:root{--bg:#f7f8fc;--surface:#fff;--text:#172033;--muted:#697386;--line:#e6e9f0;--brand:#2563eb;--brand-soft:#eff4ff;--shadow:0 18px 50px rgba(24,39,75,.08)}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#f8faff 0,#f7f8fc 420px);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.75}a{color:inherit;text-decoration:none}
.site-header{max-width:1120px;margin:auto;padding:22px 28px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:800;font-size:1.15rem}.site-nav{display:flex;gap:8px}.site-nav a{padding:8px 14px;border-radius:9px;color:var(--muted);font-weight:600}.site-nav a:hover{background:var(--surface);color:var(--brand);box-shadow:0 4px 14px rgba(24,39,75,.06)}
main{max-width:1120px;margin:auto;padding:30px 28px 80px}.home-hero{position:relative;padding:68px 58px;margin:14px 0 34px;overflow:hidden;border:1px solid rgba(255,255,255,.9);border-radius:24px;background:linear-gradient(135deg,#eef4ff,#fff 58%,#f3f0ff);box-shadow:var(--shadow)}.home-hero:after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;right:-100px;top:-120px;background:rgba(37,99,235,.08)}.eyebrow{position:relative;z-index:1;margin:0 0 10px;color:var(--brand);font-size:.85rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.home-hero h1{position:relative;z-index:1;margin:0;font-size:clamp(2.4rem,5vw,4.4rem);line-height:1.12}.home-hero p{position:relative;z-index:1;max-width:680px;margin:18px 0 0;color:var(--muted);font-size:1.12rem}
.section-title{display:flex;align-items:center;justify-content:space-between;margin:0 0 14px}.section-title h2{margin:0;font-size:1.3rem}.section-title span{color:var(--muted);font-size:.88rem}.article-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.article-card-link{display:block;color:inherit}.article-card{position:relative;min-height:0;padding:10px;border:1px solid var(--line);border-radius:14px;background:var(--surface);transition:transform .18s ease,box-shadow .18s ease;display:flex;flex-direction:column}.article-card:has(.article-cover){padding:10px}.article-card-link:hover .article-card{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#cfd8e8}.article-card h3{margin:0;font-size:.95rem;line-height:1.3}.article-card-link:hover h3{color:var(--brand)}.article-card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:4px;padding-top:0;color:var(--muted);font-size:.72rem}.article-meta-inline{display:flex;align-items:center;gap:7px;white-space:nowrap}.view-count{display:inline-flex;align-items:center;gap:3px}.read-more{color:var(--brand);font-weight:700;white-space:nowrap;font-size:.7rem}
.article-cover{position:relative;left:auto;top:auto;width:100%;height:72px;margin:0 0 6px;overflow:hidden;background:#f0f3f8;border-radius:9px}.article-cover img{display:block;width:100%;height:100%;object-fit:cover;object-position:center}.empty{grid-column:1/-1;padding:42px;border:1px dashed var(--line);border-radius:16px;text-align:center;color:var(--muted);background:var(--surface)}
.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{width:min(100%,420px);padding:28px;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow)}.auth-card h1{margin-top:0}.auth-card form{display:grid;gap:14px}.auth-card label{display:grid;gap:6px}.auth-card input{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px}.auth-card p{margin-bottom:0}.auth-error{padding:10px;border-radius:8px;background:#fff1f1;color:#b42318}
.auth-success{padding:10px;border-radius:8px;background:#ecfdf3;color:#067647}
.profile-page{max-width:760px;margin:42px auto;padding:0 20px}.profile-card{padding:30px;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow)}.profile-name{font-size:24px;font-weight:800}.profile-meta{color:var(--muted)}.profile-card form{display:grid;gap:14px}.profile-card label{display:grid;gap:8px}.profile-card textarea{width:100%;box-sizing:border-box;padding:12px;border:1px solid var(--line);border-radius:9px;font:inherit;resize:vertical}.profile-link{font-weight:700}.logout-form{display:inline;margin:0}.logout-form button{border:0;background:transparent;color:var(--muted);font:inherit;cursor:pointer;padding:8px 10px}.logout-form button:hover{color:var(--brand)}
@media(max-width:1000px){.article-list{grid-template-columns:repeat(3,minmax(0,1fr))}}
.more-articles{display:flex;justify-content:flex-end;margin-top:18px}.more-articles a{padding:9px 15px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--brand);font-weight:700}.more-articles a:hover{box-shadow:0 8px 22px rgba(24,39,75,.08)}
.article-shell{max-width:820px;margin:auto}.article-header{padding:48px 0 30px}.article-header h1{margin:0 0 18px;font-size:clamp(2.25rem,5vw,3.7rem);line-height:1.16}.article-summary{margin:0;max-width:720px;color:var(--muted);font-size:1.15rem}.article-meta{display:flex;gap:10px;align-items:center;margin-top:22px;color:var(--muted);font-size:.92rem}.article-meta:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand)}.article-cover-detail{display:block;width:100%;height:240px;object-fit:contain;background:#f0f3f8;margin:0 auto 30px;border-radius:22px}.article-content{padding:44px 52px;border:1px solid var(--line);border-radius:22px;background:var(--surface);box-shadow:var(--shadow);font-size:1.06rem}.article-content h1,.article-content h2,.article-content h3{margin-top:1.8em;line-height:1.3}.article-content h2{font-size:1.65rem}.article-content p,.article-content ul,.article-content ol{margin:1.15em 0}.article-content :not(pre)>code{padding:2px 7px;border-radius:6px;background:#f0f3f8;color:#334155;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.9em}.article-content blockquote{margin:1.6em 0;padding:8px 0 8px 20px;border-left:4px solid #93c5fd;color:#526071}.article-content img{display:block;max-width:100%;height:auto;margin:1.6em auto;border-radius:14px;box-shadow:0 12px 30px rgba(24,39,75,.12)}.article-content table{width:100%;border-collapse:collapse;margin:1.5em 0}.article-content th,.article-content td{padding:10px;border:1px solid var(--line);text-align:left}.tag{display:inline-block;padding:4px 10px;border-radius:999px;background:var(--brand-soft);color:#3159b9;font-size:.82rem}
@media(max-width:700px){.site-header{padding:16px 18px}.site-nav a{padding:7px 10px}main{padding:18px 18px 54px}.home-hero{padding:42px 28px;border-radius:18px}.article-list{grid-template-columns:1fr}.article-card{min-height:112px;padding:16px}.article-card:has(.article-cover){padding-left:126px}.article-cover{position:absolute;left:16px;top:16px;width:94px;height:76px;margin:0;border-radius:10px}.article-card h3{font-size:1rem}.article-card p{-webkit-line-clamp:1;font-size:.92rem}.article-card-footer{margin-top:9px}.article-header{padding:32px 0 22px}.article-cover-detail{height:180px;margin-bottom:24px;border-radius:16px}.article-content{padding:28px 22px;border-radius:16px}}