/* ====================================================================
   一云梯 - 全站核心样式表
   设计说明 01：雨夜便利店 (Night Convenience Store & Neon Ticket)
   世界观：雨夜便利店（霓虹招牌、货架分区、收银小票、雨滴玻璃）
   画风：霓虹线框（深底 + 发光描边线条）
   版式原型：票根 / 收银小票（齿孔分隔、编号、检票戳）
   色相：夜景 + 主色相 320° 品红紫 (#FF4D9E)
   ==================================================================== */

:root {
  --bg-deep: #0D0A12;
  --line-neon: #FF4D9E;     /* 主霓虹线 */
  --line-dim: #4A2A3E;      /* 暗部线框 */
  --accent-warm: #FFB347;   /* 唯一 CTA 暖光 / 霓虹暖橙 */
  --text-main: #F5E6F0;     /* 正文米粉白 */
  --text-muted: #A88A9C;    /* 次要文本灰紫 */
  --card-bg: #16101C;       /* 卡片背景 */
  --card-bg-hover: #1E1527;

  /* 辅助与阴影 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --shadow-neon: 0 0 15px rgba(255, 77, 158, 0.4), inset 0 0 10px rgba(255, 77, 158, 0.15);
  --shadow-warm: 0 0 20px rgba(255, 179, 71, 0.5);
  --shadow-ticket: 0 8px 30px rgba(0, 0, 0, 0.65);
  --header-height: 72px;
  --max-w: 1200px;
  --max-w-narrow: 840px;
  --transition-fast: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.68;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  background-color: var(--bg-deep);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(255, 77, 158, 0.12) 0%, transparent 60%),
    linear-gradient(180deg, rgba(13, 10, 18, 0.95) 0%, #0D0A12 100%);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

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

/* 容器 */
.nn-container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.nn-container--narrow {
  max-width: var(--max-w-narrow);
}

/* 字体层级规范 (规范 4) */
h1, .nn-title-h1 {
  font-size: clamp(2.2rem, 5vw, 52px);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.25;
  color: var(--text-main);
}

h2, .nn-title-h2 {
  font-size: clamp(1.6rem, 3.5vw, 30px);
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.35;
  color: var(--text-main);
}

p, .nn-body-text {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
}

.nn-code-mono, .nn-ticket-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* 票根原型：齿孔与收银条码 (版式原型) */
.nn-ticket {
  background-color: var(--card-bg);
  border: 1px solid var(--line-dim);
  border-radius: 8px;
  position: relative;
  box-shadow: var(--shadow-ticket);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.nn-ticket::before,
.nn-ticket::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  background-color: var(--bg-deep);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  border: 1px solid var(--line-dim);
}

.nn-ticket::before {
  left: -9px;
  clip-path: polygon(50% 0, 100% 0, 100% 100%, 50% 100%);
}

.nn-ticket::after {
  right: -9px;
  clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
}

.nn-ticket:hover {
  border-color: var(--line-neon);
  box-shadow: 0 0 20px rgba(255, 77, 158, 0.25);
}

.nn-ticket-divider {
  height: 1px;
  border-top: 2px dashed var(--line-dim);
  margin: 1.25rem 0;
  position: relative;
}

.nn-barcode {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 24px;
  opacity: 0.75;
}

.nn-barcode span {
  display: block;
  height: 100%;
  background-color: var(--line-neon);
}

/* 按钮与招牌动效：盖章 / 检票打孔反馈 (规范 5) */
.nn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-size: 16px;
  font-weight: 700;
  border-radius: 4px;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.2s;
  white-space: nowrap;
  letter-spacing: 0.04em;
  position: relative;
  overflow: hidden;
}

.nn-btn:active {
  transform: scale(0.97);
}

/* 唯一 CTA 暖光色 (规范 3) */
.nn-btn--primary {
  background-color: var(--accent-warm);
  color: #1a0d00;
  border: 1px solid #ffd899;
  box-shadow: var(--shadow-warm);
}

.nn-btn--primary:hover {
  background-color: #ffc46b;
  box-shadow: 0 0 28px rgba(255, 179, 71, 0.75);
  transform: translateY(-2px);
}

.nn-btn--outline {
  background-color: rgba(22, 16, 28, 0.8);
  color: var(--line-neon);
  border: 1px solid var(--line-neon);
  box-shadow: 0 0 10px rgba(255, 77, 158, 0.2);
}

.nn-btn--outline:hover {
  background-color: rgba(255, 77, 158, 0.12);
  box-shadow: var(--shadow-neon);
  color: #ffffff;
}

.nn-btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: 14px;
}

.nn-btn--lg {
  padding: 1rem 2.5rem;
  font-size: 18px;
}

.nn-btn--block {
  width: 100%;
}

/* 检票打孔反馈印章标记 */
.nn-punch-stamp {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%) rotate(-12deg);
  border: 2px solid #842029;
  color: #842029;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 900;
  padding: 2px 6px;
  border-radius: 3px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}

.nn-btn.is-punched .nn-punch-stamp {
  opacity: 1;
  animation: punchStamp 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes punchStamp {
  0% { transform: translateY(-50%) scale(2.2) rotate(-25deg); opacity: 0; }
  60% { transform: translateY(-50%) scale(0.9) rotate(-10deg); opacity: 1; }
  100% { transform: translateY(-50%) scale(1) rotate(-12deg); opacity: 1; }
}

/* 辅助 1：雨夜玻璃雨滴滑落效果 (规范 5) */
.nn-rain-glass {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.nn-rain-drop {
  position: absolute;
  top: -60px;
  width: 1.5px;
  height: 45px;
  background: linear-gradient(180deg, transparent, rgba(255, 77, 158, 0.4), rgba(255, 255, 255, 0.8));
  opacity: 0.6;
  animation: rainFall 2.8s linear infinite;
}

@keyframes rainFall {
  0% { transform: translateY(-60px) scaleY(1); opacity: 0; }
  20% { opacity: 0.7; }
  85% { opacity: 0.7; }
  100% { transform: translateY(110vh) scaleY(1.3); opacity: 0; }
}

/* 辅助 2：霓虹招牌轻微闪烁 (规范 5，仅在 Hero 与 Logo) */
@keyframes neonFlicker {
  0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
    opacity: 1;
    filter: drop-shadow(0 0 10px var(--line-neon));
  }
  20%, 24%, 55% {
    opacity: 0.65;
    filter: none;
  }
}

.nn-neon-sign {
  animation: neonFlicker 6s infinite;
}

/* Header 导航：便利店顶部霓虹店招 (隐喻映射) */
.nn-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(13, 10, 18, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line-dim);
  display: flex;
  align-items: center;
}

.nn-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nn-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-main);
}

.nn-logo svg {
  width: 36px;
  height: 36px;
}

.nn-logo__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--line-neon);
  background: rgba(255, 77, 158, 0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  border: 1px solid var(--line-neon);
}

.nn-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nn-nav__link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.35rem 0;
}

.nn-nav__link:hover,
.nn-nav__link.is-active {
  color: var(--line-neon);
  text-shadow: 0 0 8px rgba(255, 77, 158, 0.6);
}

.nn-menu-toggle {
  display: none;
  color: var(--text-main);
  padding: 0.4rem;
  border: 1px solid var(--line-dim);
  border-radius: 4px;
}

.nn-mobile-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background: rgba(22, 16, 28, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line-neon);
  padding: 1.5rem;
  z-index: 99;
}

.nn-mobile-drawer.is-open {
  display: block;
}

.nn-mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.nn-mobile-nav a {
  font-size: 16px;
  color: var(--text-main);
  padding: 0.5rem 0;
}

/* Hero 首屏：雨夜玻璃门视角与今日推荐 (隐喻映射) */
.nn-hero {
  padding: 5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}

.nn-hero__inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.nn-hero-ticket {
  background-color: var(--card-bg);
  border: 1px solid var(--line-dim);
  border-top: 3px solid var(--line-neon);
  border-radius: 8px;
  padding: 3rem 2.5rem 2.5rem;
  margin-bottom: 2.5rem;
  position: relative;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.7);
}

.nn-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--line-neon);
  background: rgba(255, 77, 158, 0.08);
  border: 1px solid var(--line-neon);
  border-radius: 3px;
  padding: 0.35rem 0.95rem;
  margin-bottom: 1.5rem;
}

.nn-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--line-neon);
  box-shadow: 0 0 10px var(--line-neon);
}

.nn-hero__headline {
  margin-bottom: 1.25rem;
}

.nn-hero__headline span {
  color: var(--line-neon);
  text-shadow: 0 0 15px rgba(255, 77, 158, 0.5);
}

.nn-hero__subheadline {
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 2.2rem;
}

.nn-hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.nn-hero__illustration {
  margin: 2rem auto 0;
  max-width: 320px;
  opacity: 0.92;
}

/* 信任栏小票元信息 */
.nn-hero__trust {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px dashed var(--line-dim);
  text-align: left;
}

.nn-trust-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.nn-trust-icon {
  width: 36px;
  height: 36px;
  border: 1px solid var(--line-neon);
  color: var(--line-neon);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 3px;
}

.nn-trust-item h4 {
  font-size: 15px;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.nn-trust-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.45;
}

/* 区块与货架商品分区 (隐喻映射) */
.nn-section {
  padding: 5rem 0;
  border-top: 1px solid var(--line-dim);
  position: relative;
}

.nn-section--alt {
  background-color: rgba(22, 16, 28, 0.5);
}

.nn-section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}

.nn-section-head h2 {
  margin-bottom: 0.85rem;
}

.nn-section-head p {
  color: var(--text-muted);
}

/* 货架商品卡片 */
.nn-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.nn-shelf-card {
  background-color: var(--card-bg);
  border: 1px solid var(--line-dim);
  border-radius: 6px;
  padding: 2.2rem 1.8rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.nn-shelf-card:hover {
  border-color: var(--line-neon);
  transform: translateY(-4px);
  box-shadow: 0 0 20px rgba(255, 77, 158, 0.2);
}

.nn-shelf-tag {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-warm);
  border: 1px solid var(--accent-warm);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  margin-bottom: 1.25rem;
}

.nn-shelf-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 0.85rem;
  color: var(--text-main);
}

.nn-shelf-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.nn-shelf-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 14px;
  border-top: 1px dashed var(--line-dim);
  padding-top: 1.25rem;
}

.nn-shelf-list li {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.nn-shelf-list svg {
  color: var(--line-neon);
  flex-shrink: 0;
}

/* 货架特性 4 列 */
.nn-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.nn-feature-lane {
  background: var(--card-bg);
  border: 1px solid var(--line-dim);
  border-radius: 4px;
  padding: 1.75rem 1.4rem;
  transition: border-color var(--transition-fast);
}

.nn-feature-lane:hover {
  border-color: var(--line-neon);
}

.nn-feature-icon {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-dim);
  color: var(--line-neon);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  border-radius: 3px;
}

.nn-feature-lane h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.nn-feature-lane p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* 使用场景：不同时段收银小票 (隐喻映射) */
.nn-receipt-card {
  background: var(--card-bg);
  border: 1px solid var(--line-dim);
  border-radius: 6px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.nn-receipt-card:hover {
  border-color: var(--line-neon);
  transform: translateY(-3px);
}

.nn-receipt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px dashed var(--line-dim);
  padding-bottom: 0.85rem;
  margin-bottom: 1.25rem;
}

.nn-receipt-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.nn-receipt-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* 定价：三种小票档位（单点 / 套餐 / 会员）(隐喻映射) */
.nn-pricing-ticket {
  background-color: var(--card-bg);
  border: 1px solid var(--line-dim);
  border-radius: 8px;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.nn-pricing-ticket--popular {
  border: 1px solid var(--line-neon);
  box-shadow: 0 0 25px rgba(255, 77, 158, 0.35);
  background: linear-gradient(180deg, rgba(255, 77, 158, 0.06) 0%, var(--card-bg) 100%);
}

.nn-pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--line-neon);
  color: #0D0A12;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  padding: 0.2rem 0.85rem;
  border-radius: 2px;
  letter-spacing: 0.05em;
}

.nn-pricing-header {
  margin-bottom: 1.75rem;
  border-bottom: 1px dashed var(--line-dim);
  padding-bottom: 1.5rem;
}

.nn-pricing-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.nn-pricing-tagline {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.nn-pricing-notice {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-warm);
  background: rgba(255, 179, 71, 0.1);
  padding: 0.5rem 0.85rem;
  border-radius: 3px;
  border: 1px solid rgba(255, 179, 71, 0.3);
  display: inline-block;
}

.nn-pricing-features {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 2rem;
  font-size: 14px;
}

.nn-pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  color: var(--text-main);
}

.nn-pricing-features svg {
  color: var(--line-neon);
  margin-top: 0.2rem;
  flex-shrink: 0;
}

/* FAQ：收银小票备注栏 (隐喻映射) */
.nn-faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.nn-faq-item {
  background-color: var(--card-bg);
  border: 1px solid var(--line-dim);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.nn-faq-item.is-active {
  border-color: var(--line-neon);
}

.nn-faq-trigger {
  width: 100%;
  padding: 1.25rem 1.5rem;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  background: none;
}

.nn-faq-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
  color: var(--line-neon);
  flex-shrink: 0;
}

.nn-faq-item.is-active .nn-faq-icon {
  transform: rotate(180deg);
}

.nn-faq-content {
  display: none;
  padding: 0 1.5rem 1.25rem;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px dashed var(--line-dim);
  padding-top: 1rem;
}

.nn-faq-item.is-active .nn-faq-content {
  display: block;
}

/* Final CTA：收银台结账打孔区 (隐喻映射) */
.nn-final-cta {
  padding: 5rem 0;
  position: relative;
  text-align: center;
}

.nn-final-cta__box {
  background: linear-gradient(135deg, rgba(255, 77, 158, 0.1) 0%, rgba(22, 16, 28, 0.95) 100%);
  border: 1px solid var(--line-neon);
  border-radius: 8px;
  padding: 4rem 2rem;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: 0 0 30px rgba(255, 77, 158, 0.25);
  position: relative;
}

.nn-final-cta__box h2 {
  margin-bottom: 1rem;
  color: var(--text-main);
}

.nn-final-cta__box p {
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 2.2rem;
}

/* Footer：便利店门口公告栏与营业时间戳 (隐喻映射) */
.nn-footer {
  background-color: #09060D;
  border-top: 1px solid var(--line-dim);
  padding: 4rem 0 2rem;
  color: var(--text-muted);
  font-size: 14px;
  margin-top: auto;
}

.nn-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.nn-footer__brand p {
  margin-top: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 360px;
}

.nn-footer__col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.nn-footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.nn-footer__col a:hover {
  color: var(--line-neon);
}

.nn-footer__bottom {
  border-top: 1px dashed var(--line-dim);
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  align-items: center;
  text-align: center;
}

.nn-footer__disclosure {
  font-size: 13px;
  color: var(--accent-warm);
}

.nn-footer__copy {
  font-family: var(--font-mono);
  font-size: 12px;
}

/* 移动端吸底浮动 CTA */
.nn-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(13, 10, 18, 0.96);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line-neon);
  padding: 0.75rem 1rem;
  z-index: 90;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.6);
}

.nn-sticky-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  max-width: 600px;
  margin: 0 auto;
}

.nn-sticky-cta__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
}

.nn-sticky-cta__desc {
  font-size: 12px;
  color: var(--text-muted);
}

/* 文章与合规单页排版 */
.nn-page-header {
  padding: 4rem 0 2.5rem;
  background: linear-gradient(180deg, rgba(22, 16, 28, 0.6) 0%, rgba(13, 10, 18, 0) 100%);
  border-bottom: 1px solid var(--line-dim);
}

.nn-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.nn-page-title {
  color: var(--text-main);
  margin-bottom: 1rem;
}

.nn-page-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
}

.nn-article-content {
  padding: 3rem 0 5rem;
  font-size: 16px;
  line-height: 1.8;
  color: #E2D4DE;
}

.nn-article-content h2 {
  font-size: 26px;
  font-weight: 600;
  color: var(--text-main);
  margin: 2.8rem 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--line-dim);
}

.nn-article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  margin: 2rem 0 0.85rem;
}

.nn-article-content p {
  margin-bottom: 1.4rem;
}

.nn-article-content ul, .nn-article-content ol {
  margin: 1.25rem 0 1.5rem 1.5rem;
}

.nn-article-content ul {
  list-style: disc;
}

.nn-article-content ol {
  list-style: decimal;
}

.nn-article-content li {
  margin-bottom: 0.5rem;
  padding-left: 0.25rem;
}

.nn-article-content a {
  color: var(--line-neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.nn-article-content a:hover {
  color: #ffffff;
}

.nn-article-intro {
  background: var(--card-bg);
  border-left: 3px solid var(--line-neon);
  border-radius: 0 4px 4px 0;
  padding: 1.5rem 1.8rem;
  margin-bottom: 2.5rem;
  color: var(--text-main);
}

.nn-callout {
  background: var(--card-bg);
  border: 1px solid var(--line-neon);
  border-radius: 4px;
  padding: 1.5rem;
  margin: 2rem 0;
}

.nn-callout--coral {
  border-color: var(--accent-warm);
}

.nn-table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: 4px;
  border: 1px solid var(--line-dim);
}

.nn-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 15px;
}

.nn-table th, .nn-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--line-dim);
}

.nn-table th {
  background: #1F1727;
  color: var(--text-main);
  font-weight: 600;
}

.nn-article-cta-box {
  background: linear-gradient(135deg, rgba(255, 77, 158, 0.1) 0%, rgba(22, 16, 28, 0.95) 100%);
  border: 1px solid var(--line-neon);
  border-radius: 6px;
  padding: 2.5rem 2rem;
  margin: 3.5rem 0 2rem;
  text-align: center;
}

.nn-interlinks-box {
  background: var(--card-bg);
  border: 1px solid var(--line-dim);
  border-radius: 4px;
  padding: 1.75rem;
  margin-top: 3rem;
}

.nn-interlinks-box ul {
  list-style: none;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

/* 动效适配：prefers-reduced-motion (规范 5) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .nn-rain-drop {
    display: none !important;
  }
  .nn-neon-sign {
    animation: none !important;
    filter: drop-shadow(0 0 10px var(--line-neon)) !important;
  }
}

/* 响应式断点 */
@media (max-width: 1024px) {
  .nn-grid-3, .nn-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .nn-hero__trust {
    grid-template-columns: 1fr;
  }
  .nn-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nn-nav, .nn-header__cta .nn-btn {
    display: none;
  }
  .nn-menu-toggle {
    display: block;
  }
  .nn-grid-3, .nn-grid-4 {
    grid-template-columns: 1fr;
  }
  .nn-hero {
    padding: 3rem 0 2rem;
  }
  .nn-hero-ticket {
    padding: 2rem 1.25rem;
  }
  .nn-hero__actions {
    flex-direction: column;
    width: 100%;
  }
  .nn-hero__actions .nn-btn {
    width: 100%;
  }
  .nn-footer__grid {
    grid-template-columns: 1fr;
  }
  .nn-sticky-cta {
    display: block;
  }
  body {
    padding-bottom: 70px;
  }
}