:root{--ink:#111315;--muted:#697079;--line:#dfe2e5;--paper:#fff;--soft:#f5f6f7;--accent:#20a667}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--soft);color:var(--ink);font-family:"Helvetica Neue","Microsoft YaHei",Arial,sans-serif}a{color:inherit}.lp-header{position:sticky;top:0;z-index:30;height:76px;display:flex;align-items:center;background:#050505;color:#fff}.lp-header-inner{width:min(1240px,calc(100% - 40px));margin:auto;display:flex;align-items:center;gap:38px}.lp-brand{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:900;text-decoration:none;white-space:nowrap}.lp-brand img{height:40px;width:auto;filter:drop-shadow(0 2px 6px rgba(0,0,0,.45))}.lp-nav{display:flex;gap:28px;margin-left:auto}.lp-nav a{text-decoration:none;color:#d6d6d6}.lp-nav a.active,.lp-nav a:hover{color:#fff}.lp-account{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 18px;border:1px solid #fff;border-radius:4px;text-decoration:none;font-weight:700}.lp-hero{background:#050505;color:#fff;min-height:370px;display:flex;align-items:center;overflow:hidden}.lp-hero-inner{width:min(1240px,calc(100% - 40px));margin:auto;position:relative;padding:72px 0}.lp-eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#9ea5aa}.lp-hero h1{max-width:700px;margin:18px 0;font-size:clamp(42px,5vw,70px);line-height:1.04}.lp-hero p{max-width:650px;margin:0;color:#c2c6ca;font-size:18px;line-height:1.65}.lp-hero-lines{position:absolute;right:-120px;bottom:-180px;width:560px;height:420px;border:1px solid #3b3f43;transform:rotate(31deg);border-radius:48%}.lp-layout{width:min(1240px,calc(100% - 40px));margin:0 auto;padding:50px 0 90px;display:grid;grid-template-columns:250px minmax(0,1fr);gap:46px}.lp-sidebar{align-self:start;position:sticky;top:108px}.lp-breadcrumb{padding-bottom:22px;border-bottom:1px solid var(--line);color:var(--muted)}.lp-search{position:relative;margin-top:32px}.lp-search input{width:100%;padding:15px 16px 15px 44px;border:1px solid var(--line);border-radius:4px;background:#fff;font:inherit}.lp-search svg{position:absolute;left:15px;top:15px;width:20px;fill:none;stroke:#111;stroke-width:1.8}.lp-filter-title{display:flex;align-items:center;gap:10px;margin:30px 0 18px;font-weight:800}.lp-filter{padding:23px 0;border-top:1px solid var(--line)}.lp-filter strong{display:block;margin-bottom:13px}.lp-filter label{display:block;margin:12px 0;color:#333;cursor:pointer}.lp-filter input{width:17px;height:17px;margin:0 9px 0 0;vertical-align:-3px}.lp-content-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:26px}.lp-content-head h2{margin:0;font-size:32px}.lp-muted{color:var(--muted);font-size:14px}.lp-course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px}.lp-card{min-height:390px;display:flex;flex-direction:column;padding:28px 29px;background:#fff;border:1px solid #dadde0;border-top:5px solid #111;border-radius:4px;transition:transform .2s,box-shadow .2s}.lp-card:hover{transform:translateY(-3px);box-shadow:0 13px 28px rgba(0,0,0,.11)}.lp-chip{align-self:flex-start;padding:6px 11px;border:1px solid #111;border-radius:4px;font-size:13px}.lp-rating{margin:26px 0 10px;font-size:14px}.lp-star{color:#f5a623}.lp-card h3{margin:0;font-size:21px;line-height:1.4}.lp-summary{color:var(--muted);font-size:14px;line-height:1.65}.lp-meta{margin-top:auto;padding-top:19px;border-top:1px solid #d6d6d6;display:grid;gap:9px;font-size:14px}.lp-button{display:inline-flex;align-items:center;justify-content:center;align-self:flex-start;margin-top:20px;padding:11px 17px;border:1px solid #111;border-radius:4px;background:#111;color:#fff;text-decoration:none;font:700 14px inherit;cursor:pointer}.lp-button.light{background:#fff;color:#111}.lp-empty{padding:70px 25px;border:1px dashed #bbb;background:#fff;text-align:center;color:var(--muted)}.lp-toast{position:fixed;right:25px;top:92px;z-index:80;display:none;padding:13px 18px;background:#111;color:#fff;border-radius:5px;box-shadow:0 8px 28px rgba(0,0,0,.2)}
.pc-shell{width:min(1240px,calc(100% - 40px));margin:36px auto 90px;display:grid;grid-template-columns:250px minmax(0,1fr);gap:30px}.pc-side{align-self:start;position:sticky;top:106px;padding:25px 18px;background:#111;color:#fff;border-radius:8px}.pc-user{padding:4px 8px 22px;border-bottom:1px solid #333}.pc-user b{display:block;font-size:19px}.pc-user span{display:block;margin-top:6px;color:#aaa;font-size:13px}.pc-menu{display:grid;gap:6px;margin-top:18px}.pc-menu button,.pc-menu a{width:100%;padding:12px 13px;border:0;border-radius:5px;background:transparent;color:#bbb;text-align:left;text-decoration:none;font:600 14px inherit;cursor:pointer}.pc-menu button.active,.pc-menu button:hover,.pc-menu a:hover{background:#fff;color:#111}.pc-main{min-width:0}.pc-welcome{padding:34px;background:linear-gradient(125deg,#16191c,#30353a);color:#fff;border-radius:8px;margin-bottom:24px}.pc-welcome h1{margin:0 0 9px;font-size:32px}.pc-welcome p{margin:0;color:#bbc0c4}.pc-panel{padding:30px;background:#fff;border:1px solid var(--line);border-radius:8px}.pc-panel-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px}.pc-panel h2{margin:0;font-size:27px}.pc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.pc-card{padding:21px;border:1px solid var(--line);border-radius:6px}.pc-card h3{margin:8px 0;font-size:18px}.pc-progress{height:8px;margin:15px 0;background:#eceeef;border-radius:10px;overflow:hidden}.pc-progress i{display:block;height:100%;background:#111}.pc-form{display:grid;grid-template-columns:1fr 1fr;gap:15px}.pc-form label{font-size:13px;font-weight:700}.pc-form input{width:100%;margin-top:7px;padding:12px;border:1px solid #ccd0d4;border-radius:4px;font:inherit}.pc-form .wide{grid-column:1/-1}.pc-actions{display:flex;gap:10px;flex-wrap:wrap}.pc-path{padding:18px 0;border-bottom:1px solid var(--line)}.pc-path:last-child{border-bottom:0}.pc-grade{display:inline-grid;place-items:center;width:48px;height:48px;border-radius:50%;background:#111;color:#fff;font-weight:900}.pc-loading{padding:80px 20px;text-align:center;color:var(--muted)}
/* 学员中心 · 白底素雅风格 */
.pc-side{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:0 2px 10px rgba(0,0,0,.04)}
.pc-user{border-bottom:1px solid var(--line)}
.pc-user span{color:var(--muted)}
.pc-menu button,.pc-menu a{color:#555}
.pc-menu button:hover,.pc-menu a:hover{background:#f3f4f5;color:#111}
.pc-menu button.active{background:#111;color:#fff}
.pc-welcome{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:0 2px 10px rgba(0,0,0,.04)}
.pc-welcome p{color:var(--muted)}
@media(max-width:1000px){.lp-course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lp-layout{grid-template-columns:220px minmax(0,1fr)}.pc-shell{grid-template-columns:220px minmax(0,1fr)}}@media(max-width:720px){.lp-header{height:66px}.lp-header-inner{width:calc(100% - 28px)}.lp-nav{display:none}.lp-brand{font-size:18px}.lp-account{margin-left:auto;min-height:38px;padding:0 12px}.lp-hero{min-height:310px}.lp-hero-inner{width:calc(100% - 34px);padding:54px 0}.lp-hero h1{font-size:39px}.lp-hero p{font-size:16px}.lp-layout{width:calc(100% - 30px);padding-top:28px;grid-template-columns:1fr;gap:28px}.lp-sidebar{position:static}.lp-filter-wrap{display:grid;grid-template-columns:1fr 1fr;gap:18px}.lp-course-grid{grid-template-columns:1fr}.lp-content-head{align-items:start;flex-direction:column}.pc-shell{width:calc(100% - 28px);margin-top:22px;grid-template-columns:1fr}.pc-side{position:static;padding:14px}.pc-user{display:none}.pc-menu{display:flex;overflow:auto;margin:0}.pc-menu button,.pc-menu a{width:auto;min-width:max-content}.pc-grid,.pc-form{grid-template-columns:1fr}.pc-form .wide{grid-column:auto}.pc-panel{padding:22px}.pc-welcome{padding:25px}.pc-welcome h1{font-size:26px}}