/* ==========================================================================
   AutoKey · 按键精灵 企业级官网样式
   设计基调：浅色底 + 深邃蓝紫渐变 + 玻璃拟态 + 大留白 + 国际化科技产品风
   ========================================================================== */

:root {
    /* 品牌色 */
    --brand-50:  #eef4ff;
    --brand-100: #dbe6ff;
    --brand-500: #4f6bff;
    --brand-600: #3b4ff0;
    --brand-700: #2f3bd8;
    --violet-500: #7c3aed;
    --violet-600: #6d28d9;
    --pink-500: #ec4899;

    /* 深色底 */
    --ink-950: #08081d;
    --ink-900: #0d0d2b;
    --ink-800: #141438;
    --ink-700: #1e1e4a;

    /* 中性 */
    --slate-900: #0f172a;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-300: #cbd5e1;
    --slate-100: #f1f5f9;
    --slate-50:  #f8fafc;

    --white: #ffffff;

    /* 渐变 */
    --grad-main: linear-gradient(135deg, #4f6bff 0%, #7c3aed 50%, #ec4899 100%);
    --grad-sub:  linear-gradient(135deg, #3b4ff0 0%, #6d28d9 100%);
    --grad-text: linear-gradient(120deg, #4f6bff, #7c3aed 55%, #ec4899);

    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, .08);
    --shadow-md: 0 8px 30px rgba(15, 23, 42, .10);
    --shadow-lg: 0 20px 60px rgba(15, 23, 42, .14);
    --shadow-brand: 0 12px 40px rgba(79, 107, 255, .28);

    /* 圆角 */
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 999px;

    --font-display: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
    --font-body: 'Inter', 'Noto Sans SC', system-ui, sans-serif;

    --header-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--slate-600);
    background: var(--slate-50);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all .25s ease;
    white-space: nowrap;
}
.btn i { font-size: 16px; }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-lg { padding: 16px 34px; font-size: 16px; }
.btn-block { width: 100%; }

.btn-primary { background: var(--grad-sub); color: #fff; box-shadow: var(--shadow-brand); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 50px rgba(79,107,255,.4); }

.btn-ghost { background: rgba(255,255,255,.06); color: #fff; border-color: rgba(255,255,255,.18); backdrop-filter: blur(8px); }
.btn-ghost:hover { background: rgba(255,255,255,.14); }

.btn-glass { background: rgba(255,255,255,.92); color: var(--brand-600); box-shadow: var(--shadow-md); }
.btn-glass:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.btn-outline { background: #fff; color: var(--brand-600); border-color: var(--brand-100); }
.btn-outline:hover { border-color: var(--brand-500); background: var(--brand-50); }

.btn-light { background: #fff; color: var(--brand-700); box-shadow: 0 12px 40px rgba(0,0,0,.2); }
.btn-light:hover { transform: translateY(-2px); }

.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-outline-light:hover { background: rgba(255,255,255,.12); border-color: #fff; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-h);
    z-index: 100;
    background: rgba(8, 8, 29, .82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255,255,255,.08);
    transition: all .3s ease;
}
.site-header.scrolled { background: rgba(8,8,29,.94); box-shadow: 0 8px 30px rgba(0,0,0,.2); }

.nav-wrap {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { width: 40px; height: 40px; object-fit: contain; filter: drop-shadow(0 4px 12px rgba(236,72,153,.4)); }
.brand-text { font-family: var(--font-display); font-weight: 800; font-size: 20px; color: #fff; letter-spacing: -.5px; }
.brand-sub { font-weight: 500; font-size: 14px; color: var(--slate-300); margin-left: 6px; }

.main-nav { display: flex; gap: 6px; }
.nav-link {
    padding: 8px 16px;
    color: var(--slate-300);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all .2s;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,.08); }

.nav-actions { display: flex; gap: 10px; }

.nav-toggle {
    display: none;
    background: none; border: none;
    color: #fff; font-size: 28px;
    cursor: pointer;
    padding: 6px;
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
    position: relative;
    background: linear-gradient(180deg, #08081d 0%, #0d0d2b 55%, #141438 100%);
    color: #fff;
    padding: calc(var(--header-h) + 70px) 0 0;
    overflow: hidden;
}
.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: .5;
    pointer-events: none;
}
.hero-glow-1 { width: 520px; height: 520px; background: radial-gradient(circle, #4f6bff, transparent 70%); top: -120px; left: -100px; }
.hero-glow-2 { width: 420px; height: 420px; background: radial-gradient(circle, #ec4899, transparent 70%); bottom: -80px; right: -80px; }

.hero-inner { position: relative; text-align: center; max-width: 900px; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 20px;
    border-radius: var(--radius-full);
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.12);
    font-size: 14px;
    color: var(--slate-300);
    margin-bottom: 28px;
    backdrop-filter: blur(8px);
}
.hero-badge i { color: #fbbf24; }

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(40px, 6vw, 68px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 24px;
}
.grad-text {
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    font-size: clamp(17px, 2vw, 20px);
    color: var(--slate-300);
    max-width: 720px;
    margin: 0 auto 36px;
    line-height: 1.8;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }

.hero-trust {
    display: flex; justify-content: center; gap: 28px; flex-wrap: wrap;
    margin-bottom: 56px;
}
.hero-trust span { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--slate-300); }
.hero-trust i { color: #6ee7b7; font-size: 16px; }

.hero-visual { position: relative; max-width: 860px; margin: 0 auto; padding: 0 10px; }
.mock-window {
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    backdrop-filter: blur(20px);
}
.mock-bar {
    display: flex; align-items: center; gap: 8px;
    padding: 14px 18px;
    background: rgba(255,255,255,.04);
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #f87171; }
.dot.yellow { background: #fbbf24; }
.dot.green { background: #34d399; }
.mock-title { margin-left: 12px; color: var(--slate-300); font-size: 13px; display: inline-flex; align-items: center; gap: 6px; }

.mock-body { padding: 26px 22px; display: flex; flex-direction: column; gap: 12px; }
.mock-step {
    display: flex; align-items: center; gap: 14px;
    padding: 14px 18px;
    background: rgba(255,255,255,.05);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,.06);
    font-size: 15px; color: var(--slate-100);
}
.mock-step.active { border-color: rgba(79,107,255,.5); background: rgba(79,107,255,.12); box-shadow: 0 0 0 3px rgba(79,107,255,.15); }
.step-icon { font-size: 20px; color: var(--brand-500); }
.mock-step .step-tag {
    margin-left: auto;
    font-size: 12px; color: var(--slate-300);
    background: rgba(255,255,255,.08);
    padding: 4px 12px; border-radius: var(--radius-full);
}
.mock-ai {
    display: flex; align-items: center; gap: 8px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(124,58,237,.2), rgba(236,72,153,.2));
    border: 1px solid rgba(236,72,153,.3);
    color: #fbcfe8; font-size: 14px; font-weight: 600;
}
.mock-ai i { color: #fbbf24; }

/* Hero metrics */
.hero-metrics {
    position: relative;
    margin-top: 64px;
    background: rgba(255,255,255,.04);
    border-top: 1px solid rgba(255,255,255,.08);
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.metrics-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 36px 0; }
.metric { text-align: center; }
.metric-num { font-family: var(--font-display); font-size: clamp(28px, 4vw, 40px); font-weight: 800; color: #fff; }
.metric-mini { font-size: 18px; color: var(--slate-300); }
.metric-label { font-size: 14px; color: var(--slate-300); margin-top: 6px; }

/* ==========================================================================
   Sections
   ========================================================================== */
.section { padding: 100px 0; }
.section.alt { background: #fff; border-top: 1px solid var(--slate-100); border-bottom: 1px solid var(--slate-100); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.eyebrow {
    display: inline-block;
    font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
    color: var(--brand-600);
    background: var(--brand-50);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}
.section-title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    color: var(--slate-900);
    letter-spacing: -.5px;
    line-height: 1.2;
    margin-bottom: 16px;
}
.grad-ic { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.section-desc { font-size: 17px; color: var(--slate-500); }

/* ==========================================================================
   Cards (grid-3)  — 产品作用
   ========================================================================== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card { padding: 34px 30px; border-radius: var(--radius-lg); transition: all .3s ease; }
.card.glass { background: #fff; border: 1px solid var(--slate-100); box-shadow: var(--shadow-sm); }
.card.glass:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--brand-100); }
.card-ic {
    width: 56px; height: 56px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 26px; color: #fff;
    margin-bottom: 20px;
}
.grad-bg { background: var(--grad-sub); box-shadow: var(--shadow-brand); }
.card h3 { font-size: 20px; font-weight: 700; color: var(--slate-900); margin-bottom: 10px; }
.card p { font-size: 15px; color: var(--slate-500); }

/* ==========================================================================
   Scenarios
   ========================================================================== */
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scenario-card {
    position: relative;
    padding: 30px;
    border-radius: var(--radius-md);
    background: var(--slate-50);
    border: 1px solid var(--slate-100);
    transition: all .3s;
}
.scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); background: #fff; }
.scenario-ic { font-size: 32px; margin-bottom: 14px; background: var(--grad-sub); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.scenario-card h4 { font-size: 18px; font-weight: 700; color: var(--slate-900); margin-bottom: 8px; }
.scenario-card p { font-size: 14px; color: var(--slate-500); }
.scenario-card .tag {
    display: inline-block; margin-top: 14px;
    font-size: 12px; color: var(--brand-600);
    background: var(--brand-50);
    padding: 3px 12px; border-radius: var(--radius-full);
}

/* ==========================================================================
   Features
   ========================================================================== */
.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 90px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-row.reverse .feature-media { order: 2; }
.feature-row.reverse .feature-copy { order: 1; }

.feature-media { display: flex; justify-content: center; }
.feat-panel {
    width: 100%; max-width: 460px;
    padding: 34px;
    background: linear-gradient(160deg, #fff, var(--brand-50));
    border: 1px solid var(--brand-100);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}
.feat-panel.ai-panel { background: linear-gradient(160deg, #fff, #f5f3ff); border-color: #ede9fe; }
.feat-title { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; color: var(--slate-900); margin-bottom: 20px; }
.feat-title i { color: var(--brand-500); font-size: 22px; }

.feat-list { display: flex; flex-direction: column; gap: 12px; }
.feat-item {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 18px;
    background: #fff; border-radius: var(--radius-sm);
    border: 1px solid var(--slate-100);
    font-weight: 600; color: var(--slate-700);
}
.feat-item i { color: var(--brand-500); }

.ai-chat { display: flex; flex-direction: column; gap: 12px; }
.chat-q, .chat-a { padding: 14px 18px; border-radius: var(--radius-md); font-size: 14px; }
.chat-q { background: var(--ink-800); color: #fff; border-top-left-radius: 4px; display: flex; gap: 10px; }
.chat-q span { color: #93a4ff; font-weight: 700; }
.chat-a { background: #fff; border: 1px solid var(--slate-100); color: var(--slate-600); border-top-right-radius: 4px; display: flex; gap: 10px; }
.chat-a span { color: var(--violet-500); font-weight: 700; }

.privacy-icons { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.privacy-icons span {
    display: flex; align-items: center; gap: 10px;
    padding: 18px;
    background: #fff; border-radius: var(--radius-sm);
    border: 1px solid var(--slate-100);
    font-weight: 600; color: var(--slate-700);
}
.privacy-icons i { color: #34d399; font-size: 20px; }

.feat-note {
    margin-top: 18px;
    padding: 12px 16px;
    background: rgba(255,255,255,.7);
    border: 1px dashed #c7d2fe;
    border-radius: var(--radius-sm);
    font-size: 13px; color: var(--slate-500);
    display: flex; align-items: center; gap: 8px;
}
.feat-note i { color: var(--brand-500); }

.feature-copy h3 { font-size: 26px; font-weight: 800; color: var(--slate-900); margin-bottom: 18px; letter-spacing: -.3px; }
.feature-copy p { font-size: 16px; color: var(--slate-500); margin-bottom: 20px; }

.check-list { display: flex; flex-direction: column; gap: 12px; }
.check-list li { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--slate-700); font-weight: 500; }
.check-list i { color: #22c55e; font-size: 20px; }

/* ==========================================================================
   Pricing
   ========================================================================== */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; align-items: stretch; }
.price-card {
    position: relative;
    padding: 38px 32px;
    background: #fff;
    border: 1px solid var(--slate-100);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex; flex-direction: column;
    transition: all .3s;
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.price-card.popular {
    background: linear-gradient(180deg, var(--ink-900), var(--ink-800));
    border-color: transparent;
    box-shadow: var(--shadow-lg);
    color: #fff;
    transform: scale(1.03);
}
.price-card.popular:hover { transform: scale(1.03) translateY(-6px); }
.popular-tag {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: var(--grad-main); color: #fff;
    font-size: 13px; font-weight: 700;
    padding: 6px 18px; border-radius: var(--radius-full);
    white-space: nowrap; box-shadow: var(--shadow-brand);
}
.price-name { font-size: 16px; font-weight: 700; color: var(--slate-600); margin-bottom: 10px; }
.price-card.popular .price-name { color: var(--slate-300); }
.price-num { font-family: var(--font-display); font-size: 46px; font-weight: 800; color: var(--slate-900); letter-spacing: -1px; }
.price-card.popular .price-num { color: #fff; }
.price-unit { font-size: 16px; font-weight: 500; color: var(--slate-500); letter-spacing: 0; }
.price-card.popular .price-unit { color: var(--slate-300); }
.price-desc { font-size: 14px; color: var(--slate-500); margin: 8px 0 24px; }
.price-card.popular .price-desc { color: var(--slate-300); }

.price-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 30px; flex: 1; }
.price-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; color: var(--slate-600); }
.price-card.popular .price-list li { color: var(--slate-300); }
.price-list i { color: var(--brand-500); margin-top: 3px; }
.price-card.popular .price-list i { color: #6ee7b7; }

.pricing-note { text-align: center; margin-top: 36px; font-size: 14px; color: var(--slate-500); display: flex; align-items: center; justify-content: center; gap: 8px; }
.pricing-note i { color: #22c55e; }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: #fff; border: 1px solid var(--slate-100); border-radius: var(--radius-md); overflow: hidden; transition: box-shadow .3s; }
.faq-item.open { box-shadow: var(--shadow-sm); border-color: var(--brand-100); }
.faq-q {
    width: 100%;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 20px 24px;
    background: none; border: none; cursor: pointer;
    font-size: 16px; font-weight: 600; color: var(--slate-900); text-align: left;
}
.faq-q i { transition: transform .3s; color: var(--brand-500); }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { padding: 0 24px 22px; font-size: 15px; color: var(--slate-500); }

/* ==========================================================================
   CTA
   ========================================================================== */
.cta-section {
    background: var(--grad-sub);
    padding: 90px 0;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: "";
    position: absolute;
    top: -60%; right: -10%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(236,72,153,.4), transparent 70%);
    filter: blur(80px);
}
.cta-inner { position: relative; text-align: center; }
.cta-title { font-family: var(--font-display); font-size: clamp(28px, 4vw, 40px); font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: -.5px; }
.cta-desc { font-size: 17px; color: rgba(255,255,255,.85); max-width: 620px; margin: 0 auto 36px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-card {
    display: flex; align-items: center; gap: 18px;
    padding: 26px;
    background: #fff;
    border: 1px solid var(--slate-100);
    border-radius: var(--radius-md);
    transition: all .3s;
}
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--brand-100); }
.contact-card i { font-size: 28px; background: var(--grad-sub); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; flex-shrink: 0; }
.contact-card h4 { font-size: 16px; font-weight: 700; color: var(--slate-900); margin-bottom: 2px; }
.contact-card p { font-size: 13px; color: var(--slate-500); word-break: break-all; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--ink-950); color: var(--slate-300); padding: 70px 0 40px; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 2fr; gap: 50px; }
.footer-brand .footer-logo { width: 48px; height: 48px; object-fit: contain; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; margin-bottom: 8px; }
.footer-copy { color: var(--slate-500); }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col a, .footer-col p { display: block; font-size: 14px; color: var(--slate-300); margin-bottom: 12px; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-col i { margin-right: 8px; color: var(--brand-500); }

/* ==========================================================================
   Back to top
   ========================================================================== */
.back-top {
    position: fixed; right: 28px; bottom: 28px;
    width: 48px; height: 48px;
    border-radius: 50%;
    border: none; cursor: pointer;
    background: var(--grad-sub); color: #fff;
    font-size: 20px;
    box-shadow: var(--shadow-brand);
    opacity: 0; visibility: hidden; transform: translateY(20px);
    transition: all .3s;
    z-index: 99;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 992px) {
    .main-nav, .nav-actions { display: none; }
    .nav-toggle { display: block; }

    .main-nav.open {
        position: absolute; top: var(--header-h); left: 0; right: 0;
        display: flex; flex-direction: column; gap: 4px;
        background: var(--ink-900);
        padding: 20px;
        border-bottom: 1px solid rgba(255,255,255,.08);
    }
    .main-nav.open .nav-link { padding: 14px 16px; font-size: 16px; }
    .nav-actions.mobile {
        display: flex; flex-direction: column; gap: 10px;
        padding: 0 20px 20px;
        background: var(--ink-900);
    }

    .grid-3, .scenario-grid, .pricing-grid { grid-template-columns: 1fr 1fr; }
    .feature-row { grid-template-columns: 1fr; gap: 40px; }
    .feature-row.reverse .feature-media { order: 1; }
    .feature-row.reverse .feature-copy { order: 2; }
    .metrics-row { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .contact-grid { grid-template-columns: 1fr 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .section { padding: 70px 0; }
    .grid-3, .scenario-grid, .pricing-grid, .contact-grid { grid-template-columns: 1fr; }
    .pricing-grid .price-card.popular { transform: none; }
    .hero { padding-top: calc(var(--header-h) + 40px); }
    .metrics-row { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-cols { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }