:root{--bg:#050810;--panel:#09111e;--panel2:#0c1625;--ink:#e8f7ff;--muted:#8ba2b6;--line:#193246;--cyan:#46e6ff;--mint:#57f2c6;--violet:#9575ff;--danger:#ff5f7f;color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;color:var(--ink);background:linear-gradient(rgba(38,89,115,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(38,89,115,.05) 1px,transparent 1px),var(--bg);background-size:40px 40px;font-family:"Segoe UI","Noto Sans SC",sans-serif;font-size:16px;line-height:1.65}body:after{content:"";position:fixed;inset:0;z-index:90;pointer-events:none;background:repeating-linear-gradient(0deg,transparent 0 3px,rgba(255,255,255,.012) 3px 4px)}a{color:inherit}h1,h2,h3,p{overflow-wrap:anywhere}button,input{font:inherit}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}[hidden]{display:none!important}.skip-link,.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link:focus{z-index:100;top:8px;left:8px;width:auto;height:auto;clip:auto;padding:10px;background:var(--cyan);color:#001018}.site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);background:rgba(5,8,16,.94);backdrop-filter:blur(8px)}.nav{width:min(1240px,calc(100% - 40px));min-height:68px;margin:auto;display:flex;align-items:center;gap:28px}.brand{display:grid;grid-template-columns:38px auto;column-gap:11px;align-items:center;text-decoration:none}.brand img{width:38px;height:38px;grid-row:1/3}.brand span{font:800 15px "Cascadia Mono",Consolas,monospace;letter-spacing:.06em}.brand small{color:var(--muted);font:10px "Cascadia Mono",Consolas,monospace;letter-spacing:.12em}.links{display:flex;gap:3px;margin-left:auto}.links a{padding:8px 13px;color:var(--muted);font:700 12px "Cascadia Mono",Consolas,monospace;text-decoration:none}.links a:hover,.links a[aria-current=page]{color:var(--cyan);background:#0b1724}.nav-cta,.hud-button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 14px;border:1px solid var(--line);background:#08131f;color:var(--cyan);font:700 11px "Cascadia Mono",Consolas,monospace;text-decoration:none}.nav-cta:hover,.hud-button:hover{border-color:var(--cyan);box-shadow:0 0 18px rgba(70,230,255,.13)}.hud-button.primary{border-color:var(--cyan);background:var(--cyan);color:#021018}.system-line{margin:0;color:var(--mint);font:11px "Cascadia Mono",Consolas,monospace;letter-spacing:.08em}.pulse,.status-dot{display:inline-block;width:7px;height:7px;margin-right:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px var(--mint)}
/* home */
.boot-screen{border-bottom:1px solid var(--line)}.boot-grid{width:min(1240px,calc(100% - 40px));min-height:calc(100vh - 69px);margin:auto;display:grid;grid-template-columns:1.1fr .9fr;gap:80px;align-items:center;padding:72px 0}.boot-copy h1{margin:16px 0 0;font:900 clamp(5rem,10vw,9rem)/.78 "Arial Narrow","Segoe UI",sans-serif;letter-spacing:-.075em}.boot-subtitle{margin:28px 0 0;color:var(--cyan);font:700 14px "Cascadia Mono",Consolas,monospace;letter-spacing:.18em}.boot-desc{margin:21px 0 0;color:var(--muted);font-size:17px}.command-search{max-width:720px;min-height:58px;margin-top:30px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;border:1px solid #28617a;background:#06101a;box-shadow:inset 0 0 25px rgba(70,230,255,.025)}.command-search label{padding-left:16px;color:var(--cyan);font:700 12px "Cascadia Mono",monospace}.command-search input{min-width:0;padding:14px 10px;border:0;outline:0;background:transparent;color:var(--ink);font:14px "Cascadia Mono",monospace}.command-search button{align-self:stretch;padding:0 16px;border:0;border-left:1px solid var(--line);background:transparent;color:var(--mint);font:700 11px "Cascadia Mono",monospace;cursor:pointer}.boot-actions{display:flex;gap:10px;margin-top:18px}.status-console{border:1px solid #24536a;background:#07111c;box-shadow:8px 8px 0 #02050a}.console-head{min-height:45px;display:flex;align-items:center;justify-content:space-between;padding:0 15px;border-bottom:1px solid var(--line);background:#0b1926;color:var(--muted);font:11px "Cascadia Mono",monospace}.console-head i{color:var(--mint);font-style:normal}.status-console dl{margin:0;padding:14px 20px}.status-console dl div{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px dashed #1a3446;font:12px "Cascadia Mono",monospace}.status-console dt{color:var(--muted)}.status-console dd{margin:0;color:var(--ink)}.signal-graph{height:85px;display:flex;align-items:end;gap:7px;padding:14px 20px}.signal-graph span{flex:1;height:35%;background:var(--cyan);opacity:.65}.signal-graph span:nth-child(2n){height:70%}.signal-graph span:nth-child(3n){height:48%}.signal-graph span:nth-child(5n){height:90%}.status-console>p{margin:0;padding:16px 20px;border-top:1px solid var(--line);color:var(--muted);font:11px/1.9 "Cascadia Mono",monospace}.status-console>p strong{color:var(--mint)}.cursor{color:var(--cyan)}
.console-section{width:min(1240px,calc(100% - 40px));margin:auto;padding:96px 0;border-bottom:1px solid var(--line)}.section-terminal-head{display:grid;grid-template-columns:190px 1fr auto;gap:30px;align-items:end;margin-bottom:30px}.section-terminal-head>div{display:flex;gap:12px;color:var(--muted);font:11px "Cascadia Mono",monospace}.section-terminal-head>div span{color:var(--cyan)}.section-terminal-head>div p{margin:0}.section-terminal-head h2{margin:0;font-size:32px;letter-spacing:.03em}.section-terminal-head small,.section-terminal-head>a{color:var(--muted);font:10px "Cascadia Mono",monospace;text-decoration:none}.section-terminal-head>a:hover{color:var(--cyan)}.module-matrix{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.module-matrix>a{position:relative;min-height:220px;padding:22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-decoration:none;overflow:hidden}.module-matrix>a:before,.archive-node:before{content:"";position:absolute;inset:0;border:1px solid transparent;pointer-events:none;transition:.2s}.module-matrix>a:hover:before,.archive-node:hover:before{border-color:var(--cyan);box-shadow:inset 0 0 22px rgba(70,230,255,.08)}.module-matrix>a>span{color:var(--muted);font:10px "Cascadia Mono",monospace}.module-matrix i{display:block;margin-top:28px;color:var(--cyan);font:700 12px "Cascadia Mono",monospace}.module-matrix h3{margin:10px 0 6px;font-size:17px}.module-matrix p{margin:0;color:var(--muted);font:11px "Cascadia Mono",monospace}.module-matrix b{position:absolute;left:22px;bottom:18px;color:var(--mint);font:10px "Cascadia Mono",monospace;opacity:0}.module-matrix>a:hover b{opacity:1}.node-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.archive-node{position:relative;min-height:300px;padding:24px;border:1px solid var(--line);background:#07101a;text-decoration:none}.archive-node header,.archive-node footer{display:flex;justify-content:space-between;gap:20px;color:var(--muted);font:10px "Cascadia Mono",monospace}.archive-node header i{font-style:normal}.archive-node h3{margin:45px 0 0;color:var(--cyan);font:800 43px "Cascadia Mono",monospace}.archive-node>p{margin:3px 0 0;color:var(--ink);font-size:16px}.archive-node ul,.course-entry ul{display:flex;flex-wrap:wrap;gap:6px;margin:24px 0;padding:0;list-style:none}.archive-node li,.course-entry li{padding:3px 7px;border:1px solid var(--line);color:var(--muted);font:9px "Cascadia Mono",monospace}.archive-node footer{position:absolute;left:24px;right:24px;bottom:20px;padding-top:12px;border-top:1px dashed var(--line)}.archive-node footer b{color:var(--mint)}
.path-console{padding-bottom:120px}.path-chain{max-width:760px;margin:50px auto 0;display:grid;justify-items:center}.path-chain>a,.path-branch>a{min-width:270px;padding:15px 18px;border:1px solid var(--line);background:#07111b;text-align:center;text-decoration:none}.path-chain>a:hover,.path-branch>a:hover{border-color:var(--cyan);box-shadow:0 0 18px rgba(70,230,255,.09)}.path-chain>a span{float:left;color:var(--muted);font:10px "Cascadia Mono",monospace}.path-chain strong{display:block;color:var(--cyan);font:700 20px "Cascadia Mono",monospace}.path-chain small,.path-branch small{display:block;color:var(--muted);font:9px "Cascadia Mono",monospace}.path-chain>i{height:42px;color:var(--cyan);font-style:normal;text-shadow:0 0 9px var(--cyan)}.path-branch{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.path-branch>a{min-width:170px;color:var(--ink);font:700 16px "Cascadia Mono",monospace}
/* archive database */
.archive-shell{width:min(1240px,calc(100% - 40px));margin:auto}.database-header{padding:72px 0 45px;border-bottom:1px solid var(--line)}.database-header h1{margin:15px 0 5px;font:800 clamp(3rem,6vw,5.5rem) "Arial Narrow","Segoe UI",sans-serif;letter-spacing:-.045em}.database-header>p:last-child{margin:0;color:var(--muted);font:11px "Cascadia Mono",monospace}.database-toolbar{position:sticky;top:69px;z-index:20;display:grid;grid-template-columns:1fr auto auto;gap:14px;align-items:center;padding:13px 0;border-bottom:1px solid var(--line);background:rgba(5,8,16,.96)}.database-toolbar label{min-height:44px;display:flex;align-items:center;border:1px solid var(--line);background:#06101a}.database-toolbar label span{padding-left:13px;color:var(--cyan);font:11px "Cascadia Mono",monospace}.database-toolbar input{width:100%;padding:10px;border:0;outline:0;background:transparent;color:var(--ink);font:13px "Cascadia Mono",monospace}.database-toolbar>div{display:flex}.database-toolbar button{min-height:38px;padding:6px 10px;border:1px solid var(--line);background:transparent;color:var(--muted);font:10px "Cascadia Mono",monospace;cursor:pointer}.database-toolbar button.active,.database-toolbar button:hover{border-color:var(--cyan);color:var(--cyan)}.result-count{color:var(--muted);font:10px "Cascadia Mono",monospace}.result-count strong{color:var(--mint)}.database-layout{display:grid;grid-template-columns:210px 1fr;gap:45px;align-items:start;padding-bottom:100px}.module-index{position:sticky;top:137px;display:grid;padding-top:40px}.module-index strong{padding:10px 0;border-bottom:1px solid var(--cyan);color:var(--cyan);font:11px "Cascadia Mono",monospace}.module-index a{padding:9px 0;border-bottom:1px solid var(--line);color:var(--muted);font:10px "Cascadia Mono",monospace;text-decoration:none}.module-index a:hover{color:var(--cyan)}.directory-group{padding-top:52px}.directory-group>header{display:flex;align-items:center;gap:16px;margin-bottom:13px}.directory-group>header span{color:var(--cyan);font:10px "Cascadia Mono",monospace}.directory-group h2{margin:0;font-size:22px}.entry-list{border-top:1px solid var(--line)}.course-entry{display:grid;grid-template-columns:70px minmax(0,1fr) 230px 140px 80px;gap:18px;align-items:center;min-height:150px;padding:18px 8px;border-bottom:1px solid var(--line);text-decoration:none;transition:.2s}.course-entry:hover{background:#081420;box-shadow:inset 3px 0 var(--cyan)}.node-id{color:var(--muted);font:9px "Cascadia Mono",monospace}.course-entry small{color:var(--muted);font:9px "Cascadia Mono",monospace}.course-entry h3{margin:5px 0 0;color:var(--cyan);font:700 25px "Cascadia Mono",monospace}.course-entry p{margin:3px 0 0;color:var(--ink);font-size:13px}.course-entry dl{display:grid;grid-template-columns:auto 1fr;gap:3px 8px;margin:0;font:9px "Cascadia Mono",monospace}.course-entry dt{color:var(--muted)}.course-entry dd{margin:0;color:var(--mint)}.course-entry>i{color:var(--muted);font:9px "Cascadia Mono",monospace;font-style:normal}.course-entry:hover>i{color:var(--cyan)}.empty-state{padding:50px;color:var(--muted);font:11px "Cascadia Mono",monospace;text-align:center}
/* legacy course detail / about */
.site-shell,.home-shell{width:min(1120px,calc(100% - 40px));margin:auto}.course-hero,.about-hero,.page-head{padding:80px 0 60px;border-bottom:1px solid var(--line)}.course-hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:55px;align-items:end}.eyebrow,.kicker{margin:0 0 14px;color:var(--cyan);font:11px "Cascadia Mono",monospace;letter-spacing:.1em;text-transform:uppercase}.course-hero h1,.about-hero h1,.page-head h1{margin:0;font-size:clamp(3rem,6vw,5rem);line-height:1}.lead,.about-lead p{color:var(--muted);font-size:16px}.actions{display:flex;gap:9px;margin-top:23px}.button{min-height:42px;padding:8px 13px;border:1px solid var(--line);background:#07121d;color:var(--ink);font:11px "Cascadia Mono",monospace;text-decoration:none}.button.primary{border-color:var(--cyan);color:var(--cyan)}.hero-panel,.note-card,.course-card,.resource-card{padding:20px;border:1px solid var(--line);background:#07111b}.facts{display:grid;grid-template-columns:1fr 1fr}.fact{padding:14px;border-bottom:1px solid var(--line)}.fact strong{display:block;color:var(--cyan);font:9px "Cascadia Mono",monospace}.fact span{font-size:13px}.section,.principles-section{padding:70px 0}.section-title,.section-intro h2{margin:0;font-size:36px}.section-desc{color:var(--muted)}.path-grid,.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}.note-card h3,.course-card h3,.resource-card h3{margin:0 0 8px}.note-card p,.course-card p,.resource-card p{color:var(--muted);font-size:13px}.resource-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.manifesto,.final-cta{margin:55px 0;padding:45px;border:1px solid var(--line);background:#07111b}.manifesto blockquote{font-size:34px}.principle{display:grid;grid-template-columns:50px 1fr 50px;gap:20px;padding:25px 0;border-bottom:1px solid var(--line)}.principle p{color:var(--muted)}.footer{min-height:100px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:25px;padding:24px max(20px,calc((100vw - 1240px)/2));border-top:1px solid var(--line);color:var(--muted);font:10px "Cascadia Mono",monospace}.footer span{color:var(--cyan)}.footer p{margin:0}.footer small{justify-self:end}.reveal{opacity:0;transform:translateY(12px);animation:reveal .55s ease forwards}@keyframes reveal{to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}
@media(max-width:950px){.boot-grid,.course-hero-grid{grid-template-columns:1fr}.boot-grid{padding:70px 0}.module-matrix{grid-template-columns:repeat(2,1fr)}.database-layout{grid-template-columns:1fr}.module-index{position:static;grid-template-columns:repeat(2,1fr)}.course-entry{grid-template-columns:60px 1fr 180px 100px}.course-entry>i{display:none}.section-terminal-head{grid-template-columns:150px 1fr}.section-terminal-head>:last-child{grid-column:2}.path-grid,.course-grid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.nav,.boot-grid,.console-section,.archive-shell,.site-shell,.home-shell{width:min(100% - 24px,1240px)}.nav{flex-wrap:wrap;padding:9px 0}.brand small,.nav-cta{display:none}.links{width:100%;order:3}.links a{flex:1;text-align:center}.boot-grid{min-height:auto;gap:45px;padding:55px 0}.boot-copy h1{font-size:5rem}.boot-subtitle{font-size:11px}.command-search{grid-template-columns:auto 1fr}.command-search button{grid-column:1/3;border-top:1px solid var(--line);min-height:40px}.boot-actions{flex-direction:column}.module-matrix,.node-grid{grid-template-columns:1fr}.console-section{padding:65px 0}.section-terminal-head{display:block}.section-terminal-head h2{margin-top:8px;font-size:27px}.section-terminal-head>:last-child{display:block;margin-top:8px}.path-branch{grid-template-columns:1fr;width:100%}.path-branch>a{min-width:0}.database-header{padding:52px 0 35px}.database-toolbar{top:117px;grid-template-columns:1fr auto}.database-toolbar>div{grid-column:1/3;overflow:auto}.database-layout{gap:10px}.module-index{grid-template-columns:1fr 1fr}.course-entry{grid-template-columns:1fr;gap:8px;padding:20px 8px}.node-id{display:none}.course-entry ul{margin:8px 0}.course-entry dl{grid-template-columns:auto 1fr}.facts,.path-grid,.course-grid,.resource-grid{grid-template-columns:1fr}.footer{grid-template-columns:1fr;text-align:center}.footer small{justify-self:center}}

/* Readability pass: terminal aesthetics without tiny text */
:root{--muted:#b7c8d6;--line:#2b4d61}
.brand span{font-size:17px}.brand small{font-size:12px;letter-spacing:.06em}
.links a{font-size:14px}.nav-cta,.hud-button{font-size:13px}
.system-line{font-size:13px;letter-spacing:.04em}
.boot-subtitle{font-size:16px;letter-spacing:.1em}.boot-desc{font-size:18px}
.command-search label,.command-search input,.command-search button{font-size:14px}
.console-head{font-size:13px}.status-console dl div{font-size:14px}.status-console>p{font-size:13px}
.section-terminal-head>div,.section-terminal-head small,.section-terminal-head>a{font-size:13px}
.module-matrix>a>span,.module-matrix i,.module-matrix p,.module-matrix b{font-size:13px}.module-matrix h3{font-size:20px}
.archive-node header,.archive-node footer{font-size:12px}.archive-node>p{font-size:17px}.archive-node li,.course-entry li{font-size:12px}
.path-chain>a span,.path-chain small,.path-branch small{font-size:12px}
.database-header>p:last-child{font-size:13px}
.database-toolbar label span,.database-toolbar input{font-size:14px}.database-toolbar button,.result-count{font-size:13px}
.module-index strong{font-size:13px}.module-index a{font-size:12px}
.directory-group>header span{font-size:13px}.directory-group h2{font-size:25px}
.node-id,.course-entry small{font-size:12px}.course-entry h3{font-size:28px}.course-entry p{font-size:15px}
.course-entry dl,.course-entry>i{font-size:12px}
.eyebrow,.kicker{font-size:13px}.lead,.about-lead p{font-size:17px}
.fact strong{font-size:12px}.fact span{font-size:15px}
.note-card p,.course-card p,.resource-card p,.principle p{font-size:15px}
.footer{font-size:12px}
@media(max-width:680px){.boot-subtitle{font-size:14px}.system-line{font-size:12px}.module-index a{font-size:12px}.course-entry p{font-size:15px}}

/* Visual depth and typography */
@font-face{font-family:"Archive Rubik";font-style:normal;font-weight:700;font-display:swap;src:url("../fonts.gstatic.com/iJWZBXyIfDnIV5PNhY1KTN7Z-Yh-4I-1UA.ttf") format("truetype")}
body{font-family:system-ui,"Microsoft YaHei UI","Microsoft YaHei","PingFang SC",sans-serif;letter-spacing:0;background:linear-gradient(rgba(70,230,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(70,230,255,.035) 1px,transparent 1px),linear-gradient(135deg,transparent 0 72%,rgba(149,117,255,.035) 72% 100%),var(--bg);background-size:48px 48px,48px 48px,100% 100%,auto}
.brand span,.boot-copy h1,.section-terminal-head h2,.database-header h1,.course-entry h3,.archive-node h3,.path-chain strong,.path-branch>a{font-family:"Archive Rubik","Microsoft YaHei UI",sans-serif}
.system-line,.brand small,.links a,.nav-cta,.hud-button,.boot-subtitle,.command-search label,.command-search input,.command-search button,.console-head,.status-console dl div,.status-console>p,.section-terminal-head>div,.section-terminal-head small,.section-terminal-head>a,.module-matrix>a>span,.module-matrix i,.module-matrix p,.module-matrix b,.archive-node header,.archive-node footer,.path-chain small,.path-branch small,.database-header>p:last-child,.database-toolbar label span,.database-toolbar input,.database-toolbar button,.result-count,.module-index strong,.module-index a,.directory-group>header span,.node-id,.course-entry small,.course-entry dl,.course-entry>i,.footer{font-family:"Archive Rubik","Microsoft YaHei UI",sans-serif;letter-spacing:.015em}
.boot-copy h1{font-size:clamp(4.8rem,8vw,7.6rem);line-height:.88;letter-spacing:-.065em;text-shadow:4px 4px 0 rgba(149,117,255,.28)}
.boot-subtitle{display:inline-block;padding:6px 10px;border-left:3px solid var(--violet);background:rgba(149,117,255,.08);color:#c0b2ff}
.status-console{position:relative;overflow:hidden;background:linear-gradient(180deg,#091522,#060d16);box-shadow:10px 10px 0 rgba(149,117,255,.16)}
.archive-radar{position:relative;width:min(330px,82%);aspect-ratio:1;margin:24px auto 18px;border:1px solid #26526a;border-radius:50%;background:repeating-radial-gradient(circle,transparent 0 45px,rgba(70,230,255,.13) 46px 47px),linear-gradient(90deg,transparent 49.7%,rgba(70,230,255,.14) 50%,transparent 50.3%),linear-gradient(transparent 49.7%,rgba(70,230,255,.14) 50%,transparent 50.3%)}
.archive-radar:before{content:"";position:absolute;inset:12%;border:1px dashed rgba(149,117,255,.42);border-radius:50%}.radar-sweep{position:absolute;inset:0;border-radius:50%;background:conic-gradient(from 0deg,rgba(70,230,255,.26),transparent 18%);animation:radar 5s linear infinite}.radar-core{position:absolute;left:50%;top:50%;width:58px;height:58px;display:grid;place-items:center;border:1px solid var(--cyan);border-radius:50%;background:#07131f;color:var(--cyan);font:700 18px "Archive Rubik",sans-serif;box-shadow:0 0 24px rgba(70,230,255,.25);transform:translate(-50%,-50%)}.radar-node{position:absolute;width:25px;height:25px;display:grid;place-items:center;border:1px solid var(--violet);border-radius:50%;background:#0d1220;color:#c3b9ff;font:10px "Archive Rubik",sans-serif;font-style:normal;box-shadow:0 0 12px rgba(149,117,255,.28)}.r1{left:18%;top:27%}.r2{right:14%;top:38%}.r3{left:27%;bottom:15%}.r4{right:29%;bottom:23%}.archive-radar small{position:absolute;left:50%;bottom:11px;color:var(--muted);font-size:11px;transform:translateX(-50%);white-space:nowrap}@keyframes radar{to{transform:rotate(360deg)}}
.status-console dl{display:grid;grid-template-columns:repeat(2,1fr);gap:0;padding:0 20px 18px}.status-console dl div{display:block;padding:12px;border:1px solid var(--line);border-right:0;border-bottom:0}.status-console dl div:nth-child(2n){border-right:1px solid var(--line)}.status-console dt{font-size:11px}.status-console dd{margin-top:5px;font-size:13px}.signal-graph{display:none}
.module-matrix>a{min-height:245px;background:#07101a}.module-matrix>a:nth-child(3n+1){background:linear-gradient(145deg,rgba(70,230,255,.07),transparent 55%),#07101a}.module-matrix>a:nth-child(3n+2){background:linear-gradient(145deg,rgba(149,117,255,.09),transparent 55%),#07101a}.module-matrix>a:after{content:"";position:absolute;right:18px;top:20px;width:48px;height:48px;border:1px solid rgba(70,230,255,.22);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}.module-matrix>a:nth-child(even):after{border-color:rgba(149,117,255,.45);transform:rotate(30deg)}.module-matrix i{margin-top:50px;font-size:14px}.module-matrix h3{font-size:21px}
.node-grid{grid-template-columns:repeat(3,1fr);grid-auto-flow:dense}.archive-node{min-height:320px;background:linear-gradient(180deg,#091522,#07101a)}.archive-node:nth-child(1),.archive-node:nth-child(4){grid-column:span 2}.archive-node:nth-child(1) h3,.archive-node:nth-child(4) h3{font-size:55px}.archive-node:nth-child(1):after,.archive-node:nth-child(4):after{content:"";position:absolute;right:28px;top:65px;width:110px;height:110px;border:1px solid rgba(149,117,255,.35);border-radius:50%;box-shadow:inset 0 0 0 18px rgba(149,117,255,.025),inset 0 0 0 36px rgba(70,230,255,.025)}
.path-chain{max-width:none;display:flex;align-items:center;justify-content:flex-start;gap:10px;overflow-x:auto;padding:50px 4px 30px}.path-chain>a{min-width:145px}.path-chain>i{height:auto;min-width:24px;text-align:center}.path-branch{min-width:190px;grid-template-columns:1fr}.path-branch>a{min-width:190px}.path-console{background:linear-gradient(90deg,transparent,rgba(149,117,255,.035),transparent)}
@media(max-width:950px){.node-grid{grid-template-columns:1fr 1fr}.archive-node:nth-child(1),.archive-node:nth-child(4){grid-column:span 1}.archive-node:nth-child(1):after,.archive-node:nth-child(4):after{display:none}}
@media(max-width:680px){.boot-copy h1{font-size:4.5rem}.archive-radar{width:78%}.status-console dl{grid-template-columns:1fr}.status-console dl div,.status-console dl div:nth-child(2n){border-right:1px solid var(--line)}.node-grid{grid-template-columns:1fr}.path-chain{align-items:stretch;flex-direction:column;overflow:visible}.path-chain>a,.path-branch,.path-branch>a{width:100%;min-width:0}.path-chain>i{transform:rotate(90deg)}}

/* Course dossier */
.course-dossier{padding:72px 0;border-top:1px solid var(--line)}
.dossier-heading{display:grid;grid-template-columns:170px 1fr;gap:32px;margin-bottom:40px}.dossier-heading>span{color:var(--cyan);font:700 13px "Archive Rubik","Microsoft YaHei UI",sans-serif}.dossier-heading h2{max-width:760px;margin:0;font-size:34px;line-height:1.2}.dossier-heading p{max-width:780px;margin:14px 0 0;color:var(--muted);font-size:16px}
.dossier-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.dossier-panel{padding:26px;border:1px solid var(--line);background:linear-gradient(145deg,rgba(70,230,255,.035),transparent 55%),#07111b}.dossier-panel.accent{border-color:#4d427a;background:linear-gradient(145deg,rgba(149,117,255,.11),transparent 55%),#090f1b}.dossier-panel>span{color:var(--cyan);font:12px "Archive Rubik","Microsoft YaHei UI",sans-serif}.dossier-panel h3{margin:10px 0 12px;font-size:21px}.dossier-panel p{margin:0;color:var(--muted);font-size:15px}.dossier-panel ul{margin:15px 0 0;padding-left:19px;color:var(--muted);font-size:15px}.dossier-panel li+li{margin-top:7px}
.syllabus-map{margin-top:40px;border-top:1px solid var(--line)}.syllabus-map>h3{margin:28px 0 18px;font-size:24px}.syllabus-row{display:grid;grid-template-columns:72px 210px 1fr;gap:24px;padding:19px 8px;border-bottom:1px solid var(--line)}.syllabus-row>span{color:var(--violet);font:700 12px "Archive Rubik","Microsoft YaHei UI",sans-serif}.syllabus-row strong{font-size:16px}.syllabus-row p{margin:0;color:var(--muted);font-size:15px}
.completion-box{margin-top:36px;padding:28px;border-left:3px solid var(--mint);background:#07131c}.completion-box span{color:var(--mint);font:700 12px "Archive Rubik","Microsoft YaHei UI",sans-serif}.completion-box h3{margin:8px 0;font-size:22px}.completion-box p{max-width:850px;margin:0;color:var(--muted);font-size:15px}
@media(max-width:760px){.dossier-heading{grid-template-columns:1fr;gap:8px}.dossier-grid{grid-template-columns:1fr}.syllabus-row{grid-template-columns:50px 1fr}.syllabus-row p{grid-column:2}.course-dossier{padding:55px 0}}

/* Prominent language archive entry buttons */
.course-hero .actions{gap:12px;margin-top:28px}
.course-hero .button{min-width:132px;min-height:48px;padding:11px 22px;border-color:#3f6579;color:#edfaff;font-family:system-ui,"Microsoft YaHei UI","Microsoft YaHei",sans-serif;font-size:15px;font-weight:750;letter-spacing:.02em}
.course-hero .button.primary{border-color:var(--cyan);background:rgba(70,230,255,.1);color:#8af0ff;box-shadow:inset 0 0 18px rgba(70,230,255,.05)}
.course-hero .button:hover{border-color:var(--cyan);background:#0a1a27;color:#fff;box-shadow:0 0 16px rgba(70,230,255,.12)}
@media(max-width:480px){.course-hero .actions{display:grid;grid-template-columns:1fr}.course-hero .button{width:100%}}

/* Remove per-course numbering while keeping module numbering */
.node-id{display:none}
.course-entry{grid-template-columns:minmax(0,1fr) 230px 140px 80px}
.dossier-heading>span{font-size:0}
.dossier-heading>span:after{content:"课程档案";font-size:13px}
.path-chain>a>span{display:none}
.radar-node{font-size:0}
@media(max-width:950px){.course-entry{grid-template-columns:minmax(0,1fr) 180px 100px}}
@media(max-width:680px){.course-entry{grid-template-columns:1fr}.course-entry dl{grid-column:1}.course-entry>i{display:block;grid-column:1}}