*{box-sizing:border-box;margin:0;padding:0}
:root{--red:#ff6685;--blue:#55ddcf;--gold:#f4ce78;--ink:#f4eddc;--bg:#100f22;--panel:#17162e;--line:#413c63;--dim:#a09ab8;--violet:#a79bff}
html,body{height:100%;background:radial-gradient(ellipse at 50% -20%,#33234d 0%,#17152d 42%,var(--bg) 78%);color:var(--ink);font-family:"Courier New",ui-monospace,monospace}
main{max-width:900px;margin:0 auto;padding:16px;display:flex;flex-direction:column;gap:12px;min-height:100%}
header{display:flex;justify-content:space-between;align-items:flex-end;border-bottom:2px solid var(--gold);padding-bottom:8px;box-shadow:0 1px 0 #a79bff22}
h1{font-size:40px;letter-spacing:-2px;line-height:.9;font-weight:900;text-shadow:0 0 22px #a79bff35}
h1 span{display:block;font-size:20px;letter-spacing:8px;color:var(--violet)}
.menu-btn{padding:6px 12px;font-size:16px;text-align:right;border-width:1px;border-color:var(--line);color:var(--gold);background:#17162e99}
.menu-btn small{display:block;font-size:11px;color:var(--dim);letter-spacing:3px}
.menu-btn:hover{background:var(--gold);border-color:var(--gold);color:var(--bg)}
.goal{display:flex;justify-content:space-between;gap:12px;font-size:15px;letter-spacing:1px;min-height:22px;color:var(--dim)}
.goal b{color:var(--gold)}
#status{text-align:right;white-space:nowrap;color:var(--violet)}
.chapters{display:flex;flex-direction:column;gap:8px;width:min(520px,100%);text-align:left}
.chapters button{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;font-size:16px;text-align:left;background:#17162e;border:1px solid var(--line);color:var(--ink)}
.chapters button small{display:block;font-size:12px;color:var(--dim);letter-spacing:1px;font-weight:400;margin-top:4px}
.chapters button:hover:not(:disabled){background:var(--gold);border-color:var(--gold);color:var(--bg)}
.chapters .done{color:var(--gold)}
.law{max-width:560px;font-size:15px;line-height:1.6;letter-spacing:.5px;color:#d7d0e5}
.law em{color:var(--gold);font-style:normal}
.stage{display:grid;grid-template-columns:1fr 1.4fr;gap:12px;flex:1;min-height:300px}
.vessel-wrap{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:12px 12px 24px 24px;background:linear-gradient(145deg,#211d3a99,#141326aa);box-shadow:inset 0 0 32px #a79bff0b,0 0 24px #08071355;overflow:hidden}
#vessel{flex:1;width:100%;min-height:240px}
#chart{width:100%;height:100%;min-height:240px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(145deg,#17162eee,#121120dd);box-shadow:inset 0 0 28px #08071355}
.ratio{display:flex;justify-content:space-between;align-items:center;padding:6px 10px;border-top:1px solid var(--line);font-size:14px;background:#100f22aa}
.ratio b{font-size:20px;color:var(--gold);text-shadow:0 0 12px #f4ce7844}
.r{color:var(--red)}.b{color:var(--blue)}
.controls{display:grid;grid-template-columns:1fr 1.3fr 1fr;gap:10px}
button{font:inherit;font-weight:900;font-size:18px;letter-spacing:2px;padding:18px 8px;border:1px solid var(--line);border-radius:8px;background:#17162e;color:var(--ink);cursor:pointer;transition:transform .08s,background .15s,box-shadow .15s}
button:active:not(:disabled){transform:translate(1px,2px)}
button:disabled{opacity:.3;cursor:not-allowed}
button i{font-style:normal;display:inline-block;min-width:1.6em;margin-left:6px;background:var(--ink);color:var(--bg);padding:0 4px;border-radius:3px}
.controls button.red{border-color:#a94768;color:var(--red);background:#391b36}
.controls button.red:hover:not(:disabled){background:var(--red);border-color:var(--red);color:var(--bg);box-shadow:0 0 22px #ff668555}
.controls button.blue{border-color:#287c7b;color:var(--blue);background:#123336}
.controls button.blue:hover:not(:disabled){background:var(--blue);border-color:var(--blue);color:var(--bg);box-shadow:0 0 22px #55ddcf55}
.controls button.plain{border-color:var(--line);color:var(--violet);background:#201d3b}
.controls button.plain:hover:not(:disabled){background:var(--violet);border-color:var(--violet);color:var(--bg)}
.controls button.hide{visibility:hidden}
.go{background:linear-gradient(135deg,#ffe5a0,var(--gold));border-color:var(--gold);color:#211931;box-shadow:0 0 18px #f4ce7822}
.go:hover:not(:disabled){background:#fff0c8;border-color:#fff0c8;box-shadow:0 0 25px #f4ce7866}
.msg{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:#0c0a1aeF;backdrop-filter:blur(8px);z-index:10;text-align:center;font-size:20px;letter-spacing:2px;cursor:pointer;flex-direction:column;gap:12px;padding:20px}
.msg h2{font-size:clamp(32px,7vw,48px);letter-spacing:-1px;color:var(--gold);text-shadow:0 0 24px #f4ce7833}
.msg small{color:var(--dim);font-size:14px}
.hidden{display:none}
footer{text-align:center;font-size:12px;letter-spacing:1px}
footer a{color:var(--dim);text-decoration:none}
footer a:hover{color:var(--gold);text-decoration:underline}
@media(max-width:640px){
  .stage{grid-template-columns:1fr;}
  #chart{min-height:160px;height:160px}
  h1{font-size:30px}
  button{font-size:15px;padding:14px 4px}
  .goal{font-size:12px}
}