/* 技术支持 — 修车资料 / 课件 / 视频，主题色 #00378b / #00aa1a */
.support-page {
  --support-primary: var(--theme-default-color, #00378b);
  --support-primary-dark: var(--home-color-primary-dark, #002a6b);
  --support-accent: var(--color-accent-green, #00aa1a);
  --support-dark: #101828;
  --support-text: #4a5565;
  --support-muted: #6a7282;
  --support-border: #e5e7eb;
  --support-bg: #f7f9fc;
  --support-shell: var(--site-content-shell, min(1600px, calc(100% - 96px)));
  --support-shadow: 0 12px 32px rgba(0, 55, 139, 0.1);
  --support-shadow-soft: 0 8px 24px rgba(0, 55, 139, 0.08);
}

.support-main {
  background: #fff;
  color: var(--support-dark);
}

.support-shell {
  width: var(--support-shell);
  margin: 0 auto;
}

.support-reveal {
  opacity: 1;
  transform: none;
}

/* Hero */
.support-hero {
  position: relative;
  min-height: var(--site-page-hero-min-height, 72vh);
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 12%, rgba(0, 170, 26, 0.18), transparent 42%),
    linear-gradient(135deg, var(--support-primary) 0%, var(--support-primary-dark) 58%, #001a45 100%);
}

.support-hero-media {
  position: absolute;
  inset: 0;
}

.support-hero-media img,
.support-hero-media picture,
.support-hero-media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.support-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    color-mix(in srgb, var(--support-primary) 55%, transparent) 0%,
    color-mix(in srgb, var(--support-primary) 18%, transparent) 42%,
    rgba(10, 22, 40, 0.72) 100%
  );
  pointer-events: none;
}

.support-hero-shell {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  min-height: var(--site-page-hero-min-height, 72vh);
  padding: calc(var(--gh-header-height, 80px) + 32px) 0 56px;
}

.support-hero-copy {
  max-width: 760px;
  color: #fff;
}

.support-hero-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin: 0 0 18px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(0, 170, 26, 0.35);
  background: rgba(0, 170, 26, 0.12);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--support-accent);
}

.support-hero-copy h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 4.8vw, 52px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.support-hero-copy p {
  margin: 0;
  max-width: 680px;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.84);
}

/* Quick entry */
.support-quick {
  margin-top: -42px;
  position: relative;
  z-index: 3;
  padding-bottom: 8px;
}

.support-quick-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.support-quick-card {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 92px;
  padding: 18px 20px;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--support-primary) 10%, var(--support-border));
  background: #fff;
  box-shadow: var(--support-shadow-soft);
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.support-quick-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--support-primary) 22%, transparent);
  box-shadow: var(--support-shadow);
}

.support-quick-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 16px;
  color: var(--support-dark);
}

.support-quick-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--support-muted);
}

.support-quick-card__icon {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--support-primary);
  background: var(--support-primary);
  border: 1px solid color-mix(in srgb, var(--support-primary) 12%, transparent);
}

/* Section common */
.support-section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
}

.support-section-head--center {
  display: block;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
  max-width: 760px;
}

.support-section-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin: 0 0 12px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--support-primary) 18%, transparent);
  background: color-mix(in srgb, var(--support-primary) 6%, #fff);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--support-primary);
}

.support-section-title {
  margin: 0 0 12px;
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--support-dark);
}

.support-section-desc {
  margin: 0;
  max-width: 720px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--support-text);
}

.support-section-head--center .support-section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* Resources */
.support-resources {
  padding: 72px 0 56px;
}

.support-doc-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.support-filter-btn {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid var(--support-border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--support-text);
  text-decoration: none;
  background: #fff;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.support-filter-btn:hover,
.support-filter-btn.is-active {
  border-color: var(--support-primary);
  color: #fff;
  background: var(--support-primary);
}

.support-resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.support-resource-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 24px;
  border: 1px solid color-mix(in srgb, var(--support-primary) 10%, var(--support-border));
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--support-shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.support-resource-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--support-primary) 22%, transparent);
  box-shadow: var(--support-shadow);
}

.support-resource-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.support-file-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 32px;
  padding: 0 10px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--support-primary);
  background: color-mix(in srgb, var(--support-primary) 10%, #fff);
  border: 1px solid color-mix(in srgb, var(--support-primary) 14%, transparent);
}

.support-file-icon--ppt {
  color: #b45309;
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.22);
}

.support-file-icon--doc {
  color: #1d4ed8;
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.22);
}

.support-file-icon--zip {
  color: #047857;
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.22);
}

.support-resource-badge {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--support-primary);
  background: color-mix(in srgb, var(--support-primary) 8%, #fff);
  border: 1px solid color-mix(in srgb, var(--support-primary) 12%, transparent);
}

.support-resource-title {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--support-dark);
}

.support-resource-desc {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--support-text);
}

.support-resource-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-top: auto;
  padding-top: 8px;
  font-size: 12px;
  color: var(--support-muted);
}

.support-resource-meta span:not(:last-child)::after {
  content: "·";
  margin-left: 12px;
  color: #cbd5e1;
}

.support-resource-actions {
  margin-top: 18px;
}

.support-resource-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  background: var(--support-primary);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.support-resource-download:hover {
  background: var(--support-primary-dark);
  box-shadow: 0 8px 20px rgba(0, 55, 139, 0.24);
}

.support-empty {
  margin: 0;
  padding: 48px 24px;
  border-radius: 16px;
  border: 1px dashed color-mix(in srgb, var(--support-primary) 24%, transparent);
  background: color-mix(in srgb, var(--support-primary) 4%, #fff);
  text-align: center;
  color: var(--support-muted);
}

.support-empty--wide {
  grid-column: 1 / -1;
}

.support-empty strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
  color: var(--support-dark);
}

.support-empty p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

/* Videos */
.support-videos {
  padding: 56px 0 72px;
  background: linear-gradient(180deg, var(--support-bg) 0%, #f3f6fb 100%);
}

.support-video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.support-video-card {
  overflow: hidden;
  border-radius: 16px;
  background: #fff;
  border: 1px solid color-mix(in srgb, var(--support-primary) 10%, var(--support-border));
  box-shadow: var(--support-shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.support-video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--support-shadow);
}

.support-video-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #e5e7eb;
}

.support-video-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.support-video-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(0, 55, 139, 0.28);
  cursor: pointer;
  transition: background 0.2s;
}

.support-video-play:hover {
  background: rgba(0, 55, 139, 0.42);
}

.support-video-duration,
.support-video-tag {
  position: absolute;
  padding: 4px 8px;
  font-size: 12px;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  border-radius: 4px;
}

.support-video-duration {
  right: 10px;
  bottom: 10px;
}

.support-video-tag {
  left: 10px;
  top: 10px;
  background: rgba(0, 170, 26, 0.82);
}

.support-video-body {
  padding: 18px 20px 22px;
}

.support-video-title {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--support-dark);
}

.support-video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--support-text);
}

.support-video-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0;
  border: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--support-primary);
  background: none;
  cursor: pointer;
}

/* Service */
.support-service {
  padding: 72px 0 96px;
}

.support-service-shell {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 24px;
}

.support-contact-card {
  padding: 36px 32px;
  color: #fff;
  border-radius: 16px;
  border: 1px solid rgba(0, 170, 26, 0.16);
  background:
    radial-gradient(circle at 92% 18%, rgba(0, 170, 26, 0.2), transparent 38%),
    linear-gradient(135deg, var(--support-primary) 0%, var(--support-primary-dark) 58%, #001a45 100%);
  box-shadow: 0 18px 40px rgba(0, 55, 139, 0.18);
}

.support-contact-card-top h2 {
  margin: 16px 0 0;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.35;
}

.support-contact-main-icon {
  color: rgba(255, 255, 255, 0.9);
}

.support-contact-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 28px;
}

.support-contact-row {
  display: flex;
  gap: 14px;
}

.support-contact-row p {
  margin: 0 0 4px;
  font-size: 13px;
  opacity: 0.75;
}

.support-contact-row strong {
  font-size: 15px;
  font-weight: 500;
}

.support-contact-row a {
  color: inherit;
  text-decoration: none;
}

.support-form-panel {
  padding: 36px;
  border: 1px solid color-mix(in srgb, var(--support-primary) 12%, var(--support-border));
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--support-shadow-soft);
}

.support-form-panel::before {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  margin-bottom: 20px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--support-primary) 0%, var(--support-accent) 100%);
}

.support-form-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--support-primary);
}

.support-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 28px;
}

.support-form-field > span:first-child {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--support-dark);
}

.support-input-wrap input,
.support-region-select {
  width: 100%;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--support-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--support-dark);
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.support-input-wrap input:focus,
.support-region-select:focus {
  outline: none;
  border-color: var(--support-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--support-primary) 12%, transparent);
}

.support-form-field-region {
  grid-column: 1 / -1;
}

.support-region-picker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.support-region-select {
  flex: 1;
  min-width: 100px;
}

.support-region-sep {
  color: #9ca3af;
}

.support-form-topics {
  margin-top: 24px;
}

.support-form-topics-label {
  display: block;
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 500;
}

.support-topic-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.support-topic-btn {
  min-height: 38px;
  padding: 0 16px;
  border: 1px solid var(--support-border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--support-text);
  background: #fff;
  cursor: pointer;
  transition: all 0.2s;
}

.support-topic-btn.is-active {
  border-color: var(--support-primary);
  color: #fff;
  background: var(--support-primary);
}

.support-submit-btn {
  width: 100%;
  min-height: 48px;
  margin-top: 28px;
  border: 0;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--support-primary);
  cursor: pointer;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.support-submit-btn:hover {
  background: var(--support-primary-dark);
  box-shadow: 0 8px 20px rgba(0, 55, 139, 0.24);
}

.support-form-feedback {
  margin: 12px 0 0;
  font-size: 14px;
}

.support-form-feedback.is-success {
  color: var(--support-accent);
}

.support-form-feedback.is-error {
  color: #e11d48;
}

/* Toast & modal */
.support-toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  z-index: 120;
  transform: translateX(-50%) translateY(120%);
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 14px;
  color: #fff;
  background: rgba(16, 24, 40, 0.92);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.support-toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.support-video-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.support-video-modal[hidden] {
  display: none;
}

.support-video-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
}

.support-video-modal__dialog {
  position: relative;
  z-index: 1;
  width: min(960px, 100%);
  padding: 24px;
  border-radius: 16px;
  background: #fff;
}

.support-video-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  font-size: 24px;
  line-height: 1;
  color: var(--support-dark);
  background: #f3f4f6;
  cursor: pointer;
}

.support-video-modal__title {
  margin: 0 48px 16px 0;
  font-size: 20px;
  font-weight: 600;
}

.support-video-modal video {
  width: 100%;
  border-radius: 8px;
  background: #000;
}

@media (max-width: 1100px) {
  .support-quick-grid,
  .support-resource-grid,
  .support-video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .support-service-shell {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .support-page {
    --support-shell: calc(100% - 32px);
  }

  .support-hero-shell {
    align-items: flex-end;
    padding-bottom: 72px;
  }

  .support-quick {
    margin-top: -28px;
  }

  .support-quick-grid,
  .support-resource-grid,
  .support-video-grid {
    grid-template-columns: 1fr;
  }

  .support-section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .support-doc-filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    width: 100%;
    padding-bottom: 4px;
    scrollbar-width: none;
  }

  .support-doc-filters::-webkit-scrollbar {
    display: none;
  }

  .support-filter-btn {
    flex-shrink: 0;
  }

  .support-form-grid {
    grid-template-columns: 1fr;
  }

  .support-resources,
  .support-videos,
  .support-service {
    padding-top: 56px;
    padding-bottom: 56px;
  }
}