/**
 * @file components.css
 * @description 门户网站核心组件（导航、Hero、真实 Mac 灵动岛真机还原、特性卡片、接力工作台、架构矩阵、下载中心与页脚）
 */

/* ================= 导航栏 Header ================= */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  height: 64px;
  background: var(--gt-nav-bg);
  backdrop-filter: var(--gt-glass-filter);
  -webkit-backdrop-filter: var(--gt-glass-filter);
  border-bottom: 1px solid var(--gt-border-subtle);
  z-index: 100;
  transition: background-color var(--gt-duration-normal) var(--gt-ease-standard);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--gt-text-primary);
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--gt-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--gt-shadow-sm);
}

.brand-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--gt-card-bg-active);
  color: var(--gt-text-secondary);
  border: 1px solid var(--gt-border);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 0.92rem;
  color: var(--gt-text-secondary);
  font-weight: 500;
  transition: color var(--gt-duration-fast) var(--gt-ease-standard);
}

.nav-links a:hover {
  color: var(--gt-text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 按钮风格 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: var(--gt-radius-pill);
  transition: all var(--gt-duration-fast) var(--gt-ease-standard);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gt-blue);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(10, 132, 255, 0.35);
}

.btn-primary:hover {
  background: var(--gt-blue-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(10, 132, 255, 0.45);
}

.btn-secondary {
  background: var(--gt-card-bg-active);
  color: var(--gt-text-primary);
  border: 1px solid var(--gt-border);
}

.btn-secondary:hover {
  background: var(--gt-card-bg-hover);
  color: var(--gt-text-primary);
  border-color: var(--gt-text-secondary);
}

.btn-icon-only {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
  color: var(--gt-text-secondary);
  border: 1px solid var(--gt-border);
  background: var(--gt-card-bg);
}

.btn-icon-only:hover {
  color: var(--gt-text-primary);
  background: var(--gt-card-bg-hover);
}

/* ================= Hero 区域 ================= */
.hero-section {
  padding-top: clamp(48px, 8vw, 80px);
  padding-bottom: clamp(36px, 5vw, 56px);
  text-align: center;
  position: relative;
}

.hero-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--gt-radius-pill);
  background: var(--gt-card-bg);
  border: 1px solid var(--gt-border);
  color: var(--gt-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: var(--gt-space-lg);
  backdrop-filter: blur(8px);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--gt-green);
  box-shadow: 0 0 10px var(--gt-green);
  animation: pulse-ring 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

@keyframes pulse-ring {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  margin-bottom: var(--gt-space-md);
  line-height: 1.12;
}

.hero-gradient-text {
  background: linear-gradient(135deg, #ffffff 20%, #98989f 60%, var(--gt-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme="light"] .hero-gradient-text {
  background: linear-gradient(135deg, #1d1d1f 25%, #424245 70%, var(--gt-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--gt-text-secondary);
  margin-bottom: var(--gt-space-xl);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: var(--gt-space-2xl);
  flex-wrap: wrap;
}

.platform-chips {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.platform-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--gt-text-tertiary);
  font-weight: 500;
}

/* ================= 真实 Mac 灵动岛真机还原模拟器 ================= */
.island-stage-container {
  margin-top: var(--gt-space-md);
  margin-bottom: var(--gt-space-3xl);
  position: relative;
}

.mac-mockup-frame {
  max-width: 980px;
  margin: 0 auto;
  background: #000000;
  border-radius: var(--gt-radius-xl) var(--gt-radius-xl) 0 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.85);
  overflow: hidden;
  position: relative;
  color: #ffffff;
}

/* 顶部收起态药丸 (Notch Island Compact Pill) */
.island-compact-notch {
  height: 40px;
  background: #000000;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.compact-pill-box {
  background: #000000;
  color: #ffffff;
  border-radius: 0 0 18px 18px;
  padding: 5px 18px;
  min-width: 220px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-top: none;
  font-size: 0.82rem;
  user-select: none;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.8);
  transition: all var(--gt-duration-fast) var(--gt-ease-standard);
}

.compact-pill-box:hover {
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(1px);
}

/* 灵动岛展开后的大面板 (真实真机 1:1 还原) */
.real-island-expanded {
  background: #000000;
  padding: 18px 24px 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-radius: 0 0 var(--gt-radius-xl) var(--gt-radius-xl);
  user-select: none;
  position: relative;
}

/* 1. 顶部状态与时钟行 */
.island-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.island-clock-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cal-date-block {
  width: 40px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
  border: 0.5px solid rgba(255, 255, 255, 0.15);
  border-radius: 9px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.cal-weekday {
  font-size: 10px;
  color: var(--gt-red);
  font-weight: 600;
  line-height: 1;
}

.cal-day-num {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.1;
  font-family: var(--gt-font-mono);
}

.clock-info-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.main-clock-digits {
  font-size: 26px;
  font-weight: 700;
  color: #ffffff;
  font-family: var(--gt-font-mono);
  letter-spacing: -0.02em;
  line-height: 1;
}

.main-clock-digits small {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

.clock-location-sub {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 顶部右侧状态与快捷入口 */
.island-status-chips {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chip-status-listen {
  background: rgba(255, 255, 255, 0.08);
  border: 0.5px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 11.5px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.9);
}

.chip-app-pill {
  background: rgba(255, 255, 255, 0.08);
  border: 0.5px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 11.5px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: #ffffff;
  cursor: pointer;
  transition: background 0.15s;
}

.chip-app-pill:hover {
  background: rgba(255, 255, 255, 0.15);
}

.app-icon-green {
  color: #30d158;
}

.app-icon-blue {
  color: #0a84ff;
}

/* 2. Tab 分段控制器 */
.island-tabs-row {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 3px;
  gap: 4px;
  width: fit-content;
}

.island-tab-btn {
  padding: 5px 18px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.65);
  cursor: pointer;
  transition: all 0.15s ease;
}

.island-tab-btn.active {
  background: rgba(255, 255, 255, 0.22);
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* 3. 实时活动长条 (Live Activity Banner) */
.island-live-banner {
  background: rgba(255, 255, 255, 0.07);
  border: 0.5px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  color: #ffffff;
}

.banner-icon-blue {
  color: var(--gt-blue);
  font-size: 14px;
}

/* 4. 主体三栏内容 */
.island-content-grid {
  display: grid;
  grid-template-columns: 210px 1fr 180px;
  gap: 16px;
  min-height: 380px;
}

/* 左栏：设备与连接 */
.island-col-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.col-heading-group {
  margin-bottom: 4px;
}

.col-main-title {
  font-size: 12.5px;
  font-weight: 600;
  color: #ffffff;
}

.col-sub-note {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
}

.collapsible-header {
  font-size: 11.5px;
  font-weight: 600;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0;
  cursor: pointer;
}

.device-card-item {
  background: rgba(255, 255, 255, 0.06);
  border: 0.5px solid rgba(255, 255, 255, 0.09);
  border-radius: 8px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.device-glyph {
  width: 24px;
  height: 24px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.7);
  flex-shrink: 0;
}

.device-desc-wrap {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.device-name-line {
  font-size: 11.5px;
  font-weight: 600;
  color: #ffffff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.device-status-line {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 1px;
}

.device-refresh-icon {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  font-size: 13px;
  padding: 2px;
  transition: transform 0.2s;
}

.device-refresh-icon:hover {
  color: #ffffff;
  transform: rotate(90deg);
}

.device-bottom-actions {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.8);
  padding-top: 8px;
  border-top: 0.5px solid rgba(255, 255, 255, 0.08);
}

.device-action-row {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.device-action-row:hover {
  color: #ffffff;
}

.text-status-blue {
  color: var(--gt-blue);
  font-weight: 600;
}

/* 中栏：最近接力 · 单击复制 */
.island-col-mid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mid-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.relay-cards-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  max-height: 330px;
}

.relay-item-card {
  background: rgba(255, 255, 255, 0.06);
  border: 0.5px solid rgba(255, 255, 255, 0.1);
  border-radius: 9px;
  padding: 10px 12px;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.relay-item-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.relay-item-card:active {
  transform: scale(0.99);
}

.relay-content-snippet {
  font-size: 12px;
  line-height: 1.4;
  color: #ffffff;
  font-family: inherit;
  margin-bottom: 6px;
  word-break: break-all;
  white-space: pre-wrap;
}

.relay-content-snippet.mono-code {
  font-family: var(--gt-font-mono);
  background: rgba(0, 0, 0, 0.4);
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 11px;
}

.relay-card-source {
  font-size: 10.5px;
  color: rgba(255, 255, 255, 0.5);
  display: flex;
  align-items: center;
  gap: 6px;
}

.relay-copy-feedback {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 10.5px;
  color: var(--gt-green);
  font-weight: 600;
  display: none;
}

/* 右栏：截屏与待办 */
.island-col-right {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.screenshot-card-box {
  background: rgba(255, 255, 255, 0.06);
  border: 0.5px solid rgba(255, 255, 255, 0.1);
  border-radius: 9px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.screenshot-label-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 600;
  color: #ffffff;
}

.green-dot-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gt-green);
  box-shadow: 0 0 6px var(--gt-green);
}

.phone-screen-frame {
  background: #111;
  border-radius: 12px;
  border: 2px solid rgba(255, 255, 255, 0.18);
  height: 140px;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 6px;
}

.phone-notch-cutout {
  width: 34px;
  height: 5px;
  background: #000;
  border-radius: 0 0 4px 4px;
  margin: 0 auto 6px;
}

.phone-chat-mock {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mock-bubble-left {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  padding: 3px 6px;
  font-size: 8px;
  max-width: 80%;
  color: #eee;
}

.mock-bubble-right {
  background: #30d158;
  border-radius: 6px;
  padding: 3px 6px;
  font-size: 8px;
  max-width: 80%;
  margin-left: auto;
  color: #000;
  font-weight: 600;
}

.screenshot-info-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.5);
}

.cloud-img-tag {
  background: rgba(255, 255, 255, 0.1);
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 9px;
}

/* 待办组件 */
.todo-card-box {
  background: rgba(255, 255, 255, 0.06);
  border: 0.5px solid rgba(255, 255, 255, 0.1);
  border-radius: 9px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.todo-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  font-weight: 600;
}

.todo-input-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 4px 8px;
}

.todo-input-field {
  background: none;
  border: none;
  color: #ffffff;
  font-size: 11px;
  width: 100%;
}

.todo-input-field:focus {
  outline: none;
}

.todo-add-btn {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
}

.todo-empty-text {
  font-size: 10.5px;
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
  margin-top: 12px;
  line-height: 1.4;
}

/* 5. 底部收起与指示条 */
.island-footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 0.5px solid rgba(255, 255, 255, 0.08);
}

.island-home-indicator {
  width: 80px;
  height: 3px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 2px;
  margin-left: auto;
  margin-right: auto;
}

.island-collapse-action {
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  background: none;
  border: none;
  transition: color 0.15s;
}

.island-collapse-action:hover {
  color: #ffffff;
}

/* ================= 核心能力网格 (Bento Grid) ================= */
.features-section {
  padding-top: var(--gt-space-3xl);
  padding-bottom: var(--gt-space-3xl);
}

.section-header {
  text-align: center;
  margin-bottom: var(--gt-space-2xl);
}

.section-header h2 {
  margin-bottom: var(--gt-space-sm);
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.bento-card {
  background: var(--gt-card-bg);
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius-lg);
  padding: var(--gt-space-xl);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform var(--gt-duration-normal) var(--gt-ease-standard),
              border-color var(--gt-duration-normal) var(--gt-ease-standard),
              box-shadow var(--gt-duration-normal) var(--gt-ease-standard);
  backdrop-filter: blur(12px);
}

.bento-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: var(--gt-shadow-md);
}

html[data-theme="light"] .bento-card:hover {
  border-color: rgba(0, 0, 0, 0.15);
}

.col-span-8 { grid-column: span 8; }
.col-span-6 { grid-column: span 6; }
.col-span-4 { grid-column: span 4; }
.col-span-12 { grid-column: span 12; }

.card-icon-pill {
  width: 44px;
  height: 44px;
  border-radius: var(--gt-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--gt-space-md);
  font-size: 1.3rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--gt-space-xs);
}

.card-desc {
  font-size: 0.95rem;
  color: var(--gt-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--gt-space-md);
}

.card-visual {
  margin-top: auto;
  border-radius: var(--gt-radius-md);
  background: var(--gt-bg-elevated);
  border: 1px solid var(--gt-border-subtle);
  padding: var(--gt-space-md);
}

/* ================= 交互式接力工作台 (Interactive Relay) ================= */
.relay-playground {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  margin-top: var(--gt-space-lg);
  padding: var(--gt-space-xl);
  background: var(--gt-card-bg);
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius-xl);
}

.relay-node {
  background: var(--gt-bg-elevated);
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius-lg);
  padding: var(--gt-space-lg);
}

.relay-node-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--gt-space-md);
}

.relay-node-title {
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.relay-input-area {
  width: 100%;
  min-height: 80px;
  background: var(--gt-bg-surface);
  border: 1px solid var(--gt-border-subtle);
  border-radius: var(--gt-radius-sm);
  color: var(--gt-text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 10px;
  resize: none;
  margin-bottom: var(--gt-space-sm);
}

.relay-input-area:focus {
  outline: none;
  border-color: var(--gt-blue);
}

.relay-flow-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--gt-blue);
  font-size: 0.8rem;
  font-weight: 600;
}

.relay-pipeline {
  width: 60px;
  height: 4px;
  background: var(--gt-card-bg-active);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.relay-pipeline::after {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 50%;
  height: 100%;
  background: var(--gt-blue);
  border-radius: 2px;
  animation: stream-flow 1.5s infinite linear;
}

@keyframes stream-flow {
  0% { left: -50%; }
  100% { left: 100%; }
}

.relay-receive-box {
  background: var(--gt-bg-surface);
  border: 1px dashed var(--gt-border);
  border-radius: var(--gt-radius-sm);
  padding: var(--gt-space-md);
  min-height: 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  font-size: 0.9rem;
}

/* ================= 云端微服务架构矩阵 (无暴露子域名 / 无外部跳转) ================= */
.ecosystem-section {
  padding-top: var(--gt-space-3xl);
  padding-bottom: var(--gt-space-3xl);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.arch-card {
  background: var(--gt-card-bg);
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius-lg);
  padding: var(--gt-space-xl);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--gt-duration-normal) var(--gt-ease-standard);
  position: relative;
}

.arch-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: var(--gt-shadow-md);
}

html[data-theme="light"] .arch-card:hover {
  border-color: rgba(0, 0, 0, 0.15);
}

.arch-card-top {
  margin-bottom: var(--gt-space-md);
}

.arch-badge-tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--gt-blue);
  background: var(--gt-blue-soft);
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.arch-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--gt-text-primary);
}

.arch-desc {
  font-size: 0.88rem;
  color: var(--gt-text-secondary);
  line-height: 1.55;
}

.arch-card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--gt-space-sm);
  border-top: 1px solid var(--gt-border-subtle);
}

.arch-status-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--gt-text-secondary);
}

.arch-caps-spec {
  font-size: 0.76rem;
  color: var(--gt-text-tertiary);
  font-family: var(--gt-font-mono);
}

/* ================= 下载中心 ================= */
.download-section {
  padding-top: var(--gt-space-3xl);
  padding-bottom: var(--gt-space-3xl);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.download-card {
  background: var(--gt-card-bg);
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius-lg);
  padding: var(--gt-space-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.platform-icon-large {
  width: 56px;
  height: 56px;
  margin-bottom: var(--gt-space-md);
}

.download-platform-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.download-platform-req {
  font-size: 0.82rem;
  color: var(--gt-text-tertiary);
  margin-bottom: var(--gt-space-md);
}

.download-features-list {
  list-style: none;
  font-size: 0.86rem;
  color: var(--gt-text-secondary);
  text-align: left;
  width: 100%;
  margin-bottom: var(--gt-space-lg);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.download-features-list li::before {
  content: '✓';
  color: var(--gt-blue);
  font-weight: 700;
  margin-right: 8px;
}

.download-card .btn {
  width: 100%;
}

/* ================= 页脚 Footer ================= */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--gt-border-subtle);
  background: var(--gt-bg-elevated);
  padding-top: var(--gt-space-3xl);
  padding-bottom: var(--gt-space-2xl);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: var(--gt-space-2xl);
}

.footer-brand p {
  margin-top: var(--gt-space-sm);
  max-width: 320px;
  font-size: 0.88rem;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: var(--gt-space-md);
  color: var(--gt-text-primary);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a,
.footer-col span {
  color: var(--gt-text-secondary);
  font-size: 0.86rem;
}

.footer-col a:hover {
  color: var(--gt-text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--gt-space-lg);
  border-top: 1px solid var(--gt-border-subtle);
  color: var(--gt-text-tertiary);
  font-size: 0.82rem;
}