/* ===== SSAL Cloud - 共享样式表 ===== */
/* 使用系统字体，避免 Google Fonts 在国内的加载问题 */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue-primary: #2563eb;
  --blue-dark:    #1e40af;
  --blue-deeper:  #1e3a8a;
  --green:        #16a34a;
  --purple:       #7c3aed;
  --yellow:       #d97706;
  --gray-50:      #f8fafc;
  --gray-100:     #f1f5f9;
  --gray-200:     #e2e8f0;
  --gray-400:     #94a3b8;
  --gray-500:     #64748b;
  --gray-600:     #475569;
  --gray-700:     #334155;
  --gray-900:     #0f172a;
  --white:        #ffffff;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.08);
  --shadow-md:    0 4px 12px rgba(0,0,0,.10);
  --shadow-lg:    0 10px 30px rgba(0,0,0,.12);
  --shadow-xl:    0 20px 40px rgba(0,0,0,.15);
  --radius-sm:    8px;
  --radius-md:    12px;
  --radius-lg:    16px;
  --radius-xl:    24px;
  --transition:   0.3s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
               "Hiragino Sans GB", "Source Han Sans CN", "Noto Sans CJK SC",
               "WenQuanYi Micro Hei", sans-serif;
  color: var(--gray-700);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }

/* ===== 导航栏 ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,.06);
  height: 64px;
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo img { height: 36px; width: auto; }
.nav-logo-text { font-size: 1.25rem; font-weight: 700; color: var(--blue-primary); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-size: .9375rem; color: var(--gray-600);
  transition: color var(--transition); white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { color: var(--blue-primary); }
.nav-links a.active { font-weight: 600; border-bottom: 2px solid var(--blue-primary); padding-bottom: 2px; }
.nav-phone { font-size: .875rem; color: var(--blue-primary); font-weight: 600; white-space: nowrap; }
.nav-phone-label { font-size: .8125rem; color: var(--gray-500); }

/* 移动端汉堡菜单 */
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--gray-700); border-radius: 2px; transition: var(--transition); }
.nav-mobile { display: none; }

/* ===== 页面通用 ===== */
.page-pt { padding-top: 64px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }
.bg-gray { background: var(--gray-50); }
.bg-white { background: var(--white); }

.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { font-size: 2rem; font-weight: 700; color: var(--gray-900); margin-bottom: 12px; }
.section-header p { font-size: 1.0625rem; color: var(--gray-500); }

/* ===== 渐变英雄区 ===== */
.hero-grad {
  background: linear-gradient(135deg, var(--blue-deeper) 0%, var(--blue-primary) 55%, var(--gray-500) 100%);
  position: relative; overflow: hidden;
}
.hero-grad::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 70% 50%, rgba(255,255,255,.06), transparent);
  pointer-events: none;
}
/* 纯CSS粒子替代p5.js */
.hero-particles { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-particles::before,
.hero-particles::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  opacity: .12;
  animation: float-blob 8s ease-in-out infinite alternate;
}
.hero-particles::before {
  width: 480px; height: 480px;
  background: rgba(255,255,255,.2);
  top: -160px; right: -80px;
  animation-duration: 9s;
}
.hero-particles::after {
  width: 300px; height: 300px;
  background: rgba(255,255,255,.15);
  bottom: -80px; left: 10%;
  animation-duration: 7s; animation-delay: -3s;
}
@keyframes float-blob {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(30px, 20px) scale(1.08); }
}

/* ===== Banner页眉（子页面） ===== */
.page-banner {
  background: linear-gradient(135deg, var(--blue-deeper) 0%, var(--blue-primary) 55%, var(--gray-500) 100%);
  padding: 96px 0 64px;
  text-align: center; color: var(--white);
}
.page-banner h1 { font-size: 2.5rem; font-weight: 700; margin-bottom: 16px; }
.page-banner p { font-size: 1.0625rem; color: rgba(255,255,255,.82); max-width: 600px; margin: 0 auto; }

/* ===== 卡片 ===== */
.card {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 32px; box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }

.card-icon {
  width: 56px; height: 56px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.card-icon svg { width: 28px; height: 28px; }
.icon-blue  { background: #dbeafe; color: var(--blue-primary); }
.icon-green { background: #dcfce7; color: var(--green); }
.icon-purple{ background: #ede9fe; color: var(--purple); }
.icon-yellow{ background: #fef3c7; color: var(--yellow); }

/* ===== Grid 布局辅助 ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 28px; border-radius: var(--radius-sm);
  font-size: .9375rem; font-weight: 600; cursor: pointer;
  border: 2px solid transparent; transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary   { background: var(--blue-primary); color: var(--white); }
.btn-primary:hover { background: var(--blue-dark); }
.btn-outline   { background: transparent; color: var(--white); border-color: var(--white); }
.btn-outline:hover { background: var(--white); color: var(--blue-primary); }
.btn-white { background: var(--white); color: var(--blue-primary); }
.btn-white:hover { background: #f0f6ff; }

/* ===== 统计数字 ===== */
.stat-num { font-size: 2.25rem; font-weight: 700; color: var(--blue-primary); }

/* ===== 进度条（替代 ECharts） ===== */
.skill-bar { margin-bottom: 16px; }
.skill-label { display: flex; justify-content: space-between; margin-bottom: 6px; font-size: .875rem; color: var(--gray-700); }
.skill-track { height: 8px; background: var(--gray-200); border-radius: 4px; overflow: hidden; }
.skill-fill {
  height: 100%; border-radius: 4px;
  background: linear-gradient(90deg, var(--blue-primary), #60a5fa);
  transform: scaleX(0); transform-origin: left;
  transition: transform 1.2s cubic-bezier(.4,0,.2,1);
}
.skill-fill.animated { transform: scaleX(1); }

/* ===== 时间线 ===== */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ''; position: absolute; left: 6px; top: 8px;
  width: 2px; height: calc(100% - 16px); background: var(--gray-200);
}
.tl-item { position: relative; margin-bottom: 40px; }
.tl-item::before {
  content: ''; position: absolute; left: -28px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--blue-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.2);
}
.tl-card { background: var(--white); border-radius: var(--radius-md); padding: 24px; box-shadow: var(--shadow-md); }
.tl-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.tl-year { font-size: .9375rem; font-weight: 600; color: var(--blue-primary); }

/* ===== 轮播（原生JS，替代 Splide） ===== */
.slider-wrap { position: relative; overflow: hidden; }
.slider-track { display: flex; transition: transform .5s ease; }
.slider-slide { flex-shrink: 0; }
.slider-dots { display: flex; justify-content: center; gap: 8px; margin-top: 24px; }
.slider-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--gray-300, #d1d5db); cursor: pointer; transition: background var(--transition);
}
.slider-dot.active { background: var(--blue-primary); }
.slider-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--white); border: none; cursor: pointer;
  box-shadow: var(--shadow-md); z-index: 5;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-600); transition: all var(--transition);
}
.slider-arrow:hover { background: var(--blue-primary); color: var(--white); }
.slider-prev { left: -16px; }
.slider-next { right: -16px; }

/* ===== 浮动客服 ===== */
.float-chat { position: fixed; bottom: 24px; right: 24px; z-index: 200; }
.chat-btn {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--blue-primary); color: var(--white);
  border: none; cursor: pointer; box-shadow: 0 4px 20px rgba(37,99,235,.4);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.chat-btn:hover { background: var(--blue-dark); transform: scale(1.06); }
.chat-box {
  position: absolute; bottom: 64px; right: 0;
  width: 340px; background: var(--white);
  border-radius: var(--radius-md); box-shadow: var(--shadow-xl);
  display: none; flex-direction: column; overflow: hidden;
}
.chat-box.open { display: flex; }
.chat-head {
  background: linear-gradient(135deg, var(--blue-primary), var(--blue-dark));
  color: var(--white); padding: 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.chat-head-info { display: flex; align-items: center; gap: 10px; }
.chat-head-icon {
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
}
.chat-head-name { font-weight: 600; font-size: .9375rem; }
.chat-head-status { font-size: .75rem; opacity: .8; }
.chat-close {
  background: none; border: none; color: rgba(255,255,255,.8);
  cursor: pointer; line-height: 1; font-size: 1.25rem;
  transition: color var(--transition);
}
.chat-close:hover { color: var(--white); }
.chat-msgs { height: 280px; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 82%; padding: 10px 14px; border-radius: 12px; font-size: .875rem; line-height: 1.5; }
.msg-bot { background: var(--gray-100); color: var(--gray-700); align-self: flex-start; }
.msg-user { background: var(--blue-primary); color: var(--white); align-self: flex-end; }
.chat-quick { border-top: 1px solid var(--gray-200); padding: 12px; display: flex; gap: 8px; }
.chat-quick-btn {
  flex: 1; padding: 8px 4px; border: none; border-radius: 8px;
  background: var(--gray-100); color: var(--gray-700);
  font-size: .8125rem; cursor: pointer; transition: background var(--transition);
}
.chat-quick-btn:hover { background: var(--gray-200); }

/* ===== 页脚 ===== */
.footer {
  background: var(--gray-900); color: var(--white);
  padding: 48px 0; text-align: center;
}
.footer-name { font-size: 1.25rem; font-weight: 700; margin-bottom: 8px; }
.footer-en  { color: var(--gray-400); font-size: .875rem; margin-bottom: 16px; }
.footer-icp { color: var(--gray-500); font-size: .8125rem; }

/* ===== 滚动渐入 ===== */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.in { opacity: 1; transform: none; }

/* ===== 手机端 ===== */
@media (max-width: 768px) {
  .nav-links, .nav-phone-label { display: none; }
  .nav-toggle { display: flex; }
  .nav-mobile {
    display: block; position: fixed; top: 64px; left: 0; right: 0;
    background: var(--white); box-shadow: var(--shadow-lg);
    padding: 16px 24px 24px; z-index: 99;
    border-top: 1px solid var(--gray-200);
  }
  .nav-mobile.hidden { display: none; }
  .nav-mobile a {
    display: block; padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700); font-size: 1rem;
  }
  .nav-mobile a.active { color: var(--blue-primary); font-weight: 600; }
  .nav-mobile .nav-phone-m { color: var(--blue-primary); font-weight: 600; margin-top: 12px; display: block; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .section-header { margin-bottom: 36px; }
  .section-header h2 { font-size: 1.625rem; }
  .page-banner h1 { font-size: 1.875rem; }
  .page-banner { padding: 80px 24px 48px; }
  .chat-box { width: 300px; right: -8px; }
}
@media (max-width: 480px) {
  .grid-3.partners { grid-template-columns: 1fr 1fr; }
}