/* ============================================================
   GUGU SYSTEM — 3D GPS Machine Guidance
   Shared foundation: tokens, type, components
   Brand: Deep Navy + Signal Orange + Gold (on Wanted/Pretendard base)
   ============================================================ */

/* ---- Fonts ---- */
@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable.min.css");
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;900&family=Space+Grotesk:wght@400;500;600;700&display=swap");

:root{
  /* Navy scale */
  --navy-950:#070F1C;
  --navy-900:#0A1526;
  --navy-850:#0C1A2E;
  --navy-800:#0F2138;
  --navy-700:#163052;
  --navy-600:#1E3E66;
  --navy-500:#2C5285;

  /* Brand accents */
  --orange:#FF6A1A;
  --orange-600:#EF560A;
  --orange-700:#CC4708;
  --orange-soft:#FFE6D5;
  --gold:#F5B82E;
  --gold-600:#E0A314;
  --cyan:#37A9C8;

  /* Neutrals (light surfaces) */
  --paper:#FFFFFF;
  --paper-2:#F5F7FA;
  --paper-3:#EDF1F6;
  --ink:#0F1A2A;
  --ink-2:#33414F;
  --muted:#64748B;
  --muted-2:#94A3B4;
  --line:#E2E8F0;
  --line-2:#D2DBE6;

  /* On-dark text */
  --on-dark:#FFFFFF;
  --on-dark-2:#AFC0D4;
  --on-dark-3:#6E8199;
  --dark-line:rgba(255,255,255,0.10);
  --dark-line-2:rgba(255,255,255,0.16);

  /* Type */
  --sans:"Pretendard Variable","Noto Sans JP",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"Space Grotesk",ui-monospace,"SF Mono","Roboto Mono",monospace;

  /* Layout */
  --maxw:1240px;
  --pad:clamp(20px,5vw,64px);
  --radius:14px;
  --radius-lg:22px;

  /* Motion */
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--sans);color:var(--ink);background:var(--paper);
  line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  font-feature-settings:"tnum" 0;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--orange);color:#fff}

/* lang-aware Japanese tuning */
html[lang="ja"] body{font-family:"Noto Sans JP","Pretendard Variable",system-ui,sans-serif}

/* ---- Reusable wrappers ---- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
.section{padding-block:clamp(72px,11vw,150px)}

/* ---- Kicker / eyebrow ---- */
.kicker{
  display:inline-flex;align-items:center;gap:12px;
  font-family:var(--mono);font-size:16px;font-weight:600;letter-spacing:.15em;
  text-transform:uppercase;color:var(--orange);margin:0 0 22px;
}
.kicker::before{content:"";width:30px;height:2px;background:var(--orange);display:inline-block}
.kicker.on-dark{color:var(--gold)}
.kicker.on-dark::before{background:var(--gold)}

/* ---- Headings ---- */
.h-display{
  font-weight:800;line-height:1.04;letter-spacing:-.02em;
  font-size:clamp(34px,6vw,72px);margin:0;text-wrap:balance;word-break:keep-all;
}
.h-title{
  font-weight:800;line-height:1.1;letter-spacing:-.02em;
  font-size:clamp(28px,4.2vw,50px);margin:0;text-wrap:balance;word-break:keep-all;
}
.lead{font-size:clamp(16px,1.5vw,20px);line-height:1.7;color:var(--muted);max-width:60ch}
.on-dark .lead,.lead.on-dark{color:var(--on-dark-2)}

/* ---- Buttons ---- */
.btn{
  --bg:var(--orange);--fg:#fff;--bd:transparent;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 26px;border-radius:999px;border:1.5px solid var(--bd);
  background:var(--bg);color:var(--fg);font-weight:700;font-size:15px;letter-spacing:.01em;
  transition:transform .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn:hover{transform:translateY(-2px)}
.btn--primary{box-shadow:0 10px 26px -10px rgba(255,106,26,.7)}
.btn--primary:hover{background:var(--orange-600);box-shadow:0 16px 34px -12px rgba(255,106,26,.8)}
.btn--ghost{--bg:transparent;--fg:#fff;--bd:rgba(255,255,255,.34)}
.btn--ghost:hover{--bd:#fff;background:rgba(255,255,255,.07)}
.btn--dark{--bg:var(--navy-900);--fg:#fff}
.btn--dark:hover{--bg:var(--navy-700)}
.btn--gold{--bg:var(--gold);--fg:var(--navy-900)}
.btn--gold:hover{--bg:var(--gold-600)}
.btn--lg{padding:18px 32px;font-size:16px}
.btn--block{display:flex;width:100%}

/* ---- Pills / chips ---- */
.pill{
  display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
  font-family:var(--mono);font-size:12.5px;font-weight:600;letter-spacing:.04em;
  padding:7px 13px;border-radius:999px;border:1px solid var(--line-2);color:var(--ink-2);background:var(--paper);
}
.pill.on-dark{border-color:var(--dark-line-2);color:var(--on-dark-2);background:rgba(255,255,255,.04)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 4px rgba(255,106,26,.18)}
.dot--live{background:#2ED47A;box-shadow:0 0 0 4px rgba(46,212,122,.2);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px rgba(46,212,122,.25)}50%{box-shadow:0 0 0 7px rgba(46,212,122,0)}}

/* ---- Dark section base ---- */
.dark{background:var(--navy-900);color:var(--on-dark)}
.dark .h-display,.dark .h-title,.dark h1,.dark h2,.dark h3{color:#fff}

/* ============================================================
   Header / Nav (shared)
   ============================================================ */
.nav{position:fixed;inset:0 0 auto 0;z-index:80;transition:background .35s var(--ease),box-shadow .35s,border-color .35s}
.nav__bar{display:flex;align-items:center;gap:28px;height:74px}
.nav__logo{height:30px;width:auto}
.nav__links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav__link{
  position:relative;padding:9px 14px;border-radius:8px;font-weight:600;font-size:15px;
  color:var(--on-dark-2);transition:color .2s,background .2s;
}
.nav__link:hover{color:#fff}
.nav__actions{display:flex;align-items:center;gap:14px;margin-left:8px}

/* lang switch */
.lang{display:flex;align-items:center;gap:2px;border:1px solid var(--dark-line-2);border-radius:999px;padding:3px}
.lang button{
  border:0;background:transparent;color:var(--on-dark-3);font-weight:700;font-size:12.5px;
  padding:5px 10px;border-radius:999px;font-family:var(--mono);transition:.2s;
}
.lang button.is-active{background:var(--orange);color:#fff}
.lang button:hover:not(.is-active){color:#fff}

/* solid (scrolled) state — set via .is-solid */
.nav.is-solid{background:rgba(9,18,33,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--dark-line)}

/* light nav variant (Direction B default) */
.nav--light{background:rgba(255,255,255,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav--light .nav__link{color:var(--ink-2)}
.nav--light .nav__link:hover{color:var(--ink)}
.nav--light .lang{border-color:var(--line-2)}
.nav--light .lang button{color:var(--muted)}
.nav--light .lang button.is-active{background:var(--navy-900);color:#fff}

/* mobile menu button */
.nav__burger{display:none;margin-left:auto;width:44px;height:44px;border:0;background:transparent;flex-direction:column;gap:5px;align-items:center;justify-content:center}
.nav__burger span{width:22px;height:2px;background:currentColor;color:#fff;transition:.3s}
.nav--light .nav__burger span{color:var(--ink)}

.drawer{position:fixed;inset:0;z-index:90;background:var(--navy-950);display:flex;flex-direction:column;padding:90px var(--pad) 40px;
  transform:translateX(100%);transition:transform .4s var(--ease);visibility:hidden}
.drawer.is-open{transform:none;visibility:visible}
.drawer a{font-size:24px;font-weight:700;color:#fff;padding:16px 0;border-bottom:1px solid var(--dark-line)}
.drawer__close{position:absolute;top:24px;right:var(--pad);width:44px;height:44px;border:0;background:transparent;color:#fff;font-size:30px;line-height:1}
.drawer .lang{align-self:flex-start;margin-top:24px}

/* ============================================================
   Stats / counters (shared)
   ============================================================ */
.stat__num{font-family:var(--mono);font-weight:700;line-height:1;letter-spacing:-.02em;font-size:clamp(40px,5.5vw,66px)}
.stat__num .u{color:var(--orange);font-size:.6em;margin-left:2px}
.stat__label{margin-top:10px;font-size:14px;font-weight:600;color:var(--muted);letter-spacing:.01em}
.dark .stat__label{color:var(--on-dark-3)}
.dark .stat__num .u{color:var(--gold)}

/* ============================================================
   Reveal animation (shared) — JS toggles .in
   ============================================================ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.instant{transition:none !important}
.reveal[data-d="1"]{transition-delay:.08s}
.reveal[data-d="2"]{transition-delay:.16s}
.reveal[data-d="3"]{transition-delay:.24s}
.reveal[data-d="4"]{transition-delay:.32s}
.reveal[data-d="5"]{transition-delay:.4s}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ============================================================
   Image placeholder helper
   ============================================================ */
.ph{background:repeating-linear-gradient(45deg,var(--paper-3),var(--paper-3) 12px,var(--paper-2) 12px,var(--paper-2) 24px);
  display:flex;align-items:center;justify-content:center;color:var(--muted);font-family:var(--mono);font-size:13px}

/* ============================================================
   Modal (simulator) — shared
   ============================================================ */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:24px}
.modal.is-open{display:flex}
.modal__scrim{position:absolute;inset:0;background:rgba(6,12,22,.74);backdrop-filter:blur(6px)}
.modal__panel{position:relative;width:min(720px,100%);background:var(--navy-850);border:1px solid var(--dark-line-2);
  border-radius:var(--radius-lg);padding:40px;color:#fff;text-align:center;box-shadow:0 40px 90px -30px rgba(0,0,0,.7)}
.modal__close{position:absolute;top:16px;right:16px;width:40px;height:40px;border:0;border-radius:50%;
  background:rgba(255,255,255,.08);color:#fff;font-size:22px;line-height:1}
.modal__close:hover{background:rgba(255,255,255,.16)}

/* Simulator fullscreen overlay */
body.sim-overlay-open{overflow:hidden}
.sim-overlay{position:fixed;inset:0;z-index:150;display:none;grid-template-rows:auto 1fr;background:#020711;color:#fff}
.sim-overlay.is-open{display:grid}
.sim-overlay__bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:8px 18px;
  background:rgba(5,11,19,.94);border-bottom:1px solid rgba(255,255,255,.12);box-shadow:0 18px 42px -28px rgba(0,0,0,.9);backdrop-filter:blur(10px)}
.sim-overlay__bar strong{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase}
.sim-overlay__close{width:40px;height:40px;border:1px solid rgba(255,255,255,.2);border-radius:999px;background:rgba(255,255,255,.08);
  color:#fff;font-size:28px;line-height:36px;cursor:pointer;transition:background .2s ease,border-color .2s ease,transform .2s ease}
.sim-overlay__close:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.34);transform:translateY(-1px)}
.sim-overlay__frame{width:100%;height:100%;border:0;background:#000}

/* Patent image lightbox */
.patent-lightbox{position:fixed;inset:0;z-index:130;display:none;place-items:center;padding:clamp(18px,4vw,48px)}
.patent-lightbox.is-open{display:grid}
.patent-lightbox__scrim{position:absolute;inset:0;background:rgba(6,12,22,.82);backdrop-filter:blur(7px);cursor:zoom-out}
.patent-lightbox__panel{position:relative;z-index:1;margin:0;max-width:min(860px,92vw);max-height:90vh;cursor:zoom-out}
.patent-lightbox__panel img{display:block;width:auto;max-width:100%;max-height:82vh;margin:auto;border-radius:12px;background:#fff;box-shadow:0 34px 90px -26px rgba(0,0,0,.78)}
.patent-lightbox__panel figcaption{margin-top:14px;text-align:center;color:#fff;font-weight:700;font-size:15px}

/* ============================================================
   Footer (shared)
   ============================================================ */
.foot{background:var(--navy-950);color:var(--on-dark-2);padding-block:64px 36px}
.foot--compact{padding-block:22px}
.foot__top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid var(--dark-line)}
.foot__logo{height:34px;margin-bottom:20px}
.foot__desc{font-size:14.5px;line-height:1.7;color:var(--on-dark-3);max-width:34ch}
.foot__h{font-size:12px;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--on-dark-3);margin:0 0 16px}
.foot__row{display:flex;gap:10px;font-size:15px;margin-bottom:12px;color:var(--on-dark-2)}
.foot__row svg{width:18px;height:18px;flex:none;color:var(--gold);margin-top:2px}
.foot__row a:hover{color:#fff}
.foot__bottom{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;padding-top:28px;font-size:13px;color:var(--on-dark-3)}
.foot--compact .foot__bottom{padding-top:0}
.foot__bottom a:hover{color:#fff}

/* ============================================================
   Responsive (shared)
   ============================================================ */
@media (max-width:960px){
  .nav__links,.nav__actions{display:none}
  .nav__burger{display:flex}
  .foot__top{grid-template-columns:1fr;gap:36px}
}