/* ===== Landing Page — Deep Space Blue-Purple Tech ===== */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}

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

/* ---------- Particle Canvas ---------- */
#particleCanvas {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: 0;
    pointer-events: none;
}

/* ---------- Navigation ---------- */
.landing-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.landing-nav.scrolled {
    background: rgba(10, 10, 15, 0.92);
    border-bottom-color: var(--border-primary);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
}

.nav-logo i {
    font-size: 1.6rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.4));
}

.nav-logo span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 6px 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 50%;
    width: 0; height: 2px;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 1px;
}

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

.nav-links a:hover::after {
    width: 80%;
}

.nav-login-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 24px;
    background: var(--gradient-primary);
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    color: #fff;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
}

.nav-login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-hamburger span {
    width: 24px; height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- Hero Section ---------- */
.hero-section {
    position: relative;
    min-height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 2rem 20px;
    z-index: 1;
    overflow: hidden;
}

/* Glow orbs */
.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
    z-index: -1;
}

.hero-glow-1 {
    width: 600px; height: 600px;
    background: rgba(99, 102, 241, 0.12);
    top: -10%; left: 10%;
    animation: glowDrift1 15s ease-in-out infinite;
}

.hero-glow-2 {
    width: 500px; height: 500px;
    background: rgba(139, 92, 246, 0.1);
    bottom: -5%; right: 5%;
    animation: glowDrift2 18s ease-in-out infinite;
}

.hero-glow-3 {
    width: 400px; height: 400px;
    background: rgba(6, 182, 212, 0.08);
    top: 40%; right: 20%;
    animation: glowDrift3 20s ease-in-out infinite;
}

@keyframes glowDrift1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(60px, 40px) scale(1.15); }
}

@keyframes glowDrift2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-50px, -30px) scale(1.1); }
}

@keyframes glowDrift3 {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.6; }
    50% { transform: translate(40px, -40px) scale(1.2); opacity: 1; }
}

/* Floating crypto icons */
.floating-icons {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: -1;
}

.float-icon {
    position: absolute;
    font-size: 1.6rem;
    color: rgba(99, 102, 241, 0.15);
    animation: floatIcon 12s ease-in-out infinite;
}

.fi-1 { top: 15%; left: 8%; animation-delay: 0s; animation-duration: 14s; font-size: 2.2rem; color: rgba(247, 147, 26, 0.15); }
.fi-2 { top: 25%; right: 12%; animation-delay: 2s; animation-duration: 16s; font-size: 2rem; color: rgba(98, 126, 234, 0.15); }
.fi-3 { bottom: 30%; left: 15%; animation-delay: 4s; font-size: 1.4rem; }
.fi-4 { top: 20%; right: 25%; animation-delay: 1s; animation-duration: 18s; }
.fi-5 { bottom: 25%; right: 8%; animation-delay: 3s; animation-duration: 15s; }
.fi-6 { top: 50%; left: 5%; animation-delay: 5s; animation-duration: 13s; color: rgba(245, 158, 11, 0.15); }

@keyframes floatIcon {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(5deg); }
    75% { transform: translateY(15px) rotate(-3deg); }
}

/* Hero content */
.hero-inner {
    text-align: center;
    max-width: 800px;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: 30px;
    font-size: 0.85rem;
    color: #6ee7b7;
    margin-bottom: 2rem;
    animation: fadeInDown 0.8s ease both;
}

.badge-dot {
    width: 8px; height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 0.8rem;
}

.title-line {
    display: block;
    opacity: 0;
    animation: titleReveal 0.8s ease forwards;
}

.title-line:nth-child(1) { animation-delay: 0.2s; }
.title-line:nth-child(2) { animation-delay: 0.5s; }
.title-line:nth-child(3) { animation-delay: 0.8s; }

.title-gradient {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 40%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 30px rgba(99, 102, 241, 0.3));
}

@keyframes titleReveal {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    0% { opacity: 0; transform: translateY(-15px); }
    100% { opacity: 1; transform: translateY(0); }
}

.hero-desc {
    font-size: clamp(0.9rem, 1.8vw, 1.1rem);
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.8s forwards;
}

.hero-sub-desc {
    font-size: clamp(0.8rem, 1.3vw, 0.95rem);
    color: var(--text-muted);
    margin-bottom: 1.2rem;
    line-height: 1.7;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.9s forwards;
}

.hero-cta {
    display: flex;
    gap: 0.8rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1s forwards;
}

.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 28px;
    background: var(--gradient-primary);
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.95rem;
    color: #fff;
    transition: all 0.3s ease;
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.cta-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.45);
}

.cta-primary:hover::before { opacity: 1; }

.cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 28px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.cta-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* Stats strip */
.stats-strip {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 1.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1.2s forwards;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    min-width: 110px;
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--border-accent);
    transform: translateY(-4px);
}

.stat-icon {
    font-size: 1.1rem;
    color: var(--primary-light);
    margin-bottom: 2px;
}

.stat-num {
    font-size: 1.4rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-text {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Scroll hint */
.scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    animation: bounce 2s ease-in-out infinite;
    z-index: 2;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(25px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* ---------- Section Commons ---------- */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-head {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 30px;
    font-size: 0.85rem;
    color: #a5b4fc;
    margin-bottom: 1.2rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ---------- Reveal animation ---------- */
.reveal-item {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-item.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.features-grid .reveal-item:nth-child(1) { transition-delay: 0s; }
.features-grid .reveal-item:nth-child(2) { transition-delay: 0.1s; }
.features-grid .reveal-item:nth-child(3) { transition-delay: 0.2s; }
.features-grid .reveal-item:nth-child(4) { transition-delay: 0.3s; }
.features-grid .reveal-item:nth-child(5) { transition-delay: 0.4s; }
.features-grid .reveal-item:nth-child(6) { transition-delay: 0.5s; }

.channels-grid .reveal-item:nth-child(1) { transition-delay: 0s; }
.channels-grid .reveal-item:nth-child(2) { transition-delay: 0.08s; }
.channels-grid .reveal-item:nth-child(3) { transition-delay: 0.16s; }
.channels-grid .reveal-item:nth-child(4) { transition-delay: 0.24s; }
.channels-grid .reveal-item:nth-child(5) { transition-delay: 0.32s; }
.channels-grid .reveal-item:nth-child(6) { transition-delay: 0.4s; }
.channels-grid .reveal-item:nth-child(7) { transition-delay: 0.48s; }
.channels-grid .reveal-item:nth-child(8) { transition-delay: 0.56s; }
.channels-grid .reveal-item:nth-child(9) { transition-delay: 0.64s; }

.enterprise-grid .reveal-item:nth-child(1) { transition-delay: 0s; }
.enterprise-grid .reveal-item:nth-child(2) { transition-delay: 0.1s; }
.enterprise-grid .reveal-item:nth-child(3) { transition-delay: 0.2s; }
.enterprise-grid .reveal-item:nth-child(4) { transition-delay: 0.3s; }
.enterprise-grid .reveal-item:nth-child(5) { transition-delay: 0.4s; }
.enterprise-grid .reveal-item:nth-child(6) { transition-delay: 0.5s; }

/* ---------- Word Cloud (inside Hero) ---------- */
.hero-wordcloud {
    width: 100%;
    max-width: 1100px;
    margin: 0.8rem auto 0;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1.4s forwards;
}

.hero-wc-label {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.hero-wc-label i {
    color: #f59e0b;
}

.wordcloud-wrapper {
    position: relative;
    background: transparent;
    border: none;
    border-radius: 16px;
    overflow: hidden;
}

#wordcloudCanvas {
    display: block;
    width: 100%;
    height: 560px;
    cursor: default;
}

/* 词云悬停提示卡片 */
.wc-tooltip {
    position: absolute;
    pointer-events: auto;
    background: rgba(26, 26, 46, 0.95);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 10px;
    padding: 12px 16px;
    max-width: 360px;
    z-index: 10;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    display: none;
}

.wc-tooltip.show { display: block; }

.wc-tooltip-word {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.wc-tooltip-meta {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 400;
}

.wc-tooltip-news {
    list-style: none;
    padding: 0;
    margin: 0;
}

.wc-tooltip-news li {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 4px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 6px;
}

.wc-tooltip-news li:last-child { border-bottom: none; }

.wc-tooltip-news li::before {
    content: '•';
    color: var(--primary-light);
    flex-shrink: 0;
    margin-top: 1px;
}

.wordcloud-legend {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 0.8rem 0 0.5rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.legend-ann { background: #6366f1; }
.legend-news { background: #06b6d4; }
.legend-both { background: #f59e0b; }

@media (max-width: 768px) {
    #wordcloudCanvas {
        height: 300px;
    }

    .wordcloud-legend {
        gap: 1rem;
        flex-wrap: wrap;
    }
}

/* ---------- Features Section ---------- */
.features-section {
    position: relative;
    padding: 8rem 0;
    z-index: 1;
}

.features-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
    z-index: -1;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feat-card {
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s;
}

.feat-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(99, 102, 241, 0.2);
    transform: translateY(-6px) perspective(1000px) rotateX(2deg);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(99, 102, 241, 0.08);
}

.feat-card:hover::before { opacity: 1; }

.feat-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--icon-color, #6366f1);
    margin-bottom: 1.2rem;
    border: 1px solid rgba(99, 102, 241, 0.15);
}

.feat-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}

.feat-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 1rem;
}

.feat-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    list-style: none;
}

.feat-tags li {
    padding: 3px 10px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.12);
    border-radius: 6px;
    font-size: 0.75rem;
    color: #a5b4fc;
}

/* ---------- Filter Section ---------- */
.filter-section {
    position: relative;
    padding: 6rem 0 8rem;
    z-index: 1;
}

.filter-showcase {
    max-width: 900px;
    margin: 0 auto;
}

.filter-demo {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.filter-card {
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 14px;
    padding: 1.5rem;
}

.filter-card-head {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}

.filter-card-head i {
    color: var(--primary-light);
}

.filter-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.filter-example {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.kw-tag {
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
}

.kw-preset {
    background: rgba(99, 102, 241, 0.12);
    color: #a5b4fc;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.kw-custom {
    background: rgba(6, 182, 212, 0.12);
    color: #67e8f9;
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.kw-include {
    background: rgba(16, 185, 129, 0.12);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.kw-exclude {
    background: rgba(239, 68, 68, 0.12);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.combo-rule {
    width: 100%;
}

.combo-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.combo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.notify-demo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.channel-badge {
    padding: 3px 10px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 6px;
    font-size: 0.75rem;
    color: #fcd34d;
}

/* ---------- Channels Section ---------- */
.channels-section {
    position: relative;
    padding: 6rem 0 8rem;
    z-index: 1;
}

.channels-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.04) 0%, transparent 60%);
    z-index: -1;
}

.channels-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
    max-width: 900px;
    margin: 0 auto;
}

.channel-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 2rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 14px;
    transition: all 0.3s ease;
    text-align: center;
}

.channel-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(99, 102, 241, 0.2);
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.channel-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: #fff;
}

.channel-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.channel-card p {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ---------- Enterprise Section ---------- */
.enterprise-section {
    position: relative;
    padding: 8rem 0;
    z-index: 1;
    overflow: hidden;
}

.enterprise-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(180deg, var(--bg-primary) 0%, #0d0d1a 50%, var(--bg-primary) 100%);
}

.ent-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
}

.ent-glow-1 {
    width: 500px; height: 500px;
    background: rgba(245, 158, 11, 0.06);
    top: 10%; left: 20%;
    animation: glowDrift1 18s ease-in-out infinite;
}

.ent-glow-2 {
    width: 400px; height: 400px;
    background: rgba(99, 102, 241, 0.08);
    bottom: 10%; right: 15%;
    animation: glowDrift2 20s ease-in-out infinite;
}

.ent-tag {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.25);
    color: #fcd34d;
}

.ent-title {
    background: linear-gradient(135deg, #fcd34d 0%, #f59e0b 50%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.enterprise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.ent-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(245, 158, 11, 0.08);
    border-radius: 14px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.ent-card:hover {
    background: rgba(245, 158, 11, 0.03);
    border-color: rgba(245, 158, 11, 0.18);
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.ent-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fcd34d;
    margin-bottom: 1rem;
}

.ent-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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

.ent-cta {
    text-align: center;
    padding: 2.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(245, 158, 11, 0.1);
    border-radius: 16px;
}

.ent-cta p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.cta-enterprise {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 40px;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.05rem;
    color: #0a0a0f;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.25);
}

.cta-enterprise:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(245, 158, 11, 0.4);
}

/* ---------- Final CTA ---------- */
.final-cta-section {
    position: relative;
    padding: 6rem 0;
    z-index: 1;
}

.final-cta {
    text-align: center;
    padding: 4rem 2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
    z-index: -1;
}

.final-cta h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
}

.final-cta p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-large {
    padding: 16px 48px;
    font-size: 1.15rem;
}

/* ---------- Footer ---------- */
.landing-footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2.5rem 0;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.footer-brand i {
    color: var(--primary-light);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ---------- Mobile Responsive ---------- */
@media (max-width: 1024px) {
    .features-grid,
    .enterprise-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .filter-demo {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px; left: 0; right: 0;
        background: rgba(10, 10, 15, 0.96);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1.5rem;
        gap: 0;
        border-bottom: 1px solid var(--border-primary);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 12px 16px;
        text-align: center;
        border-radius: 8px;
        width: 100%;
    }

    .nav-hamburger {
        display: flex;
    }

    .nav-actions {
        margin-right: 0.5rem;
    }

    .hero-section {
        padding: 100px 1.5rem 50px;
        min-height: auto;
    }

    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .stats-strip {
        gap: 0.6rem;
    }

    .stat-card {
        min-width: 100px;
        padding: 12px 14px;
    }

    .stat-num {
        font-size: 1.4rem;
    }

    .features-grid,
    .enterprise-grid {
        grid-template-columns: 1fr;
    }

    /* 9 渠道保持 3x3 九宫格，卡片收紧 */
    .channels-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.8rem;
    }
    .channel-card { padding: 1.4rem 0.6rem; }

    .floating-icons { display: none; }

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

    .cta-primary, .cta-secondary {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .ent-cta {
        padding: 2rem 1rem;
    }
}

@media (max-width: 480px) {
    .stats-strip {
        flex-direction: column;
        align-items: center;
    }

    .stat-card {
        width: 100%;
        max-width: 250px;
        flex-direction: row;
        gap: 12px;
        justify-content: center;
    }

    /* 手机端也保持 3x3 九宫格，紧凑排布 */
    .channels-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.6rem;
    }
    .channel-card { padding: 1.1rem 0.4rem; gap: 6px; }
    .channel-icon { width: 40px; height: 40px; font-size: 1.1rem; }
    .channel-card h4 { font-size: 0.82rem; }
    .channel-card p { font-size: 0.66rem; }

    .filter-card {
        padding: 1.2rem;
    }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .reveal-item {
        opacity: 1;
        transform: none;
    }

    #particleCanvas {
        display: none;
    }
}

/* ===================================================================
   桌面端 Hero 两栏布局（左文案+统计 / 右实时词云）
   移动端（≤1080px）回退为原居中单列
   =================================================================== */
.hero-section {
    padding: 105px 3rem 55px;
}

.hero-layout {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
    max-width: 1380px;
    margin: 0 auto;
}

.hero-left { min-width: 0; }
.hero-right { min-width: 0; }

/* 左栏：文案左对齐 */
.hero-layout .hero-inner {
    text-align: left;
    max-width: none;
}

.hero-layout .hero-title {
    font-size: clamp(2.6rem, 3.6vw, 4rem);
}

.hero-layout .hero-title .title-line {
    display: inline;          /* 桌面宽度足够：标题一行排开 */
}

.hero-layout .hero-title .title-line + .title-line::before {
    content: ' ';
}

.hero-layout .hero-sub-desc br { display: none; }
.hero-layout .hero-sub-desc { max-width: 560px; }

.hero-layout .hero-cta {
    justify-content: flex-start;
}

/* 左栏统计：由卡片改为分隔线式数字条，更桌面质感 */
.hero-layout .stats-strip {
    justify-content: flex-start;
    gap: 0;
    margin-top: 2.4rem;
}

.hero-layout .stat-card {
    background: none;
    border: none;
    border-radius: 0;
    backdrop-filter: none;
    align-items: flex-start;
    min-width: 0;
    padding: 2px 2rem;
}

.hero-layout .stat-card:first-child { padding-left: 0; }
.hero-layout .stat-card + .stat-card { border-left: 1px solid rgba(255, 255, 255, 0.1); }
.hero-layout .stat-card:hover { transform: none; background: none; }
.hero-layout .stat-icon { display: none; }
.hero-layout .stat-num { font-size: 1.7rem; }
.hero-layout .stat-text { font-size: 0.82rem; color: var(--text-muted); }

/* 右栏：词云填满 */
.hero-layout .hero-wordcloud {
    max-width: none;
    margin: 0;
}

.hero-layout #wordcloudCanvas { height: 500px; }

.hero-layout .hero-wc-label { text-align: left; padding-left: 6px; }
.hero-layout .wordcloud-legend { justify-content: flex-start; padding-left: 6px; }

/* 窄屏回退：单列居中（移动端后续独立设计，此处保底不烂） */
@media (max-width: 1080px) {
    .hero-section { padding: 90px 1.5rem 40px; }
    .hero-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .hero-layout .hero-inner { text-align: center; }
    .hero-layout .hero-title .title-line { display: block; }
    .hero-layout .hero-sub-desc { max-width: none; margin-left: auto; margin-right: auto; }
    .hero-layout .hero-cta { justify-content: center; }
    .hero-layout .stats-strip { justify-content: center; }
    .hero-layout .stat-card { align-items: center; padding: 2px 1.2rem; }
    .hero-layout .stat-card:first-child { padding-left: 1.2rem; }
    .hero-layout #wordcloudCanvas { height: 420px; }
    .hero-layout .hero-wc-label,
    .hero-layout .wordcloud-legend { text-align: center; justify-content: center; padding-left: 0; }
}

/* ===================================================================
   Hero 右栏：实时推送模拟窗口
   =================================================================== */
.live-preview {
    position: relative;
    background: linear-gradient(160deg, rgba(26, 26, 46, 0.9), rgba(15, 15, 30, 0.95));
    border: 1px solid rgba(139, 92, 246, 0.22);
    border-radius: 18px;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.03) inset,
                0 0 80px rgba(99, 102, 241, 0.08);
    overflow: hidden;
    height: 520px;
    display: flex;
    flex-direction: column;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
}

.lp-titlebar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 18px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.lp-dots { display: flex; gap: 6px; }
.lp-dots i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.lp-dots i:nth-child(1) { background: #ff5f57; }
.lp-dots i:nth-child(2) { background: #febc2e; }
.lp-dots i:nth-child(3) { background: #28c840; }

.lp-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary, #94a3b8);
    flex: 1;
}

.lp-live-dot {
    width: 8px; height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.lp-channels { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; }
.lp-channels i { opacity: 0.75; }
.lp-channels .fa-telegram { color: #2aabee; }
.lp-channels .fa-bell { color: #f59e0b; }
.lp-channels .fa-weixin { color: #22c55e; }
.lp-channels .fa-desktop { color: #8b5cf6; }
/* 微信渠道突出展示：绿色胶囊 + 文字标签 */
.lp-channels .lp-wx {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 9px;
    border-radius: 999px;
    background: rgba(7, 193, 96, 0.15);
    border: 1px solid rgba(7, 193, 96, 0.4);
    color: #22c55e;
    font-size: 0.78rem;
    font-weight: 700;
    box-shadow: 0 0 10px rgba(7, 193, 96, 0.25);
    white-space: nowrap;
}
.lp-channels .lp-wx i { opacity: 1; }

.lp-feed {
    flex: 1;
    padding: 14px 14px 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lp-card {
    display: flex;
    gap: 12px;
    padding: 13px 14px;
    background: rgba(255, 255, 255, 0.032);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-left: 3px solid var(--lp-color, #6366f1);
    border-radius: 12px;
    flex-shrink: 0;
    animation: lpSlideIn 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes lpSlideIn {
    from { opacity: 0; transform: translateY(-18px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.lp-card-icon {
    width: 38px; height: 38px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
    color: #fff;
    background: var(--lp-color, #6366f1);
    flex-shrink: 0;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--lp-color, #6366f1) 35%, transparent);
}

.lp-card-body { min-width: 0; flex: 1; }

.lp-card-top {
    display: flex; align-items: center; gap: 8px;
    margin-bottom: 3px;
}

.lp-card-source {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--lp-color, #a5b4fc);
    letter-spacing: 0.3px;
}

.lp-card-time { font-size: 0.7rem; color: var(--text-muted, #64748b); margin-left: auto; flex-shrink: 0; }

.lp-card-title {
    font-size: 0.86rem;
    color: #e2e8f0;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lp-card-title .lp-sym {
    color: #a5b4fc;
    font-weight: 700;
    border-bottom: 1px dashed rgba(165, 180, 252, 0.5);
}

.lp-fade {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 70px;
    background: linear-gradient(180deg, transparent, rgba(13, 13, 26, 0.95));
    pointer-events: none;
}

/* 词云独立热点区 */
.trends-section {
    position: relative;
    padding: 90px 2rem 30px;
    z-index: 1;
}

.trends-section .hero-wordcloud { opacity: 1; animation: none; }

@media (max-width: 1080px) {
    .live-preview { height: 440px; }
    .trends-section { padding: 60px 1rem 20px; }
}

.hero-trust {
    margin-top: 1rem;
    font-size: 0.82rem;
    color: var(--text-muted, #64748b);
    opacity: 0;
    animation: fadeInUp 0.8s ease 1.1s forwards;
}
.hero-trust i { color: #10b981; margin-right: 6px; }
@media (max-width: 1080px) { .hero-trust { text-align: center; } }

/* ===================================================================
   桌面端二轮打磨：渠道 4x2 / 过滤卡丰满 / 词云大气化
   =================================================================== */

/* 渠道区：9 渠道固定 3x3 九宫格，卡片更饱满 */
@media (min-width: 1081px) {
    .channels-grid {
        grid-template-columns: repeat(3, 1fr);
        max-width: 1000px;
        gap: 1.4rem;
    }
    .channel-card { padding: 2.2rem 1.4rem; }
    .channel-card h4 { font-size: 1.05rem; }
    .channel-card p { white-space: nowrap; }
}

/* 过滤区：压缩底部空白、卡片等高丰满 */
.filter-section { padding: 6rem 0 5rem; }
.filter-demo { align-items: stretch; }
.filter-card {
    display: flex;
    flex-direction: column;
    padding: 1.8rem 1.6rem;
}
.filter-card .filter-example { margin-top: auto; padding-top: 1rem; }
.filter-example-break { flex-basis: 100%; height: 0; }
.filter-arrow { color: var(--text-muted, #64748b); font-size: 0.8rem; display: inline-flex; align-items: center; }
.kw-tag.kw-channel {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.35);
    color: #fbbf24;
}

/* 词云大气化：加宽加高 + 中心光晕氛围 */
.trends-section { padding: 90px 2rem 40px; }
.trends-section .hero-wordcloud { max-width: 1320px; }
.trends-section .wordcloud-wrapper {
    position: relative;
    border-radius: 24px;
    background:
        radial-gradient(ellipse 60% 55% at 50% 45%, rgba(99, 102, 241, 0.10), transparent 70%),
        radial-gradient(ellipse 45% 40% at 65% 60%, rgba(6, 182, 212, 0.06), transparent 70%);
}
.trends-section #wordcloudCanvas { height: 660px; }
.trends-section .wordcloud-legend { margin-top: 0.6rem; }

@media (max-width: 1080px) {
    .trends-section #wordcloudCanvas { height: 440px; }
}