/* ==========================================================================
   PG游艺 · 夜航数字港口 · 共享样式表 /assets/site.css
   顺序：reset → 变量 → 基准排版 → 通用组件 → 头部 → 导航 → 页脚 → 动效
   ========================================================================== */

/* ---------- 1. RESET ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0;height:1px;background:rgba(127,243,234,.16)}

/* ---------- 2. 变量 ---------- */
:root{
  --nh-ink:#081226;
  --nh-deep:#11214A;
  --nh-cyan:#22E0D6;
  --nh-violet:#8B5CF6;
  --nh-gold:#F5C451;
  --nh-fog:#EAF2FF;
  --nh-glass:#7FF3EA;
  --nh-signal:#3DDC97;
  --nh-mute:#A9B8D4;
  --nh-coal:#040914;
  --nh-text:#DCE7FB;
  --nh-line:rgba(127,243,234,.16);
  --nh-line-soft:rgba(127,243,234,.10);

  --nh-font-display:"Optima","Avenir Next","Segoe UI Variable Display","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --nh-font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --nh-font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono","Cascadia Mono",Menlo,Consolas,"PingFang SC",monospace;

  --nh-radius:22px;
  --nh-radius-lg:28px;
  --nh-header-h:72px;
  --nh-shadow:0 40px 90px -60px rgba(34,224,214,.55);
}

/* ---------- 3. 基准排版 ---------- */
body{
  min-height:100%;
  background:var(--nh-ink);
  color:var(--nh-text);
  font-family:var(--nh-font-body);
  font-size:clamp(16px,.55vw + 14.6px,17.5px);
  line-height:1.75;
  letter-spacing:.012em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(90% 60% at 85% -10%,rgba(139,92,246,.22),transparent 62%),
    radial-gradient(70% 55% at 4% 8%,rgba(34,224,214,.14),transparent 60%),
    radial-gradient(120% 70% at 50% 118%,rgba(245,196,81,.10),transparent 65%),
    var(--nh-ink);
}
::selection{background:rgba(34,224,214,.35);color:#fff}

.nh-h1,.nh-h2,.nh-h3{font-family:var(--nh-font-display);color:var(--nh-fog)}
.nh-h1{font-weight:200;font-size:clamp(2.5rem,6.4vw,5.4rem);line-height:1.02;letter-spacing:-.005em}
.nh-h2{font-weight:200;font-size:clamp(1.85rem,3.6vw,3.15rem);line-height:1.14;letter-spacing:.01em}
.nh-h3{font-weight:500;font-size:clamp(1.15rem,1.6vw,1.55rem);line-height:1.4}
.nh-lede{font-size:clamp(1.02rem,1.2vw,1.18rem);line-height:1.9;color:#C6D5EE;max-width:58ch}
.nh-mono{font-family:var(--nh-font-mono);font-size:.74rem;letter-spacing:.14em;color:var(--nh-mute)}
.nh-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--nh-font-mono);font-size:.7rem;letter-spacing:.24em;
  color:var(--nh-cyan);text-transform:uppercase;
}
.nh-eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--nh-cyan),transparent)}
.nh-visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 4. 布局与容器 ---------- */
.nh-shell,.nh-footer__inner,.nh-footer__base,.nh-header__inner{
  width:min(1240px,100% - clamp(32px,6vw,88px));
  margin-inline:auto;
}
.nh-header__inner,.nh-footer__inner{width:min(1360px,100% - clamp(24px,4.5vw,72px))}
.nh-section{padding:clamp(52px,6.5vw,104px) 0;position:relative}
.nh-section__head{display:grid;gap:14px;max-width:70ch;margin-bottom:clamp(26px,3vw,46px)}
.nh-stack{display:grid;gap:clamp(20px,2.6vw,38px)}
.nh-stack--stagger > *:nth-child(even){margin-left:clamp(0px,4vw,72px)}
.nh-grid{display:grid;gap:clamp(16px,2vw,28px)}
.nh-grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.nh-grid--3{grid-template-columns:repeat(auto-fit,minmax(228px,1fr))}
.nh-grid--dense{grid-template-columns:repeat(auto-fill,minmax(176px,1fr))}
.nh-split{display:grid;gap:clamp(28px,4vw,56px);grid-template-columns:1fr}
@media(min-width:960px){.nh-split{grid-template-columns:1.05fr .95fr;align-items:center}}
.nh-actions-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- 5. 按钮 / 标签 / 复制 ---------- */
.nh-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:999px;
  font-size:.84rem;font-weight:600;letter-spacing:.1em;white-space:nowrap;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.nh-btn--solid{
  color:#04121A;
  background:linear-gradient(120deg,var(--nh-cyan),#5EF0E6 42%,var(--nh-violet));
  box-shadow:0 14px 34px -18px rgba(34,224,214,.95),inset 0 0 0 1px rgba(127,243,234,.35);
}
.nh-btn--solid:hover{transform:translateY(-2px);box-shadow:0 20px 44px -18px rgba(34,224,214,1),inset 0 0 0 1px rgba(127,243,234,.55)}
.nh-btn--ghost{color:var(--nh-fog);border:1px solid rgba(127,243,234,.3);background:rgba(127,243,234,.05)}
.nh-btn--ghost:hover{border-color:var(--nh-cyan);background:rgba(34,224,214,.14);transform:translateY(-2px)}
.nh-btn--wide{width:100%}

.nh-tag,.nh-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-family:var(--nh-font-mono);font-size:.66rem;letter-spacing:.14em;
  color:var(--nh-glass);border:1px solid rgba(127,243,234,.28);background:rgba(34,224,214,.08);
}
.nh-tag--gold,.nh-chip--gold{color:var(--nh-gold);border-color:rgba(245,196,81,.36);background:rgba(245,196,81,.1)}
.nh-tag--violet{color:#C9B6FF;border-color:rgba(139,92,246,.42);background:rgba(139,92,246,.14)}
.nh-tag--ok{color:#0A2A1E;border-color:var(--nh-signal);background:var(--nh-signal)}

.nh-copy{
  font-family:var(--nh-font-mono);font-size:.64rem;letter-spacing:.12em;
  padding:5px 10px;border-radius:999px;
  color:var(--nh-mute);border:1px solid rgba(169,184,212,.32);
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.nh-copy:hover{color:#04121A;background:var(--nh-cyan);border-color:var(--nh-cyan)}
.nh-copy[data-copied]{color:#04121A;background:var(--nh-signal);border-color:var(--nh-signal)}

/* ---------- 6. 面板 / 卡片 / 索引 / 时间轴 / 技能树 ---------- */
.nh-panel{
  position:relative;border-radius:var(--nh-radius-lg);
  padding:clamp(24px,3.2vw,48px);
  background:linear-gradient(160deg,rgba(17,33,74,.92),rgba(8,18,38,.96));
  border:1px solid var(--nh-line);
  box-shadow:var(--nh-shadow);
}
.nh-panel--glass{
  background:linear-gradient(160deg,rgba(127,243,234,.11),rgba(139,92,246,.09));
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.nh-panel--solid{background:#0D1A36;border-color:rgba(127,243,234,.22)}
.nh-panel--overlap{margin-top:calc(-1 * clamp(16px,3vw,54px))}

.nh-card{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:clamp(20px,2.4vw,30px);border-radius:var(--nh-radius);
  border:1px solid var(--nh-line);
  background:linear-gradient(150deg,rgba(17,33,74,.84),rgba(8,18,38,.94));
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.nh-card:hover{transform:translateY(-4px);border-color:rgba(34,224,214,.45);box-shadow:0 34px 70px -52px rgba(34,224,214,.95)}
.nh-card--glass{background:linear-gradient(150deg,rgba(127,243,234,.1),rgba(139,92,246,.09));-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.nh-card__kicker{font-family:var(--nh-font-mono);font-size:.68rem;letter-spacing:.18em;color:var(--nh-gold)}
.nh-card__title{font-size:1.1rem;font-weight:600;color:var(--nh-fog);line-height:1.5}
.nh-card__text{font-size:.9rem;line-height:1.85;color:var(--nh-mute)}

.nh-index-grid{
  display:grid;gap:1px;
  grid-template-columns:repeat(auto-fill,minmax(188px,1fr));
  background:var(--nh-line);border:1px solid var(--nh-line);
  border-radius:var(--nh-radius);overflow:hidden;
}
.nh-index-item{
  display:flex;flex-direction:column;gap:6px;
  padding:18px 20px;background:rgba(9,20,42,.94);
  transition:background .25s ease,transform .25s ease;
}
.nh-index-item:hover{background:rgba(17,33,74,.98)}
.nh-index-item__num{font-family:var(--nh-font-mono);font-size:.68rem;letter-spacing:.16em;color:var(--nh-gold)}
.nh-index-item__title{font-size:.98rem;color:var(--nh-fog);line-height:1.55}
.nh-index-item__meta{font-size:.76rem;color:var(--nh-mute)}

.nh-timeline{position:relative;display:grid;gap:26px;padding-left:28px}
.nh-timeline::before{
  content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--nh-cyan),rgba(139,92,246,.55),transparent);
}
.nh-timeline__item{position:relative}
.nh-timeline__item::before{
  content:"";position:absolute;left:-28px;top:.6em;width:11px;height:11px;border-radius:50%;
  background:var(--nh-ink);border:1px solid var(--nh-cyan);box-shadow:0 0 14px rgba(34,224,214,.65);
}
.nh-timeline__label{font-family:var(--nh-font-mono);font-size:.68rem;letter-spacing:.16em;color:var(--nh-gold)}

.nh-tree{display:grid;gap:14px}
.nh-tree__step{
  position:relative;display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;
  padding:18px 20px;border-radius:18px;border:1px solid var(--nh-line);
  background:linear-gradient(140deg,rgba(17,33,74,.72),rgba(8,18,38,.88));
  transition:border-color .25s ease,transform .25s ease;
}
.nh-tree__step:hover{border-color:rgba(34,224,214,.45);transform:translateX(4px)}
.nh-tree__step + .nh-tree__step::before{
  content:"";position:absolute;left:35px;top:-14px;height:14px;width:1px;background:rgba(127,243,234,.4);
}
.nh-tree__index{
  display:grid;place-items:center;width:36px;height:36px;border-radius:12px;
  font-family:var(--nh-font-mono);font-size:.72rem;color:#04121A;
  background:linear-gradient(135deg,var(--nh-cyan),var(--nh-violet));
}
.nh-tree__body h3{font-size:1rem;color:var(--nh-fog);line-height:1.5}
.nh-tree__body p{font-size:.87rem;color:var(--nh-mute);margin-top:5px;line-height:1.8}

/* ---------- 7. 面包屑 / 长文 / 图片容器 ---------- */
.nh-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-family:var(--nh-font-mono);font-size:.7rem;letter-spacing:.14em;color:var(--nh-mute);
}
.nh-breadcrumb li{display:flex;align-items:center;gap:10px}
.nh-breadcrumb li + li::before{content:"/";color:rgba(127,243,234,.42)}
.nh-breadcrumb a{transition:color .2s ease}
.nh-breadcrumb a:hover{color:var(--nh-cyan)}
.nh-breadcrumb [aria-current="page"]{color:var(--nh-glass)}

.nh-prose{max-width:68ch;color:#CFDCF2;font-size:1.02rem}
.nh-prose > * + *{margin-top:1.1em}
.nh-prose h2{font-family:var(--nh-font-display);font-weight:200;font-size:clamp(1.55rem,2.6vw,2.2rem);line-height:1.22;color:var(--nh-fog);margin-top:2em}
.nh-prose h3{font-size:1.14rem;font-weight:600;color:var(--nh-fog);margin-top:1.7em}
.nh-prose ul{display:grid;gap:.55em}
.nh-prose ul li{position:relative;padding-left:1.5em}
.nh-prose ul li::before{
  content:"";position:absolute;left:.15em;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--nh-cyan);box-shadow:0 0 12px rgba(34,224,214,.85);
}
.nh-prose strong{color:#fff;font-weight:600}
.nh-prose a{color:var(--nh-cyan);border-bottom:1px solid rgba(34,224,214,.42)}
.nh-prose a:hover{border-bottom-color:var(--nh-cyan)}

.nh-media{
  position:relative;display:block;overflow:hidden;isolation:isolate;
  aspect-ratio:16/10;border-radius:var(--nh-radius);
  border:1px solid rgba(127,243,234,.2);
  background:
    radial-gradient(120% 90% at 12% 0%,rgba(139,92,246,.36),transparent 62%),
    radial-gradient(100% 80% at 90% 100%,rgba(34,224,214,.26),transparent 60%),
    linear-gradient(160deg,#11214A,#081226);
}
.nh-media > img,.nh-media > picture > img,.nh-media > video{width:100%;height:100%;object-fit:cover}
.nh-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 42%,rgba(4,9,20,.74));
}
.nh-media--wide{aspect-ratio:21/9}
.nh-media--tall{aspect-ratio:3/4}
.nh-media--square{aspect-ratio:1/1}
.nh-media--plain::after{display:none}
.nh-media__caption{
  position:absolute;left:16px;right:16px;bottom:14px;z-index:2;
  font-family:var(--nh-font-mono);font-size:.66rem;letter-spacing:.14em;color:var(--nh-glass);
}

/* ---------- 8. 头部 ---------- */
.nh-skip{
  position:fixed;left:16px;top:-70px;z-index:130;
  padding:10px 18px;border-radius:999px;
  background:var(--nh-cyan);color:#04121A;font-size:.84rem;font-weight:600;letter-spacing:.08em;
  transition:top .22s ease;
}
.nh-skip:focus{top:14px}

.nh-header{
  position:sticky;top:0;z-index:100;isolation:isolate;
  border-bottom:1px solid var(--nh-line-soft);
}
.nh-header__veil{
  position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(6,14,30,.94),rgba(8,18,38,.84));
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
}
.nh-header__rail{
  position:absolute;left:0;right:0;bottom:-1px;height:1px;z-index:2;
  background:linear-gradient(90deg,transparent,var(--nh-cyan),var(--nh-violet),var(--nh-gold),transparent);
  opacity:.7;
}
.nh-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;z-index:3;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--nh-cyan),var(--nh-violet) 56%,var(--nh-gold));
}
.nh-header[data-scrolled] .nh-header__veil{background:linear-gradient(180deg,rgba(5,12,26,.97),rgba(8,18,38,.92))}

.nh-tier{display:flex;align-items:center;gap:18px}
.nh-tier--brand{padding:14px 0 11px}
.nh-tier--nav{border-top:1px solid var(--nh-line-soft)}

.nh-brand{display:inline-flex;align-items:center;gap:12px}
.nh-brand__mark{
  display:grid;place-items:center;width:44px;height:44px;border-radius:14px;flex:none;
  font-family:var(--nh-font-mono);font-size:.94rem;font-weight:700;letter-spacing:.04em;color:#04121A;
  background:linear-gradient(135deg,var(--nh-cyan),var(--nh-violet) 72%);
  box-shadow:inset 0 0 0 1px rgba(127,243,234,.5),0 12px 30px -16px rgba(34,224,214,.9);
}
.nh-brand__text{display:flex;flex-direction:column;line-height:1.28}
.nh-brand__name{font-size:1.05rem;font-weight:600;letter-spacing:.14em;color:var(--nh-fog)}
.nh-brand__tagline{font-family:var(--nh-font-mono);font-size:.66rem;letter-spacing:.22em;color:var(--nh-mute)}
.nh-brand--stack{align-items:flex-start}

.nh-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nh-utility{display:flex;gap:18px}
.nh-utility__link{
  position:relative;padding:6px 0;
  font-size:.82rem;letter-spacing:.08em;color:var(--nh-mute);
  transition:color .24s ease;
}
.nh-utility__link::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;
  background:var(--nh-cyan);transition:right .28s ease;
}
.nh-utility__link:hover{color:var(--nh-fog)}
.nh-utility__link:hover::after{right:0}

.nh-burger{
  display:none;align-items:center;gap:10px;margin-left:auto;
  padding:10px 14px;border-radius:14px;
  border:1px solid rgba(127,243,234,.28);background:rgba(17,33,74,.6);
  color:var(--nh-fog);font-family:var(--nh-font-mono);font-size:.74rem;letter-spacing:.18em;
}
.nh-burger__bars{display:grid;gap:5px;width:20px}
.nh-burger__bars span{display:block;height:1.5px;border-radius:2px;background:currentColor;transition:transform .3s ease,opacity .25s ease}
.nh-burger[aria-expanded="true"]{border-color:var(--nh-cyan);color:var(--nh-cyan)}
.nh-burger[aria-expanded="true"] .nh-burger__bars span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nh-burger[aria-expanded="true"] .nh-burger__bars span:nth-child(2){opacity:0}
.nh-burger[aria-expanded="true"] .nh-burger__bars span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- 9. 双层导航 ---------- */
.nh-nav{display:flex;align-items:center;width:100%}
.nh-nav__list{display:flex;align-items:center;gap:clamp(4px,1.5vw,24px)}
.nh-nav__item{display:flex}
.nh-nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:8px;
  padding:15px 8px 16px;
  font-size:.9rem;letter-spacing:.06em;color:#C8D6EF;
  transition:color .24s ease;
}
.nh-nav__num{font-family:var(--nh-font-mono);font-size:.62rem;letter-spacing:.1em;color:rgba(245,196,81,.78)}
.nh-nav__link::after{
  content:"";position:absolute;left:8px;right:8px;bottom:9px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--nh-cyan),var(--nh-violet));
  transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.nh-nav__link:hover{color:#fff}
.nh-nav__link:hover::after{transform:scaleX(1)}
.nh-nav__link[aria-current="page"]{color:#fff}
.nh-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.nh-nav__link[aria-current="page"] .nh-nav__num{color:var(--nh-cyan)}
.nh-nav__foot{display:none}

html.nh-lock{overflow:hidden}

@media(max-width:959px){
  .nh-burger{display:inline-flex}
  .nh-actions{display:none}
  .nh-tier--nav{border-top:0}
  .nh-nav{
    position:fixed;left:0;right:0;top:var(--nh-header-h,72px);bottom:0;z-index:95;
    display:flex;flex-direction:column;align-items:stretch;
    padding:clamp(18px,4vw,32px) clamp(20px,6vw,44px) 36px;
    overflow-y:auto;
    background:
      radial-gradient(120% 55% at 84% 0%,rgba(139,92,246,.34),transparent 62%),
      radial-gradient(95% 50% at 6% 100%,rgba(34,224,214,.22),transparent 62%),
      linear-gradient(180deg,#081226,#040914);
    opacity:0;visibility:hidden;transform:translateY(-14px);
    transition:opacity .3s ease,transform .42s cubic-bezier(.22,.68,.31,1),visibility .3s ease;
  }
  .nh-nav[data-open]{opacity:1;visibility:visible;transform:none}
  .nh-nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nh-nav__item{border-bottom:1px solid rgba(127,243,234,.12)}
  .nh-nav__link{width:100%;justify-content:flex-start;padding:19px 4px;font-size:1.06rem;letter-spacing:.04em}
  .nh-nav__link::after{display:none}
  .nh-nav__link[aria-current="page"]{color:var(--nh-cyan)}
  .nh-nav__num{font-size:.7rem}
  .nh-nav__foot{display:flex;flex-direction:column;gap:12px;margin-top:auto;padding-top:30px}
  .nh-nav__footlinks{display:flex;justify-content:center;gap:24px;padding-top:8px}
}

/* ---------- 10. 页脚 ---------- */
.nh-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(64px,9vw,132px);
  background:linear-gradient(180deg,#050D1C 0%,var(--nh-coal) 62%);
  border-top:1px solid var(--nh-line);
  color:var(--nh-mute);
}
.nh-footer__rail{
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--nh-cyan),var(--nh-violet),var(--nh-gold),transparent);
  opacity:.75;
}
.nh-footer__inner{
  position:relative;
  display:grid;gap:clamp(30px,4vw,56px);
  grid-template-columns:1fr;
  padding:clamp(46px,6vw,80px) 0 clamp(30px,4vw,46px);
}
.nh-footer__lead{display:grid;gap:18px;align-content:start}
.nh-footer__note{font-size:.92rem;line-height:1.9;color:#93A6C6;max-width:34ch}
.nh-footer__chips{display:flex;flex-wrap:wrap;gap:8px}
.nh-footer__grid{display:grid;gap:clamp(24px,3vw,40px);grid-template-columns:1fr}
.nh-footer__title{
  position:relative;margin-bottom:16px;padding-left:14px;
  font-family:var(--nh-font-mono);font-size:.7rem;font-weight:500;letter-spacing:.24em;
  color:rgba(245,196,81,.88);
}
.nh-footer__title::before{
  content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;border-radius:50%;
  background:var(--nh-cyan);box-shadow:0 0 12px rgba(34,224,214,.9);
}
.nh-footer__list{display:grid;gap:10px}
.nh-footer__link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.92rem;color:#C3D2EA;
  transition:color .22s ease,transform .22s ease;
}
.nh-footer__link:hover{color:var(--nh-cyan);transform:translateX(4px)}
.nh-contact{display:grid;gap:12px}
.nh-contact__row{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;
  padding:10px 12px;border-radius:14px;
  background:rgba(17,33,74,.55);border:1px solid var(--nh-line-soft);
}
.nh-contact__key{font-family:var(--nh-font-mono);font-size:.66rem;letter-spacing:.18em;color:var(--nh-cyan)}
.nh-contact__val{font-size:.85rem;color:var(--nh-fog);word-break:break-all;line-height:1.6}
.nh-footer__tip{margin-top:14px;font-size:.8rem;line-height:1.85;color:#7F90B0;max-width:38ch}
.nh-footer__base{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 26px;
  padding:20px 0 30px;border-top:1px solid var(--nh-line-soft);
  font-size:.78rem;color:#7F90B0;
}
.nh-footer__copy{margin-right:auto}
.nh-footer__legal{display:flex;flex-wrap:wrap;gap:18px}
.nh-footer__icp{color:#7F90B0}

@media(min-width:700px){
  .nh-footer__inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nh-footer__lead{grid-column:1/-1}
  .nh-footer__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(min-width:1060px){
  .nh-footer__inner{grid-template-columns:minmax(240px,1fr) minmax(0,1.7fr) minmax(250px,.95fr)}
  .nh-footer__lead{grid-column:auto}
}

/* ---------- 11. 动效 / 焦点 / 无障碍 ---------- */
:where(a,button,[tabindex],summary):focus-visible{
  outline:2px solid var(--nh-cyan);
  outline-offset:3px;
  border-radius:6px;
}
[data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .62s ease,transform .62s cubic-bezier(.22,.68,.31,1);
  transition-delay:var(--nh-delay,0ms);
  will-change:opacity,transform;
}
[data-reveal].is-visible{opacity:1;transform:none}

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