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

:root {
  --primary: #4F6EF7;
  --primary-dark: #3A56E0;
  --secondary: #00D4AA;
  --accent: #FF6B35;
  --dark: #0D1117;
  --dark-2: #161B22;
  --dark-3: #21262D;
  --dark-4: #30363D;
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --text-muted: #6E7681;
  --border: rgba(255,255,255,0.08);
  --sidebar-w: 240px;
}

html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--dark); color: var(--text-primary);
  line-height: 1.6; overflow-x: hidden;
}
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-2); }
::-webkit-scrollbar-thumb { background: var(--dark-4); border-radius: 3px; }
a { text-decoration: none; color: inherit; }

/* ===== TOP NAV ===== */
nav#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  display: flex; align-items: center; gap: 0;
  padding: 0 5%; height: 64px;
  background: rgba(13,17,23,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px; flex-shrink: 0;
  font-size: 1.1rem; font-weight: 700; color: var(--text-primary);
}
.nav-logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; font-weight: 800; color: #fff;
}
.nav-links { display: flex; align-items: center; gap: 4px; flex: 1; padding: 0 20px; overflow: visible; }
.nav-links a { color: var(--text-secondary); font-size: 0.875rem; transition: color 0.2s; white-space: nowrap; padding: 6px 12px; border-radius: 8px; }
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); background: rgba(255,255,255,.05); }
.nav-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

/* ══════════════════════════════════════════
   MEGA MENU — 完全重构版
   定位策略：panel 用 position:fixed，JS 动态计算 left，
   保证永不溢出屏幕边缘
   backdrop：pointer-events:none（只遮罩，不拦截点击），
   JS 监听 document 点击来关闭
   ══════════════════════════════════════════ */

/* ── 触发项 ── */
.nav-mega { position: relative; }
.nav-mega-trigger {
  display: inline-flex; align-items: center; gap: 5px;
  color: var(--text-secondary); font-size: 0.875rem;
  padding: 6px 12px; border-radius: 8px; cursor: pointer;
  white-space: nowrap; transition: color .15s, background .15s; user-select: none;
}
.nav-mega-trigger:hover,
.nav-mega.open .nav-mega-trigger {
  color: var(--text-primary); background: rgba(255,255,255,.06);
}
.nav-mega-trigger .caret {
  font-size: 8px; opacity: .45; transition: transform .2s; margin-top: 1px;
}
.nav-mega.open .nav-mega-trigger .caret { transform: rotate(180deg); opacity: .8; }

/* ── 面板容器：fixed 定位，JS 控制 left/top ── */
.nav-mega-panel {
  position: fixed;
  top: 68px;                          /* navbar 高度 64px + 4px 间距 */
  left: 0;                            /* JS 会覆盖这个值 */
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  z-index: 9100;
}
.nav-mega.open .nav-mega-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

/* 面板内容容器 — 共用基础样式 */
.mega-panel-inner {
  background: rgba(13,17,30,.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px;
  box-shadow:
    0 8px 32px rgba(0,0,0,.45),
    0 24px 64px rgba(0,0,0,.35),
    0 0 0 1px rgba(102,126,234,.12) inset;
  padding: 20px;
  /* 箭头小三角 */
  position: relative;
}
.mega-panel-inner::before {
  content: '';
  position: absolute;
  top: -6px; left: 50%; transform: translateX(-50%);
  width: 12px; height: 6px;
  background: rgba(13,17,30,.97);
  clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
  border-left: 1px solid rgba(255,255,255,.1);
  border-right: 1px solid rgba(255,255,255,.1);
}

/* 「解决方案」面板 — 宽 620px */
.mega-solution { width: 620px; }

/* 「产品功能」面板 — 宽 780px（4列） */
.mega-product { width: 780px; }

/* ── 面板头部 ── */
.mega-header {
  font-size: 10px; font-weight: 700;
  color: rgba(255,255,255,.22);
  text-transform: uppercase; letter-spacing: .12em;
  margin-bottom: 12px; padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex; justify-content: space-between; align-items: center;
}
.mega-header a {
  font-size: 11px; color: #7b9ff9; font-weight: 600;
  text-transform: none; letter-spacing: 0;
  transition: color .15s;
}
.mega-header a:hover { color: #a5b9fb; }

/* ── 行业网格 2×3 ── */
.mega-industry-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px;
  margin-bottom: 14px;
}
.mega-industry-item {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 10px; border-radius: 10px;
  transition: background .12s, border-color .12s;
  text-decoration: none; border: 1px solid transparent;
  cursor: pointer;
}
.mega-industry-item:hover {
  background: rgba(255,255,255,.055);
  border-color: rgba(255,255,255,.09);
}
.mega-ind-icon {
  width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.mega-ind-title { font-size: 12.5px; font-weight: 600; color: #e2e8f0; line-height: 1.2; }
.mega-ind-sub   { font-size: 10.5px; color: rgba(255,255,255,.32); margin-top: 2px; }

/* ── 解决方案 CTA 横条 ── */
.mega-cta-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: linear-gradient(135deg, rgba(102,126,234,.1), rgba(16,185,129,.07));
  border: 1px solid rgba(102,126,234,.18); border-radius: 10px;
  padding: 10px 14px;
}
.mega-cta-bar-text { font-size: 12px; color: rgba(255,255,255,.65); }
.mega-cta-bar-text strong { color: #fff; }
.mega-cta-bar-btn {
  display: inline-flex; align-items: center; gap: 5px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff; padding: 6px 14px; border-radius: 8px;
  font-size: 12px; font-weight: 600; white-space: nowrap;
  transition: opacity .15s, transform .15s; flex-shrink: 0;
}
.mega-cta-bar-btn:hover { opacity: .88; transform: translateY(-1px); }

/* ── 产品功能四列 ── */
.mega-product-cols { display: grid; grid-template-columns: repeat(4,1fr); gap: 4px; }
.mega-col-title {
  font-size: 9.5px; font-weight: 700; color: rgba(255,255,255,.28);
  text-transform: uppercase; letter-spacing: .1em;
  padding: 2px 8px 6px; margin-bottom: 2px;
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.mega-product-item {
  display: flex; align-items: flex-start; gap: 9px;
  padding: 9px 8px; border-radius: 9px;
  transition: background .12s, border-color .12s;
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
}
.mega-product-item:hover {
  background: rgba(255,255,255,.05);
  border-color: rgba(255,255,255,.08);
}
.mega-product-item.featured {
  background: rgba(102,126,234,.07);
  border-color: rgba(102,126,234,.16);
}
.mega-product-item.featured:hover {
  background: rgba(102,126,234,.13);
  border-color: rgba(102,126,234,.28);
}
.mega-prod-icon {
  width: 30px; height: 30px; border-radius: 8px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 15px;
}
.mega-prod-title {
  font-size: 12px; font-weight: 700; color: #e2e8f0; line-height: 1.25;
}
.mega-prod-desc {
  font-size: 10.5px; color: rgba(255,255,255,.32); margin-top: 2px; line-height: 1.45;
}
.mega-new-badge {
  display: inline-block; font-size: 8px; font-weight: 800;
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff; padding: 1px 4px; border-radius: 4px; margin-left: 4px;
  vertical-align: middle; letter-spacing: .03em;
}

/* ── 遮罩：纯半透明暗色蒙层，不模糊背景，不拦截点击 ── */
.mega-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.18);
  /* 不用 backdrop-filter，只做视觉层次感，不把全屏内容模糊 */
  z-index: 9050;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .2s ease, visibility .2s;
}
.mega-backdrop.active {
  opacity: 1; visibility: visible;
  /* pointer-events 故意保持 none：由 document click 监听关闭，不拦截面板内点击 */
}

/* ===== BUTTONS ===== */
.btn-outline {
  padding: 7px 18px; border-radius: 8px;
  border: 1px solid rgba(79,110,247,0.45); color: var(--primary);
  background: transparent; font-size: 0.875rem; cursor: pointer;
  transition: all 0.2s; display: inline-block;
}
.btn-outline:hover { background: rgba(79,110,247,0.1); }
.btn-primary {
  padding: 7px 18px; border-radius: 8px;
  background: var(--primary); color: #fff;
  font-size: 0.875rem; cursor: pointer; font-weight: 600;
  border: none; transition: all 0.2s; display: inline-block;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 18px rgba(79,110,247,0.4); }
.btn-hero-primary {
  padding: 13px 32px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #6B4EFF); color: #fff;
  font-size: 1rem; font-weight: 700; border: none; cursor: pointer;
  display: inline-block; transition: all 0.3s;
  box-shadow: 0 4px 28px rgba(79,110,247,0.35);
}
.btn-hero-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 36px rgba(79,110,247,0.5); }
.btn-hero-secondary {
  padding: 13px 32px; border-radius: 10px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  color: var(--text-primary); font-size: 1rem; font-weight: 600;
  cursor: pointer; display: inline-block; transition: all 0.3s;
}
.btn-hero-secondary:hover { background: rgba(255,255,255,0.1); }
.btn-sm {
  padding: 5px 14px; border-radius: 6px; font-size: 0.8rem;
  font-weight: 600; cursor: pointer; border: none;
  display: inline-block; transition: all 0.2s;
}
.btn-sm-primary { background: var(--primary); color: #fff; }
.btn-sm-primary:hover { background: var(--primary-dark); }
.btn-sm-ghost { background: rgba(255,255,255,0.05); color: var(--text-secondary); border: 1px solid var(--border); }
.btn-sm-ghost:hover { color: var(--text-primary); border-color: rgba(255,255,255,0.2); }
.btn-danger { background: rgba(248,81,73,0.15); color: #F85149; border: 1px solid rgba(248,81,73,0.3); }
.btn-danger:hover { background: rgba(248,81,73,0.25); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; padding: 120px 5% 80px;
  background: linear-gradient(135deg, #0D1117 0%, #161B22 50%, #0D1B2A 100%);
  display: flex; align-items: center; justify-content: center;
  text-align: center; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(ellipse at 60% 40%, rgba(79,110,247,0.12) 0%, transparent 50%),
              radial-gradient(ellipse at 30% 70%, rgba(0,212,170,0.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 50px 50px; pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 860px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 16px; border-radius: 100px;
  background: rgba(79,110,247,0.15); border: 1px solid rgba(79,110,247,0.3);
  color: #7B9FF9; font-size: 0.82rem; font-weight: 500; margin-bottom: 24px;
}
.hero-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--secondary); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.3)} }
.hero-title { font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 800; line-height: 1.18; margin-bottom: 14px; letter-spacing: -0.02em; }
.highlight { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 10px; }
.hero-desc { font-size: 0.95rem; color: var(--text-muted); max-width: 580px; margin: 0 auto 32px; line-height: 1.8; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 32px; }
.tag { padding: 4px 13px; border-radius: 6px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); font-size: 0.8rem; color: var(--text-secondary); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; align-items: center; }
.hero-note { margin-top: 14px; font-size: 0.8rem; color: var(--text-muted); }

/* ===== STATS ===== */
.stats { background: var(--dark-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 50px 5%; }
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); max-width: 1100px; margin: 0 auto; }
.stat-item { text-align: center; padding: 30px 16px; position: relative; }
.stat-item::after { content: ''; position: absolute; right: 0; top: 20%; bottom: 20%; width: 1px; background: var(--border); }
.stat-item:last-child::after { display: none; }
.stat-number { font-size: clamp(2rem, 3.5vw, 2.8rem); font-weight: 800; background: linear-gradient(135deg, var(--text-primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 6px; }
.stat-label { font-size: 0.88rem; color: var(--text-secondary); }
.stat-sublabel { font-size: 0.75rem; color: var(--text-muted); margin-top: 3px; }

/* ===== SECTION COMMON ===== */
section { padding: 90px 5%; }
.section-tag { display: inline-block; padding: 3px 13px; border-radius: 100px; background: rgba(79,110,247,0.12); border: 1px solid rgba(79,110,247,0.25); color: #7B9FF9; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 14px; }
.section-title { font-size: clamp(1.7rem, 3.5vw, 2.6rem); font-weight: 800; line-height: 1.25; margin-bottom: 14px; letter-spacing: -0.02em; }
.section-desc { color: var(--text-secondary); font-size: 0.95rem; max-width: 520px; line-height: 1.8; }
.center { text-align: center; }
.center .section-desc { margin: 0 auto; }

/* ===== FEATURES ===== */
.features { background: var(--dark); }
.features-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; max-width: 1100px; margin: 50px auto 0; }
.feature-card { background: linear-gradient(145deg, rgba(79,110,247,0.07), rgba(0,212,170,0.04)); border: 1px solid var(--border); border-radius: 14px; padding: 30px; transition: all 0.3s; position: relative; overflow: hidden; }
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--primary), var(--secondary)); opacity: 0; transition: opacity 0.3s; }
.feature-card:hover { border-color: rgba(79,110,247,0.3); transform: translateY(-4px); box-shadow: 0 16px 50px rgba(0,0,0,0.3); }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 52px; height: 52px; border-radius: 13px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: 18px; }
.icon-blue { background: rgba(79,110,247,0.15); }
.icon-green { background: rgba(0,212,170,0.12); }
.icon-orange { background: rgba(255,107,53,0.12); }
.icon-purple { background: rgba(167,139,250,0.12); }
.feature-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.feature-desc { color: var(--text-secondary); font-size: 0.875rem; line-height: 1.75; margin-bottom: 16px; }
.feature-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.feature-tag { padding: 2px 9px; border-radius: 4px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); font-size: 0.73rem; color: var(--text-muted); }

/* ===== HOW ===== */
.how-it-works { background: var(--dark-2); }
.steps-container { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; max-width: 900px; margin: 50px auto 0; position: relative; }
.steps-container::before { content: ''; position: absolute; top: 42px; left: calc(16.67% + 24px); right: calc(16.67% + 24px); height: 2px; background: linear-gradient(90deg, var(--primary), var(--secondary)); z-index: 0; }
.step { text-align: center; position: relative; z-index: 1; }
.step-num { width: 52px; height: 52px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; font-weight: 800; color: #fff; margin: 0 auto 20px; box-shadow: 0 0 0 7px rgba(79,110,247,0.1); }
.step-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.step-desc { color: var(--text-secondary); font-size: 0.86rem; line-height: 1.7; }

/* ===== CTA ===== */
.cta-section { background: var(--dark); padding: 110px 5%; text-align: center; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 600px; height: 400px; background: radial-gradient(ellipse, rgba(79,110,247,0.14), transparent 70%); pointer-events: none; }
.cta-content { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; }
.cta-title { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 800; margin-bottom: 14px; }
.cta-desc { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 36px; line-height: 1.8; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-note { margin-top: 18px; font-size: 0.8rem; color: var(--text-muted); }

/* ===== FOOTER ===== */
footer { background: var(--dark-2); border-top: 1px solid var(--border); padding: 55px 5% 28px; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 50px; margin-bottom: 44px; }
.footer-brand-desc { color: var(--text-muted); font-size: 0.85rem; line-height: 1.8; margin-top: 10px; max-width: 240px; }
.footer-col h4 { font-size: 0.85rem; font-weight: 700; margin-bottom: 14px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 9px; }
.footer-col ul li a { color: var(--text-muted); font-size: 0.83rem; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--text-primary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 26px; border-top: 1px solid var(--border); flex-wrap: wrap; gap: 10px; }
.footer-bottom p { color: var(--text-muted); font-size: 0.8rem; }
.footer-bottom-links { display: flex; gap: 18px; }
.footer-bottom-links a { color: var(--text-muted); font-size: 0.8rem; transition: color 0.2s; }
.footer-bottom-links a:hover { color: var(--text-primary); }

/* ===== AUTH PAGES ===== */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%); padding: 80px 20px 40px; }
.auth-card { background: var(--dark-2); border: 1px solid var(--border); border-radius: 18px; padding: 44px; width: 100%; max-width: 440px; }
.auth-logo { display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 1.1rem; font-weight: 700; margin-bottom: 28px; }
.auth-title { font-size: 1.5rem; font-weight: 800; text-align: center; margin-bottom: 6px; }
.auth-subtitle { text-align: center; color: var(--text-muted); font-size: 0.88rem; margin-bottom: 30px; }
.tabs { display: flex; gap: 0; margin-bottom: 28px; background: var(--dark-3); border-radius: 9px; padding: 4px; }
.tab-btn { flex: 1; padding: 8px; border-radius: 7px; border: none; background: transparent; color: var(--text-muted); font-size: 0.875rem; font-weight: 500; cursor: pointer; transition: all 0.2s; }
.tab-btn.active { background: var(--dark-4); color: var(--text-primary); font-weight: 600; }
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 0.83rem; color: var(--text-secondary); margin-bottom: 7px; font-weight: 500; }
.form-input {
  width: 100%; padding: 10px 14px; border-radius: 8px;
  background: var(--dark-3); border: 1px solid var(--border);
  color: var(--text-primary); font-size: 0.9rem;
  transition: border-color 0.2s; outline: none; font-family: inherit;
}
.form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,110,247,0.15); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-check { display: flex; align-items: center; gap: 8px; font-size: 0.83rem; color: var(--text-muted); cursor: pointer; }
.form-check input { accent-color: var(--primary); }
.form-check a { color: var(--primary); }
.form-link { color: var(--primary); font-size: 0.83rem; }
.form-link:hover { text-decoration: underline; }
.form-footer { text-align: center; margin-top: 20px; font-size: 0.83rem; color: var(--text-muted); }
.btn-block { display: block; width: 100%; padding: 11px; border-radius: 9px; background: var(--primary); color: #fff; font-size: 0.95rem; font-weight: 700; border: none; cursor: pointer; transition: all 0.2s; text-align: center; }
.btn-block:hover { background: var(--primary-dark); box-shadow: 0 4px 20px rgba(79,110,247,0.4); }
.divider { display: flex; align-items: center; gap: 12px; margin: 22px 0; color: var(--text-muted); font-size: 0.8rem; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.social-btn { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; padding: 10px; border-radius: 8px; background: var(--dark-3); border: 1px solid var(--border); color: var(--text-secondary); font-size: 0.875rem; cursor: pointer; transition: all 0.2s; }
.social-btn:hover { border-color: rgba(255,255,255,0.2); color: var(--text-primary); }
.register-steps { display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 28px; }
.reg-step { display: flex; align-items: center; gap: 6px; font-size: 0.82rem; color: var(--text-muted); }
.reg-step.active { color: var(--primary); font-weight: 600; }
.reg-step.done { color: var(--secondary); }
.reg-step-num { width: 22px; height: 22px; border-radius: 50%; background: var(--dark-4); display: flex; align-items: center; justify-content: center; font-size: 0.72rem; font-weight: 700; }
.reg-step.active .reg-step-num { background: var(--primary); color: #fff; }
.reg-step.done .reg-step-num { background: var(--secondary); color: #fff; }
.reg-step-line { width: 30px; height: 1px; background: var(--border); }
.identity-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 22px; }
.identity-card { padding: 18px 14px; border-radius: 10px; border: 2px solid var(--border); background: var(--dark-3); cursor: pointer; text-align: center; transition: all 0.2s; }
.identity-card:hover { border-color: rgba(79,110,247,0.4); }
.identity-card.selected { border-color: var(--primary); background: rgba(79,110,247,0.08); }
.identity-card .ic-icon { font-size: 1.8rem; margin-bottom: 8px; }
.identity-card .ic-title { font-size: 0.9rem; font-weight: 700; margin-bottom: 4px; }
.identity-card .ic-desc { font-size: 0.75rem; color: var(--text-muted); line-height: 1.4; }
.alert { padding: 10px 14px; border-radius: 8px; font-size: 0.85rem; margin-bottom: 16px; }
.alert-error { background: rgba(248,81,73,0.1); border: 1px solid rgba(248,81,73,0.3); color: #F85149; }
.alert-success { background: rgba(0,212,170,0.1); border: 1px solid rgba(0,212,170,0.3); color: var(--secondary); }

/* ===== CONSOLE LAYOUT ===== */
.console-layout { display: flex; min-height: 100vh; padding-top: 64px; }
.sidebar {
  width: var(--sidebar-w); flex-shrink: 0;
  background: var(--dark-2); border-right: 1px solid var(--border);
  position: fixed; top: 64px; bottom: 0; left: 0;
  overflow-y: auto; z-index: 100;
  display: flex; flex-direction: column;
}
.sidebar-section { padding: 16px 12px 8px; }
.sidebar-section-title { font-size: 0.7rem; color: var(--text-muted); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; padding: 0 8px; margin-bottom: 6px; }
.sidebar-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 8px; font-size: 0.875rem;
  color: var(--text-secondary); cursor: pointer; transition: all 0.2s;
  text-decoration: none; position: relative;
}
.sidebar-item:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.sidebar-item.active { background: rgba(79,110,247,0.15); color: var(--primary); font-weight: 600; }
.sidebar-item .si-icon { font-size: 1rem; width: 20px; text-align: center; flex-shrink: 0; }
.sidebar-item .si-badge { margin-left: auto; background: var(--primary); color: #fff; font-size: 0.65rem; padding: 1px 6px; border-radius: 10px; font-weight: 700; }
.sidebar-item .si-arrow { margin-left: auto; font-size: 0.7rem; transition: transform 0.2s; }
.sidebar-item.open .si-arrow { transform: rotate(90deg); }
.sidebar-sub { display: none; padding-left: 30px; }
.sidebar-item.open + .sidebar-sub { display: block; }
.sidebar-sub .sidebar-item { font-size: 0.83rem; padding: 6px 10px; }
.sidebar-footer { margin-top: auto; padding: 16px 12px; border-top: 1px solid var(--border); }
.sidebar-user { display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: 9px; cursor: pointer; transition: background 0.2s; }
.sidebar-user:hover { background: rgba(255,255,255,0.05); }
.user-avatar { width: 34px; height: 34px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: 0.9rem; font-weight: 700; color: #fff; flex-shrink: 0; }
.user-name { font-size: 0.875rem; font-weight: 600; }
.user-role { font-size: 0.75rem; color: var(--text-muted); }

.console-main { margin-left: var(--sidebar-w); flex: 1; min-width: 0; }
.console-header {
  padding: 20px 28px 0; display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border); padding-bottom: 18px;
}
.console-header h1 { font-size: 1.35rem; font-weight: 800; }
.console-header-sub { color: var(--text-muted); font-size: 0.83rem; margin-top: 2px; }
.console-body { padding: 24px 28px; }
.breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 20px; }
.breadcrumb a { color: var(--text-muted); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--text-primary); }
.breadcrumb span { color: var(--text-primary); }

/* ===== CARDS / WIDGETS ===== */
.card { background: var(--dark-2); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.card-header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-title { font-size: 0.95rem; font-weight: 700; }
.card-body { padding: 20px; }
.metric-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-bottom: 24px; }
.metric-card { background: var(--dark-2); border: 1px solid var(--border); border-radius: 12px; padding: 20px; transition: border-color 0.2s; }
.metric-card:hover { border-color: rgba(79,110,247,0.3); }
.metric-label { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.metric-value { font-size: 1.9rem; font-weight: 800; line-height: 1; }
.metric-change { font-size: 0.76rem; margin-top: 6px; }
.metric-change.up { color: var(--secondary); }
.metric-change.down { color: #F85149; }
.col-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 24px; }
.col-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-bottom: 24px; }
.col-7-5 { display: grid; grid-template-columns: 7fr 5fr; gap: 20px; margin-bottom: 24px; }

/* ===== TABLE ===== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th { text-align: left; padding: 10px 14px; font-size: 0.75rem; color: var(--text-muted); font-weight: 600; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,0.04); color: var(--text-secondary); white-space: nowrap; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }
.td-main { color: var(--text-primary); font-weight: 500; }

/* ===== BADGES ===== */
.badge { display: inline-block; padding: 2px 9px; border-radius: 100px; font-size: 0.72rem; font-weight: 600; }
.badge-green { background: rgba(0,212,170,0.12); color: var(--secondary); border: 1px solid rgba(0,212,170,0.25); }
.badge-blue { background: rgba(79,110,247,0.12); color: #7B9FF9; border: 1px solid rgba(79,110,247,0.25); }
.badge-orange { background: rgba(255,107,53,0.12); color: #FF6B35; border: 1px solid rgba(255,107,53,0.25); }
.badge-gray { background: rgba(255,255,255,0.05); color: var(--text-muted); border: 1px solid var(--border); }
.badge-red { background: rgba(248,81,73,0.1); color: #F85149; border: 1px solid rgba(248,81,73,0.25); }

/* ===== CHART PLACEHOLDER ===== */
.chart-area { height: 200px; display: flex; align-items: flex-end; gap: 6px; padding: 10px 0 0; }
.chart-bar { flex: 1; border-radius: 4px 4px 0 0; background: linear-gradient(to top, var(--primary), rgba(79,110,247,0.3)); transition: opacity 0.2s; min-width: 0; }
.chart-bar:hover { opacity: 0.8; }
.chart-line { height: 180px; position: relative; }
.chart-svg { width: 100%; height: 100%; }

/* ===== PROGRESS ===== */
.progress-bar { height: 6px; background: var(--dark-4); border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 3px; background: linear-gradient(90deg, var(--primary), var(--secondary)); }

/* ===== HEATMAP ===== */
.heatmap { display: grid; grid-template-columns: repeat(10,1fr); gap: 3px; }
.hm-cell { aspect-ratio: 1; border-radius: 3px; }

/* ===== ROBOT CARD ===== */
.robot-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.robot-card { background: var(--dark-3); border: 1px solid var(--border); border-radius: 12px; padding: 18px; transition: all 0.2s; }
.robot-card:hover { border-color: rgba(79,110,247,0.3); }
.robot-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.robot-avatar { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; }
.robot-name { font-size: 0.9rem; font-weight: 700; margin-bottom: 3px; }
.robot-model { font-size: 0.75rem; color: var(--text-muted); }
.robot-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.robot-stat { background: var(--dark-4); border-radius: 7px; padding: 8px; text-align: center; }
.robot-stat-val { font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.robot-stat-lbl { font-size: 0.7rem; color: var(--text-muted); }

/* ===== SPACE MAP ===== */
.space-map { display: grid; grid-template-columns: repeat(5,1fr); gap: 8px; }
.space-cell { aspect-ratio: 1; border-radius: 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 0.65rem; cursor: pointer; transition: all 0.2s; padding: 4px; text-align: center; }
.space-cell:hover { transform: scale(1.05); }
.sc-vacant { background: rgba(0,212,170,0.1); border: 1px solid rgba(0,212,170,0.25); color: var(--secondary); }
.sc-occupied { background: rgba(79,110,247,0.15); border: 1px solid rgba(79,110,247,0.3); color: #7B9FF9; }
.sc-inactive { background: var(--dark-4); border: 1px solid var(--border); color: var(--text-muted); }
.sc-maintenance { background: rgba(255,107,53,0.1); border: 1px solid rgba(255,107,53,0.3); color: #FF6B35; }
.space-cell span { font-size: 1rem; margin-bottom: 2px; }

/* ===== PRODUCT GRID ===== */
.product-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.product-card { background: var(--dark-3); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all 0.3s; }
.product-card:hover { border-color: rgba(79,110,247,0.3); transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }
.product-img { height: 160px; display: flex; align-items: center; justify-content: center; font-size: 3.5rem; background: var(--dark-4); }
.product-info { padding: 14px; }
.product-name { font-size: 0.9rem; font-weight: 600; margin-bottom: 6px; }
.product-tags { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 10px; }
.product-price { font-size: 1.1rem; font-weight: 800; color: var(--secondary); }
.product-actions { display: flex; gap: 8px; margin-top: 12px; }

/* ===== PRICING ===== */
.pricing-section { padding: 90px 5%; background: var(--dark-2); }
.pricing-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; max-width: 980px; margin: 50px auto 0; align-items: start; }
.pricing-card { border-radius: 16px; padding: 34px; border: 1px solid var(--border); background: var(--dark-3); position: relative; }
.pricing-card.popular { border-color: var(--primary); background: linear-gradient(145deg, rgba(79,110,247,0.1), var(--dark-3)); }
.pricing-popular-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); padding: 3px 16px; border-radius: 100px; background: linear-gradient(135deg, var(--primary), var(--secondary)); font-size: 0.73rem; font-weight: 700; color: #fff; white-space: nowrap; }
.pricing-name { font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 7px; font-weight: 600; letter-spacing: 0.05em; }
.pricing-price { font-size: 2.6rem; font-weight: 800; line-height: 1; margin-bottom: 4px; }
.pricing-price span { font-size: 0.95rem; font-weight: 400; color: var(--text-muted); }
.pricing-desc { color: var(--text-muted); font-size: 0.83rem; margin-bottom: 24px; }
.pricing-divider { height: 1px; background: var(--border); margin: 20px 0; }
.pricing-features { list-style: none; }
.pricing-features li { display: flex; align-items: flex-start; gap: 9px; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 11px; }
.pricing-features li::before { content: '✓'; color: var(--secondary); font-weight: 700; flex-shrink: 0; }
.pricing-btn { display: block; width: 100%; padding: 11px; border-radius: 8px; text-align: center; font-size: 0.9rem; font-weight: 600; cursor: pointer; margin-top: 24px; transition: all 0.2s; }
.pricing-btn-outline { border: 1px solid var(--border); color: var(--text-primary); background: transparent; }
.pricing-btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.pricing-btn-filled { background: var(--primary); color: #fff; border: none; }
.pricing-btn-filled:hover { background: var(--primary-dark); box-shadow: 0 4px 18px rgba(79,110,247,0.4); }

/* ===== SOLUTION PAGE ===== */
.solution-hero { padding: 120px 5% 70px; background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%); text-align: center; }
.solution-hero h1 { font-size: clamp(2rem,4vw,3.2rem); font-weight: 800; margin-bottom: 16px; }
.solution-hero p { color: var(--text-secondary); font-size: 1rem; max-width: 560px; margin: 0 auto; line-height: 1.8; }
.module-section { padding: 80px 5%; }
.module-section:nth-child(even) { background: var(--dark-2); }
.module-inner { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.module-inner.reverse { direction: rtl; }
.module-inner.reverse > * { direction: ltr; }
.module-visual { height: 320px; border-radius: 16px; border: 1px solid var(--border); background: var(--dark-3); display: flex; align-items: center; justify-content: center; font-size: 4rem; position: relative; overflow: hidden; }
.module-visual::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 50%, rgba(79,110,247,0.12), transparent 70%); }
.module-text .section-tag { margin-bottom: 12px; }
.module-text h2 { font-size: 1.8rem; font-weight: 800; margin-bottom: 14px; }
.module-text p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.8; margin-bottom: 20px; }
.module-bullets { list-style: none; }
.module-bullets li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 10px; }
.module-bullets li::before { content: '▸'; color: var(--primary); font-size: 0.8rem; flex-shrink: 0; margin-top: 2px; }

/* ===== PROFILE ===== */
.profile-header { display: flex; align-items: center; gap: 20px; background: var(--dark-2); border: 1px solid var(--border); border-radius: 14px; padding: 24px; margin-bottom: 24px; }
.profile-avatar-lg { width: 70px; height: 70px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: 1.8rem; font-weight: 700; color: #fff; }
.profile-info h2 { font-size: 1.2rem; font-weight: 800; margin-bottom: 4px; }
.profile-info p { color: var(--text-muted); font-size: 0.85rem; }
.profile-badges { display: flex; gap: 8px; margin-top: 8px; }

/* ===== RECHARGE ===== */
.recharge-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin-bottom: 20px; }
.recharge-card { background: var(--dark-3); border: 2px solid var(--border); border-radius: 12px; padding: 18px; text-align: center; cursor: pointer; transition: all 0.2s; }
.recharge-card:hover, .recharge-card.selected { border-color: var(--primary); background: rgba(79,110,247,0.08); }
.recharge-amount { font-size: 1.6rem; font-weight: 800; color: var(--text-primary); }
.recharge-gift { font-size: 0.75rem; color: var(--secondary); margin-top: 4px; }
.pay-methods { display: flex; gap: 10px; margin-bottom: 20px; }
.pay-method { flex: 1; padding: 12px; border-radius: 9px; border: 2px solid var(--border); background: var(--dark-3); cursor: pointer; text-align: center; font-size: 0.85rem; color: var(--text-secondary); transition: all 0.2s; }
.pay-method:hover, .pay-method.selected { border-color: var(--primary); color: var(--text-primary); }

/* ===== INTELLIGENT AGENT ===== */
.agent-chat { display: flex; flex-direction: column; height: calc(100vh - 160px); background: var(--dark-2); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.chat-messages { flex: 1; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 16px; }
.chat-msg { display: flex; gap: 10px; max-width: 75%; }
.chat-msg.user { align-self: flex-end; flex-direction: row-reverse; }
.chat-bubble { padding: 11px 15px; border-radius: 12px; font-size: 0.875rem; line-height: 1.6; }
.chat-msg.bot .chat-bubble { background: var(--dark-3); border: 1px solid var(--border); border-radius: 4px 12px 12px 12px; }
.chat-msg.user .chat-bubble { background: var(--primary); color: #fff; border-radius: 12px 4px 12px 12px; }
.chat-avatar { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.9rem; flex-shrink: 0; }
.bot-avatar { background: linear-gradient(135deg, var(--primary), var(--secondary)); }
.user-avatar-sm { background: var(--dark-4); border: 1px solid var(--border); }
.chat-input-area { padding: 14px 18px; border-top: 1px solid var(--border); display: flex; gap: 10px; }
.chat-input { flex: 1; background: var(--dark-3); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; color: var(--text-primary); font-size: 0.875rem; outline: none; font-family: inherit; }
.chat-input:focus { border-color: var(--primary); }
.chat-send-btn { padding: 10px 18px; background: var(--primary); color: #fff; border: none; border-radius: 10px; font-size: 0.875rem; font-weight: 600; cursor: pointer; transition: background 0.2s; }
.chat-send-btn:hover { background: var(--primary-dark); }

/* ===== FADE IN ===== */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.5s ease, transform 0.5s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .features-grid, .pricing-grid, .col-2, .col-7-5, .module-inner { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .stat-item::after { display: none; }
  .steps-container { grid-template-columns: 1fr; }
  .steps-container::before { display: none; }
  .metric-grid { grid-template-columns: repeat(2,1fr); }
  .robot-grid { grid-template-columns: repeat(2,1fr); }
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .console-main { margin-left: 0; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .recharge-grid { grid-template-columns: repeat(2,1fr); }
  .product-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 600px) {
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .col-3 { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .space-map { grid-template-columns: repeat(4,1fr); }
}