/* 北星新潟柔道クラブ 共通デザイン（チラシ準拠：濃い青のグラデ×金×白・筆跡の帯・丸アイコン） */
:root{
  --blue-d:#071A47; --blue:#0B2A6B; --blue-m:#1B4BA0; --blue-l:#2F6BD0;
  --gold:#D4A93A; --gold-l:#F3D98B; --gold-d:#A9781F;
  --violet:#7B5BA6;
  --white:#fff; --mist:#F2F5FA; --ink:#14203D; --sub:#55607A;
  --line:#06C755;
  --mincho:'Shippori Mincho B1','Zen Old Mincho',serif;
  --gothic:'Zen Kaku Gothic New',sans-serif;
  --grad-blue:linear-gradient(135deg,#071A47 0%,#0B2A6B 45%,#1B4BA0 100%);
  --grad-gold:linear-gradient(180deg,#F6E2A0 0%,#E2B850 45%,#B8862B 100%);
}
*{box-sizing:border-box}
html{word-break:auto-phrase;line-break:strict;overflow-wrap:break-word;scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;background:#F7F9FC;color:var(--ink);font-family:var(--gothic);font-size:16px;line-height:1.95;letter-spacing:.04em;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
.zp{white-space:nowrap}
.wrap{width:min(1120px,100% - 48px);margin-inline:auto}
.narrow{width:min(820px,100% - 48px);margin-inline:auto}
.gold-text{background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent}
.photo-note{font-size:11px;color:var(--sub);margin-top:6px;text-align:right;letter-spacing:.08em}

/* セクションと見出し（チラシの青い筆の帯） */
.sec{padding:110px 0;position:relative;overflow-x:clip}
.sec.mist{background:linear-gradient(rgba(240,244,250,.86),rgba(240,244,250,.86)),url('../../src/tex-tatami.jpg') center/cover}
.sec.paper{background:#F7F9FC url('../../src/tex-white.jpg') center/cover}
.sec.blue{background:var(--blue-d) url('../../src/tex-blue.jpg') center/cover;color:#fff;overflow:hidden}
.sec.blue::before{content:"";position:absolute;inset:-10% -20% auto auto;width:70%;height:120%;background:url('../../src/brush-mass.png') center/contain no-repeat;opacity:.18;pointer-events:none;transform:rotate(-8deg);mix-blend-mode:screen}
.sec-head{text-align:center;margin-bottom:56px;position:relative}
.band{display:inline-block;position:relative;padding:18px 56px 20px;color:#fff;font-family:var(--mincho);font-weight:800;font-size:clamp(24px,3.2vw,36px);line-height:1.45;letter-spacing:.08em;margin:0;isolation:isolate}
.band::before{content:"";position:absolute;inset:-6px -24px;z-index:-1;background:url('../../src/brush-band.png') center/100% 100% no-repeat}
.band.gold{color:var(--blue-d)}
.band.gold::before{background-image:url('../../src/gold-band.png')}
.sec-head p{margin:26px auto 0;max-width:34em;color:var(--sub);font-size:16px}
.sec.blue .sec-head p{color:rgba(255,255,255,.82)}

/* 丸アイコン（ChatGPTで生成・透過） */
.ic{width:72px;height:72px;flex:none}

/* ボタン */
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:58px;padding:12px 26px;border-radius:4px;
  font-weight:700;text-decoration:none;letter-spacing:.08em;font-size:16px;transition:transform .2s,box-shadow .2s;white-space:nowrap}
.btn svg{width:20px;height:20px;flex:none}
.btn:hover{transform:translateY(-2px)}
.btn-line{background:var(--line);color:#fff;position:relative;overflow:hidden;box-shadow:0 5px 0 #04913f}
.btn-line::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.4) 50%,transparent 70%);transform:translateX(-120%);animation:shine 3.4s ease-in-out infinite}
@keyframes shine{0%,60%{transform:translateX(-120%)}100%{transform:translateX(120%)}}
.btn-blue{background:var(--grad-blue);color:#fff;box-shadow:0 5px 0 #04112f}
.btn-gold{background:var(--grad-gold);color:var(--blue-d);box-shadow:0 5px 0 #8a6214}
.btn-white{background:#fff;color:var(--blue);border:2px solid var(--blue)}
.btn-glass{background:rgba(255,255,255,.1);color:#fff;border:1.5px solid rgba(255,255,255,.55)}

/* 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:10px 28px;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);box-shadow:0 2px 16px rgba(7,26,71,.08)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--blue);font-family:var(--mincho);font-weight:800;font-size:20px;letter-spacing:.08em}
.logo .star{width:22px;height:22px;background:var(--grad-gold);clip-path:polygon(50% 0,61% 39%,100% 50%,61% 61%,50% 100%,39% 61%,0 50%,39% 39%)}
.logo .jd{color:var(--gold-d)}
.head-right{display:flex;align-items:center;gap:14px}
.badge{font-size:13px;font-weight:700;color:#fff;background:var(--grad-blue);padding:6px 14px;border-radius:999px}
.head-right .btn{min-height:44px;padding:8px 18px;font-size:14px;box-shadow:none}

/* フッター */
.site-footer{background:var(--blue-d) url('../../src/tex-blue.jpg') center/cover;color:rgba(255,255,255,.82);padding:56px 0 110px;font-size:14px}
.site-footer .logo{color:#fff;margin-bottom:14px}
.site-footer .logo .jd{color:var(--gold-l)}
.site-footer a{color:rgba(255,255,255,.82)}
.site-footer small{display:block;margin-top:24px;color:rgba(255,255,255,.5)}

/* スマホ下部固定バー */
.fixbar{position:fixed;left:0;right:0;bottom:0;z-index:60;display:none;grid-template-columns:1.4fr 1fr 1fr;gap:6px;padding:8px 10px calc(8px + env(safe-area-inset-bottom));
  background:rgba(7,26,71,.96);transition:transform .3s}
.fixbar a{display:flex;align-items:center;justify-content:center;gap:6px;min-height:48px;border-radius:8px;color:#fff;text-decoration:none;font-weight:700;font-size:14px}
.fixbar svg{width:18px;height:18px}
.fixbar .f-line{background:var(--line)}
.fixbar .f-tel,.fixbar .f-mail{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25)}
.fixbar.hide{transform:translateY(110%)}

/* 下層ページ */
.page-main{padding:120px 0 80px}
.page-main h1{font-family:var(--mincho);color:var(--blue);font-size:30px;margin:0 0 32px}
.page-main h2{font-family:var(--mincho);color:var(--blue);font-size:20px;margin:40px 0 10px}

@media (max-width:768px){
  body{font-size:15px}
  .sec{padding:72px 0}
  .sec-head{margin-bottom:36px}
  .band{padding:14px 30px 16px;font-size:clamp(21px,6vw,26px)}
  .band::before{inset:-4px -14px}
  .sec-head p{font-size:15px}
  .wrap,.narrow{width:calc(100% - 32px)}
  .site-header{padding:8px 14px}
  .logo{font-size:16px}
  .head-right .badge{display:none}
  .head-right .btn{min-height:38px;padding:6px 12px;font-size:13px;width:auto}
  .fixbar{display:grid}
  .btn{width:100%}
  .ic{width:56px;height:56px}
}
@media (max-width:360px){.logo{font-size:14px;letter-spacing:.02em}.head-right .btn{padding:6px 10px}}

/* 筆文字の大きな透かし（Yuji Boku） */
.wm{position:absolute;font-family:'Yuji Boku',var(--mincho);line-height:1;pointer-events:none;user-select:none;z-index:0}
.sec>.wrap,.sec>.narrow{position:relative;z-index:1}

/* ===== 見出し：左寄せ＋金の筆の下線＋大きな筆文字の透かし（中央の帯の繰り返しをやめる） ===== */
.hd{position:relative;margin:0 0 48px;max-width:760px}
.hd .kicker{display:flex;align-items:center;gap:10px;font-weight:700;font-size:14px;letter-spacing:.24em;color:var(--blue-m);margin-bottom:12px}
.hd .kicker::before{content:"";width:34px;height:2px;background:var(--gold)}
.hd h2{font-family:var(--mincho);font-weight:800;color:var(--blue-d);font-size:clamp(28px,3.8vw,46px);line-height:1.4;letter-spacing:.06em;margin:0;position:relative;display:inline-block;padding-bottom:18px}
.hd h2::after{content:"";position:absolute;left:-6px;right:-30px;bottom:-6px;height:26px;background:url('../../src/gold-line.png') left center/100% 100% no-repeat}
.hd p{margin:24px 0 0;color:var(--sub);max-width:34em}
.sec.blue .hd .kicker{color:var(--gold-l)}
.sec.blue .hd h2{color:#fff}
.sec.blue .hd p{color:rgba(255,255,255,.8)}
.hd.center{margin-inline:auto;text-align:center}
.hd.center .kicker{justify-content:center}
.wm{font-size:clamp(220px,30vw,440px);color:var(--blue-d);opacity:.05;top:40px;right:-2vw}
.sec.blue .wm{color:#fff;opacity:.06}
/* 斜めの切り替え（青いセクション） */
.slant{clip-path:polygon(0 70px,100% 0,100% calc(100% - 70px),0 100%);margin:-70px 0;padding:180px 0}
@media (max-width:768px){
  .hd{margin-bottom:32px}
  .hd h2{font-size:clamp(25px,7vw,32px)}
  .hd h2::after{height:18px;right:-14px}
  .slant{clip-path:polygon(0 34px,100% 0,100% calc(100% - 34px),0 100%);margin:-34px 0;padding:110px 0}
  .wm{font-size:200px;top:20px;opacity:.05}
}