/* 星露の庭 — 紹介ページ（黄昏の空 → 羊皮紙の本 → 石板の見出し） */
:root{
  --ink:#3a2f2a; --paper:#fbf5e8; --paper2:#f1e6cf; --gold:#e9bf72; --rose:#c94a77; --night:#1c2050; --dusk:#5a3f7c;
  --ff-t:'Zen Old Mincho','Hiragino Mincho ProN','Yu Mincho',serif;
  --ff-ui:'Zen Maru Gothic','Hiragino Maru Gothic ProN','Hiragino Sans',sans-serif;
  --ff-en:'Cinzel','Times New Roman',serif;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;color:var(--ink);font:500 16px/1.9 var(--ff-ui);background:var(--paper);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
#petals{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:3}

/* ── ヒーロー：黄昏の空 */
.hero{position:relative;overflow:hidden;color:#fff6e8;padding:calc(56px + env(safe-area-inset-top,0px)) 16px 0;
  background:radial-gradient(ellipse 80% 40% at 50% 100%,#f0a98a 0,rgba(240,169,138,0) 70%),linear-gradient(#171c44 0,#2c2a62 38%,#5a3f7c 70%,#a86a8e 100%)}
.stars{position:absolute;inset:0;pointer-events:none}
.stars i{position:absolute;border-radius:50%;background:#fff;box-shadow:0 0 6px 1px rgba(255,240,210,.9);opacity:.25;animation:twinkle var(--d,3s) ease-in-out infinite alternate;animation-delay:var(--t,0s)}
@keyframes twinkle{to{opacity:1;transform:scale(1.6)}}
.hero-in{position:relative;max-width:1080px;margin:0 auto;display:flex;flex-direction:column;align-items:center;text-align:center}
.kicker{margin:0 0 12px;font:700 13px/1.4 var(--ff-ui);letter-spacing:.3em;padding:4px 14px;border-radius:999px;background:rgba(255,255,255,.12);box-shadow:inset 0 0 0 1px rgba(255,255,255,.25)}
.logo{margin:0;width:min(560px,88vw)}
.logo .t{display:block}
.logo-svg{display:block;width:100%;height:auto;overflow:visible;filter:drop-shadow(0 0 12px rgba(255,214,150,.55)) drop-shadow(0 2px 2px rgba(40,20,60,.6))}
.logo-svg .ch{opacity:0;transform-box:fill-box;transform-origin:50% 100%;animation:chIn 1.1s cubic-bezier(.2,.9,.3,1) forwards;animation-delay:calc(.2s + var(--i) * .26s)}
@keyframes chIn{0%{opacity:0;transform:translateY(1.6px) scale(.92);filter:blur(1.2px)}60%{opacity:1;filter:blur(0)}100%{opacity:1;transform:none}}
.logo-svg .shine{animation:shine 3.6s ease-in-out 1.6s infinite}
@keyframes shine{0%{transform:translateX(0)}45%,100%{transform:translateX(70px)}}
.en{margin:10px 0 0;font:500 clamp(11px,2.8vw,14px)/1 var(--ff-en);letter-spacing:.42em;padding-left:.42em;opacity:.85}
.lead{margin:22px 0 0;font:700 clamp(18px,4.6vw,24px)/1.9 var(--ff-t);letter-spacing:.1em;text-shadow:0 2px 10px rgba(20,10,40,.5)}
.hero-shot{margin:34px 0 0;width:min(1000px,100%);border-radius:18px 18px 0 0;overflow:hidden;box-shadow:0 -10px 40px rgba(20,10,40,.35),0 0 0 6px rgba(255,246,232,.14)}

/* 石板のボタン（plate.js の石板を使う） */
.cta{display:inline-block;margin-top:24px;width:min(300px,78vw);text-decoration:none;font:700 clamp(18px,5vw,22px)/1 var(--ff-t);letter-spacing:.3em}
.cta .plate-body{padding-left:.3em;color:#fff}
.plate{position:relative;display:block;aspect-ratio:var(--ar);color:#f1f0f6}
.plate .pl{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;user-select:none}
.plate .pl.stone{filter:drop-shadow(0 4px 6px rgba(20,16,40,.3))}
.plate .pl.sway{animation:leafSway 4.2s ease-in-out infinite alternate}
@keyframes leafSway{0%{transform:rotate(-1.6deg)}100%{transform:rotate(1.8deg)}}
.plate-body{position:absolute;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;line-height:1.25;text-shadow:0 2px 0 rgba(18,16,36,.6),0 0 10px rgba(18,16,36,.35)}
.plate-flowers{position:absolute;inset:0;pointer-events:none}
.pf{position:absolute;width:calc(22px * var(--s,1));height:calc(22px * var(--s,1));margin:calc(-11px * var(--s,1)) 0 0 calc(-11px * var(--s,1));animation:pfIn .6s cubic-bezier(.2,1.6,.4,1) backwards;transform:rotate(var(--r,0deg))}
.pf svg{width:100%;height:100%;display:block;filter:drop-shadow(0 1px 1px rgba(0,0,0,.25))}
.pf .pt ellipse{fill:var(--c1,#f2789f)} .pf .pt2 ellipse{fill:var(--c2,#ffc4d6)} .pf .ct{fill:#ffe08a}
.pf.fall{animation:pfOut .7s ease-in forwards}
@keyframes pfIn{0%{transform:rotate(calc(var(--r,0deg) - 90deg)) scale(0)}100%{transform:rotate(var(--r,0deg)) scale(1)}}
@keyframes pfOut{to{transform:rotate(calc(var(--r,0deg) + 80deg)) translateY(18px) scale(.5);opacity:0}}
a.cta:active .plate-body{transform:translateY(2px)}

/* ── 本文 */
main{position:relative;z-index:1;background:linear-gradient(var(--paper),var(--paper2) 60%,var(--paper))}
.sec{max-width:1000px;margin:0 auto;padding:clamp(56px,9vw,96px) 16px 0}
.head{margin:0 auto 18px;width:min(420px,88vw);font:900 clamp(20px,5vw,26px)/1.3 var(--ff-t);letter-spacing:.2em}
.head .plate-body span,.head .plate-body{color:#fff}
.sub{max-width:640px;margin:0 auto 26px;text-align:center;font-size:15.5px}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .9s ease,transform .9s cubic-bezier(.2,.8,.3,1)}
.reveal.in{opacity:1;transform:none}

/* 物語：本 */
.book{display:grid;grid-template-columns:1fr 1fr;border-radius:12px;background:linear-gradient(90deg,#efe6d2 0,#fbf5e8 46%,#d9ccb2 50%,#fbf5e8 54%,#f3ead8 100%);box-shadow:0 0 0 5px #6b4e3a,0 0 0 8px #3e2c22,0 24px 50px rgba(40,20,30,.28)}
.book .page{padding:clamp(18px,4vw,40px)}
.book .pic img{border-radius:6px 14px 8px 12px;transform:rotate(-1.4deg);box-shadow:0 2px 0 rgba(90,60,30,.15)}
.book .txt{display:flex;flex-direction:column;justify-content:center}
.book .ch{margin:0;font:500 12px/1 var(--ff-en);letter-spacing:.3em;opacity:.6}
.book h2{margin:8px 0 14px;font:900 clamp(22px,4.6vw,30px)/1.4 var(--ff-t);letter-spacing:.12em}
.tale{margin:0;font:500 clamp(15.5px,3.6vw,17px)/2.2 var(--ff-t);letter-spacing:.05em}
.book .note{margin:18px 0 0;font-size:14px;opacity:.8}

/* 遊び方 */
.steps{list-style:none;margin:0 auto;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:16px;max-width:860px}
.steps li{display:flex;gap:14px;padding:18px 18px 18px 16px;border-radius:18px;background:#fffdf6;box-shadow:inset 0 0 0 1.5px rgba(201,162,74,.45),0 6px 18px rgba(60,40,20,.08)}
.steps .num{flex:none;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;margin-top:2px;font:500 17px/1 var(--ff-en);font-style:normal;color:#fff;background:radial-gradient(circle at 35% 30%,#7a86b8,#3e4470);box-shadow:0 0 0 2px #e9bf72}
.steps h3{margin:0 0 4px;font:900 18px/1.5 var(--ff-t);letter-spacing:.06em}
.steps p{margin:0;font-size:15px;line-height:1.85}

/* 1面目を遊べる盤 */
.demo{max-width:420px;margin:30px auto 0;padding:20px 18px 18px;border-radius:22px;text-align:center;color:#fff6e8;background:linear-gradient(#2c2a62,#5a3f7c);box-shadow:0 0 0 5px #6b4e3a,0 0 0 8px #3e2c22,0 18px 40px rgba(30,20,60,.3)}
.demo-hd{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:12px}
.demo-t{margin:0;font:700 15px/1.4 var(--ff-t);letter-spacing:.1em}
.demo-dew{margin:0;font-size:13px}
.demo-dew b{font:500 22px/1 var(--ff-en);color:#bfe4ff}
.demo-board{position:relative;display:grid;gap:8px;margin:0 auto;width:min(300px,100%);aspect-ratio:1}
.demo-cell{position:relative;border:0;border-radius:14px;padding:0;background:linear-gradient(#e4d8c0,#c9b994);box-shadow:inset 0 -4px 0 rgba(90,70,40,.25)}
.demo-cell[data-k="4"]{background:linear-gradient(#bfe39a,#8cc46a)}
.demo-cell svg{position:absolute;left:10%;bottom:6%;width:80%;height:88%;overflow:visible;pointer-events:none}
.demo-cell .remaining{position:absolute;right:10%;top:9%;display:grid;place-items:center;width:18px;height:18px;border-radius:50%;font:800 12px/1 var(--ff-ui);color:#443249;background:#fffcef;pointer-events:none}
.demo-cell[data-bud]{cursor:pointer}
.demo-cell[data-bud]:focus-visible{outline:3px solid #ffe08a;outline-offset:2px}
.demo-cell.pop svg{animation:bump .45s cubic-bezier(.2,1.6,.4,1)}
@keyframes bump{0%{transform:scale(1.25,.8)}100%{transform:none}}
.dd{position:absolute;width:14px;height:18px;margin:-9px 0 0 -7px;border-radius:50% 50% 50% 50%/60% 60% 40% 40%;background:radial-gradient(circle at 35% 35%,#fff 0 18%,#bfe4ff 35%,#5a9ad8 90%);box-shadow:0 0 10px rgba(170,220,255,.9);pointer-events:none;transition:left .16s linear,top .16s linear,opacity .2s}
.demo-msg{margin:12px 0 4px;min-height:1.9em;font:700 14px/1.9 var(--ff-t)}
.demo-reset{border:0;border-radius:999px;padding:6px 18px;font:700 13px/1.6 var(--ff-ui);color:var(--ink);background:#fbf5e8;cursor:pointer}

/* 色が戻る：見比べ */
.compare{position:relative;max-width:620px;margin:0 auto;aspect-ratio:1;border-radius:18px;overflow:hidden;box-shadow:0 0 0 5px #fffdf6,0 0 0 6.5px rgba(201,162,74,.6),0 16px 36px rgba(60,40,20,.18);--x:50%}
.compare img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.c-before{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--x)) 0 0)}
.c-bar{position:absolute;top:0;bottom:0;left:var(--x);width:3px;margin-left:-1.5px;background:#fff;box-shadow:0 0 10px rgba(255,255,255,.9)}
.c-bar::after{content:"";position:absolute;top:50%;left:50%;width:34px;height:34px;margin:-17px 0 0 -17px;border-radius:50%;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233a2f2a' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 7l-5 5 5 5M15 7l5 5-5 5'/%3E%3C/svg%3E") center/20px no-repeat;box-shadow:0 2px 8px rgba(0,0,0,.25)}
.compare input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;touch-action:pan-y}
.c-l,.c-r{position:absolute;bottom:12px;padding:2px 12px;border-radius:999px;font:700 12px/1.8 var(--ff-ui);color:#fff;background:rgba(30,24,50,.55);pointer-events:none}
.c-l{left:12px}.c-r{right:12px}
.wide{margin:30px auto 0;max-width:820px}
.wide img{border-radius:16px;box-shadow:0 14px 32px rgba(60,40,20,.18)}
.wide figcaption{margin-top:10px;text-align:center;font-size:14px;opacity:.8}

/* 4つの庭 */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{display:flex;flex-direction:column;border-radius:20px;overflow:hidden;background:#fffdf6;box-shadow:inset 0 0 0 1.5px rgba(201,162,74,.45),0 8px 22px rgba(60,40,20,.1)}
.card img{aspect-ratio:4/5;object-fit:cover}
.card > div{padding:16px 18px 20px}
.card .no{margin:0;font:500 11px/1 var(--ff-en);letter-spacing:.3em;opacity:.6}
.card h3{margin:6px 0 2px;font:900 21px/1.4 var(--ff-t);letter-spacing:.12em}
.card .fl{margin:0 0 6px;font-size:13px;opacity:.75}
.card p{margin:0;font-size:15px}
.card.r0 h3{color:#c94a77}.card.r1 h3{color:#5a48c8}.card.r2 h3{color:#c8661c}.card.r3 h3{color:#c81d3a}

/* 庭飾り */
.orn-list{list-style:none;padding:0;margin:22px auto 0;max-width:760px;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.orn-list li{display:flex;justify-content:space-between;align-items:baseline;gap:8px;padding:10px 16px;border-radius:14px;background:#fffdf6;box-shadow:inset 0 0 0 1.5px rgba(201,162,74,.4)}
.orn-list b{font:900 16px/1.4 var(--ff-t)}
.orn-list span{font-size:13px;color:var(--rose)}

/* 心得 */
.tip-list{list-style:none;padding:0;margin:0 auto;max-width:860px;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.tip-list li{padding:18px;border-radius:18px;background:#fffdf6;box-shadow:inset 0 0 0 1.5px rgba(201,162,74,.45)}
.tip-list h3{margin:0 0 4px;font:900 17px/1.5 var(--ff-t)}
.tip-list p{margin:0;font-size:15px}
kbd{display:inline-block;min-width:1.7em;padding:0 6px;border-radius:6px;font:700 13px/1.6 var(--ff-ui);text-align:center;background:#3e4470;color:#fff}

/* FAQ */
.faq details{max-width:760px;margin:0 auto 10px;padding:4px 18px;border-radius:14px;background:#fffdf6;box-shadow:inset 0 0 0 1.5px rgba(201,162,74,.4)}
.faq summary{cursor:pointer;padding:10px 0;font:900 16px/1.6 var(--ff-t)}
.faq details p{margin:0 0 12px;font-size:15px}

.last{text-align:center;padding-bottom:clamp(60px,10vw,100px)}
.last-t{margin:0;font:700 clamp(18px,4.6vw,22px)/1.8 var(--ff-t);letter-spacing:.1em}
.foot{position:relative;z-index:1;padding:22px 16px calc(22px + env(safe-area-inset-bottom,0px));text-align:center;font-size:12.5px;color:#f1e6cf;background:#2c2a62}
.foot p{margin:0;line-height:2}
.foot .cg{white-space:nowrap}

@media (max-width:720px){
  .book{grid-template-columns:1fr;background:linear-gradient(#fbf5e8,#f3ead8)}
  .steps,.tip-list,.cards{grid-template-columns:1fr}
  .orn-list{grid-template-columns:repeat(2,1fr)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .logo-svg .ch{animation:none;opacity:1}.logo-svg .shine,.stars i,.plate .pl.sway,.pf{animation:none}
}
.cta.plate{display:block;margin:24px auto 0}
.wide.sq{max-width:620px}
.card.r4{grid-column:1/-1}
.card.r4 h3{color:#a8549a}
.card .no-img{display:flex;align-items:center;justify-content:center;min-height:120px;background:linear-gradient(120deg,#f2d8cc,#ffe6b0)}
.sp-ic{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:0}
.sp-ic b{padding:6px 14px;border-radius:999px;font:900 15px/1.4 var(--ff-t);color:#fff}
.sp-ic .s0{background:#e8789c}.sp-ic .s1{background:#e8902c}.sp-ic .s2{background:#7c6af2}
.card.r4{grid-column:auto}
/* PC：最後の王妃の花園は横いっぱいの1枚に（左に絵・右に文。絵は上の段の絵と同じ幅にそろえる）。2026-11-11 本人 */
@media (min-width:721px){
  .card.r4{grid-column:1/-1;display:grid;grid-template-columns:calc(50% - 9px) 1fr;align-items:center}
  .card.r4 > div{padding:28px clamp(22px,4vw,48px)}
  .card.r4 h3{font-size:clamp(24px,2.6vw,30px)}
  .card.r4 .fl{font-size:14px;margin-bottom:12px}
  .card.r4 p{font-size:16px}
}
.flowers{max-width:860px;margin:26px auto 0;padding:18px;border-radius:18px;background:#fffdf6;box-shadow:inset 0 0 0 1.5px rgba(201,162,74,.45)}
.fl-h{margin:0 0 12px;text-align:center;font:900 18px/1.5 var(--ff-t)}
.fl-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.fl-list li{display:flex;flex-direction:column;gap:2px;padding:10px 14px;border-radius:14px;color:#fff}
.fl-list b{font:900 16px/1.4 var(--ff-t)}
.fl-list span{font-size:13.5px;line-height:1.6}
.fl-list .f0{background:#d8628c}.fl-list .f1{background:#d0781e}.fl-list .f2{background:#6a58d8}.fl-list .f3{background:#b8243e}
.fl-note{margin:12px 0 0;text-align:center;font-size:14px}
@media (max-width:720px){.fl-list{grid-template-columns:1fr}}