@charset "UTF-8";
/* =============================================================================
   碧空軌道システムズ(架空)─ 制作見本のスタイル
   外部フォント・外部CSS・外部画像を1つも読み込まない。端末にある書体だけで組む。
   ========================================================================== */

:root{
  --bg:#0a1119;            /* 宇宙側(いちばん暗い) */
  --bg2:#0e1822;
  --bg3:#132030;
  --ink:#e6edf4;
  --dim:#a9bacb;
  --dim2:#6d8093;
  --line:rgba(150,185,215,.17);
  --line2:rgba(150,185,215,.32);
  --cyan:#5fd0e8;          /* 主調:計器の青 */
  --amber:#e9b45f;         /* 従属:数値・注意 */
  --sans:"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","YuGothic",
         "Noto Sans JP",Meiryo,system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",
         "MS Gothic",monospace;
  --pad:clamp(18px,4vw,40px);
  --wrap:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.9;
  letter-spacing:.02em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg,canvas{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.5;letter-spacing:.01em}
p{margin:0 0 1.5em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}

/* ------------------------------------------------------------------ ヘッダ */
.site-head{
  position:sticky;top:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px var(--pad);
  background:rgba(10,17,25,.82);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand .mark{width:34px;height:34px;flex:none}
.brand b{display:block;font-size:.98rem;font-weight:600;letter-spacing:.16em}
.brand small{display:block;font-family:var(--mono);font-size:.56rem;letter-spacing:.26em;color:var(--dim2)}
.nav{display:flex;align-items:center;gap:clamp(12px,2vw,30px)}
.nav a{font-size:.8rem;letter-spacing:.1em;color:var(--dim);padding:6px 0;position:relative;white-space:nowrap}
.nav a:hover{color:var(--ink)}
.nav a[aria-current="page"]{color:var(--cyan)}
.nav a[aria-current="page"]::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--cyan)
}
.btn-cta{
  border:1px solid var(--cyan);color:var(--cyan)!important;
  padding:8px 18px!important;border-radius:2px;transition:background .3s,color .3s
}
.btn-cta:hover{background:var(--cyan);color:#08121a!important}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:10px;cursor:pointer}
.burger i{display:block;width:22px;height:1.5px;background:var(--ink);transition:transform .3s,opacity .3s}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
@media(max-width:860px){
  .burger{display:flex}
  .nav{
    position:fixed;inset:57px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(10,17,25,.98);border-bottom:1px solid var(--line);
    padding:8px var(--pad) 22px;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity .28s,transform .28s,visibility .28s;
    max-height:calc(100svh - 57px);overflow:auto;
  }
  .nav.is-open{transform:none;opacity:1;visibility:visible}
  .nav a{padding:14px 2px;border-bottom:1px solid var(--line);font-size:.92rem}
  .btn-cta{text-align:center;margin-top:16px;border-bottom:1px solid var(--cyan)!important}
}

/* ------------------------------------------------------------------ 共通部品 */
.section{padding-block:clamp(64px,9vw,132px);position:relative}
.section--alt{background:var(--bg2)}
.section--deep{background:linear-gradient(180deg,var(--bg),var(--bg3))}
.eyebrow{
  font-family:var(--mono);font-size:.62rem;letter-spacing:.32em;color:var(--cyan);
  margin:0 0 1.4em;text-transform:uppercase
}
.h2{font-size:clamp(1.35rem,3.3vw,2.15rem);margin-bottom:.9em}
.lead{color:var(--dim);font-size:.95rem}
.grid{display:grid;gap:clamp(20px,3vw,42px)}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(min(100%,270px),1fr))}
.btn{
  display:inline-block;border:1px solid var(--line2);color:var(--ink);
  padding:13px 30px;font-size:.8rem;letter-spacing:.14em;border-radius:2px;
  transition:border-color .3s,color .3s,background .3s
}
.btn:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--fill{background:var(--cyan);border-color:var(--cyan);color:#08121a}
.btn--fill:hover{background:transparent;color:var(--cyan)}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* 罫の中に置く箱 */
.card{
  border:1px solid var(--line);background:linear-gradient(170deg,rgba(95,208,232,.045),transparent 60%);
  padding:clamp(22px,2.6vw,32px);border-radius:3px;position:relative;overflow:hidden
}
.card h3{font-size:1.02rem;margin-bottom:.8em}
.card p{font-size:.86rem;color:var(--dim);margin:0}
.card .no{
  font-family:var(--mono);font-size:.6rem;letter-spacing:.28em;color:var(--cyan);
  display:block;margin-bottom:1.4em
}

/* 数字の並び */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr));gap:1px;background:var(--line)}
.stats li{background:var(--bg);padding:clamp(22px,2.6vw,30px)}
.stats b{
  display:block;font-family:var(--mono);font-size:clamp(1.7rem,4.6vw,2.6rem);
  font-weight:500;color:var(--amber);line-height:1.2;font-variant-numeric:tabular-nums
}
.stats b i{font-style:normal;font-size:.46em;color:var(--dim);margin-left:.35em}
.stats span{display:block;font-size:.72rem;letter-spacing:.14em;color:var(--dim2);margin-top:.9em}

/* 表 */
.tblwrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;min-width:440px;font-size:.84rem}
th,td{border-bottom:1px solid var(--line);padding:14px 16px;text-align:left;vertical-align:top}
th{color:var(--cyan);font-weight:500;font-size:.74rem;letter-spacing:.14em;white-space:nowrap}
td .num{color:var(--amber)}
caption{caption-side:bottom;text-align:left;font-size:.72rem;color:var(--dim2);padding-top:14px}

/* 手順 */
.steps{counter-reset:st;display:grid;gap:1px;background:var(--line)}
.steps li{background:var(--bg);padding:clamp(20px,2.4vw,28px);display:grid;
  grid-template-columns:auto 1fr;gap:clamp(16px,2vw,28px);align-items:start}
.steps li::before{
  counter-increment:st;content:"0" counter(st);
  font-family:var(--mono);font-size:.9rem;color:var(--cyan);letter-spacing:.1em;padding-top:.2em
}
.steps h3{font-size:.98rem;margin-bottom:.6em}
.steps p{font-size:.84rem;color:var(--dim);margin:0}

/* 出現 */
.reveal{opacity:0;transform:translateY(20px);
  transition:opacity .85s cubic-bezier(.2,.7,.3,1),transform .85s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}

/* 見出しの上に細い目盛りを引く(計器らしさ) */
.tick{display:flex;align-items:center;gap:14px;margin-bottom:2.4em}
.tick::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--line2),transparent)}
.tick span{font-family:var(--mono);font-size:.62rem;letter-spacing:.3em;color:var(--dim2);white-space:nowrap}

/* ------------------------------------------------------------ 写真連番 */
.seq-stage{position:relative}
.seq-sticky{position:sticky;top:0;height:100svh;min-height:560px;
  display:grid;align-content:center;overflow:hidden}
.seq-layout{
  display:grid;gap:clamp(10px,2vw,44px);align-items:center;
  grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);
  max-width:1260px;width:100%;margin-inline:auto;padding-inline:var(--pad)
}
@media(max-width:940px){.seq-layout{grid-template-columns:1fr;gap:8px}}

.seq{
  position:relative;width:100%;aspect-ratio:4/3;
  max-height:min(66svh,620px);margin-inline:auto;
  background:#0a1119;border:1px solid var(--line);border-radius:3px;overflow:hidden
}
.seq canvas,.seq .seq-poster{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block
}
.seq canvas{opacity:0;transition:opacity .5s ease}
.seq.is-ready canvas{opacity:1}
.seq::after{content:"";position:absolute;inset:0;pointer-events:none;
  box-shadow:inset 0 0 90px 10px rgba(6,11,17,.6)}
.seq-corner{
  position:absolute;left:12px;bottom:10px;z-index:3;font-family:var(--mono);
  font-size:.58rem;letter-spacing:.22em;color:rgba(230,237,244,.55);
  text-shadow:0 1px 6px rgba(0,0,0,.85);pointer-events:none
}
.seq-angle{
  position:absolute;right:12px;bottom:10px;z-index:3;font-family:var(--mono);
  font-size:.66rem;letter-spacing:.16em;color:rgba(95,208,232,.9);
  text-shadow:0 1px 6px rgba(0,0,0,.85);pointer-events:none;font-variant-numeric:tabular-nums
}
/* 読み込み中(白紙を出さない)。覆いは指を食べない。 */
.seq-load{
  position:absolute;inset:0;z-index:4;display:grid;place-content:center;gap:13px;
  background:linear-gradient(180deg,rgba(10,17,25,.5),rgba(10,17,25,.82));
  transition:opacity .5s ease,visibility .5s;text-align:center;pointer-events:none
}
.seq.is-ready .seq-load{opacity:0;visibility:hidden}
.seq-load b{display:block;font-family:var(--mono);font-size:.66rem;letter-spacing:.26em;color:var(--cyan);font-weight:500}
.seq-load .bar{width:min(46vw,190px);height:2px;background:rgba(150,185,215,.18);overflow:hidden}
.seq-load .bar i{display:block;height:100%;width:0;background:var(--cyan);transition:width .25s linear}
.seq-load small{font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;color:var(--dim2);font-variant-numeric:tabular-nums}
/* 「視差効果を減らす」設定のときの断り書き(黙って止めると壊れて見える) */
.seq-motion{
  position:absolute;left:0;right:0;bottom:0;z-index:5;display:flex;flex-wrap:wrap;
  gap:10px;align-items:center;justify-content:space-between;
  padding:11px 14px;background:rgba(8,14,20,.9);border-top:1px solid var(--line)
}
.seq-motion span{font-size:.66rem;letter-spacing:.05em;color:var(--dim);line-height:1.7;flex:1 1 190px}
.seq-motion button{
  flex:none;font-family:inherit;font-size:.68rem;letter-spacing:.14em;cursor:pointer;
  background:none;border:1px solid var(--cyan);color:var(--cyan);padding:8px 16px;border-radius:2px
}
.seq-motion button:hover{background:var(--cyan);color:#08121a}

.seq-copy{position:relative;min-height:1px}
.seq-hero{margin-bottom:clamp(16px,2.6vw,30px)}
.seq-hero h1{font-size:clamp(1.6rem,4.3vw,2.9rem);line-height:1.42;margin-bottom:.55em}
.seq-hero p{font-family:var(--mono);font-size:.64rem;letter-spacing:.3em;color:var(--cyan);margin:0}
.seq-caps{position:relative;min-height:clamp(160px,20vw,186px)}
.seq-cap{position:absolute;inset:0;opacity:0;transform:translateY(12px);
  transition:opacity .5s,transform .5s;pointer-events:none}
.seq-cap.is-on{opacity:1;transform:none}
.seq-cap .no{display:block;font-family:var(--mono);font-size:.6rem;letter-spacing:.3em;color:var(--cyan);margin-bottom:1em}
.seq-cap h2{font-size:clamp(1.02rem,2.3vw,1.38rem);margin-bottom:.7em}
.seq-cap p{font-size:.845rem;color:var(--dim);margin:0}
@media(max-width:940px){
  .seq-caps{min-height:224px}
  .seq{max-height:44svh}
  .seq-hero h1{font-size:clamp(1.35rem,6.6vw,1.95rem)}
}
.seq-progress{margin-top:24px;height:1px;background:var(--line);position:relative}
.seq-progress i{position:absolute;inset:0 auto 0 0;width:0;background:var(--cyan);transition:width .12s linear}
.scroll-hint{
  position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
  font-family:var(--mono);font-size:.56rem;letter-spacing:.3em;color:var(--dim2);
  display:flex;flex-direction:column;align-items:center;gap:8px
}
.scroll-hint i{display:block;width:1px;height:32px;
  background:linear-gradient(var(--cyan),transparent);animation:drop 2.1s infinite}
@keyframes drop{
  0%{transform:scaleY(0);transform-origin:top}
  45%{transform:scaleY(1);transform-origin:top}
  46%{transform-origin:bottom}
  100%{transform:scaleY(0);transform-origin:bottom}
}
/* 指で回せる版 */
.seq--drag{cursor:grab;touch-action:pan-y}
.seq--drag:active{cursor:grabbing}
.seq-dragtip{
  position:absolute;left:50%;top:12px;transform:translateX(-50%);z-index:3;
  font-size:.6rem;letter-spacing:.2em;color:rgba(230,237,244,.7);
  background:rgba(8,14,20,.55);padding:5px 13px;border:1px solid var(--line);border-radius:2px;
  transition:opacity .4s;pointer-events:none
}
.seq--drag.is-touched .seq-dragtip{opacity:0}

/* ------------------------------------------------------------ 機体カード */
.craft{
  display:block;border:1px solid var(--line);border-radius:3px;overflow:hidden;
  background:linear-gradient(170deg,rgba(95,208,232,.05),transparent 55%);
  transition:border-color .35s,transform .45s
}
.craft:hover{border-color:var(--cyan);transform:translateY(-4px)}
.craft .shot{aspect-ratio:4/3;display:grid;place-items:center;overflow:hidden;
  background:radial-gradient(62% 62% at 50% 46%,#152332,#0a1119 78%);border-bottom:1px solid var(--line)}
.craft .shot img{width:100%;height:100%;object-fit:cover}
.craft .meta{padding:22px clamp(18px,2.2vw,26px) 26px}
.craft .ref{font-family:var(--mono);font-size:.6rem;letter-spacing:.24em;color:var(--dim2);display:block;margin-bottom:1em}
.craft h3{font-size:1.02rem;margin-bottom:.6em}
.craft p{font-size:.82rem;color:var(--dim);margin-bottom:1.2em}
.craft .go{font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;color:var(--cyan)}
.craft .go::after{content:" →"}

/* 諸元表(製品ページ) */
.spec{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.spec div{background:var(--bg);display:grid;grid-template-columns:minmax(96px,34%) 1fr}
.spec dt{padding:13px 16px;font-size:.74rem;letter-spacing:.1em;color:var(--dim2);margin:0}
.spec dd{padding:13px 16px;margin:0;font-size:.86rem}

/* 沿革 */
.hist{border-left:1px solid var(--line);padding-left:clamp(18px,2.6vw,34px)}
.hist li{position:relative;padding-bottom:clamp(26px,3vw,40px)}
.hist li::before{
  content:"";position:absolute;left:calc(-1 * clamp(18px,2.6vw,34px) - 4px);top:.62em;
  width:7px;height:7px;border-radius:50%;background:var(--cyan)
}
.hist .y{font-family:var(--mono);font-size:.74rem;letter-spacing:.16em;color:var(--amber);display:block;margin-bottom:.5em}
.hist h3{font-size:.98rem;margin-bottom:.5em}
.hist p{font-size:.84rem;color:var(--dim);margin:0}

/* 問い合わせフォーム(送信先を持たない) */
.form{display:grid;gap:22px}
.field label{display:block;font-size:.76rem;letter-spacing:.12em;color:var(--dim);margin-bottom:.7em}
.field .req{color:var(--amber);font-size:.66rem;margin-left:.7em;font-family:var(--mono)}
.field input,.field textarea,.field select{
  width:100%;background:var(--bg2);border:1px solid var(--line);border-radius:2px;
  color:var(--ink);font-family:inherit;font-size:.92rem;padding:13px 15px;line-height:1.7
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--cyan);outline:none}
.field textarea{min-height:170px;resize:vertical}
.note{
  border:1px dashed var(--line2);border-radius:3px;padding:16px 18px;
  font-size:.78rem;color:var(--dim);background:rgba(95,208,232,.04)
}
details{border-bottom:1px solid var(--line)}
details summary{
  cursor:pointer;padding:18px 34px 18px 0;font-size:.92rem;position:relative;list-style:none
}
details summary::-webkit-details-marker{display:none}
details summary::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  color:var(--cyan);font-family:var(--mono);font-size:1.05rem
}
details[open] summary::after{content:"−"}
details p{font-size:.85rem;color:var(--dim);padding:0 0 20px}

/* CTA */
.cta{
  padding-block:clamp(70px,10vw,140px);text-align:center;
  background:radial-gradient(70% 120% at 50% 0%,rgba(95,208,232,.12),transparent 70%),var(--bg2)
}
.cta h2{font-size:clamp(1.4rem,3.6vw,2.3rem);margin-bottom:.8em}
.cta p{color:var(--dim);font-size:.9rem}

/* ------------------------------------------------------------------ フッタ */
.site-foot{background:#070d14;border-top:1px solid var(--line);padding-block:clamp(46px,6vw,76px)}
.foot-top{display:grid;gap:clamp(26px,4vw,54px);grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}
.foot-top h4{font-family:var(--mono);font-size:.62rem;letter-spacing:.26em;color:var(--cyan);margin-bottom:1.6em}
.foot-top li{margin-bottom:.95em;font-size:.82rem;color:var(--dim)}
.foot-top a:hover{color:var(--cyan)}
.disclaimer{
  margin-top:clamp(34px,4vw,56px);padding-top:26px;border-top:1px solid var(--line);
  font-size:.74rem;color:var(--dim2);line-height:1.95
}
.disclaimer b{color:var(--amber);font-weight:600}

/* 星(画像を使わず、影だけで点を打つ) */
.stars{position:absolute;inset:0;pointer-events:none;overflow:hidden;opacity:.55}
.stars i{
  position:absolute;width:1px;height:1px;background:#dfeaf5;border-radius:50%;
  box-shadow:0 0 3px 1px rgba(223,234,245,.35)
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}
@media print{
  .site-head,.seq-load,.scroll-hint,.burger{display:none}
  body{background:#fff;color:#000}
}