/*
 * DAISEN 汎用ページ スタイルシート
 * daisen-general/daisen-general.css
 */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
button{cursor:pointer;border:none;background:none;font-family:inherit}

:root{
  --color:   #00b4d8;
  --black:   #08080f;
  --dark:    #111120;
  --surface: #1a1a2e;
  --border:  #2a2a42;
  --white:   #ffffff;
  --off-w:   #e8e8f4;
  --muted:   #8888aa;
  --font-d:  'Montserrat',sans-serif;
  --font-b:  'Noto Sans JP',sans-serif;
  --ease:    cubic-bezier(0.16,1,0.3,1);
}

body.daisen-general{
  font-family:var(--font-b);
  background:var(--white);
  color:#333;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}

/* ========== HEADER ========== */
.dg-header{
  position:sticky;top:0;left:0;right:0;z-index:1000;
  background:rgba(8,8,15,.95);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  height:64px;
}
.dg-header__inner{
  max-width:1280px;margin:0 auto;padding:0 32px;
  height:100%;display:flex;align-items:center;gap:16px;
}
.dg-header__logo{
  display:flex;align-items:center;gap:10px;
  color:var(--white);font-family:var(--font-d);
  font-weight:900;font-size:1.1rem;letter-spacing:.14em;flex-shrink:0;
}
.dg-header__logo-mark{
  width:32px;height:32px;border-radius:6px;
  background:linear-gradient(135deg,#00c8e6,#0078ff);
  display:grid;place-items:center;
  font-size:.85rem;font-weight:900;color:var(--black);
}
.dg-header__nav{
  margin-left:auto;display:flex;gap:2px;flex-wrap:wrap;
}
.dg-header__nav a{
  color:var(--muted);font-family:var(--font-d);
  font-size:.72rem;font-weight:600;letter-spacing:.06em;
  padding:6px 10px;border-radius:6px;
  white-space:nowrap;transition:color .3s,background .3s;
}
.dg-header__nav a:hover{color:var(--white);background:rgba(255,255,255,.07)}
.dg-header__toggle{
  display:none;flex-direction:column;gap:5px;
  padding:8px;margin-left:auto;
}
.dg-header__toggle span{
  display:block;width:24px;height:2px;
  background:var(--white);border-radius:1px;
  transition:transform .3s,opacity .3s;
}

/* ========== HERO ========== */
.dg-hero{
  position:relative;
  background-color:var(--surface);
  background-size:cover;background-position:center;
  min-height:300px;
  display:flex;align-items:flex-end;
  padding:0 0 56px;
  overflow:hidden;
}
.dg-hero::after{
  content:'';
  position:absolute;
  left:0;right:0;bottom:-1px;height:80px;
  background:linear-gradient(to top,var(--white),transparent);
  z-index:2;pointer-events:none;
}
.dg-hero__overlay{
  position:absolute;inset:0;
  background:linear-gradient(to bottom,rgba(8,8,15,.3),rgba(8,8,15,.75));
  z-index:1;
}
.dg-hero__content{
  position:relative;z-index:3;
  max-width:1280px;margin:0 auto;padding:0 40px;
  width:100%;
}
.dg-breadcrumb{
  font-family:var(--font-d);font-size:.7rem;font-weight:600;
  letter-spacing:.12em;color:rgba(255,255,255,.5);
  margin-bottom:16px;
}
.dg-breadcrumb a{color:rgba(255,255,255,.5);transition:color .3s}
.dg-breadcrumb a:hover{color:var(--white)}
.dg-hero__title{
  font-family:var(--font-d);
  font-size:clamp(1.8rem,4.5vw,3.5rem);
  font-weight:900;color:var(--white);
  line-height:1.15;letter-spacing:-.02em;
}
.dg-hero__title::after{
  content:'';display:block;width:48px;height:3px;
  background:var(--color);border-radius:2px;margin-top:16px;
}
.dg-hero__lead{
  font-size:1rem;color:rgba(255,255,255,.7);
  margin-top:14px;font-weight:300;line-height:1.7;
  max-width:600px;
}

/* ========== MAIN ========== */
.dg-main{
  background:var(--white);
  padding:72px 0 96px;
}
.dg-main__inner{
  max-width:860px;margin:0 auto;padding:0 40px;
}

/* ========== 記事コンテンツ ========== */
.dg-article{
  font-size:1rem;line-height:1.9;color:#333;
}
.dg-article h2{
  font-family:var(--font-d);
  font-size:1.5rem;font-weight:700;
  color:var(--black);
  margin:2.5em 0 1em;padding-bottom:.6em;
  border-bottom:2px solid var(--color);
}
.dg-article h3{
  font-family:var(--font-b);
  font-size:1.2rem;font-weight:700;
  color:var(--black);
  margin:2em 0 .8em;
  padding-left:16px;
  border-left:3px solid var(--color);
}
.dg-article h4{
  font-size:1rem;font-weight:700;
  color:var(--black);margin:1.5em 0 .6em;
}
.dg-article p{margin-bottom:1.4em}
.dg-article a{
  color:var(--color);border-bottom:1px solid rgba(0,180,216,.3);
  transition:border-color .3s,color .3s;
}
.dg-article a:hover{border-color:var(--color);color:var(--color)}
.dg-article ul,.dg-article ol{
  padding-left:24px;margin-bottom:1.4em;
}
.dg-article li{margin-bottom:.5em;line-height:1.8}
.dg-article ul li::marker{color:var(--color)}
.dg-article blockquote{
  border-left:4px solid var(--color);
  padding:16px 24px;margin:1.5em 0;
  background:rgba(0,180,216,.04);
  border-radius:0 8px 8px 0;
  font-style:italic;color:#555;
}
.dg-article img{
  border-radius:12px;margin:1.5em 0;
  box-shadow:0 8px 32px rgba(0,0,0,.12);
}
.dg-article table{
  width:100%;border-collapse:collapse;margin:1.5em 0;font-size:.9rem;
}
.dg-article th{
  background:var(--color);color:#fff;
  padding:10px 16px;font-weight:700;text-align:left;
}
.dg-article td{
  padding:10px 16px;border:1px solid #e0e0e0;
}
.dg-article tr:nth-child(even) td{background:#f8f8fc}
.dg-article pre{
  background:#0f0f1a;color:#e8e8f0;border-radius:10px;
  padding:20px;overflow-x:auto;font-size:.875rem;
  line-height:1.7;border-left:4px solid var(--color);
  margin:1.5em 0;
}
.dg-article hr{
  border:none;border-top:1px solid #e5e5f0;margin:2.5em 0;
}
.dg-article strong{color:var(--black)}
.dg-article em{color:var(--color)}

/* 画像キャプション */
.dg-article figcaption{
  text-align:center;font-size:.8rem;color:#999;margin-top:8px;
}

/* ========== PAGE NAV ========== */
.dg-page-nav{
  margin-top:64px;padding-top:32px;
  border-top:1px solid #e5e5f0;
}
.dg-page-nav__btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-d);font-size:.8rem;font-weight:700;
  color:var(--muted);letter-spacing:.1em;
  padding:10px 20px;border-radius:32px;
  border:1.5px solid #e0e0e0;
  transition:color .3s,border-color .3s;
}
.dg-page-nav__btn:hover{color:var(--color);border-color:var(--color)}
.dg-page-nav__arrow{font-size:1rem}

/* ========== FOOTER ========== */
.dg-footer{
  background:var(--black);color:var(--off-w);
  padding:56px 0 32px;font-family:var(--font-d);
}
.dg-footer__inner{
  max-width:1280px;margin:0 auto;padding:0 32px;
}
.dg-footer__nav{
  display:flex;flex-wrap:wrap;gap:8px 20px;
  justify-content:center;margin-bottom:40px;
}
.dg-footer__nav a{
  color:var(--muted);font-size:.78rem;font-weight:500;
  letter-spacing:.06em;transition:color .3s;
}
.dg-footer__nav a:hover{color:var(--white)}
.dg-footer__copy{
  text-align:center;font-size:.72rem;color:var(--muted);
  letter-spacing:.1em;border-top:1px solid var(--border);padding-top:28px;
}
.dg-footer__copy a{color:var(--off-w);font-weight:700;transition:color .3s}
.dg-footer__copy a:hover{color:#ffd700}

/* ========== スクロールバー ========== */
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:var(--black)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}

/* ========== RESPONSIVE ========== */
@media(max-width:900px){
  .dg-header__nav{display:none}
  .dg-header__toggle{display:flex}
  .dg-header__nav.is-open{
    display:flex;flex-direction:column;
    position:fixed;top:64px;left:0;right:0;
    background:rgba(8,8,15,.98);
    border-bottom:1px solid var(--border);
    padding:20px 24px;gap:4px;z-index:999;
  }
  .dg-header__nav.is-open a{
    padding:12px 16px;font-size:.9rem;color:var(--off-w);
  }
}
@media(max-width:768px){
  .dg-main__inner{padding:0 20px}
  .dg-hero__content{padding:0 20px}
  .dg-footer__inner{padding:0 20px}
  .dg-hero{min-height:220px;padding-bottom:40px}
  .dg-main{padding:48px 0 64px}
  .dg-article h2{font-size:1.3rem}
  .dg-article h3{font-size:1.1rem}
}
@media(max-width:480px){
  .dg-article{font-size:.95rem}
  .dg-article table{font-size:.8rem}
  .dg-article th,.dg-article td{padding:8px 10px}
}