/* ==========================================================================
   吹雪云官网 (chuixuecloud.sbs) - 新野兽主义风格核心样式表 (Neo-Brutalism)
   ========================================================================== */

:root {
  --neo-black: #050505;
  --neo-white: #ffffff;
  --neo-cream: #fbf7ee;
  --neo-yellow: #ffea00;
  --neo-green: #00f076;
  --neo-cyan: #00e5ff;
  --neo-pink: #ff3377;
  --neo-purple: #9d4edd;
  --neo-orange: #ff6b1a;
  --neo-blue: #3a86ff;
  
  --neo-border-sm: 2px solid var(--neo-black);
  --neo-border: 3px solid var(--neo-black);
  --neo-border-lg: 4px solid var(--neo-black);
  
  --neo-shadow-sm: 3px 3px 0px var(--neo-black);
  --neo-shadow: 5px 5px 0px var(--neo-black);
  --neo-shadow-lg: 8px 8px 0px var(--neo-black);
  --neo-shadow-hover: 2px 2px 0px var(--neo-black);

  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-main);
  background-color: var(--neo-cream);
  color: var(--neo-black);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  background-image: radial-gradient(#d3cbbe 1.5px, transparent 1.5px);
  background-size: 24px 24px;
}

/* 文本选择颜色 */
::selection {
  background: var(--neo-yellow);
  color: var(--neo-black);
}

/* 链接无下划线基础 */
a {
  color: inherit;
  text-decoration: none;
}

/* 新野兽主义通用容器 */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 新野兽主义按钮 */
.neo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1rem;
  padding: 12px 24px;
  background-color: var(--neo-yellow);
  color: var(--neo-black);
  border: var(--neo-border);
  box-shadow: var(--neo-shadow);
  cursor: pointer;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  user-select: none;
  border-radius: 4px;
}

.neo-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--neo-shadow-lg);
}

.neo-btn:active {
  transform: translate(3px, 3px);
  box-shadow: var(--neo-shadow-hover);
}

.neo-btn-primary {
  background-color: var(--neo-yellow);
}

.neo-btn-accent {
  background-color: var(--neo-green);
}

.neo-btn-cyan {
  background-color: var(--neo-cyan);
}

.neo-btn-pink {
  background-color: var(--neo-pink);
  color: var(--neo-white);
}

.neo-btn-black {
  background-color: var(--neo-black);
  color: var(--neo-white);
}

.neo-btn-white {
  background-color: var(--neo-white);
}

.neo-btn-lg {
  padding: 16px 36px;
  font-size: 1.25rem;
  box-shadow: var(--neo-shadow-lg);
}

/* 新野兽卡片 */
.neo-card {
  background-color: var(--neo-white);
  border: var(--neo-border);
  box-shadow: var(--neo-shadow);
  padding: 24px;
  border-radius: 6px;
  position: relative;
  transition: all 0.2s ease;
}

.neo-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--neo-shadow-lg);
}

/* 标签贴纸 */
.neo-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: 0.85rem;
  font-weight: 800;
  border: var(--neo-border-sm);
  box-shadow: 2px 2px 0px var(--neo-black);
  border-radius: 3px;
  text-transform: uppercase;
}

.neo-badge-yellow { background-color: var(--neo-yellow); }
.neo-badge-green  { background-color: var(--neo-green); }
.neo-badge-cyan   { background-color: var(--neo-cyan); }
.neo-badge-pink   { background-color: var(--neo-pink); color: #fff; }
.neo-badge-purple { background-color: var(--neo-purple); color: #fff; }
.neo-badge-orange { background-color: var(--neo-orange); color: #fff; }

/* 跑马灯公告条 */
.neo-marquee-wrap {
  background-color: var(--neo-yellow);
  border-top: var(--neo-border);
  border-bottom: var(--neo-border);
  overflow: hidden;
  white-space: nowrap;
  padding: 10px 0;
  font-weight: 900;
  font-size: 0.95rem;
  letter-spacing: 1px;
}

.neo-marquee-inner {
  display: inline-block;
  animation: marquee 28s linear infinite;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* 顶部导航栏 */
.neo-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--neo-white);
  border-bottom: var(--neo-border-lg);
  padding: 12px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
}

.nav-logo-icon {
  width: 42px;
  height: 42px;
  background-color: var(--neo-cyan);
  border: var(--neo-border-sm);
  box-shadow: 3px 3px 0px var(--neo-black);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  border-radius: 4px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  font-weight: 800;
  font-size: 1rem;
  padding: 6px 12px;
  border: 2px solid transparent;
  transition: all 0.15s ease;
}

.nav-link:hover {
  background-color: var(--neo-yellow);
  border: var(--neo-border-sm);
  box-shadow: 2px 2px 0px var(--neo-black);
  border-radius: 4px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mobile-menu-btn {
  display: none;
  background: var(--neo-yellow);
  border: var(--neo-border-sm);
  box-shadow: 2px 2px 0 var(--neo-black);
  padding: 8px 12px;
  font-size: 1.25rem;
  cursor: pointer;
  font-weight: 900;
}

/* Hero 头部板块 */
.hero-section {
  padding: 60px 0 80px 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.hero-title {
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1px;
  margin: 18px 0;
}

.hero-title .highlight-yellow {
  background-color: var(--neo-yellow);
  padding: 2px 10px;
  border: var(--neo-border-sm);
  box-shadow: 4px 4px 0px var(--neo-black);
  display: inline-block;
  transform: rotate(-1deg);
}

.hero-title .highlight-cyan {
  background-color: var(--neo-cyan);
  padding: 2px 10px;
  border: var(--neo-border-sm);
  box-shadow: 4px 4px 0px var(--neo-black);
  display: inline-block;
  transform: rotate(1deg);
}

.hero-desc {
  font-size: 1.15rem;
  color: #333;
  margin-bottom: 30px;
  font-weight: 600;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.hero-trust-row {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-weight: 700;
  font-size: 0.95rem;
}

.hero-visual-card {
  background: var(--neo-white);
  border: var(--neo-border-lg);
  box-shadow: var(--neo-shadow-lg);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.hero-visual-header {
  background: var(--neo-black);
  color: var(--neo-white);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.hero-visual-dots {
  display: flex;
  gap: 6px;
}

.hero-visual-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid #000;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.hero-visual-body {
  padding: 24px;
}

.terminal-line {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: 12px;
  display: flex;
  gap: 8px;
}

.terminal-prompt {
  color: #00a854;
  font-weight: bold;
}

/* 浮动点缀装饰 */
.floating-shape {
  position: absolute;
  z-index: -1;
  pointer-events: none;
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  top: 10%;
  right: 5%;
  width: 60px;
  height: 60px;
  background: var(--neo-pink);
  border: var(--neo-border-sm);
  box-shadow: 4px 4px 0 var(--neo-black);
  transform: rotate(15deg);
}

.shape-2 {
  bottom: 12%;
  left: 2%;
  width: 48px;
  height: 48px;
  background: var(--neo-yellow);
  border: var(--neo-border-sm);
  box-shadow: 4px 4px 0 var(--neo-black);
  border-radius: 50%;
  animation-delay: -2s;
}

.shape-3 {
  top: 45%;
  right: 48%;
  font-size: 32px;
  animation-delay: -3.5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-16px) rotate(8deg); }
}

/* 章节通用标题 */
.section-wrap {
  padding: 70px 0;
  position: relative;
}

.section-head {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
}

.section-tag {
  display: inline-block;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}

.section-sub {
  font-size: 1.1rem;
  color: #444;
  font-weight: 600;
}

/* 核心优势板块 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--neo-white);
  border: var(--neo-border);
  box-shadow: var(--neo-shadow);
  padding: 28px 24px;
  border-radius: 6px;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--neo-shadow-lg);
}

.feature-icon-box {
  width: 58px;
  height: 58px;
  border: var(--neo-border-sm);
  box-shadow: 3px 3px 0 var(--neo-black);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
  border-radius: 4px;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 900;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.95rem;
  color: #444;
  line-height: 1.6;
  font-weight: 500;
}

/* 节点延迟与实时状态板块 */
.nodes-board {
  background: var(--neo-white);
  border: var(--neo-border-lg);
  box-shadow: var(--neo-shadow-lg);
  border-radius: 8px;
  padding: 30px;
}

.nodes-board-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: var(--neo-border);
  margin-bottom: 24px;
}

.pulse-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: #00f076;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(0, 240, 118, 0.7);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 240, 118, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 240, 118, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 240, 118, 0); }
}

.nodes-table-wrap {
  overflow-x: auto;
}

.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.nodes-table th {
  background: #f0ede6;
  border: var(--neo-border-sm);
  padding: 12px 16px;
  font-weight: 900;
  font-size: 0.95rem;
}

.nodes-table td {
  border: var(--neo-border-sm);
  padding: 14px 16px;
  font-weight: 700;
}

.ping-val {
  font-family: var(--font-mono);
  font-weight: 800;
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid #000;
}

.ping-fast { background: #d4f8d3; color: #0b7a07; }
.ping-med  { background: #fff3c4; color: #a16207; }

/* 价格套餐板块 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--neo-white);
  border: var(--neo-border-lg);
  box-shadow: var(--neo-shadow);
  border-radius: 8px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all 0.2s ease;
}

.pricing-card.featured {
  background: #fffef2;
  border-color: var(--neo-black);
  transform: scale(1.03);
  box-shadow: var(--neo-shadow-lg);
}

.featured-ribbon {
  position: absolute;
  top: -15px;
  right: 18px;
  background: var(--neo-pink);
  color: #fff;
  font-weight: 900;
  font-size: 0.85rem;
  padding: 4px 14px;
  border: var(--neo-border-sm);
  box-shadow: 2px 2px 0 var(--neo-black);
  border-radius: 3px;
}

.pricing-price {
  font-size: 2.8rem;
  font-weight: 900;
  margin: 16px 0;
  line-height: 1;
}

.pricing-price small {
  font-size: 1rem;
  font-weight: 700;
  color: #666;
}

.pricing-features-list {
  list-style: none;
  margin: 24px 0 32px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing-features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.95rem;
}

.check-icon {
  width: 20px;
  height: 20px;
  background: var(--neo-green);
  border: 2px solid #000;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  border-radius: 2px;
}

/* 用户评价板块 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.review-card {
  background: var(--neo-white);
  border: var(--neo-border);
  box-shadow: var(--neo-shadow);
  padding: 24px;
  border-radius: 6px;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border: var(--neo-border-sm);
  box-shadow: 2px 2px 0 var(--neo-black);
  background: var(--neo-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.2rem;
  border-radius: 50%;
}

.review-meta h4 {
  font-size: 1.05rem;
  font-weight: 900;
}

.review-meta p {
  font-size: 0.85rem;
  color: #666;
  font-weight: 600;
}

.review-stars {
  color: #ff9900;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.review-body {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #333;
  font-weight: 600;
}

/* 常见问题板块 */
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.faq-item {
  background: var(--neo-white);
  border: var(--neo-border);
  box-shadow: var(--neo-shadow);
  border-radius: 6px;
  overflow: hidden;
  transition: all 0.15s ease;
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 900;
  font-size: 1.1rem;
  user-select: none;
  background: var(--neo-white);
}

.faq-question:hover {
  background: #fffbe6;
}

.faq-toggle-icon {
  width: 28px;
  height: 28px;
  border: var(--neo-border-sm);
  box-shadow: 2px 2px 0 var(--neo-black);
  background: var(--neo-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.2rem;
  transition: transform 0.2s ease;
}

.faq-answer {
  padding: 0 24px 20px 24px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: #444;
  font-weight: 600;
  display: none;
  border-top: 1px dashed #ccc;
  padding-top: 16px;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  background: var(--neo-pink);
  color: #fff;
}

/* 知识库板块 */
.kb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 28px;
}

.kb-card {
  background: var(--neo-white);
  border: var(--neo-border);
  box-shadow: var(--neo-shadow);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.kb-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--neo-shadow-lg);
}

.kb-card-head {
  padding: 16px 20px;
  border-bottom: var(--neo-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kb-card-body {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.kb-title {
  font-size: 1.25rem;
  font-weight: 900;
  line-height: 1.4;
  margin-bottom: 12px;
}

.kb-title a:hover {
  text-decoration: underline;
}

.kb-snippet {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
  font-weight: 500;
}

.kb-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px dashed #ddd;
  font-size: 0.85rem;
  font-weight: 700;
  color: #777;
}

/* 页脚 */
.neo-footer {
  background: var(--neo-black);
  color: var(--neo-white);
  border-top: var(--neo-border-lg);
  padding: 70px 0 30px 0;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-col h4 {
  font-size: 1.2rem;
  font-weight: 900;
  margin-bottom: 20px;
  color: var(--neo-yellow);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-weight: 600;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--neo-cyan);
  text-decoration: underline;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid #333;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
  color: #aaa;
}

/* 响应式适配 */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .nav-menu {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--neo-white);
    border-bottom: var(--neo-border-lg);
    padding: 20px;
    box-shadow: 0 10px 0 rgba(0,0,0,0.1);
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .nodes-board {
    padding: 16px;
  }
  .hero-cta-group {
    flex-direction: column;
  }
  .hero-cta-group .neo-btn {
    width: 100%;
  }
}