/* Apollo OS — Portal 门户页（对齐 Apollo-Portal-prompt v2.0） */

:root {
  --portal-bg: linear-gradient(180deg, #fafafa 0%, #f5f5f7 50%, #f0f0f2 100%);
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
  --gradient-text: linear-gradient(90deg, #4f46e5, #7c3aed, #0891b2);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --text-display: #0f172a;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --text-muted: #cbd5e1;
  --font-sans: "DM Sans", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.portal-body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-primary);
  background: #f5f5f7;
  -webkit-font-smoothing: antialiased;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.portal-skip.skip-link {
  position: absolute;
  left: 8px;
  top: 8px;
  padding: 0.5rem 1rem;
  background: var(--text-display);
  color: #fff;
  font-weight: 600;
  border-radius: 8px;
  z-index: 200;
  transform: translateY(-200%);
  transition: transform 0.2s ease;
  text-decoration: none;
}

.portal-skip.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid #6366f1;
  outline-offset: 2px;
}

/* —— Navbar —— */
.portal-header-shell {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-top: env(safe-area-inset-top, 0);
}

.portal-navbar {
  position: relative;
  height: 60px;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.portal-header-shell.scrolled .portal-navbar,
.portal-navbar.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.portal-nav-banner {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition:
    max-height 0.45s cubic-bezier(0.16, 1, 0.3, 1),
    opacity 0.32s ease;
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.07), rgba(255, 255, 255, 0.95));
  border-bottom: 1px solid rgba(99, 102, 241, 0.1);
  pointer-events: none;
}

.portal-header-shell:hover .portal-nav-banner,
.portal-header-shell.is-banner-open .portal-nav-banner {
  max-height: 52px;
  opacity: 1;
  pointer-events: auto;
}

.portal-nav-banner-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 24px 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transform: translateY(-6px);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.portal-header-shell:hover .portal-nav-banner-inner,
.portal-header-shell.is-banner-open .portal-nav-banner-inner {
  transform: translateY(0);
}

.portal-nav-banner-badge {
  flex-shrink: 0;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #4f46e5;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 999px;
  padding: 2px 8px;
}

.portal-nav-banner-text {
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  color: #4338ca;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.portal-nav-banner-tab {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translate(-50%, 50%);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px 4px;
  border: 1px solid rgba(99, 102, 241, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.12);
  color: #6366f1;
  font-size: 11px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.portal-nav-banner-tab:hover,
.portal-header-shell.is-banner-open .portal-nav-banner-tab {
  background: #fff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.18);
}

.portal-nav-banner-tab-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #6366f1;
  animation: portalBannerPulse 2s ease-in-out infinite;
}

.portal-nav-banner-tab-chevron {
  transition: transform 0.25s ease;
}

.portal-header-shell:hover .portal-nav-banner-tab-chevron,
.portal-header-shell.is-banner-open .portal-nav-banner-tab-chevron {
  transform: rotate(180deg);
}

@keyframes portalBannerPulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.55;
    transform: scale(0.85);
  }
}

.portal-nav-container {
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.portal-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  text-decoration: none;
  color: inherit;
}

.portal-logo-icon {
  flex-shrink: 0;
  transition: transform 200ms ease;
}

.portal-logo:hover .portal-logo-icon {
  transform: scale(1.05) rotate(-5deg);
}

.portal-logo-icon svg {
  display: none;
}

.portal-logo-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-display);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.portal-nav-links {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

/* 文档 / 产品等次级页：顶栏为文字链接横排 */
.portal-nav-links:has(> .portal-nav-link) {
  gap: 22px;
  flex-wrap: nowrap;
}

.portal-nav-links > .portal-nav-link {
  flex-shrink: 0;
  white-space: nowrap;
}

.portal-nav-end {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex-shrink: 0;
}

.portal-nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 200ms ease;
}

.portal-nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: width 200ms ease;
}

.portal-nav-link:hover {
  color: var(--text-primary);
}

.portal-nav-link:hover::after {
  width: 100%;
}

.portal-version {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--text-tertiary);
  padding: 4px 9px;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 999px;
  flex-shrink: 0;
}

.portal-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.portal-nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-display);
  border-radius: 1px;
  box-shadow: 0 -6px 0 var(--text-display), 0 6px 0 var(--text-display);
}

/* —— Hero —— */
.portal-hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 64px;
  text-align: center;
  background: var(--portal-bg);
}

.portal-hero-inner {
  width: min(960px, 100%);
}

.portal-announcement {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 100px;
  margin: 0 auto 32px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
  text-decoration: none;
  color: inherit;
}

.portal-announcement:hover {
  background: rgba(99, 102, 241, 0.12);
  transform: translateY(-1px);
}

.portal-announcement-icon {
  color: #6366f1;
  display: flex;
}

.portal-announcement-text {
  font-size: 13px;
  font-weight: 500;
  color: #4f46e5;
}

.portal-announcement-arrow {
  color: #6366f1;
  transition: transform 200ms ease;
  font-size: 14px;
}

.portal-announcement:hover .portal-announcement-arrow {
  transform: translateX(2px);
}

.portal-title-wrapper {
  margin-bottom: 20px;
}

.portal-title-label {
  font-size: clamp(16px, 2.5vw, 18px);
  font-weight: 500;
  color: var(--text-secondary);
  margin: 0 0 8px;
}

.portal-title {
  margin: 0;
  font-size: clamp(2.75rem, 10vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.04em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: titleShine 3s ease-in-out infinite;
}

@keyframes titleShine {
  0%,
  100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.08);
  }
}

.portal-subtitle {
  font-size: clamp(16px, 2.2vw, 20px);
  font-weight: 400;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 48px;
  line-height: 1.6;
}

.portal-tier-switcher {
  display: inline-flex;
  flex-wrap: nowrap;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 28px;
  padding: 4px;
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 14px;
  gap: 4px;
}

.portal-tier-option {
  flex: 0 0 auto;
  border: none;
  background: transparent;
  padding: 10px 20px;
  border-radius: 10px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease;
}

.portal-tier-option:hover {
  color: var(--text-primary);
}

.portal-tier-option:focus-visible {
  outline: 2px solid #6366f1;
  outline-offset: 2px;
}

.portal-tier-option[aria-checked="true"] {
  background: #fff;
  color: var(--text-display);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.portal-cards-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: stretch;
  gap: 24px;
  max-width: 800px;
  width: 100%;
  margin: 0 auto 24px;
  text-align: left;
}

.portal-card {
  position: relative;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 20px;
  padding: 32px;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition:
    transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.3s ease,
    box-shadow 0.4s ease,
    opacity 0.3s ease;
}

/* Lite 与 Pro 槽同高：Pro 的遮罩与卡片共用同一栅格单元，避免「只缩内层、遮罩错位」 */
.portal-cards-container > .portal-card[data-type="lite"] {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}

.portal-cards-container > .portal-card[data-type="lite"] .portal-card-cta {
  margin-top: auto;
}

.portal-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(99, 102, 241, 0.07),
    transparent 40%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.portal-card:hover::before {
  opacity: 1;
}

.portal-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.22);
  box-shadow:
    0 20px 40px -15px rgba(0, 0, 0, 0.1),
    0 0 0 1px rgba(99, 102, 241, 0.1);
}

/* 悬停对比：缩放/变淡作用在 Pro 整槽（含锁定遮罩），不单独缩放内层链接，避免 Pro 卡片与遮罩分层错位 */
.portal-cards-container:has(.portal-card[data-type="lite"]:hover) .portal-card-slot {
  opacity: 0.55;
  transform: scale(0.98);
}

.portal-cards-container:has(.portal-card-pro-link:hover) .portal-card[data-type="lite"] {
  opacity: 0.55;
  transform: scale(0.98);
}

.portal-card-slot {
  position: relative;
  border-radius: 20px;
  min-height: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
}

.portal-card-pro-link {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
  width: 100%;
}

.portal-card-pro-link .portal-card-cta {
  margin-top: auto;
}

.portal-card-slot.is-locked .portal-card-pro-link {
  pointer-events: none;
  cursor: not-allowed;
  background: rgba(255, 255, 255, 0.55);
  border-style: dashed;
  border-color: rgba(0, 0, 0, 0.1);
}

.portal-card-slot.is-locked .portal-card-pro-link:hover {
  transform: none;
  border-color: rgba(0, 0, 0, 0.1);
  box-shadow: none;
}

.portal-card-slot.is-locked .portal-card-pro-link::before {
  opacity: 0;
}

.portal-card-locked-overlay {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 5;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 24px;
  text-align: center;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 20px;
  cursor: not-allowed;
  animation: overlayFadeIn 0.35s ease;
}

.portal-card-slot.is-locked .portal-card-locked-overlay {
  display: flex;
}

@keyframes overlayFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.portal-card-locked-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.portal-card-locked-icon svg {
  width: 24px;
  height: 24px;
  color: #9ca3af;
}

.portal-card-locked-text {
  font-size: 15px;
  font-weight: 600;
  color: #4b5563;
  white-space: nowrap;
}

.portal-card-locked-hint {
  font-size: 13px;
  font-weight: 500;
  color: #9ca3af;
  max-width: 200px;
  line-height: 1.4;
}

.portal-card-slot.is-shake {
  animation: portalCardShake 0.5s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes portalCardShake {
  0%,
  100% {
    transform: translateX(0);
  }
  20% {
    transform: translateX(-6px);
  }
  40% {
    transform: translateX(6px);
  }
  60% {
    transform: translateX(-4px);
  }
  80% {
    transform: translateX(4px);
  }
}

.portal-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

.portal-card-icon-box {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.portal-card[data-type="lite"] .portal-card-icon-box {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
}

.portal-card[data-type="lite"]:hover .portal-card-icon-box {
  transform: scale(1.08) rotate(-5deg);
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.28);
}

.portal-card[data-type="lite"] .portal-card-icon-box svg {
  width: 28px;
  height: 28px;
  color: #2563eb;
}

.portal-card[data-type="pro"] .portal-card-icon-box {
  background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.2);
}

.portal-card[data-type="pro"]:hover .portal-card-icon-box {
  transform: scale(1.08) rotate(5deg);
  box-shadow: 0 12px 32px rgba(139, 92, 246, 0.28);
}

.portal-card[data-type="pro"] .portal-card-icon-box svg {
  width: 28px;
  height: 28px;
  color: #7c3aed;
}

.portal-card-tier {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-tertiary);
  padding: 4px 10px;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  line-height: 1.2;
}

.portal-card-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-display);
  margin: 0 0 8px;
}

.portal-card-subtitle {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  margin: 0 0 20px;
}

.portal-card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.portal-card-feature {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 12px;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 8px;
  transition: background 0.2s ease, color 0.2s ease;
}

.portal-card:hover .portal-card-feature {
  background: rgba(99, 102, 241, 0.08);
  color: #4f46e5;
}

.portal-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: #4f46e5;
  transition: gap 0.2s ease;
}

.portal-card:hover .portal-card-cta {
  gap: 12px;
}

.portal-card-cta-arrow {
  transition: transform 0.3s ease;
}

.portal-card:hover .portal-card-cta-arrow {
  transform: translateX(4px);
}

.portal-tier-hint {
  font-size: 13px;
  color: var(--text-tertiary);
  max-width: 640px;
  margin: 0 auto 0;
  line-height: 1.5;
}

/* —— Showcase —— */
.portal-showcase-section {
  padding: 0 24px 64px;
  background: linear-gradient(180deg, #f0f0f2 0%, #ebebef 100%);
}

.portal-showcase-marks {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 24px;
  max-width: 900px;
  margin: 28px auto 0;
  padding: 0 8px;
}

.portal-showcase-mark {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.portal-showcase-mark-divider {
  width: 4px;
  height: 4px;
  background: var(--text-muted);
  border-radius: 50%;
  flex-shrink: 0;
}

.portal-showcase {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}

.portal-showcase-card {
  position: relative;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 24px;
  overflow: hidden;
  box-shadow:
    0 4px 6px -1px rgba(0, 0, 0, 0.05),
    0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.portal-showcase-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(6, 182, 212, 0.1), transparent);
  pointer-events: none;
}

.portal-showcase-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(40px, 40px);
  }
}

.portal-data-flow {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
}

/* 心电图：单周期一次左→右扫描；波形在左、右各一处跳变，扫完停一拍再整段跳回 */
.portal-ecg-scope {
  --ecg-len: 560;
  --ecg-cycle: 4.6s;
  position: relative;
  width: 100%;
  height: min(42%, 140px);
  min-height: 72px;
}

.portal-ecg-sweep-line {
  position: absolute;
  top: 10%;
  bottom: 10%;
  left: 0;
  width: 1px;
  margin-left: 0;
  border-radius: 1px;
  background: rgba(191, 219, 254, 0.55);
  box-shadow: 0 0 6px rgba(129, 140, 248, 0.32);
  pointer-events: none;
  z-index: 1;
  animation: portalEcgCursor var(--ecg-cycle) linear infinite;
  will-change: left, opacity;
}

.portal-ecg-svg {
  display: block;
  width: 100%;
  height: 100%;
}

.portal-ecg-path {
  stroke: rgba(165, 180, 252, 0.32);
  stroke-width: 1.45;
  stroke-dasharray: var(--ecg-len) var(--ecg-len);
  stroke-dashoffset: var(--ecg-len);
  animation: portalEcgSweep var(--ecg-cycle) linear infinite;
  will-change: stroke-dashoffset;
}

@keyframes portalEcgSweep {
  0% {
    stroke-dashoffset: var(--ecg-len);
  }
  33% {
    stroke-dashoffset: 0;
  }
  71% {
    stroke-dashoffset: 0;
  }
  72.5%,
  100% {
    stroke-dashoffset: var(--ecg-len);
  }
}

@keyframes portalEcgCursor {
  0% {
    left: 0;
    opacity: 0.28;
  }
  6% {
    opacity: 0.62;
  }
  33% {
    left: calc(100% - 1px);
    opacity: 0.52;
  }
  71% {
    left: calc(100% - 1px);
    opacity: 0.45;
  }
  72.5%,
  100% {
    left: 0;
    opacity: 0.28;
  }
}

.portal-showcase-content {
  position: relative;
  z-index: 10;
  padding: 40px 28px 48px;
  text-align: center;
}

.portal-showcase-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 100px;
  margin-bottom: 20px;
}

.portal-showcase-badge-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
  }
  50% {
    opacity: 0.85;
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
}

.portal-showcase-badge-text {
  font-size: 13px;
  font-weight: 600;
  color: #4f46e5;
}

.portal-showcase-title {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
  color: var(--text-display);
  margin: 0 0 12px;
  line-height: 1.3;
}

.portal-showcase-subtitle {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-secondary);
  margin: 0 auto 36px;
  max-width: 480px;
  line-height: 1.55;
}

.portal-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(24px, 6vw, 48px);
}

.portal-stat {
  text-align: center;
  min-width: 88px;
}

.portal-stat-value {
  font-size: clamp(28px, 5vw, 36px);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 4px;
}

.portal-stat-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.portal-stat-divider {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.1), transparent);
  flex-shrink: 0;
}

/* —— Footer —— */
.portal-footer {
  padding: 40px 24px 48px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  background: #f5f5f7;
}

.portal-footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.portal-footer-main {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  gap: 32px;
  width: 100%;
}

.portal-footer-brand {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0;
  justify-self: start;
}

.portal-footer-logo {
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.portal-footer-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  justify-self: center;
}

.portal-footer-center-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.portal-footer-center-link:hover {
  color: #6366f1;
}

.portal-social-icons {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
  margin-left: 0;
  padding-left: 16px;
  border-left: 1px solid rgba(0, 0, 0, 0.08);
}

.portal-social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  color: #a1a1aa;
  background: transparent;
  transition: background 0.2s ease;
  cursor: default;
}

.portal-social-icon img {
  display: block;
  width: 18px;
  height: 18px;
  filter: grayscale(1);
  opacity: 0.55;
  transition: opacity 0.2s ease;
}

.portal-social-icon:hover {
  background: rgba(0, 0, 0, 0.04);
}

.portal-social-icon:hover img {
  opacity: 0.85;
}

.portal-footer-legal {
  text-align: right;
  margin-left: auto;
}

.portal-footer-copyright {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-tertiary);
  margin: 0 0 6px;
}

.portal-footer-demo-links {
  margin: 0;
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.portal-footer-demo-links a {
  color: var(--accent-primary, #6366f1);
  font-weight: 600;
  text-decoration: none;
}

.portal-footer-demo-links a:hover {
  text-decoration: underline;
}

/* —— 产品页 —— */
.portal-products-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.portal-products-item {
  padding: 20px 22px;
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  background: #fff;
}

.portal-products-name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-display, #111);
}

.portal-products-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* —— 入场动画 —— */
.portal-animate {
  opacity: 0;
  transform: translateY(24px);
}

.portal-animate.is-visible {
  animation: slideInUp 0.75s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.portal-animate[data-animate]:nth-child(1).is-visible {
  animation-delay: 0.05s;
}
.portal-animate[data-animate]:nth-child(2).is-visible {
  animation-delay: 0.12s;
}
.portal-animate[data-animate]:nth-child(3).is-visible {
  animation-delay: 0.18s;
}
.portal-animate[data-animate]:nth-child(4).is-visible {
  animation-delay: 0.24s;
}
.portal-animate[data-animate]:nth-child(5).is-visible {
  animation-delay: 0.3s;
}

@keyframes slideInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .portal-nav-banner,
  .portal-nav-banner-inner,
  .portal-nav-banner-tab-chevron {
    transition: none;
  }

  .portal-nav-banner-tab-dot {
    animation: none;
  }
}

@media (max-width: 768px) {
  .portal-nav-banner-text {
    white-space: normal;
    text-align: center;
  }

  .portal-footer-main {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }

  .portal-footer-brand {
    flex-direction: row;
    justify-content: center;
    justify-self: center;
  }

  .portal-footer-center {
    justify-self: center;
    gap: 28px;
  }

  .portal-footer-legal {
    text-align: center;
    margin-left: 0;
    justify-self: center;
  }

  .portal-showcase-mark-divider {
    display: none;
  }

  .portal-showcase-marks {
    flex-direction: column;
    gap: 10px;
  }

  .portal-footer-demo-links {
    justify-content: center;
  }

  .portal-nav-toggle {
    display: inline-flex;
  }

  .portal-nav-links {
    position: absolute;
    right: 20px;
    top: calc(100% + 8px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    min-width: 200px;
    padding: 8px;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: var(--glass-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition:
      opacity 0.2s ease,
      transform 0.2s ease,
      visibility 0.2s;
  }

  .portal-nav-links:has(> .portal-nav-link) {
    gap: 0;
  }

  .portal-nav-links.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .portal-nav-link {
    padding: 10px 12px;
    border-radius: 8px;
  }

  .portal-nav-link:hover {
    background: rgba(0, 0, 0, 0.04);
  }

  .portal-nav-link::after {
    display: none;
  }

  .portal-nav-end {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    margin-left: 0;
  }

  .portal-version {
    margin: 8px 12px 4px;
    text-align: center;
    align-self: center;
  }

  .portal-nav-container {
    position: relative;
  }

  .portal-cards-container {
    grid-template-columns: 1fr;
  }

  .portal-cards-container:has(.portal-card[data-type="lite"]:hover) .portal-card-slot,
  .portal-cards-container:has(.portal-card-pro-link:hover) .portal-card[data-type="lite"] {
    opacity: 1;
    transform: none;
  }

  .portal-stat-divider {
    display: none;
  }

  .portal-stats {
    gap: 28px;
  }
}

.portal-nav-link:hover {
  color: var(--text-display);
}

.portal-nav-link.is-active {
  color: var(--text-display);
  font-weight: 600;
}

/* —— 文档中心 —— */
.portal-docs-main {
  padding: 48px 20px 72px;
}

.portal-docs-inner {
  max-width: 880px;
  margin: 0 auto;
}

.portal-docs-hero {
  margin-bottom: 40px;
}

.portal-docs-badge {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  color: #4338ca;
  background: rgba(99, 102, 241, 0.12);
  border-radius: 999px;
}

.portal-docs-hero h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.portal-docs-lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-muted);
}

.portal-docs-section {
  margin-bottom: 36px;
}

.portal-docs-section h2 {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 700;
}

.portal-docs-section-note {
  margin: -8px 0 16px;
  font-size: 14px;
  color: var(--text-muted);
}

.portal-docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.portal-docs-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
  padding: 18px 18px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  background: #fff;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.12s;
}

.portal-docs-card:hover {
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  transform: translateY(-1px);
}

.portal-docs-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-display);
}

.portal-docs-card-desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-muted);
  flex: 1;
}

.portal-docs-card-action {
  font-size: 13px;
  font-weight: 600;
  color: #6366f1;
}

.portal-docs-footer-note {
  margin: 8px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .portal-title,
  .portal-showcase-grid,
  .portal-ecg-path,
  .portal-ecg-sweep-line,
  .portal-showcase-badge-dot {
    animation: none !important;
  }

  .portal-ecg-path {
    stroke-dasharray: none;
    stroke-dashoffset: 0;
  }

  .portal-ecg-sweep-line {
    opacity: 0;
  }

  .portal-card-locked-overlay {
    animation: none !important;
  }

  .portal-card-slot.is-shake {
    animation: none !important;
  }

  .portal-animate {
    opacity: 1;
    transform: none;
  }

  .portal-animate.is-visible {
    animation: none;
  }

  .portal-card,
  .portal-logo-icon,
  .portal-card-icon-box {
    transition: none;
  }
}