/* 臻享换电 - batterybox 页面样式 */
@font-face {
  font-family: "NotoSansSC";
  src: url("../fonts/NotoSansSC-VariableFont_wght_2.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --font-sans: "NotoSansSC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --max-w: 1440px;
  --radius: 1rem;

  --background: #0a0c10;
  --foreground: #f0f2f8;
  --destructive: #e45757;
  --border: rgba(255, 138, 31, 0.15);
  --chart-1: #ff8a1f;
  --chart-2: #4d7cfe;
  --chart-3: #35b76b;
  --chart-4: #f6b64b;
  --chart-5: #a98bff;

  --hero-bg: #060810;
  --hero-surface: #0e1120;
  --section-bg: #f0f5ff;
  --section-alt: #e8f0fe;
  --orange-glow: rgba(255, 138, 31, 0.18);
  --tag-bg: rgba(255, 138, 31, 0.12);
  --nav-bg: rgba(6, 8, 16, 0.85);
  --divider: rgba(37, 99, 235, 0.12);
  --orange-primary: #ff8a1f;
  --orange-light: #ffb060;
  --blue-deep: #1e3a8a;
  --blue-vivid: #2563eb;
  --text-bright: #ffffff;
  --text-sub: #c8d4f0;
  --text-dim: #8896b8;
  --light-text-bright: #0f172a;
  --light-text-sub: #334155;
  --light-text-dim: #64748b;
  --light-feature-card: rgba(255, 255, 255, 0.92);
  --light-feature-border: rgba(37, 99, 235, 0.18);
  --light-tag-bg: rgba(255, 138, 31, 0.1);
  --light-tag-text: #c05e00;
  --light-section-line: rgba(37, 99, 235, 0.08);
  --light-accent: rgba(37, 99, 235, 0.06);
  --light-badge-bg: rgba(37, 99, 235, 0.08);
  --light-badge-border: rgba(37, 99, 235, 0.25);
  --light-badge-text: #1d4ed8;

  --tag-1-bg: rgba(255, 138, 31, 0.18);
  --tag-1-text: #ffaa55;
  --tag-1-border: rgba(255, 138, 31, 0.45);
  --tag-2-bg: rgba(77, 124, 254, 0.18);
  --tag-2-text: #7aa4ff;
  --tag-2-border: rgba(77, 124, 254, 0.45);
  --tag-3-bg: rgba(53, 183, 107, 0.18);
  --tag-3-text: #5de69a;
  --tag-3-border: rgba(53, 183, 107, 0.45);
  --tag-4-bg: rgba(169, 139, 255, 0.18);
  --tag-4-text: #c4a8ff;
  --tag-4-border: rgba(169, 139, 255, 0.45);
  --tag-5-bg: rgba(246, 182, 75, 0.18);
  --tag-5-text: #f6c85a;
  --tag-5-border: rgba(246, 182, 75, 0.45);

  --scene-1: #ff8a1f;
  --scene-2: #4d7cfe;
  --scene-3: #35b76b;
  --scene-4: #a98bff;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body.bb-page {
  font-family: var(--font-sans);
  background: var(--hero-bg);
  color: var(--foreground);
  overflow-x: hidden;
  line-height: 1.5;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.bb-container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (min-width: 768px) {
  .bb-container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

@media (min-width: 1025px) {
  .bb-container {
    padding-left: 80px;
    padding-right: 80px;
  }
}

.text-gradient-orange {
  background: linear-gradient(90deg, var(--orange-primary), var(--orange-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 按钮 */
.btn-orange-glow {
  background: var(--orange-primary);
  color: #fff;
  border-radius: 9999px;
  padding: 0.75rem 2rem;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px rgba(255, 138, 31, 0.45);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
}

.btn-orange-glow:hover {
  box-shadow: 0 0 36px rgba(255, 138, 31, 0.7);
  transform: translateY(-2px) scale(1.03);
}

.btn-outline-orange {
  background: transparent;
  color: var(--orange-primary);
  border: 1.5px solid var(--orange-primary);
  border-radius: 9999px;
  padding: 0.75rem 2rem;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-outline-orange:hover {
  background: rgba(255, 138, 31, 0.12);
  box-shadow: 0 0 20px rgba(255, 138, 31, 0.25);
  transform: translateY(-2px);
}

/* 滚动显现 */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }

/* 动画 */
@keyframes float-pulse {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes particle-float {
  0%, 100% { transform: translateY(0) translateX(0) rotate(0deg); opacity: 0.55; }
  25% { transform: translateY(-45px) translateX(18px) rotate(90deg); opacity: 0.9; }
  50% { transform: translateY(-20px) translateX(-12px) rotate(180deg); opacity: 0.4; }
  75% { transform: translateY(35px) translateX(22px) rotate(270deg); opacity: 0.8; }
}

@keyframes particle-float-b {
  0%, 100% { transform: translateY(0) translateX(0) scale(1); opacity: 0.6; }
  30% { transform: translateY(-60px) translateX(-25px) scale(1.5); opacity: 1; }
  60% { transform: translateY(30px) translateX(30px) scale(0.7); opacity: 0.35; }
}

@keyframes particle-drift {
  0% { transform: translate(0, 0) rotate(0deg) scale(1); opacity: 0.5; }
  50% { transform: translate(40px, -40px) rotate(216deg) scale(1.2); opacity: 1; }
  100% { transform: translate(0, 0) rotate(360deg) scale(1); opacity: 0.5; }
}

@keyframes particle-scatter {
  0% { transform: translate(0, 0) scale(1); opacity: 0; }
  15% { opacity: 1; }
  100% { transform: var(--scatter-translate) scale(0.2); opacity: 0; }
}

@keyframes particle-scatter-glow {
  0% { transform: translate(-50%, -50%) scale(0.3); opacity: 0; }
  20% { opacity: 0.6; }
  100% { transform: translate(calc(-50% + var(--scatter-x)), calc(-50% + var(--scatter-y))) scale(0); opacity: 0; }
}

@keyframes beam-slide {
  0% { transform: translateX(-100%) skewX(-20deg); opacity: 0; }
  10% { opacity: 0.6; }
  100% { transform: translateX(200%) skewX(-20deg); opacity: 0; }
}

@keyframes scan-line {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== 页头 ===== */
.bb-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: all 0.4s ease;
  border-bottom: 1px solid transparent;
}

.bb-header.is-scrolled,
.bb-header.is-menu-open {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--divider);
  background: var(--nav-bg);
}

.bb-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

@media (min-width: 768px) {
  .bb-header-inner { height: 64px; }
}

@media (min-width: 1025px) {
  .bb-header-inner { height: 72px; }
}

.bb-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-bright);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .bb-logo { font-size: 18px; }
}

@media (min-width: 1025px) {
  .bb-logo { font-size: 20px; }
}

.bb-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--orange-primary), var(--orange-light));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 14px rgba(255, 138, 31, 0.5);
  flex-shrink: 0;
}

.bb-nav-desktop {
  display: none;
  align-items: center;
  gap: 8px;
}

@media (min-width: 1025px) {
  .bb-nav-desktop { display: flex; }
}

.bb-nav-desktop button,
.bb-nav-tablet button {
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}

.bb-nav-desktop button:hover,
.bb-nav-tablet button:hover {
  color: var(--orange-primary);
  background: var(--tag-bg);
}

.bb-nav-tablet {
  display: none;
  align-items: center;
  gap: 4px;
}

@media (min-width: 768px) and (max-width: 1024px) {
  .bb-nav-tablet { display: flex; }
  .bb-header-cta-desktop { display: none; }
}

.bb-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bb-header-cta-desktop {
  display: none;
}

@media (min-width: 1025px) {
  .bb-header-cta-desktop {
    display: inline-flex;
    padding: 10px 24px;
    font-size: 14px;
  }
}

.bb-nav-tablet .btn-orange-glow {
  padding: 8px 16px;
  font-size: 13px;
  margin-left: 4px;
}

.bb-menu-toggle {
  display: flex;
  padding: 6px;
  border-radius: 8px;
  color: var(--text-bright);
}

@media (min-width: 768px) {
  .bb-menu-toggle { display: none; }
}

.bb-menu-toggle .icon-close { display: none; }
.bb-header.is-menu-open .bb-menu-toggle .icon-menu { display: none; }
.bb-header.is-menu-open .bb-menu-toggle .icon-close { display: block; }

.bb-mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.38s cubic-bezier(0.4, 0, 0.2, 1);
}

.bb-header.is-menu-open .bb-mobile-menu {
  max-height: 480px;
  border-top: 1px solid var(--divider);
}

.bb-mobile-menu-inner {
  padding: 12px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bb-mobile-menu-inner button {
  color: var(--text-sub);
  font-size: 16px;
  font-weight: 600;
  padding: 13px 12px;
  border-radius: 10px;
  text-align: left;
  transition: color 0.2s, background 0.2s;
}

.bb-mobile-menu-inner button:hover {
  color: var(--orange-primary);
  background: var(--tag-bg);
}

.bb-mobile-divider {
  height: 1px;
  background: var(--divider);
  margin: 8px 0;
}

.bb-mobile-menu .btn-orange-glow {
  width: 100%;
  justify-content: center;
  padding: 14px 24px;
  font-size: 15px;
}

/* ===== Hero ===== */
#hero {
  position: relative;
  min-height: 700px;
  height: 100vh;
  background: var(--hero-bg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hero-bg-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-bg-gradient {
  background:
    radial-gradient(ellipse 70% 60% at 65% 50%, rgba(255, 138, 31, 0.1) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 20% 30%, rgba(77, 124, 254, 0.09) 0%, transparent 60%);
}

.hero-bg-grid {
  opacity: 0.09;
  background-image:
    linear-gradient(var(--divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--divider) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-particle {
  position: absolute;
  border-radius: 50%;
}

.hero-beam {
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: linear-gradient(90deg, transparent 0%, var(--orange-primary) 40%, var(--orange-light) 60%, transparent 100%);
  opacity: 0;
  animation: beam-slide 6s linear infinite;
  pointer-events: none;
}

.hero-beam:nth-child(1) { top: 15%; animation-delay: 0s; }
.hero-beam:nth-child(2) { top: 43%; animation-delay: 2.8s; animation-duration: 8.5s; }
.hero-beam:nth-child(3) { top: 71%; animation-delay: 5.6s; animation-duration: 11s; }

/* Hero layouts */
.hero-layout-mobile { display: flex; flex-direction: column; flex: 1; position: relative; z-index: 1; }
.hero-layout-tablet { display: none; flex-direction: column; flex: 1; position: relative; z-index: 1; }
.hero-layout-desktop { display: none; flex: 1; position: relative; z-index: 1; align-items: center; padding-top: 100px; padding-bottom: 110px; }

@media (min-width: 768px) and (max-width: 1024px) {
  .hero-layout-mobile { display: none; }
  .hero-layout-tablet { display: flex; }
}

@media (min-width: 1025px) {
  .hero-layout-mobile { display: none; }
  .hero-layout-desktop { display: flex; }
}

.hero-zone-title {
  flex: 5 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 72px;
}

.hero-zone-title-inner {
  width: 100%;
  padding: 0 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-eyebrow {
  font-size: 14px;
  color: var(--orange-primary);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.hero-eyebrow-line {
  display: inline-block;
  width: 18px;
  height: 2px;
  background: var(--orange-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

.hero-title {
  font-size: 26px;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-bright);
  letter-spacing: 0.04em;
}

@media (min-width: 768px) {
  .hero-title { font-size: 28px; }
}

@media (min-width: 1025px) {
  .hero-title { font-size: 40px; line-height: 1.28; margin-bottom: 28px; letter-spacing: 0.06em; }
  .hero-eyebrow { font-size: 18px; margin-bottom: 14px; gap: 10px; }
  .hero-eyebrow-line { width: 22px; }
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  justify-content: center;
}

.hero-tag {
  border-radius: 9999px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

@media (min-width: 1025px) {
  .hero-tags { margin-bottom: 40px; }
  .hero-tag { padding: 5px 16px; font-size: 13px; }
}

.hero-tag--1 { background: var(--tag-1-bg); color: var(--tag-1-text); border: 1px solid var(--tag-1-border); }
.hero-tag--2 { background: var(--tag-2-bg); color: var(--tag-2-text); border: 1px solid var(--tag-2-border); }
.hero-tag--3 { background: var(--tag-3-bg); color: var(--tag-3-text); border: 1px solid var(--tag-3-border); }
.hero-tag--4 { background: var(--tag-4-bg); color: var(--tag-4-text); border: 1px solid var(--tag-4-border); }
.hero-tag--5 { background: var(--tag-5-bg); color: var(--tag-5-text); border: 1px solid var(--tag-5-border); }

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-actions .btn-orange-glow,
.hero-actions .btn-outline-orange {
  font-size: 14px;
  padding: 11px 20px;
}

@media (min-width: 1025px) {
  .hero-actions { gap: 12px; }
  .hero-actions .btn-orange-glow,
  .hero-actions .btn-outline-orange { font-size: 1rem; padding: 0.75rem 2rem; }
}

.hero-marquee-zone {
  flex: 2.5 0 0;
  position: relative;
  overflow: hidden;
}

.hero-marquee {
  overflow: hidden;
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
}

.hero-marquee-fade {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: linear-gradient(90deg, var(--hero-bg) 0%, transparent 14%, transparent 86%, var(--hero-bg) 100%);
}

.hero-marquee-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 80% 60% at 50% 60%, var(--orange-glow) 0%, transparent 70%);
}

.hero-marquee-track {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  will-change: transform;
  padding-bottom: 8px;
}

.hero-marquee-item {
  flex-shrink: 0;
  width: 96px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.hero-marquee-item img {
  width: 96px;
  height: 215px;
  object-fit: contain;
  filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.55));
  user-select: none;
  pointer-events: none;
}

.hero-marquee-item span {
  font-size: 11px;
  color: var(--text-dim);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.hero-stats-zone {
  flex: 2 0 0;
  padding: 0 16px 12px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.hero-stats-bar {
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

.hero-stats-grid {
  display: flex;
  flex-wrap: wrap;
}

.hero-stat {
  flex: 0 0 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 7px 6px;
}

.hero-stat:nth-child(odd) { border-right: 1px solid var(--border); }
.hero-stat:nth-child(-n+2) { border-bottom: 1px solid var(--border); }

.hero-stat-value-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
}

.hero-stat-value {
  font-size: 16px;
  font-weight: 900;
  color: var(--orange-primary);
  line-height: 1;
}

.hero-stat-label {
  font-size: 9px;
  color: var(--text-dim);
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
}

/* Tablet hero */
.hero-tablet-text {
  flex: 0 0 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 40px 0;
}

.hero-tablet-text-inner {
  max-width: 640px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-tablet-products {
  flex: 0 0 50%;
  display: flex;
  flex-direction: column;
}

.hero-orbit-wrap {
  flex: 0 0 66.666%;
  position: relative;
  overflow: hidden;
}

.hero-orbit-glow {
  position: absolute;
  left: 50%;
  top: 55%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(255, 138, 31, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-orbit-ring {
  position: absolute;
  left: 50%;
  top: 55%;
  transform: translate(-50%, -50%) rotateX(75deg);
  width: 560px;
  height: 560px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 138, 31, 0.18);
  pointer-events: none;
}

.hero-orbit-center {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0;
  height: 0;
}

.hero-orbit-pulse {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 31, 0.12) 0%, transparent 70%);
  animation: float-pulse 3s ease-in-out infinite;
  pointer-events: none;
}

.hero-orbit-product {
  position: absolute;
  transform: translate(-50%, -50%);
  transition: none;
}

.hero-orbit-product img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.6));
  pointer-events: none;
  user-select: none;
}

.hero-tablet-stats {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 32px;
}

.hero-tablet-stats .hero-stat {
  flex: 1;
  border-right: 1px solid var(--border);
  border-bottom: none;
  padding: 0 10px;
}

.hero-tablet-stats .hero-stat:last-child { border-right: none; }
.hero-tablet-stats .hero-stats-grid { flex-wrap: nowrap; justify-content: space-between; }
.hero-tablet-stats .hero-stat { flex: 1; flex-basis: auto; }
.hero-tablet-stats .hero-stat-value { font-size: 18px; }
.hero-tablet-stats .hero-stat-label { font-size: 10px; }

/* Desktop hero */
.hero-desktop-inner {
  display: flex;
  align-items: center;
  gap: 0;
  height: 100%;
  width: 100%;
}

.hero-desktop-text {
  flex: 0 0 520px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-desktop-text .hero-zone-title-inner,
.hero-desktop-text .hero-tablet-text-inner {
  padding: 0;
  text-align: left;
  align-items: flex-start;
}

.hero-desktop-text .hero-tags,
.hero-desktop-text .hero-actions {
  justify-content: flex-start;
}

.hero-desktop-orbit {
  flex: 1;
  position: relative;
  height: 100%;
  min-height: 400px;
}

.hero-desktop-orbit .hero-orbit-glow {
  width: 675px;
  height: 110px;
}

.hero-desktop-orbit .hero-orbit-ring {
  width: 656px;
  height: 656px;
}

.hero-desktop-orbit .hero-orbit-pulse {
  width: 180px;
  height: 180px;
}

.hero-stats-desktop {
  position: absolute;
  bottom: 60px;
  left: 0;
  right: 0;
  z-index: 2;
}

.hero-stats-desktop .hero-stats-bar { padding-top: 18px; }
.hero-stats-desktop .hero-stats-grid { flex-wrap: nowrap; justify-content: space-between; }
.hero-stats-desktop .hero-stat {
  flex: 1;
  flex-basis: auto;
  border-right: 1px solid var(--border);
  border-bottom: none;
  padding: 0 24px;
}
.hero-stats-desktop .hero-stat:last-child { border-right: none; }
.hero-stats-desktop .hero-stat-value { font-size: 26px; }
.hero-stats-desktop .hero-stat-label { font-size: 11px; }

.hero-scroll-hint {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0.4;
  animation: float-pulse 2.5s ease-in-out infinite;
  pointer-events: none;
  z-index: 3;
}

.hero-scroll-mouse {
  width: 20px;
  height: 32px;
  border: 1.5px solid var(--text-dim);
  border-radius: 10px;
  display: flex;
  justify-content: center;
  padding-top: 4px;
}

.hero-scroll-dot {
  width: 3px;
  height: 8px;
  background: var(--orange-primary);
  border-radius: 9999px;
  animation: float-pulse 1.5s ease-in-out infinite;
}

.hero-enter .hero-zone-title-inner,
.hero-enter .hero-tablet-text-inner,
.hero-enter .hero-desktop-text {
  opacity: 1;
  transform: none;
}

.hero-zone-title-inner,
.hero-tablet-text-inner,
.hero-desktop-text {
  opacity: 0;
  transform: translateY(-24px);
  transition: all 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-desktop-text {
  transform: translateX(-40px);
}

.hero-enter .hero-desktop-text {
  transform: none;
}

/* ===== 通用区块 ===== */
.bb-section {
  position: relative;
  overflow: hidden;
}

.bb-section--light {
  background: var(--section-bg);
  padding: 60px 0;
}

.bb-section--alt {
  background: var(--section-alt);
  padding: 60px 0;
}

@media (min-width: 768px) {
  .bb-section--light,
  .bb-section--alt { padding: 70px 0; }
}

@media (min-width: 1025px) {
  .bb-section--light,
  .bb-section--alt { padding: 100px 0; }
}

.bb-section-glow-top {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(255, 138, 31, 0.05) 0%, transparent 60%);
}

.bb-section-header {
  text-align: center;
  margin-bottom: 36px;
}

@media (min-width: 768px) {
  .bb-section-header { margin-bottom: 48px; }
}

@media (min-width: 1025px) {
  .bb-section-header { margin-bottom: 64px; }
}

.bb-section-title {
  font-size: 24px;
  font-weight: 900;
  color: var(--light-text-bright);
  line-height: 1.3;
  max-width: 760px;
  margin: 0 auto 12px;
}

@media (min-width: 768px) {
  .bb-section-title { font-size: 28px; }
}

@media (min-width: 1025px) {
  .bb-section-title { font-size: 36px; }
}

.bb-section-desc {
  font-size: 13px;
  color: var(--light-text-dim);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto;
}

@media (min-width: 1025px) {
  .bb-section-desc { font-size: 15px; }
}

/* ===== 使用场景 ===== */
.scenes-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@media (min-width: 768px) {
  .scenes-grid {
    flex-direction: row;
    gap: 14px;
  }
}

@media (min-width: 1025px) {
  .scenes-grid { gap: 24px; }
}

.scene-card {
  flex: 1;
  background: var(--light-feature-card);
  border: 1px solid var(--light-feature-border);
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.scene-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(255, 138, 31, 0.15);
}

.scene-card-accent {
  position: absolute;
  z-index: 2;
  background: linear-gradient(90deg, transparent, currentColor, transparent);
  opacity: 0.5;
}

.scene-card--mobile {
  display: flex;
  flex-direction: row;
  align-items: stretch;
}

.scene-card--mobile .scene-card-accent {
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, transparent, currentColor, transparent);
}

.scene-card-illust {
  display: none;
  width: 100%;
  height: 140px;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .scene-card--mobile { display: block; flex-direction: column; }
  .scene-card--mobile .scene-card-accent {
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: 3px;
    background: linear-gradient(90deg, transparent, currentColor, transparent);
  }
  .scene-card-illust { display: block; height: 180px; }
}

.scene-card-illust svg {
  width: 100%;
  height: 100%;
}

.scene-card-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 22px;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 3;
}

.scene-card:hover .scene-card-overlay { opacity: 1; }

.scene-card-overlay p {
  font-size: 13.5px;
  color: var(--text-bright);
  line-height: 1.85;
  text-align: center;
  font-weight: 500;
  margin: 0;
}

.scene-card-body {
  padding: 16px 16px 16px 20px;
  flex: 1;
}

@media (min-width: 768px) {
  .scene-card-body { padding: 20px 24px 24px; }
}

.scene-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.scene-card-icon {
  width: 38px;
  height: 38px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

@media (min-width: 1025px) {
  .scene-card-icon { width: 46px; height: 46px; }
}

.scene-card-stat {
  border-radius: 10px;
  padding: 4px 10px;
  text-align: right;
}

.scene-card-stat-num {
  font-size: 15px;
  font-weight: 900;
  line-height: 1.2;
}

.scene-card-stat-label {
  font-size: 10px;
  color: var(--light-text-dim);
  line-height: 1.2;
  margin-top: 2px;
}

.scene-card-subtitle {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 4px;
  line-height: 1.3;
}

.scene-card-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--light-text-bright);
  line-height: 1.4;
  margin: 0 0 6px;
}

@media (min-width: 1025px) {
  .scene-card-subtitle { font-size: 17px; }
  .scene-card-title { font-size: 22px; margin-bottom: 0; }
}

.scene-card-desc-mobile {
  font-size: 12px;
  color: var(--light-text-sub);
  line-height: 1.7;
  margin: 0;
}

@media (min-width: 768px) {
  .scene-card-desc-mobile { display: none; }
}

/* ===== 换电平台 ===== */
.platform-frame {
  margin-bottom: 32px;
  text-align: center;
}

@media (min-width: 1025px) {
  .platform-frame { margin-bottom: 52px; }
}

.platform-frame img {
  width: 100%;
  max-width: 960px;
  border-radius: 20px;
  display: inline-block;
  object-fit: contain;
}

.deploy-grid {
  display: none;
  gap: 16px;
  margin-bottom: 48px;
  position: relative;
}

@media (min-width: 768px) {
  .deploy-grid {
    display: flex;
    flex-direction: row;
  }
}

@media (min-width: 1025px) {
  .deploy-grid { gap: 24px; margin-bottom: 72px; }
}

.deploy-card-wrap {
  flex: 1;
  position: relative;
}

.deploy-tooltip {
  position: absolute;
  bottom: calc(100% + 16px);
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  width: 100%;
  max-width: 300px;
  background: var(--light-feature-card);
  border: 1.5px solid var(--orange-primary);
  border-radius: 18px;
  padding: 18px 22px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease, transform 0.32s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 30;
}

.deploy-tooltip p {
  font-size: 15px;
  color: var(--light-text-sub);
  line-height: 1.85;
  margin: 0;
}

.deploy-tooltip-arrow {
  position: absolute;
  bottom: -9px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 16px;
  height: 16px;
  background: var(--light-feature-card);
  border-right: 1.5px solid var(--orange-primary);
  border-bottom: 1.5px solid var(--orange-primary);
}

.deploy-card-wrap:hover .deploy-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.deploy-card {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid var(--light-feature-border);
  background: var(--light-feature-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 22px 28px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.deploy-card-wrap:hover .deploy-card {
  border-width: 1.5px;
}

.deploy-card-top-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 20px 20px 0 0;
  background: linear-gradient(90deg, transparent 0%, var(--accent-color, var(--orange-primary)) 50%, transparent 100%);
  opacity: 0.5;
}

.deploy-card h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--light-text-bright);
  margin-bottom: 4px;
  line-height: 1.25;
  text-align: center;
}

.deploy-card-sub {
  font-size: 15px;
  color: var(--light-text-sub);
  font-weight: 600;
  text-align: center;
}

.deploy-card-tag {
  margin-top: 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--light-tag-text);
  background: var(--light-tag-bg);
  border: 1px solid rgba(255, 138, 31, 0.35);
  border-radius: 9999px;
  padding: 3px 12px;
  text-align: center;
}

/* 移动端部署 Tab */
.deploy-tabs-mobile {
  display: block;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .deploy-tabs-mobile { display: none; }
}

.tab-bar {
  display: flex;
  background: var(--light-feature-card);
  border: 1px solid var(--light-feature-border);
  border-radius: 14px;
  padding: 4px;
  gap: 4px;
  margin-bottom: 16px;
}

.tab-bar button {
  flex: 1;
  padding: 10px 6px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.25s ease;
  color: var(--light-text-sub);
  white-space: nowrap;
}

.tab-bar button.is-active {
  font-weight: 800;
  color: var(--light-feature-card);
}

.tab-panel-card {
  background: var(--light-feature-card);
  border-radius: 16px;
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.tab-panel-card-top-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 16px 16px 0 0;
  background: linear-gradient(90deg, transparent, var(--accent-color, var(--orange-primary)) 50%, transparent);
}

.tab-panel-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.tab-panel-head-body {
  flex: 1;
  min-width: 0;
}

.tab-panel-head-body .tab-panel-title {
  display: block;
  font-size: 17px;
  font-weight: 800;
  color: var(--light-text-bright);
  line-height: 1.2;
  margin-bottom: 2px;
}

.tab-panel-head-body .tab-panel-subtitle {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--light-text-dim);
}

.tab-panel-tag {
  margin-left: auto;
  font-size: 11px;
  font-weight: 700;
  color: var(--orange-primary);
  background: var(--light-tag-bg);
  border: 1px solid rgba(255, 138, 31, 0.35);
  border-radius: 9999px;
  padding: 3px 10px;
  flex-shrink: 0;
}

.tab-panel-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--accent-color, var(--orange-primary)) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-color, var(--orange-primary)) 30%, transparent);
}

.tab-panel-icon svg {
  display: block;
  width: 18px;
  height: 18px;
}

.tab-panel-head--ability {
  margin-bottom: 12px;
}

.tab-panel-head--ability .tab-panel-head-title {
  flex: 1;
  min-width: 0;
}

.tab-panel-head--ability .tab-panel-title {
  font-size: 17px;
  font-weight: 800;
  color: var(--light-text-bright);
  margin-bottom: 0;
}

.tab-panel-head--ability + .tab-panel-desc {
  padding-top: 12px;
  border-top: 1px solid rgba(255, 138, 31, 0.15);
}

.tab-panel-desc {
  font-size: 14px;
  color: var(--light-text-sub);
  line-height: 1.8;
  margin: 0;
}

.platform-columns {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

@media (min-width: 768px) {
  .platform-columns {
    flex-direction: row;
    gap: 24px;
    align-items: stretch;
  }
}

@media (min-width: 1025px) {
  .platform-columns { gap: 32px; }
}

.platform-col-left {
  flex: 0 0 100%;
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .platform-col-left { flex: 0 0 calc(40% - 16px); }
}

.platform-subhead {
  margin-bottom: 20px;
}

.platform-subhead-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.platform-subhead-bar {
  width: 4px;
  height: 26px;
  border-radius: 9999px;
  flex-shrink: 0;
}

.platform-subhead h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--light-text-bright);
  margin: 0;
}

@media (min-width: 1025px) {
  .platform-subhead h3 { font-size: 24px; }
}

.platform-subhead p {
  font-size: 13px;
  color: var(--light-text-dim);
  line-height: 1.7;
  margin: 0;
  padding-left: 14px;
}

.ability-list {
  display: none;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

@media (min-width: 768px) {
  .ability-list { display: flex; }
}

.ability-card {
  background: var(--light-feature-card);
  border: 1px solid var(--light-feature-border);
  border-radius: 16px;
  padding: 18px 22px 20px;
  transition: all 0.28s ease;
  cursor: default;
}

.ability-card.is-hovered {
  background: linear-gradient(135deg, rgba(255, 138, 31, 0.1), rgba(255, 138, 31, 0.02));
  border: 1.5px solid rgba(255, 138, 31, 0.4);
}

.ability-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}

.ability-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: rgba(100, 116, 139, 0.08);
  border: 1px solid rgba(100, 116, 139, 0.15);
  transition: all 0.28s ease;
  color: var(--light-text-dim);
}

.ability-card.is-hovered .ability-card-icon {
  background: var(--light-tag-bg);
  border-color: rgba(255, 138, 31, 0.3);
}

.ability-card-title {
  flex: 1;
  font-size: 18px;
  font-weight: 700;
  color: var(--light-text-sub);
  transition: color 0.28s ease;
}

.ability-card.is-hovered .ability-card-title {
  color: var(--light-text-bright);
}

.ability-card-desc {
  font-size: 15px;
  color: var(--light-text-dim);
  line-height: 1.7;
  padding-left: 58px;
  transition: color 0.28s ease;
}

.ability-card.is-hovered .ability-card-desc {
  color: var(--light-text-sub);
}

.ability-tabs-mobile {
  display: block;
}

@media (min-width: 768px) {
  .ability-tabs-mobile { display: none; }
}

.ability-tab-grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.ability-tab-row {
  display: flex;
  gap: 6px;
}

.ability-tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--light-feature-card);
  border: 1px solid var(--light-feature-border);
  border-radius: 12px;
  transition: all 0.22s ease;
}

.ability-tab-btn.is-active {
  background: var(--light-tag-bg);
  border: 1.5px solid rgba(255, 138, 31, 0.55);
}

.ability-tab-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(100, 116, 139, 0.08);
  transition: all 0.22s ease;
}

.ability-tab-icon svg {
  display: block;
  width: 13px;
  height: 13px;
}

.ability-tab-btn.is-active .ability-tab-icon {
  background: rgba(255, 138, 31, 0.18);
}

.ability-tab-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--light-text-sub);
  line-height: 1.25;
  text-align: left;
}

.ability-tab-btn.is-active .ability-tab-label {
  font-weight: 700;
  color: var(--orange-primary);
}

.platform-divider {
  display: none;
  width: 1px;
  background: var(--light-section-line);
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .platform-divider { display: block; }
}

.platform-col-right {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* 模块侧栏 */
.modules-shell {
  display: none;
  flex: 1;
  min-height: 380px;
  background: var(--light-feature-card);
  border: 1px solid var(--light-feature-border);
  border-radius: 20px;
  overflow: hidden;
}

@media (min-width: 768px) {
  .modules-shell { display: flex; }
}

@media (min-width: 1025px) {
  .modules-shell { min-height: 440px; }
}

.modules-sidebar {
  width: 160px;
  flex-shrink: 0;
  border-right: 1px solid var(--light-section-line);
  display: flex;
  flex-direction: column;
  padding: 8px 0;
  overflow-y: auto;
}

@media (min-width: 1025px) {
  .modules-sidebar { width: 192px; }
}

.module-nav-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  background: transparent;
  border: none;
  border-left: 3px solid transparent;
  cursor: pointer;
  text-align: left;
  width: 100%;
  flex: 0 0 auto;
  transition: all 0.22s ease;
  font-family: inherit;
}

.module-nav-btn.is-active {
  background: rgba(255, 138, 31, 0.08);
  border-left-color: var(--orange-primary);
}

.module-nav-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: rgba(100, 116, 139, 0.07);
  transition: all 0.22s ease;
}

.module-nav-btn.is-active .module-nav-icon {
  background: var(--light-tag-bg);
}

.module-nav-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--light-text-sub);
  line-height: 1.3;
  transition: all 0.22s ease;
}

.module-nav-btn.is-active .module-nav-label {
  font-weight: 700;
  color: var(--light-text-bright);
}

.module-nav-chevron {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--light-text-dim);
  opacity: 0;
  transition: opacity 0.22s ease, color 0.22s ease;
}

.module-nav-btn.is-active .module-nav-chevron {
  opacity: 1;
  color: var(--orange-primary);
}

.module-nav-icon svg {
  color: var(--light-text-dim);
}

.module-nav-btn.is-active .module-nav-icon svg {
  color: var(--orange-primary);
}

.modules-content {
  flex: 1;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  position: relative;
  overflow: hidden;
}

.modules-content-glow-1,
.modules-content-glow-2 {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.modules-content-glow-1 {
  top: -30px;
  right: -30px;
  width: 140px;
  height: 140px;
  background: rgba(255, 138, 31, 0.04);
}

.modules-content-glow-2 {
  bottom: -20px;
  left: -20px;
  width: 100px;
  height: 100px;
  background: rgba(77, 124, 254, 0.04);
}

.module-detail-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--light-tag-bg);
  border: 1.5px solid rgba(255, 138, 31, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--orange-primary);
  flex-shrink: 0;
}

.module-detail-icon svg {
  width: 24px;
  height: 24px;
  display: block;
  color: var(--orange-primary);
}

.module-badge-icon {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: rgba(255, 138, 31, 0.12);
  border: 1px solid rgba(255, 138, 31, 0.22);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.module-badge-icon svg {
  width: 14px;
  height: 14px;
  display: block;
  color: var(--orange-primary);
}

.module-detail h4 {
  font-size: 22px;
  font-weight: 800;
  color: var(--light-text-bright);
  margin-bottom: 12px;
  line-height: 1.3;
}

.module-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.module-badge {
  font-size: 14px;
  font-weight: 700;
  border-radius: 9999px;
  padding: 4px 14px;
}

.module-badge--orange {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--light-tag-text);
  background: var(--light-tag-bg);
  border: 1px solid rgba(255, 138, 31, 0.2);
}

.module-badge--orange .module-badge-label {
  color: var(--light-tag-text);
  font-weight: 700;
}

.module-badge--blue {
  color: var(--light-badge-text);
  background: var(--light-badge-bg);
  border: 1px solid var(--light-badge-border);
}

.module-detail-text {
  font-size: 17px;
  color: var(--light-text-sub);
  line-height: 1.85;
  margin-bottom: 20px;
}

.module-detail-summary {
  padding: 16px 20px;
  background: rgba(77, 124, 254, 0.04);
  border: 1px solid rgba(77, 124, 254, 0.12);
  border-radius: 12px;
}

.module-detail-summary p {
  font-size: 15px;
  color: var(--light-text-dim);
  line-height: 1.7;
  margin: 0;
}

/* 移动端模块手风琴 */
.modules-accordion {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

@media (min-width: 768px) {
  .modules-accordion { display: none; }
}

.module-acc-item {
  background: var(--light-feature-card);
  border: 1px solid var(--light-feature-border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.module-acc-item.is-open {
  border: 1.5px solid rgba(255, 138, 31, 0.4);
}

.module-acc-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}

.module-acc-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: rgba(100, 116, 139, 0.07);
}

.module-acc-item.is-open .module-acc-icon {
  background: var(--light-tag-bg);
}

.module-acc-icon svg {
  color: var(--light-text-dim);
}

.module-acc-item.is-open .module-acc-icon svg {
  color: var(--orange-primary);
}

.module-acc-title {
  flex: 1;
  font-size: 15px;
  font-weight: 500;
  color: var(--light-text-sub);
  text-align: left;
}

.module-acc-item.is-open .module-acc-title {
  font-weight: 700;
  color: var(--light-text-bright);
}

.module-acc-body {
  display: none;
  padding: 0 16px 16px 60px;
}

.module-acc-item.is-open .module-acc-body {
  display: block;
}

.module-acc-body p {
  font-size: 13px;
  color: var(--light-text-sub);
  line-height: 1.75;
  margin: 0;
}

.module-acc-chevron {
  flex-shrink: 0;
  transition: transform 0.2s ease;
  color: var(--light-text-dim);
}

.module-acc-item.is-open .module-acc-chevron {
  transform: rotate(180deg);
  color: var(--orange-primary);
}

/* ===== 换电柜 ===== */
.cabinet-features {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .cabinet-features { gap: 14px; margin-bottom: 56px; }
}

@media (min-width: 1025px) {
  .cabinet-features { gap: 20px; margin-bottom: 80px; }
}

.cabinet-feat-card {
  flex: 0 0 calc(50% - 6px);
  background: var(--light-feature-card);
  border: 1px solid var(--light-feature-border);
  border-radius: 14px;
  padding: 16px 16px 20px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

@media (min-width: 768px) {
  .cabinet-feat-card {
    flex: 0 0 calc(32.333% - 10px);
    border-radius: 18px;
    padding: 18px 18px 22px;
  }
}

.cabinet-feat-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 40px rgba(255, 138, 31, 0.15);
}

.cabinet-feat-top-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
}

.cabinet-feat-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 10px;
}

.cabinet-feat-icon {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 1025px) {
  .cabinet-feat-icon { width: 44px; height: 44px; }
}

.cabinet-feat-value {
  font-size: 12px;
  font-weight: 900;
  border-radius: 9999px;
  padding: 2px 8px;
}

.cabinet-feat-card h4 {
  font-size: 15px;
  font-weight: 800;
  color: var(--light-text-bright);
  margin-bottom: 6px;
}

.cabinet-feat-card p {
  font-size: 12px;
  color: var(--light-text-sub);
  line-height: 1.75;
}

@media (min-width: 1025px) {
  .cabinet-feat-card h4 { font-size: 18px; }
  .cabinet-feat-card p { font-size: 15px; }
  .cabinet-feat-value { font-size: 15px; padding: 3px 12px; }
}

.cabinet-compare-title {
  text-align: center;
  margin-bottom: 24px;
}

.cabinet-compare-title h3 {
  font-size: 20px;
  font-weight: 900;
  color: var(--light-text-bright);
  margin-bottom: 12px;
}

@media (min-width: 1025px) {
  .cabinet-compare-title { margin-bottom: 40px; }
  .cabinet-compare-title h3 { font-size: 28px; }
}

.pain-tabs-desktop {
  display: none;
  gap: 8px;
  margin-bottom: 32px;
  justify-content: center;
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .pain-tabs-desktop { display: flex; }
}

.pain-tabs-mobile {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  .pain-tabs-mobile { display: none; }
}

.pain-tab-row {
  display: flex;
  gap: 6px;
}

.pain-tab-btn {
  flex: 1;
  padding: 10px 8px;
  border-radius: 12px;
  border: 1px solid var(--light-feature-border);
  background: transparent;
  color: var(--light-text-sub);
  font-size: 13px;
  font-weight: 700;
  transition: all 0.3s ease;
  white-space: nowrap;
  text-align: center;
  cursor: pointer;
  font-family: inherit;
}

.pain-tab-btn.is-active,
.pain-tabs-desktop .pain-tab-btn.is-active {
  border: 1.5px solid var(--orange-primary);
  background: var(--light-tag-bg);
  color: var(--orange-primary);
}

.pain-tabs-desktop .pain-tab-btn {
  padding: 10px 24px;
  border-radius: 9999px;
  font-size: 14px;
}

.pain-compare {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
}

@media (min-width: 768px) {
  .pain-compare {
    flex-direction: row;
    gap: 24px;
    align-items: center;
  }
}

.pain-panel {
  flex: 1;
  border-radius: 20px;
  padding: 20px 18px;
  position: relative;
  overflow: hidden;
}

.pain-panel--problem {
  background: rgba(228, 87, 87, 0.05);
  border: 1px solid rgba(228, 87, 87, 0.2);
}

.pain-panel--solution {
  background: rgba(255, 138, 31, 0.05);
  border: 1px solid rgba(255, 138, 31, 0.25);
}

.pain-panel-top-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
}

.pain-panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.pain-panel-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pain-panel-label {
  font-size: 12px;
  font-weight: 600;
}

.pain-panel-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--light-text-bright);
}

.pain-panel-text {
  font-size: 13px;
  color: var(--light-text-sub);
  line-height: 1.8;
  margin: 0;
  border-left: 2px solid;
  padding-left: 16px;
}

.pain-panel--problem .pain-panel-text { border-color: rgba(228, 87, 87, 0.3); }
.pain-panel--solution .pain-panel-text { border-color: rgba(255, 138, 31, 0.3); margin-bottom: 16px; }

.pain-solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pain-solution-tags span {
  font-size: 12px;
  color: var(--orange-primary);
  background: var(--light-tag-bg);
  border: 1px solid rgba(255, 138, 31, 0.25);
  border-radius: 9999px;
  padding: 3px 12px;
  font-weight: 600;
}

.pain-arrow {
  display: none;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 48px;
}

@media (min-width: 768px) {
  .pain-arrow { display: flex; width: 60px; }
}

.pain-arrow-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--light-tag-bg);
  border: 1.5px solid rgba(255, 138, 31, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== 换电柜区块装饰 / 与核心优势衔接 ===== */
#cabinet.bb-section--light {
  padding-bottom: 40px;
}

@media (min-width: 768px) {
  #cabinet.bb-section--light {
    padding-bottom: 48px;
  }
}

@media (min-width: 1025px) {
  #cabinet.bb-section--light {
    padding-bottom: 56px;
  }
}

.cabinet-bg-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 50% 50% at 0% 70%, rgba(255, 138, 31, 0.06) 0%, transparent 60%);
}

/* ===== 核心优势 ===== */
#advantages {
  background: var(--section-bg);
  padding: 40px 0 100px;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  #advantages {
    padding-top: 48px;
  }
}

@media (min-width: 1025px) {
  #advantages {
    padding-top: 56px;
  }
}

.advantages-bg-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(ellipse 60% 40% at 50% 0%, var(--light-badge-bg) 0%, transparent 70%);
}

#advantages .bb-container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}

.advantages-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--light-badge-bg);
  border: 1px solid var(--light-badge-border);
  border-radius: 9999px;
  padding: 4px 16px;
  margin-bottom: 16px;
  font-size: 12px;
  font-weight: 700;
  color: var(--blue-vivid);
}

.advantages-mobile-tabs {
  display: block;
}

.advantages-desktop {
  display: none;
  gap: 0;
  align-items: stretch;
  position: relative;
}

@media (min-width: 768px) {
  .advantages-mobile-tabs { display: none; }
  .advantages-desktop { display: flex; }
}

.advantages-tab-bar {
  display: flex;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 20px;
  background: var(--section-alt);
  border: 1px solid var(--light-feature-border);
  padding: 4px;
  gap: 4px;
}

.advantages-tab-bar button {
  flex: 1;
  padding: 10px 0;
  border-radius: 12px;
  font-weight: 700;
  font-size: 14px;
  transition: all 0.25s ease;
  color: var(--light-text-dim);
}

.advantages-tab-bar button.is-active-have {
  background: var(--light-feature-card);
  color: var(--light-text-bright);
  box-shadow: 0 2px 12px var(--light-feature-border);
}

.advantages-tab-bar button.is-active-unique {
  background: var(--blue-vivid);
  color: var(--text-bright);
  box-shadow: 0 2px 16px var(--light-badge-border);
}

.advantage-panel {
  border-radius: 20px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
}

.advantage-panel--have {
  background: var(--light-feature-card);
  border: 1.5px solid var(--light-feature-border);
}

.advantage-panel--unique {
  background: linear-gradient(160deg, var(--light-badge-bg) 0%, var(--section-alt) 100%);
  border: 1.5px solid var(--blue-vivid);
}

.advantage-col {
  flex: 1;
  min-width: 0;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}

.advantage-col--have {
  background: var(--light-feature-card);
  border: 1.5px solid var(--light-feature-border);
  border-radius: 20px 0 0 20px;
}

.advantage-col--unique {
  background: linear-gradient(160deg, var(--light-badge-bg) 0%, var(--section-alt) 100%);
  border: 1.5px solid var(--blue-vivid);
  border-radius: 0 20px 20px 0;
}

.advantage-vs {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 64px;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.advantage-vs-line {
  flex: 1;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--light-badge-border));
}

.advantage-vs-line--bottom {
  background: linear-gradient(to bottom, var(--light-badge-border), transparent);
}

.advantage-vs-badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--orange-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 900;
  color: var(--text-bright);
  letter-spacing: 0.02em;
}

.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--light-section-line);
}

.advantage-item:last-child {
  border-bottom: none;
}

.advantage-item-title {
  font-size: clamp(13px, 1.4vw, 15px);
  font-weight: 800;
  margin-bottom: 3px;
}

.advantage-item-desc {
  font-size: clamp(11.5px, 1.1vw, 13px);
  color: var(--light-text-dim);
  margin: 0;
  line-height: 1.65;
}

.advantage-col--unique .advantage-item {
  border-color: var(--light-badge-border);
}

.advantage-col--unique .advantage-item-title {
  color: var(--blue-deep);
}

/* ===== CTA ===== */
#cta {
  position: relative;
  padding: 80px 0 60px;
  overflow: hidden;
  background: linear-gradient(180deg, #0e1120 0%, var(--hero-bg) 100%);
}

@media (min-width: 768px) {
  #cta { padding: 100px 0; }
}

@media (min-width: 1025px) {
  #cta { padding: 120px 0; }
}

.cta-glow {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(255, 138, 31, 0.12) 0%, transparent 65%);
  pointer-events: none;
}

@media (min-width: 768px) {
  .cta-glow { width: 600px; height: 340px; }
}

@media (min-width: 1025px) {
  .cta-glow { width: 800px; height: 400px; }
}

.cta-grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.04;
  background-image:
    linear-gradient(var(--divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--divider) 1px, transparent 1px);
  background-size: 80px 80px;
}

.cta-particle {
  position: absolute;
  border-radius: 50%;
  background: var(--orange-primary);
  animation: particle-float 3.5s ease-in-out infinite;
}

.cta-inner {
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: 24px;
  font-weight: 900;
  line-height: 1.45;
  letter-spacing: -0.01em;
  max-width: 760px;
  margin: 0 auto 16px;
  color: var(--text-bright);
}

@media (min-width: 768px) {
  .cta-title { font-size: 32px; }
}

@media (min-width: 1025px) {
  .cta-title { font-size: 40px; }
}

.cta-title-gradient {
  background: linear-gradient(90deg, var(--orange-primary), var(--orange-light), var(--orange-primary));
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: scan-line 3s linear infinite;
}

.cta-desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto 12px;
}

@media (min-width: 1025px) {
  .cta-desc { font-size: 18px; }
}

.cta-sub {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

@media (min-width: 1025px) {
  .cta-sub { margin-bottom: 48px; }
  .cta-actions { margin-bottom: 48px; gap: 20px; }
}

.cta-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

@media (min-width: 1025px) {
  .cta-stats { gap: 48px; }
}

.cta-stat-num {
  font-size: 22px;
  font-weight: 900;
  color: var(--orange-primary);
  line-height: 1;
}

@media (min-width: 1025px) {
  .cta-stat-num { font-size: 28px; }
}

.cta-stat-label {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

.bb-footer {
  border-top: 1px solid var(--divider);
  margin-top: 48px;
  padding-top: 28px;
  text-align: center;
}

@media (min-width: 1025px) {
  .bb-footer { margin-top: 80px; }
}

.bb-footer-inner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .bb-footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.bb-footer-links {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.bb-footer-links button {
  font-size: 13px;
  color: var(--text-dim);
  transition: color 0.2s;
}

.bb-footer-links button:hover {
  color: var(--orange-primary);
}

.bb-footer-copy {
  font-size: 13px;
  color: var(--text-dim);
}

/* 工具 */
.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;
}

.hidden { display: none !important; }