:root{
  --ink-000:#06110F;
  --ink-900:#0B211D;
  --ink-700:#12332C;
  --ink-500:#1E4A3F;
  --cyan:#22F0C8;
  --cyan-soft:#7CF7DC;
  --orange:#FF7A29;
  --orange-hi:#FF8F4A;
  --amber:#FFD166;
  --paper:#E8F5F0;
  --muted:#9DB8B0;
  --line:rgba(30,74,63,.9);
  --line-soft:rgba(30,74,63,.55);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","Roboto Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --header-h:72px;
  --radius:18px;
  --shell:min(1280px,calc(100% - 2 * clamp(16px,4vw,48px)));
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--ink-000);
  background-image:
    repeating-linear-gradient(90deg,rgba(34,240,200,.045) 0 1px,transparent 1px 120px),
    repeating-linear-gradient(0deg,rgba(34,240,200,.032) 0 1px,transparent 1px 120px);
  background-attachment:fixed;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:clamp(16px,1.1vw,18px);
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--cyan);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--cyan-soft)}
img,svg{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
::selection{background:var(--cyan);color:var(--ink-000)}
#main-content{scroll-margin-top:calc(var(--header-h) + 20px);display:block}

/* ---------- utilities ---------- */
.shell{width:var(--shell);margin-inline:auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11px;letter-spacing:.34em;color:var(--muted);margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);flex:none}
.display-xl{font-size:clamp(56px,6vw,88px);line-height:1.05;font-weight:900;letter-spacing:-.02em}
.display-l{font-size:clamp(34px,3.6vw,52px);line-height:1.08;font-weight:900;letter-spacing:-.01em}
.display-m{font-size:clamp(22px,2vw,28px);line-height:1.25;font-weight:800}
.lede{font-size:clamp(16px,1.1vw,18px);line-height:1.75;color:var(--muted);max-width:62ch}
.num{font-family:var(--font-mono);font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1}
.num-xl{font-size:clamp(34px,3.6vw,52px);color:var(--cyan)}
.vnote{writing-mode:vertical-rl;font-size:11px;letter-spacing:.34em;color:var(--muted);padding:8px 4px;border-left:1px solid var(--ink-500)}

/* ---------- layout ---------- */
.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(28px,4vw,56px)}
.section-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:14px 24px;margin-bottom:clamp(20px,3vw,40px)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,32px)}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

/* ---------- panel / tag / button ---------- */
.panel{background:var(--ink-700);border:1px solid var(--ink-500);border-radius:var(--radius);padding:clamp(18px,2.4vw,28px);transition:border-color .18s var(--ease)}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border:1px solid var(--ink-500);border-radius:999px;font-size:12px;letter-spacing:.08em;color:var(--muted);background:rgba(18,51,44,.65)}
.tag--live{color:var(--amber);border-color:rgba(255,209,102,.45)}
.tag--key{color:var(--orange);border-color:rgba(255,122,41,.5)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:0 22px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:700;letter-spacing:.04em;text-decoration:none;cursor:pointer;transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease)}
.btn--primary{background:var(--orange);color:var(--ink-000)}
.btn--primary:hover{background:var(--orange-hi);color:var(--ink-000)}
.btn--quiet{background:var(--cyan);color:var(--ink-000)}
.btn--quiet:hover{background:var(--cyan-soft);color:var(--ink-000)}
.btn--ghost{border-color:var(--ink-500);color:var(--paper);background:transparent}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- breadcrumb ---------- */
.breadcrumb{margin-bottom:clamp(20px,3vw,36px)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb-list li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-list li+li::before{content:"/";color:var(--ink-500)}
.breadcrumb-list a{color:var(--muted)}
.breadcrumb-list a:hover{color:var(--cyan)}
.breadcrumb-list [aria-current="page"]{color:var(--paper)}

/* ---------- media ---------- */
.media-frame{position:relative;overflow:hidden;border:1px solid var(--ink-500);border-radius:var(--radius);background-color:var(--ink-700);background-image:repeating-linear-gradient(135deg,rgba(34,240,200,.07) 0 2px,transparent 2px 14px);transition:border-color .18s var(--ease)}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,transparent 46%,rgba(6,17,15,.74))}
.media-frame--16-9{aspect-ratio:16/9}
.media-frame--4-3{aspect-ratio:4/3}
.media-frame--1-1{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}

/* ---------- reveal ---------- */
[data-js="on"] [data-reveal]{opacity:.6;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
[data-js="on"] [data-reveal][data-revealed="true"]{opacity:1;transform:none}

/* ---------- skip link ---------- */
.skip-link{position:fixed;left:12px;top:-80px;z-index:300;background:var(--cyan);color:var(--ink-000);font-weight:800;font-size:14px;letter-spacing:.04em;padding:10px 18px;border-radius:0 0 12px 12px;transition:top .18s var(--ease)}
.skip-link:focus{top:0;color:var(--ink-000)}

/* ---------- progress ---------- */
.progress-rail{position:fixed;inset:0 0 auto 0;height:3px;z-index:200;background:rgba(30,74,63,.5);pointer-events:none}
.progress-bar{display:block;width:0;height:100%;background:var(--cyan)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(6,17,15,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.header-shell{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:var(--header-h)}
.brand-block{flex:none;display:flex;align-items:center}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--paper)}
.brand:hover{color:var(--paper)}
.brand-mark{width:38px;height:38px;flex:none;display:grid;place-items:center;border:1px solid var(--ink-500);border-radius:11px;font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--cyan);transition:border-color .18s var(--ease),color .18s var(--ease)}
.brand:hover .brand-mark{border-color:var(--cyan)}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-name{font-size:clamp(17px,1.4vw,20px);font-weight:900;letter-spacing:.02em}
.brand-note{font-size:11px;letter-spacing:.3em;color:var(--muted)}

.nav-toggle{display:none;align-items:center;gap:9px;min-height:44px;padding:0 15px;background:transparent;border:1px solid var(--ink-500);border-radius:999px;font-size:13px;letter-spacing:.12em;cursor:pointer;transition:border-color .18s var(--ease),color .18s var(--ease)}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-label{font-weight:700}
.nav-toggle-bars,.nav-toggle-bars::before,.nav-toggle-bars::after{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;transition:transform .18s var(--ease),opacity .18s var(--ease)}
.nav-toggle-bars{position:relative}
.nav-toggle-bars::before,.nav-toggle-bars::after{content:"";position:absolute;left:0}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}

.site-nav{display:flex;align-items:center;gap:6px}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;display:block;padding:10px 13px;font-size:14px;letter-spacing:.05em;color:var(--muted);border-radius:6px;transition:color .18s var(--ease)}
.nav-link::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.nav-link:hover{color:var(--paper)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-footnote{display:none;font-size:12px;letter-spacing:.04em;color:var(--muted);padding:12px 12px 4px}

/* ---------- contact rail ---------- */
.contact-rail{position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:120;display:flex;align-items:flex-start;justify-content:flex-end}
.contact-rail-toggle{writing-mode:vertical-rl;width:44px;height:132px;display:flex;align-items:center;justify-content:center;padding:12px 0;background:var(--orange);color:var(--ink-000);border:0;border-radius:14px 0 0 14px;font-size:12px;font-weight:800;letter-spacing:.3em;cursor:pointer;transition:background-color .18s var(--ease)}
.contact-rail-toggle:hover{background:var(--orange-hi)}
.contact-rail[data-open="true"] .contact-rail-toggle{background:var(--orange-hi)}
.contact-rail-panel{position:absolute;right:52px;top:50%;transform:translate(8px,-50%);width:min(300px,72vw);background:var(--ink-700);border:1px solid var(--ink-500);border-radius:16px;padding:18px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease)}
.contact-rail[data-open="true"] .contact-rail-panel{opacity:1;visibility:visible;pointer-events:auto;transform:translate(0,-50%)}
.contact-panel-title{font-size:13px;letter-spacing:.24em;color:var(--cyan);margin-bottom:12px}
.contact-line{display:flex;flex-direction:column;gap:2px;padding:8px 0;border-top:1px solid var(--line-soft)}
.contact-label{font-size:11px;letter-spacing:.22em;color:var(--muted)}
.contact-value{font-family:var(--font-mono);font-size:13px;color:var(--paper);word-break:break-all}
.contact-note{font-size:12px;line-height:1.6;color:var(--muted);padding:10px 0 14px}
.contact-rail-panel .btn{width:100%;min-height:42px;font-size:14px}

/* ---------- footer ---------- */
.site-footer{position:relative;z-index:1;background:var(--ink-900);border-top:1px solid var(--line);padding-top:clamp(40px,6vw,80px)}
.footer-brand{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 16px;padding-bottom:clamp(24px,4vw,44px)}
.footer-logo{font-size:clamp(22px,2vw,28px);font-weight:900;letter-spacing:.02em;color:var(--paper)}
.footer-logo:hover{color:var(--cyan)}
.footer-tag{font-size:11px;letter-spacing:.3em;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1.2fr;gap:clamp(24px,4vw,56px);padding-bottom:clamp(28px,5vw,56px)}
.footer-col{min-width:0}
.footer-title{font-size:11px;letter-spacing:.3em;color:var(--cyan);font-weight:700;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:9px;font-size:14px}
.footer-links a{color:var(--muted)}
.footer-links a:hover{color:var(--cyan)}
.footer-links-lg a{font-size:16px;color:var(--paper);font-weight:700}
.footer-links-lg a:hover{color:var(--cyan)}
.footer-contact{display:flex;flex-direction:column;gap:9px;font-size:14px;color:var(--paper)}
.footer-mail,.footer-tel{font-family:var(--font-mono);font-size:13px;letter-spacing:-.01em;color:var(--paper);word-break:break-all}
.footer-addr{font-size:14px;line-height:1.65;color:var(--muted)}
.footer-note{font-size:12px;line-height:1.7;color:var(--muted);margin-top:14px;max-width:30ch}
.footer-legal{border-top:1px solid var(--line);background:rgba(6,17,15,.55)}
.footer-legal-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding:20px 0 28px;font-size:13px;color:var(--muted)}
.footer-copy{font-size:13px;color:var(--muted)}
.footer-legal-nav{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer-legal-nav a{color:var(--muted);font-size:13px}
.footer-legal-nav a:hover{color:var(--cyan)}
.footer-icp{font-family:var(--font-mono);font-size:12px;letter-spacing:.02em;color:var(--muted)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .nav-link{padding:10px 9px;font-size:13px}
  .nav-link::after{left:9px;right:9px}
}
@media (max-width:960px){
  :root{--header-h:64px}
  body{padding-bottom:calc(70px + env(safe-area-inset-bottom,0px))}
  .header-shell{gap:12px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;left:0;right:0;bottom:0;top:auto;
    z-index:80;
    display:block;
    background:rgba(11,33,29,.98);
    border-top:1px solid var(--line);
    padding:8px 10px calc(8px + env(safe-area-inset-bottom,0px));
    max-height:min(76vh,560px);
    overflow:hidden;
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    transition:max-height .2s var(--ease);
  }
  .nav-list{display:flex;flex-direction:row;gap:2px;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;-ms-overflow-style:none}
  .nav-list::-webkit-scrollbar{display:none}
  .nav-link{padding:11px 12px;font-size:13px;white-space:nowrap}
  .nav-link::after{left:12px;right:12px;bottom:3px}
  .site-nav[data-open="true"]{overflow-y:auto;overscroll-behavior:contain}
  .site-nav[data-open="true"] .nav-list{flex-direction:column;overflow:visible;gap:0}
  .site-nav[data-open="true"] .nav-link{font-size:16px;padding:14px 12px;border-bottom:1px solid var(--line-soft);border-radius:0;white-space:normal}
  .site-nav[data-open="true"] .nav-link::after{display:none}
  .site-nav[data-open="true"] .nav-link[aria-current="page"]{background:rgba(34,240,200,.08);box-shadow:inset 3px 0 0 var(--cyan)}
  .site-nav[data-open="true"] .nav-footnote{display:block}
  .contact-rail{top:auto;bottom:calc(78px + env(safe-area-inset-bottom,0px));right:10px;transform:none}
  .contact-rail-toggle{writing-mode:horizontal-tb;width:46px;height:46px;border-radius:14px;font-size:11px;letter-spacing:.06em;padding:0}
  .contact-rail-panel{position:absolute;right:0;top:auto;bottom:56px;transform:translateY(8px);width:min(280px,80vw)}
  .contact-rail[data-open="true"] .contact-rail-panel{transform:translateY(0)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 12}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-legal-inner{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-note{max-width:none}
  .brand-note{letter-spacing:.2em}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-js="on"] [data-reveal]{opacity:1;transform:none}
}