/* =========================================================
   協賛スポンサーページ  style.css
   既存LP「まぜこぜの社会をエンターテイメントでめざす！」の
   デザインシステム（ピンク×和フォント／水彩の背景）を踏襲
   ========================================================= */

:root{
  --pink:#e8336f; --pink-d:#c21f58; --pink-l:#fde3ec; --pink-ll:#fff4f7;
  --orange:#f08a1c; --blue:#2f7fc1; --ink:#2b2226; --ink2:#5d5157;
  --cream:#fffaf6; --gold:#b8894a;
  --r:22px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Zen Maru Gothic",sans-serif;color:var(--ink);background:var(--cream);line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
.mincho{font-family:"Zen Old Mincho",serif}
.hand{font-family:"Klee One",cursive}
.grad-txt{background:linear-gradient(90deg,var(--pink) 0%,var(--pink) 45%,var(--orange) 46%,var(--orange) 70%,var(--pink) 71%);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---- 水彩の背景 ---- */
.wash{position:relative;isolation:isolate}
.wash::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
   radial-gradient(40% 30% at 8% 12%, rgba(255,170,200,.45), transparent 70%),
   radial-gradient(35% 28% at 95% 20%, rgba(255,214,150,.40), transparent 70%),
   radial-gradient(40% 30% at 85% 90%, rgba(170,210,255,.40), transparent 70%),
   radial-gradient(30% 25% at 10% 85%, rgba(190,235,190,.35), transparent 70%);}

/* ---- ヘッダー ---- */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,250,246,.88);backdrop-filter:blur(10px);border-bottom:1px solid rgba(232,51,111,.12)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:14px}
.hdr .logo{font-weight:900;font-size:15px;letter-spacing:.04em;line-height:1.3}
.hdr .logo b{color:var(--pink)}
.hdr nav{display:flex;gap:22px;font-size:14px;font-weight:700}
.hdr nav a{text-decoration:none;color:var(--ink2)}
.hdr nav a:hover{color:var(--pink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:900;border-radius:999px;transition:transform .2s, box-shadow .2s;cursor:pointer;border:none}
.btn:hover{transform:translateY(-2px)}
.btn-pink{background:linear-gradient(135deg,#f0477f,var(--pink-d));color:#fff;box-shadow:0 8px 22px -8px rgba(194,31,88,.6)}
.btn-sm{padding:9px 18px;font-size:13px}
.btn-lg{padding:20px 40px;font-size:19px;min-width:300px}
.btn-line{background:#fff;color:var(--pink-d);border:2px solid var(--pink)}
@media(max-width:820px){.hdr nav{display:none}}

/* ---- ヒーロー ---- */
.hero{padding:56px 0 40px;overflow:hidden}
.hero .wrap{text-align:center}
.hero .eyebrow{display:inline-block;font-family:"Klee One",cursive;color:var(--pink);font-size:16px;letter-spacing:.14em;font-weight:700}
.hero h1{font-family:"Zen Old Mincho",serif;font-weight:900;line-height:1.35;margin:14px 0 8px;font-size:clamp(30px,5vw,56px);color:var(--pink-d)}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero .lead{margin-top:10px;color:var(--ink2);font-weight:700;font-size:clamp(15px,1.9vw,18px)}
.hero .event{margin-top:22px;display:inline-flex;flex-wrap:wrap;justify-content:center;gap:8px 22px;background:#fff;border-radius:var(--r);padding:16px 26px;box-shadow:0 18px 40px -26px rgba(120,30,60,.4)}
.hero .event b{color:var(--pink-d);font-family:"Zen Old Mincho",serif}
.hero .event span{font-weight:700;font-size:15px;color:var(--ink2)}
.hero-cta{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;justify-content:center}

/* ---- セクション共通 ---- */
section{padding:84px 0}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head .en{font-family:"Klee One",cursive;color:var(--pink);font-size:18px;letter-spacing:.1em}
.sec-head h2{font-family:"Zen Old Mincho",serif;font-weight:900;font-size:clamp(28px,4.4vw,42px);line-height:1.4;text-wrap:balance}
.sec-head h2 em{font-style:normal;color:var(--pink-d)}
.sec-head p{margin-top:12px;color:var(--ink2);font-weight:500}
@media(max-width:820px){section{padding:60px 0}}

/* ---- 特典のご案内（導入） ---- */
.intro{background:#fff;text-align:center}
.intro .copy{font-family:"Zen Old Mincho",serif;font-weight:900;font-size:clamp(22px,3.3vw,34px);line-height:1.7}
.intro .copy .p{color:var(--pink-d)}
.intro .body{max-width:680px;margin:26px auto 0;color:var(--ink2);font-size:16px;text-wrap:pretty}

/* ---- 全プラン共通特典 ---- */
.common-band{background:linear-gradient(180deg,#fff, #fff6f0)}
.common-box{max-width:760px;margin:0 auto;background:#fff;border:2px dashed var(--pink);border-radius:var(--r);padding:28px 30px;box-shadow:0 18px 40px -30px rgba(120,30,60,.4);text-align:center}
.common-box h3{font-family:"Zen Old Mincho",serif;color:var(--pink-d);font-size:clamp(20px,3vw,26px);font-weight:900;line-height:1.5}
.common-list{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:20px}
.common-list li{display:inline-flex;align-items:center;gap:8px;background:var(--pink-ll);border:1.5px solid var(--pink);color:var(--pink-d);font-weight:900;border-radius:999px;padding:10px 22px;font-size:15px}
.common-list li .ck{flex:none;width:20px;height:20px;border-radius:50%;background:var(--pink);display:grid;place-items:center}
.common-list li .ck svg{width:12px;height:12px}
.common-note{margin-top:18px;font-size:13.5px;color:var(--ink2);font-weight:600}

/* ---- プランカード ---- */
.plans{background:#fff}
.plan-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.plan{position:relative;background:var(--cream);border:2px solid var(--pink-l);border-radius:var(--r);padding:30px 28px 28px;display:flex;flex-direction:column;box-shadow:0 20px 46px -32px rgba(120,30,60,.5);transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease}
.plan:hover{transform:translateY(-4px);box-shadow:0 28px 56px -30px rgba(120,30,60,.55);border-color:var(--pink)}
.plan.feature{border-color:var(--pink);background:linear-gradient(180deg,#fff, #fff4f8)}
.plan .ribbon{position:absolute;top:-14px;right:22px;background:linear-gradient(135deg,#f0477f,var(--pink-d));color:#fff;font-weight:900;font-size:13px;letter-spacing:.05em;padding:7px 18px;border-radius:999px;box-shadow:0 10px 22px -10px rgba(194,31,88,.7)}
.plan .price-head{text-align:center;padding-bottom:20px;border-bottom:1px dashed #f1c6d5}
.plan .price-head .lbl{font-weight:900;color:var(--ink2);font-size:15px;letter-spacing:.04em}
.plan .price-head .amt{font-family:"Zen Old Mincho",serif;font-weight:900;color:var(--pink-d);line-height:1.1;margin-top:6px}
.plan .price-head .amt .num{font-size:clamp(44px,7vw,58px)}
.plan .price-head .amt .unit{font-size:22px;margin-left:4px}
.plan .price-head .amt .tax{display:block;font-family:"Zen Maru Gothic",sans-serif;font-size:13px;color:var(--ink2);font-weight:700;margin-top:6px}
.plan .benefits{list-style:none;display:grid;gap:12px;margin-top:22px;flex:1}
.plan .benefits li{display:flex;gap:12px;align-items:flex-start;font-weight:700;font-size:15px;line-height:1.6}
.plan .benefits li .ck{flex:none;width:26px;height:26px;border-radius:50%;background:var(--pink);display:grid;place-items:center;margin-top:1px}
.plan .benefits li .ck svg{width:14px;height:14px}
.plan .benefits li small{display:block;font-weight:600;font-size:12.5px;color:var(--ink2);line-height:1.5;margin-top:2px}
.plan .benefits li.is-common{color:var(--ink2)}
.plan .benefits li.is-common .ck{background:#c9b3bb}
.plan .foot{margin-top:22px}
.plan .foot .btn{width:100%;padding:15px 20px;font-size:15px}
.plan .common-tag{margin-top:16px;text-align:center;font-size:12.5px;font-weight:700;color:var(--pink-d);background:var(--pink-ll);border-radius:10px;padding:8px 10px}
@media(max-width:820px){.plan-grid{grid-template-columns:1fr;gap:20px}.plan{padding:26px 22px 24px}}

/* ---- 選び方ガイド ---- */
.guide{background:linear-gradient(180deg,#fff6f0,#fff)}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.guide-card{background:#fff;border-radius:var(--r);padding:24px 22px;box-shadow:0 18px 40px -30px rgba(120,30,60,.45);text-align:center}
.guide-card .ic{width:56px;height:56px;border-radius:50%;background:var(--pink-ll);display:grid;place-items:center;margin:0 auto 14px}
.guide-card .ic svg{width:28px;height:28px;stroke:var(--pink-d)}
.guide-card h3{font-family:"Zen Old Mincho",serif;font-size:19px;font-weight:900;color:var(--pink-d);line-height:1.5}
.guide-card p{margin-top:8px;font-size:14px;color:var(--ink2);font-weight:600}
@media(max-width:820px){.guide-grid{grid-template-columns:1fr}}

/* ---- お申込みの流れ ---- */
.flow{background:#fff}
.steps{max-width:760px;margin:0 auto;display:grid;gap:18px;counter-reset:step}
.step{position:relative;display:flex;gap:20px;align-items:flex-start;background:var(--cream);border-radius:var(--r);padding:22px 26px;box-shadow:0 16px 36px -30px rgba(120,30,60,.4)}
.step .num{flex:none;width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,#f0477f,var(--pink-d));color:#fff;font-family:"Zen Old Mincho",serif;font-size:22px;font-weight:900;display:grid;place-items:center;box-shadow:0 10px 22px -12px rgba(194,31,88,.7)}
.step h3{font-size:17px;font-weight:900;line-height:1.5}
.step p{margin-top:4px;font-size:14px;color:var(--ink2);font-weight:600}
@media(max-width:560px){.step{padding:18px 18px;gap:14px}}

/* ---- FAQ ---- */
.faq{background:linear-gradient(180deg,#fff,#fff6f0)}
.faq-list{max-width:800px;margin:0 auto;display:grid;gap:14px}
.faq-item{background:#fff;border-radius:18px;overflow:hidden;box-shadow:0 16px 36px -30px rgba(120,30,60,.4)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;gap:14px;align-items:center;padding:20px 24px;font-weight:900;font-size:16px;line-height:1.6}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .q{flex:none;width:30px;height:30px;border-radius:50%;background:var(--pink);color:#fff;font-family:"Zen Old Mincho",serif;display:grid;place-items:center;font-size:16px}
.faq-item summary .arrow{margin-left:auto;flex:none;width:22px;height:22px;color:var(--pink-d);transition:transform .3s ease}
.faq-item[open] summary .arrow{transform:rotate(180deg)}
.faq-item .a{padding:0 24px 22px 68px;color:var(--ink2);font-size:14.5px;font-weight:500;line-height:1.85}
@media(max-width:560px){.faq-item summary{padding:16px 18px;font-size:15px;gap:10px}.faq-item .a{padding:0 18px 18px 18px}}

/* ---- 最終CTA ---- */
.final{text-align:center;padding:84px 0}
.final .box{margin:0 auto;max-width:660px;background:#fff;border-radius:28px;padding:38px 28px;box-shadow:0 24px 50px -30px rgba(120,30,60,.5)}
.final .box h2{font-family:"Zen Old Mincho",serif;font-weight:900;font-size:clamp(24px,3.6vw,34px);color:var(--pink-d);line-height:1.5}
.final .box p.meta{margin:16px 0 26px;font-weight:700;color:var(--ink2);line-height:1.8}
.final .box .note{margin-top:18px;font-size:13px;color:var(--ink2);font-weight:600}

/* ---- フッター ---- */
footer{background:var(--ink);color:#fff;text-align:center;padding:30px 20px 100px;font-size:13.5px;line-height:1.9}
footer b{font-size:15px}
footer small{opacity:.6}
footer a{color:#ffd0e0;text-decoration:none}

/* ---- スマホ追尾CTA ---- */
.mcta{display:none}
@media(max-width:820px){
  .mcta{display:flex;position:fixed;left:12px;right:12px;bottom:12px;z-index:60;gap:10px;align-items:center;background:#fff;border-radius:999px;padding:8px 8px 8px 20px;box-shadow:0 10px 30px -10px rgba(0,0,0,.35)}
  .mcta .i{flex:1;font-size:12.5px;font-weight:700;line-height:1.35}
  .mcta .i b{color:var(--pink-d);font-size:15px}
  .mcta .btn{padding:12px 20px;font-size:14px}
}

/* ---- 画面右端のスクロールナビ ---- */
.scrollnav{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:70;display:flex;flex-direction:column;gap:10px;opacity:0;visibility:hidden;transition:opacity .35s ease, visibility .35s ease}
.scrollnav.on{opacity:1;visibility:visible}
.scrollnav-btn{width:46px;height:46px;border:none;border-radius:50%;cursor:pointer;display:grid;place-items:center;background:rgba(255,255,255,.92);color:var(--pink-d);border:2px solid var(--pink);backdrop-filter:blur(8px);box-shadow:0 10px 24px -12px rgba(194,31,88,.55);transition:transform .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease}
.scrollnav-btn svg{width:22px;height:22px}
.scrollnav-btn:hover{background:var(--pink-d);color:#fff;transform:scale(1.1);box-shadow:0 12px 28px -10px rgba(194,31,88,.7)}
.scrollnav-btn:active{transform:scale(.96)}
.scrollnav-btn:focus-visible{outline:3px solid var(--pink);outline-offset:2px}
@media(max-width:820px){
  .scrollnav{right:8px;gap:8px;top:auto;bottom:96px;transform:none}
  .scrollnav-btn{width:40px;height:40px}
  .scrollnav-btn svg{width:19px;height:19px}
}

/* ---- 表示アニメーション（JS有効時のみ） ---- */
html.js .rv{opacity:0;transform:translateY(24px);transition:opacity .6s ease, transform .6s ease}
html.js .rv.in{opacity:1;transform:none}
html.js .rv.instant{transition:none}
@media(prefers-reduced-motion:reduce){html.js .rv{opacity:1;transform:none;transition:none}}