.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden;padding-top:22px}
.hero::after{content:"";position:absolute;inset:auto 0 0 0;height:40%;background:linear-gradient(180deg,transparent,rgba(5,15,45,.35));pointer-events:none}
.rings{position:absolute;width:880px;height:880px;right:-260px;top:-230px;fill:none;stroke:var(--sky);stroke-width:1.5;opacity:.22}
.rings circle{stroke-dasharray:2500;stroke-dashoffset:2500;animation:draw 2.2s var(--ease) forwards}
.rings circle:nth-child(2){animation-delay:.15s}
.rings circle:nth-child(3){animation-delay:.3s;stroke-dasharray:6 10;stroke-dashoffset:0;animation:spin 90s linear infinite;transform-origin:400px 400px;opacity:.8}
.rings circle:nth-child(4){animation-delay:.45s}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes spin{to{transform:rotate(360deg)}}

.hero-top{display:flex;justify-content:space-between;align-items:center;position:relative;z-index:2}
.brand-mini{font-size:.9rem;color:var(--sky);font-weight:600}
.lock-btn{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:10px;background:rgba(255,255,255,.1);color:#fff;text-decoration:none;font-weight:600;font-size:.9rem;transition:background .2s}
.lock-btn:hover{background:rgba(255,255,255,.2)}

.hero-main{display:grid;grid-template-columns:auto 1fr;gap:clamp(28px,5vw,64px);align-items:center;padding:clamp(36px,6vw,64px) 0 clamp(40px,6vw,64px);position:relative;z-index:2}
.seal{width:clamp(140px,19vw,220px);aspect-ratio:1;border-radius:50%;background:#fff;padding:5px;box-shadow:0 0 0 10px rgba(163,216,244,.12),0 30px 60px -25px rgba(0,0,0,.7);animation:seal 1.2s var(--ease) both}
.seal img{width:100%;height:100%;display:block}
@keyframes seal{from{opacity:0;transform:scale(.55) rotate(-60deg)}}
.school{margin:0;display:flex;flex-direction:column;color:var(--sky);font-weight:600;font-size:1.05rem;line-height:1.35;animation:up .8s var(--ease) .25s both}
.school span:last-child{color:rgba(255,255,255,.75);font-weight:500}
.hero h1{font-family:var(--display);font-weight:800;font-size:clamp(3rem,8.4vw,6.4rem);line-height:.9;letter-spacing:-.035em;margin:16px 0 22px}
.hero h1 span{display:block;animation:up .9s var(--ease) both}
.hero h1 span:nth-child(1){animation-delay:.35s}
.hero h1 span:nth-child(2){animation-delay:.45s;color:var(--sky)}
@keyframes up{from{opacity:0;transform:translateY(28px)}}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px;animation:up .8s var(--ease) .6s both}
.hero-chips span{border:1px solid rgba(163,216,244,.4);border-radius:999px;padding:4px 13px;font-size:.88rem;font-weight:600}

.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.14);position:relative;z-index:2}
.hero-stats div{padding:18px 0 22px;border-right:1px solid rgba(255,255,255,.1);padding-left:20px}
.hero-stats div:first-child{padding-left:0}
.hero-stats div:last-child{border-right:0}
.hero-stats b{display:block;font-family:var(--display);font-size:1.9rem;line-height:1.05;font-weight:700}
.hero-stats span{font-size:.84rem;color:rgba(255,255,255,.66)}

.toolbar{padding:26px 0 6px}
.search{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:0 16px;height:50px;transition:border-color .2s,box-shadow .2s}
.search:focus-within{border-color:var(--navy);box-shadow:0 0 0 4px rgba(18,46,99,.12)}
.search input{border:0;background:none;outline:none;flex:1;height:100%}
.search svg{flex:none;color:var(--muted)}

.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:40px 0 20px}
.sec-head h2{font-family:var(--display);font-size:1.55rem;letter-spacing:-.015em;margin:0}
.sec-head span{color:var(--muted);font-size:.9rem}

.recent{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}
.rec{display:flex;align-items:center;gap:12px;text-align:left;background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--c);border-radius:12px;padding:10px 12px;transition:transform .2s var(--ease),border-color .2s}
.rec:hover{transform:translateY(-2px);border-color:var(--c)}
.rec .rm{min-width:0}
.rec b{display:block;font-size:.93rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rec small{color:var(--muted);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:40px 26px}
.folder{position:relative;aspect-ratio:4/3.05;border:0;background:none;padding:0;text-align:left;perspective:1000px;opacity:0;animation:drop .7s var(--ease) forwards;animation-delay:calc(var(--i)*70ms + .45s)}
@keyframes drop{from{opacity:0;transform:translateY(-26px) rotate(-2deg)}to{opacity:1;transform:none}}
.folder .back{position:absolute;inset:16px 0 0 0;background:var(--c);filter:brightness(.72);border-radius:4px 14px 14px 14px}
.folder .tab{position:absolute;top:0;left:0;height:22px;padding:0 14px;border-radius:10px 10px 0 0;background:var(--c);filter:brightness(.72);color:#fff;font-size:.72rem;font-weight:700;display:flex;align-items:center}
.folder .tab i{font-style:normal;filter:brightness(1.4)}
.paper{position:absolute;left:14px;right:14px;top:30px;bottom:12px;background:#FBFBFD;border-radius:6px;transition:transform .5s var(--ease);box-shadow:0 1px 2px rgba(20,24,50,.15)}
.paper::before{content:"";position:absolute;left:14px;right:40%;top:14px;height:6px;border-radius:3px;background:#DADEEA;box-shadow:0 14px 0 #E6E9F1,0 28px 0 #E6E9F1}
.paper.p2{left:22px;right:8px;transform:rotate(2deg)}
.folder .front{position:absolute;inset:36px 0 0 0;background:var(--c);border-radius:12px;padding:18px 18px 16px;display:flex;flex-direction:column;justify-content:space-between;color:#fff;transform-origin:50% 100%;transition:transform .55s var(--ease),box-shadow .55s var(--ease);box-shadow:0 10px 24px -14px rgba(10,14,40,.55)}
.folder .front::before{content:"";position:absolute;inset:0;border-radius:inherit;background:linear-gradient(180deg,rgba(255,255,255,.14),rgba(255,255,255,0) 40%);pointer-events:none}
.folder h3{font-family:var(--display);font-weight:700;font-size:1.28rem;line-height:1.12;margin:0;letter-spacing:-.01em;text-wrap:balance}
.folder .foot{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:.82rem;font-weight:600}
.dots{display:flex;gap:3px}
.dots i{width:7px;height:7px;border-radius:2px;background:rgba(255,255,255,.28)}
.dots i.f{background:#fff}
.dots i.now{box-shadow:0 0 0 1.5px var(--sky)}
.folder:hover .front,.folder:focus-visible .front{transform:rotateX(-24deg);box-shadow:0 26px 30px -18px rgba(10,14,40,.6)}
.folder:hover .paper.p1,.folder:focus-visible .paper.p1{transform:translateY(-22px) rotate(-2deg)}
.folder:hover .paper.p2,.folder:focus-visible .paper.p2{transform:translateY(-12px) rotate(3deg)}
.folder:focus-visible{outline:none}
.folder:focus-visible .front{outline:3px solid var(--ink);outline-offset:3px}

.results{padding:20px 0 20px}
.results h2{font-family:var(--display);font-size:1.3rem;margin:0 0 14px}
.res{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin-bottom:8px;transition:border-color .2s}
.res:hover{border-color:var(--ink)}
.res small{color:var(--muted);display:block}

.site-foot{margin-top:80px;padding:26px 0 34px;border-top:1px solid var(--line);color:var(--muted);font-size:.88rem}