.knowledge{min-width:0;color:var(--ink)}.knowledge[hidden]{display:none}.knowledge-hero{position:relative;overflow:hidden;padding:clamp(22px,4vw,44px);border:1px solid #62543a;border-top:3px solid var(--gold);background:radial-gradient(ellipse at 100% 0,#28524f66,transparent 65%),linear-gradient(135deg,#152e38,#0b1d29);border-radius:12px}.knowledge-hero:after{content:"";position:absolute;right:-20px;bottom:-50px;width:125px;height:230px;border-left:14px solid #e8bd7010;border-right:30px solid #e8bd7010;transform:rotate(25deg);pointer-events:none}.knowledge-hero h2{font-size:clamp(1.65rem,3.4vw,2.65rem);line-height:1.18;max-width:680px;margin:16px 0 20px;letter-spacing:-.025em}.knowledge-intro{max-width:680px;line-height:1.75;color:#c6d5d9;margin:0}.knowledge-status{font-size:.9rem;color:var(--gold);margin:24px 0 0;padding-top:16px;border-top:1px solid #e8bd7030}.knowledge-jumps{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 32px}.knowledge-jumps button{font-size:.9rem;border-radius:6px;white-space:normal;text-align:left}.knowledge-section{margin:30px 0}.knowledge-section>h2{font-size:1.25rem;padding-bottom:14px;border-bottom:1px solid var(--line);scroll-margin-top:20px}.knowledge-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-items:start}.knowledge-card{min-width:0;background:linear-gradient(140deg,#142b36,#10212b);border:1px solid #304956;border-radius:9px;overflow:hidden}.knowledge-card>summary{position:relative;display:flex;align-items:flex-start;gap:14px;padding:20px;list-style:none;cursor:pointer;min-height:140px}.knowledge-card>summary::-webkit-details-marker{display:none}.knowledge-card>summary:focus-visible{outline:3px solid var(--teal);outline-offset:-4px}.knowledge-card>summary:hover{background:#24414d55}.knowledge-icon{width:44px;height:44px;flex:0 0 44px;display:grid;place-items:center;background:#e8bd7010;border:1px solid #e8bd7030;border-radius:9px;color:var(--gold)}.knowledge-icon svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.45;stroke-linejoin:round;stroke-linecap:round}.knowledge-card-copy{display:flex;flex-direction:column;min-width:0;gap:8px}.knowledge-card-title{font-size:1.08rem;font-weight:700;color:#f2f3eb;line-height:1.35}.knowledge-card-desc{color:var(--muted);font-size:.9rem;line-height:1.5}.knowledge-badge{color:var(--gold);font-size:.75rem;letter-spacing:.025em;margin-top:4px}.knowledge-plus{margin-left:auto;color:var(--gold);font-size:1.2rem;line-height:1.1}.knowledge-card[open]>.knowledge-plus{transform:rotate(45deg)}.knowledge-card[open]{border-color:#8e7952}.knowledge-card[open] summary .knowledge-plus{transform:rotate(45deg)}.knowledge-preview{border-top:1px solid var(--line);padding:18px 20px;color:#b9ccd2;line-height:1.65;font-size:.95rem}.knowledge-preview h3{font-size:1rem;color:var(--gold);margin:0}.knowledge-preview ul{padding-left:20px}.knowledge-preview li{margin:10px 0}.knowledge-footer{padding:20px 0;color:var(--muted);border-top:1px solid var(--line);font-size:.9rem}.knowledge-featured .knowledge-card{border-top:2px solid #a58b56}.knowledge-art{width:100%;height:100%;object-fit:contain;border-radius:8px}.knowledge-featured .knowledge-icon{width:60px;height:60px;flex-basis:60px}.knowledge-featured .knowledge-icon svg{width:34px;height:34px}@media(min-width:1250px){.knowledge-featured{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:650px){.knowledge-grid{grid-template-columns:1fr}.knowledge-card>summary{min-height:112px;padding:17px}.knowledge-featured .knowledge-icon{width:52px;height:52px;flex-basis:52px}.knowledge-hero{padding:23px}.knowledge-jumps{gap:7px}.knowledge-jumps button{flex:1 1 130px;font-size:.82rem}.knowledge-section{margin:26px 0}}@media(prefers-reduced-motion:reduce){.knowledge *{scroll-behavior:auto;transition:none}}

/* Tutorial links: one shared Mustang treatment for current and future guides. */
.knowledge-preview a.ship-link,.knowledge-views button{display:inline-flex;align-items:center;justify-content:center;gap:.65rem;box-sizing:border-box;max-width:100%;min-height:46px;padding:12px 20px;border:1px solid #d3b773;border-radius:9px;background:linear-gradient(135deg,#403924,#182d34);box-shadow:inset 0 1px 0 #f8df9a22,0 3px 10px #0003;color:#f2d997;font:inherit;font-weight:700;text-decoration:none;white-space:normal;overflow-wrap:anywhere;cursor:pointer;text-align:center;line-height:1.45}
.knowledge-preview a.ship-link:hover,.knowledge-views button:hover{border-color:#f5db97;background:linear-gradient(135deg,#5a4b2d,#203d44);color:#fff0c7}
.knowledge-preview a.ship-link:focus-visible,.knowledge-views button:focus-visible{outline:3px solid #8ed9db;outline-offset:4px}
.knowledge-views{margin-top:28px;padding:20px;border:1px solid #36525e;border-top:2px solid #c4a665;border-radius:10px;background:#0b222e;color:#dce5e8;line-height:1.6}
.knowledge-views p{margin:0 0 10px}.knowledge-views small{display:block;color:#aebfc5;margin-bottom:14px}.knowledge-views button{font-size:.9rem}.knowledge-viewers{margin-top:14px;max-height:320px;overflow:auto}.knowledge-viewers ul{list-style:none;padding:0;margin:0}.knowledge-viewers li{display:flex;justify-content:space-between;gap:20px;padding:9px 2px;border-bottom:1px solid #36525e;overflow-wrap:anywhere}.knowledge-viewers li span:first-child{min-width:0}.knowledge-viewers li span:last-child{flex-shrink:0;color:#e9cf92}

.knowledge-comments{margin:24px 0;padding:clamp(18px,3vw,28px);background:linear-gradient(145deg,#102b38,#091e29);border:1px solid #52604e;border-top:3px solid #d3b773;border-radius:12px;color:#dce5e8;line-height:1.65;min-width:0}
.knowledge-comments h2{color:#91dadc;font-size:1.5rem;margin:0 0 10px}.knowledge-comments-intro{color:#bacdd2;margin-bottom:22px}.knowledge-comment-form{margin:14px 0 20px;border:1px solid #766845;border-radius:9px;background:#0b222e;overflow:hidden}
.knowledge-comment-form>summary,.knowledge-replies>summary{cursor:pointer;color:#ead296;font-weight:700;padding:12px 16px;min-height:44px;box-sizing:border-box}.knowledge-comment-form>summary:hover,.knowledge-replies>summary:hover{background:#e9c77712}.knowledge-comment-form form{padding:0 16px 14px}.knowledge-comment-form label{display:block;color:#d7e7e9;font-weight:600;margin-top:12px}.knowledge-comment-form textarea{display:block;box-sizing:border-box;width:100%;max-width:100%;min-height:115px;resize:vertical;margin:8px 0 12px;padding:12px;border:1px solid #526d79;border-radius:7px;background:#071a25;color:#e9f2f3;font:inherit;font-weight:400;line-height:1.55}.knowledge-comment-form textarea::placeholder{color:#9eb3bd}
.knowledge-comments button{font:inherit;cursor:pointer;min-height:44px;padding:9px 17px;border:1px solid #cfb374;border-radius:8px;color:#f0d798;background:linear-gradient(135deg,#453b25,#16323b);font-weight:600;white-space:normal;overflow-wrap:anywhere}.knowledge-comments button:hover{border-color:#f3dda7;background:#384335}.knowledge-comments button:disabled{opacity:.6;cursor:wait}.knowledge-comments :is(button,summary,textarea):focus-visible{outline:3px solid #8bd7dd;outline-offset:3px}
.knowledge-comment{margin:16px 0;padding:18px;background:#0b202c;border:1px solid #365361;border-radius:10px;min-width:0}.knowledge-comment>header{display:flex;justify-content:space-between;align-items:baseline;gap:8px 20px;flex-wrap:wrap}.knowledge-comment>header strong{color:#e9ce8e;overflow-wrap:anywhere}.knowledge-comment time{font-size:.8rem;color:#aabec7}.knowledge-comment-text{white-space:pre-wrap;overflow-wrap:anywhere;margin:13px 0}.knowledge-comment-status,.knowledge-comment-empty{color:#b4cbd0;font-size:.9rem}.knowledge-comment-status:empty{display:none}.knowledge-comments .knowledge-comment-delete{background:transparent;border-color:#52636a;color:#b9cbd1;font-size:.8rem;padding:5px 12px}.knowledge-comment-confirm{padding:12px;border:1px solid #a28654;border-radius:8px;margin:12px 0}.knowledge-comment-confirm button{margin:0 10px 8px 0}.knowledge-replies{border-top:1px solid #365361;margin-top:16px}.knowledge-replies>div{padding:0 8px}.knowledge-reply{border-left:3px solid #75bcbf;background:#102b37}.knowledge-comment-more{margin:8px 0 18px}
@media(max-width:480px){.knowledge-comments{padding:16px}.knowledge-comment{padding:13px}.knowledge-replies>div{padding:0}.knowledge-comment-form form{padding:0 12px 12px}.knowledge-comment>header{display:block}.knowledge-comment time{display:block;margin-top:3px}}

.knowledge-jumps{align-items:center}.knowledge-search{display:flex;align-items:center;gap:8px;flex:1 1 240px;max-width:430px;margin-left:16px}.knowledge-search input{box-sizing:border-box;min-width:0;flex:1;width:100%;height:40px;border:1px solid #b49357;border-radius:7px;background:#0a202a;color:#f2f3eb;padding:9px 12px;font:inherit}.knowledge-search input::placeholder{color:#b9ccd2}.knowledge-search input:focus-visible{outline:2px solid #52dbd9;outline-offset:2px}.knowledge-search-status{color:var(--gold);margin:0 0 16px}.knowledge .knowledge-card[hidden],.knowledge .knowledge-section[hidden],.knowledge-search button[hidden],.knowledge-search-status[hidden]{display:none}.knowledge-jumps button:disabled{opacity:.4;cursor:default}@media(max-width:650px){.knowledge-search{flex-basis:100%;max-width:none;margin-left:0}.knowledge-search button{flex:0 0 auto}}

/* Tutorial-style overview: warm gold, original portraits and distinct emblems. */
.knowledge-jumps>button,.knowledge-search button{min-height:44px;border:1px solid #a88b50;border-radius:9px;color:#f0d393;background:linear-gradient(135deg,#3a3424,#102a35);box-shadow:inset 0 1px #fff1c514;font-weight:600;padding:10px 15px}.knowledge-jumps>button:not(:disabled):hover,.knowledge-search button:hover{border-color:#f0d393;background:linear-gradient(135deg,#55462b,#193642)}
.knowledge-section>h2{color:#e8c783;border-bottom-color:#a58b564d;letter-spacing:.01em}
.knowledge-grid{gap:16px}.knowledge .knowledge-card{border:1px solid #9e824b;border-radius:13px;background:radial-gradient(ellipse at 0 0,#ac88441a,transparent 65%),linear-gradient(135deg,#17323e,#0b202b);box-shadow:inset 0 1px #ffe5a315,0 5px 16px #0002;transition:border-color .18s,box-shadow .18s}.knowledge .knowledge-card:hover,.knowledge .knowledge-card[open]{border-color:#e7c77f;box-shadow:inset 0 1px #ffe5a329,0 6px 20px #0003}.knowledge-card>summary{padding:21px;gap:16px;min-height:142px}.knowledge-card>summary:hover{background:#e8bd7005}.knowledge-card-title{color:#f0d393;font-size:1.1rem;letter-spacing:.01em}.knowledge-card-desc{color:#c1d0d5;line-height:1.6}.knowledge .knowledge-icon,.knowledge-featured .knowledge-icon{width:64px;height:64px;flex:0 0 64px;box-sizing:border-box;border:1px solid #d1ae63;border-radius:12px;color:#f2d592;background:radial-gradient(circle at 35% 20%,#5a4b30,#142d38 75%);box-shadow:inset 0 0 0 3px #081c2859,0 4px 10px #0003;overflow:hidden}.knowledge .knowledge-icon svg{width:36px;height:36px;stroke-width:1.5}.knowledge-art{border-radius:9px;object-fit:contain}.knowledge-plus{border:1px solid #b294595e;border-radius:50%;width:23px;height:23px;flex:0 0 23px;display:grid;place-items:center;font-size:18px;background:#e8bd700a;margin-top:1px}.knowledge-ready .knowledge-badge{align-self:flex-start;border:1px solid #b99a58;border-radius:6px;padding:6px 10px;background:linear-gradient(135deg,#4e4026,#21333a);color:#ffe3a0;font-size:.78rem;font-weight:600;letter-spacing:0}.knowledge-card:not(.knowledge-ready) .knowledge-badge{color:#bca77b}.knowledge-preview{border-top-color:#b89b5740;background:#071c2740}.knowledge-card summary:focus-visible{outline:3px solid #7ddadb;outline-offset:-4px}
@media(max-width:650px){.knowledge-card>summary{padding:17px;gap:12px;min-height:125px}.knowledge .knowledge-icon,.knowledge-featured .knowledge-icon{width:54px;height:54px;flex-basis:54px}.knowledge .knowledge-icon svg{width:31px;height:31px}.knowledge-card-title{font-size:1.02rem}.knowledge-jumps>button{padding:10px}}
@media(prefers-reduced-motion:reduce){.knowledge .knowledge-card{transition:none}}

/* Consistent overview tiles with turquoise accents and room for expanded content. */
.knowledge .knowledge-grid{grid-template-columns:repeat(3,minmax(0,1fr));align-items:start}
.knowledge .knowledge-card>summary{box-sizing:border-box;min-height:224px;align-items:flex-start;position:relative;padding:22px 20px}
.knowledge .knowledge-card-copy{align-self:stretch;flex:1;min-height:178px;padding-right:4px}
.knowledge .knowledge-card .knowledge-badge{margin-top:auto;padding-top:6px}
.knowledge .knowledge-ready .knowledge-badge{padding:6px 10px}
.knowledge .knowledge-card-title{padding-right:16px}
.knowledge .knowledge-plus{position:absolute;right:13px;top:14px;color:#79ded9;border-color:#4ebcb766;background:#123d4380}
.knowledge .knowledge-card{background:radial-gradient(ellipse at 100% 0,#24aaa71a,transparent 65%),linear-gradient(135deg,#17323e,#0b202b);border-top:2px solid #62bdb5}
.knowledge .knowledge-card:hover,.knowledge .knowledge-card[open]{border-color:#79d5cb;box-shadow:inset 0 1px #8df5e922,0 5px 20px #0003}
.knowledge .knowledge-icon{background:radial-gradient(circle at 25% 10%,#357073,#152e39 78%);box-shadow:inset 0 0 0 3px #081c2859,0 3px 12px #123b3d66}
.knowledge .knowledge-icon svg{color:#8ee3da}
.knowledge .knowledge-section>h2{border-bottom-color:#5ec3ba4d}
.knowledge .knowledge-jumps>button:not(:disabled):hover{border-color:#6dd9d0;color:#a1f0e8;background:linear-gradient(135deg,#234b4b,#193642)}
@media(max-width:1100px){.knowledge .knowledge-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){.knowledge .knowledge-grid{grid-template-columns:1fr}.knowledge .knowledge-card>summary{min-height:196px;padding:18px 17px}.knowledge .knowledge-card-copy{min-height:158px}.knowledge .knowledge-card-title{padding-right:20px}}

.knowledge .knowledge-hero .knowledge-tagline{color:#f0cf88;font-size:clamp(17px,2vw,22px);line-height:1.5;margin:10px 0 22px;font-weight:600}

.knowledge .knowledge-sunglasses{display:inline-block;width:1.3em;height:1.3em;vertical-align:-.22em;object-fit:contain}

.knowledge .knowledge-intro-copy{max-width:960px;border-top:1px solid #6dcfc33d;margin-top:26px;padding-top:24px}.knowledge .knowledge-intro-heading{color:#7fe1d7;font-size:clamp(20px,2.3vw,28px);line-height:1.4;margin:0 0 20px}.knowledge .knowledge-intro-copy p{max-width:none;line-height:1.8;margin:0 0 18px}.knowledge .knowledge-intro-copy p:last-child{margin-bottom:0}

/* Quiet intelligence dossier behind the Leaks introduction. */
.knowledge .knowledge-hero{isolation:isolate}
.knowledge .knowledge-hero> *{position:relative;z-index:1}
.knowledge .knowledge-hero:after{content:"";position:absolute;z-index:0;pointer-events:none;top:-16px;right:-65px;bottom:auto;width:72%;max-width:880px;height:540px;border:0;transform:none;background:url('./mustang-leaks-dossier-v1.png') no-repeat right top/contain;opacity:.34;mask-image:linear-gradient(to bottom,#000 55%,transparent 100%);-webkit-mask-image:linear-gradient(to bottom,#000 55%,transparent 100%)}
@media(max-width:650px){.knowledge .knowledge-hero:after{top:0;right:-120px;width:640px;max-width:none;height:400px;opacity:.20}}
.knowledge .knowledge-hero:after{mask-image:linear-gradient(to right,transparent,#000 40%),linear-gradient(to bottom,#000 55%,transparent 100%);mask-composite:intersect;-webkit-mask-image:linear-gradient(to right,transparent,#000 40%),linear-gradient(to bottom,#000 55%,transparent 100%);-webkit-mask-composite:source-in}

.knowledge .knowledge-intro-toggle{display:block;list-style:none;cursor:pointer;border-radius:6px}
.knowledge .knowledge-intro-toggle::-webkit-details-marker{display:none}
.knowledge .knowledge-intro-toggle::marker{content:""}
.knowledge .knowledge-intro-toggle:focus-visible{outline:2px solid var(--gold);outline-offset:8px}
.knowledge .knowledge-intro-toggle .knowledge-intro-heading{margin-bottom:10px}
.knowledge .knowledge-intro-arrows{display:flex;gap:13px;align-items:center;width:max-content;height:26px;padding:0 3px 7px;color:#f3cf83}
.knowledge .knowledge-intro-arrows>span{display:block;width:12px;height:12px;border-right:3px solid currentColor;border-bottom:3px solid currentColor;transform:rotate(45deg);transition:transform .2s ease}
.knowledge .knowledge-intro-toggle:hover .knowledge-intro-arrows{color:#ffe9b5}
.knowledge .knowledge-intro-copy[open] .knowledge-intro-arrows>span{transform:translateY(6px) rotate(225deg)}
.knowledge .knowledge-intro-body{padding-top:18px}
@media(prefers-reduced-motion:reduce){.knowledge .knowledge-intro-arrows>span{transition:none}}

/* Mustang Leaks only: intelligence room and individual dossier textures. */
body.leaks-area{background-color:#06151d;background-image:linear-gradient(#06151d18,#06151d38),url('./leaks-intelligence-background.png');background-position:center top;background-size:100% auto;background-repeat:repeat-y;background-attachment:fixed}
.leaks-area .knowledge-section>h2{color:#edc77e;text-shadow:0 2px 8px #000}
.leaks-area .knowledge .knowledge-card{background:#071c25e8;border-color:#bda368;border-top-color:#78d9ce;overflow:hidden;box-shadow:0 5px 20px #0003}
.leaks-area .knowledge .knowledge-card>summary{isolation:isolate}
.leaks-area .knowledge .knowledge-card>summary::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:url('./leaks-topic-textures.png');background-size:200% 400%;background-position:100% 100%;opacity:.56}
.leaks-area .knowledge .knowledge-card[data-topic="ships"]>summary::before{background-position:0 0}
.leaks-area .knowledge .knowledge-card[data-topic="officers"]>summary::before{background-position:100% 0}
.leaks-area .knowledge .knowledge-card[data-topic="ai"]>summary::before{background-position:0 33.333333%}
.leaks-area .knowledge .knowledge-card[data-topic="mecha"]>summary::before{background-position:100% 33.333333%}
.leaks-area .knowledge .knowledge-card[data-topic="planes"]>summary::before{background-position:0 66.666667%}
.leaks-area .knowledge .knowledge-card[data-topic="airships"]>summary::before{background-position:100% 66.666667%}
.leaks-area .knowledge .knowledge-card[data-topic="equipment"]>summary::before{background-position:0 100%}
.leaks-area .knowledge .knowledge-card-title,.leaks-area .knowledge .knowledge-card-desc{text-shadow:0 1px 4px #001016,0 0 12px #001016}
.leaks-area .knowledge .knowledge-card:hover,.leaks-area .knowledge .knowledge-card[open]{border-color:#83e4d9}
@media(max-width:650px){body.leaks-area{background-size:auto 1500px;background-attachment:scroll}.leaks-area .knowledge .knowledge-card>summary::before{opacity:.48}}

.knowledge-viewers li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:3px 16px}.knowledge-viewers li span:nth-child(2){color:#e9cf92;white-space:nowrap}.knowledge-viewers time{grid-column:1/-1;font-size:.85rem;color:#acbdc3}