
.nx-footer__brand{grid-column:1 / -1;display:grid;gap:12px;align-content:start}
.nx-footer__mark{
  width:38px;height:38px;display:grid;place-items:center;border-radius:12px;
  background:linear-gradient(150deg,var(--amber),var(--orange));
  color:#0A1730;font-family:var(--font-mono);font-weight:700;font-size:19px;line-height:1;
}
.nx-footer__line{font-size:15px;font-weight:700;letter-spacing:.02em;line-height:1.6;max-width:34ch}
.nx-footer__note{font-size:13px;color:var(--muted);line-height:1.7;max-width:36ch}
.nx-footer__col-title{
  font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--text);margin-bottom:14px;
}
.nx-footer__list{display:grid;gap:10px;font-size:14px;line-height:1.65;color:var(--muted)}
.nx-footer__list a{color:var(--muted);text-decoration:none;transition:color .2s var(--ease)}
.nx-footer__list a:hover{color:var(--cyan)}
.nx-footer__contact .num{color:var(--amber-soft);font-size:13px;letter-spacing:.02em}
.nx-footer__base{
  max-width:1180px;margin-inline:auto;
  border-top:1px solid var(--line-soft);
  padding:18px clamp(16px,4vw,40px) 28px;
  display:flex;flex-wrap:wrap;gap:8px 26px;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.nx-footer__legal{margin:0;letter-spacing:.03em}

/* ===== 11. 动效协议 ===== */
.has-motion [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.has-motion [data-reveal].is-visible{opacity:1;transform:none}

[data-section]{position:relative}
[data-section].is-current > .kicker,
[data-section].is-current .kicker{color:var(--amber);transform:translateY(-2px)}

/* ===== 12. 断点 ===== */
@media (max-width:640px){
  .nx-brand__sub{display:none}
  .nx-burger__label{display:none}
  .nx-footer__inner{grid-template-columns:1fr}
}
@media (min-width:760px){
  .bento{grid-template-columns:repeat(12,minmax(0,1fr))}
  .bento > *{grid-column:span 12}
  .bento > .col-3{grid-column:span 3}
  .bento > .col-4{grid-column:span 4}
  .bento > .col-5{grid-column:span 5}
  .bento > .col-6{grid-column:span 6}
  .bento > .col-7{grid-column:span 7}
  .bento > .col-8{grid-column:span 8}
  .bento > .col-9{grid-column:span 9}
  .nx-footer__inner{grid-template-columns:repeat(4,minmax(0,1fr))}
  .nx-footer__brand{grid-column:1 / -1}
}
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .nx-header{position:static}
  .nx-progress{left:var(--rail-w)}
  .nx-rail{
    position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);
    display:flex;flex-direction:column;
    border-bottom:0;border-right:1px solid var(--line);
    padding-top:3px;
    background:linear-gradient(180deg,#0D1C38 0%,#0A1730 100%);
    -webkit-backdrop-filter:none;backdrop-filter:none;
    z-index:70;
  }
  .nx-rail::after{
    content:"";position:absolute;right:0;top:0;bottom:0;width:1px;pointer-events:none;
    background:repeating-linear-gradient(180deg,rgba(37,64,107,.9) 0 10px,transparent 10px 26px);
    opacity:.5;
  }
  .nx-rail__head{padding:24px 20px 20px;border-bottom:1px solid var(--line-soft);align-items:flex-start}
  .nx-brand__mark{width:44px;height:44px;font-size:21px}
  .nx-burger{display:none}
  .nx-rail__panel{
    display:flex;flex-direction:column;flex:1 1 auto;min-height:0;
    border-top:0;background:none;max-height:none;overflow:visible;
    animation:none;
  }
  .nx-nav{flex:1 1 auto;overflow-y:auto;padding:14px 0}
  .nx-nav__link{font-size:15px;padding:12px 20px 12px 21px}
  .nx-rail__foot{border-top:1px solid var(--line-soft);padding:16px 18px 24px}
  .nx-footer__inner{grid-template-columns:1.55fr 1fr 1fr 1fr 1.25fr}
  .nx-footer__brand{grid-column:auto}
}
@media (min-width:1280px){
  .wrap{max-width:1220px}
}

/* ===== 13. 减弱动态 ===== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .has-motion [data-reveal]{opacity:1;transform:none}
  [data-section] .kicker{transform:none}
  .card:hover{transform:none}
}