/* =========================================================
   Black Box Trading — Low Current Systems
   ========================================================= */
:root{
  --bg:#0a0b0d;
  --bg-2:#101216;
  --panel:#15181d;
  --panel-2:#1b1f25;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.15);
  --text:#eef0f2;
  --muted:#a6aeb8;
  --dim:#8a939e;
  --accent:#35b6ff;
  --accent-2:#86d3ff;
  --accent-soft:rgba(53,182,255,.1);
  --accent-ink:#03121c;
  --ok:#3ddc84;
  --paper:#eef1f4;
  --paper-2:#e1e6eb;
  --ink:#0f1114;
  --ink-muted:#4a5159;
  --ink-line:rgba(15,17,20,.12);
  --radius:16px;
  --radius-lg:24px;
  --font:"Readex Pro","IBM Plex Sans Arabic",Tahoma,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
  --header-h:76px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0}
button,input,select,textarea{font:inherit;color:inherit}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
::selection{background:var(--accent);color:var(--accent-ink)}

.wrap{width:min(1200px,100% - 40px);margin-inline:auto}
.mono{font-family:var(--mono)}
.ltr{direction:ltr;unicode-bidi:isolate}
.accent{color:var(--accent)}
.skip-link{position:absolute;right:-9999px;top:10px;z-index:999;background:var(--accent);color:var(--accent-ink);padding:10px 16px;border-radius:10px;font-weight:600}
.skip-link:focus{right:10px}
.led{display:inline-block;flex:none;width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(61,220,132,.16),0 0 12px rgba(61,220,132,.7);animation:blink 2.4s ease-in-out infinite}
.led-accent{background:var(--accent);box-shadow:0 0 0 3px rgba(53,182,255,.16),0 0 12px rgba(53,182,255,.7)}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.4}}

/* ---------- Type ---------- */
.label{display:inline-flex;align-items:center;gap:10px;font-size:13.5px;font-weight:500;color:var(--accent)}
.label::before{content:"";width:22px;height:1.5px;background:currentColor}
.label .code{font-family:var(--mono);font-size:12px;color:var(--dim);letter-spacing:.06em}
.display{font-size:clamp(38px,4.4vw,62px);line-height:1.2;font-weight:700}
.h2{font-size:clamp(30px,3.6vw,48px);line-height:1.22;font-weight:600}
.lead{font-size:clamp(16px,1.35vw,18.5px);line-height:1.85;color:var(--muted);max-width:640px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 24px;border-radius:12px;border:1.5px solid transparent;font:600 15px/1 var(--font);cursor:pointer;white-space:nowrap;-webkit-tap-highlight-color:transparent;transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .25s var(--ease),box-shadow .25s ease}
.btn svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s var(--ease)}
.btn-sm{min-height:42px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-2)}
.btn-dark{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn:active{transform:scale(.97);transition-duration:.08s}
.link{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--accent);transition:gap .2s ease,color .2s ease}
.link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- Top bar & header ---------- */
.topbar{background:#060708;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:40px}
.topbar-group{display:flex;align-items:center;gap:22px}
.topbar-item{display:inline-flex;align-items:center;gap:8px;transition:color .2s ease}
.topbar strong{color:var(--text);font-weight:500}

.site-header{position:sticky;top:0;z-index:50;background:rgba(10,11,13,.84);-webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:12px;margin-inline-end:auto}
.brand-mark{width:42px;height:42px;flex:none}
.brand-name{display:flex;flex-direction:column;line-height:1.1}
.brand-name strong{font-size:18px;font-weight:700}
.brand-name small{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--dim);margin-top:5px;direction:ltr;text-align:right}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{position:relative;font-size:14.5px;color:var(--muted);padding:8px 13px;border-radius:10px;transition:color .2s ease,background-color .2s ease}
.main-nav a[aria-current="page"]{color:var(--text)}
.main-nav a[aria-current="page"]::after{content:"";position:absolute;bottom:-2px;left:50%;width:16px;height:2px;margin-left:-8px;border-radius:2px;background:var(--accent)}
.header-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);background:var(--panel);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:background-color .2s ease,border-color .2s ease}
.menu-toggle span{width:18px;height:1.5px;background:var(--text);transition:transform .3s ease,opacity .2s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.mobile-menu{display:none}

/* ---------- Hero ---------- */
.hero{position:relative;padding:76px 0 100px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(640px 420px at 12% 35%,rgba(53,182,255,.13),transparent 70%)}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1.08fr;gap:60px;align-items:center}
.hero .display{margin-top:22px}
.hero .lead{margin-top:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.hero-points{list-style:none;display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:36px;color:var(--muted);font-size:14.5px}
.hero-points li{display:flex;align-items:center;gap:9px}
.hero-points li::before{content:"";width:7px;height:7px;background:var(--accent);transform:rotate(45deg);border-radius:1px}

.blueprint{position:relative;aspect-ratio:560/470;border:1px solid var(--line-2);border-radius:var(--radius-lg);background:linear-gradient(180deg,#13161b,#0c0d10);box-shadow:0 40px 100px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.05)}
.blueprint-head{position:absolute;top:0;left:0;right:0;height:46px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:12px;color:var(--dim);direction:ltr}
.blueprint-head span{display:inline-flex;align-items:center;gap:8px}
.blueprint-svg{position:absolute;top:46px;left:0;width:100%;height:calc(100% - 46px)}
.bp-wall{fill:none;stroke:rgba(255,255,255,.26);stroke-width:2}
.bp-wall-in{fill:none;stroke:rgba(255,255,255,.14);stroke-width:1.4}
.bp-room{font-family:var(--mono);font-size:10px;letter-spacing:.12em;fill:#6d7681}
.bp-route{fill:none;stroke:rgba(53,182,255,.3);stroke-width:1.4;stroke-dasharray:3 5}
.bp-pulse{fill:none;stroke:var(--accent);stroke-width:2.6;stroke-linecap:round;stroke-dasharray:7 93;animation:flow 3.4s linear infinite}
.bp-pulse.p2{animation-delay:-.9s}.bp-pulse.p3{animation-delay:-1.7s}.bp-pulse.p4{animation-delay:-2.5s}
@keyframes flow{from{stroke-dashoffset:100}to{stroke-dashoffset:0}}
.bp-cone{fill:rgba(53,182,255,.09)}
.bp-dev{fill:#0c0d10;stroke:var(--accent);stroke-width:1.8}
.bp-det{fill:#0c0d10;stroke:#e9edf1;stroke-width:1.4}
.bp-det-dot{fill:#ff5d4d}
.bp-rack{fill:#191c22;stroke:rgba(255,255,255,.4);stroke-width:1.4}
.bp-rack-line{stroke:rgba(255,255,255,.18);stroke-width:1}
.bp-ok{fill:var(--ok)}
.bp-wave{fill:none;stroke:var(--accent);stroke-width:1.4;opacity:.7}
.hud{position:absolute;z-index:2;display:flex;align-items:center;gap:12px;background:rgba(21,24,29,.94);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--line-2);border-radius:14px;padding:12px 16px;box-shadow:0 18px 40px rgba(0,0,0,.45);font-size:14px;line-height:1.35}
.hud small{display:block;font-family:var(--mono);font-size:11px;color:var(--dim);letter-spacing:.04em;direction:ltr;text-align:right}
.hud strong{font-weight:500}
.hud-1{top:72px;left:-26px}
.hud-2{bottom:76px;right:-24px}
.hud-3{bottom:-22px;left:34px}
.hud-3 b{font-family:var(--mono);font-size:20px;color:var(--accent);font-weight:600}
.legend{position:absolute;right:16px;bottom:14px;display:flex;flex-wrap:wrap;gap:8px;direction:ltr}
.legend span{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:11px;color:var(--dim);background:rgba(10,11,13,.7);border:1px solid var(--line);border-radius:6px;padding:3px 8px}
.legend i{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.legend i.w{background:#e9edf1}.legend i.r{background:#ff5d4d}.legend i.g{background:var(--ok)}

/* ---------- Ticker ---------- */
.ticker{border-block:1px solid var(--line);background:var(--bg-2);overflow:hidden}
.ticker-track{display:flex;width:max-content;direction:ltr;animation:marquee 46s linear infinite}
.ticker-group{display:flex;gap:46px;padding:20px 23px}
.ticker-item{display:inline-flex;align-items:center;gap:12px;white-space:nowrap;font-size:15.5px;color:var(--muted);direction:rtl}
.ticker-item b{font-family:var(--mono);font-size:12px;font-weight:500;color:var(--accent);letter-spacing:.06em}
.ticker:hover .ticker-track{animation-play-state:paused}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- Sections ---------- */
.section{padding:112px 0}
.section-tight{padding:84px 0}
.section-alt{background:var(--bg-2);border-block:1px solid var(--line)}
.section-light{background:var(--paper);color:var(--ink)}
.section-light .lead,.section-light .section-head p{color:var(--ink-muted)}
.section-light .label .code{color:#6b727a}
.section-light .label{color:#0b6aa8}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:56px}
.section-head .h2{margin-top:16px}
.section-head>p{max-width:440px;color:var(--muted);font-size:15.5px}
.section-head-center{flex-direction:column;align-items:center;text-align:center}
.section-head-center>p{max-width:620px}

/* ---------- Systems grid (home) ---------- */
.sys-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.sys-card{position:relative;display:flex;flex-direction:column;gap:14px;min-height:280px;padding:28px 24px 24px;background:var(--bg);transition:background-color .25s ease}
.sys-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:right;transition:transform .4s var(--ease)}
.sys-top{display:flex;justify-content:space-between;align-items:flex-start}
.sys-code{font-family:var(--mono);font-size:12px;color:var(--dim);direction:ltr}
.sys-card h3{font-size:18px;line-height:1.45}
.sys-card p{font-size:14px;line-height:1.75;color:var(--muted)}
.sys-card .link{margin-top:auto;font-size:14px}
.icon{width:48px;height:48px;flex:none;border-radius:13px;display:grid;place-items:center;background:var(--accent-soft);border:1px solid rgba(53,182,255,.22);color:var(--accent);transition:background-color .25s ease,color .25s ease}
.icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.icon-lg{width:60px;height:60px;border-radius:16px}
.icon-lg svg{width:30px;height:30px}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-2)}
.stat{padding:34px 30px;border-inline-start:1px solid var(--line)}
.stat:first-child{border-inline-start:0}
.stat strong{display:block;font:600 clamp(36px,3.8vw,50px)/1 var(--mono);letter-spacing:-.02em;direction:ltr;text-align:right}
.stat strong em{font-style:normal;color:var(--accent)}
.stat p{margin-top:12px;color:var(--muted);font-size:14.5px}

/* ---------- Why (light) ---------- */
.why-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:72px;align-items:start}
.why-grid .h2{margin:16px 0 18px}
.feature-rows{margin-top:34px}
.feature-row{display:grid;grid-template-columns:48px 1fr;gap:18px;padding:22px 0;border-top:1px solid var(--ink-line)}
.feature-row:last-child{border-bottom:1px solid var(--ink-line)}
.feature-row .num{font-family:var(--mono);font-size:13px;color:#0b6aa8;padding-top:4px}
.feature-row h3{font-size:18.5px;margin-bottom:6px}
.feature-row p{font-size:15px;color:var(--ink-muted)}
.spec-card{position:sticky;top:calc(var(--header-h) + 30px);background:var(--ink);color:var(--text);border-radius:var(--radius-lg);padding:30px;box-shadow:0 30px 70px rgba(15,17,20,.25);overflow:hidden}
.spec-card>*{position:relative;z-index:1}
.spec-card-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line-2);font-family:var(--mono);font-size:12px;color:var(--dim);direction:ltr}
.spec-card h3{font-size:22px;margin:22px 0 6px}
.spec-card>p{color:var(--muted);font-size:14.5px;margin-bottom:18px}
.spec-table{display:grid;margin:0}
.spec-table div{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:13px 0;border-top:1px dashed var(--line-2);font-size:14.5px}
.spec-table dt{color:var(--muted)}
.spec-table dd{margin:0;font-family:var(--mono);font-size:13.5px;color:var(--text);text-align:left;direction:ltr}
.spec-card .btn{margin-top:22px;width:100%}

/* ---------- Sectors ---------- */
.sector-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.sector{display:flex;flex-direction:column;gap:14px;padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);transition:border-color .25s ease,background-color .25s ease,transform .25s var(--ease)}
.sector h3{font-size:18px}
.sector p{font-size:14px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-flex;align-items:center;font-size:12.5px;line-height:1.4;padding:5px 10px;border-radius:7px;background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--muted)}
.chip-mono{font-family:var(--mono);font-size:12px;direction:ltr}
.section-light .chip{background:#fff;border-color:var(--ink-line);color:var(--ink-muted)}

/* ---------- Process ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(7,1fr);gap:18px;list-style:none}
.steps::before{content:"";position:absolute;top:8px;left:0;right:0;height:1px;background:linear-gradient(to left,var(--accent),rgba(53,182,255,.15))}
.step{position:relative;padding-top:38px}
.step::before{content:"";position:absolute;top:2px;right:0;width:13px;height:13px;transform:rotate(45deg);background:var(--bg);border:2px solid var(--accent)}
.step:first-child::before{background:var(--accent)}
.step b{display:block;font-family:var(--mono);font-size:12.5px;font-weight:500;color:var(--accent);margin-bottom:8px}
.step h3{font-size:16.5px;margin-bottom:6px}
.step p{font-size:13.5px;line-height:1.7;color:var(--muted)}

/* ---------- Projects ---------- */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.proj{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-2);transition:border-color .25s ease,transform .3s var(--ease),box-shadow .3s ease}
.proj-visual{position:relative;aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);background:radial-gradient(circle at 75% 30%,rgba(53,182,255,.22),transparent 55%),linear-gradient(160deg,#171a20,#0d0e11)}
.proj-visual.v2{background:radial-gradient(circle at 25% 70%,rgba(53,182,255,.2),transparent 55%),linear-gradient(200deg,#181b21,#0d0e11)}
.proj-visual.v3{background:radial-gradient(circle at 50% 110%,rgba(53,182,255,.26),transparent 60%),linear-gradient(180deg,#14171c,#0b0c0f)}
.proj-visual .proj-code{position:absolute;top:16px;right:18px;font-family:var(--mono);font-size:12px;color:var(--dim);direction:ltr}
.proj-visual .proj-big{position:absolute;bottom:16px;left:20px;direction:ltr;text-align:left;line-height:1}
.proj-visual .proj-big strong{display:block;font:600 44px/1 var(--mono);letter-spacing:-.03em}
.proj-visual .proj-big small{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.14em}
.proj-visual .led{position:absolute;top:20px;left:20px}
.proj-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:22px 24px 24px}
.proj-meta{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--dim)}
.proj h3{font-size:19px;line-height:1.45}
.proj-body>p{font-size:14.5px;color:var(--muted)}
.kv-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.kv small{display:block;font-size:12.5px;color:var(--dim)}
.kv strong{font:600 17px var(--mono);direction:ltr;display:block;text-align:right}

/* ---------- Filters ---------- */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:30px}
.filter{font-size:14px;font-weight:500;padding:9px 16px;border-radius:10px;border:1px solid var(--line-2);background:transparent;color:var(--muted);cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease}
.filter[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.empty{padding:40px 0;text-align:center;color:var(--dim)}

/* ---------- Maintenance band ---------- */
.band{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.band .h2{margin:16px 0 18px}
.check-list{list-style:none;display:grid;gap:12px;margin-top:26px}
.check-list li{display:flex;align-items:flex-start;gap:12px;font-size:15.5px;color:var(--text)}
.check-list li::before{content:"";flex:none;width:20px;height:20px;margin-top:4px;border-radius:6px;background:var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2335b6ff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5 9-10'/%3E%3C/svg%3E") center/12px no-repeat;border:1px solid rgba(53,182,255,.25)}
.section-light .check-list li{color:var(--ink)}
.emergency{position:relative;padding:32px;border-radius:var(--radius-lg);border:1px solid rgba(53,182,255,.35);background:linear-gradient(160deg,rgba(53,182,255,.12),rgba(53,182,255,.02) 60%),var(--panel);overflow:hidden}
.emergency-head{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.1em;direction:ltr;justify-content:flex-end}
.emergency h3{font-size:24px;margin:18px 0 8px}
.emergency p{color:var(--muted);font-size:15px}
.emergency .phone{display:block;font:600 clamp(26px,2.6vw,34px)/1.2 var(--mono);margin:22px 0;direction:ltr;text-align:right;transition:color .2s ease}
.emergency .btn{width:100%}
.emergency .btn+.btn{margin-top:10px}

/* ---------- CTA ---------- */
.cta{position:relative;display:grid;grid-template-columns:1.4fr auto;gap:40px;align-items:center;padding:60px;border:1px solid var(--line-2);border-radius:28px;overflow:hidden;background:radial-gradient(560px 320px at 0% 0%,rgba(53,182,255,.2),transparent 70%),var(--panel)}
.cta>*{position:relative;z-index:1}
.cta .h2{margin:16px 0 14px}
.cta p{color:var(--muted);max-width:560px}
.cta-actions{display:flex;flex-direction:column;gap:10px;min-width:240px}
.cta-actions small{text-align:center;font-size:13px;color:var(--dim)}

/* ---------- Footer ---------- */
.footer{margin-top:112px;background:#060708;border-top:1px solid var(--line);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:48px;padding-bottom:56px}
.footer-brand p{margin-top:20px;max-width:340px;font-size:14.5px;color:var(--muted)}
.footer-col{display:flex;flex-direction:column;gap:10px}
.footer-col strong{font-size:15px;margin-bottom:6px}
.footer-col a,.footer-col span{font-size:14px;color:var(--muted);transition:color .2s ease;align-self:flex-start}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;padding:22px 0 28px;border-top:1px solid var(--line);font-size:13px;color:var(--dim)}
.footer-bottom a{transition:color .2s ease}

/* ---------- Page hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:68px 0 72px;border-bottom:1px solid var(--line)}
.page-hero::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(560px 360px at 8% 20%,rgba(53,182,255,.13),transparent 70%)}
.page-hero-grid{position:relative;display:grid;grid-template-columns:1.35fr .65fr;gap:56px;align-items:end}
.page-hero-grid.single{grid-template-columns:1fr;max-width:860px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:26px;font-size:13.5px;color:var(--dim)}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb span[aria-hidden]{color:var(--accent)}
.page-hero h1{font-size:clamp(36px,4.6vw,62px);line-height:1.18;font-weight:700;margin-top:18px}
.page-hero .lead{margin-top:22px}
.hero-stats{display:grid;gap:12px}
.hero-stat{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(21,24,29,.7)}
.hero-stat small{font-size:13.5px;color:var(--muted)}
.hero-stat strong{font:600 26px/1 var(--mono);direction:ltr}

/* ---------- Sub navigation ---------- */
.subnav{position:sticky;top:var(--header-h);z-index:40;background:rgba(10,11,13,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.subnav-inner{display:flex;gap:6px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.subnav-inner::-webkit-scrollbar{display:none}
.subnav a{flex:none;display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);padding:7px 13px;border-radius:9px;border:1px solid transparent;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
.subnav a b{font-family:var(--mono);font-size:11.5px;font-weight:500;color:var(--dim)}
.subnav a.is-active{color:var(--text);border-color:rgba(53,182,255,.45);background:var(--accent-soft)}
.subnav a.is-active b{color:var(--accent)}

/* ---------- System detail ---------- */
.system{display:grid;grid-template-columns:.92fr 1.08fr;gap:60px;padding:72px 0;border-top:1px solid var(--line);scroll-margin-top:calc(var(--header-h) + 64px)}
.system:first-child{border-top:0}
.system-head{position:sticky;top:calc(var(--header-h) + 90px);align-self:start}
.system-head .top{display:flex;align-items:center;justify-content:space-between;gap:16px}
.system-head .sys-code{font-size:13px}
.system-head h2{font-size:clamp(28px,2.8vw,38px);line-height:1.3;margin:24px 0 6px}
.system-head .en{font-family:var(--mono);font-size:13px;color:var(--dim);direction:ltr;text-align:right}
.system-head>p{margin:18px 0 22px;color:var(--muted);font-size:16px}
.system-head .btn{margin-top:28px}
.system-body{display:grid;gap:16px}
.panel{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-2);padding:26px 28px}
.panel h3{font-size:14px;font-weight:500;color:var(--accent);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.panel h3::before{content:"";width:7px;height:7px;background:var(--accent);transform:rotate(45deg)}
.provide-list{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:12px 22px}
.provide-list li{display:flex;gap:10px;font-size:15px;line-height:1.6}
.provide-list li::before{content:"—";color:var(--accent);flex:none}
.panel .spec-table div:first-child{border-top:0;padding-top:0}

/* ---------- Sector detail ---------- */
.sector-list{display:grid;gap:16px}
.sector-detail{display:grid;grid-template-columns:.95fr 1fr 1fr;gap:36px;padding:32px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-2);scroll-margin-top:calc(var(--header-h) + 24px);transition:border-color .25s ease}
.sector-detail .icon{margin-bottom:18px}
.sector-detail h2{font-size:24px;margin-bottom:8px}
.sector-detail .intro p{font-size:14.5px;color:var(--muted)}
.sector-detail h3{font-size:14px;font-weight:500;color:var(--accent);margin-bottom:14px}
.dot-list{list-style:none;display:grid;gap:9px}
.dot-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.6}
.dot-list li::before{content:"";flex:none;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--accent)}
.sector-detail .systems-col{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}

/* ---------- Maintenance tiers ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.tier{position:relative;display:flex;flex-direction:column;gap:20px;padding:32px 30px;border:1px solid var(--line-2);border-radius:var(--radius-lg);background:var(--bg-2)}
.tier.featured{border-color:var(--accent);background:linear-gradient(180deg,rgba(53,182,255,.1),var(--bg-2) 45%)}
.tier-badge{position:absolute;top:-13px;right:28px;background:var(--accent);color:var(--accent-ink);font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:7px}
.tier-name small{display:block;font-family:var(--mono);font-size:12px;color:var(--dim);letter-spacing:.12em;direction:ltr;text-align:right}
.tier-name h3{font-size:24px;margin-top:6px}
.tier-name p{font-size:14.5px;color:var(--muted);margin-top:6px}
.tier-key{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.tier-key div{padding:14px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.tier-key strong{display:block;font:600 22px/1.1 var(--mono);direction:ltr;text-align:right}
.tier-key small{font-size:12.5px;color:var(--dim)}
.tier .check-list{margin-top:0}
.tier .check-list li{font-size:14.5px}
.tier .btn{margin-top:auto}
.note{margin-top:22px;text-align:center;font-size:14px;color:var(--dim)}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-2)}
.table{width:100%;border-collapse:collapse;min-width:640px}
.table th,.table td{padding:16px 22px;text-align:right;border-bottom:1px solid var(--line);font-size:14.5px;vertical-align:top}
.table th{font-size:13.5px;font-weight:500;color:var(--accent);background:var(--panel)}
.table tr:last-child td{border-bottom:0}
.table td:first-child{font-weight:500;white-space:nowrap}
.table td{color:var(--muted)}
.table td:first-child{color:var(--text)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.faq-layout .section-head{display:block;margin:0;position:sticky;top:calc(var(--header-h) + 30px)}
.faq-layout .section-head>p{margin-top:16px}
.faq{display:grid;gap:10px}
.faq details{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);padding:0 22px;transition:border-color .2s ease,background-color .2s ease}
.faq details[open]{border-color:rgba(53,182,255,.45);background:var(--panel)}
.faq summary{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;font-size:16px;font-weight:500;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;width:30px;height:30px;display:grid;place-items:center;border-radius:9px;border:1px solid var(--line-2);font:400 18px/1 var(--mono);color:var(--accent);transition:transform .25s ease,background-color .2s ease,color .2s ease}
.faq details[open] summary::after{transform:rotate(45deg);background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.faq details p{padding-bottom:22px;color:var(--muted);font-size:15px}

/* ---------- About ---------- */
.story{display:grid;grid-template-columns:1.1fr .9fr;gap:72px;align-items:center}
.story .h2{margin:16px 0 22px}
.story p{color:var(--muted);font-size:16px}
.story p+p{margin-top:14px}
.story p strong{color:var(--text);font-weight:500}
.quote{position:relative;padding:40px;border-radius:var(--radius-lg);border:1px solid var(--line-2);background:var(--panel);overflow:hidden}
.quote::before{content:"";position:absolute;top:0;right:0;width:4px;height:100%;background:var(--accent)}
.quote b{display:block;font:700 70px/.6 var(--mono);color:var(--accent);margin-bottom:14px}
.quote p{font-size:21px;line-height:1.75;color:var(--text);font-weight:500}
.quote small{display:block;margin-top:20px;color:var(--dim);font-size:14px}
.mv-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.mv{padding:34px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--ink-line)}
.mv span{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:#0b6aa8;direction:ltr;display:block;text-align:right}
.mv h3{font-size:24px;line-height:1.5;margin:12px 0 10px}
.mv p{color:var(--ink-muted);font-size:15px}
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.card{display:flex;flex-direction:column;gap:12px;padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);transition:border-color .25s ease,transform .25s var(--ease)}
.card h3{font-size:18px}
.card p{font-size:14.5px;color:var(--muted)}
.standards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.standard{padding:24px 26px;background:var(--bg)}
.standard strong{display:block;font:600 17px var(--mono);direction:ltr;text-align:right;color:var(--text)}
.standard span{font-size:14px;color:var(--muted)}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:start}
.form{padding:36px;border:1px solid var(--line-2);border-radius:var(--radius-lg);background:var(--bg-2)}
.form h2{font-size:28px}
.form>p{margin:6px 0 28px;color:var(--muted);font-size:14.5px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px;min-width:0;margin:0;padding:0;border:0}
.field-full{grid-column:1/-1}
.field label,.field legend{padding:0;font-size:14px;font-weight:500}
.field legend{margin-bottom:8px}
.field label small,.field legend small{font-weight:400;color:var(--dim)}
.field input,.field select,.field textarea{width:100%;padding:13px 15px;border-radius:12px;border:1px solid var(--line-2);background:var(--bg);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a6aeb8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:left 14px center;background-size:16px;padding-left:40px}
.field textarea{min-height:140px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#6f7883}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(53,182,255,.16)}
.field input:user-invalid,.field textarea:user-invalid{border-color:#ff5d4d}
.toggle-chips{display:flex;flex-wrap:wrap;gap:8px}
.toggle{position:relative}
.toggle input{position:absolute;inset:0;margin:0;opacity:0;cursor:pointer}
.toggle span{display:inline-flex;padding:9px 14px;border-radius:10px;border:1px solid var(--line-2);font-size:14px;color:var(--muted);transition:background-color .2s ease,border-color .2s ease,color .2s ease}
.toggle input:checked+span{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:500}
.toggle input:focus-visible+span{outline:2px solid var(--accent);outline-offset:3px}
.form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.form-note{margin-top:16px;font-size:13px;color:var(--dim)}
.form-status{margin-top:12px;font-size:14px;color:var(--ok);min-height:1em}
.contact-aside{display:grid;gap:14px}
.contact-item{display:flex;align-items:flex-start;gap:16px;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2)}
.contact-item small{display:block;font-size:13px;color:var(--dim)}
.contact-item a,.contact-item strong{font-size:16px;font-weight:500;transition:color .2s ease}
.contact-item .num{font-family:var(--mono);direction:ltr;display:inline-block}
.contact-item p{font-size:13.5px;color:var(--muted);margin-top:2px}

/* ---------- Legal / 404 ---------- */
.prose{max-width:760px;color:var(--muted);font-size:16.5px;line-height:1.95}
.prose h2{font-size:24px;color:var(--text);margin:44px 0 12px}
.prose h2:first-child{margin-top:0}
.prose p+p{margin-top:14px}
.prose ul{padding-inline-start:22px;margin:12px 0}
.prose li{margin:6px 0}
.prose li::marker{color:var(--accent)}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.notice{margin-bottom:36px;padding:18px 22px;border-radius:var(--radius);border:1px dashed rgba(53,182,255,.5);background:var(--accent-soft);color:var(--text);font-size:15px}
.not-found{min-height:62vh;display:grid;place-items:center;text-align:center;padding:80px 0}
.not-found .code{font:700 clamp(96px,16vw,170px)/1 var(--mono);color:var(--accent);letter-spacing:-.04em}
.not-found h1{font-size:clamp(28px,3.4vw,40px);margin:18px 0 10px}
.not-found p{color:var(--muted);max-width:460px;margin:0 auto 30px}
.not-found .hero-actions{justify-content:center;margin-top:0}

/* ---------- Reveal (only when JS runs) ---------- */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s var(--ease);transition-delay:calc(var(--d,0) * 90ms)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- Hover (real pointers only) ---------- */
@media (hover:hover) and (pointer:fine){
  .btn-primary:hover{background:var(--bg);color:var(--accent);border-color:var(--accent);transform:translateY(-2px);box-shadow:0 12px 30px rgba(53,182,255,.22)}
  .btn-ghost:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);transform:translateY(-2px)}
  .btn-dark:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);transform:translateY(-2px)}
  .section-light .btn-primary:hover{background:var(--ink);color:var(--accent);border-color:var(--ink)}
  .btn:hover svg{transform:translateX(-4px)}
  .link:hover{gap:12px;color:var(--accent-2)}
  .topbar-item:hover{color:var(--accent)}
  .main-nav a:hover{color:var(--text);background:rgba(255,255,255,.05)}
  .menu-toggle:hover{border-color:var(--accent)}
  .sys-card:hover{background:var(--panel)}
  .sys-card:hover::before{transform:scaleX(1)}
  .sys-card:hover .icon{background:var(--accent);color:var(--accent-ink)}
  .sector:hover{border-color:rgba(53,182,255,.45);background:var(--panel);transform:translateY(-3px)}
  .proj:hover{border-color:rgba(53,182,255,.45);transform:translateY(-4px);box-shadow:0 26px 60px rgba(0,0,0,.45)}
  .filter:hover{border-color:var(--accent);color:var(--text)}
  .filter[aria-pressed="true"]:hover{color:var(--accent-ink)}
  .emergency .phone:hover{color:var(--accent)}
  .footer-col a:hover,.footer-bottom a:hover,.breadcrumb a:hover,.contact-item a:hover{color:var(--accent)}
  .subnav a:hover{color:var(--text);border-color:var(--line-2)}
  .sector-detail:hover{border-color:rgba(53,182,255,.35)}
  .card:hover{border-color:rgba(53,182,255,.4);transform:translateY(-3px)}
  .faq details:hover{border-color:rgba(53,182,255,.35)}
  .toggle:hover span{border-color:var(--accent);color:var(--text)}
  .toggle:hover input:checked+span{color:var(--accent-ink)}
}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .main-nav a{padding:8px 9px;font-size:14px}
  .sys-grid{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(4,1fr);row-gap:40px}
  .steps::before{display:none}
}
@media (max-width:1000px){
  .main-nav,.header-actions .btn-ghost{display:none}
  .menu-toggle{display:flex}
  .mobile-menu{position:absolute;top:100%;left:16px;right:16px;display:none;flex-direction:column;gap:2px;padding:12px;border:1px solid var(--line-2);border-radius:18px;background:var(--panel);box-shadow:0 30px 60px rgba(0,0,0,.5)}
  .mobile-menu.open{display:flex}
  .mobile-menu a:not(.btn){padding:12px 14px;border-radius:10px;font-size:15.5px;color:var(--muted)}
  .mobile-menu a[aria-current="page"]{color:var(--text);background:var(--accent-soft)}
  .mobile-menu .btn{margin-top:8px}
  .hero-grid,.why-grid,.band,.story,.contact-grid,.faq-layout,.page-hero-grid,.system{grid-template-columns:1fr}
  .hero-grid{gap:56px}
  .hud-1{left:-8px}.hud-2{right:-8px}
  .spec-card,.system-head,.faq-layout .section-head{position:static}
  .sector-grid,.card-grid{grid-template-columns:repeat(2,1fr)}
  .proj-grid,.tiers,.standards{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-inline-start:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .sector-detail{grid-template-columns:1fr 1fr}
  .sector-detail .intro{grid-column:1/-1}
  .cta{grid-template-columns:1fr;padding:44px}
  .cta-actions{min-width:0;align-items:stretch}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .page-hero-grid{gap:32px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .system{gap:32px;padding:56px 0}
}
@media (max-width:640px){
  .wrap{width:min(1200px,100% - 32px)}
  .topbar .hide-sm{display:none}
  .topbar-inner{justify-content:center}
  .brand-mark{width:38px;height:38px}
  .brand-name strong{font-size:16.5px}
  .header-actions .btn-primary{display:none}
  .hero{padding:48px 0 80px}
  .display{font-size:clamp(34px,10vw,44px)}
  .hero-actions .btn{flex:1 1 100%}
  .blueprint{aspect-ratio:560/520}
  .hud{padding:10px 12px;font-size:13px}
  .hud-1{top:58px;left:8px}
  .hud-2{right:8px;bottom:58px}
  .hud-3{left:12px;bottom:-24px}
  .legend{display:none}
  .section{padding:80px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:38px}
  .sys-grid{grid-template-columns:1fr 1fr}
  .sys-card{min-height:0;padding:22px 18px}
  .sys-card p{display:none}
  .sector-grid,.card-grid,.card-grid.cols-3,.proj-grid,.tiers,.standards,.mv-grid,.form-grid,.provide-list,.hero-stats{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;row-gap:0}
  .step{padding:0 34px 26px 0;border-right:1px solid rgba(53,182,255,.35);margin-right:6px}
  .step::before{top:4px;right:-7px}
  .step:last-child{border-right-color:transparent}
  .stats{grid-template-columns:1fr 1fr}
  .stat{padding:24px 18px}
  .sector-detail{grid-template-columns:1fr;padding:24px;gap:22px}
  .cta{padding:32px 22px;border-radius:22px}
  .emergency{padding:24px}
  .form{padding:22px}
  .form-actions .btn{flex:1 1 100%}
  .footer{margin-top:80px;padding-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column}
  .panel{padding:22px}
  .quote{padding:28px}
  .quote p{font-size:18px}
  .tier{padding:28px 22px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .ticker-track{animation:none;width:auto;flex-wrap:wrap;justify-content:center}
  .ticker-group[aria-hidden]{display:none}
  .js .reveal{opacity:1;transform:none}
}