/* ==========================================================================
   Hh AI — Apple Design System (Cupertino Aesthetic)
   Minimalist, Luxury, Restrained Motion, Soft Shadows, Generous Whitespace
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --sf-font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Plus Jakarta Sans", "Inter", "PingFang SC", "Hiragino Sans GB", "MiSans", "Microsoft YaHei", sans-serif;
  --apple-canvas: #f5f5f7;
  --apple-surface: #ffffff;
  --apple-surface-secondary: #fbfbfd;
  --apple-subtle: #f0f0f2;
  --apple-text-primary: #1d1d1f;
  --apple-text-secondary: #6e6e73;
  --apple-text-tertiary: #a1a1a6;
  --apple-link: #0071e3;
  --apple-link-hover: #0077ed;
  --apple-border: rgba(0, 0, 0, 0.08);
  --apple-border-light: rgba(0, 0, 0, 0.04);
  --apple-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --apple-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
  --apple-shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.08);
  --apple-shadow-lift: 0 24px 50px -12px rgba(0, 0, 0, 0.12), 0 6px 16px rgba(0, 0, 0, 0.04);
  --apple-radius-pill: 980px;
  --apple-radius-card: 22px;
  --apple-radius-sm: 12px;
  --apple-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --apple-spring: cubic-bezier(0.25, 1, 0.5, 1);
}

/* Global Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--apple-canvas);
  color: var(--apple-text-primary);
  font-family: var(--sf-font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.55;
  letter-spacing: -0.015em;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11", "tnum" 1;
}

/* ==========================================================================
   1. 及肩磨砂导航 (Apple Shoulder Navigation)
   ========================================================================== */
header {
  position: sticky;
  top: 0;
  z-index: 999;
  height: 52px;
  background: rgba(255, 255, 255, 0.82);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--apple-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(24px, calc((100vw - 1200px) / 2));
  transition: background 0.3s var(--apple-ease);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--apple-text-primary);
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9.5px;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.18), 0 1px 3px rgba(0, 0, 0, 0.08);
  transition: transform 0.25s var(--apple-ease), box-shadow 0.25s var(--apple-ease);
}

.brand:hover .brand-mark {
  transform: scale(1.08);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.22);
}

.brand:active .brand-mark {
  transform: scale(0.96);
  transition: transform 0.08s var(--apple-spring);
}

.brand-name {
  font-size: 16px;
  font-weight: 750;
  letter-spacing: -0.025em;
  color: var(--apple-text-primary);
}

header nav {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.03);
  padding: 4px;
  border-radius: var(--apple-radius-pill);
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.nav-item {
  background: none;
  border: none;
  color: var(--apple-text-secondary);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--apple-radius-pill);
  cursor: pointer;
  transition: all 0.22s var(--apple-ease);
  letter-spacing: -0.01em;
  will-change: transform;
}

.nav-item:hover {
  color: var(--apple-text-primary);
  background: rgba(255, 255, 255, 0.8);
}

.nav-item:active {
  transform: scale(0.95);
  transition: transform 0.08s var(--apple-spring);
}

.nav-item.active {
  color: var(--apple-text-primary);
  font-weight: 600;
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

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

.btn-contact {
  background: rgba(0, 0, 0, 0.05);
  border: none;
  color: var(--apple-text-primary);
  font-size: 12.5px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: var(--apple-radius-pill);
  cursor: pointer;
  transition: all 0.22s var(--apple-ease);
}

.btn-contact:hover {
  background: rgba(0, 0, 0, 0.09);
  transform: translateY(-1px);
}

.btn-contact:active {
  transform: scale(0.96);
  transition: transform 0.08s var(--apple-spring);
}

/* ==========================================================================
   2. Hero 巨幕留白区 (Apple Grand Whitespace)
   ========================================================================== */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.hero {
  padding: 84px 20px 52px;
  text-align: center;
}

.hero-brand-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px 5px 6px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--apple-radius-pill);
  font-size: 13px;
  font-weight: 550;
  color: var(--apple-text-secondary);
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s var(--apple-ease);
}

.hero-brand-pill:hover {
  background: #ffffff;
  border-color: rgba(0, 113, 227, 0.3);
  color: var(--apple-text-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 113, 227, 0.12);
}

.hero-brand-icon {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.18);
  display: block;
}

.hero-brand-text {
  letter-spacing: -0.01em;
}

.hero-eyebrow {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #86868b;
  text-transform: uppercase;
  margin: 0 0 16px;
}

.hero h1 {
  font-size: 58px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.06;
  margin: 0 0 16px;
  background: linear-gradient(180deg, #1d1d1f 25%, #424245 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 19.5px;
  font-weight: 400;
  color: var(--apple-text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.5;
  letter-spacing: -0.015em;
}

.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 32px;
  padding: 14px 32px;
  background: var(--apple-surface);
  border: 1px solid var(--apple-border);
  border-radius: var(--apple-radius-pill);
  box-shadow: var(--apple-shadow-sm);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat strong {
  font-size: 18px;
  font-weight: 700;
  color: var(--apple-text-primary);
  letter-spacing: -0.02em;
}

.stat span {
  font-size: 11px;
  color: var(--apple-text-secondary);
  margin-top: 2px;
}

.stat-sep {
  width: 1px;
  height: 24px;
  background: var(--apple-border);
}

/* ==========================================================================
   3. 苹果大图商品展台 (Showcase Bento Cards)
   ========================================================================== */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin: 20px 0 50px;
}

.showcase-card {
  background: var(--apple-surface);
  border: 1px solid rgba(0, 0, 0, 0.07);
  border-radius: var(--apple-radius-card);
  padding: 34px 26px 28px;
  min-height: 570px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03), 0 1px 2px rgba(0, 0, 0, 0.02);
  transition: transform 0.35s var(--apple-ease), box-shadow 0.35s var(--apple-ease), border-color 0.35s var(--apple-ease);
  will-change: transform, box-shadow;
}

.showcase-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--apple-shadow-lift);
  border-color: rgba(0, 0, 0, 0.12);
}

.card-tier {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--apple-text-secondary);
  background: var(--apple-subtle);
  padding: 3px 8px;
  border-radius: var(--apple-radius-pill);
}

.card-logo {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  overflow: hidden;
  background: #111113;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.15), 0 2px 6px rgba(0, 0, 0, 0.07);
  transition: transform 0.35s var(--apple-ease), box-shadow 0.35s var(--apple-ease);
  will-change: transform, box-shadow;
}

.showcase-card:hover .card-logo {
  transform: scale(1.06) translateY(-2px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.2);
}

.card-logo img, .product-metallic-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 18px;
}

.showcase-card h3 {
  font-size: 23px;
  font-weight: 750;
  color: var(--apple-text-primary);
  margin: 0 0 5px;
  letter-spacing: -0.025em;
}

.card-spec-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-wrap: wrap;
  margin: 4px 0 16px;
}

.spec-tag {
  font-size: 10.5px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--apple-text-primary);
  background: var(--apple-subtle);
  border: 1px solid rgba(0, 0, 0, 0.06);
  padding: 2.5px 7px;
  border-radius: var(--apple-radius-pill);
  letter-spacing: -0.01em;
  transition: all 0.2s var(--apple-ease);
}

.spec-tag:hover {
  transform: translateY(-1px);
  filter: brightness(0.97);
}

.spec-tag.tag-primary {
  background: rgba(0, 113, 227, 0.08);
  color: #0071e3;
  border-color: rgba(0, 113, 227, 0.18);
}

.spec-tag.tag-accent {
  background: rgba(0, 0, 0, 0.05);
  color: #1d1d1f;
  border-color: rgba(0, 0, 0, 0.09);
}

.spec-tag.tag-success {
  background: rgba(52, 199, 89, 0.1);
  color: #248a3d;
  border-color: rgba(52, 199, 89, 0.24);
}

.benefits-included-note {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--apple-text-primary);
  margin: 0 0 12px;
  text-align: left;
  width: 100%;
  letter-spacing: -0.01em;
}

.card-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}

.card-benefits li {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 13.5px;
  color: var(--apple-text-primary);
  line-height: 1.45;
  letter-spacing: -0.012em;
  padding: 2.5px 4px;
  margin: 0 -4px;
  border-radius: 6px;
  background: transparent;
  border: none;
  transition: transform 0.22s var(--apple-ease), background-color 0.22s var(--apple-ease);
}

.card-benefits li:hover {
  background: rgba(0, 0, 0, 0.025);
  transform: translateX(3px);
}

.benefit-icon {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  color: var(--apple-link);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.22s var(--apple-ease), color 0.22s var(--apple-ease);
}

.card-benefits li:hover .benefit-icon {
  transform: scale(1.15);
  color: var(--apple-link-hover);
}

.benefit-icon svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.8;
  display: block;
}

.benefit-text {
  flex: 1;
  color: #1d1d1f;
  font-size: 13.5px;
  font-weight: 480;
  letter-spacing: -0.012em;
}

.card-bottom {
  margin-top: auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 22px;
  border-top: 1px solid var(--apple-border-light);
}

.card-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.price-num {
  font-size: 40px;
  font-weight: 750;
  color: var(--apple-text-primary);
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  display: inline-flex;
  align-items: baseline;
}

.price-num small {
  font-size: 20px;
  font-weight: 600;
  margin-right: 2px;
}

.price-period {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--apple-text-secondary);
}

.price-tbd {
  font-size: 20px;
  color: var(--apple-text-secondary);
  font-weight: 600;
}

/* Apple High-Contrast Pill Button */
.apple-btn {
  background: #1d1d1f;
  color: #ffffff;
  border: none;
  border-radius: var(--apple-radius-pill);
  padding: 13px 28px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform 0.25s var(--apple-ease), background-color 0.25s var(--apple-ease), box-shadow 0.25s var(--apple-ease);
  width: 100%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  will-change: transform;
}

.apple-btn:hover {
  background: #000000;
  transform: translateY(-1.5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.apple-btn:active {
  transform: scale(0.965);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.08s var(--apple-spring);
}

.apple-btn.primary {
  background: var(--apple-link);
}

.apple-btn.primary:hover {
  background: var(--apple-link-hover);
}

.catalog-footer {
  text-align: center;
  font-size: 13px;
  color: var(--apple-text-secondary);
  margin-top: 16px;
}

/* ==========================================================================
   4. 四大服务保障 (Trust Ribbon)
   ========================================================================== */
.trust-ribbon {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: var(--apple-surface);
  border: 1px solid var(--apple-border);
  border-radius: var(--apple-radius-card);
  padding: 28px 32px;
  margin: 40px 0 60px;
  box-shadow: var(--apple-shadow-sm);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 12px;
  border-radius: 14px;
  transition: transform 0.25s var(--apple-ease), background-color 0.25s var(--apple-ease);
}

.trust-item:hover {
  background: rgba(0, 0, 0, 0.02);
  transform: translateY(-2px);
}

.trust-icon-circle {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--apple-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  transition: transform 0.3s var(--apple-ease), background-color 0.3s var(--apple-ease);
}

.trust-item:hover .trust-icon-circle {
  transform: scale(1.08);
  background: rgba(0, 113, 227, 0.08);
}

.trust-item strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--apple-text-primary);
  letter-spacing: -0.01em;
  margin-bottom: 2px;
}

.trust-item span {
  display: block;
  font-size: 12px;
  color: var(--apple-text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   5. 实用功能视图 (Utility Views: Orders & Help)
   ========================================================================== */
@keyframes appleViewEnter {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.996);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

#shop-view:not([hidden]),
#orders-view:not([hidden]),
#help-view:not([hidden]) {
  animation: appleViewEnter 0.35s var(--apple-ease);
}

.utility-view {
  background: var(--apple-surface);
  border: 1px solid var(--apple-border);
  border-radius: var(--apple-radius-card);
  padding: 48px;
  max-width: 760px;
  margin: 40px auto 80px;
  box-shadow: var(--apple-shadow-md);
}

.section-eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--apple-link);
  margin: 0 0 10px;
  text-transform: uppercase;
}

.utility-view h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--apple-text-primary);
  margin: 0 0 8px;
}

.section-desc {
  font-size: 15px;
  color: var(--apple-text-secondary);
  margin: 0 0 36px;
  line-height: 1.6;
}

/* 4步履约进度条 */
.order-stepper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--apple-surface-secondary);
  border: 1px solid var(--apple-border);
  border-radius: 16px;
  padding: 18px 24px;
  margin-bottom: 32px;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.step-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--apple-subtle);
  color: var(--apple-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.step-text {
  font-size: 11px;
  color: var(--apple-text-secondary);
  font-weight: 500;
}

.step-item.active .step-num, .step-item.completed .step-num {
  background: var(--apple-text-primary);
  color: #ffffff;
}

.step-item.active .step-text, .step-item.completed .step-text {
  color: var(--apple-text-primary);
  font-weight: 600;
}

.step-line {
  flex: 1;
  height: 2px;
  background: var(--apple-border);
  margin: 0 10px 18px;
}

.step-line.active {
  background: var(--apple-text-primary);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--apple-text-secondary);
  margin-bottom: 8px;
}

.form-group input {
  width: 100%;
  padding: 14px 18px;
  background: var(--apple-surface-secondary);
  border: 1px solid var(--apple-border);
  border-radius: 12px;
  font-size: 15px;
  color: var(--apple-text-primary);
  outline: none;
  font-family: inherit;
  transition: border-color 0.2s var(--apple-ease), box-shadow 0.2s var(--apple-ease), background-color 0.2s var(--apple-ease);
}

.form-group input:focus {
  background: #ffffff;
  border-color: var(--apple-link);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.14);
}

.query-submit-btn {
  width: 100%;
  padding: 14px;
}

.muted {
  font-size: 13px;
  color: var(--apple-text-secondary);
  margin-top: 16px;
  line-height: 1.6;
}

.orders-utility-view {
  margin: 20px auto 60px !important;
  max-width: 820px;
}

#order-result {
  margin: 0;
  padding: 0;
}

#order-result:empty {
  display: none;
}

#order-result:not(:empty) {
  margin: 0 0 20px 0;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

/* 订单检索卡片与折叠控制 */
.query-lookup-card {
  transition: all 0.3s var(--apple-ease);
}

.query-toggle-trigger {
  text-align: center;
  margin: 16px 0 24px;
}

.btn-toggle-lookup {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 13px 20px;
  background: var(--apple-surface-secondary);
  border: 1px dashed var(--apple-border);
  border-radius: var(--apple-radius-card);
  color: var(--apple-text-secondary);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--apple-ease);
}

.btn-toggle-lookup:hover {
  background: #ffffff;
  border-color: var(--apple-text-primary);
  color: var(--apple-text-primary);
  box-shadow: var(--apple-shadow-sm);
  transform: translateY(-1px);
}

.btn-toggle-lookup .toggle-action-text {
  color: var(--apple-link);
  font-weight: 600;
}

.query-card-header {
  margin-bottom: 20px;
}

.query-card-header .section-eyebrow {
  margin-bottom: 6px;
}

.query-card-header h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}

.query-card-header .section-desc {
  font-size: 14px;
  color: var(--apple-text-secondary);
  margin: 0;
}

/* ==========================================================================
   6. 选购指南 (Apple Disclosure Accordion)
   ========================================================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

details {
  background: var(--apple-surface-secondary);
  border: 1px solid var(--apple-border);
  border-radius: 16px;
  padding: 20px 24px;
  transition: background-color 0.25s var(--apple-ease), border-color 0.25s var(--apple-ease), box-shadow 0.25s var(--apple-ease);
}

details:hover {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.12);
}

details[open] {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.14);
  box-shadow: var(--apple-shadow-sm);
}

summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--apple-text-primary);
  cursor: pointer;
  list-style: none;
  letter-spacing: -0.015em;
  user-select: none;
}

summary::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  color: var(--apple-text-secondary);
  transition: transform 0.35s var(--apple-ease), color 0.2s var(--apple-ease);
  display: flex;
}

details[open] .faq-chevron {
  transform: rotate(180deg);
  color: var(--apple-link);
}

details p, .faq-body {
  color: #48484a;
  font-size: 14px;
  line-height: 1.7;
  margin: 16px 0 4px;
  padding-top: 14px;
  border-top: 1px solid var(--apple-border-light);
}

.faq-body ol {
  margin: 8px 0;
  padding-left: 20px;
}

.faq-body li {
  margin-bottom: 6px;
}

/* ==========================================================================
   7. 弹窗对话框 (Apple Clean Modals)
   ========================================================================== */
dialog {
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 24px;
  padding: 36px;
  max-width: 540px;
  width: calc(100% - 40px);
  background: #ffffff;
  box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.25), 0 10px 24px rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.35);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: backdrop-filter 0.3s var(--apple-ease);
}

dialog[open] {
  animation: appleModalIn 0.35s var(--apple-ease) forwards;
}

@keyframes appleModalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(12px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--apple-subtle);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--apple-text-secondary);
  cursor: pointer;
  transition: all 0.2s var(--apple-ease);
}

.close:hover {
  background: rgba(0, 0, 0, 0.1);
  color: var(--apple-text-primary);
}

.dialog-header h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 6px;
}

.dialog-header p {
  color: var(--apple-text-secondary);
  font-size: 14px;
  margin: 0 0 20px;
}

.contact-info-card {
  background: var(--apple-surface-secondary);
  border: 1px solid var(--apple-border);
  border-radius: 14px;
  padding: 18px 20px;
  margin-bottom: 16px;
}

.contact-info-card strong {
  display: block;
  font-size: 15px;
  margin-bottom: 4px;
}

.contact-info-card span {
  font-size: 13px;
  color: var(--apple-text-secondary);
}

/* ==========================================================================
   8. 页脚 (Apple Minimalist Footer)
   ========================================================================== */
footer {
  border-top: 1px solid var(--apple-border);
  margin-top: 80px;
  padding: 32px 0 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--apple-text-secondary);
}

.footer-brand {
  font-size: 14px;
  font-weight: 700;
  color: var(--apple-text-primary);
}

footer p {
  margin: 4px 0 0;
}

/* ==========================================================================
   9. 账户中心、会员状态条与钱包样式 (Apple Unified Account)
   ========================================================================== */
.user-header-area {
  display: flex;
  align-items: center;
}

.btn-auth-entry {
  background: var(--apple-text-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--apple-radius-pill);
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s var(--apple-ease);
}

.btn-auth-entry:hover {
  background: #333336;
}

.user-session-bar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-profile-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 0, 0, 0.05);
  border: none;
  border-radius: var(--apple-radius-pill);
  padding: 5px 12px;
  cursor: pointer;
  color: var(--apple-text-primary);
  font-size: 12px;
  font-weight: 600;
}

.user-avatar-badge {
  width: 18px;
  height: 18px;
  background: var(--apple-text-primary);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
}

.wallet-balance-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(0, 113, 227, 0.08);
  border: 1px solid rgba(0, 113, 227, 0.15);
  border-radius: var(--apple-radius-pill);
  padding: 4px 10px;
  cursor: pointer;
  color: var(--apple-link);
  font-size: 12px;
  font-weight: 600;
}

.btn-user-logout {
  background: transparent;
  border: none;
  color: var(--apple-text-secondary);
  font-size: 11px;
  cursor: pointer;
  padding: 4px 8px;
}

.btn-user-logout:hover {
  color: #b91c1c;
}

/* ==========================================================================
   10. 支付成功 & 自动发货卡密与自动对卡兑换 (Dark SaaS Premium)
   ========================================================================== */
.paid-success-panel {
  text-align: left;
  position: relative;
}

.paid-success-icon {
  font-size: 38px;
  line-height: 1;
  margin-bottom: 14px;
  display: inline-block;
  filter: drop-shadow(0 0 16px rgba(16, 185, 129, 0.45));
}

.paid-success-panel .checkout-heading {
  font-size: 13px;
  font-weight: 600;
  color: #8e8e93;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.paid-success-panel h2 {
  font-size: 22px;
  font-weight: 750;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.paid-success-tip {
  font-size: 13.5px;
  color: #a1a1aa;
  margin: 0 0 22px;
  line-height: 1.5;
}

.paid-success-actions {
  display: flex;
  gap: 12px;
  margin-top: 22px;
  flex-wrap: wrap;
}

.paid-success-actions button,
.paid-success-actions a {
  flex: 1;
  min-width: 180px;
  text-align: center;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.paid-success-actions .secondary.wide {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #d1d1d6;
  border-radius: 9px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.paid-success-actions .secondary.wide:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.18);
}

.fulfillment-redeem-container {
  background: #0a0a0c;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 20px;
  padding: 28px 30px;
  margin: 0 0 20px 0;
  text-align: left;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  color: #e5e5ea;
}

/* 首屏极简订单状态概览条 */
.fulfillment-order-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 14px;
  padding: 12px 18px;
  margin-bottom: 20px;
  font-size: 13px;
  flex-wrap: wrap;
}

.order-bar-main {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.order-bar-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.order-bar-id, .order-bar-price {
  color: #8e8e93;
  font-size: 12.5px;
}

.order-bar-id b {
  color: #d1d1d6;
  font-weight: 600;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.order-bar-price b {
  color: #f87171;
  font-weight: 700;
}

.btn-refresh-pill {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #d1d1d6;
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-refresh-pill:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
  color: #fff;
  transform: translateY(-1px);
}

.redeem-header {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.redeem-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 10px;
}

.redeem-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: #f5f5f7;
  margin: 0 0 6px;
  letter-spacing: -0.015em;
}

.redeem-header p {
  font-size: 13px;
  color: #8e8e93;
  margin: 0;
  line-height: 1.55;
}

/* 提货卡密盒子 — 高亮核心区域 */
.card-secret-box {
  background: linear-gradient(135deg, #111115 0%, #0d1117 100%);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 16px;
  padding: 20px 24px;
  margin-bottom: 18px;
  color: #ffffff;
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.06), 0 4px 16px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.card-secret-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.4), rgba(168, 85, 247, 0.4), transparent);
}

.secret-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: #8e8e93;
  margin-bottom: 12px;
  font-weight: 600;
}

.secret-status-tag {
  color: #34d399;
  font-size: 11px;
  font-weight: 600;
}

.secret-val-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.secret-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 1px;
  word-break: break-all;
  user-select: all;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.08);
}

.btn-copy-secret {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #ffffff;
  border: none;
  border-radius: 20px;
  padding: 9px 20px;
  font-size: 13px;
  font-weight: 650;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.25);
}

.btn-copy-secret:hover {
  background: linear-gradient(135deg, #818cf8, #a78bfa);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
  transform: translateY(-1px);
}

/* 自动对卡网站预留槽位 */
.redeem-portal-slot.ready {
  border-style: solid;
  border-color: rgba(16, 185, 129, 0.2);
  background: rgba(16, 185, 129, 0.04);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.04);
}

.slot-notice-badge.ready {
  background: rgba(16, 185, 129, 0.12) !important;
  color: #34d399 !important;
  border: 1px solid rgba(16, 185, 129, 0.25) !important;
}

.redeem-portal-slot {
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 18px 22px;
  margin-bottom: 20px;
}

.slot-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: #8e8e93;
  font-weight: 600;
  margin-bottom: 12px;
}

.slot-notice-badge {
  background: rgba(180, 83, 9, 0.15);
  color: #fbbf24;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 700;
}

.slot-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.portal-link {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 11px 18px;
  border-radius: 12px;
  flex: 1;
  min-width: 240px;
  transition: all 0.2s ease;
}

.portal-link:hover {
  border-color: rgba(99, 102, 241, 0.35);
  background: rgba(99, 102, 241, 0.06);
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.08);
}

.portal-url-text {
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 13px;
  font-weight: 600;
  color: #818cf8;
  word-break: break-all;
}

.portal-go-tag {
  font-size: 11px;
  color: #8e8e93;
  margin-left: auto;
  font-weight: 600;
}

.btn-copy-portal {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #d1d1d6;
  border-radius: 12px;
  padding: 9px 18px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-copy-portal:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
  color: #fff;
}

.slot-tip {
  font-size: 11px;
  color: #636366;
  margin-top: 10px;
}

/* 3步极速兑换指引 */
.redeem-guide-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 20px;
}

.guide-title {
  font-size: 14px;
  font-weight: 700;
  color: #f5f5f7;
  margin-bottom: 16px;
}

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.guide-step-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.step-badge {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15));
  color: #a5b4fc;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 8px;
  flex-shrink: 0;
  margin-top: 1px;
  border: 1px solid rgba(99, 102, 241, 0.12);
}

.step-content strong {
  display: block;
  font-size: 13.5px;
  color: #e5e5ea;
  margin-bottom: 3px;
  font-weight: 650;
}

.step-content p {
  font-size: 12px;
  color: #8e8e93;
  margin: 0;
  line-height: 1.55;
}

.redeem-warranty-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 18px;
  font-size: 12px;
  color: #636366;
}

.warranty-badge-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.badge-item {
  font-size: 11px;
  font-weight: 600;
  color: #d1d1d6;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 4px 10px;
  border-radius: 8px;
}

/* ==========================================================================
   11. 响应式适配 (Mobile & Tablet)
   ========================================================================== */
@media (max-width: 1024px) {
  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .trust-ribbon {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  header {
    height: auto;
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 10px;
  }
  header nav {
    order: 3;
    width: 100%;
    justify-content: space-around;
    gap: 8px;
  }
  .hero {
    padding: 40px 10px 30px;
  }
  .hero h1 {
    font-size: 36px;
  }
  .hero-sub {
    font-size: 16px;
  }
  .hero-stats {
    flex-direction: row;
    padding: 10px 16px;
    gap: 16px;
    width: 100%;
    justify-content: space-between;
  }
  .stat strong {
    font-size: 15px;
  }
  .stat span {
    font-size: 10px;
  }
  .showcase-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .showcase-card {
    padding: 32px 24px 24px;
  }
  .trust-ribbon {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 20px;
  }
  .utility-view {
    padding: 28px 20px;
    margin: 20px auto 40px;
  }
  .orders-utility-view {
    padding: 12px 14px !important;
    margin: 10px auto 30px !important;
  }
  .fulfillment-redeem-container {
    padding: 18px 16px;
    border-radius: 16px;
    margin: 0 0 16px 0;
  }
  .fulfillment-order-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    margin-bottom: 12px;
    font-size: 11.5px;
  }
  .order-bar-main {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
  }
  .order-bar-badge {
    font-size: 10.5px;
    padding: 2px 7px;
  }
  .order-bar-id {
    font-size: 11.5px;
  }
  .order-bar-price {
    font-size: 11.5px;
  }
  .btn-refresh-pill {
    padding: 3px 8px;
    font-size: 11px;
    flex-shrink: 0;
  }
  .redeem-header {
    margin-bottom: 12px;
    padding-bottom: 10px;
  }
  .redeem-header h3 {
    font-size: 16px;
    margin: 0 0 2px;
  }
  .redeem-header p {
    font-size: 12px;
    line-height: 1.45;
  }
  .card-secret-box {
    padding: 14px 16px;
    margin-bottom: 12px;
    border-radius: 14px;
  }
  .secret-label {
    margin-bottom: 8px;
    font-size: 11px;
  }
  .secret-code {
    font-size: 16.5px;
    letter-spacing: 0.2px;
  }
  .btn-copy-secret {
    padding: 7px 14px;
    font-size: 12px;
    width: 100%;
    margin-top: 4px;
  }
  .redeem-portal-slot {
    padding: 14px 16px;
    margin-bottom: 14px;
    border-radius: 14px;
  }
  .slot-label {
    font-size: 11px;
    margin-bottom: 8px;
  }
  .portal-link {
    padding: 8px 12px;
    min-width: 0;
    width: 100%;
    display: flex;
    align-items: center;
    overflow: hidden;
  }
  .portal-url-text {
    font-size: 11.5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .portal-go-tag {
    display: none;
  }
  .btn-copy-portal {
    padding: 7px 12px;
    font-size: 11.5px;
    width: 100%;
  }
  .btn-toggle-lookup {
    flex-direction: column;
    gap: 4px;
    padding: 11px 14px;
    font-size: 12.5px;
  }
  .order-stepper {
    padding: 14px 16px;
  }
  footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* 库存状态提示胶囊 (有货 / 缺货) */
.card-stock-badge {
  position: absolute;
  top: 15px;
  left: 15px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  letter-spacing: 0.02em;
  z-index: 2;
  transition: all 0.2s ease;
}

.card-stock-badge.badge-in-stock {
  background: rgba(52, 199, 89, 0.12);
  color: #248a3d;
  border: 1px solid rgba(52, 199, 89, 0.25);
}

.card-stock-badge.badge-sold-out {
  background: rgba(142, 142, 147, 0.12);
  color: #8e8e93;
  border: 1px solid rgba(142, 142, 147, 0.25);
}

.stock-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.stock-dot.dot-green {
  background-color: #34c759;
  box-shadow: 0 0 6px rgba(52, 199, 89, 0.6);
  animation: stockPulse 2s infinite;
}

.stock-dot.dot-gray {
  background-color: #8e8e93;
}

@keyframes stockPulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.showcase-card.is-out-of-stock {
  opacity: 0.78;
}

.apple-btn.is-disabled,
.apple-btn:disabled {
  background: #e5e5ea !important;
  color: #8e8e93 !important;
  cursor: not-allowed !important;
  box-shadow: none !important;
  transform: none !important;
}