:root {
  --lp-primary: #177dff;
  --lp-primary-hover: #005cd1;
  --lp-text: #333;
  --lp-muted: #888;
  --lp-background: #f0f2f5;
}
.lp-body { margin: 0; color: var(--lp-text); background: var(--lp-background); font: 14px/1.5 "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
.lp-body *, .lp-header *, .lp-footer *, .lp-services * { box-sizing: border-box; }
.lp-body a, .lp-header a, .lp-footer a, .lp-services a { text-decoration: none; }
.lp-body button, .lp-body input, .lp-body select, .lp-header button, .lp-footer button, .lp-services button { font: inherit; }
.lp-body button, .lp-header button, .lp-footer button, .lp-services button { cursor: pointer; }
.lp-body button:disabled { cursor: default; }
.lp-body button, .lp-header button, .lp-footer button, .lp-services button { -webkit-tap-highlight-color: transparent; }
.lp-body [hidden], .lp-services [hidden] { display: none !important; }
.lp-body a:focus-visible, .lp-body button:focus-visible, .lp-body input:focus-visible, .lp-body select:focus-visible,
.lp-header a:focus-visible, .lp-header button:focus-visible, .lp-footer a:focus-visible, .lp-footer button:focus-visible, .lp-services button:focus-visible, .lp-services a:focus-visible { outline: 3px solid #70b2ff; outline-offset: 3px; }
.lp-container { width: min(1200px, calc(100% - 48px)); margin-right: auto; margin-left: auto; }
.lp-icon { display: block; flex: none; width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.lp-sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
.lp-skip-link { position: fixed; z-index: 1000; top: -80px; left: 16px; padding: 12px 20px; color: #fff; background: var(--lp-primary); border-radius: 4px; }
.lp-skip-link:focus { top: 12px; }
.lp-header { position: relative; z-index: 20; color: var(--lp-text); background: #fff; font: 14px/1.5 "PingFang SC", "Microsoft YaHei", Arial, sans-serif; box-shadow: 0 2px 8px rgb(0 0 0 / 4%); }
.lp-header-top { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 120px; }
.lp-brand { display: flex; align-items: center; gap: 18px; min-width: 0; color: #333; }
.lp-brand-logo { flex: none; display: block; width: 64px; height: 64px; object-fit: contain; }
.lp-brand-logo-custom { width: auto; max-width: 340px; }
.lp-brand-copy { display: flex; flex-direction: column; min-width: 0; }
.lp-brand-name { max-width: 630px; font-size: 32px; font-weight: 600; line-height: 1.4; letter-spacing: 1px; overflow-wrap: anywhere; }
.lp-brand-slogan { margin-top: 2px; color: #888; font-size: 14px; letter-spacing: 2px; }
.lp-user-links { display: flex; align-items: center; flex: none; gap: 16px; white-space: nowrap; }
.lp-user-links a { color: #333; font-size: 16px; }
.lp-user-links a:hover { color: var(--lp-primary); }
.lp-user-divider { display: block; width: 1px; height: 16px; background: #d9d9d9; }
.lp-learning-link { display: flex; align-items: center; gap: 8px; }
.lp-learning-link .lp-icon { width: 20px; height: 20px; color: #666; }
.lp-username { max-width: 100px; overflow: hidden; text-overflow: ellipsis; }
.lp-user-links .lp-logout { color: #888; font-size: 14px; }
.lp-nav { background: var(--lp-primary); }
.lp-nav-items { display: flex; align-items: stretch; height: 56px; }
.lp-nav-link { display: flex; align-items: center; justify-content: center; flex: 1 1 0; min-width: 0; color: #fff; font-size: 22px; font-weight: 500; line-height: 1.25; transition: background-color .2s ease; }
.lp-nav-link:hover, .lp-nav-link.is-active { color: #fff; background: var(--lp-primary-hover); }
.lp-menu-toggle { display: none; padding: 6px; color: #333; background: none; border: 0; }
.lp-main { min-height: calc(100vh - 372px); }
.lp-catalog { padding-top: 24px; padding-bottom: 36px; }
.lp-filter-form { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin: 0 0 24px; }
.lp-filter-options { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; }
.lp-select-wrap { position: relative; }
.lp-select-wrap select { display: block; width: 176px; height: 40px; padding: 0 36px 0 16px; color: #333; background: #fff; border: 1px solid #d9d9d9; border-radius: 4px; outline-offset: 3px; font-size: 16px; cursor: pointer; appearance: none; }
.lp-select-wrap select:hover { border-color: var(--lp-primary); }
.lp-select-chevron { position: absolute; right: 13px; top: 15px; width: 12px; height: 12px; fill: none; stroke: #8c8c8c; stroke-width: 1.4; pointer-events: none; }
.lp-search-box { display: flex; align-items: center; width: 300px; height: 40px; margin-left: auto; overflow: hidden; background: #fff; border: 1px solid #d9d9d9; border-radius: 4px; }
.lp-search-box:focus-within { border-color: var(--lp-primary); box-shadow: 0 0 0 2px rgb(23 125 255 / 10%); }
.lp-search-box input { display: block; width: 100%; min-width: 0; height: 38px; padding: 0 12px; color: #333; border: 0; background: none; outline: 0 !important; font-size: 14px; }
.lp-search-box input::placeholder { color: #b3b3b3; }
.lp-search-box button { display: flex; align-items: center; justify-content: center; flex: none; width: 42px; height: 38px; padding: 0; border: 0; background: none; color: #8c8c8c; }
.lp-search-box button:hover { color: var(--lp-primary); background: #f4f8fe; }
.lp-search-box .lp-icon { width: 19px; height: 19px; }
.lp-filter-summary { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin: -4px 0 20px; color: #888; font-size: 13px; }
.lp-filter-summary > span { padding: 2px 10px; background: #fff; border: 1px solid #e2e5e9; border-radius: 3px; }
.lp-filter-summary a { margin-left: 4px; color: var(--lp-primary); }
.lp-filter-summary a:hover { text-decoration: underline; }
.lp-course-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.lp-course-card { overflow: hidden; background: #fff; border-radius: 8px; box-shadow: 0 6px 16px rgb(0 0 0 / 3%); transition: transform .25s ease, box-shadow .25s ease; }
.lp-course-card:hover { transform: translateY(-4px); box-shadow: 0 6px 16px rgb(0 0 0 / 3%), 0 4px 16px rgb(0 0 0 / 8%); }
.lp-course-link { display: block; color: #333; }
.lp-course-cover { position: relative; width: 100%; aspect-ratio: 282 / 158; overflow: hidden; background: #eef3f9; }
.lp-course-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }
.lp-course-duration { position: absolute; bottom: 0; left: 0; width: 100%; height: 32px; padding: 0 16px; color: #fff; background: linear-gradient(180deg, transparent, rgb(0 0 0 / 60%)); font-size: 14px; font-weight: 500; line-height: 32px; text-align: right; }
.lp-course-info { padding: 16px; }
.lp-course-title { width: 100%; height: 24px; margin: 0; overflow: hidden; color: #333; font-size: 16px; font-weight: 600; line-height: 24px; white-space: nowrap; text-overflow: ellipsis; }
.lp-course-card:hover .lp-course-title { color: var(--lp-primary); }
.lp-course-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 24px; margin-top: 8px; }
.lp-course-price { flex: 0 0 auto; color: #e03b00; font-size: 16px; font-weight: 500; line-height: 24px; white-space: nowrap; }
.lp-course-source { min-width: 0; overflow: hidden; color: #888; font-size: 12px; line-height: 24px; white-space: nowrap; text-overflow: ellipsis; }
.lp-course-enter { color: #999; }
.lp-course-enter .lp-icon { width: 21px; height: 21px; }
.lp-course-card:hover .lp-course-enter { color: var(--lp-primary); }
.lp-empty { display: flex; align-items: center; justify-content: center; flex-direction: column; min-height: 460px; padding: 60px 20px; text-align: center; }
.lp-empty-icon { width: 104px; height: 90px; margin-bottom: 14px; }
.lp-empty p { margin: 0; color: #888; font-size: 16px; }
.lp-pagination { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 16px; margin-top: 32px; color: #666; font-size: 14px; }
.lp-result-count { white-space: nowrap; }
.lp-page-links { display: flex; align-items: center; gap: 8px; }
.lp-page-links > a, .lp-page-links > span { display: flex; align-items: center; justify-content: center; min-width: 32px; height: 32px; padding: 0 6px; color: #333; background: #fff; border: 1px solid #d9d9d9; border-radius: 3px; }
.lp-page-links > a:hover { color: var(--lp-primary); border-color: var(--lp-primary); }
.lp-page-links > .is-current { color: var(--lp-primary); border-color: var(--lp-primary); }
.lp-page-links > .is-disabled { color: #c5c5c5; background: #f8f8f8; cursor: default; }
.lp-page-links > .lp-page-ellipsis { min-width: 22px; padding: 0; color: #999; background: none; border: 0; }
.lp-page-arrow .lp-icon { width: 16px; height: 16px; }
.lp-page-jump { display: flex; align-items: center; gap: 8px; }
.lp-page-jump label { margin: 0; font-weight: 400; }
.lp-page-jump input { width: 50px; height: 32px; padding: 0 3px; color: #333; background: #fff; border: 1px solid #d9d9d9; border-radius: 3px; text-align: center; appearance: textfield; }
.lp-page-jump input::-webkit-inner-spin-button, .lp-page-jump input::-webkit-outer-spin-button { margin: 0; appearance: none; }
.lp-page-jump button { height: 32px; padding: 0 10px; color: #666; background: #fff; border: 1px solid #d9d9d9; border-radius: 3px; }
.lp-page-jump button:hover { color: var(--lp-primary); border-color: var(--lp-primary); }
.lp-button { padding: 8px 16px; color: #fff; background: var(--lp-primary); border: 1px solid var(--lp-primary); border-radius: 4px; }
.lp-hero { position: relative; display: flex; align-items: center; min-height: 210px; margin: -4px 0 24px; padding: 40px; overflow: hidden; color: #164575; background: #dfeeff; border-radius: 8px; }
.lp-hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.lp-hero > div { position: relative; }
.lp-hero h2 { margin: 0 0 12px; font-size: 28px; }
.lp-hero p { margin: 0; font-size: 16px; }
.lp-footer { margin: 0; color: #949498; background: #20242c; font: 14px/1.5 "PingFang SC", "Microsoft YaHei", Arial, sans-serif; }
.lp-footer-top { display: flex; align-items: center; justify-content: space-between; gap: 32px; min-height: 144px; padding-top: 24px; padding-bottom: 24px; }
.lp-footer-info { min-width: 0; }
.lp-footer-info p { margin: 4px 0; color: #949498; font-size: 14px; line-height: 22px; }
.lp-footer-info .lp-footer-owner { color: #c5c5c8; }
.lp-footer-links { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; margin-bottom: 14px; }
.lp-footer-links a { color: #c5c5c8; font-size: 14px; }
.lp-footer a:hover { color: #fff; }
.lp-footer-entry { display: flex; align-items: center; flex: none; gap: 20px; }
.lp-footer-learning, .lp-footer-mobile { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; padding: 0; color: #b8bdc8; background: #313741; border: 0; border-radius: 50%; }
.lp-footer-learning .lp-icon, .lp-footer-mobile .lp-icon { width: 27px; height: 27px; }
.lp-footer-mobile:hover { color: #fff; }
.lp-footer-bottom { background: #171b22; }
.lp-footer-legal { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 8px 20px; min-height: 52px; padding-top: 12px; padding-bottom: 12px; color: #949498; }
.lp-footer-legal a { color: #949498; }
.lp-help-page { padding-top: 24px; padding-bottom: 48px; }
.lp-breadcrumb { margin-bottom: 24px; color: #888; font-size: 14px; }
.lp-breadcrumb a { color: #666; }
.lp-breadcrumb a:hover { color: var(--lp-primary); }
.lp-help-intro { padding: 36px; background: #fff; border-radius: 8px; }
.lp-help-intro h1 { margin: 0 0 20px; color: #333; font-size: 28px; font-weight: 500; }
.lp-help-text { max-width: 880px; color: #666; font-size: 16px; line-height: 1.9; }
.lp-help-links { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 28px; }
.lp-help-links .lp-button { display: inline-block; color: #fff; }
.lp-help-links .lp-button:hover { background: var(--lp-primary-hover); border-color: var(--lp-primary-hover); }
.lp-help-link { color: var(--lp-primary); }
.lp-help-link:hover { text-decoration: underline; }
.lp-help-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 24px; }
.lp-help-card { padding: 28px; color: #666; background: #fff; border-radius: 8px; }
.lp-help-card > .lp-icon { width: 32px; height: 32px; margin-bottom: 16px; color: var(--lp-primary); }
.lp-help-card h2 { margin: 0 0 12px; font-size: 18px; font-weight: 500; }
.lp-help-card p { margin: 12px 0; line-height: 1.8; overflow-wrap: anywhere; }
.lp-help-qr { display: block; width: 140px; max-width: 100%; height: auto; margin-top: 20px; }
.lp-services { position: fixed; z-index: 40; top: 43%; right: 16px; width: 72px; border-radius: 5px; box-shadow: 0 2px 12px rgb(0 0 0 / 7%); font: 12px/1.5 "PingFang SC", "Microsoft YaHei", Arial, sans-serif; }
.lp-service-item { position: relative; }
.lp-service-action { display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 6px; width: 72px; min-height: 76px; padding: 10px 4px; color: #666; background: #fff; border: 0; border-bottom: 1px solid #f0f0f0; font-size: 12px; text-align: center; }
.lp-service-action:hover, .lp-service-action[aria-expanded="true"] { color: var(--lp-primary); }
.lp-service-action .lp-icon { width: 25px; height: 25px; }
.lp-service-item:first-child .lp-service-action { border-radius: 5px 5px 0 0; }
.lp-service-item:nth-child(3) .lp-service-action { border-radius: 0 0 5px 5px; }
.lp-service-panel { position: absolute; top: 0; right: 84px; width: 230px; padding: 20px; color: #666; background: #fff; border: 1px solid #edf0f4; border-radius: 6px; box-shadow: 0 4px 24px rgb(0 0 0 / 10%); font-size: 14px; line-height: 1.7; overflow-wrap: anywhere; }
.lp-service-panel::after { position: absolute; top: 24px; right: -7px; width: 12px; height: 12px; content: ""; background: #fff; border-top: 1px solid #edf0f4; border-right: 1px solid #edf0f4; transform: rotate(45deg); }
.lp-service-panel strong { color: #333; font-size: 16px; font-weight: 500; }
.lp-service-panel p { margin: 8px 0 0; }
.lp-service-qr { display: block; max-width: 100%; height: auto; margin: 12px auto; }
.lp-back-top { margin-top: 8px; border: 0; border-radius: 5px; }
@media (min-width: 1281px) and (max-width: 1410px) { .lp-services { right: 5px; width: 60px; } .lp-service-action { width: 60px; } }
@media (max-width: 1280px) { .lp-services { right: 8px; width: 56px; } .lp-service-action { width: 56px; min-height: 68px; font-size: 11px; } .lp-service-panel { right: 68px; } }
@media (max-width: 1024px) { .lp-container { width: calc(100% - 48px); } .lp-services { display: none; } .lp-header-top { height: 104px; gap: 16px; } .lp-brand-logo { width: 56px; height: 56px; } .lp-brand-logo-custom { width: auto; max-width: 220px; } .lp-brand-name { font-size: 26px; } .lp-brand-slogan { letter-spacing: 1px; } .lp-nav-link { font-size: 20px; } .lp-user-links { gap: 12px; } .lp-user-links a { font-size: 14px; } .lp-course-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; } .lp-filter-form { gap: 12px; } .lp-filter-options { gap: 12px; } .lp-select-wrap select { width: 160px; } .lp-search-box { width: 260px; } }
@media (max-width: 780px) { .lp-container { width: calc(100% - 32px); } .lp-header-top { height: 88px; } .lp-brand { gap: 12px; } .lp-brand-logo { width: 46px; height: 46px; } .lp-brand-logo-custom { width: auto; max-width: 150px; } .lp-brand-name { font-size: 23px; letter-spacing: 0; } .lp-brand-slogan { font-size: 12px; letter-spacing: 0; } .lp-user-links { gap: 9px; } .lp-user-links .lp-username, .lp-user-links .lp-logout, .lp-learning-link .lp-icon { display: none; } .lp-menu-toggle { display: block; } .lp-nav-items { height: 48px; } .lp-nav-link { font-size: 16px; } .lp-course-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; } .lp-filter-form { align-items: stretch; gap: 12px; } .lp-filter-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; width: 100%; } .lp-select-wrap select { width: 100%; padding-left: 12px; padding-right: 25px; font-size: 14px; } .lp-select-chevron { right: 9px; } .lp-search-box { width: 100%; } .lp-catalog { padding-top: 20px; padding-bottom: 28px; } .lp-empty { min-height: 350px; } .lp-footer-top { gap: 20px; } .lp-pagination { gap: 12px; } .lp-page-jump { display: none; } .lp-hero { min-height: 160px; padding: 24px; } .lp-hero h2 { font-size: 24px; } .lp-help-intro { padding: 24px; } .lp-help-grid { grid-template-columns: 1fr; gap: 16px; } .lp-help-card { padding: 24px; } }
@media (max-width: 540px) { .lp-header-top { height: 80px; gap: 8px; } .lp-brand { gap: 9px; } .lp-brand-logo { width: 40px; height: 40px; } .lp-brand-logo-custom { width: auto; max-width: 84px; } .lp-brand-name { max-width: 190px; font-size: 19px; line-height: 1.3; } .lp-brand-slogan { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 10px; } .lp-user-links { gap: 8px; } .lp-user-links a { font-size: 12px; } .lp-user-links .lp-user-divider { display: none; } .lp-user-links .lp-learning-link { max-width: 60px; font-size: 12px; white-space: normal; } .lp-menu-toggle { padding: 4px; } .lp-nav-items { min-height: 44px; height: auto; flex-wrap: wrap; } .lp-nav-link { flex-basis: 33.333%; min-height: 44px; font-size: 15px; } .lp-header.lp-js-ready .lp-nav:not(.is-open) { display: none; } .lp-course-grid { gap: 12px; } .lp-course-info { padding: 12px; } .lp-course-title { font-size: 14px; } .lp-course-meta { margin-top: 6px; } .lp-course-price { font-size: 14px; } .lp-course-duration { height: 26px; padding: 0 10px; line-height: 26px; font-size: 12px; } .lp-course-enter .lp-icon { width: 18px; height: 18px; } .lp-empty p { font-size: 14px; } .lp-footer-top { align-items: flex-start; padding-top: 24px; padding-bottom: 24px; } .lp-footer-entry { display: none; } .lp-footer-links { gap: 10px 20px; margin-bottom: 12px; } .lp-footer-info p, .lp-footer-links a, .lp-footer-legal { font-size: 12px; } .lp-footer-legal { justify-content: flex-start; gap: 5px 12px; } .lp-pagination { gap: 10px; margin-top: 24px; font-size: 12px; } .lp-page-links { gap: 5px; } .lp-page-links > a, .lp-page-links > span { min-width: 28px; height: 28px; } .lp-filter-summary { font-size: 12px; } }
@media (prefers-reduced-motion: reduce) { .lp-course-card, .lp-nav-link { transition: none; } .lp-course-card:hover { transform: none; } }