.pc-computer-page{--iph-board:590px;min-width:0;background:#fff;color:var(--ink-soft)}
.pc-computer-page [hidden]{display:none!important}
.pc-computer-page button,.pc-computer-page input,.pc-computer-page a{font-family:inherit}

.pc-computer-hero{padding:24px 0 20px;border-bottom:1px solid var(--line);background:#fff;text-align:left}
.pc-computer-hero .crumbs{justify-content:flex-start}
.pc-computer-hero h1{max-width:22ch;margin:9px 0 8px;font-size:clamp(2rem,4.4vw,3.15rem);line-height:1.06;letter-spacing:-.035em;color:var(--ink)}
.pc-computer-hero .lede{max-width:76ch;margin:0;font-size:clamp(.98rem,1.7vw,1.12rem);line-height:1.58;color:var(--ink-soft)}
.pc-computer-hero .iph-hero-facts{justify-content:flex-start;margin-top:13px}

.pc-computer-page .iph-game-wrap{max-width:1280px;padding-top:18px;padding-bottom:46px}
.pc-computer-page .iph-game-shell{grid-template-columns:minmax(0,1fr) minmax(360px,420px);gap:22px}
.pc-computer-page .iph-board-card{box-shadow:0 14px 40px -30px rgba(31,61,100,.5)}
.pc-computer-page .iph-setup{position:sticky;top:82px;box-shadow:0 14px 40px -30px rgba(31,61,100,.5)}
.pc-computer-page .iph-setup-intro{margin-bottom:10px}
.pc-computer-page .iph-panel{margin-top:0}
.pc-computer-page .iph-field{margin-top:0}
.pc-computer-page .iph-step-label{margin-top:16px}
.pc-computer-page .iph-strength-box{margin-top:13px}
.pc-computer-page .iph-start{grid-template-columns:minmax(0,1fr) auto}
.pc-computer-page .iph-board-lock a{display:inline-block;margin-top:7px;font-weight:800;color:var(--blue-deep)}
.pc-computer-page .iph-board-lock a:hover{text-decoration:underline}
.pc-computer-page .iph-live-panel .cd-play-controls button{min-height:44px}
.pc-computer-page .iph-live-panel .cd-play-status{outline:none}
.pc-computer-page .iph-strength-note{margin-bottom:0}
.pc-computer-page .cd-play-who img.iph-stockfish-avatar{width:84px;height:84px;flex:none;border:1px solid #bfd3e9;border-radius:16px;background:var(--mist);object-fit:cover;padding:0;box-shadow:0 8px 20px -14px rgba(47,90,153,.7)}

.pc-section{max-width:1120px;margin:0 auto;padding:44px 24px 0}
.pc-section-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;border-bottom:2px solid var(--line);padding-bottom:9px;margin-bottom:18px}
.pc-section-head h2{margin:0;font-size:clamp(1.4rem,2.3vw,1.75rem);font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.pc-section-head p{max-width:70ch;margin:0;font-size:.88rem;line-height:1.5;color:var(--ink-soft)}
.pc-section-intro{max-width:78ch;margin:0 0 18px;font-size:.94rem;line-height:1.65}

.pc-table-wrap{border:1px solid var(--line);border-radius:14px;overflow:auto;background:#fff;box-shadow:var(--shadow-sm)}
.pc-table{width:100%;border-collapse:collapse;font-size:.86rem}
.pc-table th,.pc-table td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.pc-table thead th{background:var(--blue);color:#fff;font-size:.68rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase}
.pc-table tbody tr:nth-child(even){background:#f6f9fc}
.pc-table tbody tr:last-child td{border-bottom:0}
.pc-table td:first-child{font-weight:800;color:var(--ink)}
.pc-table strong{color:var(--blue-deep);font-variant-numeric:tabular-nums}
.pc-table button{min-height:40px;border:1px solid var(--blue);border-radius:8px;background:#fff;color:var(--blue-deep);padding:7px 11px;font-size:.76rem;font-weight:800;cursor:pointer}
.pc-table button:hover{background:var(--blue);color:#fff}

.pc-use-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}
.pc-use-card{min-width:0;border:1px solid var(--line);border-radius:13px;background:#fff;padding:16px 17px;box-shadow:var(--shadow-sm)}
.pc-use-card .n{display:grid;place-items:center;width:29px;height:29px;margin-bottom:10px;border-radius:50%;background:var(--blue);color:#fff;font-size:.75rem;font-weight:800}
.pc-use-card h3{margin:0 0 6px;font-size:1.02rem;font-weight:800;color:var(--ink)}
.pc-use-card p{margin:0;font-size:.84rem;line-height:1.55;color:var(--ink-soft)}

.pc-starting-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.pc-starting-card{display:flex;flex-direction:column;min-width:0;border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:0 0 13px 13px;background:#fff;padding:15px;box-shadow:var(--shadow-sm)}
.pc-starting-card b{font-size:1rem;color:var(--ink)}
.pc-starting-card strong{margin:4px 0 7px;color:var(--blue-deep);font-size:.84rem}
.pc-starting-card p{margin:0 0 13px;font-size:.8rem;line-height:1.5}
.pc-starting-card button{margin-top:auto;min-height:42px;border:1px solid var(--blue);border-radius:8px;background:#fff;color:var(--blue-deep);font-size:.76rem;font-weight:800;cursor:pointer}
.pc-starting-card button:hover{background:var(--blue);color:#fff}

.pc-honest{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:18px;align-items:start}
.pc-honest-copy{border-left:4px solid var(--blue);border-radius:0 12px 12px 0;background:#f7fafc;padding:17px 18px}
.pc-honest-copy h3{margin:0 0 7px;font-size:1.1rem;color:var(--ink)}
.pc-honest-copy p{margin:0;font-size:.86rem;line-height:1.62}
.pc-checks{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.pc-checks li{position:relative;padding:11px 14px 11px 39px;border-bottom:1px solid var(--line);font-size:.84rem;line-height:1.45}
.pc-checks li:last-child{border-bottom:0}
.pc-checks li::before{content:"✓";position:absolute;left:15px;top:10px;color:var(--green);font-weight:800}
.pc-checks b{color:var(--ink)}

.pc-session{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;counter-reset:session}
.pc-session article{position:relative;border:1px solid var(--line);border-radius:12px;background:#fff;padding:16px 16px 16px 49px;box-shadow:var(--shadow-sm);counter-increment:session}
.pc-session article::before{content:counter(session);position:absolute;left:15px;top:15px;width:25px;height:25px;display:grid;place-items:center;border-radius:50%;background:var(--mist);color:var(--blue-deep);font-size:.72rem;font-weight:800}
.pc-session h3{margin:0 0 5px;font-size:.96rem;color:var(--ink)}
.pc-session p{margin:0;font-size:.81rem;line-height:1.52}

.pc-faq{border-top:1px solid var(--line)}
.pc-faq details{border-bottom:1px solid var(--line)}
.pc-faq summary{position:relative;list-style:none;cursor:pointer;min-height:50px;padding:14px 40px 14px 0;font-weight:800;color:var(--ink)}
.pc-faq summary::-webkit-details-marker{display:none}
.pc-faq summary::after{content:"+";position:absolute;right:8px;top:10px;font-size:1.35rem;color:var(--blue)}
.pc-faq details[open] summary::after{content:"−"}
.pc-faq details p{max-width:78ch;margin:0;padding:0 40px 16px 0;font-size:.9rem;line-height:1.65;color:var(--ink-soft)}

.pc-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.pc-link{display:block;min-width:0;border:1px solid var(--line);border-radius:12px;background:#fff;padding:15px 16px;color:var(--ink-soft);box-shadow:var(--shadow-sm);transition:border-color .14s,box-shadow .14s,transform .14s}
.pc-link:hover{border-color:var(--blue);box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none}
.pc-link .up{display:block;margin-bottom:4px;font-size:.65rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--blue-deep)}
.pc-link b{display:block;margin-bottom:4px;color:var(--ink);font-size:.96rem}
.pc-link span{display:block;font-size:.8rem;line-height:1.45}
.pc-tail{margin-top:44px;padding:0 0 38px;border-top:1px solid var(--line)}

@media(max-width:1040px){
  .pc-computer-page .iph-game-shell{grid-template-columns:minmax(0,1fr) minmax(330px,380px)}
  .pc-computer-page{--iph-board:550px}
}
@media(max-width:980px){
  .pc-computer-page .iph-game-shell{grid-template-columns:minmax(0,1fr)}
  .pc-computer-page .iph-setup{position:static}
  .pc-starting-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:760px){
  .pc-use-grid,.pc-session,.pc-links{grid-template-columns:1fr}
  .pc-honest{grid-template-columns:1fr}
}
@media(max-width:680px){
  .pc-computer-hero{padding:20px 0 17px}
  .pc-computer-hero .wrap,.pc-section{padding-left:16px;padding-right:16px}
  .pc-computer-page .iph-game-wrap{padding-top:12px}
  .pc-section{padding-top:36px}
  .pc-table th,.pc-table td{padding:10px 11px}
}
@media(max-width:520px){
  .pc-computer-hero h1{font-size:2rem}
  .pc-computer-page .iph-board-card{border-left:0;border-right:0}
  .pc-starting-grid{grid-template-columns:1fr}
  .pc-computer-page .iph-level-group{grid-template-columns:repeat(4,minmax(0,1fr))}
  .pc-computer-page .iph-start{grid-template-columns:1fr}
  .pc-table-wrap{border-radius:10px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .pc-link{transition:none}
  .pc-link:hover{transform:none}
}