/* ============================================
   СмартООПТ — styles.css
   Тёплый корпоративный + контрастные секции
   ============================================ */

/* --- Variables --- */
:root {
    --stone-950: #1c1917;
    --stone-900: #292524;
    --stone-800: #44403c;
    --stone-700: #57534e;
    --stone-500: #78716c;
    --stone-400: #a8a29e;
    --stone-300: #d6d3d1;
    --stone-200: #e7e5e4;
    --stone-100: #f5f5f4;
    --stone-50: #fafaf9;
    --white: #ffffff;

    --green-800: #166534;
    --green-700: #15803d;
    --green-600: #16a34a;
    --green-500: #22c55e;
    --green-100: #86efac;
    --green-50: #f0fdf4;

    --section-blue: #1e6fa0;
    --section-blue-light: #2487c4;
    --section-dark: #1e2328;
    --section-dark-card: #272d33;

    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'DM Serif Display', Georgia, serif;

    --shadow-xs: 0 1px 2px rgba(0,0,0,.04);
    --shadow-sm: 0 2px 8px rgba(0,0,0,.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,.07);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.1);
    --shadow-xl: 0 24px 60px rgba(0,0,0,.12);

    --radius: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font-body);
    color: var(--stone-900);
    background: var(--stone-50);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; }

/* ============================================
   HEADER
   ============================================ */
.header {
    position: fixed; top: 0; width: 100%; z-index: 100;
    padding: 4px 0;
    transition: background .4s, box-shadow .4s, padding .3s;
}
.header.scrolled {
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-sm);
    padding: 0;
}
.header-inner {
    max-width: 1160px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
}

/* Logo */
.logo {
    font-family: var(--font-display); font-size: 24px;
    color: var(--white); text-decoration: none;
    display: flex; align-items: center; gap: 8px;
    transition: color .3s;
}
.header.scrolled .logo { color: var(--stone-900); }
.logo-highlight { color: var(--green-500); }
.header.scrolled .logo-highlight { color: var(--green-600); }
.logo-icon-wrapper { display: flex; align-items: center; }
.logo-icon { width: 28px; height: 28px; }
.logo-text { white-space: nowrap; }

/* Nav */
.nav { display: flex; gap: 28px; align-items: center; }
.nav-link {
    color: rgba(255,255,255,.7); text-decoration: none;
    font-size: 14px; font-weight: 500; transition: color .2s;
}
.nav-link:hover { color: var(--white); }
.header.scrolled .nav-link { color: var(--stone-500); }
.header.scrolled .nav-link:hover { color: var(--stone-900); }
.nav-cta {
    background: var(--green-600); color: var(--white) !important;
    padding: 9px 22px; border-radius: 10px; font-weight: 600;
    transition: background .2s, transform .2s;
}
.nav-cta:hover { background: var(--green-700); transform: translateY(-1px); }

/* Burger */
.burger {
    display: none; background: none; border: none;
    cursor: pointer; flex-direction: column; gap: 5px; padding: 8px;
}
.burger span {
    display: block; width: 22px; height: 2px;
    background: var(--white); border-radius: 2px;
    transition: background .3s;
}
.header.scrolled .burger span { background: var(--stone-900); }

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    position: relative; overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    background-color: var(--stone-800);
}
.hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(28,25,23,.78) 0%, rgba(28,25,23,.5) 50%, rgba(22,163,74,.12) 100%);
}
.hero-grid {
    position: relative; z-index: 2;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 60px; align-items: center;
}
.hero-overline {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.15);
    backdrop-filter: blur(8px); color: var(--green-100);
    font-size: .82rem; font-weight: 600; padding: 7px 18px;
    border-radius: 100px; margin-bottom: 20px;
}
.hero-dot {
    width: 8px; height: 8px; background: var(--green-500);
    border-radius: 50%; animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4.2vw, 3.2rem);
    line-height: 1.2; color: var(--white); margin-bottom: 20px;
}
.hero h1 em { font-style: normal; color: var(--green-500); }
.hero-desc {
    font-size: 1.1rem; color: rgba(255,255,255,.7);
    margin-bottom: 36px; max-width: 500px; line-height: 1.7;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-hero {
    background: var(--green-600); color: var(--white);
    padding: 15px 34px; border-radius: 12px;
    font-weight: 700; font-size: 1rem; font-family: var(--font-body);
    transition: .25s; display: inline-flex; align-items: center; gap: 8px;
    box-shadow: 0 4px 16px rgba(22,163,74,.3); border: none; cursor: pointer;
}
.btn-hero:hover {
    background: var(--green-500); transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(22,163,74,.35);
}
.btn-hero-outline {
    border: 1.5px solid rgba(255,255,255,.3); color: var(--white);
    padding: 15px 34px; border-radius: 12px;
    font-weight: 600; font-size: 1rem; transition: .25s;
    backdrop-filter: blur(4px); background: transparent;
}
.btn-hero-outline:hover {
    background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.5);
}
.hero-stats {
    display: flex; gap: 36px; margin-top: 48px;
    padding-top: 32px; border-top: 1px solid rgba(255,255,255,.12);
}
.hs-num {
    font-family: var(--font-display); font-size: 2rem;
    color: var(--green-500); line-height: 1;
}
.hs-label { font-size: .8rem; color: rgba(255,255,255,.45); margin-top: 6px; }

/* Hero visual */
.hero-visual { position: relative; }
.hero-mockup {
    border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid rgba(255,255,255,.1);
    box-shadow: var(--shadow-xl);
    background: rgba(255,255,255,.06);
}
.hero-mockup img { width: 100%; display: block; }
.hero-float-badge {
    position: absolute; bottom: -16px; left: -16px;
    background: var(--white); border-radius: 14px;
    padding: 14px 18px; display: flex; align-items: center; gap: 12px;
    box-shadow: var(--shadow-lg);
}
.hfb-icon {
    width: 40px; height: 40px; background: var(--green-100);
    border-radius: 10px; display: flex; align-items: center;
    justify-content: center; font-size: 18px; color: var(--green-700);
}
.hfb-text { font-size: .82rem; color: var(--stone-500); }
.hfb-text strong { display: block; color: var(--stone-900); font-size: .95rem; }

/* ============================================
   TRUST BAR
   ============================================ */
.trust-bar {
    background: var(--white);
    padding: 28px 0;
    border-bottom: 1px solid var(--stone-200);
}
.trust-items {
    display: flex; justify-content: center; gap: 48px; flex-wrap: wrap;
}
.trust-item {
    display: flex; align-items: center; gap: 10px;
}
.ti-icon {
    width: 36px; height: 36px; background: var(--green-50);
    border-radius: 8px; display: flex; align-items: center;
    justify-content: center; font-size: 15px; color: var(--green-700);
    flex-shrink: 0;
}
.ti-text {
    font-size: .85rem; font-weight: 600; color: var(--stone-700);
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header { text-align: center; margin-bottom: 56px; }
.section-header--left { text-align: left; }
.section-tag {
    display: inline-block; background: var(--green-50); color: var(--green-700);
    font-size: .75rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 2.5px; padding: 5px 16px; border-radius: 8px; margin-bottom: 14px;
}
.section-tag--light { background: rgba(255,255,255,.15); color: rgba(255,255,255,.8); }
.section-tag--dark { background: rgba(255,255,255,.08); color: rgba(255,255,255,.5); }
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3vw, 2.5rem);
    color: var(--stone-950); line-height: 1.25;
}
.section-title--light { color: var(--white); }
.section-desc {
    font-size: 1.05rem; color: var(--stone-500);
    max-width: 560px; margin-top: 12px; line-height: 1.7;
}
.section-header:not(.section-header--left) .section-desc { margin-left: auto; margin-right: auto; }
.section-desc--light { color: rgba(255,255,255,.65); }
.section-desc--dark { color: rgba(255,255,255,.45); }

/* ============================================
   ABOUT
   ============================================ */
.about { background: var(--white); }
.about-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.about-card {
    background: var(--stone-50); border: 1px solid var(--stone-200);
    border-radius: var(--radius-lg); padding: 36px 28px;
    transition: transform .3s, box-shadow .3s, border-color .3s;
    display: flex; flex-direction: column;
}
.about-card:hover {
    transform: translateY(-6px); box-shadow: var(--shadow-md);
    border-color: var(--green-600);
}
.ac-icon { margin-bottom: 20px; }
.ac-icon img { width: 64px; height: 64px; object-fit: contain; }
.about-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; color: var(--stone-950); }
.about-card p { font-size: .92rem; color: var(--stone-500); line-height: 1.7; flex-grow: 1; }
.ac-metric {
    font-family: var(--font-display); font-size: 2.2rem;
    color: var(--green-600); margin-top: 20px;
}

/* ============================================
   VIDEO
   ============================================ */
.video-section { background: var(--stone-100); padding: 80px 0; }
.video-wrapper {
    max-width: 800px; margin: 0 auto;
    border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.video-ratio {
    position: relative; padding-top: 56.25%; background: var(--stone-200);
}
.video-ratio iframe {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none;
}

/* ============================================
   HOW IT WORKS — Steps
   ============================================ */
.how-it-works {
    background: var(--stone-50);
}
.steps-grid {
    display: flex; align-items: flex-start; justify-content: center;
    gap: 0; flex-wrap: wrap;
}
.step-card {
    background: var(--white); border: 1px solid var(--stone-200);
    border-radius: var(--radius-lg); padding: 32px 24px;
    text-align: center; flex: 1; min-width: 200px; max-width: 250px;
    position: relative; transition: transform .3s, box-shadow .3s;
}
.step-card:hover {
    transform: translateY(-4px); box-shadow: var(--shadow-md);
}
.step-num {
    font-family: var(--font-display); font-size: 2.5rem;
    color: var(--green-100); line-height: 1; margin-bottom: 12px;
    font-weight: 400;
}
.step-icon {
    width: 56px; height: 56px; background: var(--green-50);
    border-radius: 14px; display: flex; align-items: center;
    justify-content: center; font-size: 22px; color: var(--green-700);
    margin: 0 auto 16px;
}
.step-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.step-card p { font-size: .85rem; color: var(--stone-500); line-height: 1.6; }
.step-connector {
    display: flex; align-items: center; justify-content: center;
    color: var(--stone-300); font-size: 1.2rem;
    padding: 0 8px; margin-top: 60px;
}

/* ============================================
   OFFLINE SECTION
   ============================================ */
.offline-section {
    background: var(--section-dark); color: var(--white);
    position: relative; overflow: hidden;
}
.offline-bg {
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(22,163,74,.12) 0%, transparent 60%);
    pointer-events: none;
}
.offline-layout {
    display: grid; grid-template-columns: 1.2fr 0.8fr;
    gap: 64px; align-items: center; position: relative; z-index: 2;
}
.offline-desc {
    font-size: 1.05rem; color: rgba(255,255,255,.6);
    margin: 12px 0 32px; line-height: 1.7;
}
.offline-features { display: flex; flex-direction: column; gap: 20px; }
.of-item {
    display: flex; gap: 16px; align-items: flex-start;
}
.of-icon {
    width: 44px; height: 44px; background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 12px; display: flex; align-items: center;
    justify-content: center; font-size: 18px; color: var(--green-500);
    flex-shrink: 0;
}
.of-item strong {
    display: block; font-size: .95rem; margin-bottom: 4px;
}
.of-item p {
    font-size: .85rem; color: rgba(255,255,255,.5); line-height: 1.6; margin: 0;
}
.offline-visual { display: flex; justify-content: center; }
.offline-scene { position: relative; }
.os-phone {
    max-width: 280px; border-radius: var(--radius-xl);
    overflow: hidden; border: 1px solid rgba(255,255,255,.1);
    box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.os-phone img { width: 100%; display: block; }
.os-badge {
    position: absolute; display: flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,.12); backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,.15);
    border-radius: 10px; padding: 8px 16px;
    font-size: .78rem; font-weight: 600; color: var(--white);
}
.os-badge--top { top: 16px; right: -40px; }
.os-badge--bottom { bottom: 16px; left: -40px; }
.os-badge i { color: var(--green-500); }

/* ============================================
   FEATURES
   ============================================ */
.features { background: var(--stone-50); }
.features-layout {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 72px; align-items: center;
}
.features-list { display: flex; flex-direction: column; gap: 8px; }
.feature-item {
    display: flex; gap: 16px; padding: 18px;
    border-radius: var(--radius); border: 1px solid transparent;
    transition: .3s;
}
.feature-item:hover {
    background: var(--white); border-color: var(--stone-200);
    box-shadow: var(--shadow-xs);
}
.fi-icon {
    width: 44px; height: 44px; background: var(--green-50);
    border-radius: 12px; display: flex; align-items: center;
    justify-content: center; flex-shrink: 0;
    font-size: 18px; color: var(--green-700);
}
.feature-item h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.feature-item p { font-size: .88rem; color: var(--stone-500); }

.features-visual {
    background: var(--white); border: 1px solid var(--stone-200);
    border-radius: var(--radius-xl); box-shadow: var(--shadow-md);
    overflow: hidden; position: sticky; top: 80px;
}
.features-visual img { width: 100%; display: block; }

/* ============================================
   MODULES — Blue section
   ============================================ */
.modules {
    background: linear-gradient(135deg, var(--section-blue) 0%, var(--section-blue-light) 100%);
    color: var(--white); position: relative; overflow: hidden;
}
.modules-pattern {
    position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='80' height='80' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='40' cy='40' r='1.5' fill='rgba(255,255,255,0.08)'/%3E%3Cline x1='40' y1='0' x2='40' y2='80' stroke='rgba(255,255,255,0.03)' stroke-width='.5'/%3E%3Cline x1='0' y1='40' x2='80' y2='40' stroke='rgba(255,255,255,0.03)' stroke-width='.5'/%3E%3C/svg%3E");
    opacity: .6; pointer-events: none;
}
.modules .container { position: relative; z-index: 2; }
.modules-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.module-card {
    background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.15);
    border-radius: var(--radius-lg); padding: 32px 24px;
    backdrop-filter: blur(4px); transition: .3s;
}
.module-card:hover {
    background: rgba(255,255,255,.18); border-color: rgba(255,255,255,.25);
    transform: translateY(-4px);
}
.mc-icon {
    width: 48px; height: 48px; background: rgba(255,255,255,.15);
    border-radius: 12px; display: flex; align-items: center;
    justify-content: center; font-size: 22px; margin-bottom: 16px;
}
.module-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.module-card p { font-size: .88rem; color: rgba(255,255,255,.65); margin-bottom: 14px; }
.module-card ul li {
    font-size: .84rem; color: rgba(255,255,255,.55);
    padding: 4px 0; display: flex; align-items: center; gap: 8px;
}
.module-card ul li i { color: rgba(255,255,255,.8); font-size: .7rem; }
.mc-screenshot {
    margin-top: 16px; border-radius: var(--radius);
    overflow: hidden; border: 1px solid rgba(255,255,255,.1);
}
.mc-screenshot img { width: 100%; display: block; }

/* ============================================
   ROADMAP
   ============================================ */
.roadmap { background: var(--white); }
.roadmap-grid {
    display: grid; grid-template-columns: repeat(3,1fr);
    gap: 20px; max-width: 900px; margin: 0 auto;
}
.rm-item {
    background: var(--stone-50); border: 1px solid var(--stone-200);
    border-radius: var(--radius); padding: 24px 20px;
    text-align: center; transition: .3s;
}
.rm-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); }
.rm-status {
    width: 36px; height: 36px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 12px; font-size: 14px;
}
.rm-done { background: var(--green-100); color: var(--green-700); }
.rm-progress { background: #dbeafe; color: #1d4ed8; }
.rm-planned { background: var(--stone-100); color: var(--stone-400); }
.rm-item h4 { font-size: .95rem; font-weight: 700; margin-bottom: 4px; }
.rm-item p { font-size: .82rem; color: var(--stone-500); }

/* ============================================
   PRICING
   ============================================ */
.pricing { background: var(--stone-50); }
.pricing-grid {
    display: grid; grid-template-columns: repeat(4,1fr);
    gap: 20px; max-width: 1100px; margin: 0 auto;
}
.price-card {
    border-radius: var(--radius-xl); padding: 36px 28px;
    color: var(--white); transition: transform .3s, box-shadow .3s;
    position: relative; overflow: hidden;
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.tier-start { background: linear-gradient(145deg, #43a047, #66bb6a); }
.tier-optimal { background: linear-gradient(145deg, #1976d2, #42a5f5); }
.tier-full { background: linear-gradient(145deg, #e65100, #fb8c00); }
.tier-partner { background: linear-gradient(145deg, #6a1b9a, #ab47bc); }

.pc-price--icon { font-size: 2.4rem; }

.pc-badge {
    position: absolute; top: 16px; right: 16px;
    background: rgba(255,255,255,.2); backdrop-filter: blur(4px);
    padding: 4px 12px; border-radius: 8px;
    font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
}
.pc-name {
    font-size: .85rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 2px; opacity: .8; margin-bottom: 14px;
}
.pc-price {
    font-family: var(--font-display); font-size: 3rem; line-height: 1; margin-bottom: 2px;
}
.pc-price small {
    font-size: .9rem; font-weight: 400; font-family: var(--font-body); opacity: .7;
}
.pc-period { font-size: .85rem; opacity: .6; margin-bottom: 4px; }
.pc-permonth {
    font-size: .78rem; opacity: .5; margin-bottom: 24px;
    font-style: italic;
}
.price-card ul { margin-bottom: 28px; }
.price-card ul li {
    font-size: .9rem; padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,.15);
    display: flex; align-items: center; gap: 10px;
}
.price-card ul li:last-child { border: none; }
.price-card ul li i { font-size: .75rem; }
.price-card ul li.disabled { opacity: .4; }
.pc-btn {
    display: block; text-align: center; padding: 13px;
    border-radius: 12px; font-weight: 700; font-size: .95rem;
    color: inherit; transition: .25s;
    background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.25);
}
.pc-btn:hover { background: rgba(255,255,255,.35); }
.pricing-note {
    text-align: center; margin-top: 32px;
    font-size: .95rem; color: var(--stone-500);
}
.pricing-note a { color: var(--green-600); font-weight: 600; }
.pricing-note a:hover { text-decoration: underline; }

/* ============================================
   PRICING COMPARISON TABLE
   ============================================ */
.pricing-compare { margin-top: 56px; }
.compare-title {
    font-family: var(--font-display); font-size: 1.4rem;
    text-align: center; margin-bottom: 28px; color: var(--stone-950);
}
.compare-table-wrap {
    overflow-x: auto; border-radius: var(--radius-lg);
    border: 1px solid var(--stone-200); box-shadow: var(--shadow-sm);
}
.compare-table {
    width: 100%; min-width: 600px; border-collapse: collapse;
    background: var(--white); font-size: .9rem;
}
.compare-table th, .compare-table td {
    padding: 14px 20px; text-align: center;
    border-bottom: 1px solid var(--stone-100);
}
.compare-table th:first-child, .compare-table td:first-child {
    text-align: left; font-weight: 500; color: var(--stone-700); min-width: 220px;
}
.compare-table thead th {
    background: var(--stone-50); font-weight: 700; font-size: .8rem;
    text-transform: uppercase; letter-spacing: 1.5px; color: var(--stone-500);
    border-bottom: 2px solid var(--stone-200);
}
.tier-col--pop { background: var(--green-50) !important; color: var(--green-800) !important; }
.tier-col--partner { background: #f3e5f5 !important; color: #6a1b9a !important; }
.compare-table tbody tr:hover { background: var(--stone-50); }
.tc-yes { color: var(--green-600); font-size: 1rem; }
.tc-no { color: var(--stone-300); font-size: .9rem; }
.compare-price-row { background: var(--stone-50); font-size: .95rem; }
.compare-price-row td { border-bottom: none; padding-top: 18px; padding-bottom: 18px; }
.compare-price-row strong {
    color: var(--stone-950); font-family: var(--font-display); font-size: 1.1rem;
}
.compare-table tbody td:nth-child(3) { background: rgba(240,253,244,.5); }
.compare-table tbody td:nth-child(5) { background: rgba(243,229,245,.35); }

/* ============================================
   FAQ
   ============================================ */
.faq-section { background: var(--white); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
    border: 1px solid var(--stone-200); border-radius: var(--radius);
    margin-bottom: 12px; overflow: hidden; transition: border-color .3s;
}
.faq-item[open] { border-color: var(--green-600); }
.faq-item summary {
    padding: 18px 24px; font-weight: 600; font-size: .95rem;
    cursor: pointer; list-style: none; display: flex;
    justify-content: space-between; align-items: center;
    transition: background .2s;
}
.faq-item summary:hover { background: var(--stone-50); }
.faq-item summary::after {
    content: '+'; font-size: 1.3rem; color: var(--stone-400);
    font-weight: 300; transition: transform .2s;
}
.faq-item[open] summary::after { content: '−'; color: var(--green-600); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p {
    padding: 0 24px 18px; font-size: .9rem;
    color: var(--stone-500); line-height: 1.7;
}

/* ============================================
   CONTACT — Dark section
   ============================================ */
.contact { background: var(--section-dark); color: var(--white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.contact-form { display: flex; flex-direction: column; gap: 14px; }
.contact-form input,
.contact-form textarea {
    background: var(--section-dark-card); border: 1px solid rgba(255,255,255,.1);
    border-radius: 10px; padding: 14px 18px; color: var(--white);
    font-family: var(--font-body); font-size: .95rem;
    outline: none; transition: border-color .3s;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255,255,255,.3); }
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--green-500); }
.contact-form textarea { resize: vertical; min-height: 110px; }
.contact-form button {
    background: var(--green-600); color: var(--white); border: none;
    border-radius: 10px; padding: 15px; font-size: 1rem; font-weight: 700;
    cursor: pointer; font-family: var(--font-body); transition: .25s;
    display: flex; align-items: center; justify-content: center; gap: 8px;
}
.contact-form button:hover { background: var(--green-500); transform: translateY(-1px); }

.contact-info h3 {
    font-family: var(--font-display); font-size: 1.4rem; margin-bottom: 28px;
}
.ci-row { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.ci-icon {
    width: 42px; height: 42px; background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.1); border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; font-size: 14px; color: rgba(255,255,255,.5);
}
.ci-label {
    font-size: .75rem; color: rgba(255,255,255,.35);
    text-transform: uppercase; letter-spacing: 1px;
}
.ci-value { font-size: .95rem; }
.ci-row a { color: var(--green-500); }
.ci-row a:hover { text-decoration: underline; }
.contact-map {
    margin-top: 24px; border-radius: var(--radius);
    overflow: hidden; border: 1px solid rgba(255,255,255,.1);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--stone-950); padding: 28px 0;
    border-top: 1px solid rgba(255,255,255,.06);
}
.footer-inner { display: flex; justify-content: space-between; align-items: center; }
.footer p { font-size: .82rem; color: rgba(255,255,255,.35); }
.footer a { color: var(--green-500); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-up {
    opacity: 0; transform: translateY(28px);
    transition: opacity .7s ease, transform .7s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   PARALLAX
   ============================================ */
.hero-bg[data-parallax] { will-change: transform; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .pricing-grid { grid-template-columns: repeat(2,1fr); max-width: 520px; }
    .modules-grid { grid-template-columns: 1fr; }
    .roadmap-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
    .nav {
        display: none; position: absolute; top: 64px; left: 0; right: 0;
        background: var(--white); flex-direction: column; gap: 0;
        box-shadow: var(--shadow-md); padding: 8px 0;
    }
    .nav.open { display: flex; }
    .nav-link {
        color: var(--stone-700) !important; padding: 12px 24px;
        border-bottom: 1px solid var(--stone-100); width: 100%; text-align: center;
    }
    .nav-link:hover { background: var(--stone-50); }
    .nav-cta { margin: 8px 24px; text-align: center; }
    .burger { display: flex; }

    section { padding: 64px 0; }

    .hero-grid { grid-template-columns: 1fr; text-align: center; padding-top: 60px; }
    .hero-desc { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; flex-wrap: wrap; gap: 24px; }
    .hero-visual { display: none; }

    .trust-items { gap: 24px; }

    .about-grid { grid-template-columns: 1fr; }
    .features-layout { grid-template-columns: 1fr; gap: 40px; }
    .features-visual { display: none; }
    .modules-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 380px; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-inner { flex-direction: column; gap: 8px; text-align: center; }

    .section-header--left { text-align: center; }
    .section-header--left .section-desc { margin-left: auto; margin-right: auto; }

    .steps-grid { flex-direction: column; align-items: center; gap: 12px; }
    .step-connector { transform: rotate(90deg); margin: 0; }
    .step-card { max-width: 100%; }

    .offline-layout { grid-template-columns: 1fr; gap: 40px; }
    .offline-visual { order: -1; }

    .roadmap-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-stats { gap: 16px; }
    .hs-num { font-size: 1.5rem; }
    .btn-hero, .btn-hero-outline { padding: 13px 24px; font-size: .9rem; }
    .price-card { padding: 28px 20px; }
    .pc-price { font-size: 2.4rem; }
    .trust-items { flex-direction: column; gap: 16px; align-items: center; }
}