/* ============================================================
   万川官网 · 支持中心
   浅色工具页：先给联系入口，再按问题类型查找答案。
   ============================================================ */

.support-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 92px 0 88px;
  border-bottom: 1px solid var(--border-soft);
  background:
    radial-gradient(circle at 76% 25%, rgba(72, 111, 216, .11), transparent 29%),
    linear-gradient(180deg, #f4f7ff 0%, var(--bg) 88%);
}
.support-hero-grid { position: absolute; z-index: -1; inset: 0; opacity: .65; background-image: linear-gradient(rgba(59, 111, 224, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(59, 111, 224, .035) 1px, transparent 1px); background-size: 58px 58px; mask-image: radial-gradient(ellipse 78% 72% at 70% 42%, #000 25%, transparent 78%); -webkit-mask-image: radial-gradient(ellipse 78% 72% at 70% 42%, #000 25%, transparent 78%); }
.support-hero-layout { position: relative; display: grid; grid-template-columns: minmax(360px, .76fr) minmax(520px, 1.24fr); gap: 74px; align-items: center; }
.support-hero-copy .eyebrow { margin-bottom: 18px; font-size: 11px; letter-spacing: .12em; }
.support-hero-copy h1 { max-width: 520px; color: var(--text); font-size: clamp(36px, 3.5vw, 48px); font-weight: 600; line-height: 1.17; letter-spacing: -.035em; }
.support-hero-copy h1 span { color: var(--accent); }
.support-hero-copy > p:not(.eyebrow) { max-width: 540px; margin-top: 24px; color: var(--text-soft); font-size: 15px; line-height: 1.82; }
.support-hero-actions { display: flex; align-items: center; gap: 22px; margin-top: 31px; }
.support-text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--accent); font-size: 13px; font-weight: 600; }
.support-text-link::after { content: "→"; color: var(--moon-500); transition: transform .18s ease; }
.support-text-link:hover::after { transform: translateX(4px); }

.support-contact-panel { overflow: hidden; padding: 0 24px 18px; border: 1px solid rgba(59, 111, 224, .14); border-radius: 18px; background: color-mix(in srgb, var(--bg-card) 94%, #edf3ff); box-shadow: 0 28px 60px -48px rgba(12, 27, 79, .38); }
.support-panel-head { height: 49px; display: flex; align-items: center; justify-content: space-between; margin: 0 -24px; padding: 0 24px; border-bottom: 1px solid var(--border-soft); }
.support-panel-head span { color: var(--text); font-size: 11px; font-weight: 600; }
.support-panel-head b { color: #2d8b6f; font-size: 9px; font-weight: 600; }
.support-panel-head b::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: #52cda1; box-shadow: 0 0 10px rgba(82, 205, 161, .32); }
.support-contact-panel > a { display: flex; align-items: center; justify-content: space-between; gap: 22px; min-height: 86px; border-bottom: 1px solid var(--border-soft); }
.support-contact-panel > a > span { position: relative; display: grid; padding-left: 21px; }
.support-contact-panel > a i { position: absolute; left: 0; top: 6px; width: 6px; height: 6px; border-radius: 50%; background: #7898eb; }
.support-contact-panel > a b { color: var(--text); font-size: 14px; font-weight: 600; }
.support-contact-panel > a small { margin-top: 5px; color: var(--text-muted); font-size: 11.5px; }
.support-contact-panel > a strong { color: var(--accent); font-size: 12px; font-weight: 600; text-align: right; }
.support-contact-panel > p { margin: 15px 0 0; color: var(--text-muted); font-size: 11.5px; }

.support-report { padding: 88px 0; }
.support-report .section-title,
.support-faq .section-title,
.support-apps .section-title { font-size: clamp(27px, 3vw, 36px); font-weight: 600; letter-spacing: -.025em; }
.support-report .section-head { max-width: 680px; margin-bottom: 40px; }
.support-report .section-head .eyebrow { justify-content: center; }
.support-report .section-lede { max-width: 620px; font-size: 14px; }
.support-report .checklist-card { padding: 0 22px 20px; overflow: hidden; border: 1px solid var(--border); border-radius: 16px; background: var(--bg-card); box-shadow: none; }
.support-report .checklist { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 0 -22px; }
.support-report .checklist li { min-height: 154px; padding: 65px 22px 24px; border-right: 1px solid var(--border-soft); border-bottom: 0; color: var(--text-soft); font-size: 13.5px; line-height: 1.65; }
.support-report .checklist li:last-child { border-right: 0; }
.support-report .checklist li::before { left: 22px; top: 23px; font-size: 13px; }
.support-report .checklist-note { margin: 0; padding: 18px 2px 0; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 12.5px; line-height: 1.7; }

.support-faq { padding: 88px 0; }
.support-faq-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 68px; align-items: start; }
.support-faq-nav { position: sticky; top: 100px; }
.support-faq-nav .section-head { margin-bottom: 25px; }
.support-faq-nav nav { display: grid; border-top: 1px solid var(--border); }
.support-faq-nav nav a { display: flex; align-items: center; justify-content: space-between; min-height: 46px; border-bottom: 1px solid var(--border); color: var(--text-soft); font-size: 12.5px; transition: color .15s ease, padding-left .15s ease; }
.support-faq-nav nav a::after { content: "→"; color: var(--text-muted); font-family: var(--font-mono); font-size: 10px; }
.support-faq-nav nav a:hover { padding-left: 4px; color: var(--accent); }
.support-faq-content { min-width: 0; }
.support-faq .faq-group { scroll-margin-top: 92px; margin: 0 0 14px; padding: 12px 24px 5px; border: 1px solid var(--border); border-radius: 16px; background: var(--bg-card); }
.support-faq .faq-group-title { margin: 0; padding: 14px 0 13px; border-bottom: 1px solid var(--border-soft); color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .05em; }
.support-faq .faq-item summary { padding: 19px 0; font-size: 14.5px; font-weight: 600; }
.support-faq .faq-item p { max-width: 760px; padding: 0 22px 20px 0; color: var(--text-soft); font-size: 13.5px; line-height: 1.78; }

.support-apps { padding: 88px 0; }
.support-apps .section-head { margin-bottom: 40px; }
.support-apps .grid { gap: 12px; }
.support-apps .app-card { padding: 28px; border: 1px solid var(--border); border-radius: 16px; background: var(--bg-card); }
.support-apps .app-kicker { font-size: 10.5px; }
.support-apps .app-title { font-size: 20px; }
.support-apps .app-row { grid-template-columns: 98px minmax(0, 1fr); padding: 15px 0; }
.support-apps .app-row dt { font-size: 11px; }
.support-apps .app-row dd { font-size: 13px; line-height: 1.72; }

.support-links { padding: 88px 0; }
.support-links .link-grid { gap: 12px; }
.support-links .link-card { min-height: 195px; padding: 25px; border-radius: 15px; }
.support-links .link-kicker { font-size: 10.5px; }
.support-links .link-title { font-size: 16px; }
.support-links .link-body { font-size: 13px; }
.support-links .tail-cta { margin-top: 42px; }

:root[data-theme="dark"] .support-hero { background: linear-gradient(180deg, #101731, var(--bg) 88%); }
:root[data-theme="dark"] .support-contact-panel { background: var(--bg-card); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .support-hero { background: linear-gradient(180deg, #101731, var(--bg) 88%); }
  :root:not([data-theme]) .support-contact-panel { background: var(--bg-card); }
}

@media (max-width: 980px) {
  .support-hero-layout { grid-template-columns: minmax(0, 1fr); gap: 42px; }
  .support-contact-panel { max-width: 740px; }
  .support-faq-layout { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .support-faq-nav { position: static; }
  .support-faq-nav nav { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 20px; }
  .support-report .checklist { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .support-report .checklist li { min-height: 130px; border-bottom: 1px solid var(--border-soft); }
  .support-report .checklist li:nth-child(2n) { border-right: 0; }
  .support-report .checklist li:last-child { grid-column: 1 / -1; border-bottom: 0; }
}

@media (max-width: 700px) {
  .support-apps .grid,
  .support-links .link-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 580px) {
  .support-hero { padding: 72px 0; }
  .support-hero-copy h1 { font-size: 33px; line-height: 1.18; }
  .support-hero-copy > p:not(.eyebrow) { font-size: 14.5px; }
  .support-hero-actions { flex-direction: column; align-items: stretch; gap: 14px; }
  .support-hero-actions .btn { width: 100%; }
  .support-text-link { justify-content: center; }
  .support-contact-panel { padding-left: 18px; padding-right: 18px; }
  .support-panel-head { margin-left: -18px; margin-right: -18px; padding-left: 18px; padding-right: 18px; }
  .support-contact-panel > a { align-items: flex-start; flex-direction: column; gap: 10px; padding: 16px 0; }
  .support-contact-panel > a strong { padding-left: 21px; text-align: left; }
  .support-report, .support-faq, .support-apps, .support-links { padding: 72px 0; }
  .support-report .checklist { grid-template-columns: minmax(0, 1fr); }
  .support-report .checklist li,
  .support-report .checklist li:nth-child(2n),
  .support-report .checklist li:last-child { grid-column: auto; min-height: 108px; padding-top: 52px; border-right: 0; border-bottom: 1px solid var(--border-soft); }
  .support-report .checklist li:last-child { border-bottom: 0; }
  .support-faq-nav nav { grid-template-columns: minmax(0, 1fr); }
  .support-faq .faq-group { padding-left: 18px; padding-right: 18px; }
  .support-apps .app-row { grid-template-columns: minmax(0, 1fr); gap: 5px; }
}