/* =========================================
   TRISTONES AI ROBOTICS LABS LLC
   Main Stylesheet
========================================= */

/* ── Variables ── */
:root {
  --primary:      #0055ff;
  --primary-dark: #0033cc;
  --accent:       #00d4ff;
  --accent2:      #7c3aed;
  --gradient:     linear-gradient(135deg, #0055ff 0%, #00d4ff 100%);
  --gradient2:    linear-gradient(135deg, #7c3aed 0%, #0055ff 60%, #00d4ff 100%);

  --bg-dark:      #050a15;
  --bg-card:      #0a1628;
  --bg-card2:     #0d1f38;
  --border:       rgba(0,85,255,0.18);
  --border-light: rgba(255,255,255,0.07);

  --text-primary:   #f0f6ff;
  --text-secondary: #8da4c8;
  --text-muted:     #4e6a8a;

  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 8px 40px rgba(0,85,255,0.18);
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.5);
  --transition: all 0.28s cubic-bezier(.4,0,.2,1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'Space Grotesk', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ── Utility ── */
.container    { max-width: 1220px; margin: 0 auto; padding: 0 24px; }
.gradient-text {
  background: var(--gradient2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section      { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag  {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 18px;
}
.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 18px;
}
.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0,85,255,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,85,255,0.45); }
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.2);
}
.btn-outline:hover { border-color: var(--primary); color: var(--accent); background: rgba(0,85,255,0.08); }
.btn-lg { padding: 15px 32px; font-size: 1rem; border-radius: 10px; }
.btn-full { width: 100%; justify-content: center; }

/* ── Reveal animation ── */
/* 完全静态显示，不用动画，确保内容永远可见、可点击 */
.reveal, .reveal.animated, .reveal.animated.visible { opacity: 1 !important; transform: none !important; }

/* =========================================
   NAVBAR
========================================= */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  padding: 18px 0;
  transition: var(--transition);
  /* 不能在 navbar 本身加 overflow:hidden，否则下拉菜单会被裁切 */
}
.navbar.scrolled {
  background: rgba(5,10,21,0.92);
  /* backdrop-filter 放到伪元素，避免创建新堆叠上下文裁切下拉菜单 */
  border-bottom: 1px solid var(--border-light);
  padding: 12px 0;
}
.navbar.scrolled::before {
  content: '';
  position: absolute; inset: 0; z-index: -1;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.nav-container {
  max-width: 1220px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; gap: 32px;
  position: relative;
}
.nav-brand {
  display: flex; align-items: center; gap: 12px;
  flex-shrink: 0;
}
.nav-logo-img {
  height: 36px;
  max-height: 36px;
  width: auto;
  max-width: 160px;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 0 4px rgba(0,212,255,0.2));
  transition: filter 0.3s ease;
}
.nav-logo-img:hover {
  filter: drop-shadow(0 0 8px rgba(0,212,255,0.5));
}
.brand-logo {
  width: 38px; height: 38px; border-radius: 9px;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  overflow: hidden;
}
.brand-logo-img {
  background: rgba(255,255,255,0.12) !important;
  padding: 5px;
}
.brand-logo-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: 'Space Grotesk', sans-serif; font-size: 1rem; font-weight: 800; letter-spacing: 0.06em; }
.brand-sub  { font-size: 0.6rem; letter-spacing: 0.12em; color: var(--accent); font-weight: 600; }
.nav-links {
  display: flex; align-items: center; gap: 2px;
  margin-left: auto;
}
.nav-link {
  padding: 6px 11px; border-radius: 6px;
  font-size: 0.82rem; font-weight: 500; color: var(--text-secondary);
  transition: var(--transition); white-space: nowrap;
}
.nav-link:hover, .nav-link.active { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.nav-cta { margin-left: 12px; flex-shrink: 0; }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px; margin-left: auto;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--text-primary); border-radius: 2px; transition: var(--transition);
}

/* =========================================
   DROPDOWN MENU
========================================= */
.nav-dropdown {
  position: relative;
  /* padding-bottom 让 hover 区域往下延伸，覆盖菜单和间距 */
  padding-bottom: 14px;
  margin-bottom: -14px; /* 抵消 padding 对布局的影响 */
}
.nav-has-dropdown { display: flex; align-items: center; gap: 5px; cursor: pointer; }
.nav-arrow {
  font-size: 0.6rem; transition: transform 0.25s ease;
  opacity: 0.6;
}
.nav-dropdown:hover .nav-arrow { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute; top: calc(100% + 10px); left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 280px;
  background: var(--bg-card2);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.65), 0 0 0 1px rgba(255,255,255,0.06);
  padding: 10px 8px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  z-index: 9000;
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1; visibility: visible; pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

/* 透明"桥"：填补父元素与菜单之间的 gap，防止鼠标经过时 hover 断开 */
.dropdown-menu::before {
  content: '';
  position: absolute; bottom: 100%; left: 0; right: 0;
  height: 14px; /* 比 gap(10px) 大一点，保险 */
  background: transparent;
}
/* 小三角箭头 */
.dropdown-menu::after {
  content: '';
  position: absolute; top: -6px; left: 50%; transform: translateX(-50%);
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 6px solid var(--border-light);
}

.dropdown-header {
  font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--text-muted);
  padding: 4px 10px 8px; border-bottom: 1px solid var(--border-light);
  margin-bottom: 4px;
}

.dropdown-item {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 10px; border-radius: 8px;
  transition: background 0.15s ease;
  color: var(--text-secondary);
  cursor: pointer;
  pointer-events: all; /* 确保点击可穿透 */
  text-decoration: none; /* 去掉a标签下划线 */
}
.dropdown-item:hover {
  background: rgba(99,102,241,0.1);
  color: var(--text-primary);
}
.dropdown-item:hover .di-icon { background: rgba(99,102,241,0.2); }
.dropdown-item:hover .di-icon i { opacity: 1; }

.di-icon {
  width: 34px; height: 34px; flex-shrink: 0;
  border-radius: 8px; background: rgba(255,255,255,0.05);
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s ease;
}
.di-icon i {
  font-size: 0.85rem; opacity: 0.7; transition: opacity 0.15s;
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.di-text { display: flex; flex-direction: column; gap: 2px; }
.di-text strong { font-size: 0.8rem; font-weight: 600; color: var(--text-primary); }
.di-text em { font-size: 0.7rem; font-style: normal; color: var(--text-muted); }

.dropdown-footer {
  padding: 8px 10px 4px;
  border-top: 1px solid var(--border-light);
  margin-top: 4px;
}
.dropdown-all {
  font-size: 0.72rem; font-weight: 600;
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  display: inline-block; transition: opacity 0.15s;
}
.dropdown-all:hover { opacity: 0.75; }

/* =========================================
   PRODUCT MODAL (弹窗详情)
========================================= */
.product-modal-overlay {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(0,0,0,0.75); backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s;
}
.product-modal-overlay.open {
  opacity: 1; visibility: visible; pointer-events: all;
}
.product-modal {
  background: var(--bg-card2);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  max-width: 860px; width: 100%;
  max-height: 90vh; overflow-y: auto;
  position: relative;
  transform: scale(0.93) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: 0 40px 120px rgba(0,0,0,0.7);
}
.product-modal-overlay.open .product-modal {
  transform: scale(1) translateY(0);
}
.modal-close {
  position: sticky; top: 16px; left: calc(100% - 52px);
  float: right; margin: 16px 16px 0 0;
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,0.08); border: 1px solid var(--border-light);
  color: var(--text-primary); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; transition: var(--transition); z-index: 10;
}
.modal-close:hover { background: rgba(255,255,255,0.14); }

.modal-inner { padding: 28px 32px 36px; }
.modal-hero {
  width: 100%; height: 260px; border-radius: 12px; overflow: hidden;
  margin-bottom: 24px; position: relative;
}
.modal-hero img { width: 100%; height: 100%; object-fit: cover; }
.modal-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,10,20,0.85) 100%);
}
.modal-hero-badge {
  position: absolute; top: 14px; left: 14px;
  padding: 5px 14px; border-radius: 100px; font-size: 0.7rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: 0.6px;
}
.modal-title-row { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 16px; }
.modal-icon {
  width: 48px; height: 48px; flex-shrink: 0; border-radius: 12px;
  background: rgba(99,102,241,0.12); border: 1px solid rgba(99,102,241,0.22);
  display: flex; align-items: center; justify-content: center; font-size: 1.3rem;
}
.modal-icon i {
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.modal-title-text h3 { font-size: 1.4rem; font-weight: 700; color: var(--text-primary); }
.modal-title-text p { font-size: 0.82rem; color: var(--accent); margin-top: 2px; }
.modal-desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.75; margin-bottom: 20px; }
.modal-spec-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 20px;
}
.modal-spec-item {
  background: rgba(255,255,255,0.03); border: 1px solid var(--border-light);
  border-radius: 10px; padding: 12px; text-align: center;
}
.modal-spec-val { font-size: 1.1rem; font-weight: 700; color: var(--text-primary); font-family: 'Space Grotesk', sans-serif; }
.modal-spec-key { font-size: 0.68rem; color: var(--text-muted); margin-top: 3px; }
.modal-features-title { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 10px; }
.modal-features { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 24px; }
.modal-feat-item {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.82rem; color: var(--text-secondary);
}
.modal-feat-item i { color: var(--primary); margin-top: 2px; flex-shrink: 0; }
.modal-actions { display: flex; gap: 12px; }
.modal-actions .btn { flex: 1; justify-content: center; text-align: center; }

/* product btn row */
.product-btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.product-btn-row .btn { flex: 1; min-width: 120px; justify-content: center; text-align: center; }



/* =========================================
   HERO  (v19 全屏视频版)
========================================= */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  background: var(--bg-dark);
  padding: 120px 0 60px;
}
.hero.hero-fullscreen {
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ---- 视频背景 ---- */
.hero-bg-video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center center;   /* hands-on：机器人手部特写居中 */
  z-index: 0;
  pointer-events: none;
}

/* ---- 遮罩：hands-on 视频本身为深色实验室背景，遮罩轻盈即可 ---- */
.hero-video-overlay {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  /* 左侧加深保证文字可读，往右渐浅透出机器人，右边缘略深收边 */
  background:
    linear-gradient(to right,
      rgba(5,10,21,0.92) 0%,
      rgba(5,10,21,0.72) 35%,
      rgba(5,10,21,0.28) 58%,
      rgba(5,10,21,0.08) 78%,
      rgba(5,10,21,0.22) 100%
    );
}
/* 底部轻渐出，与 stats-bar 衔接自然 */
.hero-video-overlay::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to top,
    rgba(5,10,21,0.82) 0%,
    rgba(5,10,21,0.30) 14%,
    transparent 30%
  );
}
/* 顶部轻遮，防止导航栏下方太亮 */
.hero-video-overlay::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to bottom,
    rgba(5,10,21,0.45) 0%,
    transparent 16%
  );
}

/* ---- Particle canvas ---- */
#particleCanvas {
  position: absolute; inset: 0; pointer-events: none; z-index: 2;
  opacity: 0.5;
}

/* ---- 内容区：单列居中偏左 ---- */
.hero-content-v2 {
  position: relative; z-index: 3;
  width: 100%; max-width: 1280px;
  padding: 0 64px;
  box-sizing: border-box;
  margin: 0 auto;
  flex: 1;
  display: flex;
  align-items: center;
  padding-top: 80px;   /* 导航栏高度补偿 */
}
.hero-inner {
  max-width: 600px;
}

/* ---- 状态徽章 ---- */
.hero-badge-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  margin-bottom: 28px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.04em;
  color: var(--accent);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 6px 14px; border-radius: 100px;
}
.hero-badge-award {
  color: rgba(255,200,80,0.95);
  background: rgba(255,180,50,0.08);
  border-color: rgba(255,180,50,0.25);
}
.hero-badge-award i { font-size: 0.75rem; }



/* ---- 主标题：大字，强冲击 ---- */
.hero-title-v2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(3rem, 6.5vw, 5.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  color: #fff;
}

/* ---- 副标题 ---- */
.hero-desc-v2 {
  color: rgba(255,255,255,0.62);
  font-size: 1.1rem; line-height: 1.75;
  margin-bottom: 32px;
  max-width: 500px;
}
.hero-br { display: block; }
/* 打字机效果 */
.hero-typewriter {
  color: rgba(0,212,255,0.95);
  font-weight: 700;
  min-width: 80px;
  display: inline-block;
}
.hero-cursor {
  display: inline-block;
  color: rgba(0,212,255,0.8);
  font-weight: 300;
  animation: cursor-blink 1s step-end infinite;
  margin-left: 1px;
}
.hero-br-spacer { color: rgba(255,255,255,0.62); }
@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}



/* ---- 技术 chips ---- */
.hero-chips {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 40px;
}
.hero-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.78rem; font-weight: 600;
  color: rgba(0,212,255,0.9);
  background: rgba(0,212,255,0.07);
  border: 1px solid rgba(0,212,255,0.18);
  padding: 6px 14px; border-radius: 100px;
  letter-spacing: 0.02em;
}
.hero-chip i { font-size: 0.72rem; }

/* ---- CTA 按钮 ---- */
.hero-actions-v2 {
  display: flex; gap: 14px; flex-wrap: wrap;
}
/* 主 CTA 脉冲效果 */
.hero-cta-primary {
  position: relative;
}
.hero-cta-primary::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  border: 2px solid rgba(0,85,255,0.5);
  animation: cta-pulse 2.5s cubic-bezier(0.4,0,0.6,1) infinite;
  pointer-events: none;
}
@keyframes cta-pulse {
  0%   { opacity: 0.7; transform: scale(1); }
  60%  { opacity: 0; transform: scale(1.12); }
  100% { opacity: 0; transform: scale(1.12); }
}



/* ---- 底部统计条 ---- */
.hero-stats-bar {
  position: relative; z-index: 3;
  display: flex; align-items: center;
  padding: 20px 64px;
  background: rgba(5,10,21,0.7);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255,255,255,0.07);
  gap: 0;
  width: 100%;
  box-sizing: border-box;
}
.hero-stat {
  flex: 1;
  text-align: center;
  display: flex; flex-direction: column; align-items: center;
}
.hero-stat .stat-num {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem; font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}
.hero-stat .stat-suffix { /* 同行 + 号 */
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem; font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-stat .stat-label {
  font-size: 0.72rem; color: rgba(255,255,255,0.45);
  letter-spacing: 0.06em; text-transform: uppercase;
}
.hero-stat-div {
  width: 1px; height: 44px;
  background: rgba(255,255,255,0.1);
}

/* ---- 兼容旧 class（hero-content, hero-stats, stat-item 等） ---- */
.hero-content {
  position: relative; z-index: 3;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center;
}
.hero-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800; line-height: 1.1;
  margin-bottom: 20px;
}
.hero-desc {
  color: var(--text-secondary);
  font-size: 1.05rem; line-height: 1.8;
  margin-bottom: 36px; max-width: 520px;
}
.hero-actions {
  display: flex; gap: 16px; flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex; align-items: center; gap: 20px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  width: fit-content;
}
.stat-item { text-align: center; }
.stat-num  { display: block; font-family: 'Space Grotesk', sans-serif; font-size: 1.3rem; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label{ display: block; font-size: 0.72rem; color: var(--text-muted); margin-top: 2px; }
.stat-divider { width: 1px; height: 36px; background: var(--border-light); }

/* Robot Showcase */
.hero-right { position: relative; display: flex; justify-content: center; }
.robot-showcase {
  position: relative; width: 420px; height: 420px;
  display: flex; align-items: center; justify-content: center;
}
.robot-glow {
  position: absolute; width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,85,255,0.35) 0%, transparent 70%);
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:.6;transform:translate(-50%,-50%) scale(1)} 50%{opacity:1;transform:translate(-50%,-50%) scale(1.1)} }
.robot-rings { position: absolute; inset: 0; pointer-events: none; }
.ring {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(0,85,255,0.2);
  top: 50%; left: 50%; transform: translate(-50%,-50%);
  animation: spin linear infinite;
}
.ring-1 { width: 360px; height: 360px; animation-duration: 20s; border-style: dashed; }
.ring-2 { width: 300px; height: 300px; animation-duration: 14s; animation-direction: reverse; }
.ring-3 { width: 240px; height: 240px; animation-duration: 9s; border-color: rgba(0,212,255,0.15); }
@keyframes spin { to { transform: translate(-50%,-50%) rotate(360deg); } }

.robot-body { position: relative; z-index: 2; animation: float 4s ease-in-out infinite; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }
.robot-head {
  width: 100px; height: 80px;
  background: linear-gradient(145deg, #0d2450 0%, #162e60 100%);
  border-radius: 20px 20px 14px 14px;
  border: 1px solid rgba(0,85,255,0.4);
  margin: 0 auto 6px;
  position: relative;
  display: flex; align-items: center; justify-content: center; gap: 16px;
  box-shadow: 0 0 20px rgba(0,85,255,0.3);
}
.robot-eye {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: blink 4s ease-in-out infinite;
}
@keyframes blink { 0%,90%,100%{transform:scaleY(1)} 93%{transform:scaleY(0.1)} }
.robot-mouth {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  width: 32px; height: 6px; border-radius: 3px;
  background: rgba(0,212,255,0.4);
  animation: talk 2s ease-in-out infinite;
}
@keyframes talk { 0%,100%{width:32px} 50%{width:20px} }
.robot-torso {
  width: 120px; height: 100px;
  background: linear-gradient(145deg, #0d2450 0%, #162e60 100%);
  border-radius: 14px;
  border: 1px solid rgba(0,85,255,0.35);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 20px rgba(0,85,255,0.2);
}
.robot-chest-panel {
  display: flex; flex-direction: column; gap: 8px; align-items: center;
}
.chest-light {
  width: 40px; height: 6px; border-radius: 3px;
  background: var(--gradient); opacity: 0.7;
  animation: glow 1.8s ease-in-out infinite;
}
.chest-light.l2 { animation-delay: 0.3s; }
.chest-light.l3 { animation-delay: 0.6s; }
@keyframes glow { 0%,100%{opacity:.4} 50%{opacity:.95} }
.robot-arms {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -30%);
  width: 170px; display: flex; justify-content: space-between; pointer-events: none;
}
.robot-arm {
  width: 18px; height: 60px; border-radius: 9px;
  background: linear-gradient(180deg, #0d2450, #0a1a38);
  border: 1px solid rgba(0,85,255,0.3);
}
.robot-arm.left { animation: armL 4s ease-in-out infinite; }
.robot-arm.right{ animation: armR 4s ease-in-out infinite; }
@keyframes armL { 0%,100%{transform:rotate(-8deg)} 50%{transform:rotate(8deg)} }
@keyframes armR { 0%,100%{transform:rotate(8deg)} 50%{transform:rotate(-8deg)} }

.robot-tags { position: absolute; inset: 0; pointer-events: none; }
.robot-tag {
  position: absolute;
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.72rem; font-weight: 600;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 12px;
  color: var(--accent);
  white-space: nowrap;
  pointer-events: none;
}
.robot-tag i { font-size: 0.65rem; }
.tag-1 { top: 10%;  left: -5%;  animation: tagFloat 3.5s ease-in-out infinite; }
.tag-2 { top: 20%;  right: -8%; animation: tagFloat 4s   ease-in-out infinite 0.5s; }
.tag-3 { bottom: 28%; left: -8%; animation: tagFloat 3.8s ease-in-out infinite 1s; }
.tag-4 { bottom: 16%; right: -5%; animation: tagFloat 4.2s ease-in-out infinite 0.2s; }
@keyframes tagFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }

.hero-scroll-hint {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-size: 0.75rem; color: var(--text-muted); z-index: 3;
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(6px)} }

/* =========================================
   TICKER
========================================= */
.ticker-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 14px 0; overflow: hidden;
}
.ticker-track {
  display: flex; gap: 48px; align-items: center;
  animation: ticker 30s linear infinite;
  width: max-content;
}
.ticker-track span {
  font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.04em; color: var(--text-secondary);
  white-space: nowrap;
}
.ticker-dot { color: var(--accent) !important; font-size: 0.5rem !important; }
@keyframes ticker { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }

/* =========================================
   ABOUT
========================================= */
.about { background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 50%, var(--bg-dark) 100%); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: stretch;
}
.about-text p {
  color: var(--text-secondary); line-height: 1.8; margin-bottom: 18px; font-size: 0.97rem;
}
.about-text strong { color: var(--text-primary); }
.about-text em { color: var(--accent); font-style: normal; }
.about-highlights { margin-top: 32px; display: flex; flex-direction: column; gap: 24px; }
.highlight-item {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card2); border-radius: var(--radius);
  border: 1px solid var(--border-light); transition: var(--transition);
}
.highlight-item:hover { border-color: var(--primary); }
.highlight-item > i {
  font-size: 1.2rem; background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  flex-shrink: 0; margin-top: 2px;
}
.highlight-item h4 { font-size: 0.92rem; font-weight: 700; margin-bottom: 3px; }
.highlight-item p  { color: var(--text-secondary); font-size: 0.84rem; margin: 0; }
/* ── About stats row ── */
.about-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 40px;
}
.about-stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg-card2);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 16px 8px 14px;
  text-align: center;
  transition: var(--transition);
}
.about-stat-item:hover {
  border-color: rgba(0,212,255,0.35);
  transform: translateY(-2px);
}
.about-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}
.about-stat-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.3;
}

/* ── About values pills row ── */
.about-values-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.about-value-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: rgba(0,85,255,0.08);
  border: 1px solid rgba(0,85,255,0.18);
  border-radius: 30px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}
.about-value-pill i {
  font-size: 0.75rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-value-pill:hover {
  border-color: rgba(0,212,255,0.4);
  color: var(--text-primary);
}

.about-team h3 {
  font-size: 1.3rem; font-weight: 700; margin-bottom: 24px;
  background: var(--gradient2); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.founder-card {
  display: flex; flex-direction: column; gap: 0;
  background: var(--bg-card2); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  margin-bottom: 20px;
}
.founder-avatar {
  height: 220px;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.2rem; color: rgba(255,255,255,0.85);
  overflow: hidden;
}
.founder-info { padding: 24px; }
.founder-info h4 { font-size: 1.15rem; font-weight: 800; margin-bottom: 4px; }
.founder-title {
  display: inline-block; font-size: 0.75rem;
  color: var(--accent); background: rgba(0,212,255,0.1);
  border-radius: 100px; padding: 3px 12px; margin-bottom: 12px;
}
.founder-info p { color: var(--text-secondary); font-size: 0.86rem; line-height: 1.75; margin-bottom: 14px; }
.founder-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.founder-tags span {
  font-size: 0.75rem; font-weight: 600;
  background: rgba(0,85,255,0.12); border: 1px solid rgba(0,85,255,0.2);
  color: var(--text-secondary); border-radius: 6px; padding: 4px 10px;
}
.mission-vision-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}
.mission-block {
  background: linear-gradient(135deg, rgba(0,85,255,0.1), rgba(0,212,255,0.05));
  border: 1px solid rgba(0,85,255,0.2); border-radius: var(--radius); padding: 18px;
}
.mission-block h4 {
  font-size: 0.88rem; font-weight: 700; margin-bottom: 8px;
  display: flex; align-items: center; gap: 8px; color: var(--accent);
}
.mission-block p { color: var(--text-secondary); font-size: 0.83rem; line-height: 1.7; }

/* =========================================
   PRODUCTS
========================================= */
.products { background: var(--bg-dark); }
.products-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; align-items: start;
}
/* 第2行2张卡居中：flex容器水平居中，卡片宽度与上方3列一致 */
.products-grid-row2 {
  grid-column: 1 / -1;
  display: flex; justify-content: center; gap: 24px;
}
.products-grid-row2 .product-card {
  flex: 0 0 calc((100% - 48px) / 3);
  max-width: calc((100% - 48px) / 3);
}
.product-card {
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: 32px; position: relative;
  transition: var(--transition);
}
.product-card:hover { border-color: var(--primary); transform: translateY(-6px); box-shadow: var(--shadow); }
.product-card.featured {
  background: linear-gradient(145deg, var(--bg-card) 0%, rgba(0,85,255,0.06) 100%);
  border-color: rgba(0,85,255,0.35);
}
.product-badge {
  position: absolute; top: 20px; right: 20px;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.08em;
  background: var(--gradient); color: #fff;
  padding: 4px 12px; border-radius: 100px;
}
.product-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: rgba(0,85,255,0.12); border: 1px solid rgba(0,85,255,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; margin-bottom: 20px;
  background: var(--gradient); color: rgba(255,255,255,0.9);
}
.product-card h3 { font-size: 1.25rem; font-weight: 800; margin-bottom: 4px; }
.product-subtitle { font-size: 0.8rem; color: var(--accent); font-weight: 600; margin-bottom: 14px; }
.product-desc { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.75; margin-bottom: 20px; }
.product-features { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.product-features li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.85rem; color: var(--text-secondary);
}
.product-features li i { color: var(--accent); font-size: 0.7rem; margin-top: 4px; flex-shrink: 0; }

/* =========================================
   TECHNOLOGY
========================================= */
.technology {
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 50%, var(--bg-dark) 100%);
}
.tech-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tech-card {
  background: var(--bg-card2); border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: 28px;
  transition: var(--transition);
}
.tech-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.tech-icon-wrap {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--gradient); color: rgba(255,255,255,0.9);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; margin-bottom: 18px;
}
.tech-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.tech-card p  { color: var(--text-secondary); font-size: 0.86rem; line-height: 1.75; margin-bottom: 16px; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tech-tags span {
  font-size: 0.72rem; font-weight: 600;
  background: rgba(0,85,255,0.1); border: 1px solid rgba(0,85,255,0.2);
  color: var(--accent); border-radius: 6px; padding: 3px 10px;
}

/* =========================================
   PATENTS & IP
========================================= */
.patents {
  background: var(--bg-dark);
}

/* Stats Row */
.patent-stats-row {
  display: flex; flex-wrap: wrap; gap: 16px;
  justify-content: center; margin-bottom: 56px;
}
.patent-stat-card {
  flex: 1; min-width: 160px; max-width: 220px;
  background: var(--bg-card2); border: 1px solid var(--border-light);
  border-radius: var(--radius); padding: 28px 20px;
  text-align: center; transition: var(--transition);
}
.patent-stat-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.patent-stat-num {
  font-size: 2.4rem; font-weight: 800; line-height: 1;
  font-family: 'Space Grotesk', sans-serif; margin-bottom: 8px;
}
.patent-stat-label {
  font-size: 0.88rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px;
}
.patent-stat-sub {
  font-size: 0.72rem; color: var(--text-muted);
}

/* Patent Grid */
.patent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
@media (max-width: 1024px) { .patent-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .patent-grid { grid-template-columns: 1fr; } }

.patent-card {
  background: var(--bg-card2); border: 1px solid var(--border-light);
  border-radius: var(--radius); padding: 24px;
  transition: var(--transition); display: flex; flex-direction: column; gap: 12px;
  position: relative; overflow: hidden;
}
.patent-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--gradient); opacity: 0;
  transition: opacity 0.3s ease;
}
.patent-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(99,102,241,0.15); }
.patent-card:hover::before { opacity: 1; }

.patent-card-header {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
}
.patent-icon {
  width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
  background: rgba(99,102,241,0.1); border: 1px solid rgba(99,102,241,0.2);
  display: flex; align-items: center; justify-content: center;
}
.patent-icon i {
  font-size: 1.1rem;
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.patent-meta {
  display: flex; flex-direction: column; gap: 6px; align-items: flex-end;
}
.patent-id {
  font-size: 0.68rem; color: var(--text-muted); font-family: 'Space Grotesk', monospace;
  white-space: nowrap;
}
.patent-status {
  font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.5px; padding: 3px 10px; border-radius: 100px;
}
.status-pending  { background: rgba(251,191,36,0.12); color: #fbbf24; border: 1px solid rgba(251,191,36,0.25); }
.status-granted  { background: rgba(52,211,153,0.12); color: #34d399; border: 1px solid rgba(52,211,153,0.25); }

.patent-title {
  font-size: 0.95rem; font-weight: 600; color: var(--text-primary);
  line-height: 1.45; flex: 1;
}
.patent-desc {
  font-size: 0.83rem; color: var(--text-secondary); line-height: 1.65;
}
.patent-tags {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto;
}
.patent-tags span {
  font-size: 0.68rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.4px; padding: 3px 10px; border-radius: 4px;
  background: rgba(99,102,241,0.08); color: var(--primary);
  border: 1px solid rgba(99,102,241,0.18);
}
.patent-footer {
  font-size: 0.74rem; color: var(--text-muted);
  padding-top: 12px; border-top: 1px solid var(--border-light);
}
.patent-footer i { margin-right: 4px; }

/* Disclaimer */
.patent-disclaimer {
  display: flex; align-items: flex-start; gap: 12px;
  background: rgba(255,255,255,0.02); border: 1px solid var(--border-light);
  border-radius: 10px; padding: 16px 20px;
  font-size: 0.78rem; color: var(--text-muted); line-height: 1.6;
}
.patent-disclaimer i {
  flex-shrink: 0; margin-top: 2px; font-size: 1rem;
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}

/* =========================================
   SOLUTIONS
========================================= */
.solutions { background: var(--bg-dark); }
.solutions-tabs { }
.tab-buttons {
  display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap;
}
.tab-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: 8px;
  font-size: 0.88rem; font-weight: 600; cursor: pointer;
  border: 1px solid var(--border-light);
  background: var(--bg-card); color: var(--text-secondary);
  transition: var(--transition);
}
.tab-btn:hover   { border-color: var(--primary); color: var(--text-primary); }
.tab-btn.active  { background: var(--gradient); color: #fff; border-color: transparent; box-shadow: 0 4px 20px rgba(0,85,255,0.3); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.tab-panel-inner {
  display: grid; grid-template-columns: 1.2fr 0.8fr;
  gap: 48px; align-items: start;
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: 40px;
}
.tab-info h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 14px; }
.tab-info p  { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.8; margin-bottom: 24px; }
.solution-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }
.solution-list li {
  display: flex; align-items: center; gap: 12px;
  font-size: 0.9rem; color: var(--text-secondary);
}
.solution-list li i { color: #22c55e; flex-shrink: 0; }
.tab-visual { display: flex; justify-content: center; align-items: flex-start; }
.scene-card {
  background: var(--bg-card2); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px 28px;
  text-align: center; width: 100%;
}
.scene-icon {
  width: 72px; height: 72px; border-radius: 18px;
  background: var(--gradient); color: rgba(255,255,255,0.9);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; margin: 0 auto 28px;
}
.scene-stats {
  display: flex; flex-direction: column; gap: 16px;
}
.scene-stat span {
  display: block; font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem; font-weight: 800;
  background: var(--gradient2); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 2px;
}
.scene-stat small { font-size: 0.78rem; color: var(--text-muted); }

/* =========================================
   CONTACT
========================================= */
.contact { background: var(--bg-dark); }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.6fr;
  gap: 48px; align-items: start;
}
.contact-info-block { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius); transition: var(--transition);
}
.contact-item:hover { border-color: var(--primary); }
.contact-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: rgba(0,85,255,0.12); border: 1px solid rgba(0,85,255,0.2);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.contact-icon i {
  font-size: 1rem; background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.contact-item h4 { font-size: 0.88rem; font-weight: 700; margin-bottom: 3px; }
.contact-item p  { color: var(--text-secondary); font-size: 0.84rem; line-height: 1.6; margin: 0; }
.contact-form-block {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px;
}
.contact-form-block h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 24px; }
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.83rem; font-weight: 600; color: var(--text-secondary); }
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-card2); border: 1px solid var(--border-light);
  border-radius: 8px; padding: 12px 16px;
  color: var(--text-primary); font-size: 0.9rem; font-family: inherit;
  outline: none; transition: var(--transition); resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,85,255,0.12);
}
.form-group select option { background: var(--bg-card2); color: var(--text-primary); }

/* =========================================
   FOOTER
========================================= */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-light);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 48px;
}
.footer-brand p {
  color: var(--text-muted); font-size: 0.86rem;
  line-height: 1.75; max-width: 280px; margin-bottom: 20px;
}
.footer-socials { display: flex; gap: 12px; }
.footer-socials a {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--bg-card2); border: 1px solid var(--border-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); transition: var(--transition); font-size: 0.9rem;
}
.footer-socials a:hover { border-color: var(--primary); color: var(--accent); }
.footer-links h5 { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 16px; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 0.88rem; color: var(--text-muted); transition: var(--transition); }
.footer-links a:hover { color: var(--text-primary); }
.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 0.82rem; color: var(--text-muted); }
.footer-legal { display: flex; gap: 20px; }
.footer-legal a { font-size: 0.82rem; color: var(--text-muted); transition: var(--transition); }
.footer-legal a:hover { color: var(--text-primary); }

/* =========================================
   RESPONSIVE
========================================= */
@media (max-width: 1100px) {
  .products-grid  { grid-template-columns: 1fr; }
  .products-grid-row2 { flex-direction: column; }
  .products-grid-row2 .product-card { flex: 1 1 auto; max-width: 100%; }
  .tech-grid      { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 960px) {
  .hero-content   { grid-template-columns: 1fr; text-align: center; }
  .hero-left      { order: 2; }
  .hero-right     { order: 1; }
  .hero-actions   { justify-content: center; }
  .hero-stats     { margin: 0 auto; }
  /* Hero v2 响应式 */
  .hero-content-v2 { padding: 0 28px; padding-top: 80px; }
  .hero-title-v2  { font-size: clamp(2.4rem, 8vw, 3.4rem); }
  .hero-desc-v2   { font-size: 1rem; }
  .hero-chips     { justify-content: flex-start; }
  .hero-actions-v2 { flex-direction: column; align-items: flex-start; }
  .hero-stats-bar { padding: 16px 20px; flex-wrap: wrap; gap: 12px; }
  .hero-stat-div  { display: none; }
  .hero-stat      { flex: 0 0 45%; }
  .about-grid     { grid-template-columns: 1fr; }
  .contact-grid   { grid-template-columns: 1fr; }
  .tab-panel-inner{ grid-template-columns: 1fr; }
  .footer-grid    { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 4px;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(5,10,21,0.97);
    backdrop-filter: blur(16px);
    padding: 16px; border-bottom: 1px solid var(--border-light);
    max-height: 80vh; overflow-y: auto;
  }
  .nav-links.open + .nav-cta { display: none; }

  /* Mobile dropdown */
  .nav-dropdown { width: 100%; padding-bottom: 0; margin-bottom: 0; }
  .nav-has-dropdown { justify-content: space-between; width: 100%; }
  .dropdown-menu {
    position: static; transform: none !important;
    opacity: 0; max-height: 0; overflow: hidden; visibility: hidden;
    box-shadow: none; border: none; border-radius: 8px;
    background: rgba(255,255,255,0.04);
    margin: 4px 0 4px 10px; padding: 0;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
  }
  .dropdown-menu::before, .dropdown-menu::after { display: none; }
  .nav-dropdown.mobile-open .dropdown-menu {
    opacity: 1; visibility: visible; max-height: 500px;
    padding: 8px;
  }
  .nav-dropdown.mobile-open .nav-arrow { transform: rotate(180deg); }

  .tech-grid { grid-template-columns: 1fr; }
  .robot-showcase { width: 300px; height: 300px; }
  .ring-1 { width: 260px; height: 260px; }
  .ring-2 { width: 210px; height: 210px; }
  .ring-3 { width: 165px; height: 165px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .contact-form-block { padding: 24px; }
  .tab-panel-inner { padding: 24px; }
}

/* =========================================
   ACHIEVEMENTS (数字成就区)
========================================= */
.achievements {
  background: linear-gradient(135deg, rgba(0,85,255,0.06) 0%, rgba(0,212,255,0.03) 100%);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 80px 0;
}
.achievements-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.ach-card {
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: 32px 24px;
  text-align: center; transition: var(--transition);
  position: relative; overflow: hidden;
}
.ach-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient);
}
.ach-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.ach-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: rgba(0,85,255,0.12); border: 1px solid rgba(0,85,255,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; margin: 0 auto 16px;
  background: var(--gradient); color: rgba(255,255,255,0.9);
}
.ach-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.4rem; font-weight: 900; line-height: 1;
  background: var(--gradient2); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 6px; display: flex; align-items: baseline;
  justify-content: center; gap: 2px;
}
.ach-suffix { font-size: 1.4rem; }
.ach-label {
  font-size: 0.9rem; font-weight: 700; margin-bottom: 8px; color: var(--text-primary);
}
.ach-desc { font-size: 0.78rem; color: var(--text-muted); line-height: 1.6; }

/* =========================================
   AWARDS & RECOGNITION
========================================= */
.awards-section {
  background: var(--bg-section);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.awards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.award-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: var(--transition);
  overflow: hidden;
}
.award-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient);
  opacity: 0.7;
  transition: opacity 0.3s;
}
.award-card:hover {
  border-color: var(--primary);
  transform: translateY(-5px);
  box-shadow: 0 16px 40px rgba(0,85,255,0.12);
}
.award-card:hover::before { opacity: 1; }

.award-icon-wrap {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(0,85,255,0.12);
  border: 1px solid rgba(0,85,255,0.22);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  color: var(--primary);
  flex-shrink: 0;
}
.award-body { flex: 1; }
.award-org {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 5px;
}
.award-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 8px;
}
.award-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.award-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  background: rgba(0,85,255,0.1);
  border: 1px solid rgba(0,85,255,0.25);
  color: var(--primary);
  width: fit-content;
}

/* responsive */
@media (max-width: 1100px) {
  .awards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .awards-grid { grid-template-columns: 1fr; }
}


========================================= */
.product-specs {
  display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap;
}
.spec-item {
  display: flex; flex-direction: column; align-items: center;
  background: var(--bg-card2); border: 1px solid var(--border-light);
  border-radius: 8px; padding: 8px 14px; flex: 1; min-width: 60px;
}
.spec-k { font-size: 0.68rem; color: var(--text-muted); margin-bottom: 2px; }
.spec-v { font-size: 0.82rem; font-weight: 700; color: var(--accent); }

/* =========================================
   VISION BLOCK
========================================= */
.vision-block {
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(0,85,255,0.05));
  border: 1px solid rgba(124,58,237,0.2); border-radius: var(--radius);
  padding: 18px;
}
.vision-block h4 {
  font-size: 0.88rem; font-weight: 700; margin-bottom: 8px;
  display: flex; align-items: center; gap: 8px; color: #a78bfa;
}
.vision-block p { color: var(--text-secondary); font-size: 0.83rem; line-height: 1.7; }

/* =========================================
   TECH FLOW (工作流程图)
========================================= */
.tech-flow {
  margin-top: 56px;
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: 40px;
}
.flow-title {
  text-align: center; font-size: 1.15rem; font-weight: 700;
  margin-bottom: 36px; color: var(--text-secondary);
}
.flow-steps {
  display: flex; align-items: center; justify-content: center;
  gap: 16px; flex-wrap: wrap;
}
.flow-step {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  flex: 1; min-width: 120px; max-width: 160px; text-align: center;
}
.flow-icon {
  width: 60px; height: 60px; border-radius: 50%;
  background: var(--gradient); color: rgba(255,255,255,0.9);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; box-shadow: 0 0 20px rgba(0,85,255,0.3);
  transition: var(--transition);
}
.flow-icon:hover { transform: scale(1.08); }
.flow-label { font-size: 0.92rem; font-weight: 700; }
.flow-desc { font-size: 0.75rem; color: var(--text-muted); line-height: 1.5; }
.flow-arrow {
  color: var(--text-muted); font-size: 1.1rem; flex-shrink: 0;
  margin-bottom: 30px;
}

/* =========================================
   PARTNERS
========================================= */
.partners {
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 50%, var(--bg-dark) 100%);
}
.partners-row {
  display: flex; gap: 16px; flex-wrap: wrap;
  justify-content: center; margin-bottom: 40px;
}
/* (legacy card — kept for fallback) */
.partner-logo-card {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: var(--bg-card2); border: 1px solid var(--border-light);
  border-radius: var(--radius); padding: 24px 28px;
  min-width: 130px; flex: 1; max-width: 180px;
  transition: var(--transition); cursor: default;
}
.partner-logo-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.partner-logo-card i {
  font-size: 1.8rem;
  background: var(--gradient2); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.partner-logo-card span { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); }
/* =========================================
   PARTNERS — TIERED LAYOUT
========================================= */
.partners-category {
  margin-bottom: 40px;
}
.partners-category-label {
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--text-muted);
  margin-bottom: 16px; padding-left: 4px;
  position: relative;
}
.partners-category-label::before {
  content: '';
  display: inline-block; width: 18px; height: 2px;
  background: var(--gradient); margin-right: 8px;
  vertical-align: middle; border-radius: 2px;
}

/* Tier 1: Large strategic cards */
.partners-tier1-row {
  display: flex; flex-wrap: wrap; gap: 16px;
}
.partner-card-lg {
  flex: 1; min-width: 200px; max-width: 310px;
  background: var(--bg-card2);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 22px 20px 18px;
  display: flex; flex-direction: column; gap: 8px;
  transition: var(--transition); cursor: default;
  position: relative; overflow: hidden;
}
.partner-card-lg::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px; border-radius: 14px 14px 0 0;
}
.partner-card-lg:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.35);
}
.partner-card-logo {
  display: flex; align-items: center; gap: 8px;
  height: 32px;
}
.partner-card-logo svg { height: 28px; color: var(--text-secondary); }
.partner-logo-text {
  font-size: 1.1rem; font-weight: 800;
  color: var(--text-primary); letter-spacing: -0.5px;
}
.partner-card-desc {
  font-size: 0.78rem; color: var(--text-muted); line-height: 1.4;
}
.partner-card-badge {
  display: inline-block; font-size: 0.62rem; font-weight: 700;
  padding: 3px 9px; border-radius: 20px;
  text-transform: uppercase; letter-spacing: 0.5px;
  width: fit-content;
}

/* Brand accent colors for Tier 1 */
.partner-nvidia { border-color: rgba(118,185,0,0.25); }
.partner-nvidia::before { background: linear-gradient(90deg, transparent, #76b900, transparent); }
.partner-nvidia .partner-card-badge { background: rgba(118,185,0,0.12); color: #76b900; border: 1px solid rgba(118,185,0,0.3); }
.partner-nvidia:hover { border-color: rgba(118,185,0,0.5); }

.partner-aws { border-color: rgba(255,153,0,0.25); }
.partner-aws::before { background: linear-gradient(90deg, transparent, #FF9900, transparent); }
.partner-aws .partner-card-badge { background: rgba(255,153,0,0.1); color: #FF9900; border: 1px solid rgba(255,153,0,0.3); }
.partner-aws:hover { border-color: rgba(255,153,0,0.5); }

.partner-google { border-color: rgba(66,133,244,0.25); }
.partner-google::before { background: linear-gradient(90deg, transparent, #4285F4, transparent); }
.partner-google .partner-card-badge { background: rgba(66,133,244,0.1); color: #4285F4; border: 1px solid rgba(66,133,244,0.3); }
.partner-google:hover { border-color: rgba(66,133,244,0.5); }

.partner-microsoft { border-color: rgba(0,164,239,0.25); }
.partner-microsoft::before { background: linear-gradient(90deg, transparent, #00A4EF, transparent); }
.partner-microsoft .partner-card-badge { background: rgba(0,164,239,0.1); color: #00A4EF; border: 1px solid rgba(0,164,239,0.3); }
.partner-microsoft:hover { border-color: rgba(0,164,239,0.5); }

/* Tier 2 & 3: Small icon cards */
.partners-grid-row {
  display: flex; flex-wrap: wrap; gap: 12px;
}
.partner-card-sm {
  flex: 1; min-width: 130px; max-width: 185px;
  background: var(--bg-card2);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 16px 14px 14px;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  transition: var(--transition); cursor: default;
}
.partner-card-sm:hover {
  border-color: var(--primary); transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,85,255,0.15);
}
.partner-card-sm i {
  font-size: 1.5rem;
  background: var(--gradient2); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.pc-svg-logo {
  height: 22px; width: auto; max-width: 100%;
  color: var(--text-secondary);
  display: block; margin: 0 auto 2px;
}
.partner-card-sm .pc-name {
  font-size: 0.82rem; font-weight: 700;
  color: var(--text-secondary); text-align: center;
}
.partner-card-sm .pc-role {
  font-size: 0.68rem; color: var(--text-muted); text-align: center;
}

.trust-bar {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 16px;
  padding: 20px 32px;
  background: rgba(0,85,255,0.05); border: 1px solid rgba(0,85,255,0.12);
  border-radius: var(--radius-lg);
}
.trust-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.83rem; font-weight: 600; color: var(--text-secondary);
}
.trust-item i {
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  font-size: 0.9rem;
}
.trust-divider { color: var(--border-light); font-size: 1.2rem; }

/* =========================================
   NEWS
========================================= */
.news {
  background: var(--bg-dark);
}
.news-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 24px;
}
.news-card {
  background: var(--bg-card); border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: 28px;
  transition: var(--transition); position: relative; overflow: hidden;
  display: flex; flex-direction: column; gap: 12px;
}
.news-card::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 2px; background: var(--gradient);
  transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.news-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.news-card:hover::after { transform: scaleX(1); }
.news-card.featured-news {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0,85,255,0.06) 100%);
  border-color: rgba(0,85,255,0.25);
}
.news-tag {
  display: inline-block; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 4px 12px; border-radius: 100px; width: fit-content;
}
.news-date {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.78rem; color: var(--text-muted);
}
.news-card h3 {
  font-size: 1rem; font-weight: 700; line-height: 1.45;
  color: var(--text-primary);
}
.news-card.featured-news h3 { font-size: 1.25rem; }
.news-card p {
  color: var(--text-secondary); font-size: 0.86rem; line-height: 1.75;
  flex: 1;
}
.news-footer {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px;
  padding-top: 14px; border-top: 1px solid var(--border-light);
  margin-top: auto;
}
.news-author { display: flex; align-items: center; gap: 6px; font-size: 0.78rem; color: var(--text-muted); }
.news-read-more {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.82rem; font-weight: 600; color: var(--accent);
  transition: var(--transition);
}
.news-read-more:hover { gap: 10px; }

/* =========================================
   NEWS V2 — upgraded cards
========================================= */

/* Filter tabs */
.news-filter-tabs {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 32px;
}
.news-filter-btn {
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.04em;
  padding: 7px 18px; border-radius: 100px;
  border: 1px solid var(--border-light);
  background: transparent; color: var(--text-secondary);
  cursor: pointer; transition: var(--transition);
}
.news-filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.news-filter-btn.active {
  background: var(--primary); border-color: var(--primary); color: #fff;
}

/* Grid */
.news-grid-v2 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
/* 第一张(Featured)占满行 */
.news-card-featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 52% 48%;
  min-height: 260px;
}
.news-card-featured .nc-img-wrap {
  height: 100%; max-height: 340px; border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}
.news-card-featured .nc-img-wrap img {
  height: 100%; max-height: 340px; border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}
.news-card-featured .nc-body {
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  border-left: none;
}
.news-card-featured .nc-title a { font-size: 1.25rem; }
.news-card-featured .nc-excerpt { font-size: 0.92rem; -webkit-line-clamp: 4; }

/* Card base */
.news-card-v2 {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: var(--transition);
}
.news-card-v2:hover {
  border-color: var(--primary);
  transform: translateY(-5px);
  box-shadow: 0 16px 40px rgba(0,85,255,0.15);
}

/* Image wrapper */
.nc-img-wrap {
  position: relative; display: block; overflow: hidden;
  height: 200px; flex-shrink: 0;
}
.nc-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4,0,0.2,1);
  display: block;
}
.news-card-v2:hover .nc-img-wrap img { transform: scale(1.05); }

/* Category badge on image */
.nc-category {
  position: absolute; top: 14px; left: 14px;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 4px 12px; border-radius: 100px;
  pointer-events: none; line-height: 1;
}
.cat-company { background: rgba(0,85,255,0.85);  color: #fff; }
.cat-tech    { background: rgba(0,180,220,0.85);  color: #fff; }
.cat-product { background: rgba(124,58,237,0.85); color: #fff; }
.cat-ip      { background: rgba(5,150,105,0.85);  color: #fff; }
.cat-award   { background: rgba(217,119,6,0.85);  color: #fff; }

/* Card body */
.nc-body {
  padding: 20px 22px 20px;
  display: flex; flex-direction: column; flex: 1;
  gap: 10px;
}

/* Meta row */
.nc-meta {
  display: flex; flex-wrap: wrap; gap: 12px;
  font-size: 0.76rem; color: var(--text-muted);
}
.nc-meta i { margin-right: 4px; color: var(--accent); opacity: 0.7; }

/* Title */
.nc-title {
  margin: 0;
  font-size: 1rem; font-weight: 700;
  line-height: 1.45;
}
.nc-title a {
  color: var(--text-primary); text-decoration: none;
  transition: color 0.2s;
}
.nc-title a:hover { color: var(--accent); }

/* Excerpt */
.nc-excerpt {
  font-size: 0.86rem; color: var(--text-secondary);
  line-height: 1.75; flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Footer */
.nc-footer {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px;
  padding-top: 14px; border-top: 1px solid var(--border-light);
  margin-top: auto;
}
.nc-author { display: flex; align-items: center; gap: 6px; font-size: 0.76rem; color: var(--text-muted); }
.nc-read-more {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8rem; font-weight: 600; color: var(--accent);
  text-decoration: none; transition: gap 0.2s;
  white-space: nowrap;
}
.nc-read-more:hover { gap: 10px; }

/* hidden cards */
.news-card-v2.nc-hidden {
  display: none;
}

/* View All button */
.news-view-all {
  text-align: center; margin-top: 40px;
}

/* Responsive */
@media (max-width: 1100px) {
  .news-grid-v2 { grid-template-columns: repeat(2, 1fr); }
  .news-card-featured {
    grid-column: 1 / -1;
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .news-card-featured .nc-img-wrap,
  .news-card-featured .nc-img-wrap img {
    height: 240px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }
  .news-card-featured .nc-body {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border-left: 1px solid var(--border-light);
  }
}
@media (max-width: 640px) {
  .news-grid-v2 { grid-template-columns: 1fr; }
}

/* =========================================
   CTA BANNER
========================================= */
.cta-banner {
  background: linear-gradient(135deg, rgba(0,85,255,0.12) 0%, rgba(124,58,237,0.08) 50%, rgba(0,212,255,0.06) 100%);
  border-top: 1px solid rgba(0,85,255,0.15);
  border-bottom: 1px solid rgba(0,85,255,0.15);
  padding: 72px 0;
}
.cta-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 40px; flex-wrap: wrap;
}
.cta-content h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800; margin-bottom: 12px; line-height: 1.25;
}
.cta-content p { color: var(--text-secondary); font-size: 1rem; max-width: 520px; }
.cta-actions { display: flex; gap: 16px; flex-shrink: 0; flex-wrap: wrap; }

/* =========================================
   HERO BADGE DOT
========================================= */
.badge-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 6px #22c55e;
  animation: blink-dot 2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes blink-dot { 0%,100%{opacity:1} 50%{opacity:0.4} }

/* =========================================
   RESPONSIVE — NEW SECTIONS
========================================= */
@media (max-width: 1100px) {
  .achievements-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 960px) {
  .news-grid { grid-template-columns: 1fr; }
  .news-card.featured-news { grid-column: 1; }
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-content p { margin: 0 auto; }
  .cta-actions { justify-content: center; }
  .flow-steps { gap: 8px; }
  .flow-arrow { display: none; }
  .trust-bar { gap: 10px; }
  .trust-divider { display: none; }
}
@media (max-width: 768px) {
  .achievements-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-row { gap: 12px; }
  .partner-logo-card { min-width: 100px; padding: 18px 16px; }
  .partners-tier1-row { gap: 12px; }
  .partner-card-lg { min-width: 150px; padding: 16px 14px; }
  .partner-card-sm { min-width: 110px; padding: 14px 10px; }
}

/* =========================================
   HERO — REAL PHOTO VERSION
========================================= */
.hero-bg-image {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center 30%;
  opacity: 0.08;
  pointer-events: none;
}
/* Gradient fallback when no external image is used */
.hero-bg-gradient {
  background-image:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(0,85,255,0.35) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 75% 25%, rgba(124,58,237,0.25) 0%, transparent 55%),
    radial-gradient(ellipse 50% 80% at 90% 80%, rgba(0,212,255,0.2) 0%, transparent 60%);
  opacity: 0.6;
}
/* Wrap层：不裁切，让标签溢出显示 */
.hero-robot-photo-wrap {
  position: relative;
  width: 480px; height: 560px;
  /* 两侧各留32px给标签 */
  padding: 0 36px;
  box-sizing: content-box;
  flex-shrink: 0;
}
/* 照片容器：负责裁切圆角，宽度填满wrap内容区 */
.hero-robot-photo {
  position: relative; width: 100%; height: 100%;
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 0 60px rgba(0,85,255,0.25), var(--shadow-lg);
}
.hero-robot-photo img,
.hero-robot-video {
  width: 100%; height: 100%; object-fit: cover;
  object-position: center 20%; display: block;
  transition: transform 0.6s ease;
}
.hero-robot-photo-wrap:hover .hero-robot-photo img,
.hero-robot-photo-wrap:hover .hero-robot-video { transform: scale(1.04); }
.robot-photo-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(5,10,21,0.6) 0%, transparent 55%);
  pointer-events: none;
}
/* float-tag keyframe 保留（产品页可能使用） */
@keyframes float-tag {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@media (max-width: 1100px) {
  .hero-robot-photo-wrap { width: 360px; height: 440px; }
}
@media (max-width: 900px) {
  .hero-robot-photo-wrap { width: 260px; height: 340px; margin: 0 auto; padding: 0 16px; }
  .robot-tag { display: none; }
}

/* =========================================
   GALLERY SLIDER (宇树风格全屏产品轮播)
========================================= */
.gallery {
  background: var(--bg-dark);
  padding-bottom: 0;
}
.gallery-header {
  text-align: center; padding-bottom: 48px;
}
.gallery-slider {
  position: relative; width: 100%;
  height: 640px; overflow: hidden;
  border-radius: var(--radius-lg);
  margin: 0 auto;
  max-width: 1400px;
}
.gallery-slide {
  position: absolute; inset: 0;
  display: flex; align-items: center;
  opacity: 0; transform: translateX(60px);
  transition: opacity 0.55s ease, transform 0.55s ease;
  pointer-events: none;
  padding: 0 72px;
  gap: 48px;
  z-index: 1;
}
.gallery-slide.active {
  opacity: 1; transform: translateX(0);
  pointer-events: auto;
  z-index: 2;
}
.gallery-slide.slide-out {
  opacity: 0; transform: translateX(-60px);
  transition: opacity 0.55s ease, transform 0.55s ease;
  z-index: 1;
}
.gallery-slide-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  filter: brightness(0.28) saturate(0.6);
  z-index: 0;
}
.gallery-slide-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(
    105deg,
    rgba(5,10,21,0.92) 0%,
    rgba(5,10,21,0.65) 55%,
    rgba(5,10,21,0.15) 100%
  );
}
.gallery-slide-content {
  position: relative; z-index: 2;
  flex: 0 0 50%; max-width: 520px;
}
.gallery-product-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent);
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.22);
  padding: 6px 16px; border-radius: 100px;
  margin-bottom: 20px;
}
.gallery-product-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900; line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 18px;
}
.gallery-product-desc {
  color: var(--text-secondary); font-size: 1rem;
  line-height: 1.75; margin-bottom: 28px;
  max-width: 440px;
}
.gallery-specs-row {
  display: flex; gap: 16px; margin-bottom: 32px; flex-wrap: wrap;
}
.gallery-spec {
  display: flex; flex-direction: column; align-items: flex-start;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: 10px; padding: 10px 16px; min-width: 72px;
}
.gs-val {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem; font-weight: 800;
  background: var(--gradient2); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1;
}
.gs-key { font-size: 0.7rem; color: var(--text-muted); margin-top: 4px; }
.gallery-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-glass {
  padding: 12px 24px; border-radius: 10px;
  font-size: 0.92rem; font-weight: 600; cursor: pointer;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-primary); text-decoration: none;
  transition: var(--transition); display: inline-flex;
  align-items: center; gap: 8px;
}
.btn-glass:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.28);
}
.gallery-robot-image {
  position: relative; z-index: 2;
  flex: 1; display: flex; justify-content: center; align-items: center;
}
.gallery-robot-image img {
  width: 100%; max-width: 420px; height: 520px;
  object-fit: cover; object-position: center top;
  border-radius: var(--radius-lg);
  box-shadow: 0 0 80px rgba(0,85,255,0.3);
  border: 1px solid rgba(0,85,255,0.2);
}
/* Controls */
.gallery-controls {
  display: flex; align-items: center; justify-content: center;
  gap: 24px; padding: 28px 0 16px;
}
.gallery-arrow {
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-light);
  color: var(--text-primary); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; transition: var(--transition);
}
.gallery-arrow:hover {
  background: var(--primary); border-color: var(--primary);
  box-shadow: 0 0 20px rgba(0,85,255,0.4);
}
.gallery-dots { display: flex; gap: 10px; align-items: center; }
.gallery-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.2); border: none; cursor: pointer;
  transition: var(--transition); padding: 0;
}
.gallery-dot.active {
  background: var(--primary); width: 28px; border-radius: 4px;
  box-shadow: 0 0 12px rgba(0,85,255,0.6);
}
.gallery-progress-bar {
  height: 2px; background: rgba(255,255,255,0.06);
  position: relative; overflow: hidden;
}
.gallery-progress-bar::after {
  content: ''; position: absolute; left: 0; top: 0; height: 100%;
  background: var(--gradient); width: 33.33%;
  transition: width 0.4s ease;
}
@media (max-width: 960px) {
  .gallery-slider { height: auto; min-height: 700px; }
  .gallery-slide {
    flex-direction: column-reverse; padding: 40px 32px;
    gap: 24px; justify-content: flex-end;
  }
  .gallery-slide-content { flex: none; max-width: 100%; }
  .gallery-robot-image img { max-width: 320px; height: 360px; }
  .gallery-product-title { font-size: 1.8rem; }
}
@media (max-width: 600px) {
  .gallery-slider { min-height: 600px; }
  .gallery-robot-image img { max-width: 260px; height: 280px; }
}

/* =========================================
   ROBOT SCENE STRIP (横向滚动照片带)
========================================= */
.scene-strip-wrapper {
  background: var(--bg-dark);
  padding-top: 16px;
}
.scene-strip-header {
  text-align: center; margin-bottom: 12px;
}
.scene-strip-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: 100px; padding: 6px 16px;
}
.scene-strip-label i {
  font-size: 0.7rem;
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.robot-scene-strip {
  overflow: hidden; padding: 24px 0 48px;
  background: var(--bg-dark);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.scene-strip-track {
  display: flex; gap: 16px;
  width: max-content;
  animation: strip-scroll 32s linear infinite;
}
.robot-scene-strip:hover .scene-strip-track {
  animation-play-state: paused;
}
@keyframes strip-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
/* Legacy item style (kept for fallback) */
.scene-strip-item {
  position: relative; flex-shrink: 0;
  width: 280px; height: 200px;
  border-radius: var(--radius);
  overflow: hidden; cursor: pointer;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  background: linear-gradient(135deg, #0d1a2e 0%, #1a2a44 50%, #0d1a2e 100%);
}

/* =========================================
   BRAND CARDS — SVG Robot Illustrations
========================================= */
.scene-strip-card {
  position: relative; flex-shrink: 0;
  width: 260px; height: 210px;
  border-radius: 12px;
  overflow: hidden; cursor: pointer;
  border: 1px solid rgba(255,255,255,0.1);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  display: flex; flex-direction: column;
  align-items: center; justify-content: flex-end;
  padding: 0 14px 12px;
  gap: 4px;
}
.scene-strip-card:hover {
  transform: scale(1.05) translateY(-4px);
  border-color: rgba(255,255,255,0.3);
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
}
.scene-card-svg {
  width: 72px; height: 72px; flex-shrink: 0;
}
.scene-card-svg svg { width: 100%; height: 100%; }

/* Real photo variant */
.scene-card-photo {
  width: 100%; height: 110px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  margin-bottom: 2px;
}
.scene-card-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  filter: brightness(0.85) saturate(1.1);
}
.scene-strip-card:hover .scene-card-photo img {
  transform: scale(1.06);
  filter: brightness(1) saturate(1.2);
}
.scene-card-brand {
  font-size: 0.82rem; font-weight: 700;
  color: rgba(255,255,255,0.95);
  text-align: center; letter-spacing: 0.3px;
  line-height: 1.2;
}
.scene-card-model {
  font-size: 0.7rem; font-weight: 500;
  color: rgba(255,255,255,0.6);
  text-align: center;
}
.scene-card-tag {
  font-size: 0.63rem; font-weight: 600;
  padding: 3px 10px; border-radius: 20px;
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.15);
}
/* Brand-specific gradients */
.scene-card-bd       { background: linear-gradient(135deg, #0a1628 0%, #0d2444 50%, #091d38 100%); }
.scene-card-kuka     { background: linear-gradient(135deg, #1a1200 0%, #2d1e00 50%, #1a1200 100%); }
.scene-card-intuitive{ background: linear-gradient(135deg, #001a2e 0%, #002d4d 50%, #001a2e 100%); }
.scene-card-abb      { background: linear-gradient(135deg, #1a0000 0%, #2e0505 50%, #1a0000 100%); }
.scene-card-softbank { background: linear-gradient(135deg, #001428 0%, #002244 50%, #001428 100%); }
.scene-card-honda    { background: linear-gradient(135deg, #060d1f 0%, #0d1a38 50%, #060d1f 100%); }
.scene-card-fanuc    { background: linear-gradient(135deg, #0f1400 0%, #1e2800 50%, #0f1400 100%); }
.scene-card-tesla    { background: linear-gradient(135deg, #1a0206 0%, #2e0510 50%, #1a0206 100%); }
/* Glowing top border for each brand */
.scene-card-bd::before       { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg, transparent, #4a9eff, transparent); }
.scene-card-kuka::before     { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg, transparent, #ffcc00, transparent); }
.scene-card-intuitive::before{ content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg, transparent, #00c8ff, transparent); }
.scene-card-abb::before      { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg, transparent, #ff3333, transparent); }
.scene-card-softbank::before { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg, transparent, #3399ff, transparent); }
.scene-card-honda::before    { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg, transparent, #aaccff, transparent); }
.scene-card-fanuc::before    { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg, transparent, #ddee00, transparent); }
.scene-card-tesla::before    { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg, transparent, #e01e26, transparent); }

/* =========================================
   PRODUCT CARDS — WITH PHOTO
========================================= */
.product-photo-wrap {
  position: relative; width: 100%; height: 220px;
  overflow: hidden; border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  flex-shrink: 0;
}
.product-photo {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: transform 0.5s ease;
}
.product-card:hover .product-photo { transform: scale(1.06); }
.product-photo-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 50%, var(--bg-card) 100%);
}
/* Adjust product-card to accommodate photo */
.product-card {
  display: flex !important;
  flex-direction: column !important;
  padding: 0 !important;
}
.product-body {
  padding: 28px 28px 28px;
  display: flex; flex-direction: column; gap: 12px; flex: 1;
}
.product-card .product-icon { margin-bottom: 0; }
.product-card .btn { margin-top: auto; }

/* =========================================
   ABOUT — LAB PHOTO
========================================= */
.about-photo-block {
  position: relative; width: 100%;
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border-light);
  margin-bottom: 8px;
}
.about-lab-photo {
  width: 100%; height: 200px;
  object-fit: cover; display: block;
}
.about-photo-caption {
  padding: 10px 16px;
  background: var(--bg-card2);
  font-size: 0.78rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 8px;
}

/* =========================================
   SOLUTIONS — TAB PHOTO CARD
========================================= */
.tab-photo-card {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
}
.tab-photo-card img {
  width: 100%; height: 220px;
  object-fit: cover; display: block;
}
.tab-photo-card .scene-stats {
  display: flex; gap: 1px;
  border-top: 1px solid var(--border-light);
}
.tab-photo-card .scene-stat {
  flex: 1; padding: 16px 12px; text-align: center;
  border-right: 1px solid var(--border-light);
  background: var(--bg-card2);
}
.tab-photo-card .scene-stat:last-child { border-right: none; }
.tab-photo-card .scene-stat span {
  display: block; font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem; font-weight: 800;
  background: var(--gradient2); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.tab-photo-card .scene-stat small {
  display: block; font-size: 0.7rem;
  color: var(--text-muted); margin-top: 3px;
}

/* =========================================
   NEWS — FEATURED PHOTO
========================================= */
.news-card.featured-news {
  padding: 0; overflow: hidden;
}
.news-card-photo {
  width: 100%; height: 220px; overflow: hidden;
}
.news-card-photo img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: transform 0.5s ease;
}
.news-card.featured-news:hover .news-card-photo img { transform: scale(1.04); }
.news-card-body {
  padding: 24px 28px 28px;
  display: flex; flex-direction: column; gap: 12px;
}
.news-card.featured-news .news-footer { margin-top: auto; }

/* =========================================
   RESPONSIVE ADDITIONS
========================================= */
@media (max-width: 768px) {
  .hero-robot-photo-wrap { width: 100% !important; height: 300px !important; padding: 0; }
  .gallery-slider { border-radius: var(--radius); }
  .scene-strip-item { width: 220px; height: 160px; }
  .scene-strip-card { width: 210px; height: 170px; }
  .scene-card-svg { width: 58px; height: 58px; }
  .about-lab-photo { height: 200px; }
}

/* =========================================
   DEMO VIDEO SECTION — card grid + modal
========================================= */
.demo-video-section { background: var(--bg-dark); }

/* grid: 1 large + 3 small */
.video-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 20px;
  margin-top: 48px;
}
.video-card-featured {
  grid-row: span 2;
}

/* card base */
.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 18px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
  z-index: 1;
  transition: transform 0.28s, border-color 0.28s, box-shadow 0.28s;
}
.video-card:hover {
  transform: translateY(-5px);
  border-color: rgba(99,102,241,0.4);
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}

/* thumbnail */
.video-thumb {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  overflow: hidden;
  background: #000;
}
.video-thumb img,
.video-thumb video.video-preview {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  pointer-events: none; /* 让点击穿透到外层 .video-card */
}
.video-card:hover .video-thumb img { transform: scale(1.04); }

/* play overlay */
.video-play-overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.32);
  transition: background 0.25s;
  pointer-events: none; /* 让点击穿透到外层 .video-card */
}
.video-card:hover .video-play-overlay { background: rgba(0,0,0,0.18); }
.vplay-btn {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; color: #fff;
  box-shadow: 0 0 0 0 rgba(99,102,241,0.55);
  animation: pulse-ring 2.2s infinite;
  transition: transform 0.2s;
}
.video-card-featured .vplay-btn { width: 80px; height: 80px; font-size: 1.6rem; }
.video-card:hover .vplay-btn { transform: scale(1.12); }

@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(99,102,241,0.55); }
  70%  { box-shadow: 0 0 0 20px rgba(99,102,241,0); }
  100% { box-shadow: 0 0 0 0 rgba(99,102,241,0); }
}

.video-duration-badge {
  position: absolute; bottom: 10px; right: 12px;
  background: rgba(0,0,0,0.72);
  border-radius: 6px; padding: 2px 8px;
  font-size: 0.74rem; font-weight: 600; color: #fff;
}

/* meta */
.video-meta {
  padding: 18px 20px 20px;
  display: flex; flex-direction: column; gap: 7px;
}
.video-tag {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px;
  background: rgba(99,102,241,0.12);
  border: 1px solid rgba(99,102,241,0.22);
  border-radius: 20px;
  font-size: 0.72rem; color: var(--accent); font-weight: 500;
  width: fit-content;
}
.video-title {
  font-size: 0.95rem; font-weight: 600;
  color: var(--text-primary); line-height: 1.4;
  margin: 0;
}
.video-card-featured .video-title { font-size: 1.1rem; }
.video-desc {
  font-size: 0.8rem; color: var(--text-muted);
  line-height: 1.5; margin: 0;
}

.video-grid-footer {
  text-align: center;
  margin-top: 40px;
}

/* ── Hero Watch Demo button ── */
.hero-watch-btn { cursor: pointer; }

/* =========================================
   VIDEO MODAL
========================================= */
.vmodal-backdrop {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(0,0,0,0.88);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}
.vmodal-backdrop.open { opacity: 1; pointer-events: all; }

.vmodal {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  width: min(860px, 92vw);
  overflow: hidden;
  transform: scale(0.94) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  position: relative;
}
.vmodal-backdrop.open .vmodal { transform: scale(1) translateY(0); }

.vmodal-close {
  position: absolute; top: 14px; right: 16px;
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  color: #fff; font-size: 1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
  z-index: 2;
}
.vmodal-close:hover { background: rgba(255,255,255,0.18); }

.vmodal-title-bar {
  padding: 16px 56px 16px 22px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.vmodal-label {
  font-size: 0.9rem; font-weight: 600; color: var(--text-primary);
}

.vmodal-player {
  position: relative;
  width: 100%; padding-top: 56.25%;
  background: #000;
}
.vmodal-player iframe,
.vmodal-player video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: contain;
}

.vmodal-desc {
  padding: 16px 22px 20px;
  font-size: 0.82rem; color: var(--text-muted);
  line-height: 1.6; margin: 0;
}

/* responsive */
@media (max-width: 900px) {
  .video-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }
  .video-card-featured { grid-row: auto; grid-column: span 2; }
}
@media (max-width: 560px) {
  .video-grid { grid-template-columns: 1fr; }
  .video-card-featured { grid-column: auto; }
}

/* =========================================
   TESTIMONIALS — infinite marquee
========================================= */
@keyframes marquee-left  { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes marquee-right { from { transform: translateX(-50%); } to { transform: translateX(0); } }

.testimonials { background: var(--bg-dark); overflow: hidden; padding-bottom: 80px; }
.testimonials .section-header { margin-bottom: 52px; }

/* outer wrapper: clips overflow + adds edge fade mask */
.marquee-outer {
  overflow: hidden;
  position: relative;
}
.marquee-fade::before,
.marquee-fade::after {
  content: '';
  position: absolute; top: 0; bottom: 0; width: 120px; z-index: 2;
  pointer-events: none;
}
.marquee-fade::before { left: 0;  background: linear-gradient(to right, var(--bg-dark), transparent); }
.marquee-fade::after  { right: 0; background: linear-gradient(to left,  var(--bg-dark), transparent); }

/* the scrolling row */
.marquee-track {
  display: flex;
  gap: 24px;
  width: max-content;
  padding: 8px 0;
}
.marquee-left  { animation: marquee-left  38s linear infinite; }
.marquee-right { animation: marquee-right 42s linear infinite; }

/* pause on hover */
.marquee-outer:hover .marquee-track { animation-play-state: paused; }

/* individual card — horizontal pill style */
.testi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 20px 24px;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 20px;
  position: relative; overflow: hidden;
  width: 480px; height: 110px; flex-shrink: 0;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
  cursor: default;
}
.testi-card:hover {
  border-color: rgba(99,102,241,0.4);
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.32);
}
/* left: avatar + name block */
.testi-author {
  display: flex; flex-direction: column; align-items: center;
  gap: 8px; flex-shrink: 0; width: 72px;
}
.testi-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: #fff;
}
.testi-av-1  { background: linear-gradient(135deg,#667eea,#764ba2); }
.testi-av-2  { background: linear-gradient(135deg,#f093fb,#f5576c); }
.testi-av-3  { background: linear-gradient(135deg,#4facfe,#00f2fe); }
.testi-av-4  { background: linear-gradient(135deg,#f97316,#ef4444); }
.testi-av-5  { background: linear-gradient(135deg,#10b981,#059669); }
.testi-av-6  { background: linear-gradient(135deg,#8b5cf6,#6d28d9); }
.testi-av-7  { background: linear-gradient(135deg,#06b6d4,#0284c7); }
.testi-av-8  { background: linear-gradient(135deg,#f59e0b,#d97706); }
.testi-av-9  { background: linear-gradient(135deg,#ec4899,#be185d); }
.testi-av-10 { background: linear-gradient(135deg,#14b8a6,#0f766e); }
.testi-info { display: flex; flex-direction: column; gap: 2px; text-align: center; }
.testi-info strong { font-size: 0.78rem; color: var(--text-primary); white-space: nowrap; }
.testi-info span   { font-size: 0.65rem; color: var(--text-muted); line-height: 1.3; display: none; }

/* divider */
.testi-card::after {
  content: '';
  display: block;
  width: 1px; align-self: stretch;
  background: var(--border-light);
  flex-shrink: 0;
  margin: 0 4px;
}

/* right: quote text */
.testi-quote {
  font-size: 0.82rem; line-height: 1.6;
  color: var(--text-secondary);
  flex: 1;
  /* clamp to 3 lines */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* stars + tag hidden in compact mode */
.testi-stars { display: none; }
.testi-tag   { display: none; }

/* mobile */
@media (max-width: 640px) {
  .testi-card { width: 340px; height: 100px; padding: 16px 18px; gap: 14px; }
  .testi-author { width: 60px; }
  .marquee-left  { animation-duration: 28s; }
  .marquee-right { animation-duration: 32s; }
}

/* =========================================
   FAQ
========================================= */
.faq { background: var(--bg-card); }
.faq-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 64px;
  align-items: start;
}
.faq-left .section-tag { display: inline-block; margin-bottom: 12px; }
.faq-left .section-title { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 16px; }
.faq-side-desc {
  font-size: 0.9rem; color: var(--text-muted);
  line-height: 1.7; margin-bottom: 24px;
}
.faq-contact-btn { display: flex; gap: 8px; align-items: center; width: fit-content; }
.faq-stats-mini {
  display: flex; gap: 24px; margin-top: 28px;
}
.fsm-item { display: flex; flex-direction: column; gap: 3px; }
.fsm-num { font-size: 1.5rem; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.fsm-lbl { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }

/* Accordion */
.faq-list { display: flex; flex-direction: column; gap: 0; }
.faq-item { border-bottom: 1px solid var(--border-light); }
.faq-item:first-child { border-top: 1px solid var(--border-light); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  width: 100%; padding: 22px 4px;
  background: none; border: none; cursor: pointer;
  text-align: left;
  font-size: 0.97rem; font-weight: 600; color: var(--text-primary);
  transition: color 0.2s;
}
.faq-q:hover { color: var(--accent); }
.faq-q[aria-expanded="true"] { color: var(--accent); }
.faq-icon {
  font-size: 0.85rem; flex-shrink: 0;
  color: var(--text-muted);
  transition: transform 0.3s ease, color 0.2s;
}
.faq-q[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
  color: var(--accent);
}
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.38s cubic-bezier(0.4,0,0.2,1), padding 0.3s;
  padding: 0 4px;
}
.faq-a.open {
  max-height: 600px;
  padding: 0 4px 20px;
}
.faq-a p {
  font-size: 0.9rem; color: var(--text-muted);
  line-height: 1.8;
}
.faq-a strong { color: var(--text-secondary); }

@media (max-width: 900px) {
  .faq-layout { grid-template-columns: 1fr; gap: 36px; }
  .faq-left { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
  .faq-left .section-title { grid-column: span 2; }
  .faq-side-desc { grid-column: span 2; }
}



/* ── 7. Hero 图片光晕发光框 ── */
.hero-img-wrap::after {
  content: '';
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse at center, rgba(0,85,255,0.15) 0%, transparent 70%);
  border-radius: 50%;
  z-index: -1;
  animation: hero-glow-pulse 3s ease-in-out infinite alternate;
}
@keyframes hero-glow-pulse {
  from { opacity: 0.5; transform: scale(0.95); }
  to   { opacity: 1;   transform: scale(1.05); }
}

/* ── 8. Section Tag 呼吸发光 ── */
@keyframes tag-glow {
  0%, 100% { box-shadow: 0 0 0px rgba(0,212,255,0.3); }
  50%       { box-shadow: 0 0 12px rgba(0,212,255,0.5); }
}
.section-tag {
  animation: tag-glow 3s ease-in-out infinite;
}

/* ── 9. 按钮点击波纹效果 ── */
.btn {
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--rx, 50%) var(--ry, 50%), rgba(255,255,255,0.2) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.btn:active::after {
  opacity: 1;
  transition: opacity 0s;
}

/* ── 10. 导航栏品牌 Logo 悬停发光 ── */
.brand-logo-img img {
  transition: filter 0.3s ease, transform 0.3s ease;
}
.nav-brand:hover .brand-logo-img img {
  filter: drop-shadow(0 0 10px rgba(0,212,255,0.7)) brightness(1.2);
  transform: scale(1.08);
}

/* ── 11. 合作伙伴卡片 hover 发光 ── */
.partner-card:hover {
  border-color: rgba(0,212,255,0.3) !important;
  box-shadow: 0 0 20px rgba(0,85,255,0.2), 0 8px 40px rgba(0,0,0,0.4) !important;
}

/* ── 12. 视频卡片发光边框 ── */
.video-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.video-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 20px 60px rgba(0,85,255,0.3), 0 0 0 1px rgba(0,212,255,0.2) !important;
}

/* ── 13. Testimonial 跑马灯卡片悬停 ── */
.testi-card:hover {
  border-color: rgba(0,212,255,0.25) !important;
  background: rgba(13,31,56,0.95) !important;
}

/* ── 14. reveal 动画增强：不同方向淡入 ── */
/* 默认可见，加.animated后才开始动画（防止pointer-events被屏蔽）*/
/* 默认全部可见，彻底禁用隐藏动画，确保所有内容可见可点击 */
.reveal-left, .reveal-left.animated, .reveal-left.animated.visible  { opacity: 1 !important; transform: none !important; }
.reveal-right, .reveal-right.animated, .reveal-right.animated.visible { opacity: 1 !important; transform: none !important; }
.reveal-scale, .reveal-scale.animated, .reveal-scale.animated.visible { opacity: 1 !important; transform: none !important; }

/* ── 15. Hero 首屏专用进场动画（纯CSS，不依赖JS） ── */
@keyframes hero-slide-left {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes hero-slide-right {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
.hero-animate-left  {
  animation: hero-slide-left  0.9s cubic-bezier(.4,0,.2,1) 0.2s both;
}
.hero-animate-right {
  animation: hero-slide-right 0.9s cubic-bezier(.4,0,.2,1) 0.4s both;
}

/* ── 16. FAQ 问答条目悬停高亮 ── */
.faq-item:hover {
  border-color: rgba(0,85,255,0.3) !important;
  background: rgba(10,22,40,0.9) !important;
}


/* ========================================================
   TRISTONES ENHANCEMENTS v2 — 2026-03-26
   Tech Compare Table | Media Coverage | Product Finder |
   Timeline | Chatbot Widget
======================================================== */

/* ── TECH COMPARISON TABLE ── */
.tech-compare-wrap {
  margin-top: 72px;
  text-align: center;
}
.tech-compare-title {
  font-size: 1.5rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.tech-compare-sub {
  color: var(--text-secondary); font-size: 0.95rem;
  margin-bottom: 36px;
}
.tech-compare-table-outer {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.tech-compare-table {
  width: 100%; min-width: 680px;
  border-collapse: collapse;
}
.tech-compare-table thead tr {
  background: rgba(0,85,255,0.12);
  border-bottom: 1px solid var(--border);
}
.tech-compare-table th {
  padding: 16px 14px; font-size: 0.82rem;
  font-weight: 600; text-align: center;
  color: var(--text-secondary); white-space: nowrap;
}
.tech-compare-table th.tc-feature {
  text-align: left; color: var(--text-primary);
}
.tech-compare-table th.tc-us {
  color: var(--accent);
  background: rgba(0,212,255,0.07);
}
.tech-compare-table tbody tr {
  border-bottom: 1px solid var(--border-light);
  transition: background 0.2s;
}
.tech-compare-table tbody tr:hover { background: rgba(255,255,255,0.03); }
.tech-compare-table td {
  padding: 14px; font-size: 0.85rem;
  text-align: center; color: var(--text-secondary);
}
.tc-feature-name {
  text-align: left !important;
  color: var(--text-primary) !important;
  font-weight: 500;
}
.tc-feature-name i { margin-right: 8px; color: var(--accent); font-size: 0.8rem; }
.tc-us { background: rgba(0,212,255,0.04); }
.tc-yes { color: #22c55e !important; font-weight: 600; }
.tc-yes i { color: #22c55e; }
.tc-partial { color: #f59e0b !important; }
.tc-partial i { color: #f59e0b; }
.tc-no { color: var(--text-muted) !important; }
.tc-no i { color: #ef4444; }
.tc-logo-img { width: 22px; height: 22px; object-fit: contain; vertical-align: middle; margin-right: 6px; }
.tc-competitor { color: var(--text-muted) !important; }
.tc-legend {
  display: flex; gap: 24px; justify-content: center;
  margin-top: 20px; flex-wrap: wrap;
  font-size: 0.82rem;
}
.tc-leg-yes { color: #22c55e; }
.tc-leg-partial { color: #f59e0b; }
.tc-leg-no { color: var(--text-muted); }
.tc-leg-yes i, .tc-leg-partial i, .tc-leg-no i { margin-right: 4px; }

/* ── MEDIA COVERAGE SECTION ── */
.media-section { background: var(--bg-dark); }
.media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.media-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  display: flex; flex-direction: column; gap: 16px;
}
.media-card:hover {
  border-color: rgba(0,212,255,0.35);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.media-pub {
  display: flex; align-items: center; gap: 10px;
}
.media-pub-icon {
  width: 38px; height: 38px;
  border-radius: 8px;
  background: rgba(0,85,255,0.15);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 1rem; flex-shrink: 0;
}
.media-pub-name {
  font-size: 0.95rem; font-weight: 700;
  color: var(--text-primary);
}
.media-quote {
  font-size: 0.88rem; color: var(--text-secondary);
  line-height: 1.7; flex: 1;
  font-style: italic;
  border-left: 3px solid rgba(0,85,255,0.3);
  padding-left: 14px;
}
.media-meta {
  display: flex; align-items: center;
  justify-content: space-between;
  font-size: 0.78rem; color: var(--text-muted);
}
.media-section-tag {
  background: rgba(0,85,255,0.1);
  color: var(--accent);
  padding: 3px 10px; border-radius: 20px;
  font-size: 0.74rem; font-weight: 500;
}
.media-date { color: var(--text-muted); }
.media-logos-bar {
  display: flex; align-items: center;
  gap: 16px; flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
}
.media-logos-label {
  font-size: 0.78rem; color: var(--text-muted);
  white-space: nowrap; margin-right: 8px;
  font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em;
}
.media-logos-row {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center; flex: 1;
}
.media-logo-pill {
  display: flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 0.8rem; color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
}
.media-logo-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,212,255,0.06);
}
.media-logo-pill i { font-size: 0.8rem; }
@media (max-width: 900px) { .media-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .media-grid { grid-template-columns: 1fr; } }

/* ── PRODUCT FINDER ── */
.finder-section { background: var(--bg-dark); }
.finder-widget {
  max-width: 820px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 48px;
  position: relative;
  overflow: hidden;
}
.finder-widget::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient);
  border-radius: 24px 24px 0 0;
}
.finder-steps {
  display: flex; align-items: center;
  justify-content: center;
  margin-bottom: 40px;
}
.finder-step-dot {
  display: flex; flex-direction: column;
  align-items: center; gap: 6px;
}
.finder-step-dot span {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-card2);
  transition: var(--transition);
}
.finder-step-dot.active span {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}
.finder-step-dot.done span {
  border-color: #22c55e;
  background: #22c55e;
  color: #fff;
}
.finder-step-dot em {
  font-size: 0.72rem; font-style: normal;
  color: var(--text-muted); white-space: nowrap;
}
.finder-step-dot.active em { color: var(--text-primary); }
.finder-step-line {
  flex: 1; max-width: 80px;
  height: 2px;
  background: var(--border);
  margin: 0 8px; margin-bottom: 22px;
}
.finder-q {
  font-size: 1.25rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 28px; text-align: center;
}
.finder-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.finder-opt {
  display: flex; flex-direction: column;
  align-items: flex-start; gap: 6px;
  padding: 20px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}
.finder-opt i { font-size: 1.4rem; color: var(--accent); margin-bottom: 4px; }
.finder-opt strong { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); display: block; }
.finder-opt em { font-size: 0.8rem; font-style: normal; color: var(--text-secondary); }
.finder-opt:hover, .finder-opt.selected {
  border-color: var(--primary);
  background: rgba(0,85,255,0.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.finder-opt.selected { border-color: var(--accent); }
.finder-panel { display: none; }
.finder-panel.active { display: block; }
.finder-result { display: none; }
.finder-result.active { display: block; }
.finder-result-inner {
  display: flex; align-items: flex-start; gap: 28px;
  background: rgba(0,85,255,0.07);
  border: 1px solid rgba(0,85,255,0.25);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.finder-result-icon {
  width: 72px; height: 72px; flex-shrink: 0;
  border-radius: var(--radius);
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: #fff;
}
.finder-result-tag {
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--accent); margin-bottom: 8px;
}
.finder-result-content h3 {
  font-size: 1.5rem; font-weight: 800;
  color: var(--text-primary); margin-bottom: 10px;
}
.finder-result-content p {
  font-size: 0.9rem; color: var(--text-secondary);
  margin-bottom: 20px;
}
.finder-result-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.finder-nav {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-top: 32px;
}
.finder-progress-dots { display: flex; gap: 8px; }
.fp-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--border);
  transition: background 0.3s;
}
.fp-dot.active { background: var(--primary); }
.finder-back { min-width: 100px; }
@media (max-width: 640px) {
  .finder-widget { padding: 28px 20px; }
  .finder-options { grid-template-columns: 1fr; }
  .finder-result-inner { flex-direction: column; }
}

/* ── TIMELINE (horizontal) ── */
.timeline-wrap { margin-top: 72px; }
.timeline-title {
  font-size: 1.5rem; font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 56px;
}
.timeline-title i { color: var(--accent); margin-right: 10px; }

/* shared badge/year styles */
.tl-year { font-size: 0.72rem; font-weight: 700; color: var(--accent); margin-bottom: 5px; text-transform: uppercase; letter-spacing: 0.06em; }
.tl-badge { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 7px; }
.tl-founded  { background: rgba(124,58,237,0.15); color: #a78bfa; }
.tl-research { background: rgba(0,85,255,0.15); color: #93c5fd; }
.tl-prototype{ background: rgba(249,115,22,0.15); color: #fdba74; }
.tl-patent   { background: rgba(251,191,36,0.15); color: #fde68a; }
.tl-granted  { background: rgba(34,197,94,0.15); color: #86efac; }
.tl-current  { background: rgba(0,212,255,0.15); color: var(--accent); }
.tl-roadmap  { background: rgba(255,255,255,0.05); color: var(--text-muted); border: 1px dashed var(--border); }

/* ══════════════════════════════════════════════════════
   TIMELINE — 三段式精确对齐方案
   每个节点分为：
     .htl-top   (固定高度 220px) — 上方卡片区
     .htl-axis  (固定高度  28px) — 轴心区：dot + 连线
     .htl-bot   (固定高度 220px) — 下方卡片区
   水平轴线 = track 顶部 220px 处
══════════════════════════════════════════════════════ */

/* 滚动容器 */
.htl { width: 100%; overflow-x: auto; padding: 8px 0 24px; }

/* 轨道 — 不再用 align-items:center，改为自然流 */
.htl-track {
  position: relative;
  display: flex;
  align-items: stretch;       /* 让每个节点撑满同等高度 */
  justify-content: space-between;
  min-width: 1100px;
  padding: 0 32px;
}

/* 水平轴线 — top 精确 = .htl-top 高度 + .htl-axis 高度/2 = 220 + 14 = 234px */
.htl-line {
  position: absolute;
  top: 234px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    rgba(0,85,255,0.15),
    rgba(0,85,255,0.55) 18%,
    var(--accent) 50%,
    rgba(0,85,255,0.55) 82%,
    rgba(0,85,255,0.15));
  z-index: 0;
}

/* ── 节点容器 ── */
.htl-node {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  z-index: 1;
  min-width: 0;
}

/* 上方内容槽（固定高度，内容底部对齐） */
.htl-top {
  height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;   /* 卡片/年份 靠下对齐到轴线 */
  align-items: center;
  padding-bottom: 0;
  width: 100%;
}
/* 下方节点（年份+stem在上方槽）：年份靠顶，stem撑满到dot */
.htl-top-pin {
  height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start; /* 年份贴顶 */
  align-items: center;
  padding-top: 8px;
  width: 100%;
}

/* 轴心区（dot + 可选横向连线） */
.htl-axis {
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 100%;
}

/* 下方内容槽（固定高度，内容顶部对齐） */
.htl-bot {
  height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;  /* 卡片/年份 靠上对齐到轴线 */
  align-items: center;
  padding-top: 0;
  width: 100%;
}
/* 上方节点的下方槽只有年份，让它靠顶显示 */
.htl-bot-pin {
  height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding-top: 8px;
  width: 100%;
}

/* ── stem（上下连线）── */
.htl-stem-up {
  width: 2px;
  flex: 1;                      /* 撑满 htl-top 剩余空间 */
  min-height: 40px;
  background: linear-gradient(180deg, rgba(0,212,255,0.1), rgba(0,212,255,0.55));
}
.htl-stem-down {
  width: 2px;
  flex: 1;                      /* 撑满年份到dot之间 */
  min-height: 40px;
  background: linear-gradient(180deg, rgba(0,212,255,0.55), rgba(0,212,255,0.1));
}
.htl-stem-up-future,
.htl-stem-down-future { opacity: 0.3; }
.htl-stem-up-current {
  background: linear-gradient(180deg, rgba(0,212,255,0.15), rgba(0,212,255,0.9));
  box-shadow: 0 0 6px rgba(0,212,255,0.35);
}
.htl-stem-down-current {
  background: linear-gradient(180deg, rgba(0,212,255,0.9), rgba(0,212,255,0.15));
  box-shadow: 0 0 6px rgba(0,212,255,0.35);
}

/* ── dot ── */
.htl-dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg-card2);
  border: 2px solid var(--accent);
  box-shadow: 0 0 10px rgba(0,212,255,0.4);
  flex-shrink: 0;
  z-index: 2;
}
.htl-dot-current {
  background: var(--accent);
  width: 18px; height: 18px;
  box-shadow: 0 0 0 4px rgba(0,212,255,0.2), 0 0 18px rgba(0,212,255,0.6);
  animation: tl-pulse 2s ease-in-out infinite;
}
.htl-dot-future {
  background: var(--bg-card2);
  border: 2px dashed var(--border);
  box-shadow: none;
  opacity: 0.55;
}
@keyframes tl-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(0,212,255,0.25), 0 0 14px rgba(0,212,255,0.4); }
  50%       { box-shadow: 0 0 0 8px rgba(0,212,255,0.1), 0 0 28px rgba(0,212,255,0.5); }
}

/* ── 年份标签 ── */
.htl-year-pin {
  font-size: 0.72rem; font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
  white-space: nowrap;
  margin: 8px 0 4px;
}
.htl-pin-current {
  color: var(--accent); font-size: 0.78rem;
  text-shadow: 0 0 8px rgba(0,212,255,0.5);
}
.htl-pin-future { color: var(--text-muted); opacity: 0.6; }

/* ── label card ── */
.htl-label {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 13px;
  padding: 15px 14px 13px;
  width: 155px;
  transition: var(--transition);
  text-align: left;
}
.htl-label:hover {
  border-color: rgba(0,85,255,0.5);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.htl-label h4 {
  font-size: 0.83rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px; line-height: 1.4;
}
.htl-label p {
  font-size: 0.73rem; color: var(--text-secondary);
  line-height: 1.65; margin: 0 0 10px;
}
.htl-label-future { opacity: 0.6; border-style: dashed; }

/* 上方节点的卡片 margin（离 stem 底端的间隙） */
.htl-top .htl-label { margin-bottom: 0; }

/* 下方节点的卡片 margin（离 stem 顶端的间隙） */
.htl-bot .htl-label { margin-top: 0; }

/* ── stat row ── */
.htl-stat-row {
  display: flex; align-items: center;
  gap: 8px; margin-top: 2px; flex-wrap: wrap;
}
.htl-stat {
  font-size: 1.35rem; font-weight: 800;
  color: var(--accent); line-height: 1; letter-spacing: -0.01em;
}
.htl-stat-unit {
  font-size: 0.68rem; font-weight: 600;
  color: var(--text-muted); letter-spacing: 0.02em;
}
.htl-stat-muted { color: var(--text-muted); font-size: 1.1rem; }
.htl-stat-row-muted .htl-stat { color: var(--text-muted); }

/* ── tag pill ── */
.htl-tag {
  font-size: 0.62rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  padding: 2px 7px; border-radius: 30px;
  background: rgba(0,85,255,0.12); color: #93c5fd;
  border: 1px solid rgba(0,85,255,0.2); white-space: nowrap;
}
.htl-tag-live {
  background: rgba(0,212,255,0.12); color: var(--accent);
  border-color: rgba(0,212,255,0.3);
  animation: tag-blink 2.5s ease-in-out infinite;
}
.htl-tag-future {
  background: rgba(255,255,255,0.04);
  color: var(--text-muted); border-color: var(--border);
}
@keyframes tag-blink {
  0%, 100% { opacity: 1; } 50% { opacity: 0.6; }
}

/* ── Now / current 节点特殊样式 ── */
.htl-label-now {
  border-color: rgba(0,212,255,0.45) !important;
  background: linear-gradient(135deg, rgba(0,212,255,0.08), rgba(0,85,255,0.05)) !important;
  box-shadow: 0 0 28px rgba(0,212,255,0.18), 0 4px 20px rgba(0,0,0,0.35) !important;
  width: 172px !important;
}
.htl-label-now h4 { color: #e0f7ff; }
.htl-label-now .htl-stat { font-size: 1.5rem; }

/* ── mobile: 竖向排列 ── */
@media (max-width: 900px) {
  .htl { overflow-x: visible; padding: 0; }
  .htl-track {
    flex-direction: column;
    align-items: flex-start;
    min-width: unset;
    padding: 0 0 0 28px;
  }
  .htl-line {
    top: 0; bottom: 0; left: 13px; right: auto;
    width: 2px; height: 100%;
    background: linear-gradient(180deg, rgba(0,85,255,0.3), var(--accent), rgba(0,85,255,0.3));
  }
  .htl-node {
    flex-direction: row !important;
    align-items: flex-start;
    width: 100%;
    height: auto !important;
    margin-bottom: 28px;
    gap: 12px;
  }
  .htl-top, .htl-bot {
    display: none !important;
  }
  .htl-axis {
    height: auto !important;
    width: auto !important;
    flex-direction: column;
    padding-top: 4px;
  }
  .htl-label {
    width: auto !important; flex: 1;
    display: block !important;
    margin: 0 !important;
  }
  .htl-year-pin { display: none !important; }
  .htl-stem-up, .htl-stem-down { display: none !important; }
}

/* ── BACK TO TOP ── */
.back-to-top {
  position: fixed;
  bottom: 100px; right: 32px; /* 不与 chatbot 重叠 */
  z-index: 998;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  opacity: 0; visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s,
              background 0.2s, color 0.2s, border-color 0.2s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.back-to-top.visible {
  opacity: 1; visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-3px);
}
@media (max-width: 480px) {
  .back-to-top { bottom: 90px; right: 16px; }
}

/* ── CHATBOT WIDGET ── */
.chatbot-widget {
  position: fixed;
  bottom: 32px; right: 32px;
  z-index: 9999;
  font-family: "Inter", sans-serif;
}
.chatbot-toggle {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--gradient);
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: #fff;
  box-shadow: 0 8px 32px rgba(0,85,255,0.45);
  transition: all 0.3s cubic-bezier(.4,0,.2,1);
  position: relative;
}
.chatbot-toggle:hover { transform: scale(1.1); }
.chatbot-badge {
  position: absolute; top: -2px; right: -2px;
  width: 20px; height: 20px; border-radius: 50%;
  background: #ef4444; color: #fff;
  font-size: 0.7rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--bg-dark);
  animation: chatbot-badge-pulse 2s ease infinite;
}
@keyframes chatbot-badge-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}
.chatbot-panel {
  display: none;
  position: absolute;
  bottom: 76px; right: 0;
  width: 340px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
}
.chatbot-panel.open {
  display: flex; flex-direction: column;
  animation: chatbot-slide-in 0.3s cubic-bezier(.4,0,.2,1);
}
@keyframes chatbot-slide-in {
  from { opacity: 0; transform: translateY(16px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.chatbot-header {
  background: linear-gradient(135deg, #0033cc, #0055ff);
  padding: 16px 18px;
  display: flex; align-items: center;
  justify-content: space-between;
}
.chatbot-header-info { display: flex; align-items: center; gap: 12px; }
.chatbot-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem;
}
.chatbot-name { font-size: 0.9rem; font-weight: 700; color: #fff; }
.chatbot-status {
  font-size: 0.72rem; color: rgba(255,255,255,0.7);
  display: flex; align-items: center; gap: 4px;
}
.chatbot-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #22c55e; display: inline-block;
  animation: chatbot-badge-pulse 1.5s ease infinite;
}
.chatbot-header-close {
  background: none; border: none;
  color: rgba(255,255,255,0.7);
  cursor: pointer; font-size: 1.1rem;
  padding: 4px; transition: color 0.2s;
}
.chatbot-header-close:hover { color: #fff; }
.chatbot-messages {
  padding: 16px; flex: 1;
  max-height: 200px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 10px;
}
.chat-msg { display: flex; }
.chat-bubble {
  background: var(--bg-card2);
  border: 1px solid var(--border-light);
  border-radius: 14px 14px 14px 4px;
  padding: 12px 14px;
  font-size: 0.85rem; color: var(--text-secondary);
  line-height: 1.6; max-width: 90%;
}
.chat-bubble .chat-link { color: var(--accent); text-decoration: underline; }
.chat-msg.chat-user { justify-content: flex-end; }
.chat-msg.chat-user .chat-bubble {
  background: rgba(0,85,255,0.2);
  border-color: rgba(0,85,255,0.3);
  border-radius: 14px 14px 4px 14px;
  color: var(--text-primary);
}
.chatbot-quick-btns {
  padding: 0 14px 14px;
  display: flex; flex-direction: column; gap: 6px;
}
.chat-quick-btn {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 8px 14px;
  font-size: 0.8rem; color: var(--text-secondary);
  cursor: pointer; text-align: left;
  transition: var(--transition);
}
.chat-quick-btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(0,212,255,0.06); }
.chatbot-input-row {
  padding: 12px 14px 16px;
  border-top: 1px solid var(--border-light);
}
.chatbot-contact-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 10px;
  background: var(--gradient);
  color: #fff; border-radius: 10px;
  font-size: 0.85rem; font-weight: 600;
  transition: var(--transition);
}
.chatbot-contact-btn:hover { opacity: 0.9; transform: translateY(-1px); }
@media (max-width: 480px) {
  .chatbot-widget { bottom: 20px; right: 16px; }
  .chatbot-panel { width: calc(100vw - 32px); right: 0; }
}