/* ============================================================
   LingOtter Official Website — Main Stylesheet
   ============================================================ */

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

/* ===== CSS Variables ===== */
:root {
  --bg:        #07050F;
  --bg-2:      #0C0818;
  --bg-3:      #110D20;
  --bg-card:   rgba(139, 92, 246, 0.07);
  --purple:    #8B5CF6;
  --purple-d:  #7C3AED;
  --purple-l:  #A78BFA;
  --purple-xl: #C4B5FD;
  --cyan:      #22D3EE;
  --green:     #34D399;
  --amber:     #FBBF24;
  --pink:      #F472B6;
  --text-1:    #F1F5F9;
  --text-2:    #94A3B8;
  --text-3:    #64748B;
  --border:    rgba(139, 92, 246, 0.15);
  --border-h:  rgba(139, 92, 246, 0.45);
  --grad-purple: linear-gradient(135deg, #8B5CF6 0%, #6D28D9 100%);
  --grad-accent: linear-gradient(135deg, #22D3EE 0%, #8B5CF6 100%);
  --grad-hero:
    radial-gradient(ellipse at 50% -10%, rgba(139,92,246,0.35) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 90%, rgba(16,185,129,0.1) 0%, transparent 45%),
    #07050F;
  --section-pad: 100px 0;
  --container:   1200px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  background: var(--bg);
  color: var(--text-1);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ===== Typography ===== */
h1, h2, h3, h4 { line-height: 1.2; letter-spacing: -0.02em; font-weight: 700; }
h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.1rem, 1.8vw, 1.4rem); }
p  { color: var(--text-2); }
a  { color: inherit; text-decoration: none; }

/* ===== Layout ===== */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
section { padding: var(--section-pad); }

/* ===== Navigation ===== */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 64px; padding: 0 24px;
  display: flex; align-items: center;
  background: rgba(7, 5, 15, 0.75);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  transition: var(--t);
}
nav.scrolled {
  background: rgba(7, 5, 15, 0.96);
  box-shadow: 0 4px 32px rgba(0,0,0,0.4);
}
.nav-inner {
  max-width: var(--container); margin: 0 auto; width: 100%;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.15rem; color: var(--text-1);
}
.logo-icon {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--grad-purple);
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; box-shadow: 0 4px 16px rgba(139,92,246,0.45);
}
.nav-links {
  display: flex; align-items: center; gap: 36px; list-style: none;
}
.nav-utilities {
  display: flex; align-items: center; gap: 10px;
}
.nav-links a {
  color: var(--text-2); font-size: 0.88rem; font-weight: 500;
  transition: var(--t); position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 1.5px; background: var(--purple-l);
  transform: scaleX(0); transition: transform 0.25s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-1); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 24px; border-radius: 10px;
  font-size: 0.9rem; font-weight: 600; cursor: pointer;
  transition: var(--t); border: none; text-decoration: none; white-space: nowrap;
}
.btn-primary {
  background: var(--grad-purple); color: white;
  box-shadow: 0 4px 20px rgba(139,92,246,0.38);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(139,92,246,0.55); }
.btn-ghost {
  background: transparent; color: var(--text-2);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--border-h); color: var(--text-1); background: var(--bg-card); }
.btn-outline {
  background: transparent; color: var(--purple-l);
  border: 1px solid rgba(139,92,246,0.35);
}
.btn-outline:hover { border-color: var(--purple); background: rgba(139,92,246,0.08); }
.btn-lg  { padding: 13px 30px; font-size: 0.95rem; border-radius: 12px; }
.btn-xl  { padding: 15px 38px; font-size: 1rem; border-radius: 14px; }
.lang-switch {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 52px; padding: 9px 14px;
  border-radius: 10px; border: 1px solid var(--border);
  color: var(--text-2); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.04em;
  background: rgba(139,92,246,0.06); transition: var(--t);
}
.lang-switch:hover {
  color: var(--text-1); border-color: var(--border-h); background: rgba(139,92,246,0.12);
}

/* Mobile hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text-2); transition: var(--t); border-radius: 2px; }

/* ===== Hero ===== */
#hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 100px 0 80px;
  background: var(--grad-hero);
  position: relative; overflow: hidden;
}
.hero-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(139,92,246,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,92,246,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 75% 70% at 50% 40%, black 0%, transparent 100%);
}
.hero-inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 56px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(139,92,246,0.1); border: 1px solid rgba(139,92,246,0.25);
  color: var(--purple-l); padding: 6px 14px;
  border-radius: 100px; font-size: 0.78rem; font-weight: 600;
  margin-bottom: 22px;
}
.hero-badge .dot {
  width: 6px; height: 6px;
  background: #34D399; border-radius: 50%;
  animation: dot-pulse 2s ease-in-out infinite;
  box-shadow: 0 0 6px rgba(52,211,153,0.8);
}
@keyframes dot-pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.7); }
}
.hero-title {
  color: var(--text-1); margin-bottom: 20px;
  background: linear-gradient(135deg, #F1F5F9 0%, var(--purple-xl) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-sub {
  font-size: 1.05rem; color: var(--text-2); margin-bottom: 32px; line-height: 1.75;
}
.hero-sub strong { color: var(--purple-l); font-weight: 600; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-channels {
  display: flex; align-items: center; gap: 12px; margin-top: 28px; flex-wrap: wrap;
}
.hero-channels-label { font-size: 0.75rem; color: var(--text-3); white-space: nowrap; }
.hero-channel-icons { display: flex; gap: 7px; }
.channel-badge {
  width: 32px; height: 32px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; border: 1px solid rgba(255,255,255,0.08);
  transition: var(--t);
}
.channel-badge:hover { transform: translateY(-3px); }

/* ===== Channel brand colors ===== */
.ch-wechat   { background: rgba(7,193,96,0.14);    color: #07C160; }
.ch-whatsapp { background: rgba(37,211,102,0.14);   color: #25D366; }
.ch-telegram { background: rgba(34,158,217,0.14);   color: #229ED9; }
.ch-discord  { background: rgba(88,101,242,0.14);   color: #5865F2; }
.ch-email    { background: rgba(255,107,107,0.14);  color: #FF6B6B; }
.ch-web      { background: rgba(139,92,246,0.18);   color: #A78BFA; }
.ch-app      { background: rgba(251,191,36,0.14);   color: #FBBF24; }

/* ===== Hero Inbox Mockup ===== */
.hero-visual { display: flex; justify-content: center; align-items: center; }
.inbox-mockup {
  width: 100%; max-width: 460px;
  background: rgba(12, 8, 24, 0.9);
  border: 1px solid rgba(139,92,246,0.25);
  border-radius: 20px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6), 0 0 60px rgba(139,92,246,0.12);
  overflow: hidden;
  animation: float 5s ease-in-out infinite;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}
.inbox-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(139,92,246,0.15);
  background: rgba(139,92,246,0.06);
}
.inbox-title { font-weight: 700; font-size: 0.9rem; color: var(--text-1); }
.inbox-status { display: flex; align-items: center; gap: 6px; font-size: 0.75rem; color: var(--green); }
.inbox-status .live-dot {
  width: 7px; height: 7px; background: var(--green); border-radius: 50%;
  animation: dot-pulse 2s ease-in-out infinite;
  box-shadow: 0 0 6px rgba(52,211,153,0.7);
}
.inbox-messages { display: flex; flex-direction: column; }
.inbox-msg {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 20px; border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: var(--t); cursor: pointer;
}
.inbox-msg:hover { background: rgba(139,92,246,0.06); }
.inbox-msg:last-child { border-bottom: none; }
.msg-channel {
  width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.msg-content { flex: 1; min-width: 0; }
.msg-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 3px; }
.msg-name { font-size: 0.82rem; font-weight: 600; color: var(--text-1); }
.msg-time { font-size: 0.7rem; color: var(--text-3); }
.msg-text { font-size: 0.78rem; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.msg-badge {
  flex-shrink: 0; padding: 2px 8px; border-radius: 100px;
  font-size: 0.65rem; font-weight: 700; align-self: center;
}
.msg-badge.ai   { background: rgba(34,211,238,0.15); color: var(--cyan); border: 1px solid rgba(34,211,238,0.2); }
.msg-badge.new  { background: rgba(139,92,246,0.2); color: var(--purple-xl); border: 1px solid rgba(139,92,246,0.3); }
.msg-badge.done { background: rgba(52,211,153,0.12); color: var(--green); border: 1px solid rgba(52,211,153,0.2); }
.inbox-footer {
  padding: 12px 20px;
  border-top: 1px solid rgba(139,92,246,0.12);
  background: rgba(7,5,15,0.5);
}
.inbox-stats { display: flex; gap: 16px; font-size: 0.72rem; color: var(--text-3); }
.inbox-stats strong { color: var(--purple-l); }

/* ===== Section Shared ===== */
.section-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(139,92,246,0.08); border: 1px solid rgba(139,92,246,0.2);
  color: var(--purple-l); padding: 5px 13px; border-radius: 100px;
  font-size: 0.78rem; font-weight: 600; margin-bottom: 14px;
}
.section-heading { text-align: center; margin-bottom: 56px; }
.section-heading h2 { margin-bottom: 14px; }
.section-heading p { font-size: 1rem; max-width: 580px; margin: 0 auto; }
.grad-text {
  background: var(--grad-accent);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.grad-text-purple {
  background: linear-gradient(135deg, var(--purple-xl), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.icon-box {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.icon-box.purple { background: rgba(139,92,246,0.15); color: var(--purple-l); }
.icon-box.cyan   { background: rgba(34,211,238,0.12); color: var(--cyan); }
.icon-box.green  { background: rgba(52,211,153,0.12); color: var(--green); }
.icon-box.amber  { background: rgba(251,191,36,0.12); color: var(--amber); }

/* ===== Channels Section ===== */
#channels { background: var(--bg-2); }

.flow-diagram-wrap {
  margin: 0 auto 56px; max-width: 900px;
  padding: 36px 32px 32px;
  background: rgba(139,92,246,0.04);
  border: 1px solid var(--border); border-radius: 24px;
  position: relative; overflow: hidden;
}
.flow-diagram-wrap::before {
  content:''; position:absolute; top:-1px; left:50%; transform:translateX(-50%);
  width:200px; height:1px;
  background: linear-gradient(90deg, transparent, var(--purple), transparent);
}
.channel-icons-row {
  display: flex; justify-content: space-around; align-items: center;
  position: relative; z-index: 2;
}
.channel-node { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.channel-node-icon {
  width: 60px; height: 60px; border-radius: 15px;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  border: 1px solid rgba(255,255,255,0.07); transition: var(--t); cursor: default;
}
.channel-node:hover .channel-node-icon { transform: translateY(-5px); box-shadow: 0 10px 28px rgba(0,0,0,0.35); }
.channel-node-label { font-size: 0.68rem; color: var(--text-3); font-weight: 500; text-align: center; }

.flow-svg { display: block; width: 100%; overflow: visible; }

.hub-center { display: flex; justify-content: center; margin: 0 0 16px; position: relative; z-index: 2; }
.hub-box {
  background: var(--grad-purple); border-radius: 18px;
  padding: 18px 40px; text-align: center;
  box-shadow: 0 8px 40px rgba(139,92,246,0.45);
  position: relative;
}
.hub-box::before {
  content: ''; position: absolute; inset: -1px; border-radius: 19px;
  background: linear-gradient(135deg, rgba(196,181,253,0.3), transparent); z-index: -1;
}
.hub-name { font-size: 1.05rem; font-weight: 800; color: white; letter-spacing: -0.01em; }
.hub-sub  { font-size: 0.72rem; color: rgba(255,255,255,0.68); margin-top: 2px; }

.output-row { display: flex; justify-content: center; gap: 32px; }
.output-box {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 14px 22px; min-width: 120px; text-align: center;
  transition: var(--t);
}
.output-box:hover { border-color: var(--border-h); transform: translateY(-3px); }
.output-icon { font-size: 22px; }
.output-label { font-size: 0.78rem; font-weight: 700; color: var(--text-1); }
.output-desc  { font-size: 0.68rem; color: var(--text-3); }

/* Capabilities Grid */
.capabilities-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; margin-bottom: 36px; }
.cap-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px;
  padding: 26px; transition: var(--t);
}
.cap-card:hover {
  border-color: var(--border-h); background: rgba(139,92,246,0.1);
  transform: translateY(-4px); box-shadow: 0 12px 40px rgba(139,92,246,0.14);
}
.cap-card h3 { font-size: 1rem; margin: 14px 0 10px; color: var(--text-1); }
.cap-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.cap-list li {
  font-size: 0.83rem; color: var(--text-2);
  display: flex; align-items: flex-start; gap: 8px;
}
.cap-list li::before { content: '▸'; color: var(--purple-l); margin-top: 1px; flex-shrink: 0; }
.channel-tagline {
  text-align: center; padding: 18px 28px;
  background: rgba(139,92,246,0.07); border: 1px solid rgba(139,92,246,0.2); border-radius: 14px;
  font-size: 0.95rem; color: var(--purple-xl); font-weight: 600;
}

/* ===== Stats Bar ===== */
.stats-bar {
  background: var(--bg-3); padding: 52px 0;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; text-align: center; }
.stat-item { padding: 0 24px; border-right: 1px solid var(--border); }
.stat-item:last-child { border-right: none; }
.stat-number {
  font-size: 2.4rem; font-weight: 900;
  background: var(--grad-accent);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1; margin-bottom: 6px;
}
.stat-label { font-size: 0.8rem; color: var(--text-3); }

/* ===== Values Section ===== */
#values { background: var(--bg); }
.values-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.value-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 24px; padding: 40px 32px; text-align: center;
  transition: var(--t); position: relative; overflow: hidden;
}
.value-card::after {
  content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 60%; height: 1.5px; transition: var(--t);
}
.value-card.cost::after     { background: linear-gradient(90deg, transparent, var(--cyan), transparent); }
.value-card.efficiency::after{ background: linear-gradient(90deg, transparent, var(--purple), transparent); }
.value-card.growth::after   { background: linear-gradient(90deg, transparent, var(--green), transparent); }
.value-card:hover { transform: translateY(-6px); }
.value-card.cost:hover      { box-shadow: 0 20px 50px rgba(34,211,238,0.1); border-color: rgba(34,211,238,0.3); }
.value-card.efficiency:hover{ box-shadow: 0 20px 50px rgba(139,92,246,0.14); border-color: rgba(139,92,246,0.4); }
.value-card.growth:hover    { box-shadow: 0 20px 50px rgba(52,211,153,0.1); border-color: rgba(52,211,153,0.3); }
.value-icon {
  width: 60px; height: 60px; border-radius: 15px;
  display: flex; align-items: center; justify-content: center; font-size: 26px;
  margin: 0 auto 20px;
}
.value-icon.cyan   { background: rgba(34,211,238,0.1); color: var(--cyan); }
.value-icon.purple { background: rgba(139,92,246,0.14); color: var(--purple-l); }
.value-icon.green  { background: rgba(52,211,153,0.1); color: var(--green); }
.value-label {
  font-size: 0.7rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 6px;
}
.value-label.cyan   { color: var(--cyan); }
.value-label.purple { color: var(--purple-l); }
.value-label.green  { color: var(--green); }
.value-card h3 { font-size: 1.25rem; color: var(--text-1); margin-bottom: 12px; }
.value-card p  { font-size: 0.85rem; color: var(--text-2); line-height: 1.75; }

/* ===== AI-Human Section ===== */
#ai-human { background: var(--bg-2); }
.ai-human-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.ai-human-diagram {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 24px; padding: 30px;
}
.diag-row { display: flex; gap: 12px; justify-content: center; margin-bottom: 12px; }
.diag-box {
  flex: 1; background: rgba(139,92,246,0.08); border: 1px solid rgba(139,92,246,0.18);
  border-radius: 12px; padding: 14px; text-align: center;
}
.diag-icon  { font-size: 22px; display: block; margin-bottom: 5px; }
.diag-label { color: var(--text-1); font-weight: 600; font-size: 0.78rem; }
.diag-sub   { color: var(--text-3); font-size: 0.68rem; margin-top: 2px; }
.diag-arrow { text-align: center; color: var(--purple-l); font-size: 18px; margin: 4px 0; }
.diag-hub {
  background: var(--grad-purple); border-radius: 12px; padding: 14px;
  text-align: center; margin: 4px 0; box-shadow: 0 4px 20px rgba(139,92,246,0.3);
}
.diag-hub .diag-label { color: white; font-size: 0.88rem; font-weight: 800; }
.diag-hub .diag-sub   { color: rgba(255,255,255,0.68); }
.diag-split { display: flex; gap: 12px; margin-top: 8px; }
.diag-split-box { flex: 1; border-radius: 10px; padding: 12px; text-align: center; }
.diag-split-box.ai    { background: rgba(34,211,238,0.1); border: 1px solid rgba(34,211,238,0.2); }
.diag-split-box.human { background: rgba(52,211,153,0.1); border: 1px solid rgba(52,211,153,0.2); }
.diag-split-box .diag-icon { font-size: 18px; }
.diag-split-box.ai    .diag-label { color: var(--cyan);  font-size: 0.75rem; font-weight: 700; }
.diag-split-box.human .diag-label { color: var(--green); font-size: 0.75rem; font-weight: 700; }
.ai-human-content h2 { margin-bottom: 14px; }
.ai-human-content > p { font-size: 1.02rem; margin-bottom: 28px; line-height: 1.75; }
.feature-list { display: flex; flex-direction: column; gap: 14px; }
.feature-item {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 18px; transition: var(--t);
}
.feature-item:hover { border-color: var(--border-h); }
.feature-item-icon {
  width: 34px; height: 34px; border-radius: 8px; font-size: 14px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.feature-item-text h4 { font-size: 0.88rem; color: var(--text-1); margin-bottom: 2px; }
.feature-item-text p  { font-size: 0.8rem; color: var(--text-3); }

/* ===== Quick Start ===== */
#quickstart { background: var(--bg); }
.steps-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; position: relative; }
.steps-grid::before {
  content: ''; position: absolute; top: 38px; left: 22%; right: 22%; height: 1px;
  background: linear-gradient(90deg, var(--purple), var(--cyan)); z-index: 0;
}
.step-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 20px; padding: 30px; text-align: center;
  position: relative; z-index: 1; transition: var(--t);
}
.step-card:hover { border-color: var(--border-h); transform: translateY(-5px); box-shadow: 0 14px 44px rgba(139,92,246,0.14); }
.step-number {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--grad-purple);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 800; color: white;
  margin: 0 auto 18px; box-shadow: 0 4px 16px rgba(139,92,246,0.4);
}
.step-card h3 { font-size: 1rem; color: var(--text-1); margin-bottom: 10px; }
.step-card p  { font-size: 0.83rem; color: var(--text-2); line-height: 1.7; }
.step-tag {
  display: inline-block; margin-top: 14px;
  background: rgba(52,211,153,0.1); border: 1px solid rgba(52,211,153,0.2);
  color: var(--green); padding: 3px 12px; border-radius: 100px; font-size: 0.7rem; font-weight: 700;
}

/* ===== CTA Banner ===== */
#cta { background: var(--bg-2); padding: 100px 0; }
.cta-box {
  background: linear-gradient(135deg, rgba(139,92,246,0.14) 0%, rgba(34,211,238,0.07) 100%);
  border: 1px solid rgba(139,92,246,0.3); border-radius: 32px;
  padding: 80px; text-align: center; position: relative; overflow: hidden;
}
.cta-box::before {
  content: ''; position: absolute; top: -90px; left: 50%; transform: translateX(-50%);
  width: 500px; height: 280px;
  background: radial-gradient(ellipse, rgba(139,92,246,0.18), transparent);
  pointer-events: none;
}
.cta-box h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); margin-bottom: 14px; position: relative; }
.cta-box p  { font-size: 1.05rem; margin-bottom: 40px; max-width: 520px; margin-left: auto; margin-right: auto; position: relative; }
.cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; position: relative; }

/* ===== Footer ===== */
footer { background: var(--bg); border-top: 1px solid var(--border); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand p { font-size: 0.85rem; color: var(--text-3); margin-top: 12px; line-height: 1.7; max-width: 280px; }
.footer-col h4 {
  font-size: 0.78rem; font-weight: 800; color: var(--text-2);
  text-transform: uppercase; letter-spacing: 0.09em; margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 0.85rem; color: var(--text-3); transition: var(--t); }
.footer-col a:hover { color: var(--text-1); }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px 16px;
}
.footer-copy { font-size: 0.8rem; color: var(--text-3); }
.footer-icp { font-size: 0.8rem; color: var(--text-3); }
.footer-tagline { font-size: 0.8rem; color: var(--text-3); }

/* ===== Inner Page Hero ===== */
.page-hero {
  padding: 140px 0 80px; background: var(--grad-hero);
  text-align: center; position: relative; overflow: hidden;
}
.page-hero h1 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 14px; }
.page-hero p  { font-size: 1.05rem; max-width: 580px; margin: 0 auto; }
.page-hero-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(139,92,246,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,92,246,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black, transparent);
}

/* ===== Features Page ===== */
.feature-section {
  padding: 80px 0;
  border-bottom: 1px solid rgba(139,92,246,0.1);
}
.feature-section:last-of-type { border-bottom: none; }
.feature-section-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.feature-section-inner.reverse { direction: rtl; }
.feature-section-inner.reverse > * { direction: ltr; }
.feature-section-content h2 { font-size: 1.7rem; margin-bottom: 10px; }
.feature-section-content .sub { font-size: 1rem; margin-bottom: 26px; line-height: 1.75; }
.feature-bullets { display: flex; flex-direction: column; gap: 12px; }
.feature-bullet { display: flex; align-items: flex-start; gap: 12px; }
.bullet-icon {
  width: 28px; height: 28px; border-radius: 7px; font-size: 11px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; margin-top: 2px;
}
.bullet-icon.purple { background: rgba(139,92,246,0.14); color: var(--purple-l); }
.bullet-icon.cyan   { background: rgba(34,211,238,0.12); color: var(--cyan); }
.bullet-icon.green  { background: rgba(52,211,153,0.12); color: var(--green); }
.bullet-icon.amber  { background: rgba(251,191,36,0.12); color: var(--amber); }
.bullet-text { font-size: 0.88rem; color: var(--text-2); line-height: 1.6; }
.bullet-text strong { color: var(--text-1); font-weight: 600; display: block; margin-bottom: 1px; }

.feature-cards-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.mini-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px;
  padding: 20px; transition: var(--t);
}
.mini-card:hover { border-color: var(--border-h); transform: translateY(-3px); }
.mini-card .mini-icon { font-size: 22px; margin-bottom: 8px; }
.mini-card h4 { font-size: 0.85rem; color: var(--text-1); margin-bottom: 4px; }
.mini-card p  { font-size: 0.76rem; color: var(--text-3); line-height: 1.5; }

.highlight-box {
  background: rgba(139,92,246,0.07); border: 1px solid rgba(139,92,246,0.2);
  border-radius: 16px; padding: 24px; margin-top: 20px;
}
.highlight-box p { font-size: 0.9rem; color: var(--purple-xl); font-weight: 600; }

/* ===== Solutions Page ===== */
.solutions-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.solution-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 24px; padding: 36px; transition: var(--t); position: relative;
}
.solution-card:hover {
  border-color: var(--border-h); transform: translateY(-5px);
  box-shadow: 0 18px 55px rgba(139,92,246,0.14);
}
.solution-number {
  font-size: 0.7rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--purple-l); margin-bottom: 6px;
}
.solution-card h3 {
  font-size: 1.15rem; color: var(--text-1); margin-bottom: 18px;
  padding-bottom: 14px; border-bottom: 1px solid var(--border);
}
.sol-section-label {
  font-size: 0.68rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-3); margin-bottom: 5px; margin-top: 14px;
}
.sol-list { list-style: none; display: flex; flex-direction: column; gap: 5px; }
.sol-list li {
  font-size: 0.83rem; color: var(--text-2);
  display: flex; align-items: flex-start; gap: 6px;
}
.sol-list li::before { content: '✓'; color: var(--green); font-size: 0.72rem; margin-top: 2px; flex-shrink: 0; }
.sol-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.tag {
  background: rgba(139,92,246,0.1); border: 1px solid rgba(139,92,246,0.2);
  color: var(--purple-l); padding: 3px 10px; border-radius: 100px; font-size: 0.7rem; font-weight: 600;
}
.tag.green { background: rgba(52,211,153,0.08); border-color: rgba(52,211,153,0.22); color: var(--green); }
.tag.cyan  { background: rgba(34,211,238,0.08); border-color: rgba(34,211,238,0.22); color: var(--cyan); }
.tag.amber { background: rgba(251,191,36,0.08); border-color: rgba(251,191,36,0.22); color: var(--amber); }

/* ===== Scroll Reveal ===== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.65s var(--ease), transform 0.65s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner        { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual       { justify-content: flex-start; }
  .inbox-mockup      { max-width: 100%; }
  .ai-human-grid     { grid-template-columns: 1fr; }
  .footer-grid       { grid-template-columns: 1fr 1fr; }
  .feature-section-inner { grid-template-columns: 1fr; }
  .feature-section-inner.reverse { direction: ltr; }
  .feature-cards-panel { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  :root { --section-pad: 64px 0; }
  .nav-links { display: none; }
  .nav-utilities .btn-primary { display: none; }
  .hamburger { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed; top: 64px; left: 0; right: 0;
    background: rgba(7,5,15,0.97); backdrop-filter: blur(20px);
    padding: 24px; gap: 20px;
    border-bottom: 1px solid var(--border); z-index: 99;
  }
  .capabilities-grid { grid-template-columns: 1fr; }
  .values-grid       { grid-template-columns: 1fr; }
  .steps-grid        { grid-template-columns: 1fr; }
  .steps-grid::before { display: none; }
  .solutions-grid    { grid-template-columns: 1fr; }
  .stats-grid        { grid-template-columns: 1fr 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--border); padding: 20px 0; }
  .stat-item:last-child { border-bottom: none; }
  .cta-box  { padding: 48px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .channel-icons-row { flex-wrap: wrap; gap: 12px; justify-content: center; }
  .feature-cards-panel { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .hero-inner { text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-channels { justify-content: center; }
  .hero-visual { justify-content: center; }
}