:root{--text-color: #333;--highlight-color: #f075ae;--apple-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif}.zju-page[data-astro-cid-7izqg4qw]{min-height:100vh;padding:8rem 2rem 4rem;max-width:1400px;margin:0 auto;font-family:var(--apple-font);position:relative;overflow-x:hidden}#meteors-container[data-astro-cid-7izqg4qw]{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;overflow:hidden}.page-header[data-astro-cid-7izqg4qw],.course-grid[data-astro-cid-7izqg4qw]{position:relative;z-index:10}.meteor{position:absolute;height:2px;background:linear-gradient(90deg,#a18cd1,#a18cd100);opacity:0;transform:rotate(-45deg);filter:drop-shadow(0 0 6px rgba(161,140,209,.8));animation-name:shower;animation-timing-function:linear}.meteor:after{content:"";position:absolute;width:4px;height:4px;border-radius:50%;background:#a18cd1;left:0;top:50%;transform:translateY(-50%);box-shadow:0 0 10px 2px #a18cd180}@keyframes shower{0%{opacity:0;transform:rotate(-45deg) translate(0)}10%{opacity:.7}to{opacity:0;transform:rotate(-45deg) translate(-1000px)}}.back-button[data-astro-cid-7izqg4qw]{position:fixed;top:100px;left:2rem;z-index:100;display:flex;align-items:center;gap:8px;padding:12px 20px;background:#fff0f5b3;backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);border:1px solid rgba(240,117,174,.3);border-radius:50px;box-shadow:0 8px 32px #f075ae1a,inset 0 0 0 1px #ffffff4d;color:#f075ae;font-size:.95rem;font-weight:500;text-decoration:none;transition:all .3s ease;cursor:pointer}.back-button[data-astro-cid-7izqg4qw] svg[data-astro-cid-7izqg4qw]{stroke:currentColor}.back-button[data-astro-cid-7izqg4qw]:hover{background:#fff0f5e6;box-shadow:0 8px 32px #f075ae33,0 0 0 2px #f075ae4d;transform:translate(-4px);text-decoration:none}@media(max-width:768px){.back-button[data-astro-cid-7izqg4qw]{top:80px;left:1rem;padding:10px 16px;font-size:.9rem}}.page-header[data-astro-cid-7izqg4qw]{text-align:center;margin-bottom:4rem;animation:fadeInDown .8s ease-out}.page-title[data-astro-cid-7izqg4qw]{font-size:3rem;font-weight:700;margin-bottom:.5rem;background:linear-gradient(120deg,#f075ae,#a18cd1);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.page-subtitle[data-astro-cid-7izqg4qw]{color:#666;font-size:1.1rem;margin-bottom:2rem}.search-container[data-astro-cid-7izqg4qw]{position:relative;max-width:600px;margin:0 auto}#course-search[data-astro-cid-7izqg4qw]{width:100%;padding:18px 60px 18px 30px;font-size:1.15rem;border:1px solid rgba(240,117,174,.3);border-radius:50px;outline:none;transition:all .4s ease;background:#fff0f5b3;backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);box-shadow:0 8px 32px #f075ae1a,inset 0 0 0 1px #ffffff4d;color:#444}#course-search[data-astro-cid-7izqg4qw]::placeholder{color:#967}#course-search[data-astro-cid-7izqg4qw]:focus{background:#fff0f5e6;box-shadow:0 8px 32px #f075ae33,0 0 0 2px #f075ae4d;transform:translateY(-2px) scale(1.01)}.search-icon[data-astro-cid-7izqg4qw]{position:absolute;right:25px;top:50%;transform:translateY(-50%);color:#f075ae;pointer-events:none;opacity:.9}.course-grid[data-astro-cid-7izqg4qw]{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:30px;padding:20px}@media(min-width:1200px){.course-grid[data-astro-cid-7izqg4qw]{grid-template-columns:repeat(4,1fr)}}@media(min-width:900px)and (max-width:1199px){.course-grid[data-astro-cid-7izqg4qw]{grid-template-columns:repeat(3,1fr)}}.course-card[data-astro-cid-7izqg4qw]{text-decoration:none;color:inherit;perspective:1000px;display:block;animation:fadeInUp .8s ease-out backwards}.course-card[data-astro-cid-7izqg4qw]:nth-child(n){animation-delay:.1s}.card-content[data-astro-cid-7izqg4qw]{background:#ffffffd9;border-radius:20px;overflow:hidden;box-shadow:0 10px 20px #0000000d,0 2px 6px #0000000d;transition:all .4s cubic-bezier(.175,.885,.32,1.275);height:100%;display:flex;flex-direction:column;border:1px solid rgba(255,255,255,.8);transform-style:preserve-3d;backdrop-filter:blur(10px)}.course-card[data-astro-cid-7izqg4qw]:hover .card-content[data-astro-cid-7izqg4qw]{transform:translateY(-10px) rotateX(2deg) rotateY(2deg);box-shadow:0 20px 40px #f075ae33,0 12px 12px #0000001a;border-color:#f075ae80;background:#fffffff2}.card-image-wrapper[data-astro-cid-7izqg4qw]{height:160px;width:100%;position:relative;overflow:hidden;background:#f5f5f7}.card-cover-image[data-astro-cid-7izqg4qw]{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.course-card[data-astro-cid-7izqg4qw]:hover .card-cover-image[data-astro-cid-7izqg4qw]{transform:scale(1.05)}.card-image-placeholder[data-astro-cid-7izqg4qw]{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.placeholder-icon[data-astro-cid-7izqg4qw]{font-size:5rem;color:#fffc;font-weight:700;transform:rotate(-15deg);user-select:none}.card-info[data-astro-cid-7izqg4qw]{padding:1.5rem;flex:1;display:flex;flex-direction:column}.card-info[data-astro-cid-7izqg4qw] h2[data-astro-cid-7izqg4qw]{font-size:1.4rem;margin:0 0 .5rem;color:#333;font-weight:600}.card-info[data-astro-cid-7izqg4qw] p[data-astro-cid-7izqg4qw]{font-size:.95rem;color:#666;line-height:1.5;margin-bottom:1.5rem;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.tags[data-astro-cid-7izqg4qw]{display:flex;flex-wrap:wrap;gap:8px}.tag[data-astro-cid-7izqg4qw]{font-size:.8rem;padding:4px 12px;background:#f075ae1a;color:#d13075;border-radius:20px;font-weight:500}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}