/* ============================================
   CertMeta.cn — 样式表
   设计系统：科技极简蓝色调
   ============================================ */

:root {
    --color-bg:           #0A1628;
    --color-bg-alt:       #FFFFFF;
    --color-surface:      #F5F8FC;
    --color-primary:      #0066FF;
    --color-primary-hover:#0052CC;
    --color-accent:       #00D4FF;
    --color-text:         #0A1628;
    --color-text-muted:   #5A6B80;
    --color-text-invert:  #FFFFFF;
    --color-border:       #E1E8F0;
    --color-warn:         #FF9500;
    --color-ok:           #00C896;

    --gradient-primary: linear-gradient(135deg, #0066FF 0%, #00D4FF 100%);
    --gradient-dark:    linear-gradient(180deg, #0A1628 0%, #152842 100%);

    --shadow-sm:  0 1px 2px rgba(10, 22, 40, 0.04);
    --shadow-md:  0 4px 12px rgba(10, 22, 40, 0.06);
    --shadow-lg:  0 16px 40px rgba(10, 22, 40, 0.08);
    --shadow-xl:  0 24px 60px rgba(10, 22, 40, 0.12);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --font-base: "PingFang SC", "Microsoft YaHei", "Helvetica Neue",
                 system-ui, -apple-system, sans-serif;

    --container-max: 1200px;
    --nav-height: 68px;
}

/* ============ Reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: var(--font-base);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg-alt);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
h1, h2, h3, h4, p, ul { margin: 0; padding: 0; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; transition: color 0.2s; }
button { font: inherit; border: none; background: none; cursor: pointer; color: inherit; }
img, svg { display: block; max-width: 100%; }

/* ============ 容器与通用 ============ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}
.section { padding: 96px 0; position: relative; }
.section-alt { background: var(--color-surface); }

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

.section-header {
    max-width: 720px;
    margin: 0 auto 64px;
    text-align: center;
}
.eyebrow {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(0, 102, 255, 0.08);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.4px;
    margin-bottom: 16px;
}
.section-title {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.5px;
    color: var(--color-text);
    margin-bottom: 16px;
}
.section-sub {
    font-size: 17px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============ 按钮 ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(0, 102, 255, 0.3);
}
.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
}
.btn-ghost {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.btn-ghost:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(0, 102, 255, 0.04);
}
.btn-ghost.btn-light {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.24);
}
.btn-ghost.btn-light:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}

/* ============ 导航 ============ */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    z-index: 100;
    background: rgba(10, 22, 40, 0);
    backdrop-filter: blur(0);
    transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}
.nav.scrolled {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    box-shadow: 0 1px 0 rgba(10, 22, 40, 0.06), var(--shadow-md);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 20px;
    color: #fff;
    transition: color 0.3s ease;
}
.nav.scrolled .nav-logo { color: var(--color-text); }
.logo-icon { width: 28px; height: 28px; flex-shrink: 0; }
.nav-menu {
    display: flex;
    gap: 36px;
    align-items: center;
}
.nav-menu a {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    transition: color 0.2s;
}
.nav-menu a:hover { color: #fff; }
.nav.scrolled .nav-menu a { color: var(--color-text-muted); }
.nav.scrolled .nav-menu a:hover { color: var(--color-primary); }

.nav-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}
.nav .btn-ghost {
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.2);
}
.nav .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
}
.nav.scrolled .btn-ghost {
    color: var(--color-text);
    border-color: var(--color-border);
}
.nav.scrolled .btn-ghost:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(0, 102, 255, 0.04);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s, background 0.3s;
}
.nav.scrolled .nav-toggle span { background: var(--color-text); }
.nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
    position: relative;
    padding: calc(var(--nav-height) + 80px) 0 120px;
    color: #fff;
    overflow: hidden;
    background: var(--gradient-dark);
}
.hero-bg {
    position: absolute; inset: 0;
    pointer-events: none;
    overflow: hidden;
}
.hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.08) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 80%);
}
.hero-glow {
    position: absolute;
    top: -20%; right: -10%;
    width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.35) 0%, transparent 65%);
    border-radius: 50%;
    filter: blur(40px);
}
.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 64px;
    align-items: center;
}
.hero-content { max-width: 620px; }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(0, 212, 255, 0.12);
    border: 1px solid rgba(0, 212, 255, 0.25);
    color: var(--color-accent);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}
.badge-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 8px var(--color-accent);
    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: 56px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 24px;
}
.hero-subtitle {
    font-size: 18px;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 36px;
}
.hero-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}
.hero .btn-ghost {
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.25);
}
.hero .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}

.hero-trust {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
}
.hero-trust > span { color: rgba(255, 255, 255, 0.5); }
.trust-dots {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}
.trust-dots span { margin: 0 4px; }

/* ============ Hero Dashboard Visual ============ */
.hero-visual {
    position: relative;
    perspective: 1400px;
}
.dashboard {
    position: relative;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-xl), 0 0 60px rgba(0, 102, 255, 0.2);
    transform: rotateY(-6deg) rotateX(4deg);
    transform-origin: center;
}
.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 16px;
}
.dashboard-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 14px;
    color: #fff;
}
.dashboard-title svg { color: var(--color-accent); }
.dashboard-dots { display: flex; gap: 6px; }
.dashboard-dots span {
    width: 10px; height: 10px; border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
}
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}
.stat-pill {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 12px 14px;
}
.stat-pill.warn { border-color: rgba(255, 149, 0, 0.3); background: rgba(255, 149, 0, 0.08); }
.stat-pill.ok { border-color: rgba(0, 200, 150, 0.3); background: rgba(0, 200, 150, 0.08); }
.stat-num {
    display: block;
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}
.stat-label {
    display: block;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 4px;
}

.cert-list { display: flex; flex-direction: column; gap: 8px; }
.cert-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    gap: 12px;
}
.cert-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.cert-domain {
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    font-family: "SF Mono", Monaco, Consolas, monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.cert-meta {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
}
.cert-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-ok);
    white-space: nowrap;
}
.cert-status.warn { color: var(--color-warn); }
.pulse {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--color-ok);
    box-shadow: 0 0 8px var(--color-ok);
    animation: pulse 2s infinite;
}
.pulse.warn {
    background: var(--color-warn);
    box-shadow: 0 0 8px var(--color-warn);
}

.float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    animation: float 6s ease-in-out infinite;
}
.float-card-1 { top: -20px; left: -30px; }
.float-card-2 { bottom: 40px; right: -30px; animation-delay: -3s; }
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ============ 生命周期时间线 ============ */
.section-lifecycle { background: var(--color-surface); }
.timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin: 0 auto 72px;
    max-width: 900px;
    padding: 32px 0;
}
.timeline-line {
    position: absolute;
    top: 58px; left: 10%; right: 10%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-border), var(--color-primary), var(--color-accent));
    z-index: 0;
}
.timeline-item {
    position: relative;
    text-align: center;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.timeline-dot {
    width: 20px; height: 20px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--color-border);
    margin-bottom: 20px;
    transition: all 0.3s;
}
.timeline-item.highlight .timeline-dot {
    background: var(--gradient-primary);
    border-color: transparent;
    box-shadow: 0 0 0 6px rgba(0, 102, 255, 0.15), 0 4px 20px rgba(0, 102, 255, 0.4);
    transform: scale(1.2);
}
.timeline-year {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 8px;
    font-weight: 500;
}
.timeline-days {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
}
.timeline-days span {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-left: 2px;
}
.timeline-item.highlight .timeline-days {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.timeline-desc {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 6px;
}

/* ============ 栅格 ============ */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ============ Impact Card（生命周期影响卡） ============ */
.impact-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s;
}
.impact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.impact-icon {
    width: 52px; height: 52px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: #fff;
    margin-bottom: 20px;
}
.impact-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-text);
}
.impact-card p {
    font-size: 15px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============ Service Card ============ */
.service-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
    width: 48px; height: 48px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(0, 102, 255, 0.08);
    color: var(--color-primary);
    margin-bottom: 20px;
}
.service-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}
.service-card > p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
}
.service-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px dashed var(--color-border);
}
.service-list li {
    font-size: 13px;
    color: var(--color-text-muted);
    padding-left: 18px;
    position: relative;
}
.service-list li::before {
    content: '';
    position: absolute;
    left: 0; top: 10px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

/* ============ 订阅方案（Pricing） ============ */
.billing-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    margin: 0 auto 48px;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: var(--shadow-sm);
}
.billing-option {
    position: relative;
    padding: 8px 24px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: all 0.25s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.billing-option:hover { color: var(--color-text); }
.billing-option.active {
    background: var(--color-text);
    color: #fff;
    box-shadow: 0 2px 8px rgba(10, 22, 40, 0.15);
}
.billing-save {
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(0, 200, 150, 0.15);
    color: var(--color-ok);
    font-weight: 600;
}
.billing-option.active .billing-save {
    background: rgba(0, 212, 255, 0.25);
    color: var(--color-accent);
}

.pricing-grid {
    align-items: stretch;
}
.pricing-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    display: flex;
    flex-direction: column;
    transition: all 0.3s;
}
.pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.pricing-featured {
    border-color: var(--color-primary);
    box-shadow: 0 8px 32px rgba(0, 102, 255, 0.12);
    transform: translateY(-8px);
}
.pricing-featured:hover {
    transform: translateY(-12px);
    box-shadow: 0 16px 48px rgba(0, 102, 255, 0.2);
}
.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 14px;
    border-radius: 999px;
    background: var(--gradient-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
    white-space: nowrap;
}

.pricing-head { margin-bottom: 28px; }
.pricing-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}
.pricing-name-free { color: var(--color-text); }
.pricing-name-pro { color: var(--color-primary); }
.pricing-name-enterprise {
    background: linear-gradient(135deg, #7B3FF2 0%, #0066FF 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.pricing-desc {
    font-size: 13.5px;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 28px;
    min-height: 44px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 2px;
}
.price-currency {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text);
}
.price-num {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
    letter-spacing: -1px;
    transition: color 0.3s;
}
.price-unit {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-left: 4px;
}

.pricing-btn { margin-bottom: 32px; }

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    flex: 1;
}
.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14.5px;
    color: var(--color-text);
    line-height: 1.5;
}
.check-icon {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1.5px solid var(--color-ok);
    color: var(--color-ok);
}

/* ============ 企业定制条 ============ */
.enterprise-strip {
    margin-top: 56px;
    padding: 32px 40px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}
.enterprise-strip::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 10% 50%, rgba(0, 102, 255, 0.3), transparent 40%),
        radial-gradient(circle at 90% 50%, rgba(123, 63, 242, 0.25), transparent 40%);
    pointer-events: none;
}
.enterprise-strip-content {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    color: #fff;
    flex-wrap: wrap;
}
.enterprise-strip h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #fff;
}
.enterprise-strip p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.72);
    line-height: 1.6;
}
.enterprise-strip .btn { flex-shrink: 0; }

.beian-link {
    color: inherit;
    transition: color 0.2s;
}
.beian-link:hover { color: var(--color-accent); }

/* ============ Feature Card（周边服务） ============ */
.feature-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all 0.3s;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}
.feature-icon {
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 212, 255, 0.1));
    color: var(--color-primary);
    margin-bottom: 18px;
}
.feature-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}
.feature-card p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============ Scene Card（适用场景） ============ */
.scene-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    border: 1px solid var(--color-border);
    transition: all 0.3s;
    position: relative;
}
.scene-card:hover {
    background: var(--color-bg);
    color: #fff;
    border-color: transparent;
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(10, 22, 40, 0.2);
}
.scene-card:hover h3 { color: #fff; }
.scene-card:hover p { color: rgba(255, 255, 255, 0.8); }
.scene-card:hover .scene-number {
    color: var(--color-accent);
    -webkit-text-fill-color: var(--color-accent);
}
.scene-number {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    transition: all 0.3s;
}
.scene-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    transition: color 0.3s;
}
.scene-card p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
    transition: color 0.3s;
}

/* ============ 信任区 ============ */
.trust-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    padding: 48px 40px;
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
}
.trust-stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 10% 20%, rgba(0, 102, 255, 0.3), transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 212, 255, 0.2), transparent 40%);
    pointer-events: none;
}
.trust-stat {
    text-align: center;
    color: #fff;
    position: relative;
    z-index: 1;
}
.trust-num {
    font-size: 42px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    line-height: 1;
    margin-bottom: 8px;
}
.trust-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.ca-logos { text-align: center; }
.ca-logos-title {
    display: block;
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}
.ca-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    align-items: center;
}
.ca-item {
    padding: 12px 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--color-text-muted);
    font-size: 15px;
    transition: all 0.2s;
}
.ca-item:hover {
    background: #fff;
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

/* ============ 最终 CTA ============ */
.cta-section {
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
    padding: 120px 0;
}
.cta-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(0, 102, 255, 0.35), transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(0, 212, 255, 0.25), transparent 50%);
    pointer-events: none;
}
.cta-inner {
    position: relative;
    text-align: center;
    max-width: 720px;
    color: #fff;
}
.cta-title {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 20px;
}
.cta-sub {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 36px;
}
.cta-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============ 页脚 ============ */
.footer {
    background: #06101D;
    color: rgba(255, 255, 255, 0.6);
    padding: 80px 0 32px;
    font-size: 14px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr repeat(4, 1fr);
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .nav-logo { color: #fff; margin-bottom: 16px; }
.footer-tagline {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.7;
    max-width: 320px;
}
.footer-col h4 {
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}
.footer-col a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    transition: color 0.2s;
}
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}
.footer-bottom-right span { margin: 0 2px; }

/* ============ 滚动渐入动画 ============ */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
    opacity: 1;
    transform: none;
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; gap: 80px; }
    .hero-visual { max-width: 520px; margin: 0 auto; }
    .dashboard { transform: none; }
    .hero-title { font-size: 44px; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .trust-stats { grid-template-columns: repeat(2, 1fr); }
    .section-title { font-size: 36px; }
    .cta-title { font-size: 40px; }
    .pricing-grid { grid-template-columns: 1fr; gap: 20px; max-width: 520px; margin: 0 auto; }
    .pricing-featured { transform: none; }
    .pricing-featured:hover { transform: translateY(-4px); }
    .enterprise-strip-content { justify-content: center; text-align: center; }
}

@media (max-width: 768px) {
    .nav-menu, .nav-actions { display: none; }
    .nav-toggle { display: flex; }
    .nav-menu.open {
        display: flex;
        position: absolute;
        top: var(--nav-height);
        left: 0; right: 0;
        flex-direction: column;
        background: #fff;
        padding: 20px 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--color-border);
    }
    .nav-menu.open a { color: var(--color-text); }
    .nav-menu.open a:hover { color: var(--color-primary); }
}

@media (max-width: 640px) {
    .section { padding: 64px 0; }
    .section-header { margin-bottom: 40px; }
    .hero { padding-top: calc(var(--nav-height) + 48px); padding-bottom: 72px; }
    .hero-title { font-size: 32px; letter-spacing: -0.5px; }
    .hero-subtitle { font-size: 16px; }
    .hero-actions .btn { flex: 1; justify-content: center; }
    .section-title { font-size: 28px; }
    .cta-title { font-size: 32px; }
    .cta-sub { font-size: 15px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .timeline { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
    .timeline-line { display: none; }
    .trust-stats { grid-template-columns: repeat(2, 1fr); padding: 32px 20px; gap: 24px; }
    .trust-num { font-size: 32px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; }
    .pricing-card { padding: 32px 24px; }
    .price-num { font-size: 42px; }
    .enterprise-strip { padding: 28px 24px; }
    .enterprise-strip h3 { font-size: 18px; }
    .billing-option { padding: 8px 18px; font-size: 13px; }
    .float-card { display: none; }
    .dashboard { padding: 16px; }
    .dashboard-stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .stat-pill { padding: 8px; }
    .stat-num { font-size: 18px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .reveal { opacity: 1; transform: none; }
}