.content-page{max-width:1160px;margin:0 auto;padding:36px 24px 72px}
.content-hero{text-align:center;max-width:760px;margin:14px auto 30px}
.content-kicker{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface);font-size:12px;font-weight:700;color:var(--accent-light);margin-bottom:14px}
.content-hero h1{font-size:clamp(32px,5vw,58px);line-height:1.02;letter-spacing:-2px;margin:0 0 13px}.content-hero h1 span{background:linear-gradient(110deg,var(--accent-light),#a78bfa,#22d3ee);-webkit-background-clip:text;background-clip:text;color:transparent}.content-hero p{font-size:15px;color:var(--text-2);line-height:1.65;margin:0 auto;max-width:660px}
.content-tools{display:flex;gap:12px;align-items:center;justify-content:space-between;margin:0 0 22px;flex-wrap:wrap}.content-filters{display:flex;gap:8px;flex-wrap:wrap}.filter-btn{border:1px solid var(--line);background:var(--surface);color:var(--text-2);padding:9px 14px;border-radius:999px;cursor:pointer;font:600 13px Inter,system-ui,sans-serif;transition:.18s}.filter-btn:hover{border-color:var(--line-strong);color:var(--text);transform:translateY(-1px)}.filter-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.content-count{font-size:12px;color:var(--muted)}
.content-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.content-card{position:relative;display:flex;flex-direction:column;min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:20px;overflow:hidden;color:var(--text);text-decoration:none;box-shadow:0 12px 32px rgba(0,0,0,.12);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}.content-card:hover{transform:translateY(-7px);border-color:var(--line-strong);box-shadow:0 22px 48px rgba(0,0,0,.22)}.content-card[hidden]{display:none}.content-card-image{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,var(--surface-2),#172554);overflow:hidden}.content-card-image img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s ease,filter .35s ease}.content-card:hover .content-card-image img{transform:scale(1.065);filter:saturate(1.08)}.content-card-fallback{width:100%;height:100%;display:grid;place-items:center;font-size:52px;background:radial-gradient(circle at 30% 25%,rgba(96,165,250,.2),transparent 42%),linear-gradient(135deg,#0f172a,#111827)}.content-badge{position:absolute;left:13px;top:13px;z-index:2;padding:6px 10px;border-radius:999px;background:rgba(2,6,23,.78);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.14);font-size:11px;font-weight:800;color:#fff}.content-star{position:absolute;right:13px;top:13px;z-index:2;width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:rgba(2,6,23,.75);color:#fbbf24;border:1px solid rgba(255,255,255,.14)}.content-card-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}.content-card-title{font-size:18px;line-height:1.25;font-weight:800;letter-spacing:-.35px;margin:0 0 8px;transform-origin:left center;transition:font-size .25s ease,transform .25s ease,color .2s}.content-card:hover .content-card-title{font-size:20px;color:var(--accent-light)}.content-card-summary{font-size:13.5px;line-height:1.58;color:var(--text-2);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.content-card-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:10px;color:var(--muted);font-size:11.5px}.open-hint{display:inline-flex;align-items:center;gap:6px;color:var(--accent-light);font-weight:700}.open-hint svg{transition:transform .2s}.content-card:hover .open-hint svg{transform:translateX(3px)}
.content-empty{text-align:center;padding:80px 20px;border:1px dashed var(--line);border-radius:22px;color:var(--muted);background:var(--surface)}
/* Envelope modal */
.content-modal{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:22px;background:rgba(2,6,23,.82);backdrop-filter:blur(12px);opacity:0;pointer-events:none;transition:opacity .28s ease}.content-modal.is-open{opacity:1;pointer-events:auto}.content-modal[hidden]{display:none}.modal-stage{position:relative;width:min(900px,96vw);height:min(760px,90vh);perspective:1200px}.modal-close{position:absolute;right:-5px;top:-5px;z-index:20;width:40px;height:40px;border:1px solid rgba(255,255,255,.18);border-radius:50%;background:#0b1220;color:#fff;font-size:24px;line-height:1;cursor:pointer;box-shadow:0 8px 24px rgba(0,0,0,.35)}.envelope{position:absolute;inset:36px 0 0;border-radius:24px;overflow:hidden;background:linear-gradient(145deg,#172554,#1e293b);border:1px solid rgba(255,255,255,.12);box-shadow:0 35px 90px rgba(0,0,0,.5)}.envelope-letter{position:absolute;left:5%;right:5%;top:9%;bottom:5%;z-index:5;background:var(--surface);border:1px solid var(--line-strong);border-radius:20px;padding:28px;overflow:auto;transform:translateY(56%) scale(.94);opacity:.75;transition:transform .62s cubic-bezier(.2,.8,.2,1) .18s,opacity .42s ease .18s;box-shadow:0 20px 55px rgba(0,0,0,.35)}.envelope-flap{position:absolute;z-index:8;left:0;right:0;top:0;height:47%;background:linear-gradient(165deg,#2563eb,#1d4ed8 72%);clip-path:polygon(0 0,100% 0,50% 100%);transform-origin:50% 0;backface-visibility:hidden;transition:transform .6s cubic-bezier(.2,.75,.2,1);filter:drop-shadow(0 12px 18px rgba(0,0,0,.22))}.envelope-pocket{position:absolute;z-index:6;inset:auto 0 0;height:48%;background:linear-gradient(150deg,#172554,#0f172a);clip-path:polygon(0 0,50% 58%,100% 0,100% 100%,0 100%);transition:opacity .35s ease .5s,transform .4s ease .45s}.content-modal.is-open .envelope-flap{transform:rotateX(180deg)}.content-modal.is-open .envelope-letter{transform:translateY(0) scale(1);opacity:1}.content-modal.is-open .envelope-pocket{opacity:.12;transform:translateY(45%);pointer-events:none}
.letter-head{display:grid;grid-template-columns:minmax(180px,36%) 1fr;gap:24px;align-items:start;margin-bottom:24px}.letter-image{aspect-ratio:16/10;border-radius:16px;overflow:hidden;background:var(--surface-2);border:1px solid var(--line)}.letter-image img{width:100%;height:100%;object-fit:cover}.letter-fallback{height:100%;display:grid;place-items:center;font-size:54px;background:linear-gradient(135deg,#172554,#111827)}.letter-type{display:inline-flex;padding:5px 10px;border-radius:999px;background:rgba(37,99,235,.13);color:var(--accent-light);font-size:11px;font-weight:800;margin-bottom:9px}.letter-title{font-size:clamp(24px,4vw,38px);line-height:1.07;letter-spacing:-1px;margin:0 0 10px}.letter-summary{color:var(--text-2);font-size:14px;line-height:1.62}.letter-body{font-size:15px;line-height:1.75;color:var(--text-2)}.letter-body h2,.letter-body h3{color:var(--text);margin:24px 0 9px}.letter-body h2{font-size:21px}.letter-body h3{font-size:18px}.letter-body p{margin:0 0 13px}.letter-body ul,.letter-body ol{padding-left:22px;margin:8px 0 16px}.letter-body a{color:var(--accent-light);text-decoration:underline;text-underline-offset:3px}.letter-body blockquote{margin:16px 0;padding:12px 16px;border-left:3px solid var(--accent);background:var(--surface-2);border-radius:0 10px 10px 0}.letter-body pre,.letter-body code{font-family:"JetBrains Mono",monospace}.letter-body pre{overflow:auto;padding:14px;background:#020617;border-radius:10px}.media-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:24px}.media-frame{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#000;border:1px solid var(--line)}.media-frame iframe,.media-frame video{width:100%;height:100%;border:0;display:block}.media-label{position:absolute;left:8px;bottom:8px;padding:4px 7px;border-radius:6px;background:rgba(0,0,0,.72);color:#fff;font-size:10px;font-weight:700;pointer-events:none}.letter-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.content-action{display:inline-flex;align-items:center;gap:8px;padding:11px 17px;border-radius:11px;background:var(--accent);color:#fff;font-weight:750;font-size:13.5px}.content-action:hover{background:var(--accent-2)}.item-meta{font-size:12px;color:var(--muted);margin-top:10px}
/* Standalone item */
.item-shell{max-width:900px;margin:0 auto;padding:34px 24px 72px}.item-paper{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow)}.item-back{display:inline-flex;margin-bottom:18px;color:var(--text-2);font-size:13px}.item-back:hover{color:var(--text)}
body.modal-open{overflow:hidden}
@media(max-width:900px){.content-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.letter-head{grid-template-columns:1fr}.letter-image{max-height:280px}.modal-stage{height:min(820px,92vh)}.media-grid{grid-template-columns:1fr}}
@media(max-width:620px){.content-page{padding:24px 14px 54px}.content-grid{grid-template-columns:1fr;gap:14px}.content-card:hover .content-card-title{font-size:19px}.content-tools{align-items:flex-start}.content-count{width:100%}.content-modal{padding:8px}.modal-stage{width:100%;height:96vh}.envelope{inset:28px 0 0;border-radius:18px}.envelope-letter{left:2.5%;right:2.5%;top:5%;bottom:2.5%;padding:18px;border-radius:15px}.envelope-flap{height:34%}.letter-title{font-size:27px}.item-shell{padding:20px 12px 50px}.item-paper{padding:18px;border-radius:18px}.media-grid{grid-template-columns:1fr}}
/* Library v2: bilingual UI, taxonomy and stats */
.library-lang{display:inline-flex;align-items:center;gap:3px;padding:3px;border:1px solid var(--line);border-radius:999px;background:var(--surface-2)}.library-lang a{min-width:34px;padding:5px 8px;border-radius:999px;text-align:center;font-size:11px;font-weight:800;color:var(--text-2)}.library-lang a.on{background:var(--accent);color:#fff}
.filter-block{display:grid;grid-template-columns:90px 1fr;gap:14px;align-items:flex-start;margin:0 0 12px}.filter-label{font-size:11px;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);padding-top:10px}.tag-filters .filter-btn{padding:7px 11px;font-size:12px}.card-taxonomy{display:flex;gap:6px;flex-wrap:wrap;margin:-1px 0 10px}.category-chip,.tag-chip,.item-tags span,.item-tags a,.letter-category{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;font-size:10.5px;font-weight:700}.category-chip,.letter-category{background:rgba(37,99,235,.12);color:var(--accent-light);border:1px solid rgba(96,165,250,.16)}.tag-chip,.item-tags span,.item-tags a{background:var(--surface-2);color:var(--text-2);border:1px solid var(--line)}.letter-category{margin-left:6px}.item-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}.item-tags a:hover{color:var(--accent-light);border-color:var(--accent)}.content-card-stats{display:flex;gap:12px;align-items:center;margin-top:auto;margin-bottom:10px;color:var(--muted);font-size:11.5px}.content-card-stats+.content-card-foot{margin-top:0}.secondary-action{background:var(--surface-2)!important;color:var(--text)!important;border:1px solid var(--line)!important}.secondary-action:hover{border-color:var(--line-strong)!important}.action-disabled{cursor:not-allowed;background:rgba(239,68,68,.12)!important;color:#fca5a5!important;border:1px solid rgba(239,68,68,.25)!important}.action-disabled:hover{background:rgba(239,68,68,.12)!important}
@media(max-width:760px){.filter-block{grid-template-columns:1fr;gap:4px}.filter-label{padding-top:0}.library-lang{order:3}.top-nav{flex-wrap:wrap}}