/* ========================================
   新疆久息网络科技有限公司 - 样式表
   ======================================== */

/* ----- 全局变量 ----- */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-bg-card: #ffffff;
  --color-bg-card-hover: #f8fafc;
  --color-primary: #2563eb;
  --color-primary-light: #3b82f6;
  --color-primary-dark: #1d4ed8;
  --color-accent: #b8860b;
  --color-accent-light: #d4a017;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-text-dim: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.08);
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

ul {
  list-style: none;
}

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

/* ----- 区块通用样式 ----- */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.section-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(to right, var(--color-primary), var(--color-accent));
  margin: 0 auto;
  border-radius: 2px;
}

.section-desc {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-top: 16px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ----- 导航栏 ----- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1001;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-text {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* 汉堡菜单 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ----- 英雄区 ----- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #f0f4ff 0%, #ffffff 60%, #f5f7fa 100%);
  padding: 120px 0 80px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(37,99,235,0.07), transparent),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(184,134,11,0.05), transparent);
  pointer-events: none;
}

.hero-bg-shapes {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.05;
}

.shape-1 {
  width: 500px;
  height: 500px;
  background: var(--color-primary);
  top: -150px;
  right: -100px;
}

.shape-2 {
  width: 300px;
  height: 300px;
  background: var(--color-accent);
  bottom: 10%;
  left: -80px;
}

.shape-3 {
  width: 200px;
  height: 200px;
  background: var(--color-primary-light);
  top: 50%;
  left: 10%;
}

.shape-4 {
  width: 400px;
  height: 400px;
  background: var(--color-primary-dark);
  top: 20%;
  right: 20%;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
}

.shape-5 {
  width: 150px;
  height: 150px;
  background: var(--color-accent-light);
  bottom: 20%;
  right: 10%;
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
}

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

.hero .container {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  font-size: 0.9rem;
  letter-spacing: 6px;
  color: var(--color-accent);
  margin-bottom: 24px;
  padding: 8px 20px;
  border: 1px solid var(--color-accent);
  border-radius: 100px;
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.2s forwards;
}

.hero-highlight {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.6s forwards;
}

/* 按钮 */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 100px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(37,99,235,0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(37,99,235,0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border-hover);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(201,169,110,0.05);
}

.btn-block {
  width: 100%;
}

/* 滚动指示器 */
.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 1s forwards;
}

.hero-scroll-indicator span {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  letter-spacing: 2px;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--color-text-dim);
  border-radius: 12px;
  position: relative;
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollWheel 1.5s ease-in-out infinite;
}

/* ----- 关于我们 ----- */
.about {
  background: var(--color-bg-alt);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-lead {
  font-size: 1.2rem;
  color: var(--color-text);
  margin-bottom: 20px;
  line-height: 1.8;
}

.about-lead strong {
  color: var(--color-accent);
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-size: 0.98rem;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

.stat-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ----- 服务项目 ----- */
.services {
  background: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(to right, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.service-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 60px;
  height: 60px;
  color: var(--color-primary-light);
  margin-bottom: 24px;
}

.service-icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.service-card > p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.7;
}

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

.service-features li {
  position: relative;
  padding-left: 22px;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ----- 优势 ----- */
.advantages {
  background: var(--color-bg-alt);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  transition: all var(--transition);
}

.advantage-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.advantage-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  color: var(--color-accent);
  background: rgba(201,169,110,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  transition: all var(--transition);
}

.advantage-card:hover .advantage-icon {
  background: rgba(201,169,110,0.15);
  color: var(--color-accent-light);
}

.advantage-icon svg {
  width: 100%;
  height: 100%;
}

.advantage-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.advantage-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ----- 产品展示 ----- */
.products {
  background: var(--color-bg);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.product-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.product-image {
  width: 100%;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #eef2ff, #f8fafc);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.product-placeholder {
  width: 80px;
  height: 80px;
  color: var(--color-text-dim);
  transition: all var(--transition);
}

.product-card:hover .product-placeholder {
  color: var(--color-accent);
  transform: scale(1.1);
}

.product-info {
  padding: 24px;
}

.product-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-accent);
  padding: 4px 12px;
  border: 1px solid var(--color-accent);
  border-radius: 100px;
  margin-bottom: 10px;
}

.product-info h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.product-info p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ----- 联系我们 ----- */
.contact {
  background: var(--color-bg-alt);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 32px;
  color: var(--color-text);
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: var(--color-bg-card);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  border: 1px solid var(--color-border);
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

.contact-label {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-bottom: 4px;
}

.contact-item p:not(.contact-label) {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(41,121,255,0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-dim);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11l-6-6h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}

.form-group select option {
  background: #fff;
  color: var(--color-text);
}

.form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-top: 12px;
}

/* ----- 页脚 ----- */
.footer {
  background: #1e293b;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: #cbd5e1;
  font-size: 0.9rem;
  margin-top: 16px;
  line-height: 1.8;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #cbd5e1;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-accent-light);
}

.footer-contact p {
  color: #cbd5e1;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  color: #94a3b8;
  font-size: 0.85rem;
}

/* 深色页脚中的 logo 文字 */
.footer .logo-text {
  color: #ffffff;
}

/* ----- 动画 ----- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollWheel {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   响应式设计
   ======================================== */

/* 平板 */
@media (max-width: 992px) {
  .section-title {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

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

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

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

/* 手机 */
@media (max-width: 640px) {
  .section {
    padding: 72px 0;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-badge {
    font-size: 0.75rem;
    letter-spacing: 3px;
  }

  /* 移动端导航 */
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 36px;
    transition: right var(--transition);
    border-left: 1px solid var(--color-border);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 1.15rem;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
  }

  .menu-overlay.active {
    display: block;
  }

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

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}