/*
Theme Name: APPTUNE Corporate News
Theme URI: https://www.apptune.co.jp/
Author: APPTUNE
Description: APPTUNE corporate theme with video hero and WordPress post-based news section.
Version: 4.0
Text Domain: apptune-corporate-news
*/

:root{
  --bg:#05070d;
  --panel:#0b1020;
  --text:#ffffff;
  --muted:#b8c1d9;
  --blue:#00b7ff;
  --cyan:#57f0ff;
  --red:#e60012;
  --line:rgba(255,255,255,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Yu Gothic","YuGothic","Meiryo",sans-serif;background:var(--bg);color:var(--text);line-height:1.8}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:16px clamp(18px,4vw,56px);background:linear-gradient(180deg,rgba(0,0,0,.72),rgba(0,0,0,.2));backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-logo{display:flex;align-items:center;gap:14px;font-weight:800;letter-spacing:.18em}
.header-logo img{width:54px;height:54px;object-fit:contain;border-radius:12px;background:#fff;padding:4px}
.header-logo span{font-size:15px}
.nav{display:flex;gap:24px;font-size:13px;letter-spacing:.08em;color:#eaf6ff}
.nav a:hover{color:var(--cyan)}
.hero{position:relative;min-height:100vh;overflow:hidden;display:flex;align-items:center;padding:120px clamp(20px,6vw,90px) 70px}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:radial-gradient(circle at 70% 20%,rgba(0,183,255,.28),transparent 34%),linear-gradient(90deg,rgba(2,6,23,.92) 0%,rgba(2,6,23,.74) 46%,rgba(2,6,23,.42) 100%),linear-gradient(180deg,rgba(0,0,0,.3),#05070d 96%)}
.hero-inner{position:relative;z-index:2;width:min(1120px,100%)}
.hero-logo{width:220px;background:rgba(255,255,255,.96);border-radius:26px;padding:18px;margin-bottom:34px;box-shadow:0 24px 70px rgba(0,0,0,.45)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--cyan);font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;margin-bottom:18px}
.eyebrow::before{content:"";width:42px;height:2px;background:linear-gradient(90deg,var(--blue),var(--red))}
.hero h1{margin:0;font-size:clamp(42px,7vw,92px);line-height:1.05;letter-spacing:.06em;font-weight:900}
.hero h1 strong{display:block;background:linear-gradient(90deg,#fff,#6fefff,#fff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy{margin:28px 0 0;max-width:760px;font-size:clamp(17px,2.1vw,24px);color:#e8eefc;font-weight:600}
.hero-sub{max-width:720px;color:var(--muted);margin:18px 0 0;font-size:15px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:38px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-width:190px;padding:15px 26px;border-radius:999px;font-weight:800;letter-spacing:.08em;border:1px solid rgba(255,255,255,.22);transition:.25s}
.btn-primary{background:linear-gradient(90deg,var(--red),#ff404c);box-shadow:0 16px 44px rgba(230,0,18,.35)}
.btn-ghost{background:rgba(255,255,255,.08);backdrop-filter:blur(10px)}
.btn:hover{transform:translateY(-2px);filter:brightness(1.1)}
.section{padding:96px clamp(20px,6vw,90px);position:relative}
.section-title{margin:0 0 14px;font-size:clamp(30px,4.4vw,54px);line-height:1.2;letter-spacing:.04em}
.section-lead{max-width:820px;color:var(--muted);margin:0 0 42px}
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.035));border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:0 24px 70px rgba(0,0,0,.22)}
.card h3{margin:12px 0 10px;font-size:22px;line-height:1.4}
.card p{margin:0;color:var(--muted);font-size:14px}
.dark-band{background:radial-gradient(circle at 20% 20%,rgba(0,183,255,.16),transparent 30%),linear-gradient(180deg,#05070d,#090f1f)}
.label{display:inline-block;color:#fff;background:rgba(0,183,255,.16);border:1px solid rgba(87,240,255,.25);border-radius:999px;padding:5px 12px;font-size:12px;font-weight:800}
.news-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:34px}
.news-list{display:grid;gap:16px}
.news-item{display:grid;grid-template-columns:150px 1fr auto;gap:22px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}
.news-date{color:var(--cyan);font-weight:800;letter-spacing:.08em}
.news-title{font-size:20px;font-weight:800}
.news-excerpt{color:var(--muted);font-size:14px;margin-top:4px}
.news-more{color:#fff;border:1px solid rgba(255,255,255,.2);padding:8px 15px;border-radius:999px;font-size:12px;font-weight:800}
.news-archive{max-width:1000px;margin:0 auto;padding-top:140px}
.post-article{max-width:900px;margin:0 auto;padding:150px 20px 90px}
.post-article h1{font-size:clamp(32px,5vw,56px);line-height:1.25}
.post-meta{color:var(--cyan);font-weight:800;margin-bottom:24px}
.post-content{color:#e8eefc;font-size:17px}
.post-content p{margin:0 0 1.4em}
.cta{margin:0 clamp(20px,6vw,90px) 90px;padding:56px;border-radius:32px;background:linear-gradient(120deg,rgba(230,0,18,.92),rgba(0,183,255,.82));box-shadow:0 24px 80px rgba(0,0,0,.38)}
.footer{padding:42px clamp(20px,6vw,90px);border-top:1px solid var(--line);color:var(--muted);background:#03050a}
.footer-logo{display:flex;align-items:center;gap:14px;color:#fff;font-weight:900;letter-spacing:.14em;margin-bottom:10px}
.footer-logo img{width:46px;height:46px;object-fit:contain;background:#fff;border-radius:10px;padding:4px}
@media(max-width:900px){
  .nav{display:none}.header-logo img{width:44px;height:44px}.hero{padding:110px 20px 58px}.hero-logo{width:170px}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .news-head{display:block}.news-item{grid-template-columns:1fr;gap:8px}.news-more{width:max-content}
  .cta{padding:34px 24px;margin-left:20px;margin-right:20px}
}