/* 启航者课程详情页：所有规则均使用 course-profile 命名空间，避免污染现有页面。 */

.course-profile-body {
  background: #F5F7FA;
}

.course-profile-page {
  min-height: 70vh;
  color: var(--ink);
}

.course-profile-top {
  padding-top: 24px;
}

.course-profile-hero {
  display: grid;
  grid-template-columns: 404px minmax(0, 1fr);
  gap: 32px;
  min-height: 288px;
  padding: 24px;
  background: var(--white);
  border: 1px solid rgba(15, 54, 122, .08);
  border-radius: 14px;
  box-shadow: 0 10px 32px rgba(15, 54, 122, .06);
}

.course-profile-cover {
  position: relative;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  align-self: center;
  border-radius: 10px;
  background: #E9EEF8;
}

.course-profile-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(145deg, rgba(15, 54, 122, 0) 54%, rgba(15, 54, 122, .2));
}

.course-profile-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.course-profile-summary {
  display: flex;
  min-width: 0;
  padding: 3px 8px 2px 0;
  flex-direction: column;
  align-items: flex-start;
}

.course-profile-category-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 17px;
}

.course-profile-category {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 11px;
  border-radius: 999px;
  color: var(--brand-blue);
  background: #E9EEF8;
  font-size: 13px;
  font-weight: 700;
}

.course-profile-format {
  color: var(--ink-3);
  font-size: 13px;
}

.course-profile-summary h1 {
  max-width: 640px;
  font-size: clamp(25px, 2.05vw, 31px);
  line-height: 1.28;
  letter-spacing: -.025em;
}

.course-profile-intro {
  max-width: 650px;
  margin-top: 14px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.8;
}

.course-profile-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  width: 100%;
  margin-top: auto;
  padding-top: 18px;
}

.course-profile-action-buttons {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  max-width: 100%;
  align-items: center;
  gap: 12px;
}

.course-profile-primary-action {
  flex-shrink: 0;
  white-space: nowrap;
  min-width: 0;
  min-height: 34px;
  padding: 0 13px;
  border-radius: 6px;
  font-size: 13px;
  box-shadow: 0 2px 7px rgba(136, 29, 34, .16);
}

.course-profile-actions > .qhz-course-trial-note {
  flex: 1 1 260px;
  min-width: 0;
  margin: 0;
}

.course-profile-primary-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 11px rgba(136, 29, 34, .18);
}

.course-profile-actions .course-access-wecom {
  min-height: 34px;
  padding: 0 13px;
  border-radius: 6px;
  border-color: var(--brand-red);
  color: var(--brand-red);
  background: #fff;
  font-size: 13px;
}

.course-profile-actions .course-access-wecom:hover {
  color: #fff;
  background: var(--brand-red);
}

.course-profile-actions .course-access-wecom.course-profile-get-course,
.qhz-course-media-gate .course-access-wecom.course-profile-get-course {
  color: #fff;
  border-color: var(--brand-red);
  background: var(--brand-red);
}

.course-profile-actions .course-access-wecom.course-profile-get-course:hover,
.qhz-course-media-gate .course-access-wecom.course-profile-get-course:hover {
  color: #fff;
  background: #b80f20;
}

.course-profile-login-note {
  color: #7b8798;
  font-size: 12px;
  line-height: 20px;
  white-space: nowrap;
}

.course-profile-login-note a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
}

.course-profile-login-note a:hover { text-decoration: underline; }
.course-profile-login-note a:focus-visible { outline: 3px solid rgba(4,75,199,.28); outline-offset: 3px; }

.qhz-course-media-gate {
  margin-top: 24px;
  padding: 20px;
  border: 1px solid #d8e2f1;
  border-left: 4px solid var(--brand-red);
  border-radius: 10px;
  background: #f8fafd;
}

.qhz-course-media-gate strong { color: var(--brand-blue); }
.qhz-course-media-gate p { margin: 7px 0 14px; color: var(--ink-3); line-height: 1.75; }

.course-profile-related-heading a svg,
.course-profile-outline-list a svg {
  transition: transform .2s var(--ease);
}

.course-profile-related-heading a:hover svg,
.course-profile-outline-list a:hover svg {
  transform: translateX(3px);
}

.course-profile-breadcrumb {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 62px;
  color: var(--ink-3);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
}

.course-profile-breadcrumb a {
  flex: 0 0 auto;
}

.course-profile-breadcrumb a:hover {
  color: var(--brand-bright-blue);
}

.course-profile-breadcrumb b {
  overflow: hidden;
  color: var(--ink-2);
  font-weight: 600;
  text-overflow: ellipsis;
}

.course-profile-content-section {
  padding-bottom: 72px;
}

.course-profile-layout {
  display: grid;
  grid-template-columns: minmax(0, 838px) minmax(300px, 1fr);
  align-items: start;
  gap: 24px;
}

.course-profile-main-card,
.course-profile-related {
  min-width: 0;
  background: var(--white);
  border: 1px solid rgba(15, 54, 122, .08);
  border-radius: 12px;
  box-shadow: 0 8px 26px rgba(15, 54, 122, .05);
}

.course-profile-tabs {
  position: sticky;
  top: 68px;
  z-index: 45;
  display: flex;
  height: 54px;
  padding: 0 30px;
  gap: 34px;
  align-items: stretch;
  border-bottom: 1px solid var(--line);
  border-radius: 12px 12px 0 0;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.course-profile-tab {
  position: relative;
  padding: 0 2px;
  border: 0;
  color: var(--ink-3);
  background: transparent;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.course-profile-tab::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--brand-bright-blue);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .22s var(--ease);
}

.course-profile-tab:hover,
.course-profile-tab.is-active {
  color: var(--brand-blue);
}

.course-profile-tab.is-active::after {
  transform: scaleX(1);
}

.course-profile-panel {
  padding: 36px 32px 40px;
}

.course-profile-panel[hidden] {
  display: none !important;
}

.course-profile-section + .course-profile-section {
  margin-top: 48px;
}

.course-profile-positioning {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 28px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

.course-profile-eyebrow {
  color: var(--brand-bright-blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
}

.course-profile-section-copy h2,
.course-profile-section-heading h2,
.course-profile-outline-heading h2,
.course-profile-output h2 {
  margin-top: 5px;
  font-size: 22px;
  line-height: 1.42;
  letter-spacing: -.02em;
}

.course-profile-section-copy > p {
  margin-top: 13px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.9;
}

.course-profile-section-heading {
  max-width: 660px;
}

.course-profile-audience-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.course-profile-audience-list li {
  position: relative;
  min-height: 100px;
  padding: 22px 18px 18px;
  overflow: hidden;
  border: 1px solid #DCE4EF;
  border-radius: 10px;
  background: #F8FAFD;
}

.course-profile-audience-list li > span {
  display: block;
  width: 28px;
  height: 3px;
  margin-bottom: 16px;
  border-radius: 999px;
  background: var(--brand-green);
}

.course-profile-audience-list p {
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.65;
}

.course-profile-focus-list {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.course-profile-focus-list li {
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr);
  gap: 18px;
  padding: 21px 4px;
  border-bottom: 1px solid var(--line);
}

.course-profile-focus-list li > span {
  color: var(--brand-bright-blue);
  font-size: 13px;
  font-weight: 800;
}

.course-profile-focus-list h3,
.course-profile-outline-list h3 {
  font-size: 16px;
  line-height: 1.45;
}

.course-profile-focus-list p,
.course-profile-outline-list p {
  margin-top: 4px;
  color: var(--ink-3);
  font-size: 14px;
  line-height: 1.7;
}

.course-profile-output {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 27px 28px;
  border-radius: 12px;
  color: var(--white);
  background: var(--brand-blue);
}

.course-profile-output .course-profile-eyebrow {
  color: #C9D9F2;
}

.course-profile-output h2 {
  color: var(--white);
}

.course-profile-output p:last-child {
  margin-top: 8px;
  color: #D9E4F4;
  font-size: 13px;
}

.course-profile-output > svg {
  flex: 0 0 auto;
  color: var(--brand-gold);
}

.course-profile-consult-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 40px;
  padding: 24px 26px;
  border: 1px solid #D8E2F1;
  border-left: 4px solid var(--brand-red);
  border-radius: 10px;
  background: #F8FAFD;
}

.course-profile-consult-strip p {
  font-weight: 800;
}

.course-profile-consult-strip span {
  display: block;
  margin-top: 4px;
  color: var(--ink-3);
  font-size: 13px;
}

.course-profile-consult-strip .btn {
  flex: 0 0 auto;
}

.course-profile-outline-heading {
  padding-bottom: 14px;
  color: var(--ink-3);
  font-size: 13px;
}

.course-profile-outline-heading > p:last-child {
  margin-top: 10px;
  color: var(--ink-3);
  font-size: 13px;
}

.course-profile-outline-list {
  border-top: 1px solid var(--line);
}

.course-profile-outline-list li {
  display: block;
  min-height: 0;
  padding: 0;
  border: 0;
}

.course-profile-outline-index {
  display: inline-flex;
  width: 24px;
  height: 24px;
  align-items: center;
  justify-content: center;
  border-radius: 5px;
  color: var(--brand-blue);
  background: #E9EEF8;
  font-size: 12px;
  font-weight: 800;
}

/* Course directory hierarchy: preserve the four semantic levels without
   turning each nested chapter into another visually heavy card. */
.qhz-course-outline .qhz-course-section {
  border-radius: 10px;
  box-shadow: none;
}

.qhz-course-outline .qhz-course-section--level-1 {
  border-color: rgba(15, 54, 122, .16);
}

.qhz-course-outline .qhz-course-section--level-1 > summary {
  background: #f8faff;
}

.qhz-course-outline .qhz-course-section > summary {
  position: relative;
  grid-template-columns: minmax(24px, max-content) minmax(0, 1fr) auto;
  gap: 10px;
  min-height: 48px;
  padding: 10px 34px 10px 14px;
}

.qhz-course-outline .qhz-course-section > summary strong { font-size: 14px; line-height: 1.5; overflow-wrap: anywhere; }
.qhz-course-outline .qhz-course-section > summary .course-profile-outline-index { width: auto; min-width: 24px; padding: 0 4px; font-variant-numeric: tabular-nums; }
.qhz-course-outline .qhz-course-section > summary small { font-size: 12px; white-space: nowrap; }
.qhz-course-outline .qhz-course-section > summary::after {
  position: absolute; right: 15px; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); content: "";
}
.qhz-course-outline .qhz-course-section[open] > summary::after { transform: rotate(225deg); }
.qhz-course-outline .qhz-course-section > summary:focus-visible { outline: 2px solid var(--brand-bright-blue); outline-offset: -3px; }
.qhz-course-outline .qhz-course-section .course-profile-outline-list { padding: 0; list-style: none; }
.qhz-course-outline .course-profile-outline-list .qhz-course-lesson-row {
  display: grid; grid-template-columns: 24px minmax(0, 1fr) auto; gap: 10px; align-items: center; min-height: 66px; padding: 12px 14px; color: var(--ink); text-decoration: none;
}
.qhz-course-outline .qhz-course-lesson-icon { display: grid; place-items: center; color: var(--brand-bright-blue); }
.qhz-course-outline .qhz-course-lesson-icon svg { display: block; }
.qhz-course-outline .qhz-course-lesson-copy { min-width: 0; }
.qhz-course-outline .qhz-course-lesson-copy h3 { margin: 0; font-size: 14px; font-weight: 600; line-height: 1.55; overflow-wrap: anywhere; }
.qhz-course-outline .qhz-course-lesson-copy p { margin: 3px 0 0; color: var(--ink-3); font-size: 12px; line-height: 1.5; }
.qhz-course-outline .course-profile-outline-list .qhz-course-lesson-action { display: inline-flex; align-items: center; gap: 6px; color: var(--brand-bright-blue); font-size: 12px; font-weight: 600; white-space: nowrap; }
.qhz-course-outline .course-profile-outline-list a.qhz-course-lesson-row:hover { background: #f6f9fe; }
.qhz-course-outline .course-profile-outline-list a.qhz-course-lesson-row:focus-visible { outline: 2px solid var(--brand-bright-blue); outline-offset: -3px; background: #f6f9fe; }
.qhz-course-outline .course-profile-outline-list .is-locked .qhz-course-lesson-icon { color: var(--ink-3); }
.qhz-course-outline .course-profile-outline-list .is-completed .qhz-course-lesson-icon { color: #218252; }

.qhz-course-outline .qhz-outline-children {
  position: relative;
  margin: 4px 10px 10px 24px;
  padding-left: 16px;
}

.qhz-course-outline .qhz-outline-children::before {
  position: absolute;
  top: 0;
  bottom: 8px;
  left: 0;
  width: 1px;
  background: #cbd9ee;
  content: "";
}

.qhz-course-outline .qhz-course-section--level-2,
.qhz-course-outline .qhz-course-section--level-3,
.qhz-course-outline .qhz-course-section--level-4 {
  margin: 7px 0 !important;
}

.qhz-course-outline .qhz-course-section--level-2 {
  border-left: 3px solid #7ea8e8 !important;
}

.qhz-course-outline .qhz-course-section--level-3 {
  border-left: 3px solid #8bbd45 !important;
  background: #fbfcf8;
}

.qhz-course-outline .qhz-course-section--level-4 {
  border-left: 3px dashed #e0b846 !important;
  background: #fffdf7;
}

.qhz-course-outline .qhz-course-section--level-2 > summary,
.qhz-course-outline .qhz-course-section--level-3 > summary,
.qhz-course-outline .qhz-course-section--level-4 > summary {
  min-height: 48px;
  padding-top: 8px;
  padding-bottom: 8px;
}

.course-profile-related {
  position: sticky;
  top: 88px;
  padding: 26px 24px 28px;
}

.course-profile-related-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.course-profile-related-heading p {
  color: var(--brand-bright-blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
}

.course-profile-related-heading h2 {
  margin-top: 3px;
  font-size: 20px;
}

.course-profile-related-heading a {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: 2px;
  color: var(--brand-bright-blue);
  font-size: 12px;
  font-weight: 700;
}

.course-profile-related-list {
  display: grid;
  gap: 22px;
  padding-top: 22px;
}

.course-profile-related-item {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 12px;
  min-width: 0;
  align-items: center;
}

.course-profile-related-item img {
  width: 108px;
  height: 72px;
  border-radius: 7px;
  object-fit: contain;
  object-position: center;
  background: #E9EEF8;
}

.course-profile-related-item span {
  min-width: 0;
}

.course-profile-related-item strong {
  display: -webkit-box;
  overflow: hidden;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.course-profile-related-item small {
  display: -webkit-box;
  overflow: hidden;
  margin-top: 7px;
  color: var(--ink-3);
  font-size: 12px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.course-profile-related-item img,
.course-profile-related-item strong {
  transition: transform .24s var(--ease), color .2s var(--ease);
}

.course-profile-related-item:hover img {
  transform: translateY(-2px);
}

.course-profile-related-item:hover strong {
  color: var(--brand-bright-blue);
}

@media (max-width: 1099px) {
  .course-profile-hero {
    grid-template-columns: minmax(290px, 39%) minmax(0, 1fr);
    gap: 26px;
  }

  .course-profile-cover {
    align-self: center;
  }

  .course-profile-layout {
    grid-template-columns: 1fr;
  }

  .course-profile-related {
    position: static;
  }

  .course-profile-related-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
}

@media (max-width: 768px) {
  .course-profile-top {
    padding-top: 12px;
  }

  .course-profile-top > .container,
  .course-profile-layout.container {
    padding-right: 14px;
    padding-left: 14px;
  }

  .course-profile-hero {
    display: block;
    min-height: 0;
    padding: 0;
    overflow: hidden;
    border-radius: 12px;
  }

  .course-profile-cover {
    width: 100%;
    border-radius: 0;
  }

  .course-profile-summary {
    padding: 19px 18px 21px;
  }

  .course-profile-category-row {
    gap: 8px;
    margin-bottom: 12px;
  }

  .course-profile-category {
    min-height: 26px;
    padding: 3px 9px;
    font-size: 12px;
  }

  .course-profile-format {
    font-size: 12px;
  }

  .course-profile-summary h1 {
    font-size: 23px;
    line-height: 1.36;
  }

  .course-profile-intro {
    margin-top: 10px;
    font-size: 14px;
    line-height: 1.75;
  }

  .course-profile-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    margin-top: 18px;
    padding-top: 0;
    gap: 10px;
  }

  .course-profile-action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .course-profile-action-buttons > .btn,
  .course-profile-action-buttons > .course-access-wecom {
    width: auto;
    min-width: 0;
    min-height: 44px;
    justify-content: center;
    padding-right: 12px;
    padding-left: 12px;
    white-space: nowrap;
  }

  .course-profile-primary-action {
    min-width: 0;
  }

  .course-profile-breadcrumb {
    min-height: 50px;
    gap: 7px;
    font-size: 12px;
  }

  .course-profile-breadcrumb a:nth-of-type(3),
  .course-profile-breadcrumb a:nth-of-type(3) + span {
    display: none;
  }

  .course-profile-content-section {
    padding-bottom: 38px;
  }

  .course-profile-layout {
    gap: 14px;
  }

  .course-profile-main-card,
  .course-profile-related {
    border-radius: 11px;
  }

  .course-profile-tabs {
    top: 68px;
    height: 50px;
    padding: 0 18px;
    gap: 30px;
    border-radius: 11px 11px 0 0;
  }

  .course-profile-tab {
    font-size: 14px;
  }

  .course-profile-panel {
    padding: 27px 18px 28px;
  }

  .course-profile-section + .course-profile-section {
    margin-top: 36px;
  }

  .course-profile-positioning {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-bottom: 28px;
  }

  .course-profile-section-copy h2,
  .course-profile-section-heading h2,
  .course-profile-outline-heading h2,
  .course-profile-output h2 {
    font-size: 19px;
    line-height: 1.5;
  }

  .course-profile-section-copy > p {
    margin-top: 10px;
    font-size: 14px;
    line-height: 1.85;
  }

  .course-profile-audience-list {
    grid-template-columns: 1fr;
    gap: 9px;
    margin-top: 16px;
  }

  .course-profile-audience-list li {
    display: grid;
    grid-template-columns: 24px minmax(0, 1fr);
    align-items: center;
    gap: 10px;
    min-height: 0;
    padding: 14px;
  }

  .course-profile-audience-list li > span {
    width: 22px;
    margin: 0;
  }

  .course-profile-focus-list {
    margin-top: 16px;
  }

  .course-profile-focus-list li {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 10px;
    padding: 17px 0;
  }

  .course-profile-focus-list h3,
  .course-profile-outline-list h3 {
    font-size: 15px;
  }

  .course-profile-focus-list p,
  .course-profile-outline-list p {
    font-size: 13px;
  }

  .course-profile-output {
    padding: 22px 20px;
  }

  .course-profile-output > svg {
    width: 28px;
    height: 28px;
  }

  .course-profile-consult-strip {
    display: block;
    margin-top: 30px;
    padding: 20px 18px;
  }

  .course-profile-consult-strip .btn {
    width: 100%;
    margin-top: 16px;
  }

  .course-profile-outline-heading {
    padding-bottom: 10px;
    font-size: 12px;
  }

  .qhz-course-outline .qhz-outline-children {
    margin-right: 0;
    margin-left: 10px;
    padding-left: 9px;
  }

  .qhz-course-outline .qhz-course-section > summary { grid-template-columns: minmax(20px, max-content) minmax(0, 1fr); gap: 2px 8px; padding: 10px 28px 10px 10px; }
  .qhz-course-outline .qhz-course-section > summary .course-profile-outline-index { grid-row: 1 / span 2; min-width: 20px; height: 24px; }
  .qhz-course-outline .qhz-course-section > summary small { grid-column: 2; font-size: 11px; }
  .qhz-course-outline .qhz-course-section > summary::after { right: 12px; }
  .qhz-course-outline .course-profile-outline-list .qhz-course-lesson-row { grid-template-columns: 20px minmax(0, 1fr) auto; gap: 8px; padding: 12px 10px; }
  .qhz-course-outline .qhz-course-lesson-copy h3 { font-size: 13px; }
  .qhz-course-outline .qhz-course-lesson-copy p { font-size: 11px; }
  .qhz-course-outline .course-profile-outline-list .qhz-course-lesson-action { font-size: 0; gap: 0; }
  .qhz-course-outline .course-profile-outline-list .qhz-course-lesson-action svg { width: 16px; height: 16px; }

  .course-profile-related {
    padding: 23px 18px 25px;
  }

  .course-profile-related-list {
    grid-template-columns: 1fr;
    gap: 17px;
    padding-top: 18px;
  }

  .course-profile-related-item {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 12px;
  }

  .course-profile-related-item img {
    width: 112px;
    height: 67px;
  }
}

@media (max-width: 359px) {
  .course-profile-action-buttons { display: flex; }

  .course-profile-output > svg {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .course-profile-tab::after,
  .course-profile-related-item img,
  .course-profile-related-heading a svg,
  .course-profile-outline-list a svg {
    transition: none;
  }
}