@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Noto+Sans+JP:wght@400;500;600;700&family=Zen+Maru+Gothic:wght@400;500;700;900&display=swap');
:root{--cream:#fff9f5;--paper:#fffdfb;--rose:#d9798b;--rose-deep:#a94f66;--pink:#f3cbd2;--ink:#513d43;--muted:#8e7078;--gold:#c7a16f;--mint:#cfe5df;--line:#efd9de;--shadow:0 16px 48px rgba(143,84,99,.12);--lab:#071014;--lab2:#0d1a20;--lab3:#12282f;--acid:#9bc9c6;--labline:#29434c}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}body{margin:0;color:var(--ink);background:linear-gradient(#fffaf7,#fff6f4);font-family:'Noto Sans JP','Yu Gothic',sans-serif;line-height:1.8}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(1180px,92vw);margin:auto}
.public-world h1,.public-world h2,.public-world h3,.public-world .brand,.public-world .toc-card b{font-family:'Zen Maru Gothic','Noto Sans JP',sans-serif}.nav{position:sticky;top:0;z-index:50;background:rgba(255,250,247,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.navin{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;flex-direction:column;line-height:1.1}.brand span{font:600 10px/1.2 'DM Serif Display',serif;letter-spacing:.18em;color:#b77b88}.brand b{font-size:16px;color:#9f5365}.navlinks{display:flex;gap:7px;align-items:center;font-size:13px;font-weight:600}.navlinks a{padding:9px 10px;border-radius:999px}.navlinks a:hover{background:#fff}.secret-link{border:1px solid #dab4bd;background:#fff}.menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
.hero{min-height:74vh;display:grid;place-items:center;position:relative;overflow:hidden;background:radial-gradient(circle at 50% 22%,rgba(255,255,255,.95),rgba(255,245,246,.75) 43%,rgba(245,207,215,.55)),linear-gradient(135deg,#fff5f2,#edf6f4)}.hero:before{content:'✦  ♡  ✦';position:absolute;font:italic clamp(100px,22vw,320px) 'DM Serif Display',serif;color:rgba(220,137,154,.07);letter-spacing:.05em;white-space:nowrap;transform:rotate(-6deg)}.hero:after{content:'';position:absolute;inset:auto 0 0;height:180px;background:linear-gradient(transparent,var(--cream))}.hero-inner{position:relative;z-index:2;text-align:center;padding:86px 20px}.hero-kicker{letter-spacing:.32em;font:600 12px 'DM Serif Display',serif;color:#b47382}.hero h1{font-size:clamp(42px,7vw,84px);line-height:1.25;color:#9f4d62;text-shadow:0 3px #fff,0 10px 32px rgba(177,80,101,.14);margin:12px 0 20px}.hero p{font-family:'Zen Maru Gothic',sans-serif;font-weight:600;font-size:clamp(17px,2.2vw,22px);line-height:2;color:#704d57}.cta,.detail-btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:999px;background:linear-gradient(135deg,#da8797,#c96d82);color:#fff;padding:13px 24px;cursor:pointer;box-shadow:0 10px 28px rgba(185,93,113,.23);font-weight:700}
section{padding:74px 0}.section-title{text-align:center;margin-bottom:34px}.section-title.readable{width:min(820px,100%);margin-left:auto;margin-right:auto;background:rgba(255,255,255,.72);border:1px solid rgba(235,207,214,.8);border-radius:28px;padding:20px 26px;box-shadow:0 10px 32px rgba(147,83,98,.07)}.section-title small{letter-spacing:.22em;color:#b26d7d;font-weight:700}.section-title h2{font-size:clamp(30px,4vw,44px);margin:5px 0;color:#8f4458;font-weight:900;letter-spacing:.04em;text-shadow:0 2px #fff}.section-title p{margin:4px auto 0;max-width:760px;line-height:1.9;color:#6d535a}.world-heading h2{font-size:clamp(36px,5vw,52px)}.world-heading small{font-size:13px}.card{background:rgba(255,253,251,.96);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}
.contents-section{padding-top:50px}.toc-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.toc-card{min-height:118px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;display:flex;flex-direction:column;gap:3px;transition:.2s;box-shadow:0 8px 24px rgba(135,79,93,.06)}.toc-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(135,79,93,.12)}.toc-card span{font:600 11px 'DM Serif Display',serif;color:#c48694;letter-spacing:.15em}.toc-card b{font-size:18px;color:#84505c}.toc-card small{color:#a1868d}.secret-toc{background:linear-gradient(145deg,#f9f2f3,#eef5f3);border-style:dashed}
.world-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:22px}.prose{padding:30px}.prose.wide{max-width:930px;margin:0 auto}.prose p{line-height:2}.feature-copy h3{margin-top:0;color:#a15367}.invite-card{padding:34px;text-align:center;background:linear-gradient(150deg,#fff,#fff3f5);display:grid;align-content:center;line-height:1.9}.invite-card .en{font:italic 28px 'DM Serif Display',serif;color:#b65d72;margin-bottom:14px}.public-lore{display:grid;gap:13px;margin-top:24px}.lore{padding:0;overflow:hidden}.lore summary{cursor:pointer;font-weight:800;font-family:'Zen Maru Gothic',sans-serif;color:#8b4b5c;font-size:18px;padding:20px 24px;background:#fff9fa}.lore .content{padding:22px 26px 26px;white-space:pre-line;line-height:2.05;color:#5f4a50}
.character-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.char{overflow:hidden}.char-visual{height:360px;display:grid;place-items:center;position:relative;overflow:hidden;background:#f6e9ec}.char-visual img{width:100%;height:100%;object-fit:cover;object-position:center top;image-rendering:auto}.char-body{padding:18px}.tag{display:inline-block;border:1px solid #ddb8c0;border-radius:999px;padding:5px 9px;font-size:12px;letter-spacing:.12em;background:#fff}.char h3{margin:8px 0 3px;font-size:21px}.meta{font-size:13px;color:#95717a}.char .detail-btn{width:100%;margin-top:15px;padding:10px 16px;box-shadow:none}
.term-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.term-card,.location-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.term-card b,.location-card b{color:#965467;font-family:'Zen Maru Gothic',sans-serif}.term-card p,.location-card p{margin:.5em 0 0;color:#70575e}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.location-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.freeplay{text-align:center;margin:28px auto 0;max-width:900px;font-weight:600;color:#7f5b64}
.participant-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.participant{padding:18px}.participant-image{height:240px;border-radius:18px;background:linear-gradient(#ffeff2,#fff);display:grid;place-items:center;overflow:hidden}.participant-image img{height:100%;width:100%;object-fit:cover}.placeholder-person{width:92px;height:118px;border-radius:48% 48% 42% 42%;background:#d5bcc3;position:relative}.placeholder-person:after{content:'';position:absolute;width:155px;height:88px;border-radius:70px 70px 0 0;background:#d5bcc3;left:50%;top:92px;transform:translateX(-50%)}.participant h3{margin-bottom:6px}.participant small{color:#a27f87}.empty-state{grid-column:1/-1;padding:32px;text-align:center;border:1px dashed #dfc3c8;border-radius:22px;background:#fffafa;line-height:1.9}code{background:#f8e8ec;padding:.15em .45em;border-radius:6px}
.form-sheet{padding:10px 24px;max-width:900px;margin:auto}.form-row{padding:15px 4px;border-bottom:1px dashed #e5cbd1;min-height:58px}.form-row:last-child{border-bottom:0}.form-row small{display:block;color:#9a7b83;margin-top:4px}.subhead{margin-top:48px}.question-list{padding:18px 28px;max-width:900px;margin:auto}.question-list p{padding:12px 0;border-bottom:1px dashed #e8d3d8;margin:0}.question-list p:last-child{border-bottom:0}.rules-card{padding:22px 28px;max-width:920px;margin:auto}.rules-card li{margin:10px 0}.known{max-width:760px;margin:26px auto 0;padding:30px;text-align:center}.known h3{color:#955064}.known .closing{font-family:'Zen Maru Gothic',sans-serif;font-weight:700;color:#9e5065;font-size:18px}.preserve-lines{white-space:pre-line}
.dialog{border:0;padding:0;border-radius:26px;max-width:960px;width:min(960px,94vw);box-shadow:0 30px 90px rgba(67,37,47,.26);background:#fffdfa;color:var(--ink)}.dialog::backdrop{background:rgba(60,36,43,.48);backdrop-filter:blur(6px)}.modal-grid{display:grid;grid-template-columns:360px 1fr;min-height:560px}.modal-art{background:#f3e9ec;display:grid;place-items:center;overflow:hidden;position:relative}.modal-art img{width:100%;height:100%;object-fit:cover;object-position:center top}.modal-copy{padding:30px;position:relative}.modal-close{position:absolute;right:16px;top:14px;border:0;background:#f7e8eb;border-radius:50%;width:38px;height:38px;cursor:pointer}.modal-copy h2{margin:10px 0 4px}.modal-meta{color:#a77b84;margin-bottom:18px}.tabs{display:flex;flex-wrap:wrap;gap:7px;margin:16px 0}.tabs button{border:1px solid #e7cfd4;background:#fff;border-radius:999px;padding:8px 12px;cursor:pointer}.tabs button.active{background:#f2d7dc}.tab-panel{line-height:1.95;white-space:pre-line}.quotes{border-left:3px solid #e9c5cc;padding-left:15px}.quotes p{margin:8px 0}.footer{text-align:center;padding:36px 20px 52px;color:#9a747e;display:flex;flex-direction:column;gap:4px}.footer strong{font-family:'Zen Maru Gothic';font-size:18px}.footer span{font:12px 'DM Serif Display';letter-spacing:.18em}
/* secret pages */.lab-body{margin:0;background:radial-gradient(circle at 75% 0,#17313a,#091419 42%,#050c0f 85%);color:#d8e3e5;font-family:'Noto Sans JP','Yu Gothic',sans-serif;min-height:100vh}.lab-shell{min-height:100vh;position:relative}.lab-shell:before{content:'';position:fixed;inset:0;pointer-events:none;background:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px);background-size:100% 4px;opacity:.25}.lab-header{border-bottom:1px solid #203942;background:#071115dd;backdrop-filter:blur(12px);position:sticky;top:0;z-index:30}.lab-header .wrap{height:66px;display:flex;align-items:center;justify-content:space-between}.lab-brand{font-family:monospace;letter-spacing:.15em}.lab-header a{color:#a9c3c7;font-size:13px}.lab-main{padding:54px 0 80px}.lab-title{font-family:monospace;font-weight:400;letter-spacing:.1em;font-size:clamp(29px,5vw,50px);margin:0 0 8px}.lab-sub{color:#84a5aa;font-family:monospace}.gate-wrap{min-height:calc(100vh - 66px);display:grid;place-items:center;padding:35px 18px}.gate{width:min(560px,100%);border:1px solid #2b4851;background:rgba(7,17,21,.9);padding:34px;border-radius:12px;box-shadow:inset 0 0 70px #0005,0 20px 70px #0005}.gate h1{font-family:monospace;font-weight:400}.gate input{width:100%;margin:14px 0;padding:14px 15px;background:#050d10;border:1px solid #33545d;color:#e4edef;border-radius:6px}.gate button{width:100%;padding:14px;background:#143039;border:1px solid #5b8188;color:#edf4f5;border-radius:6px;cursor:pointer}.lab-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:22px;margin-top:34px}.lab-nav{position:sticky;top:88px;align-self:start;border:1px solid #28424b;background:#09151a;border-radius:10px;padding:10px}.lab-nav a,.lab-nav button{display:block;width:100%;text-align:left;padding:12px;border:0;border-bottom:1px solid #1d333b;background:transparent;color:#b9ced1;font-family:monospace;cursor:pointer}.lab-content{display:grid;gap:18px}.lab-card{border:1px solid #29444d;background:#09151acc;border-radius:10px;padding:24px;box-shadow:inset 0 0 50px #0003}.lab-card h2,.lab-card h3{font-family:monospace;font-weight:400;letter-spacing:.05em}.lab-card p,.lab-card li{line-height:1.9}.lab-card ul{padding-left:20px}.secret-lock{border:1px dashed #38555d;padding:22px;border-radius:8px;text-align:center}.secret-lock input{width:min(420px,100%);padding:12px;background:#050d10;border:1px solid #35515a;color:white;border-radius:5px;margin:10px 0}.secret-lock button{padding:11px 18px;background:#153039;color:white;border:1px solid #557a82;border-radius:5px}.secret-content{display:none}.secret-content.show{display:block}.data{display:grid;grid-template-columns:190px 1fr;border-top:1px solid #193039;padding:10px 0;font-family:monospace;font-size:13px}.data b{color:#8db1b1}.lab-char-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.lab-char{display:grid;grid-template-columns:120px 1fr;gap:16px;border:1px solid #28414a;background:#0a171c;padding:14px;border-radius:9px}.lab-char img{width:120px;height:170px;object-fit:cover;object-position:center top;background:#0f2026;border-radius:6px;filter:grayscale(1) contrast(1.15) brightness(.75)}.lab-char p{margin:.35em 0;font-size:13px}.prototype-note{font-size:12px;color:#78979c;font-family:monospace;margin-top:28px}
@media(max-width:1000px){.toc-grid{grid-template-columns:repeat(3,1fr)}.world-layout,.modal-grid,.lab-layout{grid-template-columns:1fr}.character-grid,.participant-grid,.location-grid{grid-template-columns:repeat(2,1fr)}.term-grid{grid-template-columns:repeat(2,1fr)}.lab-nav{position:static;display:grid;grid-template-columns:repeat(2,1fr)}.modal-art{height:430px}.modal-art img{object-fit:contain}.lab-char-grid{grid-template-columns:1fr}}
@media(max-width:760px){html{scroll-padding-top:64px}.navin{min-height:60px}.brand b{font-size:14px}.menu-toggle{display:block}.navlinks{display:none;position:absolute;top:60px;left:0;right:0;background:#fffaf7;border-bottom:1px solid #ead4d9;padding:12px 4vw;flex-direction:column;align-items:stretch}.navlinks.open{display:flex}.navlinks a{text-align:center;padding:11px}.hero{min-height:68vh}.hero-inner{padding:60px 16px}.hero h1{font-size:clamp(36px,12vw,58px)}section{padding:56px 0}.section-title.readable{padding:16px 15px;border-radius:20px}.toc-grid{grid-template-columns:repeat(2,1fr)}.world-layout,.two-col{grid-template-columns:1fr}.character-grid,.participant-grid,.location-grid,.term-grid{grid-template-columns:1fr}.char{display:grid;grid-template-columns:43% 57%;min-height:210px}.char-visual{height:100%;min-height:220px}.char-body{display:flex;flex-direction:column;justify-content:center}.char .detail-btn{margin-top:12px}.modal-art{height:300px}.modal-copy{padding:22px 18px}.tabs{gap:5px}.tabs button{padding:7px 10px;font-size:12px}.form-sheet,.question-list,.rules-card{padding-left:18px;padding-right:18px}.lab-main{padding-top:30px}.lab-card{padding:18px}.lab-nav{grid-template-columns:1fr}.lab-char{grid-template-columns:90px 1fr}.lab-char img{width:90px;height:130px}.data{grid-template-columns:1fr;gap:4px}.gate{padding:24px}.gate-wrap{align-items:start;padding-top:60px}}
@media(max-width:430px){.wrap{width:min(94vw,1180px)}.toc-grid{grid-template-columns:1fr}.hero p br{display:none}.char{grid-template-columns:42% 58%}.char h3{font-size:17px}.char .meta{font-size:12px}.char .tag{font-size:10px}.char-body{padding:14px}.location-card,.term-card{padding:15px}.modal-grid{display:block}.modal-art{height:260px}.modal-art img{object-fit:cover}.section-title h2{font-size:30px}}


/* v5: mechanical click feedback */
.gear-action{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:9px;overflow:hidden}
.gear-action .mini-gear{width:17px;height:17px;display:none;border:3px dotted currentColor;border-radius:50%;position:relative;box-sizing:border-box}
.gear-action .mini-gear:after{content:'';position:absolute;width:5px;height:5px;border:2px solid currentColor;border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%)}
.gear-action.is-loading .button-label{opacity:.45}
.gear-action.is-loading .mini-gear{display:inline-block;animation:gear-spin .55s linear infinite}
.gear-action.is-loading{pointer-events:none;box-shadow:inset 0 0 0 1px #d693a5,0 0 18px #eec7d2aa}
.modal-gear-mark{position:absolute;left:20px;bottom:18px;width:52px;height:52px;border:5px dotted rgba(255,255,255,.82);border-radius:50%;animation:gear-spin 7s linear infinite;filter:drop-shadow(0 2px 3px #5b45505c)}
.modal-gear-mark span{position:absolute;inset:13px;border:3px solid rgba(255,255,255,.9);border-radius:50%}
@keyframes gear-spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.gear-action.is-loading .mini-gear,.modal-gear-mark{animation:none}}

/* v6: source character art -> clean single-tone silhouette in CSS */
.char-visual{background:linear-gradient(180deg,#fbf5f1 0%,#f3e5e8 100%);overflow:hidden}
.char-visual img,
.modal-art img{
  filter:brightness(0) saturate(100%) opacity(.82);
  mix-blend-mode:multiply;
  transform:scale(1.02);
}
.char:hover .char-visual img{filter:brightness(0) saturate(100%) opacity(.9);transform:scale(1.045)}
.char-visual img{transition:transform .4s ease,filter .3s ease}
.modal-art{background:linear-gradient(145deg,#f6e8e9,#e9dadd)}
.modal-art img{object-fit:cover;object-position:center top}
/* Keep the normal generated source files intact under assets/characters-original/. */

/* v7: use generated silhouette artwork directly; do not recolor to black */
.char-visual img,.modal-art img{filter:none!important;mix-blend-mode:normal!important;opacity:1!important}
.char:hover .char-visual img{filter:none!important;transform:scale(1.025)}
.char-visual{background:#fbf3f4}
.modal-art{background:#fbf3f4}

/* v8 fixed: decorative background only for 世界観【表】 */
#world{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  background:#fffaf8;
}
#world::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background-image:url('./assets/world-omote-bg-clean.png');
  background-position:center top;
  background-size:cover;
  background-repeat:no-repeat;
  opacity:.58;
  pointer-events:none;
}
#world::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:rgba(255,250,248,.30);
  pointer-events:none;
}
#world > .wrap{
  position:relative;
  z-index:2;
}
#world .card{
  background:rgba(255,253,251,.90);
  backdrop-filter:blur(1.5px);
}
#world .lore summary{background:rgba(255,249,250,.94)}

/* v8: participant form copy button */
.copy-pf-wrap{display:flex;justify-content:flex-end;max-width:900px;margin:0 auto 12px}
.copy-pf-btn{border:1px solid #d9aeba;background:rgba(255,255,255,.94);color:#8d4d60;border-radius:999px;padding:10px 16px;display:inline-flex;align-items:center;gap:8px;cursor:pointer;box-shadow:0 8px 22px rgba(130,73,88,.09);font-weight:700;transition:transform .18s ease,background .18s ease,color .18s ease}
.copy-pf-btn:hover{transform:translateY(-2px);background:#fff7f8}
.copy-pf-btn.copied{background:#9d5c6e;color:#fff;border-color:#9d5c6e}

/* v8: always-findable back-to-top control */
.back-to-top{position:fixed;right:max(18px,env(safe-area-inset-right));bottom:max(18px,env(safe-area-inset-bottom));z-index:70;width:62px;height:62px;border-radius:50%;display:grid;place-items:center;align-content:center;gap:0;background:rgba(157,82,103,.93);color:#fff;border:1px solid rgba(255,255,255,.8);box-shadow:0 12px 32px rgba(84,48,60,.22);backdrop-filter:blur(8px);opacity:0;visibility:hidden;transform:translateY(12px) scale(.92);transition:.22s ease}
.back-to-top.show{opacity:1;visibility:visible;transform:none}
.back-to-top:hover{transform:translateY(-3px);background:#8f485e}
.back-to-top span{font-size:22px;line-height:1}
.back-to-top small{font:700 10px/1 'DM Serif Display',serif;letter-spacing:.12em;margin-top:3px}
@media(max-width:760px){#world::before{background-size:auto 100%;background-position:45% top;opacity:.50}.copy-pf-wrap{justify-content:stretch}.copy-pf-btn{width:100%;justify-content:center}.back-to-top{width:54px;height:54px;right:14px;bottom:14px}.back-to-top span{font-size:20px}}
@media(prefers-reduced-motion:reduce){.copy-pf-btn,.back-to-top{transition:none}}