/* ============================================================
   HALO — 军工软件 · 深空指挥控制 HUD
   Palette: near-black · phosphor cyan · amber warnings · dim grid
   Type: Noto Sans SC (display) · JetBrains Mono (telemetry)
   ============================================================ */
:root{
  --bg:#0b1420;
  --bg-2:#0e1a2a;
  --panel:#111d2e;
  --panel-2:#162338;
  --cyan:#4de8ff;
  --cyan-deep:#1f7f95;
  --amber:#ffb020;
  --amber-deep:#a8710f;
  --ink:#e8f2f7;
  --dim:#9fb6c4;
  --faint:#758ea0;
  --line:rgba(77,232,255,.16);
  --line-soft:rgba(77,232,255,.08);
  --grid:rgba(77,232,255,.045);
  --glow:0 0 10px rgba(77,232,255,.45);
  --glow-soft:0 0 20px rgba(77,232,255,.22);
  --amber-glow:0 0 10px rgba(255,176,32,.5);
  --max:1360px;
  --ease:cubic-bezier(.22,1,.30,1);
  --mono:"JetBrains Mono","Noto Sans SC",ui-monospace,monospace;
  --disp:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--disp);font-weight:400;line-height:1.5;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-weight:600;line-height:1;letter-spacing:.005em}
::selection{background:var(--cyan);color:#04070d;text-shadow:none}

/* ---------- background layers ---------- */
.bg-grid,.bg-scan,.bg-vignette{position:fixed;inset:0;pointer-events:none;z-index:0}
.bg-grid{
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 50% 42%,#000 0%,#000 42%,transparent 88%);
  -webkit-mask-image:radial-gradient(circle at 50% 42%,#000 0%,#000 42%,transparent 88%);
}
.bg-scan{
  background:repeating-linear-gradient(0deg,rgba(77,232,255,.028) 0 1px,transparent 1px 3px);
  opacity:.5;mix-blend-mode:screen;animation:scan 8s linear infinite;
}
@keyframes scan{to{background-position:0 300px}}
.bg-vignette{
  background:
    radial-gradient(120% 90% at 50% -8%,rgba(77,232,255,.06),transparent 60%),
    radial-gradient(100% 100% at 50% 120%,rgba(255,176,32,.04),transparent 55%),
    radial-gradient(80% 80% at 50% 50%,transparent 40%,rgba(0,0,0,.55) 100%);
}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px clamp(24px,5vw,72px) 16px clamp(16px,3.4vw,40px);
  font-family:var(--mono);
  background:linear-gradient(var(--bg),rgba(11,20,32,.4) 70%,transparent);
  border-bottom:1px solid transparent;transition:border-color .4s,background .4s;
}
.nav.scrolled{background:rgba(11,20,32,.86);border-bottom-color:var(--line);backdrop-filter:blur(8px)}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--disp);font-weight:700;
  font-size:1.3rem;letter-spacing:.1em}
.brand-logo{height:38px;width:auto;display:block;object-fit:contain}
@keyframes spin-mark{to{transform:rotate(360deg)}}
.brand-txt b{color:var(--cyan);font-weight:700}
.nav-links{display:flex;gap:clamp(14px,2.2vw,30px);align-items:center;
  font-size:.95rem;letter-spacing:.08em;color:var(--dim)}
.nav-links a{position:relative;padding:4px 0;transition:color .25s}
.nav-links a:hover{color:var(--cyan)}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:1px;
  background:var(--cyan);box-shadow:var(--glow);transition:right .3s var(--ease)}
.nav-links a:hover::after{right:0}
.nav-clock{display:flex;align-items:center;gap:8px;font-size:.72rem;letter-spacing:.1em;color:var(--dim)}
.clk-utc{color:var(--cyan);text-shadow:var(--glow-soft);font-variant-numeric:tabular-nums;min-width:9ch}
.clk-sep{color:var(--faint)}
.clk-phase{color:var(--dim)}
@media(max-width:760px){.nav-clock{display:none}}
@media(max-width:520px){.nav-links a[href="#log"]{display:none}}

/* ---------- shared section chrome ---------- */
main{position:relative;z-index:1}
section{padding:clamp(64px,10vh,140px) clamp(16px,4vw,48px);position:relative}
.sec-head{max-width:var(--max);margin:0 auto clamp(36px,5vw,64px)}
.kicker{font-family:var(--mono);font-size:.74rem;letter-spacing:.28em;color:var(--cyan);
  text-shadow:var(--glow-soft);margin-bottom:1.1rem}
h2{font-family:var(--disp);font-weight:600;font-size:clamp(1.9rem,5.2vw,3.6rem);
  line-height:1.02;letter-spacing:-.01em;max-width:18ch}
.sec-note{margin-top:1.2rem;max-width:58ch;color:var(--dim);font-size:clamp(1rem,1.4vw,1.14rem);font-weight:400}

/* 居中变体：标题与介绍居中 */
.sec-head.center{text-align:center}
.sec-head.center h2{margin-left:auto;margin-right:auto}
.sec-head.center .sec-note{margin-left:auto;margin-right:auto}

/* ============================================================
   HERO
   ============================================================ */
.hero{min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:clamp(90px,12vh,120px) clamp(16px,4vw,48px) clamp(48px,7vh,72px);position:relative}
.hero-inner{width:100%;max-width:var(--max);margin:0 auto;
  border:1px solid var(--line);border-radius:14px;
  background:linear-gradient(160deg,rgba(8,14,24,.6),rgba(5,9,15,.35));
  box-shadow:inset 0 0 60px rgba(77,232,255,.04),0 30px 80px -40px rgba(0,0,0,.8);
  overflow:hidden;position:relative}
.hero-inner::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(90deg,var(--cyan),transparent 12%) top left/100% 2px no-repeat}

.console-top{display:flex;align-items:center;gap:clamp(10px,2vw,26px);flex-wrap:wrap;
  padding:12px clamp(16px,2.4vw,26px);border-bottom:1px solid var(--line-soft);
  font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;color:var(--dim)}
.ct-id i{color:var(--ink);font-style:normal}
.ct-build{color:var(--faint)}
.ct-status{margin-left:auto;display:inline-flex;align-items:center;gap:8px;
  color:var(--cyan);text-shadow:var(--glow-soft)}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:var(--glow);
  animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.7)}}

.hero-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(480px,1.4fr);
  gap:clamp(24px,3vw,48px);align-items:center;
  padding:clamp(24px,3vw,46px) clamp(18px,2.6vw,34px) clamp(28px,3.4vw,48px)}

/* hero identity */
.eyebrow{font-family:var(--mono);font-size:.74rem;letter-spacing:.24em;text-transform:uppercase;
  color:var(--dim);margin-bottom:1.1rem}
.wordmark{display:flex;align-items:baseline;gap:.24em;flex-wrap:wrap;
  font-family:var(--disp);font-weight:700;
  font-size:clamp(3.4rem,9vw,6.4rem);line-height:.86;letter-spacing:-.01em}
.wordmark .w1{color:var(--ink)}
.wordmark .w2{color:transparent;-webkit-text-stroke:1.6px var(--cyan);
  text-shadow:0 0 24px rgba(77,232,255,.4)}
.tagline{margin-top:.7rem;font-family:var(--mono);font-size:clamp(.9rem,1.5vw,1.06rem);
  letter-spacing:.06em;color:var(--cyan);text-shadow:var(--glow-soft)}
.lede{margin-top:1.3rem;max-width:40ch;color:var(--dim);font-weight:400;
  font-size:clamp(.98rem,1.2vw,1.08rem)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:1.7rem}
.btn{font-family:var(--mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;
  padding:12px 20px;border-radius:7px;border:1px solid var(--line);transition:.25s var(--ease);cursor:pointer}
.btn-primary{background:rgba(77,232,255,.1);border-color:var(--cyan);color:var(--cyan);text-shadow:var(--glow-soft)}
.btn-primary:hover{background:var(--cyan);color:#04070d;text-shadow:none;box-shadow:var(--glow)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.lead-vitals{display:flex;gap:clamp(14px,2vw,26px);margin-top:1.8rem;flex-wrap:wrap}
.lead-vitals div{display:flex;flex-direction:column;gap:3px}
.lead-vitals dt{font-family:var(--mono);font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;color:var(--faint)}
.lead-vitals dd{font-family:var(--mono);font-size:1rem;color:var(--ink);font-variant-numeric:tabular-nums}

/* ---------- the HUD stage ---------- */
.stage-wrap{display:flex;justify-content:center;align-items:center;width:100%}
.stage{position:relative;width:100%;aspect-ratio:1/1;max-width:540px;color:var(--cyan-deep)}
.hud-canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hud-frame{position:absolute;inset:0;width:100%;height:100%;color:rgba(77,232,255,.32);overflow:visible}
.hf-corners{filter:drop-shadow(0 0 3px rgba(77,232,255,.5))}
.hf-cross{stroke-dasharray:2 5;opacity:.55}
.hf-ret{opacity:.7}
.hf-t{font-family:var(--mono);font-size:18px;letter-spacing:2.5px;fill:rgba(77,232,255,.6)}
.stage-tag{position:absolute;font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;
  display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border:1px solid var(--line);
  border-radius:4px;background:rgba(11,20,32,.7);color:var(--cyan);text-shadow:var(--glow-soft);white-space:nowrap}
.stage-tag i{width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:var(--glow)}
.stage-tag-craft{top:11%;right:4%}
.stage-tag-craft b{color:var(--ink);margin-left:2px}
.stage-tag-lock{bottom:12%;left:3%;color:var(--amber);border-color:rgba(255,176,32,.4);text-shadow:var(--amber-glow)}
.stage-tag-lock i{background:var(--amber);box-shadow:var(--amber-glow);animation:pulse 1.4s ease-in-out infinite}

/* ---------- primary telemetry column ---------- */
.tele-col{display:flex;flex-direction:column;gap:12px}
.tele{border:1px solid var(--line-soft);border-radius:8px;padding:11px 13px;
  background:linear-gradient(rgba(77,232,255,.03),transparent);position:relative;overflow:hidden}
.tele::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--cyan);
  box-shadow:var(--glow);opacity:.7}
.tele-label{display:block;font-family:var(--mono);font-size:.64rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--dim);margin-bottom:5px}
.tele-label b{color:var(--cyan);font-weight:500}
.tele-value{display:flex;align-items:baseline;gap:5px;font-family:var(--disp);font-weight:600}
.tele-value b{font-size:1.5rem;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.tele-value i{font-family:var(--mono);font-size:.7rem;font-style:normal;color:var(--dim)}
.tele-bar{display:block;height:3px;margin-top:8px;background:rgba(77,232,255,.1);border-radius:3px;overflow:hidden}
.tele-fill{display:block;height:100%;width:60%;background:var(--cyan);box-shadow:var(--glow);
  transition:width .6s var(--ease)}
.tele-stream::before{background:var(--amber);box-shadow:var(--amber-glow)}
.tele-stream .tele-label b{color:var(--amber)}
.stream-canvas{display:block;width:100%;height:52px;margin-top:6px}

/* scroll cue */
.scroll-cue{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);
  font-family:var(--mono);font-size:.64rem;letter-spacing:.24em;color:var(--dim);
  display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-cue span{width:1px;height:28px;background:linear-gradient(var(--cyan),transparent);
  animation:cue 2s ease-in-out infinite}
@keyframes cue{0%,100%{transform:scaleY(.4);opacity:.4}50%{transform:scaleY(1);opacity:1}}
.scroll-cue:hover{color:var(--cyan)}

/* ============================================================
   SUBSYSTEMS
   ============================================================ */
.sub-grid{max-width:var(--max);margin:0 auto;display:grid;
  grid-template-columns:repeat(4,1fr);gap:clamp(12px,1.4vw,18px)}
.sub{border:1px solid var(--line-soft);border-radius:12px;padding:clamp(16px,1.6vw,22px);
  background:linear-gradient(165deg,rgba(10,18,32,.7),rgba(5,9,15,.5));position:relative;
  overflow:hidden;transition:border-color .35s,transform .35s var(--ease),box-shadow .35s}
.sub::after{content:"";position:absolute;inset:0;pointer-events:none;border-radius:12px;
  box-shadow:inset 0 0 40px rgba(77,232,255,.05)}
.sub:hover{transform:translateY(-4px);border-color:var(--line);box-shadow:0 24px 50px -30px rgba(77,232,255,.4)}
.sub-head{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;margin-bottom:6px}
.sub-idx{font-family:var(--mono);font-size:.64rem;letter-spacing:.14em;color:var(--faint)}
.sub-name{font-family:var(--disp);font-weight:600;font-size:1.14rem;color:var(--ink)}
.sub-state{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;padding:3px 8px;border-radius:4px;
  border:1px solid var(--cyan);color:var(--cyan);text-shadow:var(--glow-soft);white-space:nowrap}
.sub[data-state="warn"] .sub-state{border-color:var(--amber);color:var(--amber);text-shadow:var(--amber-glow)}
.sub[data-state="warn"] .sub-name{color:var(--amber)}
.gauge{display:block;width:100%;height:132px;margin:6px 0 10px}
.sub-desc{color:var(--dim);font-weight:400;font-size:.9rem;min-height:5.4em;line-height:1.5}
.sub-specs{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px;
  padding-top:12px;border-top:1px solid var(--line-soft)}
.sub-specs dt{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:3px}
.sub-specs dd{font-family:var(--mono);font-size:.92rem;color:var(--ink);font-variant-numeric:tabular-nums}

/* ============================================================
   MISSION LOG
   ============================================================ */
.terminal{max-width:var(--max);margin:0 auto;border:1px solid var(--line);border-radius:12px;
  background:linear-gradient(rgba(8,14,24,.8),rgba(11,20,32,.9));overflow:hidden;
  box-shadow:inset 0 0 60px rgba(77,232,255,.04)}
.term-bar{display:flex;align-items:center;gap:8px;padding:11px 16px;border-bottom:1px solid var(--line-soft);
  font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;color:var(--dim)}
.tb-title{margin-left:8px}
.tb-clock{margin-left:auto;color:var(--cyan);text-shadow:var(--glow-soft);font-variant-numeric:tabular-nums}
.log-list{list-style:none;max-height:min(52vh,440px);overflow-y:auto;padding:6px 0}
.log-list::-webkit-scrollbar{width:8px}
.log-list::-webkit-scrollbar-thumb{background:rgba(77,232,255,.18);border-radius:8px}
.log-row{display:grid;grid-template-columns:auto auto 1fr;gap:clamp(10px,1.6vw,22px);align-items:baseline;
  padding:9px clamp(16px,2.4vw,26px);font-family:var(--mono);font-size:.82rem;
  border-bottom:1px solid var(--line-soft);color:var(--dim)}
.log-row:hover{background:rgba(77,232,255,.04)}
.log-t{color:var(--cyan);text-shadow:var(--glow-soft);white-space:nowrap;font-variant-numeric:tabular-nums}
.log-tag{color:var(--ink);letter-spacing:.06em;min-width:5ch}
.log-tag[data-lv="warn"]{color:var(--amber);text-shadow:var(--amber-glow)}
.log-msg{color:var(--dim)}
.log-msg b{color:var(--ink);font-weight:500}
.log-row.fresh{animation:logIn .5s var(--ease)}
@keyframes logIn{from{opacity:0;transform:translateY(-6px);background:rgba(77,232,255,.1)}to{opacity:1;transform:none}}
@media(max-width:600px){
  .log-row{grid-template-columns:auto 1fr;gap:8px 12px}
  .log-msg{grid-column:1/-1}
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{padding:clamp(48px,7vw,80px) clamp(16px,4vw,48px);border-top:1px solid var(--line);
  background:linear-gradient(transparent,rgba(77,232,255,.03));position:relative;z-index:1}
.foot-inner{max-width:var(--max);margin:0 auto}
.foot-grid{display:grid;grid-template-columns:1fr 1fr 1fr 1.2fr;gap:clamp(24px,3vw,48px)}
.foot-col{display:flex;flex-direction:column;gap:14px}
.foot-logo{font-family:var(--disp);font-weight:700;font-size:1.35rem;letter-spacing:.06em;color:var(--ink)}
.foot-sub{color:var(--dim);font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase}
.foot-title{color:var(--cyan);font-size:.95rem;font-weight:600;letter-spacing:.04em}
.foot-links{list-style:none;display:flex;flex-direction:column;gap:10px}
.foot-links a{color:var(--dim);font-size:.92rem}
.foot-links a:hover{color:var(--cyan)}
.foot-contact{list-style:none;display:flex;flex-direction:column;gap:10px;color:var(--dim);font-size:.92rem}
.foot-contact a{color:var(--dim)}
.foot-contact a:hover{color:var(--cyan)}
.foot-subscribe{display:flex;gap:8px}
.foot-subscribe input{flex:1;background:var(--panel);border:1px solid var(--line);border-radius:7px;
  color:var(--ink);padding:10px 12px;font-size:.9rem;min-width:0}
.foot-subscribe input:focus{outline:none;border-color:var(--cyan)}
.foot-subscribe button{background:rgba(77,232,255,.1);border:1px solid var(--cyan);color:var(--cyan);
  border-radius:7px;padding:10px 16px;font-size:.85rem;cursor:pointer;white-space:nowrap}
.foot-subscribe button:hover{background:var(--cyan);color:#04070d}
.foot-note{color:var(--faint);font-size:.82rem;line-height:1.6}
.foot-bottom{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin-top:clamp(32px,4vw,52px);
  padding-top:1.4rem;border-top:1px solid var(--line-soft)}
.foot-copy{font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;color:var(--faint)}
@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}

/* ============================================================
   REVEALS — JS-gated. Reveal rule MUST out-specify the hide rule.
   ============================================================ */
.js .reveal{opacity:0;transform:translateY(34px)}
.js .reveal.is-in{opacity:1;transform:none;transition:opacity .9s var(--ease),transform .9s var(--ease)}

/* hero intro — compositor-driven via .loaded */
.js .hero-inner{opacity:0;transform:translateY(24px) scale(.99);
  transition:opacity 1s var(--ease),transform 1.1s var(--ease)}
.js .hero.loaded .hero-inner{opacity:1;transform:none}
.js .console-top,.js .hero-lead>*,.js .tele-col>*,.js .stage-wrap{opacity:0;transform:translateY(18px);
  transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .hero.loaded .console-top{opacity:1;transform:none;transition-delay:.15s}
.js .hero.loaded .hero-lead>*{opacity:1;transform:none}
.js .hero.loaded .hero-lead>*:nth-child(1){transition-delay:.24s}
.js .hero.loaded .hero-lead>*:nth-child(2){transition-delay:.32s}
.js .hero.loaded .hero-lead>*:nth-child(3){transition-delay:.40s}
.js .hero.loaded .hero-lead>*:nth-child(4){transition-delay:.48s}
.js .hero.loaded .hero-lead>*:nth-child(5){transition-delay:.56s}
.js .hero.loaded .hero-lead>*:nth-child(6){transition-delay:.64s}
.js .hero.loaded .stage-wrap{opacity:1;transform:none;transition-delay:.34s;transition-duration:1.1s}
.js .hero.loaded .tele-col>*{opacity:1;transform:none}
.js .hero.loaded .tele-col>*:nth-child(1){transition-delay:.5s}
.js .hero.loaded .tele-col>*:nth-child(2){transition-delay:.58s}
.js .hero.loaded .tele-col>*:nth-child(3){transition-delay:.66s}
.js .hero.loaded .tele-col>*:nth-child(4){transition-delay:.74s}
.js .hero.loaded .tele-col>*:nth-child(5){transition-delay:.82s}

/* ---------- focus ---------- */
a:focus-visible,.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:4px;border-radius:4px}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:clamp(24px,4vw,40px)}
  .hero-lead{text-align:left}
  .stage{max-width:min(88vw,480px);margin:0 auto}
  .tele-col{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
  .tele-stream{grid-column:1/-1}
  .sub-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .hero-inner{border-radius:10px}
  .tele-col{grid-template-columns:1fr 1fr}
  .sub-grid{grid-template-columns:1fr}
  .sub-desc{min-height:0}
  .wordmark{font-size:clamp(3rem,17vw,5rem)}
}
@media(max-width:380px){
  .tele-col{grid-template-columns:1fr}
}

/* ============================================================
   REDUCED MOTION — freeze all motion, force content visible
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .bg-scan{display:none}
  .js .reveal,.js .reveal.is-in,
  .js .hero-inner,.js .console-top,.js .hero-lead>*,.js .tele-col>*,.js .stage-wrap{
    opacity:1!important;transform:none!important}
  .scroll-cue span{opacity:.6}
}


/* ============================================================
   HALO — CMS 扩展样式 (文章正文/分页/表单/导航)
   ============================================================ */

/* 导航激活态 */
.nav-links a.active{color:var(--cyan);text-shadow:var(--glow-soft)}

/* ---------- 汉堡按钮（桌面隐藏） ---------- */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:9px;border:1px solid var(--line);border-radius:8px;
  background:rgba(77,232,255,.06);cursor:pointer;flex-shrink:0}
.nav-toggle-bar{display:block;width:100%;height:2px;border-radius:2px;
  background:var(--cyan);box-shadow:var(--glow-soft);transition:transform .3s var(--ease),opacity .2s}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 移动端导航：抽屉式 ---------- */
@media(max-width:760px){
  .nav{padding:10px clamp(14px,3.4vw,24px)}
  .brand{font-size:1.05rem;gap:8px}
  .brand-logo{height:32px}
  .nav-toggle{display:flex}
  .nav-clock{display:none}
  .nav-links{position:fixed;top:57px;left:0;right:0;z-index:59;
    flex-direction:column;align-items:stretch;gap:0;
    padding:8px 14px 18px;margin:0;
    background:rgba(9,16,26,.97);border-bottom:1px solid var(--line);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    transform:translateY(-8px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility 0s .28s;
    max-height:calc(100vh - 57px);overflow-y:auto}
  .nav-links.open{transform:none;opacity:1;visibility:visible;pointer-events:auto;transition-delay:0s}
  .nav-links a{padding:13px 6px;font-size:.95rem;border-bottom:1px solid var(--line-soft)}
  .nav-links a:last-child{border-bottom:none}
  .nav-links a::after{display:none}
  .nav-links a.active{border-left:2px solid var(--cyan);padding-left:12px}
}
@media(max-width:380px){
  .brand{font-size:.95rem}
  .brand-logo{height:28px}
}

/* 文章正文（富文本） */
.article-content{color:var(--ink);line-height:1.9;font-size:1.02rem}
.article-content h1,.article-content h2,.article-content h3,.article-content h4{color:var(--ink);margin:1.4em 0 .6em;line-height:1.3}
.article-content h1{font-size:1.6em}.article-content h2{font-size:1.4em}.article-content h3{font-size:1.2em}
.article-content h2{border-left:3px solid var(--cyan);padding-left:12px}
.article-content p{margin:.9em 0}
.article-content a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{text-shadow:var(--glow-soft)}
.article-content ul,.article-content ol{margin:.9em 0;padding-left:1.6em}
.article-content li{margin:.35em 0}
.article-content blockquote{border-left:3px solid var(--line);background:rgba(77,232,255,.04);margin:1.2em 0;padding:.8em 1.2em;color:var(--dim)}
.article-content code{font-family:var(--mono);background:rgba(77,232,255,.08);color:var(--cyan);padding:.15em .45em;border-radius:4px;font-size:.9em}
.article-content pre{background:var(--panel);border:1px solid var(--line-soft);border-radius:8px;padding:1em;overflow:auto;margin:1.2em 0}
.article-content pre code{background:none;padding:0}
.article-content img{max-width:100%;height:auto;border-radius:8px;border:1px solid var(--line-soft);cursor:zoom-in}
/* 正文段落内连续多图：一行 2 张；单图占一行 */
.article-content p:has(img + img){display:flex;gap:12px;align-items:stretch}
.article-content p:has(img + img) img{width:calc(50% - 6px);max-width:calc(50% - 6px);height:260px;object-fit:cover;object-position:center}
.article-content table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:.95em;display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}
.article-content th,.article-content td{border:1px solid var(--line);padding:.6em .8em;text-align:left}
.article-content th{background:rgba(77,232,255,.06);color:var(--cyan);font-weight:600}
.article-content tr:nth-child(even) td{background:rgba(77,232,255,.02)}
.article-content hr{border:none;border-top:1px solid var(--line);margin:1.6em 0}

/* 文章图片列表/视频/附件 */
.article-images{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-bottom:1.4em}
.article-images.single{grid-template-columns:1fr}
.article-fig{margin:0}
.article-fig img{width:100%;border-radius:8px;border:1px solid var(--line-soft)}
.article-fig figcaption{color:var(--dim);font-size:.85em;text-align:center;margin-top:.5em}
.article-video{margin:1.4em 0}
.article-files{margin-top:1.6em;padding-top:1em;border-top:1px solid var(--line-soft)}
.files-head{color:var(--cyan);font-size:1.05em;margin-bottom:.6em}
.article-files ul{list-style:none;padding:0}
.article-files li{margin:.4em 0}
.article-files a{color:var(--ink);text-decoration:none;border:1px solid var(--line);padding:.4em .8em;border-radius:6px;display:inline-block;transition:.2s}
.article-files a:hover{color:var(--cyan);border-color:var(--cyan)}

/* 分页 */
.pagination{display:inline-flex;flex-wrap:wrap;gap:8px;justify-content:center}
nav.pagination{display:flex}
.page-link{display:inline-block;min-width:38px;height:38px;line-height:36px;text-align:center;
  border:1px solid var(--line);border-radius:6px;color:var(--ink);font-family:var(--mono);font-size:.85rem;transition:.2s}
.page-link:hover{color:var(--cyan);border-color:var(--cyan)}
.page-link.active{background:rgba(77,232,255,.12);border-color:var(--cyan);color:var(--cyan);text-shadow:var(--glow-soft)}
.page-link.disabled{opacity:.35;pointer-events:none}

/* 联系表单 + 信息 */
.contact-h{color:var(--cyan);font-size:1.15em;margin-bottom:1.1em;letter-spacing:.05em}
.contact-list{display:flex;flex-direction:column;gap:18px}
.contact-list div{display:flex;gap:16px;align-items:baseline}
.contact-list dt{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;color:var(--faint);min-width:64px}
.contact-list dd{color:var(--ink)}
.contact-list a{color:var(--cyan)}
.contact-form{display:flex;flex-direction:column;gap:14px}
.contact-form input,.contact-form textarea{background:var(--panel);border:1px solid var(--line);border-radius:7px;
  color:var(--ink);padding:12px 14px;font-family:var(--disp);font-size:.95rem;width:100%}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--cyan);box-shadow:var(--glow-soft)}
.contact-form textarea{min-height:120px;resize:vertical}

/* 产品子系统卡片在窄屏折叠 */
@media(max-width:900px){
  .sub-grid{grid-template-columns:repeat(2,1fr)}
  .contact-form-wrap,.article-content[style*="grid-template-columns"]{grid-template-columns:1fr!important}
}
@media(max-width:560px){
  .sub-grid{grid-template-columns:1fr}
}


/* ============================================================
   产品 / 案例 图文卡片 (图+标题+描述)
   ============================================================ */
.product-grid{
  max-width:var(--max);margin:0 auto;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,340px));
  justify-content:center;
  gap:clamp(16px,2vw,26px)
}
.product-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:12px;
  border:1px solid var(--line-soft);
  background:linear-gradient(165deg,rgba(10,18,32,.72),rgba(5,9,15,.55));
  transition:border-color .35s,transform .35s var(--ease),box-shadow .35s
}
.product-card:hover{
  transform:translateY(-5px);border-color:var(--cyan);
  box-shadow:0 24px 50px -30px rgba(77,232,255,.45)
}
.product-thumb{
  position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--panel);
  border-radius:12px 12px 0 0
}
.product-thumb img{
  width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .5s var(--ease);border-radius:12px 12px 0 0
}
.product-card:hover .product-thumb img{transform:scale(1.06)}
.product-thumb::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 55%,rgba(11,20,32,.55))
}
.product-thumb-empty{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:2.6rem;color:var(--cyan);text-shadow:var(--glow-soft)
}
.product-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.product-title{
  font-family:var(--disp);font-weight:600;font-size:1.12rem;line-height:1.3;color:var(--ink)
}
.product-desc{color:var(--dim);font-size:.92rem;line-height:1.6;flex:1;min-height:2.6em;
  text-indent:2em}
.product-more{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;color:var(--cyan);
  text-shadow:var(--glow-soft)
}
.product-card:hover .product-more{text-shadow:var(--glow)}


/* ============================================================
   公司动态 (左大图 + 右列表)  +  服务对象
   ============================================================ */
.news-grid{
  max-width:1080px;margin:0 auto;display:grid;
  grid-template-columns:1.9fr 1fr;gap:clamp(16px,2vw,28px);align-items:stretch
}
.news-feature{
  display:flex;flex-direction:column;overflow:hidden;border-radius:14px;
  border:1px solid var(--line-soft);
  background:linear-gradient(165deg,rgba(10,18,32,.72),rgba(5,9,15,.55));
  transition:border-color .35s,transform .35s var(--ease),box-shadow .35s
}
.news-feature:hover{transform:translateY(-5px);border-color:var(--cyan);
  box-shadow:0 24px 50px -30px rgba(77,232,255,.45)}
.news-feature-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--panel)}
.news-feature-thumb img{width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .5s var(--ease)}
.news-feature:hover .news-feature-thumb img{transform:scale(1.05)}
.news-feature-thumb::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 55%,rgba(11,20,32,.6))}
.news-feature-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:2.6rem;color:var(--cyan)}
.news-feature-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-feature-title{font-family:var(--disp);font-weight:600;font-size:1.15rem;line-height:1.35;color:var(--ink)}
.news-feature-desc{color:var(--dim);font-size:.95rem;line-height:1.7}
.news-feature-meta{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--faint)}
.news-list{display:flex;flex-direction:column;border-radius:14px;overflow:hidden;
  border:1px solid var(--line-soft);
  background:linear-gradient(165deg,rgba(10,18,32,.72),rgba(5,9,15,.55))}
.news-item{display:flex;align-items:center;gap:12px;padding:11px 14px;
  border-bottom:1px solid var(--line-soft);transition:background .25s}
.news-item:last-child{border-bottom:none}
.news-item:hover{background:rgba(77,232,255,.04)}
.news-item-date{font-family:var(--mono);font-size:.72rem;color:var(--faint);white-space:nowrap;flex-shrink:0}
.news-item-title{color:var(--ink);font-size:.92rem;line-height:1.5;overflow:hidden;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.news-item:hover .news-item-title{color:var(--cyan)}
.client-grid{max-width:var(--max);margin:0 auto;display:grid;
  grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,26px)}
.client-item{overflow:hidden;border-radius:12px;border:1px solid var(--line-soft);
  background:var(--panel);transition:border-color .35s,transform .35s var(--ease)}
.client-item:hover{transform:translateY(-4px);border-color:var(--cyan)}
.client-item img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:16/10}
@media(max-width:860px){.news-grid{grid-template-columns:1fr}.client-grid{grid-template-columns:1fr}}

.news-more{display:block;text-align:center;margin-top:auto;padding:11px;font-family:var(--mono);
  font-size:.74rem;letter-spacing:.1em;color:var(--cyan);border-top:1px solid var(--line-soft);
  background:rgba(77,232,255,.04);transition:.25s}
.news-more:hover{background:rgba(77,232,255,.1);text-shadow:var(--glow-soft)}
.news-list{display:flex;flex-direction:column}

/* 核心指标卡片 */
.stat-card .sub-head{gap:8px}
.stat-icon{width:22px;height:22px;color:var(--cyan);text-shadow:var(--glow-soft);flex-shrink:0}
.stat-value{font-family:var(--disp);font-weight:700;font-size:2.2rem;color:var(--cyan);
  text-shadow:var(--glow-soft);margin-top:8px;font-variant-numeric:tabular-nums}


/* 列表框内分页 */
.news-pagebar{margin-top:auto;padding:10px 12px;border-top:1px solid var(--line-soft)}
.news-pagebar .pagination{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.news-pagebar .page-link{min-width:30px;height:30px;line-height:28px;font-size:.78rem}

/* 核心指标大图标 */
.stat-icon{width:40px;height:40px;stroke-width:1.4}
.stat-card .sub-head{display:flex;flex-direction:column;align-items:flex-start;gap:10px}

/* 详情页顶部返回导航 */
.article-topbar{max-width:var(--max);margin:0 auto clamp(18px,2.4vw,28px);display:flex;align-items:center;gap:10px;
  flex-wrap:wrap;font-family:var(--mono);font-size:.82rem;color:var(--dim)}
.article-topbar a{color:var(--dim);transition:color .2s}
.article-topbar a:hover{color:var(--cyan)}
.article-topbar .sep{color:var(--faint)}
.article-topbar .current{color:var(--ink);font-weight:500}

/* ============================================================
   新闻列表 (ujcms 示例站排版：缩略图+标题+摘要+元信息)
   ============================================================ */
.article-list{list-style:none;max-width:var(--max);margin:0 auto;display:flex;flex-direction:column}
.article-list-item{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line-soft)}
.article-list-thumb{flex-shrink:0;width:180px;aspect-ratio:16/10;overflow:hidden;border-radius:8px;
  border:1px solid var(--line-soft);background:var(--panel)}
.article-list-thumb img{width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .4s var(--ease)}
.article-list-item:hover .article-list-thumb img{transform:scale(1.06)}
.article-list-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px}
.article-list-title a{font-family:var(--disp);font-weight:600;font-size:1.08rem;line-height:1.4;color:var(--ink)}
.article-list-title a:hover{color:var(--cyan)}
.article-list-desc{color:var(--dim);font-size:.92rem;line-height:1.6;overflow:hidden;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.article-list-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:auto;
  font-family:var(--mono);font-size:.72rem;color:var(--faint)}
.article-list-path a{color:var(--faint)}
.article-list-path a:hover{color:var(--cyan)}
.article-list-views{color:var(--faint)}
.article-list-date{margin-left:auto}
@media(max-width:640px){.article-list-thumb{width:120px}.article-list-desc{display:none}}

/* ============================================================
   频道页左右两栏 (左列表 + 右热点)
   ============================================================ */
.channel-grid{max-width:var(--max);margin:0 auto;display:grid;
  grid-template-columns:minmax(0,2fr) minmax(280px,1fr);gap:clamp(24px,3vw,44px);align-items:start}
.channel-main{min-width:0}
.channel-aside{position:sticky;top:96px}
.aside-panel{border:1px solid var(--line-soft);border-radius:12px;overflow:hidden;
  background:linear-gradient(165deg,rgba(10,18,32,.72),rgba(5,9,15,.55))}
.aside-title{display:flex;align-items:center;gap:10px;padding:14px 18px;border-bottom:1px solid var(--line-soft);
  font-family:var(--disp);font-weight:600;font-size:1rem;color:var(--ink)}
.aside-list{list-style:none;padding:8px 0}
.aside-item{display:flex;align-items:flex-start;gap:12px;padding:10px 18px}
.aside-item + .aside-item{border-top:1px solid var(--line-soft)}
.aside-rank{flex-shrink:0;width:24px;height:24px;line-height:24px;text-align:center;border-radius:6px;
  font-family:var(--mono);font-size:.74rem;font-weight:700;color:var(--faint);background:rgba(77,232,255,.08)}
.aside-rank.r1{color:#04070d;background:var(--amber);box-shadow:var(--amber-glow)}
.aside-rank.r2{color:#04070d;background:var(--cyan);box-shadow:var(--glow)}
.aside-rank.r3{color:#04070d;background:#ff7a59}
.aside-link{color:var(--ink);font-size:.92rem;line-height:1.5;overflow:hidden;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.aside-link:hover{color:var(--cyan)}
@media(max-width:900px){.channel-grid{grid-template-columns:1fr}.channel-aside{position:static}}


/* 核心指标卡片紧凑化（高度降低约1/3） */
.stat-card{padding:clamp(14px,1.2vw,16px) clamp(14px,1.2vw,16px)}
.stat-card .sub-head{gap:6px}
.stat-card .sub-icon{width:28px;height:28px}
.stat-card .stat-icon{width:28px;height:28px}
.stat-card .sub-name{font-size:1rem}
.stat-card .stat-value{font-size:1.6rem;margin-top:6px}
.stat-card .sub-desc{min-height:0;margin:0}


/* ============================================================
   关于我们：左文右图
   ============================================================ */
.about-split{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,3vw,44px);
  align-items:center;padding:clamp(24px,3vw,44px)}
.about-text{color:var(--ink);line-height:2;font-size:1.02rem}
.about-text p{text-indent:2em;margin:0}
.about-photo{margin:0;display:flex;flex-direction:column;gap:10px}
.about-photo img{width:100%;display:block;border-radius:12px;
  border:1px solid var(--line-soft);object-fit:cover;aspect-ratio:4/3;
  transition:transform .4s var(--ease),border-color .3s}
.about-photo img:hover{transform:scale(1.02);border-color:var(--cyan)}
.about-photo figcaption{text-align:center;color:var(--dim);
  font-family:var(--mono);font-size:.78rem;letter-spacing:.12em}
@media(max-width:860px){.about-split{grid-template-columns:1fr}}

/* 海洋声呐视频（替代 HUD） */
.stage-video{max-width:none !important;width:100%;aspect-ratio:16/9 !important;border-radius:14px;overflow:hidden;
  border:1px solid var(--line);box-shadow:inset 0 0 60px rgba(77,232,255,.04),0 30px 80px -40px rgba(0,0,0,.8);
  background:var(--panel)}
.sonar-video{width:100%;height:100%;object-fit:cover;display:block}


/* ============================================================
   移动端体验补充
   ============================================================ */
/* 触屏设备：增大点击热区，去除悬停依赖 */
@media (hover:none){
  .btn,.page-link,.news-more,.article-files a{padding-top:12px;padding-bottom:12px}
  .sub:hover,.product-card:hover,.news-feature:hover,.client-item:hover{transform:none}
}
/* iOS Safari 100svh 兜底 */
@supports (height:100dvh){
  .hero{min-height:100dvh}
}
/* 超小屏兜底 */
@media(max-width:340px){
  :root{--max:100%}
  section{padding-left:12px;padding-right:12px}
  .wordmark{font-size:clamp(2.2rem,16vw,3rem)}
}
/* 移动端降低背景动效开销 */
@media(max-width:760px){
  .bg-scan{animation:none;opacity:.25}
}


/* ============================================================
   服务对象轮播 (无缝跑马灯 + 圆点导航)
   ============================================================ */
.client-carousel{max-width:var(--max);margin:0 auto;overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.client-track{display:flex;gap:clamp(16px,2vw,26px);width:max-content;
  animation:clientScroll 32s linear infinite}
.client-carousel:hover .client-track,.client-carousel:active .client-track{animation-play-state:paused}
@keyframes clientScroll{to{transform:translateX(calc(-50% - clamp(16px,2vw,26px)/2))}}
.client-slide{position:relative;flex-shrink:0;width:clamp(240px,26vw,360px);
  aspect-ratio:16/10;overflow:hidden;border-radius:12px;border:1px solid var(--line-soft);
  background:var(--panel);transition:border-color .35s}
.client-slide:hover{border-color:var(--cyan)}
.client-slide img{width:100%;height:100%;object-fit:cover;display:block}
.client-logo{background:#fff;display:flex;align-items:center;justify-content:center}
.client-logo img{width:auto;height:auto;max-width:82%;max-height:64%;object-fit:contain}
.client-logo .client-name{color:var(--ink);background:linear-gradient(transparent,rgba(255,255,255,.92));
  text-shadow:none}
.client-name{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 10px;
  font-family:var(--disp);font-size:.88rem;letter-spacing:.05em;color:var(--ink);
  background:linear-gradient(transparent,rgba(11,20,32,.88));text-align:center;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.client-dots{display:flex;justify-content:center;gap:10px;margin-top:clamp(20px,2.4vw,30px)}
.client-dot{width:26px;height:4px;border-radius:2px;border:none;cursor:pointer;
  background:rgba(77,232,255,.22);transition:background .3s}
.client-dot.active{background:var(--cyan);box-shadow:var(--glow-soft)}
@media(max-width:760px){
  .client-slide{width:clamp(200px,62vw,280px)}
  .client-track{animation-duration:24s}
}
@media (prefers-reduced-motion:reduce){
  .client-track{animation:none;flex-wrap:wrap;justify-content:center;width:auto}
  .client-slide[aria-hidden="true"]{display:none}
  .client-dots{display:none}
}


/* ============================================================
   右侧悬浮客服 + 回到顶部（全局）
   ============================================================ */
.float-panel{
  position:fixed;right:18px;bottom:140px;z-index:80;
  display:flex;flex-direction:column;gap:10px
}
.float-item{
  position:relative;width:52px;height:52px;border-radius:50%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  color:var(--cyan);background:rgba(11,20,32,.9);
  border:1px solid var(--line);box-shadow:var(--glow-soft);
  cursor:pointer;transition:transform .25s var(--ease),background .25s,color .25s;
  -webkit-tap-highlight-color:transparent
}
.float-item:hover{transform:translateY(-3px);background:var(--cyan);color:#04070d;box-shadow:var(--glow)}
.float-item svg{width:22px;height:22px}
.float-item-txt{font-size:.6rem;letter-spacing:.05em;line-height:1}
/* 电话按钮：与微信一致，悬停弹出号码气泡 */
.float-phone-pop{
  position:absolute;right:64px;bottom:6px;
  padding:10px 16px;border-radius:8px;white-space:nowrap;
  font-family:var(--mono);font-size:.85rem;font-weight:500;
  letter-spacing:.04em;color:var(--ink);font-variant-numeric:tabular-nums;
  background:rgba(11,20,32,.96);border:1px solid var(--line);
  box-shadow:0 18px 50px -20px rgba(0,0,0,.8);
  opacity:0;visibility:hidden;transform:translateX(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility 0s .25s;
  pointer-events:none
}
.float-item-phone:hover .float-phone-pop,
.float-item-phone:focus-within .float-phone-pop,
.float-item-phone:active .float-phone-pop{
  opacity:1;visibility:visible;transform:none;transition-delay:0s
}
/* 微信二维码气泡 */
.float-qr-pop{
  position:absolute;right:64px;bottom:-10px;width:180px;
  padding:12px;border-radius:10px;text-align:center;
  background:rgba(11,20,32,.96);border:1px solid var(--line);
  box-shadow:0 18px 50px -20px rgba(0,0,0,.8);
  opacity:0;visibility:hidden;transform:translateX(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility 0s .25s;
  pointer-events:none
}
.float-item-qr:hover .float-qr-pop,
.float-item-qr:focus-within .float-qr-pop,
.float-item-qr:active .float-qr-pop{
  opacity:1;visibility:visible;transform:none;transition-delay:0s
}
.float-qr-pop img{width:100%;height:auto;display:block;border-radius:6px;background:#fff}
.float-qr-pop em{display:block;margin-top:8px;font-style:normal;font-family:var(--disp);
  font-size:.78rem;color:var(--dim);letter-spacing:.04em}

/* 回到顶部 */
.back-top{
  position:fixed;right:18px;bottom:72px;z-index:80;
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);background:rgba(11,20,32,.9);
  border:1px solid var(--line);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility 0s .3s,
             background .25s,color .25s,border-color .25s;
  -webkit-tap-highlight-color:transparent
}
.back-top.show{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.back-top svg{width:24px;height:24px}
.back-top:hover{color:var(--cyan);border-color:var(--cyan);box-shadow:var(--glow-soft)}

/* 移动端适配 */
@media(max-width:760px){
  .float-panel{right:12px;bottom:120px}
  .float-item,.back-top{width:46px;height:46px}
  .float-item svg{width:20px;height:20px}
  .back-top{right:12px;bottom:60px}
}
@media (prefers-reduced-motion:reduce){
  .float-item,.back-top{transition:none}
}