*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body)}.home{max-width:560px;margin:0 auto;padding:64px 16px 80px;display:flex;flex-direction:column;align-items:center;gap:48px;text-align:center}.welcome{display:flex;flex-direction:column;gap:12px}.hello{font-family:var(--font-hand);font-size:30px;color:var(--accent);margin:0}.welcome h1{font-family:var(--font-heading);font-weight:500;font-size:clamp(38px,8vw,58px);line-height:1.1;margin:0}.intro,.how{color:var(--text-soft);line-height:1.7;margin:0}.intro{font-size:18px}.game{width:100%;display:flex;flex-direction:column;align-items:center;gap:14px;background:var(--bg-card);border-radius:24px;padding:28px 20px;box-shadow:0 1px #cdd8cb}.game h2{font-family:var(--font-heading);font-weight:500;font-size:26px;margin:0}.how{font-size:14px;max-width:420px}.game-panel{width:100%;display:flex;flex-direction:column;align-items:center;gap:14px}.game-panel[hidden]{display:none}.board{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);width:min(100%,420px);aspect-ratio:1;border-radius:12px;overflow:hidden;border:6px solid var(--placeholder-bg)}.square{position:relative;min-width:0;min-height:0;border:0;padding:0;margin:0;display:grid;place-items:center;font:inherit}.square.light{background:var(--bg)}.square.dark{background:var(--placeholder-text);background:color-mix(in srgb,var(--text-faint) 55%,var(--bg))}.square.movable,.square.target{cursor:pointer}.square.selected{box-shadow:inset 0 0 0 3px var(--text)}.square.last{background-image:linear-gradient(color-mix(in srgb,var(--accent) 22%,transparent),color-mix(in srgb,var(--accent) 22%,transparent))}.square.target:after{content:"";position:absolute;inset:36%;border-radius:50%;background:var(--accent);opacity:.55}.square.target.capture:after{inset:6%;background:transparent;border:3px solid var(--accent);opacity:.8}.square:focus-visible{outline:3px solid var(--text);outline-offset:-3px}.piece{position:relative;width:74%;aspect-ratio:1;border-radius:50%;box-shadow:inset 0 -3px #0003,0 2px 3px #0000002e;pointer-events:none}.piece.you{background:var(--accent)}.piece.cpu{background:var(--text)}.piece.king:after{content:"♔";position:absolute;inset:0;display:grid;place-items:center;color:var(--accent-ink);font-size:clamp(14px,4.5vw,24px);line-height:1}.chess-piece{position:relative;font-size:clamp(24px,8vw,40px);line-height:1;pointer-events:none}.chess-piece.w{color:var(--accent);text-shadow:0 0 2px var(--accent-ink),0 1px 1px rgba(0,0,0,.25)}.chess-piece.b{color:var(--text);text-shadow:0 0 2px var(--bg-card)}.game-tabs{display:inline-flex;gap:6px;background:var(--bg);padding:4px;border-radius:999px;border:1px solid var(--placeholder-bg)}.game-tab{border:0;background:transparent;color:var(--text-soft);font:inherit;font-size:14px;font-weight:600;padding:6px 16px;border-radius:999px;cursor:pointer;transition:background .15s ease,color .15s ease}.game-tab:hover{color:var(--text)}.game-tab.active{background:var(--accent);color:var(--accent-ink)}.c4-board{display:grid;grid-template-columns:repeat(7,1fr);grid-template-rows:repeat(6,1fr);width:min(100%,420px);aspect-ratio:7 / 6;border-radius:14px;padding:10px;gap:8px;background:color-mix(in srgb,var(--text-faint) 45%,var(--bg));border:6px solid var(--placeholder-bg)}.c4-cell{position:relative;border-radius:50%;border:0;padding:0;margin:0;background:var(--bg);box-shadow:inset 0 2px 4px #00000038;cursor:pointer;display:grid;place-items:center;transition:background .15s ease}.c4-cell:disabled{cursor:default}.c4-cell.col-hover:not(.filled){background:color-mix(in srgb,var(--accent) 30%,var(--bg))}.c4-cell:focus-visible{outline:3px solid var(--text);outline-offset:2px}.c4-piece{width:100%;height:100%;border-radius:50%;box-shadow:inset 0 -3px #00000040,0 2px 4px #0000002e;pointer-events:none;display:block}.c4-cell.latest .c4-piece{animation:dropIn .22s cubic-bezier(.2,.7,.3,1)}.c4-piece.you{background:var(--accent)}.c4-piece.cpu{background:var(--text)}.c4-cell.winning .c4-piece{box-shadow:0 0 0 3px #ffd166,inset 0 -3px #00000040;animation:c4Pulse 1.1s infinite alternate ease-in-out}@keyframes dropIn{0%{transform:translateY(-40px);opacity:.6}to{transform:translateY(0);opacity:1}}@keyframes c4Pulse{0%{transform:scale(1)}to{transform:scale(1.08)}}.game-bar{width:min(100%,420px);display:flex;justify-content:space-between;align-items:center;gap:12px}.status{margin:0;font-size:14px;text-align:left;color:var(--text-soft)}.reset{border:1px solid var(--accent);background:transparent;color:var(--accent);border-radius:999px;padding:8px 18px;font:inherit;font-size:14px;font-weight:600;cursor:pointer;flex-shrink:0}.reset:hover{background:var(--accent);color:var(--accent-ink)}.portfolio-link{display:inline-block;background:var(--accent);color:var(--accent-ink);border-radius:999px;padding:16px 34px;font-size:16px;font-weight:600;text-decoration:none}.portfolio-link:hover{background:var(--accent-hover)}