:root {
  --ink:#241915; --muted:#75665f; --paper:#fffaf0; --paper-2:#f6eddd;
  --red:#8f2632; --red-dark:#5c1420; --gold:#b88a34; --green:#315b4a;
  --line:rgba(72,45,36,.16); --shadow:0 18px 60px rgba(66,34,28,.14);
  --radius:24px; --safe-bottom:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:"Hiragino Mincho ProN","Yu Mincho",YuMincho,"Noto Serif JP",serif;background:
  radial-gradient(circle at 10% 0%,rgba(184,138,52,.15),transparent 28%),
  radial-gradient(circle at 100% 15%,rgba(143,38,50,.11),transparent 31%),
  linear-gradient(135deg,#f9f0df,#fffdf7 50%,#f2e7d4);min-height:100vh}
body.modal-open{overflow:hidden}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.18;background-image:repeating-linear-gradient(45deg,rgba(143,38,50,.04) 0 1px,transparent 1px 14px)}
button,select,input{font:inherit} button{cursor:pointer}.hidden{display:none!important}
.app{width:min(1180px,100%);margin:auto;padding:20px clamp(14px,3vw,34px) calc(90px + var(--safe-bottom))}
header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:6px 2px 24px}
.brand{display:flex;align-items:center;gap:12px}.crest{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--red),var(--red-dark));box-shadow:0 10px 28px rgba(96,20,32,.25);font-size:23px}
h1{font-size:clamp(21px,4vw,31px);margin:0;letter-spacing:.08em}.subtitle{font-family:system-ui,sans-serif;font-size:12px;color:var(--muted);letter-spacing:.12em;margin-top:4px}
.header-actions{display:flex;gap:8px}.icon-btn,.ghost-btn{border:1px solid var(--line);background:rgba(255,255,255,.58);border-radius:999px;color:var(--ink);padding:10px 14px;backdrop-filter:blur(12px)}
.hero{position:relative;overflow:hidden;border:1px solid rgba(255,255,255,.7);background:linear-gradient(125deg,rgba(255,255,255,.82),rgba(255,247,231,.73));box-shadow:var(--shadow);border-radius:32px;padding:clamp(24px,5vw,54px);display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:center}
.hero:after{content:"百人一首";position:absolute;right:-18px;top:-25px;writing-mode:vertical-rl;font-size:90px;letter-spacing:.12em;color:rgba(143,38,50,.045);font-weight:700}
.eyebrow{color:var(--red);font-family:system-ui,sans-serif;font-weight:800;font-size:12px;letter-spacing:.18em;text-transform:uppercase}.hero h2{font-size:clamp(31px,6vw,64px);line-height:1.15;margin:12px 0 14px;letter-spacing:.04em}.hero p{font-family:system-ui,sans-serif;line-height:1.85;color:#5d504a;max-width:650px}.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.primary-btn{border:0;color:#fff;background:linear-gradient(135deg,var(--red),var(--red-dark));padding:14px 20px;border-radius:16px;box-shadow:0 12px 26px rgba(112,28,40,.24);font-weight:800}.secondary-btn{border:1px solid var(--line);background:#fff9;padding:14px 18px;border-radius:16px;font-weight:700;color:var(--ink)}
.progress-ring{width:min(230px,60vw);aspect-ratio:1;margin:auto;border-radius:50%;display:grid;place-items:center;position:relative}.progress-ring svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}.progress-track,.progress-value{fill:none;stroke-width:13}.progress-track{stroke:rgba(143,38,50,.12)}.progress-value{stroke:var(--red);stroke-linecap:round;transition:stroke-dashoffset .45s ease}.ring-inner{position:relative;text-align:center}.ring-number{font-family:system-ui,sans-serif;font-size:46px;font-weight:900}.ring-label{font-family:system-ui,sans-serif;font-size:12px;color:var(--muted)}
.section-title{display:flex;align-items:end;justify-content:space-between;gap:15px;margin:34px 2px 14px}.section-title h3{margin:0;font-size:22px}.section-title small{font-family:system-ui,sans-serif;color:var(--muted)}
.mode-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.mode-card{border:1px solid rgba(255,255,255,.76);background:rgba(255,251,244,.78);box-shadow:0 10px 34px rgba(66,34,28,.08);border-radius:22px;padding:22px;text-align:left;transition:.2s;min-height:170px;color:var(--ink)}.mode-card:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(66,34,28,.13)}.mode-icon{font-size:31px}.mode-card h4{font-size:19px;margin:13px 0 7px}.mode-card p{font-family:system-ui,sans-serif;color:var(--muted);font-size:13px;line-height:1.6;margin:0}.mode-card .tag{display:inline-block;margin-top:12px;font:700 11px system-ui,sans-serif;color:var(--red);background:rgba(143,38,50,.08);padding:5px 8px;border-radius:999px}
.stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.stat{border:1px solid var(--line);background:rgba(255,255,255,.55);border-radius:18px;padding:17px}.stat strong{display:block;font:900 27px system-ui,sans-serif}.stat span{font:12px system-ui,sans-serif;color:var(--muted)}.share-row,.share-actions{display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap;margin:14px 0 0}.share-actions{justify-content:center;margin:18px 0}
.panel{display:none;position:fixed;inset:0;z-index:10;background:rgba(38,24,20,.42);backdrop-filter:blur(8px);padding:clamp(8px,2vw,24px);overflow:auto}.panel.active{display:block}.game-shell{width:min(980px,100%);min-height:min(720px,calc(100vh - 30px));margin:auto;border-radius:30px;background:var(--paper);box-shadow:0 30px 90px rgba(20,10,8,.28);overflow:hidden;border:1px solid rgba(255,255,255,.8)}
.game-top{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:15px 18px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.92);position:sticky;top:0;z-index:6}.game-title{font-weight:800}.game-meta{display:flex;gap:8px;align-items:center;font:13px system-ui,sans-serif}.pill{background:var(--paper-2);border:1px solid var(--line);padding:7px 10px;border-radius:999px}.close-btn{border:0;background:var(--red);color:#fff;width:38px;height:38px;border-radius:50%;font-size:20px}
.game-body{padding:clamp(18px,5vw,42px)}.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}.filters select,.filters button,.kimari-toolbar select{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px}.filters button.active{background:var(--red);color:#fff}
.waka-card{min-height:430px;border-radius:27px;padding:clamp(25px,6vw,55px);background:linear-gradient(145deg,#fffdf8,#f4ead8);border:1px solid rgba(120,80,50,.13);box-shadow:inset 0 0 60px rgba(184,138,52,.08),0 18px 50px rgba(73,42,31,.11);display:grid;grid-template-columns:78px 1fr;gap:20px;position:relative;overflow:hidden}.waka-card:before{content:"";position:absolute;width:180px;height:180px;border:35px solid rgba(143,38,50,.035);border-radius:50%;right:-55px;bottom:-55px}.poem-no{writing-mode:vertical-rl;color:var(--red);font:800 13px system-ui,sans-serif;letter-spacing:.14em;border-right:1px solid var(--line);padding-right:15px}.poem-content{display:flex;flex-direction:column;justify-content:center}.poem-original{font-size:clamp(24px,5.1vw,43px);line-height:1.8;letter-spacing:.1em}.poem-reading{font-family:system-ui,sans-serif;font-size:clamp(13px,2.5vw,17px);line-height:1.9;color:var(--muted);margin-top:20px}.author{margin-top:25px;color:var(--red);font-weight:800}.author small{display:block;color:var(--muted);font:12px system-ui,sans-serif;margin-top:4px}.card-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:18px}.card-actions button{border:1px solid var(--line);background:#fff;padding:12px 16px;border-radius:14px}.card-actions .known{background:var(--green);color:#fff;border:0}.card-actions .again{background:var(--red);color:#fff;border:0}
.question-label{font:800 12px system-ui,sans-serif;color:var(--red);letter-spacing:.13em;text-transform:uppercase}.question{font-size:clamp(23px,5vw,41px);line-height:1.65;margin:15px 0 25px;letter-spacing:.07em}.choices{display:grid;gap:12px}.choice{border:1px solid var(--line);background:#fff;border-radius:17px;padding:17px 18px;text-align:left;color:var(--ink);font-size:clamp(16px,3vw,21px);line-height:1.55;transition:.15s}.choice:hover{border-color:rgba(143,38,50,.5);transform:translateX(3px)}.choice.correct,.karuta-card.correct{background:#e7f4ed;border-color:#2f7255}.choice.wrong,.karuta-card.wrong{background:#fae8e7;border-color:#a94343}.choice:disabled,.karuta-card:disabled{cursor:default}.choice-sub{display:block;color:var(--muted);margin:4px 0 0 25px}.feedback{min-height:72px;margin-top:18px;padding:15px 17px;border-radius:15px;background:var(--paper-2);font-family:system-ui,sans-serif;line-height:1.6}.feedback-poem{color:var(--muted)}.next-btn{margin-top:12px;width:100%;border:0;background:var(--red);color:#fff;padding:14px;border-radius:14px;font-weight:900}
.timer{font:900 clamp(34px,8vw,62px) system-ui,sans-serif;text-align:center;color:var(--red);margin:6px}.timer-unit{font-size:.35em}.scoreline{text-align:center;font:700 15px system-ui,sans-serif;color:var(--muted);margin-bottom:22px}.result{text-align:center;padding:32px 12px}.result .big{font:900 clamp(54px,13vw,90px) system-ui,sans-serif;color:var(--red)}.result h3{font-size:28px}.result p{font-family:system-ui,sans-serif;color:var(--muted);line-height:1.7}.result-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}
.settings-sheet{max-width:680px}.setting-row{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:17px 0;border-bottom:1px solid var(--line);font-family:system-ui,sans-serif}.toggle{position:relative;width:48px;height:27px}.toggle input{opacity:0}.slider{position:absolute;inset:0;background:#c7bcb5;border-radius:99px}.slider:before{content:"";position:absolute;width:21px;height:21px;left:3px;top:3px;border-radius:50%;background:#fff;transition:.2s}.toggle input:checked+.slider{background:var(--green)}.toggle input:checked+.slider:before{transform:translateX(21px)}.reset-wrap{margin-top:28px}
.credits-sheet{max-width:900px}.credits-lead,.credits-note,.credits-meta,.notice-box{font-family:system-ui,sans-serif}.credits-lead{line-height:1.9;color:#514641}.notice-box{margin:20px 0;padding:18px 20px;border:1px solid var(--line);border-radius:18px;background:#fff9}.notice-box h3{margin:0 0 10px}.notice-box ul{margin:0;padding-left:1.3em;line-height:1.8;color:#5d504a}.credits-heading{margin:30px 0 6px}.credits-note{color:var(--muted)}.credit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.credit-card{display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--ink);padding:18px;border:1px solid var(--line);border-radius:18px;background:#fff}.credit-card span{font:13px/1.65 system-ui,sans-serif;color:var(--muted)}.credit-card em{font:700 12px system-ui,sans-serif;color:var(--red)}.credits-meta{margin-top:26px;padding-top:18px;border-top:1px solid var(--line);font-size:12px;line-height:1.8;color:var(--muted)}
.kimari-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px;font:13px system-ui,sans-serif}.kimari-toolbar label{display:flex;align-items:center;gap:8px;font-weight:700}.kimari-reader{position:sticky;top:69px;z-index:4;border:1px solid rgba(143,38,50,.18);border-radius:22px;background:rgba(255,250,240,.96);box-shadow:0 12px 28px rgba(66,34,28,.12);padding:18px;margin-bottom:18px;backdrop-filter:blur(12px)}.kimari-head{display:flex;justify-content:space-between;align-items:center;gap:10px}.kimari-score{font:900 16px system-ui,sans-serif;color:var(--red)}.kimari-reveal{min-height:74px;display:flex;align-items:center;justify-content:center;gap:3px;font-size:clamp(34px,8vw,66px);font-weight:800;letter-spacing:.12em;color:var(--ink);padding:10px;text-align:center}.kimari-reveal.decided{color:var(--red)}.kimari-cursor{animation:blink 1s steps(1) infinite;color:var(--gold)}@keyframes blink{50%{opacity:.2}}.kimari-hint{text-align:center;font:700 13px/1.6 system-ui,sans-serif;color:var(--muted);min-height:22px}.kimari-actions{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;margin-top:12px}.kimari-actions button{border:1px solid var(--line);background:#fff;padding:9px 13px;border-radius:12px}.karuta-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px}.karuta-card{min-height:122px;border:1px solid rgba(88,53,42,.2);border-radius:16px;background:linear-gradient(145deg,#fff,#f7edde);padding:13px;display:flex;gap:10px;align-items:stretch;text-align:left;color:var(--ink);box-shadow:0 7px 18px rgba(66,34,28,.07);transition:.15s}.karuta-card:hover{transform:translateY(-2px);border-color:rgba(143,38,50,.5)}.fuda-no{writing-mode:vertical-rl;border-right:1px solid var(--line);padding-right:7px;color:var(--red);font:800 10px system-ui,sans-serif;letter-spacing:.08em}.fuda-text{font-size:15px;line-height:1.75;letter-spacing:.05em;align-self:center}.master-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.master-grid .karuta-card{min-height:94px;padding:8px;gap:6px}.master-grid .fuda-no{font-size:8px;padding-right:4px}.master-grid .fuda-text{font-size:11px;line-height:1.45;letter-spacing:0}.kimari-result-note{font:13px/1.7 system-ui,sans-serif;color:var(--muted);margin-top:12px}.kimari-badge{display:inline-block;margin-left:5px;padding:3px 7px;border-radius:999px;background:rgba(143,38,50,.1);color:var(--red);font-weight:800}.difficulty-help{font:12px/1.6 system-ui,sans-serif;color:var(--muted)}
footer{text-align:center;padding:44px 10px 0;font:12px/1.9 system-ui,sans-serif;color:var(--muted)}.footer-brand{color:var(--ink)}.footer-link{border:0;background:none;color:var(--red);text-decoration:underline;padding:4px}.toast{position:fixed;left:50%;bottom:calc(28px + var(--safe-bottom));transform:translate(-50%,30px);background:#281c18;color:#fff;padding:11px 17px;border-radius:999px;font:13px system-ui,sans-serif;opacity:0;pointer-events:none;transition:.2s;z-index:30}.toast.show{opacity:1;transform:translate(-50%,0)}
.not-found{display:grid;place-items:center;align-content:center;min-height:100vh;text-align:center}.not-found a{color:var(--red)}
@media(max-width:850px){.hero{grid-template-columns:1fr}.hero-visual{order:-1}.progress-ring{width:160px}.mode-grid{grid-template-columns:repeat(2,1fr)}.stats-grid{grid-template-columns:repeat(2,1fr)}.master-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:620px){.credit-grid{grid-template-columns:1fr}.karuta-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.master-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.karuta-card{min-height:110px;padding:10px}.fuda-text{font-size:13px}.kimari-reader{top:68px;padding:13px}.kimari-reveal{min-height:62px}}
@media(max-width:520px){header{align-items:flex-start}.header-actions .label{display:none}.hero{border-radius:24px}.mode-grid{grid-template-columns:1fr 1fr;gap:9px}.mode-card{padding:16px;min-height:160px}.stats-grid{gap:8px}.waka-card{grid-template-columns:42px 1fr;padding:23px 18px}.poem-no{padding-right:8px}.game-body{padding:17px}.game-shell{border-radius:20px}.panel{padding:0}.game-shell{min-height:100vh;border-radius:0}.question{font-size:23px}.game-meta{gap:4px}.pill{padding:6px 7px;font-size:11px}.kimari-toolbar{align-items:flex-start}.master-grid .fuda-text{font-size:10px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}