/* ============================================
   СФЕРА + СОКОЛ — Презентация для инвестора
   Стиль: тёмный премиальный, деловой
   ============================================ */

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

:root {
  --bg: #080c15;
  --bg-alt: #0b1220;
  --bg-card: #0f1a2b;
  --bg-card-hover: #142236;
  --text: #e4e9f0;
  --text-dim: #8494a7;
  --text-muted: #4a5a6e;
  --blue: #5ba3f5;
  --blue-bright: #82bcff;
  --blue-dim: #264a7a;
  --green: #3dbd5d;
  --red: #e5453a;
  --orange: #f0960a;
  --gold: #efc94c;
  --border: rgba(91, 163, 245, 0.1);
  --border-hover: rgba(91, 163, 245, 0.25);
  --glow: rgba(91, 163, 245, 0.06);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 18px;
  overflow-x: hidden;
}

/* --- Progress --- */
.progress-bar {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: linear-gradient(90deg, var(--blue), var(--blue-bright));
  z-index: 1000; transition: width 0.1s linear;
}

/* --- Nav --- */
.nav {
  position: fixed; top: 2px; left: 0; right: 0; z-index: 100;
  padding: 16px 0; transition: all 0.4s;
}
.nav.scrolled {
  background: rgba(8, 12, 21, 0.94);
  backdrop-filter: blur(16px); padding: 10px 0;
  box-shadow: 0 2px 30px rgba(0,0,0,0.4);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 40px;
  display: flex; justify-content: space-between; align-items: center;
}
.nav-logo { font-size: 15px; letter-spacing: 5px; font-weight: 300; }
.nav-logo span { color: var(--blue); }
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a {
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-muted); text-decoration: none; transition: color 0.3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--blue); }

/* --- Layout --- */
.container { max-width: 1100px; margin: 0 auto; padding: 0 40px; }
section { padding: 120px 0; position: relative; }
section:nth-child(even) { background: var(--bg-alt); }

/* --- Typography --- */
.section-label {
  font-size: 11px; letter-spacing: 4px; text-transform: uppercase;
  color: var(--blue); margin-bottom: 14px; font-weight: 500;
}
.section-title {
  font-size: 44px; font-weight: 300; line-height: 1.3; margin-bottom: 18px;
}
.section-title strong { font-weight: 600; }
.section-text {
  font-size: 21px; color: var(--text-dim); max-width: 780px;
  font-weight: 300; line-height: 1.8;
}
.divider {
  width: 50px; height: 2px;
  background: linear-gradient(90deg, var(--blue), transparent);
  margin: 22px 0;
}
.section-sep { display: flex; justify-content: center; }
.section-sep-line {
  width: 1px; height: 60px;
  background: linear-gradient(180deg, transparent, var(--blue-dim), transparent);
}

/* --- Hero --- */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  justify-content: center; text-align: center;
  position: relative; overflow: hidden; padding: 0;
}
.hero-bg {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(8,12,21,0.3) 0%, rgba(8,12,21,0.55) 40%, rgba(8,12,21,0.85) 75%, rgba(8,12,21,0.98) 100%);
}
.hero-scroll {
  position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%);
  z-index: 2; text-align: center;
  opacity: 0; animation: fadeUp 1s ease 1.4s forwards;
}
.hero-scroll-text {
  font-size: 10px; letter-spacing: 3px; color: rgba(255,255,255,0.25);
  text-transform: uppercase; margin-bottom: 8px;
}
.hero-scroll-line {
  display: block; width: 1px; height: 40px; margin: 0 auto;
  background: linear-gradient(180deg, rgba(91,163,245,0.5), transparent);
  animation: scrollPulse 2s ease infinite;
}
@keyframes scrollPulse {
  0%,100% { opacity: 0.2; transform: scaleY(0.7); }
  50% { opacity: 0.8; transform: scaleY(1); }
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block; padding: 6px 18px; border: 1px solid var(--border);
  font-size: 11px; letter-spacing: 3px; color: var(--text-muted);
  text-transform: uppercase; margin-bottom: 30px;
  opacity: 0; animation: fadeUp 1s ease 0.2s forwards;
}
.hero-title span { color: var(--blue); }
.hero-title {
  font-size: 56px; font-weight: 300; letter-spacing: 12px; color: #fff;
  text-shadow: 0 2px 30px rgba(0,0,0,0.8), 0 0 60px rgba(0,0,0,0.5);
  margin-bottom: 10px; text-shadow: 0 0 50px rgba(91,163,245,0.12);
  opacity: 0; animation: fadeUp 1s ease 0.4s forwards;
}
.hero-plus {
  font-size: 28px; font-weight: 200; color: var(--blue-dim);
  letter-spacing: 6px; margin: 8px 0;
  opacity: 0; animation: fadeUp 1s ease 0.5s forwards;
}
.hero-subtitle-name {
  font-size: 52px; font-weight: 300; letter-spacing: 14px; color: var(--blue);
  margin-bottom: 16px;
  opacity: 0; animation: fadeUp 1s ease 0.6s forwards;
}
.hero-line {
  width: 100px; height: 1px; margin: 28px auto;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  opacity: 0; animation: fadeUp 1s ease 0.7s forwards;
}
.hero-tagline {
  font-size: 21px; color: rgba(228,233,240,0.85); font-weight: 300;
  max-width: 680px; margin: 0 auto 44px; line-height: 1.7;
  text-shadow: 0 2px 20px rgba(0,0,0,0.7);
  opacity: 0; animation: fadeUp 1s ease 0.9s forwards;
}
.hero-tagline strong { color: #fff; font-weight: 500; }
.hero-cta {
  display: inline-block; padding: 16px 44px;
  border: 1px solid var(--blue-dim); color: var(--blue);
  font-size: 13px; letter-spacing: 3px; text-transform: uppercase;
  text-decoration: none; transition: all 0.4s;
  opacity: 0; animation: fadeUp 1s ease 1.1s forwards;
}
.hero-cta:hover {
  background: rgba(91,163,245,0.1); border-color: var(--blue);
  color: #fff; box-shadow: 0 0 30px rgba(91,163,245,0.12);
}

/* --- Big Numbers --- */
.big-numbers {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 50px;
}
.big-number { text-align: center; padding: 30px 16px; }
.big-number .number {
  font-size: 52px; font-weight: 200; font-family: var(--mono);
  color: var(--blue); line-height: 1; margin-bottom: 10px;
}
.big-number .number.red { color: var(--red); }
.big-number .number.green { color: var(--green); }
.big-number .number.gold { color: var(--gold); }
.big-number .label {
  font-size: 14px; color: var(--text-dim); line-height: 1.5;
}

/* --- Cards grid --- */
.cards-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 50px;
}
.card {
  padding: 30px 24px; border: 1px solid var(--border);
  background: var(--bg-card); transition: all 0.4s; position: relative; overflow: hidden;
}
.card::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 3px; height: 0; background: var(--blue); transition: height 0.4s;
}
.card:hover { border-color: var(--border-hover); transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3); }
.card:hover::before { height: 100%; }
.card-num {
  font-size: 11px; font-family: var(--mono); color: var(--blue-dim);
  letter-spacing: 2px; margin-bottom: 10px;
}
.card h4 { font-size: 17px; font-weight: 500; margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--text-dim); line-height: 1.7; }

/* --- 2-col layout --- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 50px; align-items: start; }
.two-col-wide { display: grid; grid-template-columns: 1.4fr 1fr; gap: 50px; margin-top: 50px; align-items: start; }

/* --- Spec table --- */
.spec-table { width: 100%; border-collapse: collapse; margin-top: 20px; font-size: 14px; }
.spec-table th, .spec-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); }
.spec-table th {
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-muted); font-weight: 500; background: rgba(91,163,245,0.03);
}
.spec-table td:first-child { color: var(--text); font-weight: 400; }
.spec-table td { color: var(--text-dim); }
.spec-table tr:hover td { background: rgba(91,163,245,0.02); }

/* --- Compare row --- */
.compare { margin-top: 50px; border: 1px solid var(--border); }
.compare-row { display: grid; grid-template-columns: 1.2fr 1fr 1fr; border-bottom: 1px solid var(--border); }
.compare-row:last-child { border: none; }
.compare-row.header { background: rgba(91,163,245,0.04); }
.compare-cell { padding: 16px 22px; font-size: 15px; }
.compare-cell.param { color: var(--text-dim); }
.compare-cell.them { color: var(--text-muted); text-align: center; border-left: 1px solid var(--border); }
.compare-cell.us { color: var(--blue); font-weight: 500; text-align: center; border-left: 1px solid var(--border); background: rgba(91,163,245,0.02); }
.compare-cell.header-cell { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--text-muted); font-weight: 500; padding: 12px 22px; }
.check { color: var(--green); margin-left: 4px; }
.cross { color: var(--red); margin-left: 4px; }

/* --- Highlight box --- */
.highlight-box {
  padding: 30px; border: 1px solid var(--border);
  background: rgba(91,163,245,0.03); margin-top: 30px;
}
.highlight-box h4 { font-size: 16px; font-weight: 500; margin-bottom: 8px; color: var(--blue); }
.highlight-box p { font-size: 15px; color: var(--text-dim); line-height: 1.7; }
.highlight-box .number {
  font-size: 36px; font-family: var(--mono); font-weight: 200;
  color: var(--blue); line-height: 1; margin-bottom: 6px;
}

/* --- Chain / Timeline --- */
.chain { display: flex; align-items: flex-start; margin-top: 50px; position: relative; }
.chain::before {
  content: ''; position: absolute; top: 12px; left: 5%; right: 5%;
  height: 2px; background: linear-gradient(90deg, var(--blue-dim), var(--blue), var(--green));
}
.chain-step { flex: 1; text-align: center; position: relative; z-index: 1; padding: 0 8px; }
.chain-dot {
  width: 20px; height: 20px; border: 2px solid var(--blue);
  border-radius: 50%; margin: 2px auto 18px; background: var(--bg); transition: all 0.3s;
}
.chain-step.active .chain-dot { background: var(--blue); box-shadow: 0 0 16px var(--blue); }
.chain-num { font-size: 10px; color: var(--blue-dim); letter-spacing: 2px; font-family: var(--mono); margin-bottom: 4px; }
.chain-step h4 { font-size: 14px; font-weight: 500; margin-bottom: 6px; }
.chain-step p { font-size: 12px; color: var(--text-dim); line-height: 1.5; }
.chain-time { font-size: 20px; font-family: var(--mono); color: var(--green); font-weight: 300; margin-top: 8px; }

/* --- Quote --- */
.quote-section { padding: 80px 0; }
.quote { text-align: center; max-width: 800px; margin: 0 auto; }
.quote-mark { font-size: 100px; font-weight: 200; color: rgba(91,163,245,0.08); line-height: 0.5; font-family: Georgia, serif; }
.quote p { font-size: 24px; font-weight: 300; line-height: 1.6; font-style: italic; }
.quote-line { width: 40px; height: 1px; background: var(--blue); margin: 20px auto; }
.quote cite { font-size: 13px; color: var(--text-muted); letter-spacing: 1px; font-style: normal; }

/* --- CTA --- */
.cta { text-align: center; padding: 120px 0; }
.cta-title { font-size: 36px; font-weight: 300; margin-bottom: 14px; }
.cta-text { font-size: 18px; color: var(--text-dim); margin-bottom: 36px; }
.cta-button {
  display: inline-block; padding: 18px 56px; background: var(--blue);
  color: var(--bg); font-size: 14px; letter-spacing: 3px;
  text-transform: uppercase; font-weight: 600; border: none;
  cursor: pointer; transition: all 0.4s; font-family: var(--font);
}
.cta-button:hover { background: var(--blue-bright); box-shadow: 0 0 40px rgba(91,163,245,0.3); }
.cta-contacts { margin-top: 30px; font-size: 14px; color: var(--text-muted); }

/* --- Footer --- */
.footer { padding: 30px 0; border-top: 1px solid var(--border); text-align: center; font-size: 12px; color: var(--text-muted); letter-spacing: 1px; }

/* --- Burger menu --- */
.nav-burger {
  display: none; background: none; border: none; cursor: pointer;
  padding: 6px; flex-direction: column; gap: 5px;
}
.nav-burger span {
  display: block; width: 20px; height: 1.5px; background: var(--text-dim); transition: all 0.3s;
}
.nav-burger.open span:nth-child(1) { transform: rotate(45deg) translate(4px,5px); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: rotate(-45deg) translate(4px,-5px); }
.mobile-menu {
  position: fixed; inset: 0; background: rgba(8,12,21,0.97);
  backdrop-filter: blur(20px); z-index: 99;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px;
  opacity: 0; visibility: hidden; transition: opacity 0.4s, visibility 0.4s;
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu a {
  font-size: 18px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--text-dim); text-decoration: none; transition: color 0.3s;
}
.mobile-menu a:hover { color: var(--blue); }
@media (max-width: 1024px) {
  .nav-burger { display: flex; }
}

/* --- Floating CTA --- */
.floating-cta {
  position: fixed; bottom: 28px; right: 28px; z-index: 90;
  opacity: 0; transform: translateY(20px); transition: opacity 0.4s, transform 0.4s; pointer-events: none;
}
.floating-cta.visible { opacity: 1; transform: translateY(0); pointer-events: all; }
.floating-cta button {
  padding: 12px 24px; background: var(--blue); color: var(--bg); border: none;
  font-size: 12px; letter-spacing: 2px; text-transform: uppercase; font-weight: 600;
  cursor: pointer; font-family: var(--font); transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(91,163,245,0.3);
}
.floating-cta button:hover { background: var(--blue-bright); box-shadow: 0 6px 30px rgba(91,163,245,0.4); transform: translateY(-2px); }

/* --- Back to top --- */
.back-to-top {
  position: fixed; bottom: 28px; left: 28px; z-index: 90;
  width: 40px; height: 40px; border: 1px solid var(--border);
  background: rgba(8,12,21,0.8); backdrop-filter: blur(8px);
  color: var(--text-muted); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(20px); transition: all 0.4s; pointer-events: none;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: all; }
.back-to-top:hover { border-color: var(--blue); color: var(--blue); }

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

/* --- Modal --- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(5,8,15,0.85);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  z-index: 2000; display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: opacity 0.4s, visibility 0.4s; padding: 20px;
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal {
  background: var(--bg-alt); border: 1px solid var(--border);
  max-width: 500px; width: 100%; padding: 44px 40px; position: relative;
  transform: translateY(30px) scale(0.96);
  transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}
.modal-overlay.open .modal { transform: translateY(0) scale(1); }
.modal-close {
  position: absolute; top: 14px; right: 18px; background: none; border: none;
  color: var(--text-muted); font-size: 28px; cursor: pointer; transition: color 0.3s; line-height: 1;
}
.modal-close:hover { color: var(--text); }
.modal-title { font-size: 24px; font-weight: 400; text-align: center; margin-bottom: 8px; }
.modal-subtitle { font-size: 14px; color: var(--text-dim); text-align: center; line-height: 1.6; margin-bottom: 28px; }
.form-group { margin-bottom: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-label { display: block; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--text-dim); margin-bottom: 6px; font-weight: 500; }
.form-input {
  width: 100%; padding: 12px 14px; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); font-size: 14px; font-family: var(--font); outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(91,163,245,0.1); }
.form-textarea { resize: vertical; min-height: 70px; }
.form-submit {
  width: 100%; padding: 14px; background: var(--blue); color: var(--bg);
  font-size: 13px; letter-spacing: 2px; text-transform: uppercase; font-weight: 600;
  border: none; cursor: pointer; transition: all 0.3s; font-family: var(--font); margin-top: 6px;
}
.form-submit:hover { background: var(--blue-bright); box-shadow: 0 0 25px rgba(91,163,245,0.25); }
.form-note { font-size: 11px; color: var(--text-muted); text-align: center; margin-top: 14px; }
.success-details { margin-top: 24px; border: 1px solid var(--border); background: var(--bg); }
.success-detail { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.success-detail:last-child { border: none; }
.success-detail-label { font-size: 12px; color: var(--text-muted); letter-spacing: 1px; }
.success-detail-value { font-size: 14px; color: var(--text); font-weight: 500; }
.success-circle { stroke-dasharray: 189; stroke-dashoffset: 189; animation: drawCircle 0.8s ease 0.2s forwards; }
.success-check { stroke-dasharray: 50; stroke-dashoffset: 50; animation: drawCheck 0.5s ease 0.8s forwards; }
@keyframes drawCircle { to { stroke-dashoffset: 0; } }
@keyframes drawCheck { to { stroke-dashoffset: 0; } }

@media (max-width: 768px) {
  .modal { padding: 30px 20px; }
  .modal-title { font-size: 20px; }
  .form-row { grid-template-columns: 1fr; }
}

/* --- Tech Details (collapsible) --- */
.tech-toggle {
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; padding: 24px 30px;
  border: 1px solid var(--border); background: var(--bg-card);
  transition: all 0.3s;
}
.tech-toggle:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.tech-toggle-icon {
  font-size: 32px; font-weight: 200; color: var(--blue);
  width: 44px; height: 44px; border: 1px solid var(--border);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  transition: all 0.4s; flex-shrink: 0;
}
.tech-toggle.open .tech-toggle-icon { transform: rotate(45deg); border-color: var(--blue); }

.tech-content {
  max-height: 0; overflow: hidden;
  transition: max-height 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border); border-top: none;
  background: var(--bg-card);
}
.tech-content.open { max-height: 8000px; }
.tech-content > div { padding: 0 30px; }
.tech-content > div:first-child { padding-top: 30px; }
.tech-content > div:last-child { padding-bottom: 30px; }

.tech-block { /* individual sections inside */ }
.tech-section-title {
  font-size: 20px; font-weight: 500; color: var(--blue);
  padding-bottom: 12px; border-bottom: 1px solid var(--border); margin-bottom: 16px;
}
.tech-subtitle {
  font-size: 13px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-muted); font-weight: 500; margin-bottom: 10px; margin-top: 0;
}
.tech-content .spec-table { font-size: 13px; }
.tech-content .spec-table td { padding: 8px 12px; }
.tech-content .two-col { margin-top: 0; }

/* --- Animations --- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(25px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { opacity: 0; transform: translateY(25px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.stagger-item { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.stagger-item.visible { opacity: 1; transform: translateY(0); }

/* --- Responsive --- */

/* Tablet */
@media (max-width: 1024px) {
  .hero-title { font-size: 40px; letter-spacing: 8px; }
  .hero-tagline { font-size: 18px; }
  .hero-badge { font-size: 10px; }
  .section-title { font-size: 32px; }
  .section-text { font-size: 17px; }
  .big-numbers { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .big-number .number { font-size: 42px; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .two-col, .two-col-wide { grid-template-columns: 1fr; gap: 30px; }
  .chain { flex-wrap: wrap; gap: 0; }
  .chain::before { display: none; }
  .chain-step { flex: 0 0 33.33%; margin-bottom: 28px; }
  .nav-links { display: none; }
  .compare-row { grid-template-columns: 1.4fr 0.8fr 0.8fr; }
  .compare-cell { padding: 12px 14px; font-size: 14px; }
  #sokol-3d-container { height: 320px !important; }
  .tech-content .two-col { grid-template-columns: 1fr; }
}

/* Mobile */
@media (max-width: 768px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  section { padding: 70px 0; }

  /* Hero */
  .hero { min-height: 100svh; }
  .hero-title { font-size: 28px; letter-spacing: 5px; line-height: 1.4; }
  .hero-badge { font-size: 9px; letter-spacing: 2px; padding: 5px 14px; margin-bottom: 20px; }
  .hero-tagline { font-size: 15px; line-height: 1.6; margin-bottom: 30px; }
  .hero-cta { padding: 14px 32px; font-size: 12px; letter-spacing: 2px; }
  .hero-line { width: 60px; margin: 20px auto; }
  .hero-scroll { bottom: 20px; }

  /* Sections */
  .section-label { font-size: 10px; letter-spacing: 3px; margin-bottom: 10px; }
  .section-title { font-size: 24px; line-height: 1.4; }
  .section-text { font-size: 16px; line-height: 1.7; }
  .divider { width: 40px; margin: 16px 0; }

  /* Big numbers */
  .big-numbers { grid-template-columns: 1fr 1fr; gap: 12px; }
  .big-number { padding: 20px 10px; }
  .big-number .number { font-size: 32px; }
  .big-number .label { font-size: 12px; }

  /* Cards */
  .cards-grid { grid-template-columns: 1fr; gap: 12px; }
  .card { padding: 22px 18px; }
  .card h4 { font-size: 16px; }
  .card p { font-size: 13px; }

  /* Highlight box */
  .highlight-box { padding: 20px; }
  .highlight-box h4 { font-size: 15px; }
  .highlight-box p { font-size: 14px; }
  .highlight-box .number { font-size: 28px; }

  /* Kill chain */
  .chain-step { flex: 0 0 50%; margin-bottom: 24px; padding: 0 6px; }
  .chain-step h4 { font-size: 13px; }
  .chain-step p { font-size: 11px; }
  .chain-time { font-size: 18px; }
  .chain-num { font-size: 9px; }
  .chain-dot { width: 16px; height: 16px; margin-bottom: 12px; }

  /* Compare table */
  .compare-row { grid-template-columns: 1fr; }
  .compare-cell { border-left: none !important; }
  .compare-cell.param { font-weight: 500; color: var(--text); padding-bottom: 4px; }
  .compare-cell.them { text-align: left; padding-top: 2px; padding-bottom: 2px; }
  .compare-cell.us { text-align: left; padding-top: 2px; }
  .compare-row.header { display: none; }
  .compare-row { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .compare-row:last-child { border: none; }

  /* Spec table */
  .spec-table { font-size: 13px; }
  .spec-table td { padding: 8px 10px; }

  /* 3D model */
  #sokol-3d-container { height: 260px !important; }

  /* Two col */
  .two-col, .two-col-wide { grid-template-columns: 1fr; gap: 20px; }

  /* CTA */
  .cta { padding: 80px 0; }
  .cta-title { font-size: 26px; }
  .cta-text { font-size: 16px; }
  .cta-button { padding: 16px 40px; font-size: 13px; letter-spacing: 2px; }

  /* Quote */
  .quote-mark { font-size: 60px; }
  .quote p { font-size: 18px; }
  .quote cite { font-size: 12px; }

  /* Tech details */
  .tech-toggle { padding: 16px 18px; }
  .tech-toggle .section-title { font-size: 18px !important; }
  .tech-toggle-icon { width: 36px; height: 36px; font-size: 24px; }
  .tech-content > div { padding: 0 16px; }
  .tech-content .spec-table { font-size: 11px; }
  .tech-content .spec-table td { padding: 6px 8px; }
  .tech-subtitle { font-size: 11px; }

  /* Section sep */
  .section-sep-line { height: 40px; }

  /* Floating */
  .floating-cta { bottom: 16px; right: 16px; }
  .floating-cta button { padding: 10px 18px; font-size: 11px; }
  .back-to-top { bottom: 16px; left: 16px; width: 36px; height: 36px; }

  /* Nav */
  .nav { padding: 12px 0; }
  .nav.scrolled { padding: 8px 0; }
  .nav-inner { padding: 0 16px; }
  .nav-logo { font-size: 13px; letter-spacing: 4px; }

  /* Footer */
  .footer { font-size: 11px; padding: 20px 0; }
}

/* Small mobile */
@media (max-width: 400px) {
  .hero-title { font-size: 22px; letter-spacing: 3px; }
  .hero-tagline { font-size: 14px; }
  .section-title { font-size: 20px; }
  .big-number .number { font-size: 26px; }
  .chain-step { flex: 0 0 100%; }
  #sokol-3d-container { height: 200px !important; }
}