.help-workspace {
  position: relative;
  padding-bottom: 0;
  background:
    radial-gradient(circle at 22% 6%, rgba(96, 165, 250, .10), transparent 30%),
    radial-gradient(circle at 78% 12%, rgba(192, 132, 252, .08), transparent 28%),
    linear-gradient(180deg, rgba(9, 15, 31, .28), rgba(7, 11, 24, 0) 520px);
}
.help-workspace > .hero {
  display: block;
  width: 100%;
  max-width: none;
  min-height: 0;
  margin: 0;
  padding: 38px 54px 44px;
  background: transparent;
  text-align: left;
}
.help-brand {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 16px;
  margin: 0 auto 42px;
  color: inherit;
  text-decoration: none;
}
.help-brand img {
  width: 68px;
  height: 68px;
  flex: 0 0 auto;
  border-radius: 17px;
  object-fit: contain;
  box-shadow: 0 14px 34px rgba(10, 15, 34, .28);
}
.help-brand-copy { display: grid; gap: 7px; }
.help-brand-copy strong {
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: .02em;
  background: linear-gradient(90deg, #60a5fa, #a78bfa 52%, #e879f9);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.help-brand-copy small {
  color: #98a5c1;
  font-size: 16px;
  letter-spacing: .08em;
  text-align: center;
}
.help-hero-main {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(360px, 520px);
  align-items: end;
  gap: 48px;
  width: min(100%, 1120px);
  margin: 0 auto;
}
.help-kicker { color: #7db5ff; font-size: 12px; font-weight: 800; letter-spacing: .18em; }
.help-hero-copy h1 { margin: 8px 0 10px; color: #f5f7ff; font-size: clamp(38px, 4.4vw, 62px); line-height: 1.05; }
.help-hero-copy p { margin: 0; color: #9ca9c8; font-size: 16px; }
.help-guide-index-link { display: inline-flex; gap: 8px; margin-top: 16px; color: #91c3ff; font-size: 13px; font-weight: 700; text-decoration: none; }
.help-guide-index-link:hover { color: #c7e0ff; }
.help-search { display: flex; align-items: center; gap: 12px; height: 58px; padding: 0 16px; border: 1px solid #34415f; border-radius: 16px; background: rgba(13, 20, 39, .88); box-shadow: 0 20px 50px rgba(0, 0, 0, .2); }
.help-search > span { color: #81b8ff; font-size: 24px; }
.help-search input { min-width: 0; flex: 1; border: 0; outline: 0; background: transparent; color: #eef2ff; font: 500 15px/1.2 Inter, "PingFang SC", sans-serif; }
.help-search input::placeholder { color: #74809d; }
.help-search kbd { padding: 4px 8px; border: 1px solid #34415f; border-radius: 7px; color: #74809d; background: #151e34; font-family: inherit; }
.help-quick { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; padding: 22px 54px; border-top: 1px solid rgba(58, 71, 104, .46); border-bottom: 1px solid rgba(36, 45, 73, .72); }
.help-quick a { display: grid; grid-template-columns: 40px 1fr; column-gap: 12px; padding: 15px; border: 1px solid #293552; border-radius: 14px; background: #11192c; color: inherit; text-decoration: none; transition: transform .18s ease, border-color .18s ease; }
.help-quick a:hover { transform: translateY(-2px); border-color: #526ba5; }
.help-quick a > span { grid-row: 1 / 3; align-self: center; color: #7db5ff; font-size: 20px; font-weight: 800; }
.help-quick strong { color: #e8edfb; font-size: 14px; }
.help-quick small { margin-top: 4px; color: #7e8aa7; font-size: 12px; }
.help-body { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 38px; padding: 38px 54px 64px; }
.help-categories { position: sticky; top: 26px; align-self: start; }
.help-categories > strong { display: block; margin-bottom: 12px; color: #eef2ff; font-size: 14px; }
.help-categories nav { display: grid; gap: 5px; }
.help-categories nav button { display: flex; justify-content: space-between; width: 100%; padding: 11px 12px; border: 0; border-radius: 10px; background: transparent; color: #8996b5; text-align: left; cursor: pointer; }
.help-categories nav button:hover { background: #141d32; color: #cbd5e1; }
.help-categories nav button.is-active { background: #1c2c50; color: #9bc7ff; }
.help-categories nav b { color: #687693; font-size: 11px; }
.help-side-note { margin-top: 22px; padding: 15px; border: 1px solid #2c3854; border-radius: 13px; background: #11192c; }
.help-side-note span { color: #d6def0; font-size: 13px; font-weight: 700; }
.help-side-note p { margin: 6px 0 0; color: #7f8ba7; font-size: 12px; line-height: 1.65; }
.help-content-head { display: flex; justify-content: space-between; align-items: end; margin-bottom: 18px; }
.help-content-head span { color: #7db5ff; font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.help-content-head h2 { margin: 6px 0 0; color: #eef2ff; font-size: 24px; }
.help-content-head button { border: 0; background: transparent; color: #8fc1ff; cursor: pointer; }
.help-tutorial-list { display: grid; gap: 13px; }
.help-tutorial-card { scroll-margin-top: 20px; border: 1px solid #293552; border-radius: 16px; background: #11192c; overflow: hidden; }
.help-tutorial-card.is-featured { border-color: #526ca9; box-shadow: 0 0 0 1px rgba(96, 165, 250, .08); }
.help-tutorial-card summary { position: relative; padding: 20px 124px 20px 22px; list-style: none; cursor: pointer; }
.help-tutorial-card summary::-webkit-details-marker { display: none; }
.help-card-category { display: inline-block; margin-bottom: 8px; color: #8bbcff; font-size: 11px; font-weight: 700; }
.help-tutorial-card h3 { margin: 0 0 7px; color: #eef2ff; font-size: 17px; }
.help-tutorial-card summary p { margin: 0; color: #8794b1; font-size: 13px; line-height: 1.65; }
.help-card-toggle { position: absolute; top: 50%; right: 22px; color: #8cbfff; font-size: 12px; transform: translateY(-50%); }
.help-tutorial-card details[open] .help-card-toggle { font-size: 0; }
.help-tutorial-card details[open] .help-card-toggle::after { content: "收起步骤"; font-size: 12px; }
.help-card-detail { display: grid; grid-template-columns: minmax(180px, .7fr) minmax(320px, 1.3fr); gap: 18px 28px; padding: 24px 22px 25px; border-top: 1px solid #293552; background: rgba(8, 14, 28, .35); }
.help-card-detail section:nth-child(2) { grid-row: span 2; }
.help-card-detail h4 { margin: 0 0 12px; color: #cbd5e1; font-size: 13px; }
.help-card-detail ul { margin: 0; padding-left: 18px; color: #929fbc; font-size: 13px; line-height: 1.75; }
.help-checklist { list-style: "✓  "; }
.help-checklist li::marker { color: #55d6aa; }
.help-steps { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.help-steps li { display: grid; grid-template-columns: 28px 1fr; gap: 10px; align-items: start; }
.help-steps li > span { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; background: #20345e; color: #9bc7ff; font-size: 10px; font-weight: 800; }
.help-steps p { margin: 3px 0 0; color: #aeb9d0; font-size: 13px; line-height: 1.65; }
.help-tips { padding: 14px; border: 1px solid rgba(249, 115, 22, .18); border-radius: 12px; background: rgba(249, 115, 22, .06); }
.help-tips h4 { color: #f6ba75; }
.help-card-action { grid-column: 1 / -1; justify-self: start; color: #8dc1ff; font-size: 13px; font-weight: 700; text-decoration: none; }
.help-empty { min-height: 310px; padding-top: 70px; color: #7c89a5; text-align: center; }
.help-empty > span { font-size: 40px; }
.help-empty h3 { margin: 12px 0 7px; color: #cbd5e1; }
.help-empty p { margin: 0; font-size: 13px; }

@media (max-width: 1000px) {
  .help-workspace > .hero { padding: 34px 32px 34px; }
  .help-brand { margin-bottom: 34px; }
  .help-hero-main { grid-template-columns: 1fr; gap: 28px; }
  .help-quick { padding: 18px 32px; }
  .help-body { grid-template-columns: 190px minmax(0, 1fr); gap: 24px; padding: 30px 32px 54px; }
  .help-card-detail { grid-template-columns: 1fr; }
  .help-card-detail section:nth-child(2) { grid-row: auto; }
}

@media (max-width: 720px) {
  .help-workspace > .hero { min-height: 0; padding: 32px 20px 26px; }
  .help-brand { gap: 12px; margin-bottom: 30px; }
  .help-brand img { width: 50px; height: 50px; border-radius: 13px; }
  .help-brand-copy { gap: 5px; }
  .help-brand-copy strong { font-size: clamp(27px, 8.8vw, 34px); }
  .help-brand-copy small { font-size: 12px; letter-spacing: .04em; }
  .help-search { min-width: 0; height: 52px; }
  .help-quick { grid-template-columns: 1fr; padding: 16px 20px; }
  .help-body { grid-template-columns: 1fr; padding: 26px 20px 46px; }
  .help-categories { position: static; overflow: hidden; }
  .help-categories nav { display: flex; padding-bottom: 7px; overflow-x: auto; }
  .help-categories nav button { width: auto; flex: 0 0 auto; gap: 9px; }
  .help-side-note { display: none; }
  .help-tutorial-card summary { padding: 18px 20px 48px; }
  .help-card-toggle { top: auto; right: auto; bottom: 18px; left: 20px; transform: none; }
  .help-card-detail { padding: 20px; }
}