/* theme: everysta-letter（「便箋と光」案。エメラルドグリーンのインク × アイボリーの紙）
   content.json の "theme":"letter" で既定。装飾素材は url("everysta-letter/xxx.webp")（= assets/themes/everysta-letter/）。
   文字は content.json のHTMLのまま。このCSSでは色・書体・紙の質感・線画の装飾だけを足す。 */
:root{
  --c-bg:#dfe8e2;--c-surface:#fbf8f1;--c-surface-2:#f4efe3;--c-ink:#1f3b35;--c-mute:#5d6e68;
  --c-accent:#0f6e5c;--c-accent-ink:#fbf8f1;--c-invert:#0e5a4b;--c-invert-ink:#fbf8f1;--c-line:rgba(15,110,92,.22);
  --c-emerald-deep:#0b4a3e;--c-sand:#c9b48a;
  --f-body:"Noto Sans JP",sans-serif;--f-head:"Noto Serif JP",serif;--f-en:"Cormorant Garamond",serif;
  --radius:2px;--radius-btn:999px;--border:1px solid rgba(15,110,92,.55);--shadow:0 30px 70px rgba(20,60,50,.18),0 2px 6px rgba(20,60,50,.08);
  --fs-body:15px;--lh-body:2.05;--btn-h:58px;--fs-btn:15.5px;--sec-y:80px;--wrap-x:28px;
  --grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .3 0 0 0 0 .28 0 0 0 0 .2 0 0 0 .07 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  --linen:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Cfilter id='f'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.004 .25' numOctaves='2' seed='3'/%3E%3CfeColorMatrix values='0 0 0 0 .1 0 0 0 0 .3 0 0 0 0 .25 0 0 0 .06 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23f)'/%3E%3C/svg%3E");
}
body{background:var(--grain),var(--linen),linear-gradient(115deg,rgba(255,255,255,.55),transparent 38%,transparent 62%,rgba(255,255,255,.35)),var(--c-bg);color:var(--c-ink);letter-spacing:.03em}
.lp{background:var(--grain),var(--c-surface)}
@media (min-width:1024px){.lp{border-inline:0}}
.en{font-family:var(--f-en);letter-spacing:0}
.prose p,.lead,.close__p,.side__catch,.h2{word-break:auto-phrase}
/* サイド（PC） */
.side__logo{font-family:var(--f-en);font-weight:600;font-size:34px;letter-spacing:.14em;color:var(--c-emerald-deep)}
.side__catch{font-weight:500;font-size:20px;line-height:1.9;color:var(--c-ink)}
.side .btn{min-height:54px;font-size:15px}
.side--l::after{content:"";position:absolute;right:calc(var(--side-pad-x) + 20px);bottom:7vh;width:110px;height:108px;background:url("everysta-letter/sprig.webp") center/contain no-repeat;opacity:.8;transform:rotate(-12deg)}
.side--r::after{content:"";position:absolute;left:calc(var(--side-pad-x) + 120px);bottom:9vh;width:46px;height:44px;background:url("everysta-letter/star.webp") center/contain no-repeat;opacity:.7}
.side--l,.side--r{position:sticky}
.index__ttl{font-family:var(--f-en);font-weight:600;letter-spacing:.16em;font-size:24px;color:var(--c-emerald-deep)}
.index{min-width:190px}
.index a{border-bottom:1px solid var(--c-line);padding:9px 2px;font-weight:500;color:var(--c-ink)}
.index a::before{color:var(--c-accent)}
/* ボタン・リンク */
.btn{border:0;font-weight:700;letter-spacing:.06em;box-shadow:0 1px 0 rgba(0,0,0,.08),0 8px 18px rgba(15,110,92,.18)}
.btn--sub{background:transparent;color:var(--c-accent);border:1px solid var(--c-accent);box-shadow:none}
.card.link{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:22px 0;padding:16px 18px;border:1px solid var(--c-accent);border-radius:2px;background:rgba(255,255,255,.5);text-decoration:none;font-family:var(--f-head);font-weight:600;font-size:15px;color:var(--c-emerald-deep);transition:background .25s}
.card.link::after{content:"→";font-family:var(--f-en);font-size:20px;line-height:1;color:var(--c-accent);transition:transform .25s}
.card.link:hover{background:#fff}.card.link:hover::after{transform:translateX(4px)}
/* ヘッダー */
.hd{background:transparent;padding:0 var(--wrap-x)}
.hd__bar{background:transparent;color:var(--c-emerald-deep);border-radius:0;padding:18px 0 14px;border-bottom:1px solid var(--c-line)}
.hd__logo{font-family:var(--f-en);font-weight:600;font-size:23px;letter-spacing:.14em;display:flex;align-items:baseline;gap:10px}
.hd__logo small{font-family:var(--f-head);font-weight:600;font-size:12px;letter-spacing:.12em}
.hd__cta{background:transparent;color:var(--c-emerald-deep);border:1px solid var(--c-accent);font-weight:700;font-size:12px;padding:6px 14px}
.hd{position:relative}
/* FV */
.fv{padding:30px var(--wrap-x) 40px}
.fv__card{position:relative;background:none;border:0;border-radius:0;padding:0}
.fv__card::before{content:"";position:absolute;right:-6px;top:58px;width:96px;height:94px;background:url("everysta-letter/sprig.webp") center/contain no-repeat;opacity:.85;transform:rotate(8deg)}
.fv__h1{margin:22px 0 0;line-height:1.02;color:var(--c-emerald-deep)}
.fv__h1 .l1{font-style:italic;font-weight:500;font-size:44px}
.fv__h1 .l2{font-style:italic;font-weight:600;font-size:64px;line-height:1;color:var(--c-emerald-deep);max-width:5.6em}
.fv__lead{margin:22px 0 0;font-family:var(--f-head);font-weight:600;font-size:16px;line-height:1.9;color:var(--c-ink)}
.fv .lead{margin-top:26px;font-family:var(--f-head);font-weight:500;font-size:15px;line-height:2.1}
/* 写真・図 */
.fig{margin:26px 0 0}
.fig img{width:100%;height:auto;border-radius:2px}
.fig .cap{margin:6px 0 0;text-align:right;font-size:11px;color:var(--c-mute);letter-spacing:.05em}
.fig--hero img{aspect-ratio:4/4.6;object-fit:cover;object-position:50% 60%;box-shadow:0 1px 2px rgba(0,0,0,.06)}
.fig--line{margin:30px auto 0;width:86%}
.fig--line img{border-radius:0}
/* セクション */
.sec{position:relative}
.sec::before{content:"";display:block;width:200px;height:52px;margin:-40px auto 34px;background:url("everysta-letter/divider.webp") center/contain no-repeat;opacity:.9}
.sec--alt{background:linear-gradient(rgba(201,180,138,.1),rgba(201,180,138,.1))}
.eyebrow{display:flex;align-items:center;justify-content:center;gap:14px;font-family:var(--f-en);font-weight:600;font-size:15px;letter-spacing:.32em;color:var(--c-accent)}
.eyebrow::before,.eyebrow::after{content:"";width:28px;border-top:1px solid var(--c-line)}
.h2{margin-top:14px;font-weight:600;font-size:25px;line-height:1.7;color:var(--c-emerald-deep);letter-spacing:.06em}
.prose{margin-top:30px}
.prose p{margin:0 0 1.4em;font-size:15px;line-height:2.1}
.prose p:last-child{margin-bottom:0}
#message .prose p:first-child{font-family:var(--f-head);font-weight:500;font-size:15.5px;line-height:2.2;padding:2px 0 2px 16px;border-left:2px solid var(--c-sand)}
/* 結び：深いエメラルドの紙 */
.close{background:var(--grain),radial-gradient(120% 80% at 80% 0%,rgba(255,255,255,.08),transparent 60%),var(--c-invert);color:var(--c-invert-ink);padding:84px var(--wrap-x) 72px;position:relative}
.close .fv__card{text-align:center}
.close .fv__card::before{right:auto;left:50%;top:-50px;width:40px;height:40px;margin-left:-20px;background-image:url("everysta-letter/star.webp");filter:brightness(0) invert(.94) sepia(.2);transform:none;opacity:.9}
.close__p{margin:0;font-family:var(--f-head);font-weight:500;font-size:15px;line-height:2.2}
.close__h{margin:34px 0 18px;font-weight:500;font-style:italic;font-size:50px;line-height:1.1;color:#fff}
.close__h::after{content:"";display:block;width:150px;height:40px;margin:14px auto 0;background:url("everysta-letter/divider.webp") center/contain no-repeat;filter:brightness(0) invert(.92);opacity:.7}
.close .btn{background:var(--c-surface);color:var(--c-emerald-deep);box-shadow:0 2px 0 rgba(0,0,0,.18)}
.close .btn--sub{background:transparent;color:var(--c-invert-ink);border:1px solid rgba(251,248,241,.7);font-size:13.5px;letter-spacing:.02em}
.close .btns{width:min(340px,100%)}
/* フッター */
.foot{background:var(--c-emerald-deep);color:var(--c-invert-ink);padding:44px var(--wrap-x) 110px}
.foot__logo{margin:0 0 14px;font-family:var(--f-en);font-weight:600;font-size:22px;letter-spacing:.14em}
.foot__logo span{font-family:var(--f-head);font-size:12px;letter-spacing:.1em;margin-left:6px}
.foot nav{flex-direction:column;gap:6px}
.foot a{color:var(--c-invert-ink);opacity:.9}
.stick .btn{background:var(--c-accent)}
.stick .btn--sub{background:var(--c-surface)}
.fv .lead{font-size:14px;letter-spacing:.01em}
@media (max-width:400px){.prose p{letter-spacing:.01em}}
.card.link{font-size:13.5px;letter-spacing:0;padding:15px 14px 15px 16px}
.fv__h1 .l2{width:min-content;max-width:none}
/* 2回目の調整：見出しを案に近い大きさへ／PC背景に木漏れ日の影 */
.fv__h1 .l1{font-size:48px}.fv__h1 .l2{font-size:70px}
@media (min-width:1024px){
  body::before{content:"";position:fixed;left:-120px;top:-80px;width:720px;height:700px;pointer-events:none;z-index:0;background:url("everysta-letter/sprig.webp") center/contain no-repeat;filter:blur(7px);opacity:.13;transform:rotate(-28deg)}
  .shell{position:relative;z-index:1}
}