@charset "utf-8";
/* にんたまちゃんの妊活ノート — ブランドカラーは表紙に準拠（ピンク／ミント／オレンジ） */
:root{
  --pink:#E87C8A; --pink-d:#D96476; --pink-l:#FBE4E8; --pink-p:#F6BFCA; --pink-x:#FDF2F4;
  --mint:#6FB7AE; --mint-l:#E4F2F0; --orange:#F5A93A; --orange-l:#FFF1DC;
  --cream:#FFF8F4; --ink:#2E2E33; --gray:#5F5F66; --gray2:#77777F; --line:#EFE2DE;
  --green:#06C755; --white:#fff;
  --r-s:14px; --r-m:22px; --r-l:34px; --r-xl:48px;
  --sh-s:0 4px 14px rgba(198,110,126,.10);
  --sh-m:0 14px 34px rgba(198,110,126,.14);
  --sh-l:0 26px 60px rgba(198,110,126,.20);
  --wrap:1240px;
  --hd:68px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth; -webkit-text-size-adjust:100%}
body{
  margin:0; overflow-x:hidden; background:var(--white); color:var(--ink);
  font-family:'Zen Maru Gothic','Hiragino Maru Gothic ProN','Hiragino Sans','Noto Sans JP',sans-serif;
  font-size:16px; line-height:1.95; letter-spacing:.025em; font-weight:500;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
img{max-width:100%; height:auto; display:block}
a{color:var(--pink-d); text-decoration:none; transition:color .2s}
a:hover{color:var(--pink)}
h1,h2,h3{line-height:1.4; letter-spacing:.01em; font-weight:900}
p{margin:0 0 1em}
.wrap{width:100%; max-width:var(--wrap); margin-inline:auto; padding-inline:24px}
.narrow{max-width:800px}
.skip{position:absolute; left:-9999px}
.skip:focus{left:12px; top:12px; background:#fff; padding:10px 18px; z-index:200; border-radius:10px; box-shadow:var(--sh-m)}
:focus-visible{outline:3px solid var(--mint); outline-offset:3px; border-radius:6px}
.sp-br{display:none}

/* ============ reveal ============ */
.reveal{opacity:0; transform:translateY(22px); transition:opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.shown{opacity:1; transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1; transform:none; transition:none}}

/* ============ header ============ */
.site-header{position:sticky; top:0; z-index:80; background:rgba(255,255,255,.86);
  backdrop-filter:saturate(1.4) blur(14px); border-bottom:1px solid transparent; transition:.3s}
.site-header.scrolled{border-bottom-color:var(--pink-l); box-shadow:0 6px 24px rgba(198,110,126,.08)}
.header-inner{display:flex; align-items:center; gap:18px; min-height:var(--hd)}
.brand{display:flex; align-items:center; gap:13px; color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{position:relative; display:grid; place-items:center; width:50px; height:50px; flex:0 0 50px;
  border-radius:50%; background:linear-gradient(155deg,#fff 0%,var(--pink-x) 45%,var(--pink-l) 100%);
  box-shadow:0 6px 16px rgba(216,120,138,.22), inset 0 0 0 2px rgba(255,255,255,.9)}
.brand-mark::before{content:''; position:absolute; inset:-4px; border-radius:50%;
  border:1.5px dashed var(--pink-p); opacity:.75; transition:transform .8s cubic-bezier(.2,.7,.3,1)}
.brand-mark::after{content:'✦'; position:absolute; right:-7px; top:-8px; font-size:13px; line-height:1;
  color:var(--orange); transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.brand:hover .brand-mark::after{transform:scale(1.25) rotate(20deg)}
.brand:hover .brand-mark::before{transform:rotate(160deg)}
.brand-mark img{width:40px; height:40px; background:none; padding:0}
.brand-mark-lg{width:60px; height:60px; flex-basis:60px}
.brand-mark-lg img{width:48px; height:48px}
.brand-text{display:block}
.brand-name{display:flex; align-items:baseline; gap:7px; font-size:19.5px; font-weight:900; line-height:1.2; letter-spacing:.05em}
.brand-name small{font-size:12px; font-weight:700; color:var(--gray2); letter-spacing:.08em}
.brand-en{display:block; font-size:9px; font-weight:900; letter-spacing:.3em; color:#C79BA6; margin-top:5px; padding-left:1px}
.gnav{margin-left:auto}
.gnav ul{display:flex; align-items:center; gap:26px; list-style:none; margin:0; padding:0}
.gnav a{color:var(--ink); font-size:14.5px; font-weight:700; position:relative; padding:6px 0}
.gnav a::after{content:''; position:absolute; left:0; right:100%; bottom:0; height:2px; background:var(--pink); border-radius:2px; transition:right .3s}
.gnav a:hover::after{right:0}
.gnav .nav-cta a{color:#fff; padding:11px 22px}
.gnav .nav-cta a::after{display:none}
.navbtn{display:none}

/* ============ buttons ============ */
.btn{display:inline-flex; align-items:center; justify-content:center; gap:9px;
  padding:14px 28px; border-radius:999px; font-weight:900; font-size:15.5px; letter-spacing:.03em;
  border:2px solid transparent; transition:transform .22s cubic-bezier(.2,.7,.3,1), box-shadow .22s, background .22s;
  text-align:center; line-height:1.4; font-family:inherit; cursor:pointer}
.btn:hover{transform:translateY(-3px)}
.btn-primary{background:linear-gradient(135deg,var(--pink) 0%,var(--pink-d) 100%); color:#fff; box-shadow:0 10px 24px rgba(232,124,138,.34)}
.btn-primary:hover{color:#fff; box-shadow:0 16px 32px rgba(232,124,138,.42)}
.btn-line{background:var(--green); color:#fff; box-shadow:0 10px 24px rgba(6,199,85,.3)}
.btn-line:hover{background:#05b34c; color:#fff; box-shadow:0 16px 32px rgba(6,199,85,.36)}
.btn-line::before{content:''; width:19px; height:19px; flex:0 0 19px; background:#fff; border-radius:5px;
  -webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M12 3C6.9 3 2.8 6.3 2.8 10.4c0 3.7 3.2 6.8 7.6 7.4.3.1.7.2.8.5.1.3.1.7 0 1l-.1.8c0 .2-.2.9.8.5s5.4-3.2 7.3-5.5c1.3-1.4 2-2.9 2-4.7C21.2 6.3 17.1 3 12 3z'/></svg>") center/contain no-repeat;
          mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M12 3C6.9 3 2.8 6.3 2.8 10.4c0 3.7 3.2 6.8 7.6 7.4.3.1.7.2.8.5.1.3.1.7 0 1l-.1.8c0 .2-.2.9.8.5s5.4-3.2 7.3-5.5c1.3-1.4 2-2.9 2-4.7C21.2 6.3 17.1 3 12 3z'/></svg>") center/contain no-repeat}
.btn-ghost{background:#fff; color:var(--pink-d); border-color:var(--pink-p); box-shadow:var(--sh-s)}
.btn-ghost:hover{background:var(--pink-x); color:var(--pink-d); box-shadow:var(--sh-m)}
.btn-lg{padding:17px 36px; font-size:16.5px}

/* ============ hero ============ */
.hero{position:relative; overflow:hidden; display:flex; align-items:center;
  min-height:min(820px, calc(100svh - var(--hd))); padding:clamp(40px,6vw,86px) 0 clamp(72px,9vw,124px);
  background:radial-gradient(120% 90% at 82% 8%, #FFF3E4 0%, rgba(255,243,228,0) 55%), linear-gradient(178deg,var(--pink-l) 0%,#FFF6F3 62%,#fff 100%)}
.hero::before,.hero::after{content:''; position:absolute; border-radius:50%; pointer-events:none}
.hero::before{width:520px; height:520px; right:-140px; top:-190px; background:radial-gradient(circle at 30% 30%,rgba(246,191,202,.55),rgba(246,191,202,0) 70%)}
.hero::after{width:420px; height:420px; left:-160px; bottom:-160px; background:radial-gradient(circle at 60% 40%,rgba(111,183,174,.28),rgba(111,183,174,0) 70%)}
.hero-inner{position:relative; z-index:1; width:100%; display:grid; gap:6px 40px;
  grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  grid-template-areas:'head art' 'body art'; align-items:center}
.hero-head{grid-area:head; align-self:end}
.hero-body{grid-area:body; align-self:start}
.hero-art{grid-area:art; position:relative; justify-self:center}
.hero-kicker{display:inline-flex; align-items:center; gap:8px; background:#fff; color:var(--pink-d);
  font-weight:900; font-size:13px; letter-spacing:.06em; padding:9px 20px; border-radius:999px;
  margin:0 0 20px; box-shadow:var(--sh-s)}
.hero-kicker::before{content:''; width:7px; height:7px; border-radius:50%; background:var(--mint)}
.hero h1{font-size:clamp(32px,5.4vw,64px); margin:0 0 22px; letter-spacing:.005em; line-height:1.32}
.hero h1 em{font-style:normal; position:relative; display:inline-block; z-index:0; color:var(--pink-d)}
.hero h1 em::after{content:''; position:absolute; left:-2px; right:-2px; bottom:.08em; height:.34em;
  background:linear-gradient(90deg,var(--orange),#FFD08A); border-radius:999px; z-index:-1; opacity:.85}
.hero-lead{font-size:clamp(15.5px,1.35vw,17.5px); color:#4C4C55; margin:0 0 28px; max-width:min(34em,100%)}
.hero-btns{display:flex; flex-wrap:wrap; gap:14px; margin:0 0 16px}
.hero-note{font-size:12px; color:var(--gray2); margin:0; line-height:1.7}
.hero-art img{width:min(100%,430px); margin-inline:auto;
  filter:drop-shadow(0 26px 44px rgba(216,120,138,.26)); animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@media(prefers-reduced-motion:reduce){.hero-art img{animation:none}}
.hero-badge{position:absolute; right:2%; bottom:6%; background:#fff; border-radius:999px; padding:12px 22px;
  box-shadow:var(--sh-m); font-size:12.5px; font-weight:900; color:var(--gray); text-align:center; line-height:1.35}
.hero-badge b{display:block; font-size:20px; color:var(--pink-d); letter-spacing:.02em}

/* ============ sections ============ */
.section{padding:clamp(56px,7vw,100px) 0; position:relative}
.sec-title{text-align:center; margin:0 0 10px; font-size:clamp(22px,3.4vw,36px)}
.sec-title .en{display:block; font-family:'Zen Maru Gothic',sans-serif; font-size:12px; letter-spacing:.28em;
  color:var(--pink-p); font-weight:900; margin-bottom:10px}
.sec-title .ja{display:block}
.sec-title::after{content:''; display:block; width:56px; height:5px; border-radius:99px;
  background:linear-gradient(90deg,var(--pink-p),var(--orange)); margin:16px auto 0}
.sec-lead{text-align:center; color:var(--gray); font-size:15px; margin:0 auto 36px; max-width:38em}
.more{text-align:center; margin-top:34px; font-weight:900}
.more a{display:inline-flex; align-items:center; gap:8px}

/* promise */
.promise{background:var(--cream); padding:0 0 clamp(44px,5vw,64px); position:relative; z-index:2;
  border-radius:var(--r-xl) var(--r-xl) 0 0; margin-top:calc(-1 * clamp(40px,5vw,64px))}
.promise-list{display:grid; grid-template-columns:repeat(3,1fr); gap:22px; list-style:none; margin:0; padding:clamp(36px,4vw,52px) 0 0}
.promise-list li{background:#fff; border-radius:var(--r-m); padding:26px 26px 28px; box-shadow:var(--sh-s); position:relative}
.pm-icon{position:absolute; right:20px; top:16px; font-size:30px; font-weight:900; color:var(--pink-l); letter-spacing:0}
.promise-list b{display:block; color:var(--pink-d); font-size:18px; margin-bottom:6px}
.pm-text{font-size:14.5px; color:#55555D; line-height:1.85; display:block}

/* worries */
.worries{background:var(--cream)}
.worry-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px; list-style:none; padding:0; margin:34px 0 0}
.worry-grid a{display:flex; flex-direction:column; height:100%; background:#fff; border-radius:var(--r-m); padding:26px 26px 22px;
  border:2px solid transparent; box-shadow:var(--sh-s); color:var(--ink); transition:.25s cubic-bezier(.2,.7,.3,1)}
.worry-grid a:hover{border-color:var(--pink-p); box-shadow:var(--sh-m); transform:translateY(-5px); color:var(--ink)}
.w-q{display:block; font-weight:900; font-size:19px; color:var(--pink-d); margin-bottom:8px; line-height:1.5}
.w-q::before{content:'「'} .w-q::after{content:'」'}
.w-a{display:block; font-size:14.5px; color:#55555D; line-height:1.8; flex:1}
.w-go{display:inline-flex; align-items:center; gap:6px; margin-top:14px; font-size:13px; font-weight:900; color:var(--mint)}
.w-go::after{content:'→'; transition:transform .25s}
.worry-grid a:hover .w-go::after{transform:translateX(5px)}

/* ============ books ============ */
.books-sec{background:#fff}
.book-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:32px; margin-top:36px}
.book-card{background:#fff; border-radius:var(--r-l); overflow:hidden; box-shadow:var(--sh-m);
  display:flex; flex-direction:column; transition:transform .3s cubic-bezier(.2,.7,.3,1), box-shadow .3s}
.book-card:hover{transform:translateY(-8px); box-shadow:var(--sh-l)}
.book-cover{display:block; position:relative; background:linear-gradient(160deg,var(--pink-x),var(--pink-l)); overflow:hidden}
.book-cover img{width:100%; transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.book-card:hover .book-cover img{transform:scale(1.04)}
.book-meta{position:relative}
.book-no{position:absolute; right:18px; top:12px; font-size:34px; font-weight:900; color:var(--pink-l); letter-spacing:0; line-height:1; pointer-events:none}
.book-meta{padding:22px 24px 26px; display:flex; flex-direction:column; gap:9px; flex:1}
.book-num{font-size:11px; font-weight:900; color:var(--mint); margin:0; letter-spacing:.2em}
.book-card h3{font-size:21px; margin:0}
.book-card h3 a{color:var(--ink)}
.book-card h3 a:hover{color:var(--pink-d)}
.book-sub{font-size:13px; color:var(--gray2); margin:0; line-height:1.7}
.book-lead{font-size:14.5px; margin:0; color:#4C4C55; line-height:1.85}
.book-more{margin:auto 0 0; padding-top:8px}
.book-more .btn{width:100%}
.tags{display:flex; flex-wrap:wrap; gap:7px; list-style:none; padding:0; margin:2px 0}
.tags li{background:#fff; border:1.5px solid var(--pink-l); color:var(--pink-d); font-size:11.5px; font-weight:900; padding:5px 13px; border-radius:999px; letter-spacing:.02em}

/* ============ page head / book detail ============ */
.pagehead{position:relative; overflow:hidden; padding:clamp(26px,3vw,42px) 0 clamp(34px,4vw,50px);
  background:linear-gradient(175deg,var(--pink-l) 0%,#FFF7F4 70%,#fff 100%)}
.pagehead::before{content:''; position:absolute; width:380px; height:380px; right:-120px; top:-160px; border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(255,209,150,.4),rgba(255,209,150,0) 70%)}
.pagehead>.wrap{position:relative; z-index:1}
.pagehead h1{font-size:clamp(26px,4.6vw,44px); margin:10px 0 14px}
.pagehead-lead{color:#4C4C55; font-size:15.5px; margin:0; max-width:min(44em,100%)}
.crumbs{font-size:12.5px; color:var(--gray2); margin:0; letter-spacing:.04em}
.crumbs a{color:var(--gray2)}
.crumbs a:hover{color:var(--pink-d)}
.book-head{padding-bottom:clamp(40px,5vw,64px)}
.book-hero{display:grid; grid-template-columns:minmax(0,360px) minmax(0,1fr); gap:clamp(28px,4vw,56px); align-items:start; margin-top:22px}
.book-hero-cover{width:100%; border-radius:var(--r-s); box-shadow:0 26px 56px rgba(0,0,0,.22); transform:rotate(-1.2deg)}
.book-hero-body h1{margin:8px 0 10px; font-size:clamp(25px,3.6vw,42px)}
.book-hero-body .book-num{letter-spacing:.18em}
.book-hero-body .book-sub{font-size:15px; color:var(--gray)}
.book-hero-body .book-lead{font-size:16px; margin:12px 0 16px; color:#4C4C55}
.book-btns{display:flex; flex-wrap:wrap; gap:14px; margin:24px 0 12px}
.book-format{font-size:12.5px; color:var(--gray2); margin:0}
.book-highlight{background:#fff; border:2px dashed var(--pink-p); border-radius:var(--r-m); padding:20px 24px; margin-top:24px; text-align:left; box-shadow:var(--sh-s)}
.bh-title{font-size:12px; font-weight:900; color:var(--pink-d); margin:0 0 10px; letter-spacing:.16em}
.book-highlight ul{list-style:none; padding:0; margin:0; display:grid; gap:10px}
.book-highlight li{position:relative; padding-left:26px; font-size:14.5px; line-height:1.8}
.book-highlight li::before{content:''; position:absolute; left:4px; top:.7em; width:8px; height:8px; border-radius:50%; background:var(--pink-p)}
.lead-text{font-size:16.5px; line-height:2.1; margin-bottom:8px}
.check-list{list-style:none; padding:0; margin:18px 0 34px; display:grid; gap:12px}
.check-list li{position:relative; padding:2px 0 2px 36px; line-height:1.85}
.check-list li::before{content:'✓'; position:absolute; left:0; top:5px; width:24px; height:24px; border-radius:50%;
  background:var(--mint); color:#fff; font-size:13px; font-weight:900; display:flex; align-items:center; justify-content:center}
.point-list{list-style:none; padding:0; margin:18px 0 34px; display:grid; gap:14px}
.point-list li{background:linear-gradient(100deg,var(--cream),#fff); border-left:6px solid var(--pink-p);
  border-radius:0 var(--r-s) var(--r-s) 0; padding:18px 22px; line-height:1.85; box-shadow:var(--sh-s)}
.point-list b{color:var(--pink-d)}
.toc{list-style:none; padding:0; margin:18px 0 34px; border-top:2px solid var(--pink-l)}
.toc li{display:grid; grid-template-columns:126px minmax(0,1fr); gap:16px; padding:18px 6px;
  border-bottom:1px solid var(--line); align-items:baseline}
.toc b{color:var(--pink-d); font-size:14px; letter-spacing:.06em}
.toc span{font-size:15.5px; line-height:1.8}
.notice{background:var(--orange-l); border:none; border-radius:var(--r-m); padding:20px 24px; font-size:13.5px;
  color:#7A6647; line-height:1.9; position:relative}

/* ============ cta ============ */
.cta{padding:clamp(48px,6vw,84px) 0; background:var(--cream)}
.cta-card{position:relative; overflow:hidden; border-radius:var(--r-xl); padding:clamp(30px,4vw,52px) clamp(26px,4vw,56px);
  background:linear-gradient(125deg,#FFF0F3 0%,#FFF7EC 58%,#F0F8F6 100%); box-shadow:var(--sh-m);
  display:grid; grid-template-columns:190px minmax(0,1fr) 170px; gap:clamp(20px,3vw,40px); align-items:center}
.cta-card::before{content:''; position:absolute; width:300px; height:300px; right:-90px; top:-120px; border-radius:50%;
  background:radial-gradient(circle,rgba(246,191,202,.5),rgba(246,191,202,0) 70%)}
.cta-card>*{position:relative; z-index:1}
.cta-en{font-size:11.5px; letter-spacing:.28em; color:var(--mint); font-weight:900; margin:0 0 8px}
.cta h2{font-size:clamp(20px,2.8vw,30px); margin:0 0 12px; line-height:1.5}
.cta p{margin:0 0 8px; font-size:15px; color:#4C4C55}
.cta-btns{display:flex; gap:14px; flex-wrap:wrap; margin:20px 0 10px !important}
.cta-small{font-size:12px !important; color:var(--gray2) !important; line-height:1.75}
.cta-bunny{width:100%; max-width:190px; margin-inline:auto; filter:drop-shadow(0 16px 28px rgba(216,120,138,.24))}
.cta-qr-box{text-align:center; background:#fff; border-radius:var(--r-m); padding:14px 14px 10px; box-shadow:var(--sh-s)}
.cta-qr{width:100%; max-width:150px; margin-inline:auto}
.cta-qr-box span{display:block; font-size:11px; color:var(--gray2); margin-top:6px; font-weight:700}

/* ============ columns ============ */
.columns-sec{background:#fff}
.column-list{list-style:none; padding:0; margin:34px 0 0; display:grid; gap:20px}
.column-list a{display:block; background:#fff; border-radius:var(--r-m); padding:26px 30px; box-shadow:var(--sh-s);
  color:var(--ink); border:2px solid var(--pink-l); transition:.25s cubic-bezier(.2,.7,.3,1)}
.column-list a:hover{border-color:var(--pink-p); box-shadow:var(--sh-m); transform:translateY(-4px); color:var(--ink)}
.c-tag{display:inline-block; background:var(--mint); color:#fff; font-size:11.5px; font-weight:900; padding:5px 14px; border-radius:999px; margin-bottom:10px; letter-spacing:.04em}
.c-title{display:block; font-size:21px; font-weight:900; margin-bottom:6px; line-height:1.5}
.c-desc{display:block; font-size:14.5px; color:#55555D; line-height:1.8}
.c-go{display:inline-flex; align-items:center; gap:6px; margin-top:12px; font-size:13px; font-weight:900; color:var(--pink-d)}
.c-go::after{content:'→'; transition:transform .25s}
.column-list a:hover .c-go::after{transform:translateX(5px)}

/* article */
.article h1{font-size:clamp(25px,4vw,40px); margin:12px 0 8px; line-height:1.45}
.article .byline{font-size:13px; color:var(--gray2); margin:0 0 32px; padding-bottom:20px; border-bottom:2px solid var(--pink-l)}
.article h2{font-size:clamp(19px,2.4vw,25px); margin:48px 0 16px; padding:2px 0 2px 18px; border-left:7px solid var(--pink-p); line-height:1.55}
.article p{margin:0 0 22px; line-height:2.15; font-size:16px}
.article .check-list{background:var(--cream); border-radius:var(--r-m); padding:24px 26px}
.related-book{display:flex; gap:24px; align-items:center; background:linear-gradient(120deg,var(--cream),#fff);
  border-radius:var(--r-l); padding:26px; margin-top:44px; box-shadow:var(--sh-s)}
.related-book img{width:130px; border-radius:8px; box-shadow:0 12px 26px rgba(0,0,0,.18)}
.rb-kicker{font-size:11.5px; color:var(--mint); font-weight:900; margin:0; letter-spacing:.16em}
.related-book h3{margin:4px 0 8px; font-size:20px}
.related-book p{margin:0; font-size:14.5px; color:#55555D}

/* ============ faq ============ */
.faq-sec{background:var(--cream)}
details{background:#fff; border-radius:var(--r-m); margin-bottom:14px; box-shadow:var(--sh-s); overflow:hidden;
  border:2px solid transparent; transition:.25s}
details:hover{border-color:var(--pink-l)}
details[open]{box-shadow:var(--sh-m)}
summary{cursor:pointer; padding:20px 58px 20px 24px; font-weight:900; position:relative; list-style:none; line-height:1.7; font-size:16px}
summary::-webkit-details-marker{display:none}
summary::before{content:'Q'; color:#fff; background:var(--pink); width:26px; height:26px; border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center; font-size:13px; margin-right:12px; vertical-align:-5px}
summary::after{content:''; position:absolute; right:24px; top:50%; width:13px; height:13px; margin-top:-7px;
  border-right:3px solid var(--pink-p); border-bottom:3px solid var(--pink-p); transform:rotate(45deg); transition:transform .3s}
details[open] summary::after{transform:rotate(-135deg)}
details p{margin:0; padding:0 24px 24px 24px; color:#4C4C55; font-size:15.5px; line-height:2.05}
.faq-list details p::before{content:'A'; color:#fff; background:var(--mint); width:26px; height:26px; border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center; font-size:13px; font-weight:900; margin-right:12px; vertical-align:-5px}

/* ============ about ============ */
.about-sec{background:#fff}
.about-inner{display:grid; grid-template-columns:260px minmax(0,1fr); gap:44px; align-items:center}
.about-inner img{filter:drop-shadow(0 18px 30px rgba(216,120,138,.2))}
.about-inner .sec-title{text-align:left}
.about-inner .sec-title::after{margin-left:0}
.about-hero{display:grid; grid-template-columns:260px minmax(0,1fr); gap:40px; align-items:center; margin-bottom:44px}
.about-hero img{filter:drop-shadow(0 18px 30px rgba(216,120,138,.2))}
.about-hero h2{margin:0 0 12px; font-size:clamp(20px,2.6vw,26px)}
.mascot-gallery{list-style:none; display:flex; flex-wrap:wrap; gap:16px; padding:0; margin:22px 0 0; justify-content:center}
.mascot-gallery li{background:linear-gradient(160deg,var(--pink-x),var(--pink-l)); border-radius:50%; padding:12px; box-shadow:var(--sh-s)}
.mascot-gallery img{width:110px; height:auto}

/* legal */
.legal h2{font-size:20px; margin:38px 0 12px; color:var(--pink-d)}
.legal p{font-size:15px; line-height:2.05; margin:0 0 16px}

/* ============ footer ============ */
.site-footer{background:linear-gradient(180deg,var(--pink-l),#FBD9E0); padding:clamp(40px,5vw,64px) 0 34px; margin-top:0}
.foot-grid{display:grid; grid-template-columns:1.2fr 1fr; gap:32px}
.foot-brand{display:flex; align-items:center; gap:14px; margin:0 0 12px; font-size:17.5px; font-weight:900; letter-spacing:.03em}
.foot-brand .brand-mark{background:linear-gradient(155deg,#fff,var(--pink-x))}
.foot-brand .brand-en{color:#C89BA6; margin-top:6px}
.foot-note{font-size:13.5px; color:#63555B; margin:0; line-height:1.85}
.foot-links{list-style:none; display:grid; grid-template-columns:repeat(2,1fr); gap:12px 20px; padding:0; margin:0}
.foot-links a{font-size:14px; color:#5D5259; font-weight:700}
.foot-links a:hover{color:var(--pink-d)}
.disclaimer{font-size:12px; color:#7B6D72; line-height:1.9; margin:32px 0 12px; padding-top:22px; border-top:1px solid rgba(0,0,0,.09)}
.copyright{font-size:12px; color:#7B6D72; margin:0; text-align:center; letter-spacing:.06em}

/* ============ mobile sticky cta ============ */
.mobile-cta{display:none}

/* ============ responsive ============ */
@media(max-width:1024px){
  .hero-inner{gap:4px 26px}
  .promise-list,.worry-grid{grid-template-columns:repeat(2,1fr)}
  .book-grid{grid-template-columns:repeat(2,1fr); gap:26px}
  .cta-card{grid-template-columns:150px minmax(0,1fr); }
  .cta-qr-box{display:none}
  .about-inner,.about-hero{grid-template-columns:200px minmax(0,1fr); gap:30px}
}
@media(max-width:860px){
  .gnav ul{gap:18px}
  .gnav a{font-size:13.5px}
  .book-hero{grid-template-columns:minmax(0,280px) minmax(0,1fr); gap:30px}
}
@media(max-width:760px){
  :root{--hd:60px}
  body{font-size:16.5px; line-height:1.95; padding-bottom:92px}
  .wrap{padding-inline:18px}
  .sp-br{display:inline}

  /* header */
  .brand{gap:10px}
  .brand-mark{width:42px; height:42px; flex-basis:42px}
  .brand-mark img{width:34px; height:34px}
  .brand-mark::after{font-size:11px; right:-5px; top:-6px}
  .brand-name{font-size:17px; gap:5px}
  .brand-name small{font-size:10.5px}
  .brand-en{font-size:8px; letter-spacing:.24em; margin-top:3px}
  .navbtn{display:flex; flex-direction:column; justify-content:center; gap:5px; margin-left:auto;
    width:46px; height:46px; padding:0 12px; background:var(--pink-x); border:none; border-radius:14px; cursor:pointer;
    font-size:0; color:transparent}
  .navbtn::before,.navbtn::after{content:''; display:block; height:2.5px; background:var(--pink-d); border-radius:2px; transition:.3s}
  .navbtn::before{width:22px} .navbtn::after{width:15px}
  .navbtn.is-open::before{transform:translateY(4px) rotate(45deg)}
  .navbtn.is-open::after{width:22px; transform:translateY(-4px) rotate(-45deg)}
  .gnav{position:fixed; top:var(--hd); left:0; right:0; background:#fff; display:none;
    box-shadow:0 18px 40px rgba(0,0,0,.12); border-radius:0 0 var(--r-l) var(--r-l); max-height:calc(100dvh - var(--hd)); overflow:auto}
  .gnav.open{display:block; animation:navIn .28s cubic-bezier(.2,.7,.3,1)}
  @keyframes navIn{from{opacity:0; transform:translateY(-10px)}to{opacity:1; transform:none}}
  .gnav ul{flex-direction:column; align-items:stretch; gap:0; padding:10px 22px 24px}
  .gnav li{border-bottom:1px solid var(--line)}
  .gnav a{display:block; padding:17px 4px; font-size:16px}
  .gnav a::after{display:none}
  .gnav .nav-cta{border:none; padding-top:16px}
  .gnav .nav-cta a{text-align:center; padding:16px}

  /* hero：見出し → うさぎ → 説明の順で、最初の画面に言いたいことを収める */
  .hero{padding:22px 0 60px; min-height:0; display:block}
  .hero-inner{grid-template-columns:1fr; grid-template-areas:'head' 'art' 'body'; text-align:center; gap:0}
  .hero-kicker{margin-bottom:16px; font-size:12px; padding:8px 16px}
  .hero h1{font-size:clamp(29px,8.4vw,40px); line-height:1.42; margin-bottom:18px}
  .hero-art{margin:2px auto 14px}
  .hero-art img{width:min(62vw,250px)}
  .hero-badge{right:-4px; bottom:2%; padding:9px 16px; font-size:11px}
  .hero-badge b{font-size:17px}
  .hero-lead{font-size:15.5px; margin:0 auto 22px; text-align:left; line-height:2}
  .hero-btns{flex-direction:column; gap:12px; margin-bottom:14px}
  .hero-btns .btn{width:100%}
  .hero-note{font-size:11.5px; text-align:left}

  /* sections */
  .section{padding:52px 0}
  .sec-title{font-size:clamp(21px,6vw,28px)}
  .sec-title .en{font-size:11px; letter-spacing:.22em}
  .sec-lead{font-size:14.5px; margin-bottom:26px; text-align:left}
  .promise{border-radius:32px 32px 0 0; margin-top:-32px}
  .promise-list{grid-template-columns:1fr; gap:14px; padding-top:34px}
  .promise-list li{padding:20px 22px}
  .promise-list b{font-size:17px}
  .pm-icon{font-size:26px; top:12px; right:16px}
  .pm-text{font-size:14.5px}

  .worry-grid{grid-template-columns:1fr; gap:12px; margin-top:26px}
  .worry-grid a{padding:20px 22px}
  .w-q{font-size:17.5px}
  .w-a{font-size:14.5px}

  /* 書籍カードは横並びにして、1画面に多く見せる */
  .book-grid{grid-template-columns:1fr; gap:16px; margin-top:26px}
  .book-card{flex-direction:row; border-radius:var(--r-m)}
  .book-card:hover{transform:none}
  .book-cover{flex:0 0 40%; max-width:40%; display:flex; align-items:center}
  .book-no{font-size:26px; right:14px; top:10px}
  .book-meta{padding:16px 16px 18px; gap:7px}
  .book-num{font-size:10px; letter-spacing:.14em}
  .book-card h3{font-size:17px; line-height:1.5}
  .book-card .book-sub{display:none}
  .book-lead{font-size:13.5px; line-height:1.8; display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden}
  .book-card .tags li{font-size:10.5px; padding:4px 10px}
  .book-card .tags li:nth-child(n+4){display:none}
  .book-hero-body .tags{gap:6px}
  .book-more{padding-top:4px}
  .book-more .btn{padding:11px 18px; font-size:14px}

  /* 書籍詳細 */
  .pagehead{padding:20px 0 30px}
  .book-hero{grid-template-columns:1fr; justify-items:center; text-align:center; gap:22px; margin-top:16px}
  .book-hero-cover{max-width:210px; transform:none}
  .book-hero-body .tags,.book-btns{justify-content:center}
  .book-btns{flex-direction:column; width:100%; gap:12px}
  .book-btns .btn{width:100%}
  .book-highlight{text-align:left; padding:18px 20px}
  .lead-text{font-size:16px; line-height:2.05; text-align:left}
  .toc li{grid-template-columns:1fr; gap:3px; padding:15px 4px}
  .toc span{font-size:15px}
  .check-list li,.point-list li{font-size:15.5px}

  /* CTA */
  .cta{padding:48px 0}
  .cta-card{grid-template-columns:1fr; text-align:center; padding:30px 22px 34px; border-radius:var(--r-l)}
  .cta-bunny{max-width:130px}
  .cta h2{font-size:20px}
  .cta p{font-size:14.5px; text-align:left}
  .cta-en{text-align:center}
  .cta-btns{justify-content:center}
  .cta-btns .btn{width:100%}
  .cta-small{text-align:left}

  /* コラム */
  .column-list{gap:14px; margin-top:26px}
  .column-list a{padding:20px 22px}
  .c-title{font-size:18px}
  .c-desc{font-size:14px}
  .article h2{font-size:20px; margin:38px 0 14px}
  .article p{font-size:16px; line-height:2.1}
  .related-book{flex-direction:column; text-align:center; padding:24px 20px; gap:16px}

  /* FAQ */
  summary{font-size:15.5px; padding:18px 48px 18px 18px}
  details p{font-size:15px; padding:0 18px 20px}

  /* about */
  .about-inner,.about-hero{grid-template-columns:1fr; text-align:center; justify-items:center; gap:22px}
  .about-inner img,.about-hero img{width:170px}
  .about-inner .sec-title{text-align:center}
  .about-inner .sec-title::after{margin-inline:auto}
  .mascot-gallery{gap:12px}
  .mascot-gallery img{width:84px}

  /* footer */
  .foot-grid{grid-template-columns:1fr; gap:24px}
  .foot-links{gap:10px 14px}
  .disclaimer{font-size:11.5px}

  /* 追従CTA */
  .mobile-cta{display:block; position:fixed; left:0; right:0; bottom:0; z-index:70;
    background:rgba(255,255,255,.95); backdrop-filter:blur(10px); padding:9px 16px calc(9px + env(safe-area-inset-bottom));
    border-top:1px solid var(--pink-l); box-shadow:0 -8px 24px rgba(198,110,126,.12)}
  .mobile-cta-note{margin:0 0 6px; font-size:11.5px; font-weight:900; color:var(--pink-d); text-align:center; letter-spacing:.02em}
  .mobile-cta .btn{width:100%; padding:14px; font-size:16px}
}
@media(max-width:380px){
  .book-cover{flex-basis:44%; max-width:44%}
  .book-card h3{font-size:16px}
  .book-lead{-webkit-line-clamp:2}
}

/* Amazon 購入導線 */
.btn-buy{background:linear-gradient(135deg,#FFB648 0%,#F5901E 100%); color:#3A2A10;
  box-shadow:0 10px 24px rgba(245,169,58,.36)}
.btn-buy:hover{color:#3A2A10; box-shadow:0 16px 32px rgba(245,169,58,.44)}
.book-buy{margin:8px 0 0 !important; text-align:center}
.book-buy a{display:inline-flex; align-items:center; gap:5px; font-size:13px; font-weight:900; color:#C77A16;
  border-bottom:2px solid rgba(245,169,58,.4); padding-bottom:1px}
.book-buy a:hover{color:#A6620D; border-bottom-color:var(--orange); text-decoration:none}
.book-sublink{margin:2px 0 0; font-size:13.5px; font-weight:700}
.book-sublink a{color:var(--gray2)}
.book-sublink a:hover{color:var(--pink-d)}

/* アフィリエイト表記 */
.pr-note{margin:10px 0 0; font-size:11.5px; color:var(--gray2); line-height:1.7; max-width:32em}
.affiliate-note{font-size:11.5px; color:#7B6D72; margin:28px 0 0; padding-top:20px; border-top:1px solid rgba(0,0,0,.09); line-height:1.8}
.affiliate-note + .disclaimer{margin-top:10px; padding-top:0; border-top:none}

/* 記事内FAQ・関連コラム */
.article-faq{margin:16px 0 30px}
.article-faq details{border:2px solid var(--pink-l); box-shadow:none}
.article-faq summary{font-size:15.5px; padding:16px 46px 16px 18px}
.article-faq details p{font-size:15px; padding:0 18px 18px}
.related-columns{background:var(--cream); border-radius:var(--r-m); padding:22px 26px; margin:34px 0 0}
.rc-title{font-size:12px; font-weight:900; letter-spacing:.18em; color:var(--mint); margin:0 0 12px}
.related-columns ul{list-style:none; padding:0; margin:0; display:grid; gap:12px}
.related-columns a{display:flex; align-items:baseline; gap:10px; font-weight:700; font-size:15px; color:var(--ink); line-height:1.7}
.related-columns a:hover{color:var(--pink-d)}
.rc-tag{flex:0 0 auto; background:#fff; border:1.5px solid var(--pink-l); color:var(--pink-d);
  font-size:10.5px; font-weight:900; padding:3px 10px; border-radius:999px}
@media(max-width:760px){
  .related-columns{padding:18px 18px}
  .related-columns a{flex-direction:column; gap:5px; font-size:14.5px}
}