.support-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 24px; align-items: start; }
.support-sidebar { position: sticky; top: 94px; padding: 22px 15px; }
.support-sidebar h2 { margin: 0 10px 15px; color: var(--navy); font-size: 18px; }
.support-sidebar nav { display: grid; gap: 6px; }
.support-sidebar a { padding: 12px; border-radius: 7px; color: #526177; font-size: 14px; font-weight: 700; }
.support-sidebar a:hover { color: var(--blue); background: var(--blue-soft); }
.support-sidebar a[aria-current] { color: #fff; background: var(--blue); }
.support-content { min-width: 0; }
.support-panel { padding: 30px; scroll-margin-top: 130px; }
.support-panel h2 { margin-bottom: 8px; font-size: 26px; color: var(--navy); }
.support-panel header p { color: var(--muted); font-size: 14px; }
.support-list-heading { display: flex; justify-content: space-between; padding: 14px 16px; border-block: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.support-panel .empty-state { padding: 65px 15px; text-align: center; }
@media (max-width: 1050px) { .support-sidebar { top: 138px; } }
@media (max-width: 640px) {
  .support-layout { grid-template-columns: 100px minmax(0, 1fr); gap: 12px; }
  .support-sidebar { padding: 16px 7px; top: 128px; }
  .support-sidebar h2 { margin-inline: 7px; font-size: 16px; }
  .support-sidebar a { padding: 11px 7px; font-size: 12px; }
  .support-panel { padding: 20px 14px; }
  .support-panel h2 { font-size: 22px; }
  .support-panel header p { font-size: 13px; }
  .support-panel .empty-state { padding: 38px 0; }
  .support-panel .empty-state strong { font-size: 15px; }
}
.support-status:empty, .support-account:empty { display: none; }
.support-status, .support-account { margin: 0 0 16px; padding: 14px 18px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: #435775; font-size: 14px; overflow-wrap: anywhere; }
.support-panel { overflow-wrap: anywhere; }
.support-heading { display: flex; flex-wrap: wrap; align-items: start; justify-content: space-between; gap: 16px; margin-bottom: 28px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.support-heading > div { flex: 1 1 230px; min-width: 0; }
.support-panel button { min-height: 40px; padding: 9px 14px; border: 1px solid #cbdaf0; border-radius: 7px; background: #fff; color: var(--navy); font: inherit; font-size: 14px; cursor: pointer; max-width: 100%; }
.support-panel button.primary-button { background: var(--blue); color: #fff; border-color: var(--blue); }
.support-panel button:disabled { cursor: not-allowed; opacity: .6; }
.support-panel button:focus-visible, .support-panel a:focus-visible, .support-panel input:focus-visible, .support-panel textarea:focus-visible { outline: 3px solid #8cb9ff; outline-offset: 3px; }
.support-panel .empty-state p { margin-bottom: 16px; }
.support-post-list { border-top: 1px solid var(--line); }
.support-post-row { display: grid; gap: 8px; padding: 22px 8px; border-bottom: 1px solid var(--line); color: var(--navy); }
.support-post-row:hover { background: #f5f8fe; }
.support-post-row strong { font-size: 16px; font-weight: 600; line-height: 1.6; }
.post-meta { font-size: 12px; color: var(--muted); }
.support-pagination, .support-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.support-pagination { justify-content: center; font-size: 13px; }
#post-title { font-size: 24px; margin: 24px 0 10px; line-height: 1.5; }
.post-body { padding-block: 26px; margin-top: 20px; border-top: 1px solid var(--line); min-height: 180px; white-space: pre-wrap; line-height: 1.9; }
.support-reply { padding: 22px; background: #f3f7ff; border-radius: 10px; margin-top: 18px; }
.support-reply h4 { margin-bottom: 12px; }
.support-reply p { white-space: pre-wrap; }
.support-form { display: grid; gap: 12px; }
.support-form[hidden], .support-panel [hidden] { display: none !important; }
.support-form h3 { font-size: 22px; margin-bottom: 8px; }
.support-form > p { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.support-form label { font-size: 14px; font-weight: 600; margin-top: 8px; }
.support-form input:not([type="checkbox"]), .support-form textarea { width: 100%; min-width: 0; padding: 12px; border: 1px solid #bfd1ec; border-radius: 7px; color: var(--navy); background: #fff; font: inherit; }
.support-form textarea { resize: vertical; line-height: 1.7; }
.support-checkbox { display: flex; gap: 8px; align-items: center; }
.support-checkbox input { width: 18px; height: 18px; }
#reply-form { padding-top: 24px; margin-top: 24px; border-top: 1px solid var(--line); }
#reply-form button { justify-self: start; }
#course-view > h3 { font-size: 22px; margin: 24px 0 12px; line-height: 1.5; }
#course-description, .course-materials p, .course-curriculum p { color: #526177; line-height: 1.85; white-space: pre-wrap; }
.course-draft { display: inline-block; padding: 5px 10px; border-radius: 5px; background: #edf4ff; color: #1555a6; font-size: 12px; }
.course-summary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; padding: 24px; margin-block: 28px 36px; background: #f7f9fd; border: 1px solid var(--line); border-radius: 10px; }
.course-summary dt { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.course-summary dd { margin: 0; font-size: 15px; line-height: 1.7; white-space: pre-wrap; }
.course-curriculum { list-style: none; padding: 0; display: grid; gap: 14px; }
.course-curriculum li { padding: 22px; border: 1px solid var(--line); border-radius: 10px; }
.course-curriculum span { color: var(--blue); font-size: 12px; font-weight: 700; }
.course-curriculum h4 { margin: 10px 0 8px; font-size: 17px; }
.course-curriculum p { font-size: 14px; }
.course-materials { margin-block: 32px; }
.course-materials h3 { margin-bottom: 12px; font-size: 19px; }
.course-payment { padding: 26px; background: #f5f8ff; border: 1px solid #c8dbff; border-radius: 12px; }
.course-payment h3 { font-size: 22px; margin-bottom: 10px; }
.course-payment > p { font-size: 14px; color: #526177; }
.payment-quantity { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-block: 24px; font-size: 14px; }
.payment-quantity input { width: 72px; min-width: 0; padding: 8px; border: 1px solid #bfd1ec; border-radius: 6px; background: #fff; color: var(--navy); font: inherit; }
.course-payment fieldset { margin: 0; padding: 18px 0; border: 0; border-block: 1px solid var(--line); min-width: 0; }
.course-payment legend { font-size: 14px; padding: 0 0 12px; }
.course-payment fieldset label { display: flex; align-items: center; gap: 8px; font-size: 14px; margin-bottom: 12px; }
.course-payment input[type="radio"] { accent-color: var(--blue); width: 17px; height: 17px; flex-shrink: 0; }
.course-payment .payment-total { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; margin-block: 22px; color: var(--navy); }
.payment-total strong { font-size: 24px; }
.course-payment > button { width: 100%; }
.course-payment .payment-preview-note { font-size: 12px; margin-top: 12px; line-height: 1.7; }
.course-lesson-field { display: grid; gap: 10px; min-width: 0; border: 1px solid var(--line); border-radius: 8px; padding: 18px; margin-bottom: 18px; }
.course-lesson-field legend { padding: 0 8px; color: var(--blue); font-weight: 700; }
.course-lesson-field button, #add-lesson { justify-self: start; }
@media (max-width: 900px) { .course-summary { grid-template-columns: 1fr; } }
@media (max-width: 640px) {
  .support-heading { gap: 12px; margin-bottom: 20px; padding-bottom: 18px; }
  .support-heading > div { flex-basis: 100%; }
  .support-panel button { font-size: 12px; padding: 8px 10px; }
  .support-post-row { padding: 18px 0; }
  .support-post-row strong { font-size: 14px; }
  #post-title, #course-view > h3, .course-payment h3 { font-size: 19px; }
  .course-summary, .course-curriculum li, .course-payment, .support-reply, .course-lesson-field { padding: 14px; }
  .course-summary { gap: 18px; }
  .course-curriculum h4 { font-size: 15px; }
  .course-curriculum p, #course-description, .course-materials p { font-size: 13px; }
  .support-form input:not([type="checkbox"]), .support-form textarea { font-size: 16px; padding: 8px; }
  .payment-total strong { font-size: 20px; }
}