/* ==========================================================================
   GPT68 — Light Aurora
   主题：粉/紫/蓝柔和渐变 + 纯白卡片 + 亮蓝 CTA + 黑色药丸
   参考：redeemgpt.com 风格
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  /* Surfaces */
  --bg-base: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-tint: #F1F5F9;

  /* Gradient stops */
  /* Gradient stops — Apple iOS 风格饱和糖果色 */
  --grad-pink: #FFC0D9;
  --grad-peach: #FFCDA8;
  --grad-lavender: #C9B8FF;
  --grad-blue: #A8C8FF;
  --grad-cyan: #B5E4FF;
  --grad-mint: #B8F0D4;

  /* Ink */
  --ink-1: #0F172A;
  --ink-2: #334155;
  --ink-3: #64748B;
  --ink-4: #94A3B8;
  --ink-5: #CBD5E1;

  /* Brand */
  --blue-500: #3B82F6;
  --blue-600: #2563EB;
  --blue-700: #1D4ED8;
  --blue-50:  #EFF6FF;
  --blue-100: #DBEAFE;

  --dark-pill: #0F172A;
  --dark-pill-hover: #1E293B;

  /* Lines */
  --line-1: rgba(15, 23, 42, 0.06);
  --line-2: rgba(15, 23, 42, 0.10);
  --line-3: rgba(15, 23, 42, 0.16);

  /* Typography — 中文字体优先，中英混排时字重/x-height 更整齐 */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Noto Sans SC", system-ui, sans-serif;

  /* Layout */
  --shell: 1200px;
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px -8px rgba(15, 23, 42, 0.10), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 40px -16px rgba(15, 23, 42, 0.12), 0 4px 12px rgba(15, 23, 42, 0.05);
  --shadow-pop: 0 24px 50px -12px rgba(59, 130, 246, 0.18), 0 8px 16px -4px rgba(15, 23, 42, 0.06);
  --shadow-btn: 0 4px 12px -2px rgba(59, 130, 246, 0.35);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

img, svg { display: block; max-width: 100%; }

/* 防御性兜底：行内 SVG（在 inline-flex 容器中）若无显式尺寸，限制最大尺寸防止撑大父容器
   特别保护：plans-tip、scenario-rec、btn 等内嵌图标 */
svg:not([width]):not([height]) {
  max-width: 100%;
  max-height: 2.5em;
}
h1, h2, h3, h4, p { margin: 0; }

a { color: inherit; text-decoration: none; }

button {
  font-family: inherit;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
  padding: 0;
}

ul, ol { margin: 0; padding: 0; list-style: none; }

.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;
}

::selection { background: var(--blue-100); color: var(--ink-1); }

/* ---------- 3. Background gradient ---------- */
.bg-deco {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Apple iOS 风格背景渐变 — 5 个饱和色 blob 互相融合 */
.bg-mesh {
  position: absolute;
  inset: -10%;
  background:
    radial-gradient(circle 60vw at 12% 8%,  var(--grad-pink)     0%, transparent 45%),
    radial-gradient(circle 55vw at 88% 18%, var(--grad-blue)     0%, transparent 45%),
    radial-gradient(circle 65vw at 18% 75%, var(--grad-lavender) 0%, transparent 50%),
    radial-gradient(circle 55vw at 92% 78%, var(--grad-peach)    0%, transparent 45%),
    radial-gradient(circle 50vw at 50% 50%, var(--grad-cyan)     0%, transparent 55%),
    var(--bg-base);
  opacity: 1;
  filter: saturate(0.88);
  animation: meshDrift 32s ease-in-out infinite alternate;
}

/* 在网页内容区放一层"奶白磨砂"让色块更柔，但保留色彩饱和度 */
.bg-deco::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.42) 0%, rgba(255,255,255,0.28) 50%, rgba(255,255,255,0.42) 100%);
  pointer-events: none;
}

@keyframes meshDrift {
  0%   { transform: translate(0, 0)        scale(1); }
  50%  { transform: translate(2%, -1.5%)   scale(1.03); }
  100% { transform: translate(-2%, 1.5%)   scale(1.06); }
}

@media (prefers-reduced-motion: reduce) {
  .bg-mesh { animation: none; }
}

/* ---------- 4. Layout primitives ---------- */
.shell {
  width: min(var(--shell), calc(100% - 48px));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

main { position: relative; z-index: 1; }

.section { padding: 96px 0; position: relative; }

.section-head {
  max-width: 720px;
  margin: 0 0 56px;
}

/* 黑色圆角小方块装数字 — 加上微妙渐变和侧边连接线 */
.section-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--ink-1) 0%, #1E293B 100%);
  color: #fff;
  font-weight: 800;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  margin-bottom: 18px;
  box-shadow:
    0 8px 20px -4px rgba(15, 23, 42, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  position: relative;
}

/* editorial 排版：数字方块旁边的英文小标签 + 一条短连接线 */
.section-num::after {
  content: attr(data-label);
  position: absolute;
  left: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--ink-2);
  white-space: nowrap;
  text-transform: uppercase;
  padding-left: 24px;
  border-left: 1px solid var(--line-3);
}

.section-num::before {
  content: "";
  position: absolute;
  left: calc(100% + 14px);
  top: 50%;
  width: 16px;
  height: 1px;
  background: var(--line-3);
  z-index: 1;
}

/* 各板块对应的英文小标签（不改 HTML 文案，用属性选择器注入） */
#plans   .section-num::after { content: "PRICING"; }
#reviews .section-num::after { content: "SOCIAL PROOF"; }
#flow    .section-num::after { content: "PROCESS"; }
#trust   .section-num::after { content: "TRUST & SAFETY"; }
#faq     .section-num::after { content: "FAQ"; }
#contact .section-num::after { content: "GET IN TOUCH"; }

/* 移动端把英文小标签隐掉，避免折行 */
@media (max-width: 480px) {
  .section-num::after,
  .section-num::before { display: none; }
}

.section-title {
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--ink-1);
  margin-bottom: 12px;
}

.section-sub {
  font-size: 1rem;
  color: var(--ink-3);
  line-height: 1.65;
  max-width: 560px;
}

/* ---------- 5. Top note ---------- */
.topnote {
  position: relative;
  z-index: 10;
  background: rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid var(--line-1);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.topnote-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 0;
  font-size: 0.85rem;
}

.topnote-dot {
  flex-shrink: 0;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.18);
  animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.topnote-label {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #10B981;
  padding: 2px 8px;
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.06);
}

.topnote p {
  color: var(--ink-2);
  font-size: 0.86rem;
  line-height: 1.55;
  margin: 0;
}

/* ---------- 6. Topbar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(14px) saturate(180%);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition:
    background 320ms ease,
    border-color 320ms ease,
    box-shadow 320ms ease,
    backdrop-filter 320ms ease;
}

/* 滚动到 hero 之外时，topbar 变得更"实"，加一点蓝色微光 */
.topbar.is-scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom-color: rgba(15, 23, 42, 0.06);
  box-shadow:
    0 8px 28px -10px rgba(15, 23, 42, 0.10),
    0 1px 0 rgba(255, 255, 255, 0.5) inset,
    0 0 0 1px rgba(255, 255, 255, 0.4) inset;
}

.topbar.is-scrolled .topbar-inner {
  height: 60px;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  transition: height 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: opacity 200ms ease;
}

.brand:hover { opacity: 0.7; }

.brand-mark {
  width: 30px; height: 30px;
  display: inline-flex;
  color: var(--blue-600);
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink-1);
}

.brand-name em {
  font-style: normal;
  background: linear-gradient(90deg, #3B82F6 0%, #8B5CF6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  font-weight: 900;
  padding: 0 1px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  position: relative;
}

/* 当前激活项的"滑动指示器"小药丸 */
.nav-indicator {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 32px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.10), rgba(139, 92, 246, 0.10));
  border: 1px solid rgba(59, 130, 246, 0.18);
  opacity: 0;
  pointer-events: none;
  transition:
    transform 380ms cubic-bezier(0.22, 1, 0.36, 1),
    width 380ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 240ms ease;
  z-index: 0;
}

.nav-indicator.is-visible { opacity: 1; }

.nav > a {
  position: relative;
  z-index: 1;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-3);
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 220ms ease, background 220ms ease, transform 220ms ease;
}

.nav > a:hover { color: var(--ink-1); transform: translateY(-1px); }
.nav > a.is-active { color: var(--blue-700); font-weight: 600; }

/* 顶部滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  z-index: 100;
  pointer-events: none;
}

.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg,
    var(--blue-500) 0%,
    #8B5CF6 50%,
    #EC4899 100%);
  box-shadow: 0 1px 6px rgba(59, 130, 246, 0.5);
  transition: width 80ms linear;
  border-top-right-radius: 2px;
  border-bottom-right-radius: 2px;
}

/* 联系客服按钮 — 黑底白字，跟整体黑药丸体系一致 */
.nav-cta {
  margin-left: 10px !important;
  font-weight: 700 !important;
  padding: 8px 18px !important;
  background: linear-gradient(135deg, var(--ink-1) 0%, #1E293B 100%) !important;
  color: #fff !important;
  box-shadow:
    0 6px 16px -3px rgba(15, 23, 42, 0.30),
    0 0 0 1.5px rgba(255, 255, 255, 0.7),
    inset 0 1px 0 rgba(255, 255, 255, 0.10) !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #1E293B 0%, #334155 100%) !important;
  box-shadow:
    0 10px 22px -4px rgba(15, 23, 42, 0.40),
    0 0 0 1.5px rgba(255, 255, 255, 0.85),
    inset 0 1px 0 rgba(255, 255, 255, 0.15) !important;
}

.nav-cta svg {
  width: 14px;
  height: 14px;
}

/* ---------- 7. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 180ms cubic-bezier(0.22, 1, 0.36, 1),
              background 180ms ease,
              border-color 180ms ease,
              box-shadow 180ms ease;
  white-space: nowrap;
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.btn-sm { padding: 7px 16px; font-size: 0.86rem; }

/* 亮蓝主按钮 — 柔和单色过渡，无明显分界
   关键：background-clip: padding-box 防止渐变穿透 1.5px transparent border 形成"线" */
.btn-primary {
  background: linear-gradient(180deg, #3D8AF7 0%, var(--blue-600) 100%);
  background-clip: padding-box;
  -webkit-background-clip: padding-box;
  color: #fff;
  border: 0;
  box-shadow:
    0 6px 16px -2px rgba(59, 130, 246, 0.40),
    0 2px 5px rgba(59, 130, 246, 0.20);
}

.btn-primary:hover {
  background: linear-gradient(180deg, #4592F8 0%, var(--blue-700) 100%);
  background-clip: padding-box;
  -webkit-background-clip: padding-box;
  transform: translateY(-1px);
  box-shadow:
    0 10px 22px -2px rgba(59, 130, 246, 0.50),
    0 3px 8px rgba(59, 130, 246, 0.25);
}

.btn-primary:active { transform: translateY(0); }

/* 深黑药丸 — 来自 redeemgpt 的"卡密批量查询"按钮 */
.btn-dark {
  background: var(--dark-pill);
  color: #fff;
}

.btn-dark:hover {
  background: var(--dark-pill-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -4px rgba(15, 23, 42, 0.3);
}

/* 描边按钮 */
.btn-outline {
  background: #fff;
  color: var(--ink-1);
  border-color: var(--line-3);
}

.btn-outline:hover {
  background: var(--bg-tint);
  border-color: var(--ink-3);
}

/* 透明 ghost */
.btn-ghost {
  background: transparent;
  color: var(--ink-2);
  border-color: transparent;
}

.btn-ghost:hover {
  background: rgba(15, 23, 42, 0.04);
  color: var(--ink-1);
}

.btn-block { width: 100%; }

/* ---------- 8. Hero ---------- */
.hero {
  padding: 80px 0 100px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.9fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line-2);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-2);
  margin-bottom: 28px;
  box-shadow: var(--shadow-xs);
}

.eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue-600);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}

.hero-title {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.038em;
  color: var(--ink-1);
  margin-bottom: 24px;
}

.hero-title-em {
  background: linear-gradient(120deg,
    var(--blue-600) 0%,
    #8B5CF6 30%,
    #EC4899 50%,
    #8B5CF6 70%,
    var(--blue-600) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: gradientShimmer 6s ease-in-out infinite;
  display: inline-block;
}

@keyframes gradientShimmer {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-title-em { animation: none; }
}

.hero-lead {
  font-size: 1.08rem;
  color: var(--ink-3);
  line-height: 1.65;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-lead strong {
  color: var(--ink-1);
  font-weight: 700;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.micro-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.micro-list li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px 7px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line-2);
  font-size: 0.82rem;
  color: var(--ink-2);
  transition: background 180ms ease, border-color 180ms ease;
}

.micro-list li svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  color: var(--blue-600);
}

.micro-list li:hover {
  background: rgba(255, 255, 255, 1);
  border-color: var(--line-3);
}

/* ---------- 9. Hero stat card ---------- */
.hero-aside { position: relative; }

.stat-card {
  position: relative;
  padding: 30px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(ellipse 360px 200px at 100% 0%, rgba(59, 130, 246, 0.07) 0%, transparent 70%),
    rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line-2);
  box-shadow:
    0 30px 60px -20px rgba(15, 23, 42, 0.15),
    0 8px 16px -6px rgba(15, 23, 42, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.stat-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.stat-card-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-2);
}

.stat-card-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #10B981;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.1);
}

.pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
  animation: pulseDot 2s ease-in-out infinite;
}

/* hero 右上角 LIVE 指示灯 — 加上呼吸感，强化"实时"暗示 */
.stat-card-live .pulse {
  animation: pulseLive 1.6s ease-in-out infinite;
}

@keyframes pulseLive {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.20);
  }
  50% {
    transform: scale(1.15);
    box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
  }
}

.stat-hero {
  padding-bottom: 24px;
  border-bottom: 1px dashed var(--line-2);
  margin-bottom: 24px;
}

.stat-figure {
  font-size: clamp(2.8rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.045em;
  color: var(--ink-1);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  background: linear-gradient(135deg, var(--ink-1) 0%, #1E293B 50%, var(--blue-700) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-figure-cap {
  font-size: 0.85rem;
  color: var(--ink-3);
  margin-top: 8px;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 24px;
  margin-bottom: 24px;
}

.stat-cell-num {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink-1);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-cell-num small {
  font-size: 0.55em;
  font-weight: 600;
  color: var(--blue-600);
  margin-left: 3px;
  letter-spacing: 0;
}

.stat-cell-cap {
  font-size: 0.82rem;
  color: var(--ink-3);
  margin-top: 6px;
}

.brand-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 20px;
  border-top: 1px dashed var(--line-2);
}

.brand-strip span {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ink-3);
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  background: var(--bg-tint);
}

/* ---------- 10. Plan cards ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px 24px 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1.5px solid var(--line-1);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  isolation: isolate;
  transition:
    transform 380ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 320ms ease,
    border-color 280ms ease,
    background 320ms ease;
}

/* 卡片右上角的品牌色斜角光晕（始终可见，hover/选中时增强） */
.plan-card::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, currentColor 0%, transparent 65%);
  opacity: 0.10;
  z-index: -1;
  transition: opacity 320ms ease, transform 480ms cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
}

.plan-card:hover::before { opacity: 0.18; transform: scale(1.1); }
.plan-card.is-selected::before { opacity: 0.28; transform: scale(1.15); }

/* 各品牌的色调 — 给卡片整体染一抹品牌色 */
.plan-card[data-brand="chatgpt"] { color: #10A37F; }
.plan-card[data-brand="claude"]  { color: #D97757; }
.plan-card[data-brand="gemini"]  { color: #4285F4; }
.plan-card[data-brand="grok"]    { color: #475569; }
.plan-card[data-brand="kiro"]    { color: #F59E0B; }
.plan-card[data-brand="cursor"]  { color: #6366F1; }

.plan-card:hover {
  transform: translateY(-6px);
}

.plan-card-stripe {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-500), #8B5CF6);
  z-index: 1;
}

.plan-card[data-brand="chatgpt"] .plan-card-stripe { background: linear-gradient(90deg, #10A37F, #1FBA8E); }
.plan-card[data-brand="claude"]  .plan-card-stripe { background: linear-gradient(90deg, #D97757, #F2A47B); }
.plan-card[data-brand="gemini"]  .plan-card-stripe { background: linear-gradient(90deg, #4285F4, #9168C0, #EA4335); }
.plan-card[data-brand="grok"]    .plan-card-stripe { background: linear-gradient(90deg, #475569, #94A3B8); }
.plan-card[data-brand="kiro"]    .plan-card-stripe { background: linear-gradient(90deg, #FF9900, #FFB347); }
.plan-card[data-brand="cursor"]  .plan-card-stripe { background: linear-gradient(90deg, #6366F1, #A78BFA); }

/* 选中态（默认在 ChatGPT 上，跟随鼠标移动到悬浮卡片上）
   配色：浅薰衣草底（呼应背景渐变） + 深色边框 + 深色阴影
   不用蓝色调，与整体黑药丸+暖色背景体系统一 */
.plan-card.is-selected {
  background: linear-gradient(180deg, #F4F0FE 0%, #fff 65%);
  border-color: var(--ink-1);
  box-shadow:
    0 28px 60px -16px rgba(15, 23, 42, 0.30),
    0 0 0 4px rgba(15, 23, 42, 0.06),
    0 12px 24px -6px rgba(15, 23, 42, 0.10);
  transform: translateY(-8px);
}

.plan-card.is-selected .plan-card-stripe {
  height: 5px;
}

/* 选中态时，购买按钮自动变成黑色药丸，跟整体黑色高亮体系一致 */
.plan-card.is-selected .btn-outline {
  background: var(--ink-1);
  color: #fff;
  border-color: var(--ink-1);
}

.plan-card.is-selected .btn-outline:hover {
  background: #1E293B;
  border-color: #1E293B;
}

/* 鼠标悬浮态优先级最低，被 is-selected 覆盖即可 */
.plan-card:not(.is-selected):hover {
  box-shadow:
    0 18px 38px -12px rgba(15, 23, 42, 0.18),
    0 0 0 2px rgba(59, 130, 246, 0.25),
    0 4px 10px rgba(15, 23, 42, 0.05);
  border-color: rgba(59, 130, 246, 0.40);
}

.plan-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--ink-1) 0%, #1E293B 100%);
  color: #fff;
  z-index: 3;
  box-shadow:
    0 6px 14px -2px rgba(15, 23, 42, 0.40),
    0 0 0 2px rgba(255, 255, 255, 0.85),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.plan-badge::before {
  content: "★";
  margin-right: 4px;
  font-size: 0.65rem;
  color: #FCD34D;
}

.plan-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
}

.plan-head-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

/* AI 品牌图标方块 — 未选中：品牌色淡底 + 品牌色描绘 */
.plan-logo {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-1);
  background: var(--bg-tint);
  color: var(--ink-2);
  transition:
    background 260ms ease,
    color 260ms ease,
    border-color 260ms ease,
    transform 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

.plan-logo svg {
  width: 20px;
  height: 20px;
}

/* 各品牌的图标淡底色 + 主色 */
.plan-card[data-brand="chatgpt"] .plan-logo { background: #ECFDF5; color: #10A37F; border-color: rgba(16, 163, 127, 0.15); }
.plan-card[data-brand="claude"]  .plan-logo { background: #FFF7ED; color: #D97757; border-color: rgba(217, 119, 87, 0.18); }
.plan-card[data-brand="gemini"]  .plan-logo { background: #EFF6FF; color: #4285F4; border-color: rgba(66, 133, 244, 0.18); }
.plan-card[data-brand="grok"]    .plan-logo { background: #F1F5F9; color: #475569; border-color: rgba(71, 85, 105, 0.18); }
.plan-card[data-brand="kiro"]    .plan-logo { background: #FFFBEB; color: #F59E0B; border-color: rgba(245, 158, 11, 0.20); }
.plan-card[data-brand="cursor"]  .plan-logo { background: #EEF2FF; color: #6366F1; border-color: rgba(99, 102, 241, 0.18); }

/* 选中态：图标方块跟卡片一起变黑 + 放大 + 阴影更深
   保留与品牌色的关联感 → 通过 box-shadow ring 留一圈品牌色光晕 */
.plan-card.is-selected .plan-logo {
  background: var(--ink-1);
  color: #fff;
  border-color: var(--ink-1);
  transform: scale(1.06);
  box-shadow:
    0 8px 20px -4px rgba(15, 23, 42, 0.35),
    0 0 0 3px rgba(255, 255, 255, 0.9);
}

/* 选中卡片图标外环 — 各品牌专属光晕 */
.plan-card.is-selected[data-brand="chatgpt"] .plan-logo {
  box-shadow: 0 8px 20px -4px rgba(16, 163, 127, 0.45),
              0 0 0 3px rgba(255, 255, 255, 0.9),
              0 0 0 5px rgba(16, 163, 127, 0.25);
}
.plan-card.is-selected[data-brand="claude"] .plan-logo {
  box-shadow: 0 8px 20px -4px rgba(217, 119, 87, 0.45),
              0 0 0 3px rgba(255, 255, 255, 0.9),
              0 0 0 5px rgba(217, 119, 87, 0.25);
}
.plan-card.is-selected[data-brand="gemini"] .plan-logo {
  box-shadow: 0 8px 20px -4px rgba(66, 133, 244, 0.45),
              0 0 0 3px rgba(255, 255, 255, 0.9),
              0 0 0 5px rgba(66, 133, 244, 0.25);
}
.plan-card.is-selected[data-brand="grok"] .plan-logo {
  box-shadow: 0 8px 20px -4px rgba(71, 85, 105, 0.45),
              0 0 0 3px rgba(255, 255, 255, 0.9),
              0 0 0 5px rgba(71, 85, 105, 0.3);
}
.plan-card.is-selected[data-brand="kiro"] .plan-logo {
  box-shadow: 0 8px 20px -4px rgba(245, 158, 11, 0.45),
              0 0 0 3px rgba(255, 255, 255, 0.9),
              0 0 0 5px rgba(245, 158, 11, 0.28);
}
.plan-card.is-selected[data-brand="cursor"] .plan-logo {
  box-shadow: 0 8px 20px -4px rgba(99, 102, 241, 0.45),
              0 0 0 3px rgba(255, 255, 255, 0.9),
              0 0 0 5px rgba(99, 102, 241, 0.25);
}

/* 文字标签 — 不再用药丸，改用清晰的文字 */
.plan-tag {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-1);
  letter-spacing: -0.01em;
}

.plan-meta {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink-4);
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.018em;
  color: var(--ink-1);
  line-height: 1.25;
}

.plan-sub {
  font-size: 0.88rem;
  color: var(--ink-3);
  margin-top: -8px;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 2px;
  padding: 14px 0 18px;
  border-bottom: 1px dashed var(--line-2);
  font-feature-settings: "tnum" 1;
  position: relative;
}

.plan-price-currency {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink-3);
  align-self: flex-end;
  transform: translateY(-8px);
  margin-right: 2px;
}

.plan-price-num {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.045em;
  color: var(--ink-1);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  background: linear-gradient(180deg, var(--ink-1) 0%, #1E293B 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.plan-price-unit {
  font-size: 0.85rem;
  color: var(--ink-4);
  margin-left: 6px;
  font-weight: 500;
}

.plan-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--ink-2);
  line-height: 1.5;
}

.plan-features li::before {
  content: "";
  flex-shrink: 0;
  margin-top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--blue-50);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-size: 10px;
  background-position: center;
  background-repeat: no-repeat;
}

.plan-card .btn { margin-top: 4px; }

/* ---------- 11. Timeline ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

/* 贯穿连接线：覆盖在 step-num 方块的垂直中心高度，端点带圆点
   z-index 0 让卡片白底盖在其上，露出的部分形成"卡片被串起来"的效果 */
.timeline::before {
  content: "";
  position: absolute;
  top: 52px;
  left: 5%;
  right: 5%;
  height: 2px;
  background: linear-gradient(90deg,
    rgba(59, 130, 246, 0) 0%,
    #3B82F6 12%,
    #6366F1 50%,
    #8B5CF6 88%,
    rgba(139, 92, 246, 0) 100%);
  z-index: 0;
  pointer-events: none;
  border-radius: 2px;
}

/* 平板降到 2x2 */
@media (max-width: 960px) {
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .timeline::before { display: none; }
}

/* 手机端单列 — 在另一个 @media 里已经处理 */

.step {
  position: relative;
  padding: 30px 28px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--line-1);
  box-shadow: var(--shadow-sm);
  z-index: 1;
  transition: transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 280ms ease,
              border-color 240ms ease;
}

.step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(59, 130, 246, 0.25);
}

/* step-num 数字方块 — 蓝紫渐变，跟连接线呼应，作为流程模块的视觉锚点 */
.step-num {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #3B82F6 0%, #6366F1 60%, #8B5CF6 100%);
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 22px;
  box-shadow:
    0 8px 20px -4px rgba(99, 102, 241, 0.40),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.step-title {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink-1);
  margin-bottom: 8px;
}

.step-text {
  font-size: 0.92rem;
  color: var(--ink-3);
  line-height: 1.6;
}

/* ---------- 12. Features ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.feature {
  position: relative;
  display: flex;
  gap: 18px;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--line-1);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  isolation: isolate;
  transition: transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 280ms ease,
              border-color 240ms ease;
}

/* 右上角的彩色 blob 装饰 */
.feature::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, currentColor 0%, transparent 65%);
  opacity: 0.08;
  z-index: -1;
  transition: opacity 320ms ease, transform 480ms cubic-bezier(0.22, 1, 0.36, 1);
}

.feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature:hover::before {
  opacity: 0.16;
  transform: scale(1.1);
}

.feature-accent {
  background: linear-gradient(180deg, #ECFDF5, #fff 70%);
  border-color: rgba(16, 185, 129, 0.18);
}

.feature-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--blue-50);
  color: var(--blue-600);
  box-shadow:
    0 4px 12px -2px rgba(59, 130, 246, 0.15),
    inset 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.feature-icon svg { width: 24px; height: 24px; }

/* 4 张卡片各自配一种品牌淡底 + 主色 icon */
.feature:nth-child(1) { color: #2563EB; }
.feature:nth-child(1) .feature-icon {
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  color: #2563EB;
  box-shadow: 0 6px 14px -3px rgba(37, 99, 235, 0.22), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.feature:nth-child(2) { color: #059669; }
.feature:nth-child(2) .feature-icon {
  background: linear-gradient(135deg, #ECFDF5, #D1FAE5);
  color: #059669;
  box-shadow: 0 6px 14px -3px rgba(5, 150, 105, 0.22), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.feature:nth-child(3) { color: #7C3AED; }
.feature:nth-child(3) .feature-icon {
  background: linear-gradient(135deg, #F5F3FF, #EDE9FE);
  color: #7C3AED;
  box-shadow: 0 6px 14px -3px rgba(124, 58, 237, 0.22), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.feature:nth-child(4) { color: #EA580C; }
.feature:nth-child(4) .feature-icon {
  background: linear-gradient(135deg, #FFF7ED, #FFEDD5);
  color: #EA580C;
  box-shadow: 0 6px 14px -3px rgba(234, 88, 12, 0.22), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.feature-body { flex: 1; min-width: 0; }

.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-1);
  margin-bottom: 6px;
}

.feature-text {
  font-size: 0.92rem;
  color: var(--ink-3);
  line-height: 1.6;
}

/* ---------- 13. FAQ ---------- */
.faq {
  max-width: 860px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--line-1);
  box-shadow: var(--shadow-xs);
  transition: box-shadow 240ms ease, border-color 240ms ease, transform 240ms ease;
  overflow: hidden;
}

.faq-item:hover {
  border-color: var(--line-2);
  transform: translateX(2px);
}

.faq-item.open {
  box-shadow:
    0 12px 28px -10px rgba(59, 130, 246, 0.15),
    0 0 0 1.5px rgba(59, 130, 246, 0.25);
  border-color: transparent;
  transform: none;
}

.faq-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 24px;
  text-align: left;
  cursor: pointer;
}

.faq-q {
  font-size: 1.04rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink-1);
  line-height: 1.45;
  flex: 1;
}

.faq-icon {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--bg-tint);
  position: relative;
  transition: background 200ms ease, transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: var(--ink-2);
  border-radius: 1px;
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1), background 200ms ease;
}

.faq-icon::before { width: 11px; height: 1.6px; transform: translate(-50%, -50%); }
.faq-icon::after  { width: 1.6px; height: 11px; transform: translate(-50%, -50%); }

.faq-item.open .faq-icon {
  background: var(--blue-600);
  transform: rotate(180deg);
}

.faq-item.open .faq-icon::before,
.faq-item.open .faq-icon::after { background: #fff; }
.faq-item.open .faq-icon::after { transform: translate(-50%, -50%) scaleY(0); }

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.faq-body > p {
  padding: 0 24px 22px;
  color: var(--ink-2);
  font-size: 0.94rem;
  line-height: 1.7;
}

/* ---------- 14. CTA ---------- */
.section-cta { padding: 96px 0 120px; }

.cta-panel {
  position: relative;
  padding: 56px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(ellipse 600px 400px at 100% 0%, var(--grad-pink) 0%, transparent 60%),
    radial-gradient(ellipse 500px 350px at 0% 100%, var(--grad-blue) 0%, transparent 60%),
    radial-gradient(ellipse 400px 300px at 50% 50%, var(--grad-lavender) 0%, transparent 70%),
    var(--bg-card);
  background-size: 200% 200%, 200% 200%, 200% 200%, auto;
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  overflow: hidden;
  animation: ctaDrift 18s ease-in-out infinite alternate;
}

@keyframes ctaDrift {
  0%   { background-position: 0% 0%, 100% 100%, 50% 50%, 0 0; }
  100% { background-position: 30% 20%, 70% 80%, 60% 40%, 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  .cta-panel { animation: none; }
}

.cta-copy { position: relative; z-index: 1; }

.cta-title {
  font-size: clamp(2.2rem, 4.2vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ink-1);
  margin: 14px 0 12px;
}

.cta-sub {
  font-size: 1rem;
  color: var(--ink-3);
  margin-bottom: 28px;
  max-width: 480px;
  line-height: 1.65;
}

.cta-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  position: relative;
}

.qr-frame {
  position: relative;
  width: 168px;
  height: 168px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--line-2);
}

/* 票据感虚线外圈 */
.qr-frame::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 16px;
  border: 1.5px dashed rgba(59, 130, 246, 0.35);
  pointer-events: none;
}

/* 右下角"微信"小角标 */
.qr-frame::after {
  content: "微信";
  position: absolute;
  bottom: -10px;
  right: -10px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
  background: linear-gradient(135deg, #07C160, #06AD56);
  border-radius: 999px;
  box-shadow: 0 4px 10px -2px rgba(7, 193, 96, 0.45),
              0 0 0 2px #fff;
  white-space: nowrap;
}

.qr-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px;
}

.qr-cap {
  font-size: 0.88rem;
  color: var(--ink-3);
  text-align: center;
}

/* ---------- 15. Footer ---------- */
.footer {
  padding: 56px 0 40px;
  border-top: 1px solid var(--line-1);
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  z-index: 1;
}

.footer-inner { display: flex; flex-direction: column; gap: 22px; }

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer .brand-mark { width: 24px; height: 24px; }
.footer .brand-name { font-size: 0.98rem; }

.copyright {
  font-size: 0.84rem;
  color: var(--ink-4);
}

.disclaimer {
  font-size: 0.8rem;
  color: var(--ink-4);
  line-height: 1.65;
  padding-top: 20px;
  border-top: 1px dashed var(--line-1);
  max-width: 920px;
}

.disclaimer strong {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--blue-600);
  margin-right: 10px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: var(--blue-50);
  text-transform: uppercase;
}

/* ---------- 15. WeChat 对话框 ---------- */
.section-wechat {
  padding: 96px 0;
}

.section-head-center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  max-width: 680px;
}

.section-head-center .section-num {
  margin-left: auto;
  margin-right: auto;
  display: flex;
  margin-bottom: 36px; /* 为下方英文标签预留空间 */
}

/* 居中布局的 section，英文小标签放数字方块下方，保持对称 */
.section-head-center .section-num::after {
  left: 50%;
  top: calc(100% + 10px);
  transform: translateX(-50%);
  padding-left: 0;
  border-left: none;
}

/* 居中布局下隐藏旁边的连接小线 */
.section-head-center .section-num::before {
  display: none;
}

.section-head-center .section-sub {
  margin-left: auto;
  margin-right: auto;
}

/* 整个聊天面板 — 模拟微信窗口 */
.wechat {
  max-width: 540px;
  margin: 0 auto;
  background: #EDEDED;
  border-radius: 28px;
  overflow: hidden;
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.04),
    0 30px 60px -20px rgba(15, 23, 42, 0.22),
    0 12px 24px -12px rgba(15, 23, 42, 0.10);
  border: 1px solid rgba(15, 23, 42, 0.08);
  position: relative;
}

/* 微信顶部条 */
.wechat-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #F7F7F7;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  font-weight: 600;
  color: var(--ink-1);
}

.wechat-bar-back,
.wechat-bar-dot {
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--ink-3);
  user-select: none;
  width: 24px;
  text-align: center;
  line-height: 1;
}

.wechat-bar-title {
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  color: var(--ink-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 70%;
}

/* 聊天滚动容器 */
.wechat-scroll {
  height: 560px;
  overflow: hidden;
  position: relative;
  background: #EDEDED;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 30px, #000 calc(100% - 30px), transparent 100%);
          mask-image: linear-gradient(to bottom, transparent 0, #000 30px, #000 calc(100% - 30px), transparent 100%);
}

.wechat-track {
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  /* 由 JS 控制 translate3d 做缓慢自动向上滚动 */
  will-change: transform;
}

/* 时间戳 */
.wechat-time {
  align-self: center;
  font-size: 0.72rem;
  color: #B0B0B0;
  background: rgba(180, 180, 180, 0.15);
  padding: 3px 10px;
  border-radius: 4px;
  margin: 8px 0 4px;
}

.wechat-end {
  align-self: center;
  font-size: 0.72rem;
  color: #B0B0B0;
  padding: 14px 0 4px;
}

/* 消息行 */
.msg {
  display: flex;
  gap: 8px;
  max-width: 100%;
}

.msg-left  { justify-content: flex-start; }
.msg-right { justify-content: flex-end; }

.msg-avatar {
  position: relative;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

/* 左侧客户头像右下角的"在线"绿点 — 营造微信真实感 */
.msg-left .msg-avatar::after {
  content: "";
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #10B981;
  border: 2px solid #EDEDED;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.04);
}

/* 9 种用户头像颜色（沿用上版的渐变） */
.msg-avatar[data-color="0"] { background: linear-gradient(135deg, #FF8FA3, #FF6B8A); }
.msg-avatar[data-color="1"] { background: linear-gradient(135deg, #FFB088, #FF8859); }
.msg-avatar[data-color="2"] { background: linear-gradient(135deg, #A78BFA, #7C5CFF); }
.msg-avatar[data-color="3"] { background: linear-gradient(135deg, #5EEAD4, #14B8A6); }
.msg-avatar[data-color="4"] { background: linear-gradient(135deg, #FBBF24, #F59E0B); }
.msg-avatar[data-color="5"] { background: linear-gradient(135deg, #6BCEFA, #3B82F6); }
.msg-avatar[data-color="6"] { background: linear-gradient(135deg, #FB7185, #E11D48); }
.msg-avatar[data-color="7"] { background: linear-gradient(135deg, #93C5FD, #60A5FA); }
.msg-avatar[data-color="8"] { background: linear-gradient(135deg, #C4B5FD, #8B5CF6); }

/* 自家客服头像 — ChatGPT/OpenAI 经典深绿 */
.msg-avatar-self {
  background: #10A37F;
  color: #fff;
}

.msg-avatar-self svg {
  width: 22px;
  height: 22px;
}

.msg-body {
  max-width: calc(100% - 56px);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.msg-left  .msg-body { align-items: flex-start; }
.msg-right .msg-body { align-items: flex-end; }

.msg-name {
  font-size: 0.7rem;
  color: #888;
  padding: 0 2px;
}

/* 气泡 */
.msg-bubble {
  position: relative;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  line-height: 1.55;
  word-break: break-word;
  max-width: 100%;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

/* 客户消息 — 白色气泡，左侧三角 */
.msg-left .msg-bubble {
  background: #FFFFFF;
  color: var(--ink-1);
  border-top-left-radius: 4px;
}

.msg-left .msg-bubble::before {
  content: "";
  position: absolute;
  top: 10px;
  left: -6px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 6px 6px 6px 0;
  border-color: transparent #FFFFFF transparent transparent;
}

/* 我方回复 — 微信经典浅绿色气泡 */
.msg-right .msg-bubble {
  background: #95EC69;
  color: var(--ink-1);
  border-top-right-radius: 4px;
}

.msg-right .msg-bubble::after {
  content: "";
  position: absolute;
  top: 10px;
  right: -6px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 6px 0 6px 6px;
  border-color: transparent transparent transparent #95EC69;
}

/* 底部输入栏（装饰） */
.wechat-input {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #F7F7F7;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
}

.wechat-input-icon {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-3);
  background: #fff;
  border-radius: 6px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  font-size: 1.1rem;
  user-select: none;
}

.wechat-input-box {
  flex: 1;
  padding: 7px 12px;
  background: #fff;
  border-radius: 6px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  font-size: 0.85rem;
  color: var(--ink-4);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 减弱动画偏好下，禁用滚动 */
@media (prefers-reduced-motion: reduce) {
  .wechat-track { transform: none !important; }
}

/* 移动端 */
@media (max-width: 720px) {
  .section-wechat { padding: 64px 0; }
  .wechat { max-width: 100%; border-radius: 22px; }
  .wechat-scroll { height: 480px; }
  .msg-bubble { font-size: 0.88rem; padding: 9px 12px; }
  .wechat-bar-title { font-size: 0.88rem; }
  .msg-avatar { width: 34px; height: 34px; font-size: 0.92rem; }
}

/* ---------- 16. Reveal animations ---------- */
.reveal-init {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 700ms ease-out, transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* 网卡逐张入场 */
.cards-grid .plan-card.reveal-init,
.timeline .step.reveal-init,
.features .feature.reveal-init {
  transition-delay: var(--reveal-delay, 0ms);
}

@media (prefers-reduced-motion: reduce) {
  .reveal-init {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 17. Responsive ---------- */
@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-aside { max-width: 480px; }

  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 880px) {
  .section { padding: 72px 0; }
  .section-cta { padding: 72px 0 96px; }

  .hero { padding: 56px 0 72px; }

  .features { grid-template-columns: 1fr; }

  .timeline { grid-template-columns: 1fr; }
  /* 单列布局下隐藏步骤之间的右侧箭头 */
  .step:not(:last-child)::after { display: none; }

  .cta-panel {
    grid-template-columns: 1fr;
    padding: 40px 32px;
    gap: 32px;
    text-align: center;
  }
  .cta-sub { margin-left: auto; margin-right: auto; }
  .cta-copy .actions { justify-content: center; }
  .cta-copy .section-num { margin-left: auto; margin-right: auto; }
  .cta-qr { margin: 0 auto; }
}

@media (max-width: 720px) {
  .shell { width: calc(100% - 32px); }

  .nav > a:not(.btn) { display: none; }
  .nav-indicator { display: none; }

  .topnote-label { display: none; }
  .topnote p { font-size: 0.78rem; }

  .cards-grid { grid-template-columns: 1fr; gap: 14px; }

  .actions { width: 100%; }
  .actions .btn { flex: 1; min-width: 0; }
}

@media (max-width: 480px) {
  .section { padding: 56px 0; }
  .section-head { margin-bottom: 36px; }
  .cta-panel { padding: 32px 22px; }
  .stat-card { padding: 22px; }

  .actions { flex-direction: column; }
  .actions .btn { width: 100%; }

  .feature { padding: 22px; flex-direction: column; gap: 14px; }

  .footer-row { flex-direction: column; align-items: flex-start; gap: 14px; }
}

/* ---------- 18. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- 19. Print ---------- */
@media print {
  body { background: #fff; color: #000; }
  .topbar, .topnote, .bg-deco, .cta-qr, .fab-contact { display: none; }
}

/* ---------- 20. 移动端右下角悬浮咨询客服按钮 ---------- */
.fab-contact {
  display: none; /* 默认隐藏，桌面端不需要 */
  position: fixed;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  z-index: 60;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-600) 0%, #6366F1 100%);
  color: #fff;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 12px 28px -6px rgba(59, 130, 246, 0.45),
    0 6px 14px -2px rgba(15, 23, 42, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.20);
  transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 220ms ease;
}

.fab-contact:active {
  transform: scale(0.94);
}

.fab-contact svg {
  width: 22px;
  height: 22px;
}

/* 右上角小绿点 — 显示"在线"状态 */
.fab-contact-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #10B981;
  border: 2px solid #fff;
  animation: pulseLive 1.6s ease-in-out infinite;
}

/* 移动端展示 — 已替换为底部固定操作栏 mobile-bar，此规则保留以防 HTML 中残留 */
@media (max-width: 720px) {
  .fab-contact { display: none; }
}


/* ==========================================================================
   21. SCENARIOS — 「适合谁使用」场景卡片
   保持与原 features 模块同一视觉系列：白底卡 + 柔和阴影 + hover 上浮
   ========================================================================== */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.scenario-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line-1);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 220ms ease,
              border-color 220ms ease;
}

.scenario-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-2);
}

.scenario-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue-50) 0%, #EEF2FF 100%);
  font-size: 22px;
  line-height: 1;
  margin-bottom: 14px;
}

.scenario-title {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink-1);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.scenario-text {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--ink-3);
  margin-bottom: 14px;
}

.scenario-rec {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--blue-50);
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--blue-700);
}

.scenario-rec a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: inherit;
  text-decoration: none;
}

.scenario-rec-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--blue-500);
  text-transform: uppercase;
}

.scenario-card-ghost {
  background: linear-gradient(135deg, rgba(201, 184, 255, 0.18), rgba(168, 200, 255, 0.18));
  border-style: dashed;
  border-color: var(--line-2);
}

@media (max-width: 960px) {
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .scenarios-grid { grid-template-columns: 1fr; gap: 12px; }
  .scenario-card { padding: 20px; }
}


/* ==========================================================================
   22. CTA 区客服场景示例列表
   ========================================================================== */
.cta-list {
  margin: 8px 0 22px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cta-list li {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line-1);
  border-radius: 10px;
  font-size: 0.92rem;
  color: var(--ink-2);
  line-height: 1.55;
}

.cta-qr .qr-cap small {
  display: block;
  margin-top: 4px;
  font-size: 0.78rem;
  color: var(--ink-4);
}


/* ==========================================================================
   23. 移动端底部固定操作栏
   替代原 fab-contact 圆形按钮，提供 3 个明确入口
   ========================================================================== */
.mobile-bar {
  display: none; /* 桌面端隐藏，移动端通过断点显示 */
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom, 0px));
  background: rgba(255, 255, 255, 0.94);
  border-top: 1px solid var(--line-2);
  box-shadow: 0 -4px 20px -4px rgba(15, 23, 42, 0.08);
  gap: 8px;
  align-items: center;
  /* 兜底：不支持 backdrop-filter 也可正常显示 */
}

@supports (backdrop-filter: blur(12px)) or (-webkit-backdrop-filter: blur(12px)) {
  .mobile-bar {
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
  }
}

.mobile-bar-item {
  flex: 1;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  height: 48px;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--ink-2);
  text-decoration: none;
  border-radius: 12px;
  transition: background 180ms ease, color 180ms ease;
  -webkit-tap-highlight-color: transparent;
}

.mobile-bar-item svg {
  width: 20px;
  height: 20px;
}

.mobile-bar-item:active {
  background: var(--bg-tint);
  color: var(--ink-1);
}

.mobile-bar-cta {
  flex: 1.4;
  background: linear-gradient(135deg, var(--blue-500) 0%, #6366F1 100%);
  color: #fff !important;
  font-size: 0.95rem;
  font-weight: 700;
  height: 48px;
  box-shadow: 0 4px 12px -2px rgba(59, 130, 246, 0.4);
}

.mobile-bar-cta:active {
  background: linear-gradient(135deg, var(--blue-600) 0%, #5B5BD6 100%);
}

@media (max-width: 720px) {
  .mobile-bar { display: flex; }
  /* 给 mobile-bar 留出底部空间，避免遮挡正文 */
  body { padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px)); }
}


/* ==========================================================================
   25. 套餐区通用提示徽章 — 让 "独享成品号 + 直充" 信息独立突出
   ========================================================================== */
.plans-tip {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 auto 28px;
  max-width: 760px;
  padding: 14px 20px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
  border: 1px solid rgba(99, 102, 241, 0.18);
  border-radius: 14px;
  font-size: 0.95rem;
  color: var(--ink-2);
}

.plans-tip-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: linear-gradient(135deg, #3B82F6 0%, #6366F1 60%, #8B5CF6 100%);
  color: #fff;
  box-shadow: 0 4px 10px -2px rgba(99, 102, 241, 0.45);
}

.plans-tip-icon svg {
  width: 16px !important;
  height: 16px !important;
  max-width: 16px;
  max-height: 16px;
  flex-shrink: 0;
}

.plans-tip-text {
  flex: 1;
  min-width: 0;
  line-height: 1.55;
}

.plans-tip-text strong {
  font-weight: 700;
  background: linear-gradient(90deg, #3B82F6 0%, #8B5CF6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin: 0 2px;
  padding: 0 1px;
}

.plans-tip-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 6px 14px;
  background: #fff;
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--blue-700);
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.plans-tip-link:hover {
  background: var(--blue-50);
  border-color: var(--blue-500);
  transform: translateX(2px);
}

@media (max-width: 640px) {
  .plans-tip {
    padding: 12px 16px;
    font-size: 0.88rem;
    gap: 10px;
  }
  .plans-tip-link {
    width: 100%;
    justify-content: center;
  }
}


/* ==========================================================================
   26. 套餐横向对比表 — 移动端可横向滚动，桌面端完整展示
   ========================================================================== */
.compare-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line-1);
  border-radius: 18px;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
  font-size: 0.92rem;
}

.compare-table thead th {
  text-align: left;
  padding: 16px 18px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink-3);
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.06), rgba(99, 102, 241, 0.02));
  border-bottom: 1px solid var(--line-2);
  white-space: nowrap;
}

.compare-table tbody th {
  text-align: left;
  padding: 16px 18px;
  font-weight: 700;
  color: var(--ink-1);
  white-space: nowrap;
}

.compare-table tbody td {
  padding: 16px 18px;
  color: var(--ink-2);
  vertical-align: middle;
}

.compare-table tbody tr {
  border-bottom: 1px solid var(--line-1);
  transition: background 160ms ease;
}

.compare-table tbody tr:last-child { border-bottom: 0; }

.compare-table tbody tr:hover {
  background: rgba(99, 102, 241, 0.035);
}

.compare-table td strong {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--ink-1);
}

.compare-table td small {
  font-size: 0.78rem;
  color: var(--ink-4);
  margin-left: 2px;
}

.compare-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}
.compare-dot[data-brand="chatgpt"] { background: #10A37F; }
.compare-dot[data-brand="claude"]  { background: #D97757; }
.compare-dot[data-brand="gemini"]  { background: #4285F4; }
.compare-dot[data-brand="grok"]    { background: #475569; }
.compare-dot[data-brand="kiro"]    { background: #F59E0B; }
.compare-dot[data-brand="cursor"]  { background: #6366F1; }

.compare-cta-col { text-align: center; }

.compare-buy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 18px;
  border-radius: 999px;
  background: linear-gradient(180deg, #3D8AF7 0%, var(--blue-600) 100%);
  background-clip: padding-box;
  -webkit-background-clip: padding-box;
  color: #fff;
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 3px 8px -1px rgba(59, 130, 246, 0.35);
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.compare-buy:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px -2px rgba(59, 130, 246, 0.45);
}

.compare-hint {
  display: none;
  text-align: center;
  font-size: 0.8rem;
  color: var(--ink-4);
  margin-top: 12px;
}

@media (max-width: 720px) {
  .compare-hint { display: block; }
}


/* ==========================================================================
   27. 售后承诺信任区
   ========================================================================== */
.section-guarantee {
  padding-top: 0;
}

.guarantee-panel {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.06) 0%, rgba(139, 92, 246, 0.06) 100%);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 24px;
  padding: 40px;
}

.guarantee-head {
  text-align: center;
  margin-bottom: 32px;
}

.guarantee-title {
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink-1);
  margin-bottom: 8px;
}

.guarantee-sub {
  font-size: 0.95rem;
  color: var(--ink-3);
}

.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.guarantee-item {
  text-align: center;
  padding: 0 8px;
}

.guarantee-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: #fff;
  color: var(--blue-600);
  box-shadow: 0 6px 16px -4px rgba(99, 102, 241, 0.25);
  margin-bottom: 14px;
}

.guarantee-item-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-1);
  margin-bottom: 6px;
}

.guarantee-item-text {
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--ink-3);
}

.guarantee-pay {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px dashed var(--line-2);
}

.guarantee-pay-label {
  font-size: 0.86rem;
  color: var(--ink-3);
  margin-right: 4px;
}

.pay-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink-2);
}
.pay-alipay { color: #1677FF; }
.pay-wechat { color: #07C160; }

@media (max-width: 900px) {
  .guarantee-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
@media (max-width: 640px) {
  .guarantee-panel { padding: 28px 20px; }
  .guarantee-grid { gap: 20px; }
  .guarantee-pay { gap: 8px; }
}