html{scroll-padding-top:calc(52px + var(--top-bar))}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--font-sans);background:var(--bg);color:var(--t);line-height:1.7;margin-top:var(--top-bar,0px)}
a{color:var(--cs-p);text-decoration:none}

/* === Header === */
header{position:sticky;top:var(--top-bar,0px);z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--bd);transition:background .3s,box-shadow .3s}
header.scrolled{background:rgba(255,255,255,.98);box-shadow:0 2px 20px rgba(0,0,0,.06)}
header .inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:14px 24px}
header .logo{font-family:var(--font-serif);color:var(--cs-p);text-decoration:none;display:flex;align-items:center;gap:8px}
header .logo-img{max-height:40px;max-width:200px;object-fit:contain;display:block}
header .logo-text-wrap{display:flex;flex-direction:column}
header .logo-name{font-size:18px;font-weight:900;line-height:1.2}
header .logo-sub{font-family:var(--font-sans);font-size:10px;color:var(--m);letter-spacing:1.5px;font-weight:400}
header nav{display:flex;gap:4px;align-items:center;flex:1;justify-content:center;flex-wrap:nowrap}
header nav a{padding:8px 14px;border-radius:var(--radius-sm);font-size:14px;color:var(--m);text-decoration:none;transition:.2s;font-weight:500;white-space:nowrap;flex-shrink:0}
header nav a:hover,header nav a.active{color:var(--cs-p);background:rgba(13,148,136,.06)}
header .nav-dropdown{position:relative}
header .cs-dd-arrow{font-size:10px;margin-left:2px;opacity:.7}
header .nav-dd-menu{position:absolute;top:100%;left:0;min-width:180px;background:#fff;border:1px solid var(--bd);border-radius:var(--radius-md);box-shadow:0 8px 24px rgba(0,0,0,.08);padding:8px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:.2s}
header .nav-dropdown:hover .nav-dd-menu,.nav-dropdown:focus-within .nav-dd-menu{opacity:1;visibility:visible;transform:translateY(0)}
header .nav-dd-menu a{display:block;padding:8px 12px;font-size:13px;color:var(--t);border-radius:6px}
header .nav-dd-menu a:hover{background:var(--bg);color:var(--cs-p)}

/* === Buttons === */
.btn{padding:12px 28px;border-radius:var(--radius-md);font-size:15px;font-weight:700;text-decoration:none;display:inline-block;transition:all .3s cubic-bezier(.16,1,.3,1);cursor:pointer;border:none}
.btn-primary{background:var(--cs-p);color:#fff;box-shadow:0 4px 14px rgba(0,0,0,.12)}
.btn-primary:hover{background:var(--cs-pd);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.18)}
.btn-outline{background:transparent;border:2px solid var(--cs-p);color:var(--cs-p)}
.btn-outline:hover{background:var(--cs-p);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:8px 18px;font-size:13px}

/* === Footer === */
footer{background:var(--cs-pd);color:rgba(255,255,255,.75);padding:48px 24px 16px}
footer .ft-inner{max-width:1200px;margin:0 auto}
footer .ft-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-bottom:32px}
footer h4{color:#fff;font-family:var(--font-serif);font-size:16px;margin-bottom:12px}
footer p,footer a{font-size:13px;color:rgba(255,255,255,.6);text-decoration:none;line-height:2;display:block}
footer a:hover{color:var(--cs-accent)}
footer .ft-beian{display:flex;gap:16px;flex-wrap:wrap;align-items:center;justify-content:center;padding:16px 0;border-top:1px solid rgba(255,255,255,.1);font-size:12px}
footer .ft-beian a{font-size:12px;display:inline}
footer .ft-bottom{text-align:center;font-size:12px;padding-top:8px;color:rgba(255,255,255,.4)}
footer .ft-bottom a{font-size:12px;display:inline;color:var(--cs-accent)}

/* === Cards === */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;max-width:1200px;margin:40px auto;padding:0 24px}
.card-grid .card{background:var(--card);border:1px solid var(--bd);border-radius:var(--radius-lg);overflow:hidden;transition:transform .25s,box-shadow .25s;text-decoration:none;color:var(--t)}
.card-grid .card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(0,0,0,.08);border-color:var(--cs-p)}
.card-grid .card img{width:100%;height:200px;object-fit:cover}
.card-grid .card .body{padding:18px}
.card-grid .card h3{font-size:16px;margin-bottom:8px}
.card-grid .card .meta{font-size:12px;color:var(--m)}
.badge{display:inline-block;padding:2px 10px;border-radius:12px;font-size:10px;font-weight:600;background:rgba(108,99,255,.08);color:var(--cs-p);margin-right:8px}

/* === Sections === */
.section-title{text-align:center;padding:48px 24px 16px;max-width:1200px;margin:0 auto}
.section-title h2{font-family:var(--font-serif);font-size:clamp(22px,3.5vw,30px);font-weight:800;margin-bottom:8px;color:var(--t)}
.section-title p{color:var(--m);max-width:600px;margin:0 auto;font-size:15px}

/* === Hamburger (桌面隐藏，手机显示) === */
.hamburger{display:none}