/* FOCUSDESIGN — 下载中心（需与 ai-tools.css 一并引入） */
html:has(body.download-center-page) {
  height: auto;
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
}

body.download-center-page {
  overflow-x: hidden;
  overflow-y: auto;
  min-height: 100dvh;
  height: auto;
  max-height: none;
}

body.download-center-page .at-main {
  flex: 1 1 auto;
  display: block;
  min-height: calc(100dvh - 96px);
  overflow: visible;
  justify-content: flex-start;
  padding-top: clamp(16px, 2.5vh, 28px);
  padding-bottom: clamp(24px, 4vh, 48px);
}

/* 取消 AI 工具页黄金分割占位，避免卡片被挤扁 */
body.download-center-page .at-main::before,
body.download-center-page .at-main::after {
  display: none;
}

body.download-center-page .at-hero {
  margin-bottom: clamp(20px, 3vh, 32px);
}

body.download-center-page .at-cards,
body.download-center-page .dc-cards {
  flex: none;
  height: auto;
  min-height: 0;
  align-items: stretch;
}

body.download-center-page .dc-cards .at-card {
  height: auto;
  min-height: clamp(280px, 36vh, 380px);
}

body.download-center-page .dc-cards .at-card-media {
  flex: 0 0 auto;
  height: clamp(150px, 22vh, 220px);
  min-height: 150px;
}

body.download-center-page .dc-cards .at-card-content {
  flex: 1 1 auto;
  overflow: visible;
  padding: clamp(14px, 2vh, 18px) clamp(16px, 2vw, 22px);
}

body.download-center-page .dc-cards .at-card-title {
  white-space: normal;
  overflow: visible;
  text-overflow: unset;
  line-height: 1.35;
}

body.download-center-page .dc-cards .at-card-desc {
  -webkit-line-clamp: 3;
  overflow: visible;
  display: block;
}

body.download-center-page .dc-cards .at-card-cta {
  display: inline-flex;
}

.dc-view { width: 100%; display: none; }
.dc-view.active { display: block; animation: at-fade-up 0.45s cubic-bezier(0.22, 1, 0.36, 1) both; }

.dc-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(12px, 2vh, 20px);
  padding: 6px 14px;
  border: 1px solid var(--at-border);
  border-radius: 999px;
  background: var(--at-card-bg);
  color: var(--at-text2);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.dc-back:hover { border-color: var(--at-border-hover); color: var(--at-accent); }

.dc-portal-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 0;
  padding: 6px 14px;
  border: 1px solid var(--at-accent);
  border-radius: 999px;
  background: var(--at-card-bg);
  color: var(--at-accent);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.dc-portal-switch:hover {
  border-color: var(--at-border-hover);
  background: rgba(212, 168, 83, 0.08);
}

.dc-cards .at-card {
  cursor: pointer;
  border: none;
  text-align: left;
  font: inherit;
  width: 100%;
}
.dc-cards--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 920px;
  margin: 0 auto;
}
@media (max-width: 768px) {
  .dc-cards--2 { grid-template-columns: 1fr; }
}
.dc-card-cover {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.dc-card-cover--client {
  background-image:
    linear-gradient(135deg, rgba(6,6,8,0.55) 0%, rgba(6,6,8,0.15) 100%),
    url('/static/portal/indoor.png');
}
.dc-card-cover--ppt {
  background-image:
    linear-gradient(135deg, rgba(6,6,8,0.6) 0%, rgba(6,6,8,0.2) 100%),
    url('/static/portal/outdoor.png');
}
.dc-card-cover--tools {
  background-image:
    linear-gradient(135deg, rgba(6,6,8,0.55) 0%, rgba(6,6,8,0.15) 100%),
    url('/static/portal/video.png');
}

.dc-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  vertical-align: middle;
}
.dc-badge-free {
  color: #6ee7b7;
  border: 1px solid rgba(110, 231, 183, 0.35);
  background: rgba(110, 231, 183, 0.08);
}
.dc-badge-paid {
  color: var(--at-accent);
  border: 1px solid var(--at-border);
  background: rgba(212, 168, 83, 0.08);
}

/* —— 客户端软件 —— */
.dc-client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: clamp(14px, 2vw, 20px);
  width: 100%;
}
.dc-client-card {
  border: 1px solid var(--at-border);
  border-radius: 12px;
  background: var(--at-card-bg);
  backdrop-filter: blur(8px);
  padding: clamp(16px, 2vw, 22px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.dc-client-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.dc-client-name {
  font-family: 'Cormorant Garamond', 'Songti SC', serif;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--at-text);
}
.dc-client-sub { font-size: 0.72rem; color: var(--at-text2); margin-top: 4px; }
.dc-client-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 0.72rem;
  color: var(--at-text2);
}
.dc-client-desc { font-size: 0.82rem; line-height: 1.55; color: var(--at-text2); }
.dc-client-highlights {
  margin: 0;
  padding-left: 1.1em;
  font-size: 0.78rem;
  color: var(--at-text2);
  line-height: 1.5;
}
.dc-client-actions { margin-top: auto; display: flex; gap: 10px; flex-wrap: wrap; }

.dc-inline-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85em;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--at-border);
  color: var(--at-text2);
}

.dc-release-wrap { width: 100%; margin-bottom: clamp(18px, 3vh, 28px); }
.dc-release-panel {
  border: 1px solid var(--at-border);
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(212, 168, 83, 0.06) 0%, var(--at-card-bg) 42%);
  padding: clamp(14px, 2vw, 20px);
}
.dc-release-panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 14px;
}
.dc-release-panel-title {
  margin: 0;
  font-family: 'Cormorant Garamond', 'Songti SC', serif;
  font-size: 1.25rem;
  letter-spacing: 0.06em;
  color: var(--at-accent);
}
.dc-release-updated { font-size: 0.72rem; color: var(--at-text2); }
.dc-release-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: min(42vh, 320px);
  overflow-y: auto;
  padding-right: 4px;
}
.dc-release-item {
  border: 1px solid var(--at-border);
  border-radius: 10px;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.15);
}
html[data-theme='light'] .dc-release-item { background: rgba(255, 255, 255, 0.5); }
.dc-release-item-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.dc-release-level {
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--at-border);
  color: var(--at-accent);
}
.dc-release-item--important .dc-release-level {
  color: #fca5a5;
  border-color: rgba(252, 165, 165, 0.4);
}
.dc-release-date { font-size: 0.72rem; color: var(--at-text2); }
.dc-release-title {
  margin: 0 0 6px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--at-text);
}
.dc-release-body {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--at-text2);
}
.dc-release-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.dc-release-tag {
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(212, 168, 83, 0.1);
  border: 1px solid rgba(212, 168, 83, 0.25);
  color: var(--at-text2);
}

.dc-client-badges { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.dc-badge-ready {
  color: #93c5fd;
  border: 1px solid rgba(147, 197, 253, 0.35);
  background: rgba(147, 197, 253, 0.08);
}
.dc-badge-pending {
  color: #fcd34d;
  border: 1px solid rgba(252, 211, 77, 0.35);
  background: rgba(252, 211, 77, 0.08);
}
.dc-client-filename {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.68rem;
  opacity: 0.85;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dc-install-guide {
  margin-top: 4px;
  border: 1px solid var(--at-border);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.12);
}
html[data-theme='light'] .dc-install-guide { background: rgba(0, 0, 0, 0.03); }
.dc-install-guide-summary {
  cursor: pointer;
  padding: 10px 12px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--at-accent);
  list-style: none;
}
.dc-install-guide-summary::-webkit-details-marker { display: none; }
.dc-install-guide-summary::before {
  content: '▸ ';
  display: inline-block;
  transition: transform 0.2s;
}
.dc-install-guide[open] .dc-install-guide-summary::before { transform: rotate(90deg); }
.dc-install-guide-body { padding: 0 12px 12px; font-size: 0.76rem; color: var(--at-text2); }
.dc-guide-label {
  margin: 8px 0 6px;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--at-text);
}
.dc-guide-req, .dc-guide-steps {
  margin: 0;
  padding-left: 1.2em;
  line-height: 1.55;
}
.dc-guide-steps { list-style: none; padding-left: 0; }
.dc-guide-steps li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 8px;
}
.dc-guide-step-num {
  flex: 0 0 22px;
  height: 22px;
  line-height: 22px;
  text-align: center;
  border-radius: 50%;
  font-size: 0.68rem;
  background: rgba(212, 168, 83, 0.15);
  color: var(--at-accent);
}
.dc-guide-doc { margin: 10px 0 0; }
.dc-link { color: var(--at-accent); text-decoration: none; border-bottom: 1px solid rgba(212, 168, 83, 0.35); }
.dc-link:hover { opacity: 0.9; }

.dc-upload-hint {
  margin-top: 20px;
  width: 100%;
  border: 1px dashed var(--at-border);
  border-radius: 10px;
  padding: 14px 16px;
}
.dc-upload-hint-inner {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--at-text2);
}

.dc-companion-section {
  width: 100%;
  margin-top: clamp(28px, 4vh, 40px);
  padding-top: clamp(20px, 3vh, 28px);
  border-top: 1px solid var(--at-border);
}
.dc-companion-head { margin-bottom: clamp(14px, 2vh, 20px); }
.dc-companion-title {
  margin: 0 0 6px;
  font-family: 'Cormorant Garamond', 'Songti SC', serif;
  font-size: 1.45rem;
  letter-spacing: 0.06em;
  color: var(--at-accent);
}
.dc-companion-lead {
  margin: 0;
  font-size: 0.78rem;
  color: var(--at-text2);
  line-height: 1.55;
}
.dc-badge-companion {
  color: #c4b5fd;
  border: 1px solid rgba(196, 181, 253, 0.35);
  background: rgba(196, 181, 253, 0.08);
}
.dc-companion-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
  font-size: 0.78rem;
}
.dc-companion-links a.dc-link { align-self: flex-start; }

.dc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: opacity 0.2s, border-color 0.2s, background 0.2s;
}
.dc-btn-primary {
  background: linear-gradient(135deg, var(--at-accent) 0%, #b8923f 100%);
  color: #1a1408;
  font-weight: 500;
}
.dc-btn-primary:hover { opacity: 0.92; }
.dc-btn-primary:disabled { opacity: 0.45; cursor: not-allowed; }
.dc-btn-outline:disabled { opacity: 0.4; cursor: not-allowed; }
.dc-btn-outline {
  background: transparent;
  border-color: var(--at-border);
  color: var(--at-text);
}
.dc-btn-outline:hover { border-color: var(--at-border-hover); color: var(--at-accent); }
.dc-btn-sm { padding: 6px 12px; font-size: 0.68rem; }

/* —— PPT 汇报方案模板 —— */
body.download-center-page:has(#viewPpt.active) .at-main {
  max-width: none;
  width: 100%;
  padding-left: clamp(20px, 2.5vw, 48px);
  padding-right: clamp(20px, 2.5vw, 48px);
  padding-bottom: clamp(32px, 5vh, 64px);
}

body.download-center-page:has(#viewPpt.active) .at-hero {
  margin-bottom: clamp(14px, 2vh, 22px);
}

#viewPpt #pptLibrary {
  width: 100%;
}

.dc-ppt-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: clamp(18px, 2.5vh, 28px);
  width: 100%;
}
.dc-ppt-status { font-size: clamp(0.82rem, 1vw, 0.92rem); color: var(--at-text2); }
.dc-ppt-balance { font-size: clamp(0.82rem, 1vw, 0.92rem); color: var(--at-accent); }

.dc-ppt-category { margin-bottom: clamp(32px, 4.5vh, 48px); }
.dc-ppt-category-title {
  font-family: 'Cormorant Garamond', 'Songti SC', serif;
  font-size: clamp(1.55rem, 2.8vw, 2.25rem);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: none;
  color: var(--at-text);
  margin-bottom: clamp(16px, 2vh, 22px);
  padding-bottom: clamp(10px, 1.2vh, 14px);
  border-bottom: 2px solid var(--at-border);
  display: flex;
  align-items: center;
  gap: 12px;
}
.dc-ppt-category-title::before {
  content: '';
  flex-shrink: 0;
  width: 5px;
  height: 0.85em;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--at-accent) 0%, rgba(212, 168, 83, 0.45) 100%);
}
.dc-ppt-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: clamp(16px, 1.6vw, 24px);
}
.dc-ppt-card {
  border: 1px solid var(--at-border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--at-card-bg);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.dc-ppt-card:hover {
  border-color: var(--at-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.28);
}
.dc-ppt-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  background: rgba(0,0,0,0.25);
  overflow: hidden;
}
.dc-ppt-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.dc-ppt-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(6,6,8,0.55);
  opacity: 0;
  transition: opacity 0.25s;
}
.dc-ppt-card:hover .dc-ppt-overlay { opacity: 1; }
.dc-ppt-info { padding: clamp(12px, 1.2vw, 16px) clamp(12px, 1.2vw, 14px) clamp(14px, 1.4vw, 18px); }
.dc-ppt-name {
  font-size: clamp(0.82rem, 1vw, 0.95rem);
  color: var(--at-text);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.dc-ppt-meta {
  font-size: clamp(0.72rem, 0.88vw, 0.82rem);
  color: var(--at-text2);
  margin-top: 6px;
}
.dc-ppt-meta .paid { color: var(--at-accent); }

@media (max-width: 1400px) {
  .dc-ppt-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}
@media (max-width: 1180px) {
  .dc-ppt-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .dc-ppt-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .dc-ppt-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dc-ppt-category-title { font-size: 1.35rem; }
}

/* —— 辅助 AI 工具 —— */
.dc-tools-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
  width: 100%;
  min-height: 420px;
}
.dc-tools-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.dc-tools-tab {
  text-align: left;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--at-border);
  background: var(--at-card-bg);
  color: var(--at-text2);
  cursor: pointer;
  font-size: 0.78rem;
  transition: border-color 0.2s, color 0.2s;
}
.dc-tools-tab.active,
.dc-tools-tab:hover {
  border-color: var(--at-border-hover);
  color: var(--at-accent);
}
.dc-tools-tab.active { background: rgba(212, 168, 83, 0.08); }
.dc-tools-panel {
  border: 1px solid var(--at-border);
  border-radius: 12px;
  background: var(--at-card-bg);
  padding: clamp(16px, 2.5vw, 24px);
}
.dc-tools-panel h3 {
  font-family: 'Cormorant Garamond', 'Songti SC', serif;
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--at-text);
}
.dc-tools-panel p.dc-tools-lead {
  font-size: 0.8rem;
  color: var(--at-text2);
  margin-bottom: 16px;
  line-height: 1.5;
}
.dc-dropzone {
  border: 1px dashed var(--at-border);
  border-radius: 10px;
  padding: 28px 16px;
  text-align: center;
  color: var(--at-text2);
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.dc-dropzone.dragover {
  border-color: var(--at-accent);
  background: rgba(212, 168, 83, 0.06);
}
.dc-dropzone input { display: none; }
.dc-tool-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.dc-field label {
  display: block;
  font-size: 0.72rem;
  color: var(--at-text2);
  margin-bottom: 6px;
}
.dc-field input,
.dc-field select {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--at-border);
  background: var(--at-bg-elevated);
  color: var(--at-text);
  font-size: 0.82rem;
}
.dc-preview-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}
.dc-preview-box {
  border: 1px solid var(--at-border);
  border-radius: 8px;
  overflow: hidden;
  background: #000;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.dc-preview-box img {
  max-width: 100%;
  max-height: 220px;
  object-fit: contain;
}
.dc-preview-label {
  font-size: 0.68rem;
  color: var(--at-text2);
  padding: 6px 10px;
  border-top: 1px solid var(--at-border);
  text-align: center;
}
.dc-tool-result {
  margin-top: 12px;
  font-size: 0.75rem;
  color: var(--at-text2);
}

/* 模态框 */
.dc-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
}
.dc-modal.open { display: block; }
.dc-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.72);
}
.dc-modal-panel {
  position: relative;
  z-index: 1;
  border-radius: 12px;
  border: 1px solid var(--at-border);
  background: var(--at-bg-elevated);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}

/* PPT 预览窗：默认较大，可拖拽缩放 / 最大化 */
.dc-ppt-preview-panel {
  position: fixed;
  z-index: 101;
  top: 5vh;
  left: 50%;
  transform: translateX(-50%);
  width: min(1180px, 94vw);
  height: min(88vh, 920px);
  min-width: 520px;
  min-height: 420px;
  max-width: 98vw;
  max-height: 98vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  resize: both;
  padding: 0;
}
.dc-ppt-preview-panel.dc-ppt-preview-panel--maximized {
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  transform: none;
  width: 100% !important;
  height: 100% !important;
  max-width: none;
  max-height: none;
  min-width: 0;
  min-height: 0;
  border-radius: 0;
  resize: none;
}
.dc-ppt-preview-head {
  flex-shrink: 0;
  padding: 16px 20px 12px;
  margin-bottom: 0;
  border-bottom: 1px solid var(--at-border);
  cursor: default;
  user-select: none;
}
.dc-ppt-preview-head h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  margin: 0;
  padding-right: 12px;
}
.dc-modal-head-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.dc-ppt-preview-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 14px 20px 16px;
  overflow: hidden;
}
.dc-ppt-preview-info {
  margin: 0 0 6px;
  flex-shrink: 0;
  line-height: 1.5;
}
.dc-ppt-preview-hint {
  margin: 0 0 10px;
  font-size: 0.76rem;
  color: var(--at-text2);
  flex-shrink: 0;
}
.dc-ppt-preview-foot {
  margin-top: 14px;
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}
.dc-ppt-resize-grip {
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 14px;
  height: 14px;
  pointer-events: none;
  opacity: 0.45;
  background:
    linear-gradient(135deg, transparent 50%, var(--at-accent) 50%) 0 100%/7px 7px no-repeat,
    linear-gradient(135deg, transparent 50%, var(--at-accent) 50%) 4px 100%/7px 7px no-repeat,
    linear-gradient(135deg, transparent 50%, var(--at-accent) 50%) 8px 100%/7px 7px no-repeat;
}
.dc-ppt-preview-panel--maximized .dc-ppt-resize-grip { display: none; }

.dc-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.dc-preview-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2vh, 24px);
  padding: 12px;
  border: 1px solid var(--at-border);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.18);
}
.dc-preview-page {
  text-align: center;
}
.dc-preview-page img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 6px;
  border: 1px solid var(--at-border);
  background: #fff;
  display: block;
  margin: 0 auto;
}
.dc-preview-page-label {
  font-size: 0.8rem;
  color: var(--at-text2);
  margin-bottom: 8px;
  text-align: left;
}

@media (max-width: 640px) {
  .dc-ppt-preview-panel {
    top: 0;
    left: 0;
    right: 0;
    transform: none;
    width: 100% !important;
    height: 100% !important;
    max-width: none;
    max-height: none;
    min-width: 0;
    border-radius: 0;
    resize: none;
  }
  .dc-ppt-resize-grip { display: none; }
}

.dc-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--at-text2);
  font-size: 0.85rem;
}

.dc-login-hint {
  width: 100%;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--at-border);
  background: rgba(212, 168, 83, 0.06);
  color: var(--at-text2);
  font-size: 0.82rem;
  margin-bottom: 16px;
}
.dc-login-hint a { color: var(--at-accent); }

@media (max-width: 768px) {
  body.download-center-page .at-cards { grid-template-columns: 1fr; }
  body.download-center-page .dc-cards .at-card {
    min-height: clamp(260px, 42vh, 340px);
  }
  body.download-center-page .dc-cards .at-card-media {
    height: clamp(140px, 26vh, 200px);
  }
  .dc-tools-layout { grid-template-columns: 1fr; }
  .dc-preview-row { grid-template-columns: 1fr; }
}

@media (max-height: 700px) {
  body.download-center-page .dc-cards .at-card-cta {
    display: inline-flex;
  }
}