/* ═══════════════════════════════════════════════
   Sellevio — 全局样式
═══════════════════════════════════════════════ */

:root {
  /* ── 方案C：深紫黑 × 亮橙红 ── */
  --brand:       #5B21B6;
  --brand-mid:   #7C3AED;
  --brand-dark:  #4C1D95;
  --brand-light: #EDE9FF;
  --brand-glow:  rgba(124,58,237,.35);

  --accent:      #FF4D00;
  --accent-dark: #E03E00;
  --accent-light:#FFF0EB;
  --accent-glow: rgba(255,77,0,.4);

  --purple-soft: #A78BFA;
  --gold:        #F59E0B;

  --left-bg:     #0C0A1A;
  --left-text:   #ffffff;
  --right-bg:    #FAFAFA;
  --right-text:  #0C0A1A;

  --gray-50:     #F9FAFB;
  --gray-100:    #F3F4F6;
  --gray-200:    #E5E7EB;
  --gray-400:    #9CA3AF;
  --gray-600:    #4B5563;
  --gray-700:    #374151;
  --gray-800:    #1F2937;
  --gray-900:    #111827;

  --radius-sm:   8px;
  --radius:      14px;
  --radius-lg:   22px;
  --shadow-sm:   0 1px 4px rgba(0,0,0,.06);
  --shadow:      0 4px 20px rgba(0,0,0,.10);
  --shadow-lg:   0 12px 48px rgba(0,0,0,.18);
  --transition:  0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: #fff;
  color: var(--gray-900);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }
input, select { font-family: inherit; outline: none; border: none; background: none; width: 100%; }
input[type="checkbox"], input[type="radio"] { width: auto !important; flex-shrink: 0; }
.hidden { display: none !important; }

/* ═══════════════════════════════════════════════
   顶部导航栏
═══════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(12, 10, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(12, 10, 26, 0.98);
  box-shadow: 0 2px 32px rgba(0,0,0,.4);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 40px;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent), var(--brand-mid));
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 15px;
  box-shadow: 0 0 16px rgba(255,77,0,.45);
}
.logo-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  margin: 0 auto;
}
.nav-links a {
  color: rgba(255,255,255,.7);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 8px;
  transition: var(--transition);
}
.nav-links a:hover {
  color: #fff;
  background: rgba(255,255,255,.08);
}

/* Nav actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.btn-login {
  color: rgba(255,255,255,.85);
  font-size: 14px;
  font-weight: 500;
  padding: 7px 16px;
  border-radius: 8px;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,.15);
}
.btn-login:hover {
  background: rgba(255,255,255,.08);
  color: #fff;
  border-color: rgba(255,255,255,.3);
}
.btn-register {
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 9px;
  transition: var(--transition);
  box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-register:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

/* 用户头像 */
.user-avatar-wrap { position: relative; }
.user-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--brand-mid));
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 0 0 2px rgba(255,77,0,.3);
}
.user-avatar:hover {
  box-shadow: 0 0 0 3px rgba(255,77,0,.55);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 220px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 12px 0;
  border: 1px solid var(--gray-200);
  z-index: 2000;
}
.user-dropdown hr { border: none; border-top: 1px solid var(--gray-200); margin: 6px 0; }
.user-dropdown a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  font-size: 14px;
  color: var(--gray-800);
  transition: var(--transition);
}
.user-dropdown a:hover { background: var(--gray-50); color: var(--brand-mid); }
.user-info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px 4px;
}
.user-name-d { font-weight: 600; font-size: 14px; }
.user-plan-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 20px;
}
.user-credits-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 16px 10px;
  font-size: 13px;
  color: var(--gray-600);
}
.user-credits-row i { color: var(--gold); }
.logout-link { color: #EF4444 !important; }
.logout-link:hover { background: #FEF2F2 !important; color: #EF4444 !important; }

/* 汉堡菜单 */
.hamburger {
  display: none;
  color: #fff;
  font-size: 20px;
  padding: 6px;
}

/* ── 语言切换按钮 ── */
.lang-wrap {
  position: relative;
  flex-shrink: 0;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,.75);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.12);
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
}
.lang-btn:hover {
  color: #fff;
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.25);
}
.lang-btn .fa-chevron-down {
  font-size: 10px;
  opacity: .7;
  transition: transform .3s;
}
.lang-wrap:not(.hidden) .lang-btn.open .fa-chevron-down {
  transform: rotate(180deg);
}
.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #1a1830;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  padding: 6px;
  min-width: 140px;
  box-shadow: 0 8px 32px rgba(0,0,0,.4);
  z-index: 3000;
}
.lang-option {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 9px 12px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,.75);
  transition: var(--transition);
  cursor: pointer;
  text-align: left;
}
.lang-option:hover {
  background: rgba(255,255,255,.08);
  color: #fff;
}
.lang-option.active {
  color: var(--accent);
  background: rgba(255,77,0,.08);
}
.lang-flag { font-size: 16px; }

/* ═══════════════════════════════════════════════
   Hero 首屏 — 斜切分屏
═══════════════════════════════════════════════ */
.hero {
  padding-top: 64px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  background: var(--left-bg);
}

.split-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  position: relative;
  transition: grid-template-columns 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  /* 确保整个分屏区域撑满，避免底部空白导致 mouseleave 提前触发 */
  align-items: stretch;
}

/* ─── 面板基础 ─── */
.split-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px 52px;
  overflow: hidden;
  cursor: default;
  min-height: 520px;  /* 防止内容不足时容器过矮，hover 时鼠标稍往下就触发 mouseleave */
}

.split-left {
  background: var(--left-bg);
  z-index: 1;
  padding-right: 88px; /* 为斜切三角留空间 */
}

.split-right {
  background: var(--right-bg);
  z-index: 1;
  padding-left: 52px;
  padding-right: 52px;
  transition: padding 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── 斜切：用 split-left 的 ::before 伪元素画一个右侧三角
       三角颜色 = 右侧面板背景色，视觉上"切掉"左侧面板右下角 ─── */
.split-left::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0 2000px 88px;
  border-color: transparent transparent var(--right-bg) transparent;
  pointer-events: none;
  z-index: 10;
  transition: border-left-width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── 刀光线已移除（遮挡五视图，视觉冗余）─── */
.split-left::after { content: none; }

/* ─── 悬浮展开 ─── */
.split-container.expand-left {
  grid-template-columns: 1.55fr 0.45fr;
}
.split-container.expand-left .split-left::before { border-left-width: 66px; }
/* .split-left::after 已移除 */
.split-container.expand-left .split-right        { padding-left: 36px; }

.split-container.expand-right {
  grid-template-columns: 0.45fr 1.55fr;
}
.split-container.expand-right .split-left::before { border-left-width: 110px; }
/* .split-left::after 已移除 */
.split-container.expand-right .split-right        { padding-left: 72px; }

/* ─── 背景光效 ─── */
.panel-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.panel-bg-left {
  background:
    radial-gradient(ellipse 55% 60% at 75% 40%, rgba(124,58,237,.22) 0%, transparent 65%),
    radial-gradient(ellipse 35% 35% at 15% 85%, rgba(255,77,0,.08) 0%, transparent 60%);
}
.panel-bg-right {
  background:
    radial-gradient(ellipse 50% 55% at 25% 50%, rgba(124,58,237,.06) 0%, transparent 65%),
    radial-gradient(ellipse 40% 40% at 85% 15%, rgba(255,77,0,.05) 0%, transparent 60%);
}

/* ─── 内容层 ─── */
.panel-content {
  position: relative;
  z-index: 2;
  max-width: 440px;
}
.split-right .panel-content {
  max-width: 100%;
}

/* Badge */
.panel-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.split-left  .panel-badge { background: rgba(167,139,250,.15); color: var(--purple-soft); border: 1px solid rgba(167,139,250,.25); }
.split-right .panel-badge { background: rgba(255,77,0,.08);    color: var(--accent);      border: 1px solid rgba(255,77,0,.2); }

/* 标题 */
.panel-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.7rem, 2.5vw, 2.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 10px;
}
.split-left  .panel-title { color: #fff; }
.split-right .panel-title { color: var(--gray-900); }

/* 描述 */
.panel-desc {
  font-size: 13.5px;
  line-height: 1.65;
  margin-bottom: 14px;
  max-width: 360px;
}
.split-left  .panel-desc { color: rgba(255,255,255,.6); }
.split-right .panel-desc { color: var(--gray-600); }

/* 特性列表 */
.panel-features {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 14px;
}
.panel-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
}
.split-left  .panel-features li { color: rgba(255,255,255,.82); }
.split-right .panel-features li { color: var(--gray-700); }
.split-left  .panel-features .fa-check-circle { color: var(--accent); font-size: 14px; }
.split-right .panel-features .fa-check-circle { color: var(--brand-mid); font-size: 14px; }

/* 平台徽标 */
.platform-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.ppill {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  background: #fff;
  transition: var(--transition);
}
.ppill.amazon  { color: #FF9900; border-color: rgba(255,153,0,.3); background: #FFF8EE; }
.ppill.tiktok  { color: #010101; border-color: rgba(0,0,0,.15);    background: #F5F5F5; }
.ppill.ebay    { color: #E53238; border-color: rgba(229,50,56,.3);  background: #FFF0F0; }
.ppill.etsy    { color: #F56400; border-color: rgba(245,100,0,.3);  background: #FFF4EE; }
.ppill.shopify { color: #008060; border-color: rgba(0,128,96,.3);   background: #EFF8F5; }
.ppill.more    { color: var(--accent); border-color: rgba(255,77,0,.3); background: var(--accent-light); }

/* CTA 按钮 */
.panel-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  transition: var(--transition);
}
.split-left .panel-cta {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.split-left .panel-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}
.panel-cta-right {
  background: var(--brand-mid) !important;
  color: #fff !important;
  box-shadow: 0 4px 20px var(--brand-glow) !important;
}
.panel-cta-right:hover {
  background: var(--brand-dark) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 32px var(--brand-glow) !important;
}

/* ─── 装饰元素 ─── */
.panel-deco {
  position: absolute;
  right: 36px;
  bottom: 36px;
  z-index: 1;
  opacity: 0.5;
  transition: opacity 0.4s;
  pointer-events: none;
}
.split-container.expand-left  .deco-left  { opacity: 1; }
.split-container.expand-right .deco-right { opacity: 1; }
.split-container.expand-right .deco-left  { opacity: 0.15; }
.split-container.expand-left  .deco-right { opacity: 0.15; }

.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 64px);
  grid-template-rows: repeat(2, 64px);
  gap: 7px;
  position: relative;   /* 让 ai-scan-line absolute 以此为基准 */
  overflow: hidden;     /* 扫描线不超出网格边界 */
  /* 兜底：确保子元素 absolute 不溢出 */
  isolation: isolate;
}
.photo-item {
  border-radius: 10px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.10);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 16px;
  color: rgba(255,255,255,.45);
}
.photo-item span { font-size: 9px; font-weight: 600; color: rgba(255,255,255,.3); }
.photo-item.p1 { grid-column:1; grid-row:1; }
.photo-item.p2 { grid-column:2; grid-row:1; }
.photo-item.p3 { grid-column:1; grid-row:2; }
.photo-item.p4 { grid-column:2; grid-row:2; }
.photo-item.p5 { grid-column:3; grid-row:1/span 2; font-size:22px; }

.ai-scan-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;          /* 显式宽度，兼容 grid 子元素 */
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  animation: scanLine 2.8s ease-in-out infinite;
  box-shadow: 0 0 10px var(--accent-glow);
  grid-column: 1 / -1;  /* grid 布局中跨全列 */
  pointer-events: none;
  z-index: 5;
}
@keyframes scanLine {
  0%   { top: 0;   opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { top: calc(64px * 2 + 7px); opacity: 0; }
}

.deco-right { right: auto; left: 36px; bottom: 36px; }
.output-stack { display: flex; flex-direction: column; gap: 7px; }

/* 内联版：横向排列，嵌入正常文档流 */
.output-stack.output-inline {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.output-card {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border-radius: 9px;
  background: rgba(91,33,182,.06);
  border: 1px solid rgba(91,33,182,.14);
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-mid);
  white-space: nowrap;
  animation: slideInCard 0.5s ease both;
}
.output-card i { color: var(--accent); }
.output-card.oc1 { animation-delay: 0s; }
.output-card.oc2 { animation-delay: 0.1s; }
.output-card.oc3 { animation-delay: 0.2s; }
.output-card.oc4 { animation-delay: 0.3s; }
@keyframes slideInCard {
  from { opacity: 0; transform: translateX(-14px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ─── 中央图标 ─── */
.split-divider {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 20;
  pointer-events: none;
}
.divider-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--brand-mid));
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 0 0 5px rgba(255,77,0,.15), 0 8px 28px rgba(255,77,0,.4);
  animation: dividerPulse 2.5s ease-in-out infinite;
}
@keyframes dividerPulse {
  0%,100% { box-shadow: 0 0 0 5px rgba(255,77,0,.15), 0 8px 28px rgba(255,77,0,.4); }
  50%     { box-shadow: 0 0 0 10px rgba(255,77,0,.08), 0 12px 40px rgba(255,77,0,.5); }
}

/* ─── Hero 底部状态栏 ─── */
.hero-sub {
  background: rgba(12,10,26,.95);
  border-top: 1px solid rgba(255,255,255,.05);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  padding: 14px 24px;
  flex-wrap: wrap;
}
.hero-sub span {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 500;
  color: rgba(255,255,255,.5);
}
.hero-sub span i { color: var(--accent); }
  max-width: 380px;
}
.split-left  .panel-desc { color: rgba(255,255,255,.6); }
.split-right .panel-desc { color: var(--gray-600); }

/* 特性列表 */
.panel-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.panel-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
}
.split-left  .panel-features li { color: rgba(255,255,255,.82); }
.split-right .panel-features li { color: var(--gray-700); }
.split-left  .panel-features .fa-check-circle { color: var(--accent); font-size: 15px; }
.split-right .panel-features .fa-check-circle { color: var(--brand-mid); font-size: 15px; }

/* 平台徽标 */
.platform-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.ppill {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  background: #fff;
  transition: var(--transition);
}
.ppill.amazon  { color: #FF9900; border-color: rgba(255,153,0,.3); background: #FFF8EE; }
.ppill.tiktok  { color: #010101; border-color: rgba(0,0,0,.15);    background: #F5F5F5; }
.ppill.ebay    { color: #E53238; border-color: rgba(229,50,56,.3);  background: #FFF0F0; }
.ppill.etsy    { color: #F56400; border-color: rgba(245,100,0,.3);  background: #FFF4EE; }
.ppill.shopify { color: #008060; border-color: rgba(0,128,96,.3);   background: #EFF8F5; }
.ppill.more    { color: var(--accent); border-color: rgba(255,77,0,.3); background: var(--accent-light); }

/* CTA 按钮 */
.panel-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  transition: var(--transition);
  letter-spacing: -0.2px;
}
.split-left .panel-cta {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.split-left .panel-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}
.panel-cta-right {
  background: var(--brand-mid) !important;
  color: #fff !important;
  box-shadow: 0 4px 20px var(--brand-glow) !important;
}
.panel-cta-right:hover {
  background: var(--brand-dark) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 32px var(--brand-glow) !important;
}

/* ─── 中央分割图标 ─── */
.split-divider {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 20;
  pointer-events: none;
}
.divider-icon {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--brand-mid));
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 20px;
  box-shadow:
    0 0 0 5px rgba(255,77,0,.15),
    0 0 0 10px rgba(255,77,0,.06),
    0 8px 28px rgba(255,77,0,.4);
  animation: dividerPulse 2.5s ease-in-out infinite;
}
@keyframes dividerPulse {
  0%, 100% {
    box-shadow: 0 0 0 5px rgba(255,77,0,.15), 0 0 0 10px rgba(255,77,0,.06), 0 8px 28px rgba(255,77,0,.4);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(255,77,0,.12), 0 0 0 16px rgba(255,77,0,.04), 0 12px 40px rgba(255,77,0,.5);
  }
}

/* ─── Hero 底部状态栏 ─── */
.hero-sub {
  background: rgba(12,10,26,.95);
  border-top: 1px solid rgba(255,255,255,.05);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 15px 24px;
  flex-wrap: wrap;
}
.hero-sub span {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,.5);
}
.hero-sub span i { color: var(--accent); font-size: 14px; }
}
.ppill {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  background: #fff;
  transition: var(--transition);
}
.ppill.amazon  { color: #FF9900; border-color: #FF9900; background: #FFF8EE; }
.ppill.tiktok  { color: #010101; border-color: #010101; background: #F5F5F5; }
.ppill.ebay    { color: #E53238; border-color: #E53238; background: #FFF0F0; }
.ppill.etsy    { color: #F56400; border-color: #F56400; background: #FFF4EE; }
.ppill.shopify { color: #008060; border-color: #008060; background: #EFF8F5; }
.ppill.more    { color: var(--brand); border-color: var(--brand); background: var(--brand-light); }

/* CTA 按钮 */
.panel-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}
.split-left .panel-cta {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 4px 20px rgba(108,71,255,.5);
}
.split-left .panel-cta:hover {
  background: var(--brand-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(108,71,255,.6);
}
.panel-cta-right {
  background: var(--brand) !important;
  color: #fff !important;
  box-shadow: 0 4px 20px rgba(108,71,255,.35) !important;
}
.panel-cta-right:hover {
  background: var(--brand-dark) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 28px rgba(108,71,255,.5) !important;
}

/* ═══════════════════════════════════════════════
   Section 公共样式
═══════════════════════════════════════════════ */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header-flex {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  text-align: left;
  flex-wrap: wrap;
  gap: 16px;
}
.section-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: 12px;
}
.section-sub {
  font-size: 15px;
  color: var(--gray-600);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════
   快捷功能区 / 核心能力
═══════════════════════════════════════════════ */
.quick-actions {
  padding: 100px 0;
  background: var(--gray-50);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  position: relative;
}
.feature-card:hover {
  border-color: rgba(124,58,237,.3);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(124,58,237,.1);
}
.fc-highlight {
  background: var(--left-bg);
  border: 1px solid rgba(255,77,0,.25);
  color: #fff;
  box-shadow: 0 8px 40px rgba(0,0,0,.25), inset 0 0 60px rgba(124,58,237,.08);
  position: relative;
  overflow: hidden;
}
/* 橙红光晕装饰 */
.fc-highlight::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,77,0,.25) 0%, transparent 70%);
  pointer-events: none;
}
.fc-highlight:hover {
  border-color: rgba(255,77,0,.5);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,.3), 0 0 40px rgba(255,77,0,.15);
}

.fc-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  margin-bottom: 14px;
  background: var(--accent-light);
  color: var(--accent);
  transition: var(--transition);
}
.fc-highlight .fc-icon {
  background: rgba(255,77,0,.18);
  color: var(--accent);
  border: 1px solid rgba(255,77,0,.25);
  box-shadow: 0 0 16px rgba(255,77,0,.2);
}

/* 普通卡片文字 */
.feature-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--gray-900);
}
.feature-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.65;
}

/* fc-highlight 深色背景卡片：强制白色文字，选择器权重高于通用规则 */
.feature-card.fc-highlight h3 {
  color: #ffffff;
  font-size: 17px;
}
.feature-card.fc-highlight p {
  color: rgba(255,255,255,.82);
  line-height: 1.7;
}

.fc-tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .6px;
  color: var(--accent);
  background: rgba(255,77,0,.15);
  border: 1px solid rgba(255,77,0,.25);
  padding: 3px 12px;
  border-radius: 20px;
}

/* ═══════════════════════════════════════════════
   平台支持区
═══════════════════════════════════════════════ */
.platforms-section {
  padding: 100px 0;
  background: #fff;
}
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}
.platform-card {
  border-radius: var(--radius);
  padding: 24px 20px;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  background: #fff;
}
.platform-card:hover {
  border-color: rgba(124,58,237,.25);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.pc-live { border-color: rgba(255,77,0,.2); background: var(--accent-light); }
.pc-soon { border-color: var(--gray-200); background: var(--gray-50); }
.pc-plan { border-color: var(--gray-200); background: var(--gray-50); opacity: 0.8; }

.pc-logo {
  font-size: 28px;
  margin-bottom: 10px;
  color: var(--gray-400);
}
.amazon-logo { color: #FF9900; }
.tiktok-logo { color: #010101; }
.etsy-logo   { color: #F56400; }
.shopify-logo{ color: #008060; }

.pc-name {
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 6px;
  color: var(--gray-900);
}
.pc-status {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 14px;
}
.pc-status.live { background: #D1FAE5; color: #065F46; }
.pc-status.soon { background: #FEF3C7; color: #92400E; }
.pc-status.plan { background: var(--gray-200); color: var(--gray-600); }

.pc-rules {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.pc-rules li {
  font-size: 12px;
  color: var(--gray-600);
  padding-left: 12px;
  position: relative;
}
.pc-rules li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--brand);
}

/* ═══════════════════════════════════════════════
   权益 & 积分区
═══════════════════════════════════════════════ */
.pricing-section {
  padding: 100px 0;
  background: var(--gray-900);
}
.pricing-section .section-tag {
  background: rgba(255,77,0,.15);
  color: #FB923C;
}
.pricing-section .section-title { color: #fff; }
.pricing-section .section-sub   { color: rgba(255,255,255,.55); }

/* 积分说明 */
.credits-explain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 48px;
}
.ce-item {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 160px;
}
.ce-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: rgba(108,71,255,.2);
  color: #a78bfa;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.ce-icon.green  { background: rgba(0,210,168,.15); color: var(--accent); }
.ce-icon.blue   { background: rgba(59,130,246,.15); color: #60A5FA; }
.ce-icon.purple { background: rgba(168,85,247,.15); color: #C084FC; }
.ce-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.ce-text strong { color: #fff; font-size: 13px; }
.ce-text span   { color: rgba(255,255,255,.5); font-size: 12px; }
.credit-val     { font-style: normal; color: var(--gold); font-weight: 700; }
.ce-arrow       { color: rgba(255,255,255,.2); font-size: 18px; }
.ce-note {
  flex-basis: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(255,255,255,.4);
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 14px;
  margin-top: 4px;
}
.ce-note i { color: rgba(255,255,255,.3); }

/* 套餐卡片 */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.plan-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
}
.plan-card:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(108,71,255,.3);
  transform: translateY(-4px);
}
.plan-popular {
  background: rgba(255,77,0,.08);
  border-color: rgba(255,77,0,.35);
  box-shadow: 0 0 40px rgba(255,77,0,.12);
}
.plan-badge-top {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--accent), var(--brand-mid));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  white-space: nowrap;
}
.plan-header { margin-bottom: 24px; }
.plan-name {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,.55);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 10px;
}
.price-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 36px;
  font-weight: 800;
  color: #fff;
}
.price-period { color: rgba(255,255,255,.4); font-size: 14px; }
.price-tbd { font-size: 22px; color: rgba(255,255,255,.5); }
.plan-credits {
  font-size: 13px;
  color: rgba(255,255,255,.5);
}
.plan-credits i { color: var(--gold); }
.plan-credits strong { color: var(--gold); }

.plan-features-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}
.plan-features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,.8);
}
.plan-features-list li .fa-check { color: var(--accent); }
.plan-features-list li.disabled { color: rgba(255,255,255,.3); }
.plan-features-list li.disabled .fa-xmark { color: rgba(255,255,255,.2); }

.plan-btn {
  width: 100%;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.8);
  border: 1px solid rgba(255,255,255,.12);
}
.plan-btn:hover {
  background: rgba(255,255,255,.14);
  color: #fff;
}
.plan-btn-pro {
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  color: #fff;
  border: none;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.plan-btn-pro:hover {
  box-shadow: 0 8px 28px var(--accent-glow);
  transform: translateY(-1px);
}
.plan-btn-enterprise {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.8);
}

/* ═══════════════════════════════════════════════
   最近项目区
═══════════════════════════════════════════════ */
.recent-section {
  padding: 100px 0;
  background: #fff;
}
.btn-new-project {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 10px;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-new-project:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

/* 登录提示蒙层 */
.login-prompt {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 280px;
}
.lp-inner {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(10px);
  text-align: center;
  padding: 40px;
}
.lp-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 22px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.lp-inner h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.lp-inner p  { font-size: 14px; color: var(--gray-600); margin-bottom: 24px; }
.lp-btns { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.lp-btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 10px 22px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.lp-btn-primary:hover { background: var(--accent-dark); }
.lp-btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
  padding: 10px 22px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.lp-btn-secondary:hover { background: var(--gray-200); }

/* ═══════════════════════════════════════════════
   FAQ
═══════════════════════════════════════════════ */
.faq-section {
  padding: 100px 0;
  background: var(--gray-50);
}
.faq-inner { max-width: 720px; }
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(255,77,0,.2); }
.faq-item.open   { border-color: rgba(255,77,0,.3); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-900);
  gap: 12px;
}
.faq-q i { 
  flex-shrink: 0;
  color: var(--gray-400);
  transition: transform 0.3s;
}
.faq-item.open .faq-q i { transform: rotate(180deg); color: var(--accent); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.7;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 20px;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding: 0 20px 18px;
}

/* ═══════════════════════════════════════════════
   Footer
═══════════════════════════════════════════════ */
.footer {
  background: var(--left-bg);
  border-top: 1px solid rgba(255,255,255,.06);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-top {
  display: flex;
  gap: 60px;
  padding: 60px 0 40px;
  flex-wrap: wrap;
}
.footer-brand {
  flex: 0 0 240px;
}
.footer-tagline {
  font-size: 13px;
  color: rgba(255,255,255,.4);
  margin: 14px 0 20px;
  line-height: 1.7;
}
.footer-socials {
  display: flex;
  gap: 12px;
}
.footer-socials a {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.5);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}
.footer-socials a:hover {
  background: rgba(255,77,0,.25);
  color: #fff;
}

.footer-links-group {
  flex: 1;
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.flg {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.flg strong {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  margin-bottom: 4px;
}
.flg a {
  font-size: 13px;
  color: rgba(255,255,255,.55);
  transition: var(--transition);
}
.flg a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,.06);
  font-size: 12px;
  color: rgba(255,255,255,.3);
  flex-wrap: wrap;
  gap: 8px;
}

/* ═══════════════════════════════════════════════
   模态框
═══════════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 2000;
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -42%) scale(0.96);
  z-index: 2100;
  width: 90%;
  max-width: 440px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 36px 28px;
  box-shadow: 0 24px 80px rgba(0,0,0,.22);
  opacity: 0;
  pointer-events: none;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  max-height: 90vh;
  overflow-y: auto;
}
.modal.active {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}
.modal-close {
  position: absolute;
  top: 14px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal-close:hover { background: var(--gray-200); color: var(--gray-900); }

.modal-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-mid);
  margin-bottom: 20px;
}
.modal-logo i {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--accent), var(--brand-mid));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 13px;
}
.modal-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 6px;
}
.modal-sub {
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 24px;
}
.modal-sub strong { color: var(--brand); }

/* 表单 */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}
.input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  padding: 10px 14px;
  transition: var(--transition);
  background: var(--gray-50);
}
.input-wrap:focus-within {
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(255,77,0,.08);
}
.input-wrap > i {
  color: var(--gray-400);
  font-size: 14px;
  flex-shrink: 0;
}
.input-wrap input,
.input-wrap select {
  font-size: 14px;
  color: var(--gray-900);
  background: none;
}
.input-wrap input::placeholder { color: var(--gray-400); }
.select-wrap { cursor: pointer; }
.input-wrap select { cursor: pointer; }
.pwd-toggle {
  color: var(--gray-400);
  font-size: 14px;
  flex-shrink: 0;
  transition: var(--transition);
}
.pwd-toggle:hover { color: var(--brand); }

.form-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.checkbox-label {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--gray-600);
  cursor: pointer;
  white-space: nowrap;
}
.checkbox-label input[type="checkbox"] {
  width: auto !important;
  flex-shrink: 0;
  accent-color: var(--brand-mid);
}
.forgot-link { font-size: 13px; color: var(--accent); font-weight: 500; }
.forgot-link:hover { text-decoration: underline; }

.form-msg {
  font-size: 13px;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 14px;
}
.form-msg.error   { background: #FEF2F2; color: #EF4444; }
.form-msg.success { background: #ECFDF5; color: #10B981; }

.form-submit {
  width: 100%;
  padding: 13px 20px;
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: 0 4px 16px var(--accent-glow);
}
.form-submit:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.divider-or {
  text-align: center;
  margin: 18px 0;
  position: relative;
  color: var(--gray-400);
  font-size: 12px;
}
.divider-or::before,
.divider-or::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 42%;
  height: 1px;
  background: var(--gray-200);
}
.divider-or::before { left: 0; }
.divider-or::after  { right: 0; }

.form-oauth {
  width: 100%;
  padding: 11px 20px;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: var(--transition);
  background: #fff;
}
.form-oauth:hover { border-color: var(--gray-400); background: var(--gray-50); }

.form-switch {
  text-align: center;
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 16px;
}
.form-switch a {
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
}
.form-switch a:hover { text-decoration: underline; }
.form-terms {
  text-align: center;
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 12px;
}
.form-terms a { color: var(--accent); }

/* 联系模态框 */
.modal-contact {
  max-width: 440px;
}

/* ═══════════════════════════════════════════════
   Toast
═══════════════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--gray-900);
  color: #fff;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ═══════════════════════════════════════════════
   响应式
═══════════════════════════════════════════════ */
@media (max-width: 900px) {
  .split-container {
    display: flex !important;
    flex-direction: column;
    transition: none;
  }
  .split-left, .split-right {
    margin-left: 0 !important;
    padding: 52px 28px !important;
    flex: 1 !important;
    transition: none !important;
  }
  /* 移动端隐藏斜切伪元素 */
  .split-left::before { display: none !important; }
  .split-container.expand-left .split-left,
  .split-container.expand-left .split-right,
  .split-container.expand-right .split-right,
  .split-container.expand-right .split-left { flex: 1 !important; }
  .split-divider { display: none; }
  .panel-deco { display: none; }
  /* 移动端右侧两列恢复单列 */
  .panel-bottom-row {
    flex-direction: column;
    gap: 20px;
  }
  .panel-right-col .panel-cta {
    align-self: stretch;
    justify-content: center;
  }

  .nav-links { display: none; }
  .hamburger { display: block; }
  .btn-login  { display: none; }
  .btn-register { font-size: 13px; padding: 7px 14px; }

  .hero-sub { gap: 20px; }
  .plans-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .platforms-grid { grid-template-columns: repeat(2, 1fr); }
  .credits-explain { flex-direction: column; gap: 20px; }
  .ce-arrow { transform: rotate(90deg); }
  .footer-top { flex-direction: column; gap: 32px; }
  .footer-links-group { gap: 28px; }
}

@media (max-width: 540px) {
  .features-grid { grid-template-columns: 1fr; }
  .platforms-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 1.6rem; }
  .panel-title   { font-size: 1.8rem; }
  .modal { padding: 28px 20px; }
}

/* ═══════════════════════════════════════════════
   工具类
═══════════════════════════════════════════════ */
.loading {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════════
   新增：步骤指示器
═══════════════════════════════════════════════ */
.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 18px 0 24px;
}
.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.step-item span {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--gray-200);
  color: var(--gray-400);
  font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  transition: all .3s;
}
.step-item label {
  font-size: 11px; color: var(--gray-400); white-space: nowrap;
}
.step-item.active span {
  background: var(--brand-mid);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(124,58,237,.15);
}
.step-item.active label { color: var(--brand-mid); font-weight: 600; }
.step-item.done span {
  background: #10B981;
  color: #fff;
}
.step-item.done label { color: #10B981; }
.step-line {
  flex: 1;
  min-width: 40px;
  height: 2px;
  background: var(--gray-200);
  margin: 0 6px;
  margin-bottom: 18px;
}
.step-line-done { background: #10B981; }

/* ═══════════════════════════════════════════════
   新增：OTP 验证码输入框
═══════════════════════════════════════════════ */
.otp-group {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin: 20px 0;
}
.otp-input {
  width: 46px; height: 54px;
  border: 2px solid var(--gray-200);
  border-radius: 10px;
  text-align: center;
  font-size: 22px; font-weight: 700;
  color: var(--gray-900);
  background: var(--gray-50);
  transition: all .2s;
  outline: none;
  font-family: 'Space Grotesk', monospace;
}
.otp-input:focus {
  border-color: var(--brand-mid);
  background: #fff;
  box-shadow: 0 0 0 3px var(--brand-glow);
}
.otp-input.filled {
  border-color: var(--brand-mid);
  background: var(--brand-light);
  color: var(--brand);
}
.otp-input.error {
  border-color: #EF4444;
  background: #FEF2F2;
  animation: shake .3s ease;
}

/* ═══════════════════════════════════════════════
   新增：密码强度条
═══════════════════════════════════════════════ */
.pwd-strength-bar {
  height: 4px;
  background: var(--gray-200);
  border-radius: 4px;
  margin-top: 6px;
  overflow: hidden;
}
.psb-fill {
  height: 100%;
  border-radius: 4px;
  width: 0%;
  transition: width .4s ease, background .4s ease;
}
.pwd-strength-label {
  font-size: 12px;
  margin-top: 4px;
  font-weight: 500;
  min-height: 16px;
}

/* ═══════════════════════════════════════════════
   新增：重新发送倒计时
═══════════════════════════════════════════════ */
.resend-countdown {
  color: var(--gray-400);
  font-size: 13px;
}

/* ═══════════════════════════════════════════════
   新增：API 加载状态动画
═══════════════════════════════════════════════ */
.api-loading {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}
.api-loading::after {
  content: '';
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ═══════════════════════════════════════════════
   完善：Toast 样式增强
═══════════════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--gray-900);
  color: #fff;
  padding: 12px 22px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 8px 32px rgba(0,0,0,.22);
  opacity: 0;
  transition: opacity .3s ease, transform .3s ease;
  z-index: 9999;
  max-width: 90vw;
  text-align: center;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast.toast-success { background: #10B981; }
.toast.toast-error   { background: #EF4444; }
.toast.toast-info    { background: var(--brand-mid); }

/* ═══════════════════════════════════════════════
   完善：form-msg 样式增强
═══════════════════════════════════════════════ */
.form-msg {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 500;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.form-msg.error   { background: #FEF2F2; color: #DC2626; border: 1px solid #FECACA; }
.form-msg.success { background: #F0FDF4; color: #16A34A; border: 1px solid #BBF7D0; }

/* ═══════════════════════════════════════════════
   完善：按钮禁用 + 加载状态
═══════════════════════════════════════════════ */
.form-submit:disabled {
  opacity: .7;
  cursor: not-allowed;
  transform: none !important;
}
.loading-spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

/* ═══════════════════════════════════════════════
   Shake 动画
═══════════════════════════════════════════════ */
@keyframes shake {
  0%,100%{ transform: translateX(0); }
  20%    { transform: translateX(-5px); }
  40%    { transform: translateX(5px); }
  60%    { transform: translateX(-4px); }
  80%    { transform: translateX(3px); }

/* ── 账户设置 Modal ── */
.settings-tab {
  flex: 1; padding: 6px 0; border: none; background: transparent;
  border-radius: 6px; font-size: 13px; font-weight: 500; color: #6B7280;
  cursor: pointer; transition: all .15s;
}
.settings-tab.active { background: #fff; color: #7C3AED; font-weight: 700;
  box-shadow: 0 1px 4px rgba(0,0,0,.08); }