.course-library,.course-library *{box-sizing:border-box}.course-library{--library-ink:#f2ede5;--library-muted:#b8aea3;--library-faint:#847a72;--library-paper:#101012;--library-panel:#181719;--library-panel-raised:#211f20;--library-line:#373135;--library-line-strong:#5a4b4b;--library-red:#c54d4c;--library-red-dark:#7d3337;--library-gold:#d1aa69;background:var(--library-paper);min-height:100dvh;color:var(--library-ink);font-family:Noto Sans SC,Microsoft YaHei UI,system-ui,sans-serif;line-height:1.6;overflow:clip}.course-library a,.course-library button,.course-library input,.course-library select,.course-library textarea{font:inherit}.course-library a{color:inherit}.course-library :focus-visible{outline:2px solid var(--library-gold);outline-offset:3px}.library-header{z-index:10;border-bottom:1px solid var(--library-line);background:#101012f5;position:sticky;top:0}.library-main,.library-footer{width:min(100% - 40px,1400px);margin:0 auto}.library-wordmark{align-items:center;gap:12px;min-width:max-content;text-decoration:none;display:inline-flex}.library-wordmark strong,.library-wordmark small{display:block}.library-wordmark strong{font-family:IBM Plex Serif,Georgia,serif;font-size:.95rem;font-weight:600}.library-wordmark small{color:var(--library-faint);letter-spacing:.14em;margin-top:2px;font-size:.58rem;font-weight:700}.library-nav{align-items:center;gap:18px;display:flex}.library-nav a,.library-text-link,.library-user{color:var(--library-muted);font-size:.8rem;text-decoration:none}@media (hover:hover) and (pointer:fine){.library-nav a:hover,.library-text-link:hover{color:var(--library-gold)}}.library-user{color:var(--library-faint)}.library-main{padding:84px 0 0}.library-kicker{color:var(--library-gold);letter-spacing:.13em;text-transform:uppercase;margin:0;font-size:.7rem;font-weight:700}.library-button{border:1px solid var(--library-line-strong);min-height:46px;color:var(--library-ink);justify-content:center;align-items:center;gap:12px;padding:0 17px;font-size:.82rem;font-weight:700;text-decoration:none;display:inline-flex}.library-button--solid{border-color:var(--library-red);background:var(--library-red);color:#fff8f0}@media (hover:hover) and (pointer:fine){.library-button--solid:hover{background:#db5d56}}.library-button--quiet{background:0 0}@media (hover:hover) and (pointer:fine){.library-button--quiet:hover{border-color:var(--library-gold);color:var(--library-gold)}}.library-standard__copy>p:not(.library-kicker){max-width:600px;color:var(--library-muted);text-wrap:pretty;margin:24px 0 0;line-height:1.9}.library-text-link--bright{color:var(--library-gold);margin-top:24px;font-weight:700;display:inline-flex}.library-footer{color:var(--library-faint);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:26px 0 36px;font-size:.72rem;display:flex}.library-footer a{color:var(--library-muted);text-decoration:none}@media (width<=780px){.library-main,.library-footer{width:min(100% - 28px,680px)}.library-nav,.library-user{display:none}.library-main{padding-top:42px}}@media (width<=480px){.library-footer{flex-direction:column;align-items:start}}:is(.library-feature-card:has(.library-card-cover) .library-card-top,.library-course-card:has(.library-card-cover) .library-card-top){display:none}:is(.library-feature-card:has(.library-card-cover),.library-course-card:has(.library-card-cover)){padding-top:0}.library-course-card:has(.library-card-cover){padding:0 0 16px}.library-course-card:has(.library-card-cover)>:not(.library-card-cover){padding-left:16px;padding-right:16px}.library-course-card:has(.library-card-cover) .library-card-track{margin-top:14px}.library-course-card:has(.library-card-cover) .library-course-meta{padding-left:16px;padding-right:16px}.library-card-cover{border:1px solid var(--library-line);background:radial-gradient(circle at 20% 20%,#d1aa692e,#0000 45%),linear-gradient(145deg,#2a1a1d 0%,#141214 55%,#0d0c0e 100%);justify-content:space-between;align-items:flex-end;min-height:132px;margin:-1px -1px 0;padding:14px;display:flex;position:relative;overflow:hidden}.library-feature-card .library-card-cover{min-height:150px;margin:-20px -20px 16px}.library-card-cover>span{z-index:1;width:34px;height:34px;color:var(--library-gold);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0a0a0c73;border:1px solid #d1aa698c;place-items:center;font-family:IBM Plex Serif,Georgia,serif;display:grid;position:relative}.library-card-cover small{z-index:1;color:#f2ede5d1;letter-spacing:.08em;text-transform:uppercase;background:#0a0a0c6b;border:1px solid #ffffff14;padding:4px 8px;font-size:.72rem;position:relative}.library-card-cover.has-image{background-image:linear-gradient(180deg, #08070914 0%, #080709b8 100%), var(--course-cover-image);background-position:50%;background-size:cover}.library-card-cover.is-roadmap-cover{background:repeating-linear-gradient(-45deg,#ffffff08 0 8px,#0000 8px 16px),linear-gradient(145deg,#1a1718 0%,#121113 100%);min-height:96px}.library-card-cover.tone-power{--tone-accent:#c54d4c}.library-card-cover.tone-body{--tone-accent:#d1aa69}.library-card-cover.tone-rel{--tone-accent:#9a7bb8}.library-card-cover.tone-ritual{--tone-accent:#b07a4f}.library-card-cover.tone-edge{--tone-accent:#c46b7a}.library-card-cover.tone-safe{--tone-accent:#8f6b5d}.library-card-cover:not(.has-image):before{content:"";background:radial-gradient(circle, color-mix(in srgb, var(--tone-accent,var(--library-red)) 40%, transparent), transparent 70%);pointer-events:none;border-radius:999px;width:55%;height:70%;position:absolute;inset:auto -10% -30% auto}