/* =========================================================
   ASTREL — Moon themed Landing Page
   ========================================================= */
:root{
  --bg:#05060e;
  --bg2:#0a0c1c;
  --ink:#eaf0ff;
  --muted:#9aa6c8;
  --moon:#f4f1e4;
  --moon-blue:#cfe2ff;
  --gold:#f7e7b2;
  --accent:#8ab6ff;
  --accent2:#b69bff;
  --glow:rgba(150,190,255,.55);
  --maxw:1160px;
  --ease:cubic-bezier(.16,1,.3,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans JP",sans-serif;
  background:radial-gradient(120% 90% at 70% -10%, #14182f 0%, var(--bg2) 38%, var(--bg) 75%);
  color:var(--ink);
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
::selection{background:var(--accent);color:#06080f}

/* ---------- 背景キャンバス & 星のグロー ---------- */
#space{position:fixed;inset:0;z-index:0;pointer-events:none}
.star-glow{
  position:fixed;top:-26vh;left:50%;transform:translateX(-50%);width:90vw;height:70vw;z-index:0;
  background:radial-gradient(circle at 50% 40%, rgba(180,210,255,.16), rgba(182,155,255,.06) 36%, transparent 62%);
  filter:blur(10px);pointer-events:none;animation:breathe 9s ease-in-out infinite;
}
@keyframes breathe{0%,100%{transform:scale(1);opacity:.9}50%{transform:scale(1.08);opacity:1}}
.grain{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- ローダー ---------- */
#loader{
  position:fixed;inset:0;z-index:999;display:grid;place-content:center;justify-items:center;gap:26px;
  background:var(--bg);transition:opacity .8s ease,visibility .8s;
}
#loader.done{opacity:0;visibility:hidden}
.loader-star{
  width:70px;height:70px;position:relative;
  background:conic-gradient(from 0deg,transparent,var(--moon-blue),transparent 30%);
  -webkit-mask:radial-gradient(transparent 30%,#000 31%);mask:radial-gradient(transparent 30%,#000 31%);
  border-radius:50%;animation:spin 1.4s linear infinite;
}
.loader-star::after{
  content:"✦";position:absolute;inset:0;display:grid;place-items:center;font-size:30px;
  color:#fff;-webkit-mask:none;mask:none;filter:drop-shadow(0 0 14px var(--glow));
  animation:pulse 1.6s ease-in-out infinite;
}
.loader-text{letter-spacing:.7em;font-family:"Cormorant Garamond",serif;font-size:18px;color:var(--muted);padding-left:.7em;
  animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.4}50%{opacity:1}}

/* ---------- ヘッダー ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px clamp(20px,5vw,56px);transition:.4s var(--ease);
}
.site-header.scrolled{
  padding-top:14px;padding-bottom:14px;
  background:rgba(8,10,22,.6);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.brand{display:flex;align-items:center;gap:12px;font-family:"Cormorant Garamond",serif}
.brand-mark{
  width:22px;height:22px;display:grid;place-items:center;color:#fff;font-size:18px;
  filter:drop-shadow(0 0 10px var(--glow));
}
.brand-mark::before{content:"✦"}
.brand-name{letter-spacing:.36em;font-size:20px;padding-left:.36em}
.nav{display:flex;align-items:center;gap:34px;font-size:14px;letter-spacing:.08em}
.nav a{color:var(--muted);position:relative;transition:.3s}
.nav a:not(.nav-cta)::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;background:var(--accent);transition:.35s var(--ease)}
.nav a:hover{color:#fff}
.nav a:hover::after{width:100%}
.nav-cta{
  padding:9px 20px;border-radius:30px;color:#06080f !important;
  background:linear-gradient(120deg,var(--moon-blue),#fff);
  box-shadow:0 0 18px var(--glow);font-weight:500;
}
.nav-cta:hover{box-shadow:0 0 30px var(--glow);transform:translateY(-1px)}
.nav-toggle{display:none;background:none;border:0;flex-direction:column;gap:5px;cursor:pointer}
.nav-toggle span{width:26px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ---------- 共通 ---------- */
.section{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:clamp(90px,14vh,170px) clamp(20px,5vw,40px)}
.glow-text{
  background:linear-gradient(120deg,#fff,var(--moon-blue),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 22px rgba(180,210,255,.45));
}
.section-head{display:flex;align-items:flex-end;gap:24px;margin-bottom:54px}
.sec-no{
  font-family:"Cormorant Garamond",serif;font-size:clamp(56px,9vw,120px);line-height:.8;
  color:transparent;-webkit-text-stroke:1px rgba(150,190,255,.45);opacity:.8;
}
.sec-title{font-family:"Shippori Mincho",serif;font-weight:700;font-size:clamp(28px,4.6vw,52px);line-height:1.28}
.sec-title span{display:block}

/* ---------- ヒーロー ---------- */
.hero{
  position:relative;z-index:2;min-height:100svh;display:grid;place-content:center;text-align:center;
  padding:0 24px;overflow:hidden;
}
.hero-constellation{
  position:absolute;top:6%;left:50%;transform:translateX(-50%);
  width:min(72vw,640px);z-index:-1;animation:floaty 12s ease-in-out infinite;
}
.hero-constellation svg{width:100%;height:auto;overflow:visible}
.cst-line{
  stroke:rgba(150,190,255,.55);stroke-width:1.4;stroke-linecap:round;
  filter:drop-shadow(0 0 6px var(--glow));
  stroke-dasharray:1400;stroke-dashoffset:1400;
  animation:draw 3.2s var(--ease) .6s forwards;
}
.cst-stars circle{
  fill:#fff;filter:drop-shadow(0 0 8px var(--glow));
  transform-box:fill-box;transform-origin:center;
  animation:twinkle 3s ease-in-out infinite;
}
.cst-stars circle:nth-child(2n){animation-delay:.6s}
.cst-stars circle:nth-child(3n){animation-delay:1.2s}
.cst-stars circle:nth-child(6){fill:var(--gold);filter:drop-shadow(0 0 16px var(--gold))}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes twinkle{0%,100%{opacity:.5;transform:scale(.85)}50%{opacity:1;transform:scale(1.25)}}
@keyframes floaty{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-16px)}}
@keyframes spin{to{transform:rotate(360deg)}}

.hero-inner{position:relative;max-width:840px}
.hero-kicker{font-family:"Cormorant Garamond",serif;letter-spacing:.42em;color:var(--moon-blue);
  font-size:15px;text-transform:uppercase;margin-bottom:26px;padding-left:.42em}
.hero-title{font-family:"Shippori Mincho",serif;font-weight:700;font-size:clamp(38px,8vw,90px);
  line-height:1.18;letter-spacing:.02em;margin-bottom:30px}
.hero-title .line{display:block}
.hero-lead{color:var(--muted);font-size:clamp(15px,2vw,18px);font-weight:300;margin-bottom:42px}
.hero-actions{display:flex;gap:18px;justify-content:center;flex-wrap:wrap}

.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;
  padding:15px 38px;border-radius:40px;font-size:15px;letter-spacing:.06em;font-weight:500;
  overflow:hidden;transition:.4s var(--ease);
  background:transparent;border:0;cursor:pointer;font-family:inherit}
.btn span{position:relative;z-index:2}
.btn-primary{color:#06080f;background:linear-gradient(120deg,var(--moon-blue),#fff,var(--gold));
  box-shadow:0 0 26px var(--glow)}
.btn-primary::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,#fff,var(--gold),var(--moon-blue));
  opacity:0;transition:.4s}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 40px var(--glow)}
.btn-primary:hover::before{opacity:1}
.btn-ghost{color:var(--ink);border:1px solid rgba(150,190,255,.4)}
.btn-ghost::before{content:"";position:absolute;inset:0;background:rgba(150,190,255,.12);
  transform:scaleX(0);transform-origin:left;transition:.45s var(--ease)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--accent)}
.btn-ghost:hover::before{transform:scaleX(1)}

.scroll-hint{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);
  display:grid;justify-items:center;gap:10px;color:var(--muted);font-size:11px;letter-spacing:.3em}
.scroll-hint i{width:1px;height:46px;background:linear-gradient(var(--accent),transparent);position:relative;overflow:hidden}
.scroll-hint i::after{content:"";position:absolute;top:-50%;left:0;width:1px;height:50%;background:#fff;animation:drop 1.8s ease-in-out infinite}
@keyframes drop{to{top:120%}}

/* ---------- ABOUT ---------- */
.about-grid{display:grid;gap:60px}
.about-lead{font-size:clamp(17px,2.4vw,24px);font-family:"Shippori Mincho",serif;line-height:2;font-weight:500}
.about-lead em{font-style:italic;color:var(--gold);font-family:"Cormorant Garamond",serif}
.about-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.stat{padding:34px 20px;text-align:center;border:1px solid rgba(255,255,255,.08);border-radius:18px;
  background:linear-gradient(160deg,rgba(255,255,255,.04),rgba(255,255,255,.01));backdrop-filter:blur(6px)}
.stat b{display:block;font-family:"Cormorant Garamond",serif;font-size:clamp(40px,6vw,68px);line-height:1;
  background:linear-gradient(120deg,#fff,var(--moon-blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat small{color:var(--muted);font-size:13px;letter-spacing:.08em}

/* ---------- SERVICE ---------- */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{position:relative;padding:38px 34px;border-radius:22px;overflow:hidden;
  border:1px solid rgba(255,255,255,.08);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  backdrop-filter:blur(8px);transition:.5s var(--ease)}
.card::before{content:"";position:absolute;inset:0;opacity:0;transition:.5s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(150,190,255,.18),transparent 60%)}
.card:hover{transform:translateY(-8px);border-color:rgba(150,190,255,.4);
  box-shadow:0 20px 60px rgba(0,0,0,.45),0 0 40px rgba(150,190,255,.12)}
.card:hover::before{opacity:1}
.card-phase{font-size:40px;display:block;margin-bottom:18px;filter:drop-shadow(0 0 14px var(--glow))}
.card h3{font-family:"Shippori Mincho",serif;font-size:21px;margin-bottom:12px}
.card p{color:var(--muted);font-size:14.5px;font-weight:300}

/* ---------- COMPANY ---------- */
.company-table{display:grid;gap:0;border-top:1px solid rgba(255,255,255,.1)}
.company-table .row{display:grid;grid-template-columns:200px 1fr;gap:20px;
  padding:24px 8px;border-bottom:1px solid rgba(255,255,255,.1);transition:.3s}
.company-table .row:hover{background:rgba(150,190,255,.05)}
.company-table dt{color:var(--moon-blue);font-weight:500;letter-spacing:.06em;font-size:15px}
.company-table dd{color:var(--ink);font-weight:300;line-height:2}

/* ---------- CONTACT ---------- */
.contact{text-align:center;overflow:hidden}
.contact-star{
  position:absolute;bottom:-46%;left:50%;transform:translateX(-50%);
  width:min(120vw,900px);aspect-ratio:1;border-radius:50%;z-index:-1;
  background:radial-gradient(circle at 50% 30%,rgba(160,200,255,.16),rgba(182,155,255,.05) 42%,transparent 60%);
  filter:blur(6px);
}
.contact-title{font-family:"Shippori Mincho",serif;font-weight:700;
  font-size:clamp(36px,7vw,76px);line-height:1.2;margin:18px 0 24px}
.contact-lead{color:var(--muted);margin-bottom:44px;font-weight:300}
/* お問い合わせフォーム */
.contact-form{max-width:680px;margin:0 auto 50px;text-align:left;display:grid;gap:22px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:grid;gap:9px}
.field label{font-size:14px;letter-spacing:.04em;color:var(--ink);display:flex;align-items:center;gap:10px}
.req{font-size:10.5px;letter-spacing:.08em;color:#ffd9d9;background:rgba(255,90,90,.18);
  border:1px solid rgba(255,120,120,.4);padding:2px 8px;border-radius:30px;font-weight:500}
.contact-form input,
.contact-form textarea,
.contact-form select{
  width:100%;font:inherit;color:var(--ink);background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:14px 16px;
  transition:.3s var(--ease);outline:none;resize:vertical}
.contact-form input::placeholder,
.contact-form textarea::placeholder{color:rgba(154,166,200,.55)}
.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus{
  border-color:var(--accent);background:rgba(150,190,255,.07);
  box-shadow:0 0 0 3px rgba(138,182,255,.18),0 0 24px rgba(138,182,255,.12)}
.contact-form select{appearance:none;cursor:pointer}
.select-wrap{position:relative}
.select-wrap::after{content:"";position:absolute;right:18px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--moon-blue);border-bottom:2px solid var(--moon-blue);
  transform:translateY(-70%) rotate(45deg);pointer-events:none}
.contact-form select option{background:#0a0c1c;color:var(--ink)}
.contact-form .field.invalid input,
.contact-form .field.invalid textarea,
.contact-form .field.invalid select{border-color:rgba(255,110,110,.7);
  box-shadow:0 0 0 3px rgba(255,110,110,.14)}
.err{color:#ff9a9a;font-size:12.5px;min-height:0;line-height:1.5}
.err:empty{display:none}
.check{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--muted);
  cursor:pointer;justify-content:center;margin-top:4px}
.check input{appearance:none;width:20px;height:20px;border:1px solid rgba(255,255,255,.3);
  border-radius:6px;display:grid;place-items:center;cursor:pointer;transition:.25s;flex:none}
.check input:checked{background:linear-gradient(120deg,var(--moon-blue),#fff);border-color:transparent}
.check input:checked::after{content:"✓";color:#06080f;font-size:13px;font-weight:700}
.check .req{margin-left:6px}
.pp-link{color:var(--moon-blue);text-decoration:underline;text-underline-offset:3px}
.cf-submit{justify-self:center;margin-top:6px;min-width:240px;cursor:pointer;border:0}
.form-note{font-size:12px;color:var(--muted);text-align:center;line-height:1.7;opacity:.85}

/* 送信完了 */
.form-done{max-width:560px;margin:0 auto 50px;padding:48px 30px;text-align:center;
  border:1px solid rgba(150,190,255,.3);border-radius:22px;
  background:linear-gradient(160deg,rgba(150,190,255,.08),rgba(255,255,255,.02));
  animation:popin .6s var(--ease)}
@keyframes popin{from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:none}}
.done-star{font-size:46px;color:#fff;filter:drop-shadow(0 0 20px var(--glow));
  margin-bottom:14px;animation:twinkle 2.4s ease-in-out infinite}
.form-done h3{font-family:"Shippori Mincho",serif;font-size:24px;margin-bottom:14px}
.form-done p{color:var(--muted);font-weight:300;margin-bottom:28px}

.contact-list{list-style:none;display:grid;gap:14px;max-width:560px;margin:0 auto}
.contact-list li{display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:20px 28px;border-radius:16px;border:1px solid rgba(255,255,255,.08);
  background:linear-gradient(160deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  text-align:left;transition:.4s var(--ease)}
.contact-list li:hover{border-color:rgba(150,190,255,.4);transform:translateY(-3px)}
.c-label{font-family:"Cormorant Garamond",serif;letter-spacing:.2em;color:var(--moon-blue);font-size:15px}
.c-value{color:var(--muted);font-size:14.5px;font-weight:300;text-align:right}

/* ---------- フッター ---------- */
.site-footer{position:relative;z-index:2;text-align:center;padding:60px 24px 50px;
  border-top:1px solid rgba(255,255,255,.06)}
.footer-brand{display:inline-flex;align-items:center;gap:12px;font-family:"Cormorant Garamond",serif;
  letter-spacing:.3em;font-size:18px;margin-bottom:16px}
.footer-copy{color:var(--muted);font-size:12.5px;letter-spacing:.05em}

/* ---------- スクロール演出 ---------- */
.reveal,.reveal-up{opacity:0;transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal{transform:translateY(26px)}
.reveal-up{transform:translateY(40px)}
.reveal.in,.reveal-up.in{opacity:1;transform:none}
.hero .reveal{transition-delay:calc(var(--i,0)*.12s)}

/* ---------- レスポンシブ ---------- */
@media(max-width:760px){
  .nav{position:fixed;inset:0 0 0 auto;width:min(78vw,320px);flex-direction:column;justify-content:center;
    gap:30px;background:rgba(8,10,22,.96);backdrop-filter:blur(16px);transform:translateX(100%);
    transition:.5s var(--ease);font-size:18px}
  .nav.open{transform:none}
  .nav-toggle{display:flex;z-index:60}
  .nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.active span:nth-child(2){opacity:0}
  .nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .section-head{flex-direction:column;align-items:flex-start;gap:6px;margin-bottom:40px}
  .about-stats{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .company-table .row{grid-template-columns:1fr;gap:6px}
  .contact-list li{flex-direction:column;align-items:flex-start}
  .c-value{text-align:left}
  .field-row{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important}
}