:root{color-scheme:dark;font-family:Avenir Next,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.5;font-weight:500;--bg-deep: #190f23;--bg-mid: #2a1632;--bg-panel: rgba(38, 19, 45, .74);--bg-panel-strong: rgba(48, 22, 55, .88);--bg-grid: rgba(40, 21, 48, .95);--bg-grid-soft: rgba(53, 26, 59, .92);--ink-strong: #fff7fb;--ink-soft: #e7c5d5;--ink-dim: #ba95aa;--accent: #ff8fb8;--accent-strong: #ff6fa0;--accent-soft: rgba(255, 143, 184, .18);--cyan: #9de8ff;--cyan-soft: rgba(157, 232, 255, .14);--teal: #65e3d8;--teal-soft: rgba(101, 227, 216, .14);--border: rgba(255, 197, 220, .22);--border-strong: rgba(255, 201, 227, .36);--shadow: 0 24px 50px rgba(26, 8, 26, .42);--cell-size: clamp(2.8rem, 6vw, 3.45rem);color:var(--ink-strong);background:radial-gradient(circle at 20% 14%,rgba(255,151,196,.34),transparent 24%),radial-gradient(circle at 78% 18%,rgba(157,232,255,.18),transparent 20%),radial-gradient(circle at 55% 88%,rgba(255,126,169,.24),transparent 28%),linear-gradient(180deg,#1b1021,#28152b 40%,#311631)}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{min-height:100vh;position:relative;overflow-x:hidden}body:before,body:after{content:"";position:fixed;inset:auto;pointer-events:none;z-index:0;filter:blur(0)}body:before{top:-8rem;left:-6rem;width:22rem;height:22rem;border-radius:50%;background:radial-gradient(circle,rgba(255,138,182,.34) 0%,transparent 68%);animation:floatGlow 16s ease-in-out infinite}body:after{right:-6rem;bottom:-8rem;width:28rem;height:28rem;border-radius:50%;background:radial-gradient(circle,rgba(255,176,205,.24) 0%,transparent 72%);animation:floatGlow 18s ease-in-out infinite reverse}button,input,textarea,select{font:inherit}button{cursor:pointer}.app-shell{position:relative;isolation:isolate;min-height:100vh;padding:2.2rem clamp(1rem,4vw,2.75rem) 6rem;color:var(--ink-strong)}.app-shell:before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(circle at 12% 12%,rgba(255,230,239,.05),transparent 18%),linear-gradient(135deg,rgba(255,255,255,.05),transparent 32%),linear-gradient(0deg,#200c212e,#200c212e)}.app-shell:after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;opacity:.82;background:radial-gradient(circle at 14% 22%,rgba(255,255,255,.88) 0 .09rem,transparent .13rem),radial-gradient(circle at 30% 16%,rgba(255,208,227,.78) 0 .08rem,transparent .12rem),radial-gradient(circle at 48% 10%,rgba(255,255,255,.72) 0 .07rem,transparent .11rem),radial-gradient(circle at 64% 24%,rgba(255,218,234,.72) 0 .08rem,transparent .12rem),radial-gradient(circle at 83% 18%,rgba(255,255,255,.84) 0 .09rem,transparent .13rem),radial-gradient(circle at 76% 58%,rgba(255,213,229,.68) 0 .08rem,transparent .12rem),radial-gradient(circle at 24% 70%,rgba(255,255,255,.72) 0 .08rem,transparent .11rem),radial-gradient(circle at 58% 78%,rgba(255,221,235,.76) 0 .08rem,transparent .12rem),radial-gradient(circle at 88% 82%,rgba(255,255,255,.82) 0 .09rem,transparent .13rem);animation:sparkleField 8s ease-in-out infinite}.topbar,.game-layout,.selection-bar,.footer-note{width:min(1200px,100%);margin:0 auto}.topbar{display:flex;align-items:end;justify-content:space-between;gap:1.6rem}.brand-block{max-width:37rem}.eyebrow{margin:0 0 .6rem;font-size:.84rem;letter-spacing:.14em;text-transform:uppercase;color:#ffd4e4}.brand-block h1,.board-header h2,.section-heading h2,.completion-panel h2{margin:0;font-family:Iowan Old Style,Songti SC,"Noto Serif SC",Times New Roman,serif;font-weight:700;letter-spacing:0}.brand-block h1{font-size:clamp(2.7rem,6vw,4.8rem);line-height:.94;color:#fff7fb;text-shadow:0 0 18px rgba(255,148,187,.26),0 0 36px rgba(255,207,225,.12);animation:titleGlow 5.6s ease-in-out infinite}.subtitle{margin:1rem 0 0;color:#f2d0df;font-size:1rem;max-width:31rem}.hero-hearts{display:flex;gap:.75rem;margin-top:1rem}.hero-hearts span{display:inline-flex;align-items:center;justify-content:center;width:2rem;height:2rem;border-radius:999px;color:#fff6fb;font-size:1rem;background:linear-gradient(135deg,#ff92bde6,#ff739ff2);box-shadow:0 10px 24px #ff6fa03d,0 0 18px #ffabc938;animation:heartPulse 2.8s ease-in-out infinite}.hero-hearts span:nth-child(2){transform:translateY(.3rem);background:linear-gradient(135deg,#ffbed2eb,#ff8bb7f5);animation-delay:.5s}.hero-hearts span:nth-child(3){transform:translateY(-.1rem);background:linear-gradient(135deg,#ffa7cce6,#ff84adf2);animation-delay:1s}.topbar-meta{display:flex;flex-wrap:wrap;align-items:center;justify-content:end;gap:.95rem}.difficulty-switch{display:inline-grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:.32rem;border:1px solid rgba(112,164,208,.24);border-radius:999px;background:linear-gradient(180deg,#ffffff0f,#ffffff05),#301535c2;box-shadow:0 16px 34px #200c1d4d,inset 0 1px #ffffff14;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.difficulty-button,.ghost-button,.submit-button{border:0;border-radius:999px;transition:transform .14s ease,background-color .14s ease,color .14s ease,box-shadow .14s ease,opacity .14s ease,border-color .14s ease}.difficulty-button{padding:.72rem 1rem;color:#f0cade;background:transparent;min-width:4.85rem}.difficulty-button.active{background:linear-gradient(135deg,#ff7db4f2,#ffa2cbeb);color:#fff9f7;box-shadow:0 10px 24px #ff6fa047}.progress-chip{display:inline-flex;align-items:center;justify-content:center;min-width:5.7rem;padding:.95rem 1.25rem;border-radius:1.05rem;border:1px solid rgba(255,200,221,.28);background:linear-gradient(180deg,#582453eb,#391738f5),#311431eb;color:#fef5f6;font-size:1.45rem;font-weight:800;box-shadow:var(--shadow),0 0 24px #ff9bc01f;animation:chipTwinkle 4.8s ease-in-out infinite}.game-layout{display:grid;grid-template-columns:minmax(0,1.72fr) minmax(290px,.94fr);gap:1.55rem;margin-top:2.15rem;align-items:start}.board-section,.info-section,.selection-bar,.completion-panel{border:1px solid var(--border);background:linear-gradient(180deg,rgba(255,255,255,.04),transparent 20%),var(--bg-panel);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.board-section,.info-section{border-radius:1.35rem;overflow:hidden}.board-section{position:relative;display:flex;flex-direction:column;min-height:0}.board-section:before,.info-section:before,.selection-bar:before,.completion-panel:before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(135deg,rgba(255,255,255,.06),transparent 32%)}.board-header{display:flex;align-items:start;justify-content:space-between;gap:1rem;padding:1.25rem 1.25rem .9rem}.board-header p,.section-note,.footer-note{margin:.42rem 0 0;color:var(--ink-soft)}.board-actions{display:flex;flex-wrap:wrap;gap:.65rem;justify-content:end}.ghost-button{border:1px solid rgba(255,195,218,.18);padding:.78rem 1rem;background:linear-gradient(180deg,rgba(255,255,255,.04),transparent),#3b1b3ed1;color:var(--ink-strong);box-shadow:inset 0 1px #ffffff0d}.submit-button{padding:.98rem 1.45rem;background:linear-gradient(135deg,#ff7db4,#ffb0d0);color:#fffaf8;font-weight:700;min-width:6rem;box-shadow:0 16px 32px #ff78b140,0 0 24px #ff78b12e}.submit-button:disabled{opacity:.44;cursor:not-allowed;box-shadow:none}.ghost-button:hover,.submit-button:hover:not(:disabled),.difficulty-button:hover,.board-cell:hover:not(:disabled){transform:translateY(-1px)}.ghost-button:hover,.difficulty-button:hover:not(.active){box-shadow:0 0 0 1px #77e5ff24}.board-scroll{overflow:auto;padding:0 1.25rem 1.25rem}.board-grid{display:grid;gap:.5rem;width:max-content;min-width:100%;padding:.4rem 0 .18rem}.board-cell{position:relative;width:var(--cell-size);height:var(--cell-size);overflow:hidden;border:1px solid rgba(255,196,220,.22);border-radius:.95rem;background:linear-gradient(180deg,rgba(255,255,255,.05),transparent 32%),linear-gradient(180deg,#49214af5,#2e1431f5);color:#fcf6f2;display:flex;align-items:center;justify-content:center;padding:0;box-shadow:inset 0 1px #ffffff0d,0 10px 20px #1c0b1d38}.board-cell:before{content:"";position:absolute;inset:0;opacity:0;transition:opacity .14s ease;background:radial-gradient(circle at 25% 18%,rgba(255,188,214,.24),transparent 52%)}.board-cell:hover:not(:disabled){border-color:#ffbed975;box-shadow:0 0 0 1px #ffbed924,0 12px 26px #1f0b1f3d,0 0 18px #ffa3c81f}.board-cell:hover:not(:disabled):before{opacity:1}.board-cell.selected{border-color:#ffadcbad;background:linear-gradient(180deg,rgba(255,255,255,.18),transparent 32%),linear-gradient(180deg,#722c5af5,#4f1d3ef5);box-shadow:0 0 0 1px #ff99bd33,0 16px 28px #1f0b1f47,0 0 22px #ff99bd47;animation:selectedGlow 1.9s ease-in-out infinite}.board-cell.cleared{border-style:dashed;border-color:#6c88a529;background:#0c152257;box-shadow:none;cursor:default}.cell-char{position:relative;z-index:1;display:block;font-size:clamp(1.22rem,3vw,1.52rem);font-weight:700;line-height:1;text-shadow:0 0 12px rgba(255,255,255,.08);pointer-events:none}.cell-order{position:absolute;top:.18rem;right:.18rem;z-index:2;min-width:.96rem;height:.96rem;border-radius:999px;background:linear-gradient(135deg,#ff8eb9,#ffc3d8);color:#fffaf7;display:inline-flex;align-items:center;justify-content:center;padding:0 .18rem;font-size:.64rem;font-weight:700;box-shadow:0 0 16px #ff8fb847;pointer-events:none}.info-section{position:relative;display:grid;grid-template-rows:auto auto;gap:0}.target-section,.rules-section{padding:1.25rem}.rules-section{border-top:1px solid rgba(131,175,211,.14)}.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:1rem}.target-list,.rule-list{margin:1rem 0 0;padding:0;list-style:none}.target-list{display:grid;gap:.7rem}.target-item{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:.75rem;padding:.82rem .95rem;border:1px solid rgba(255,194,218,.16);border-radius:.9rem;background:linear-gradient(180deg,rgba(255,255,255,.04),transparent 30%),#421d43b8}.target-item.matched{background:linear-gradient(180deg,rgba(255,255,255,.06),transparent 30%),#2d1f34d6;border-color:#65e3d838;box-shadow:inset 0 0 0 1px #65e3d814}.target-name{display:block;min-width:0;font-size:1rem;font-weight:700;line-height:1.25;overflow-wrap:anywhere}.target-item.matched .target-name{text-decoration:line-through;color:var(--teal)}.target-meta{justify-self:end;color:var(--ink-dim);font-size:.82rem;white-space:nowrap}.rule-list{display:grid;gap:.72rem}.rule-list li{color:var(--ink-soft)}.selection-bar{position:sticky;bottom:1rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-top:1.3rem;border-radius:1.2rem;padding:1rem 1.15rem}.selection-copy{min-width:0}.selection-label{margin:0;color:#ffd4e4;font-size:.85rem;letter-spacing:.12em;text-transform:uppercase}.selection-value{margin:.26rem 0 0;font-size:clamp(1rem,2.4vw,1.35rem);font-weight:700;color:#fff7f4;overflow-wrap:anywhere}.notice-banner{position:fixed;left:50%;bottom:6.7rem;transform:translate(-50%);z-index:20;max-width:min(92vw,28rem);border-radius:999px;padding:.88rem 1.28rem;color:#fff9f7;box-shadow:0 18px 34px #19091a57,0 0 22px #ff95be29;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.notice-banner.info{background:#4c2655eb}.notice-banner.error{background:#8c274af0}.notice-banner.success{background:#114a4ceb}.completion-overlay{position:fixed;inset:0;background:radial-gradient(circle at 50% 24%,rgba(255,172,203,.18),transparent 26%),#1b0b1dbd;display:grid;place-items:center;padding:1rem;z-index:30;animation:completionFadeIn .26s ease-out both}.completion-overlay-heart{background:radial-gradient(circle at 50% 34%,rgba(255,191,222,.18),transparent 24%),#230d2294}.completion-heart-scene{position:relative;width:min(44vw,18rem);aspect-ratio:1 / 1;display:grid;place-items:center;animation:completionHeartScene 1.7s ease-in-out both}.completion-heart-glow{position:absolute;inset:14%;border-radius:50%;background:radial-gradient(circle,#ffc9e2e6,#ff9eca75 36%,#ff9eca00 76%);transform:scale(1.25);filter:blur(.35rem);animation:completionHeartGlow 1.7s ease-in-out both}.completion-heart{position:relative;display:grid;place-items:center;width:clamp(8.4rem,27vw,13rem);height:clamp(8.4rem,27vw,13rem)}.completion-heart:before{content:"♥";font-size:clamp(8.8rem,29vw,13.8rem);line-height:1;background:linear-gradient(180deg,#ffe0ee,#ff9fc9 42%,#ff6eab 78%,#ffd3e8);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 24px rgba(255,164,208,.3)) drop-shadow(0 0 56px rgba(255,164,208,.14))}.completion-heart-spark{position:absolute;color:#ffe2ef;text-shadow:0 0 12px rgba(255,221,236,.46),0 0 28px rgba(255,193,222,.22);animation:completionSparkDrift 1.7s ease-out both}.spark-left{top:20%;left:9%;font-size:1.3rem}.spark-right{top:18%;right:10%;font-size:1.7rem;animation-delay:.12s}.spark-bottom{right:15%;bottom:16%;font-size:1.15rem;animation-delay:.22s}.completion-panel{position:relative;width:min(29rem,100%);border-radius:1.5rem;padding:1.65rem;text-align:center;background:linear-gradient(180deg,rgba(255,255,255,.07),transparent 24%),#3d1b3fe6;box-shadow:0 24px 56px #1608186b,0 0 24px #ffb6d21f;overflow:hidden;animation:completionPanelPop .42s cubic-bezier(.2,.9,.24,1.12) both}.completion-burst{display:flex;justify-content:center;gap:.7rem;margin-bottom:.8rem;color:#ffd6e6;text-shadow:0 0 14px rgba(255,182,214,.42),0 0 28px rgba(255,182,214,.18)}.completion-burst span{display:inline-flex;align-items:center;justify-content:center;min-width:1.7rem;font-size:1.15rem;animation:completionBurstFloat 2.8s ease-in-out infinite}.completion-burst span:nth-child(2){font-size:.92rem;animation-delay:.35s}.completion-burst span:nth-child(3){animation-delay:.7s}.completion-panel p{color:var(--ink-soft)}.completion-message{margin:.9rem auto .45rem;max-width:18rem;font-size:clamp(1.2rem,3vw,1.55rem);line-height:1.5;font-weight:700;color:#fff7fb;text-shadow:0 0 18px rgba(255,166,201,.26),0 0 34px rgba(255,196,220,.12);animation:completionMessageBloom .62s .12s ease-out both}.gift-link{display:inline-flex;align-items:center;justify-content:center;min-height:3.05rem;margin-top:.75rem;border:1px solid rgba(255,205,229,.36);border-radius:999px;padding:.82rem 1.25rem;color:#fffaf8;font-weight:800;text-decoration:none;background:linear-gradient(135deg,#ff80b5f0,#ffbed9eb);box-shadow:0 16px 32px #ff76b03d,0 0 26px #ffb1d22e;transition:transform .14s ease,box-shadow .14s ease}.gift-link:hover{transform:translateY(-1px);box-shadow:0 18px 36px #ff76b047,0 0 32px #ffcae13d}.completion-actions{display:flex;justify-content:center;gap:.8rem;margin-top:1.25rem}.footer-note{margin-top:1.05rem;text-align:center;font-size:.92rem;color:var(--ink-dim)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes floatGlow{0%,to{transform:translateZ(0) scale(1)}50%{transform:translate3d(0,1.1rem,0) scale(1.03)}}@keyframes sparkleField{0%,to{opacity:.55;transform:translateZ(0);filter:drop-shadow(0 0 0 rgba(255,255,255,0))}25%{opacity:.88;transform:translate3d(.1rem,-.12rem,0);filter:drop-shadow(0 0 .18rem rgba(255,233,244,.22))}55%{opacity:.62;transform:translate3d(-.08rem,.08rem,0);filter:drop-shadow(0 0 .1rem rgba(255,233,244,.1))}78%{opacity:.92;transform:translate3d(.06rem,-.05rem,0);filter:drop-shadow(0 0 .24rem rgba(255,233,244,.26))}}@keyframes completionFadeIn{0%{opacity:0}to{opacity:1}}@keyframes completionHeartScene{0%{opacity:0;transform:scale(.5)}25%{opacity:1;transform:scale(1.08)}55%{opacity:1;transform:scale(.98)}to{opacity:0;transform:scale(1.3)}}@keyframes completionHeartGlow{0%{opacity:0;transform:scale(.7)}28%{opacity:1;transform:scale(1.18)}to{opacity:0;transform:scale(1.55)}}@keyframes completionPanelPop{0%{opacity:0;transform:translate3d(0,1.3rem,0) scale(.9)}65%{opacity:1;transform:translate3d(0,-.16rem,0) scale(1.03)}to{opacity:1;transform:translateZ(0) scale(1)}}@keyframes completionSparkDrift{0%{opacity:0;transform:translate3d(0,.5rem,0) scale(.7)}28%{opacity:1;transform:translate3d(0,-.18rem,0) scale(1.06)}to{opacity:0;transform:translate3d(0,-1rem,0) scale(1.18)}}@keyframes completionMessageBloom{0%{opacity:0;transform:scale(.86);letter-spacing:.04em;filter:blur(.22rem)}65%{opacity:1;transform:scale(1.04);letter-spacing:0;filter:blur(0)}to{opacity:1;transform:scale(1);letter-spacing:0;filter:blur(0)}}@keyframes completionBurstFloat{0%,to{transform:translateZ(0) scale(1);opacity:.86}50%{transform:translate3d(0,-.36rem,0) scale(1.08);opacity:1}}@keyframes titleGlow{0%,to{text-shadow:0 0 18px rgba(255,148,187,.22),0 0 36px rgba(255,207,225,.1)}50%{text-shadow:0 0 22px rgba(255,170,200,.34),0 0 46px rgba(255,219,233,.18)}}@keyframes heartPulse{0%,to{transform:scale(1);box-shadow:0 10px 24px #ff6fa03d,0 0 18px #ffabc938}45%{transform:scale(1.08);box-shadow:0 14px 28px #ff7eaa47,0 0 22px #ffc4d847}}@keyframes chipTwinkle{0%,to{box-shadow:var(--shadow),0 0 24px #ff9bc01f}50%{box-shadow:var(--shadow),0 0 32px #ffb0cd38,0 0 48px #ffb0cd1f}}@keyframes selectedGlow{0%,to{box-shadow:0 0 0 1px #ff99bd33,0 16px 28px #1f0b1f47,0 0 22px #ff99bd3d}50%{box-shadow:0 0 0 1px #ffb7d13d,0 16px 28px #1f0b1f47,0 0 28px #ffb7d161}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}@media(max-width:980px){.topbar,.board-header,.selection-bar{align-items:stretch}.topbar,.game-layout,.board-header,.selection-bar,.completion-actions{grid-template-columns:1fr;flex-direction:column}.topbar-meta,.board-actions{justify-content:start}.game-layout{grid-template-columns:1fr}.selection-bar{bottom:.75rem}.submit-button,.ghost-button{width:100%}}@media(max-width:680px){:root{--cell-size: 2.7rem}.app-shell{padding:1rem .9rem 6.5rem}.brand-block h1{font-size:clamp(2.25rem,12vw,3.3rem)}.difficulty-switch{width:100%}.difficulty-button{padding-inline:.7rem}.progress-chip{width:100%}.board-scroll{padding-inline:.9rem}.target-section,.rules-section,.board-header{padding-inline:.95rem}.selection-bar{padding:.92rem}}