/* =========================================================
   株式会社ICE BLUE コーポレートサイト
   ========================================================= */
:root{
  --navy:#0E1538; --navy2:#1A2355; --ice:#8FD4F5; --ice-deep:#2E7FB8;
  --frost:#F4F9FD; --ink:#1A2340; --ink-soft:#5A6584; --line:#DCE8F2;
  --gold:#C9A86A; --gold-deep:#A8874B; --gold-soft:rgba(201,168,106,.12);
  --line-green:#06C755;
  --wrap:1040px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:72px;}
body{
  font-family:'Zen Kaku Gothic New',sans-serif;color:var(--ink);
  background:#fff;line-height:1.9;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--ice-deep);}
img,svg{display:block;max-width:100%;}

/* ---------- 共通 ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;}
.sec{padding:96px 24px;}
.sec-alt{background:var(--frost);}
.sec-label{
  font-family:'Montserrat',sans-serif;font-size:.74rem;font-weight:600;
  letter-spacing:.32em;color:var(--ice-deep);text-transform:uppercase;
  display:flex;align-items:center;gap:12px;
}
.sec-label::before{content:"";width:28px;height:1px;background:currentColor;}
.sec-label.gold{color:var(--gold-deep);}
.sec h2{
  font-size:clamp(1.35rem,3vw,1.8rem);font-weight:700;margin:10px 0 14px;
  letter-spacing:.04em;color:var(--navy);
}
.sec-lead{color:var(--ink-soft);font-size:.95rem;max-width:640px;margin-bottom:44px;}

/* LINEボタン */
.btn-line{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--line-green);color:#fff;text-decoration:none;
  font-weight:700;font-size:.95rem;letter-spacing:.04em;
  padding:15px 34px;border-radius:999px;
  box-shadow:0 6px 20px rgba(6,199,85,.25);transition:transform .15s, box-shadow .15s;
}
.btn-line:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(6,199,85,.32);}
.btn-line svg{width:22px;height:22px;flex:none;}

/* ---------- ヘッダー ---------- */
.header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-in{
  max-width:var(--wrap);margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{
  font-family:'Montserrat',sans-serif;font-weight:700;font-size:1.1rem;
  color:var(--navy);letter-spacing:.06em;text-decoration:none;white-space:nowrap;
}
.brand span{color:var(--ice-deep);}
.header nav{display:flex;align-items:center;gap:22px;}
.header nav a{
  font-size:.84rem;font-weight:500;color:var(--ink-soft);text-decoration:none;
  white-space:nowrap;
}
.header nav a:hover{color:var(--navy);}
.header .nav-line{
  background:var(--line-green);color:#fff;padding:7px 16px;border-radius:999px;
  font-weight:700;font-size:.8rem;
}
.header .nav-line:hover{color:#fff;opacity:.9;}
@media(max-width:900px){
  .header nav a:not(.nav-line){display:none;}
}
@media(max-width:380px){
  .header-in{padding:12px 16px;}
  .brand{font-size:1rem;}
  .header .nav-line{padding:6px 12px;}
}

/* ---------- ヒーロー ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(ellipse 760px 420px at 85% -10%, rgba(143,212,245,.20), transparent 60%),
    linear-gradient(165deg, var(--navy) 0%, var(--navy2) 100%);
  padding:120px 24px 128px;
}
.hero-in{position:relative;z-index:1;max-width:var(--wrap);margin:0 auto;}
.hero-en{
  font-family:'Montserrat',sans-serif;font-size:.78rem;font-weight:600;
  letter-spacing:.34em;color:var(--ice);text-transform:uppercase;
}
.hero h1{
  font-size:clamp(1.85rem,5vw,3rem);font-weight:700;line-height:1.45;
  margin-top:18px;letter-spacing:.05em;
}
.hero-sub{
  margin-top:22px;color:rgba(222,240,252,.86);max-width:560px;font-size:1rem;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;}
.hero-tags li{
  list-style:none;font-size:.8rem;letter-spacing:.08em;
  border:1px solid rgba(143,212,245,.35);color:var(--ice);
  padding:5px 16px;border-radius:999px;
}
.hero-cta{margin-top:40px;}
.hero-deco{
  position:absolute;z-index:0;right:-140px;top:50%;transform:translateY(-50%);
  width:640px;height:640px;opacity:.55;pointer-events:none;
}
@media(max-width:760px){
  .hero{padding:88px 20px 96px;}
  .hero-deco{width:440px;height:440px;right:-200px;top:auto;bottom:-170px;transform:none;opacity:.35;}
}

/* ---------- 事業内容 ---------- */
.biz{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
@media(max-width:720px){.biz{grid-template-columns:1fr;}}
.biz-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:34px 30px 30px;box-shadow:0 2px 14px rgba(26,35,64,.04);
}
.biz-head{display:flex;align-items:center;gap:14px;}
.biz-icon{
  width:48px;height:48px;flex:none;border-radius:12px;
  display:grid;place-items:center;background:rgba(143,212,245,.14);color:var(--ice-deep);
}
.biz-icon svg{width:26px;height:26px;}
.biz-card .num{
  font-family:'Montserrat',sans-serif;font-weight:700;font-size:.78rem;
  color:var(--ice-deep);letter-spacing:.16em;
}
.biz-card h3{font-size:1.06rem;font-weight:700;color:var(--navy);line-height:1.5;}
.biz-card p{font-size:.88rem;color:var(--ink-soft);margin-top:16px;}
/* 時計カードだけシャンパンゴールド */
.biz-card.watch{border-color:rgba(201,168,106,.45);}
.biz-card.watch::before{
  content:"";position:absolute;left:30px;right:30px;top:0;height:2px;
  background:linear-gradient(90deg,var(--gold),rgba(201,168,106,0));
}
.biz-card.watch .biz-icon{background:var(--gold-soft);color:var(--gold-deep);}
.biz-card.watch .num{color:var(--gold-deep);}

/* ---------- 買取の特徴 ---------- */
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
@media(max-width:860px){.why{grid-template-columns:1fr;}}
.why-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px 28px 32px;
  border-top:2px solid var(--gold);
}
.why-icon{
  width:60px;height:60px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(201,168,106,.5);color:var(--gold-deep);background:var(--gold-soft);
}
.why-icon svg{width:30px;height:30px;}
.why-card .num{
  font-family:'Montserrat',sans-serif;font-size:.74rem;font-weight:600;letter-spacing:.2em;
  color:var(--gold-deep);margin-top:22px;
}
.why-card h3{font-size:1.04rem;font-weight:700;color:var(--navy);margin-top:4px;line-height:1.55;}
.why-card p{font-size:.88rem;color:var(--ink-soft);margin-top:12px;}

/* ---------- 買取の流れ ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:none;}
.flow li{list-style:none;position:relative;padding:0 14px;text-align:center;}
.flow li:not(:last-child)::after{
  content:"";position:absolute;top:38px;left:calc(50% + 46px);right:calc(-50% + 46px);
  height:1px;background:repeating-linear-gradient(90deg,var(--gold) 0 6px,transparent 6px 12px);
}
.flow-icon{
  width:76px;height:76px;margin:0 auto;border-radius:50%;
  display:grid;place-items:center;background:#fff;color:var(--navy);
  border:1px solid rgba(201,168,106,.6);box-shadow:0 0 0 6px var(--gold-soft);
}
.flow-icon svg{width:32px;height:32px;}
.flow .step{
  font-family:'Montserrat',sans-serif;font-size:.72rem;font-weight:700;letter-spacing:.22em;
  color:var(--gold-deep);margin-top:20px;
}
.flow h3{font-size:1.02rem;font-weight:700;color:var(--navy);margin-top:2px;}
.flow p{font-size:.85rem;color:var(--ink-soft);margin-top:8px;}
@media(max-width:760px){
  .flow{grid-template-columns:1fr;gap:0;}
  .flow li{
    display:grid;grid-template-columns:64px 1fr;column-gap:18px;text-align:left;
    padding:0 0 30px;
  }
  .flow li:last-child{padding-bottom:0;}
  .flow li:not(:last-child)::after{
    top:70px;bottom:6px;left:31px;right:auto;width:1px;height:auto;
    background:repeating-linear-gradient(180deg,var(--gold) 0 6px,transparent 6px 12px);
  }
  .flow-icon{width:64px;height:64px;grid-row:1 / span 3;margin:0;box-shadow:0 0 0 5px var(--gold-soft);}
  .flow-icon svg{width:28px;height:28px;}
  .flow .step{margin-top:6px;}
}
.flow-cta{
  margin-top:56px;padding:36px 28px;border-radius:16px;text-align:center;
  background:#fff;border:1px solid rgba(201,168,106,.4);
}
.flow-cta p{color:var(--ink-soft);font-size:.9rem;margin-bottom:20px;}

/* ---------- 運営サービス ---------- */
.service{
  background:linear-gradient(135deg,var(--navy),var(--navy2));
  border-radius:16px;color:#fff;padding:42px 38px;
  display:flex;flex-wrap:wrap;align-items:center;gap:28px;justify-content:space-between;
}
.service h3{font-size:1.25rem;font-weight:700;}
.service h3 small{
  display:block;font-family:'Montserrat',sans-serif;font-size:.74rem;font-weight:600;
  color:var(--ice);letter-spacing:.2em;margin-bottom:6px;
}
.service p{color:rgba(222,240,252,.85);font-size:.9rem;margin-top:10px;max-width:540px;}
.service a.btn{
  display:inline-block;background:#fff;color:var(--navy);text-decoration:none;
  font-weight:700;font-size:.92rem;padding:13px 30px;border-radius:999px;
  box-shadow:0 4px 16px rgba(0,0,0,.25);transition:transform .15s;
}
.service a.btn:hover{transform:translateY(-2px);}
@media(max-width:560px){.service{padding:32px 24px;}}

/* ---------- 会社概要 ---------- */
.spec{width:100%;border-collapse:collapse;background:#fff;border-top:1px solid var(--line);}
.spec th,.spec td{
  text-align:left;padding:18px 20px;border-bottom:1px solid var(--line);
  vertical-align:top;font-size:.93rem;
}
.spec th{
  width:11em;font-weight:700;color:var(--navy);white-space:nowrap;
  background:rgba(143,212,245,.08);
}
@media(max-width:560px){
  .spec th{width:7.5em;padding:14px 12px;white-space:normal;}
  .spec td{padding:14px 12px;font-size:.88rem;}
}

/* ---------- 許認可 ---------- */
.license-box{
  border:1px solid var(--line);border-left:4px solid var(--ice-deep);
  border-radius:10px;background:#fff;padding:26px 28px;font-size:.92rem;
}
.license-box b{color:var(--navy);}
.license-box p{color:var(--ink-soft);margin-top:8px;font-size:.86rem;}
.license-box .id-note{
  margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);
  color:var(--navy);font-weight:500;
}
@media(max-width:560px){.license-box{padding:22px 20px;}}

/* ---------- フッター ---------- */
.footer{
  background:var(--navy);color:rgba(222,240,252,.75);
  padding:44px 24px 36px;text-align:center;font-size:.82rem;
}
.footer .brand{color:#fff;display:inline-block;margin-bottom:10px;}
.footer .brand span{color:var(--ice);}
.footer-copy{margin-top:14px;font-size:.74rem;color:rgba(222,240,252,.45);}

/* ---------- スクロール演出（JS有効時のみ） ---------- */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease;}
.js .reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;transition:none;}
}