/* ============================================================
   COALAB — Design System
   ============================================================ */

/* ── Variables ── */
:root {
  --bg:          #0a0b0f;
  --bg-2:        #0f1117;
  --bg-3:        #13151e;
  --surface:     #1a1d28;
  --surface-2:   #21253a;
  --border:      rgba(255,255,255,.07);
  --border-2:    rgba(255,255,255,.12);

  --text:        #e8eaf0;
  --text-2:      #9aa0b8;
  --text-3:      #5c6380;

  --accent:      #4f6ef7;
  --accent-2:    #7c5cfc;
  --accent-glow: rgba(79,110,247,.25);

  --font-sans:   'Noto Sans KR', 'Inter', system-ui, sans-serif;
  --radius:      12px;
  --radius-lg:   20px;
  --transition:  .25s cubic-bezier(.4,0,.2,1);

  --container:   1180px;
  --section-gap: 120px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Utility ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.br-pc { display: block; }
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: -.01em;
  transition: var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}
.btn--ghost {
  background: rgba(255,255,255,.05);
  color: var(--text);
  border: 1px solid var(--border-2);
}
.btn--ghost:hover {
  background: rgba(255,255,255,.09);
  border-color: rgba(255,255,255,.2);
}
.btn--outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(79,110,247,.4);
  font-size: .875rem;
  padding: 11px 22px;
}
.btn--outline:hover {
  background: rgba(79,110,247,.08);
  border-color: var(--accent);
}
.btn--full { width: 100%; justify-content: center; }

/* ── Sections ── */
.section { padding: var(--section-gap) 0; }
.section--dark { background: var(--bg-2); }
.section__header {
  text-align: center;
  margin-bottom: 72px;
}
.section__label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  padding: 6px 14px;
  border-radius: 20px;
  background: rgba(79,110,247,.1);
  border: 1px solid rgba(79,110,247,.2);
}
.section__title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.2;
  margin-bottom: 20px;
}
.section__desc {
  color: var(--text-2);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ── Animations ── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: var(--transition);
}
.nav.scrolled {
  background: rgba(10,11,15,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -.04em;
  color: var(--text);
}
.nav__logo span { color: var(--accent); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav__links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--text); }
.nav__links .nav__cta {
  color: var(--accent);
  border: 1px solid rgba(79,110,247,.4);
  padding: 8px 18px;
  border-radius: 6px;
  font-weight: 600;
}
.nav__links .nav__cta:hover {
  background: rgba(79,110,247,.1);
}
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.nav__hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.active span:nth-child(2) { opacity: 0; }
.nav__hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 140px 0 80px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,110,247,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,110,247,.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}
.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero__glow--1 {
  width: 600px; height: 600px;
  top: -100px; left: -100px;
  background: radial-gradient(circle, rgba(79,110,247,.12) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite alternate;
}
.hero__glow--2 {
  width: 500px; height: 500px;
  bottom: -50px; right: -50px;
  background: radial-gradient(circle, rgba(124,92,252,.1) 0%, transparent 70%);
  animation: pulse 10s ease-in-out infinite alternate-reverse;
}
@keyframes pulse {
  from { transform: scale(1); opacity: .8; }
  to   { transform: scale(1.15); opacity: 1; }
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(79,110,247,.1);
  border: 1px solid rgba(79,110,247,.25);
  padding: 7px 16px;
  border-radius: 20px;
  margin-bottom: 32px;
}
.hero__badge::before {
  content: '';
  display: block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%,100% { opacity: 1; }
  50%      { opacity: .3; }
}
.hero__title {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.1;
  margin-bottom: 28px;
}
.hero__sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-2);
  line-height: 1.85;
  margin-bottom: 44px;
}
.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.hero__stats {
  display: flex;
  align-items: center;
  gap: 0;
}
.stat {
  display: flex;
  flex-direction: column;
  padding: 0 32px;
}
.stat:first-child { padding-left: 0; }
.stat strong {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.02em;
}
.stat span {
  font-size: .8rem;
  color: var(--text-3);
  margin-top: 3px;
}
.stat__divider {
  width: 1px;
  height: 36px;
  background: var(--border-2);
}
.hero__scroll {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero__scroll span {
  display: block;
  width: 20px; height: 32px;
  border: 2px solid var(--border-2);
  border-radius: 10px;
  position: relative;
}
.hero__scroll span::before {
  content: '';
  position: absolute;
  top: 5px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0%   { transform: translateX(-50%) translateY(0); opacity: 1; }
  80%  { transform: translateX(-50%) translateY(10px); opacity: 0; }
  100% { transform: translateX(-50%) translateY(0); opacity: 0; }
}

/* ============================================================
   ABOUT
   ============================================================ */
.about__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.about__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.about__card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79,110,247,.05), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.about__card:hover { border-color: var(--border-2); transform: translateY(-4px); }
.about__card:hover::before { opacity: 1; }
.about__icon {
  width: 52px; height: 52px;
  color: var(--accent);
  margin-bottom: 24px;
}
.about__icon svg { width: 100%; height: 100%; }
.about__card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -.02em;
}
.about__card h3 em {
  display: block;
  font-size: .78rem;
  font-style: normal;
  color: var(--accent);
  letter-spacing: .05em;
  text-transform: uppercase;
  margin-top: 4px;
  font-weight: 600;
}
.about__card p {
  color: var(--text-2);
  font-size: .925rem;
  line-height: 1.75;
}

/* ============================================================
   BUSINESS
   ============================================================ */
.biz__list { display: flex; flex-direction: column; gap: 80px; }
.biz__item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 48px;
  align-items: center;
}
.biz__item--reverse { direction: rtl; }
.biz__item--reverse > * { direction: ltr; }
.biz__number {
  font-size: 5rem;
  font-weight: 900;
  letter-spacing: -.05em;
  color: rgba(79,110,247,.1);
  line-height: 1;
  min-width: 80px;
}
.biz__content { max-width: 520px; }
.biz__tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.biz__content h3 {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 16px;
  line-height: 1.2;
}
.biz__desc {
  color: var(--text-2);
  font-size: .95rem;
  line-height: 1.8;
  margin-bottom: 20px;
}
.biz__features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
}
.biz__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
  color: var(--text-2);
}
.biz__features li::before {
  content: '';
  display: block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* Business visuals */
.biz__visual {
  width: 240px;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.biz__visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(79,110,247,.08), transparent 70%);
}

/* Diagram (biz 01) */
.biz__diagram {
  position: relative;
  width: 180px;
  height: 180px;
}
.diagram__node {
  position: absolute;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
.diagram__node--center {
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-color: transparent;
  font-size: .85rem;
  font-weight: 800;
  padding: 10px 16px;
  box-shadow: 0 0 20px var(--accent-glow);
}
.diagram__node--top    { top: 4px;   left: 50%; transform: translateX(-50%); }
.diagram__node--right  { top: 50%;   right: 4px; transform: translateY(-50%); }
.diagram__node--bottom { bottom: 4px; left: 50%; transform: translateX(-50%); }
.diagram__node--left   { top: 50%;   left: 4px; transform: translateY(-50%); }
.diagram__lines {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.diagram__lines svg { width: 100%; height: 100%; }

/* Shield (biz 02) */
.biz__shield svg { width: 100px; height: 100px; }

/* Chart (biz 03) */
.biz__chart {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  height: 120px;
  padding: 0 16px;
}
.chart__bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 40px;
}
.chart__bar::before {
  content: '';
  display: block;
  width: 100%;
  height: var(--h);
  background: var(--surface-2);
  border-radius: 4px 4px 0 0;
  border: 1px solid var(--border-2);
  transition: height .8s ease;
}
.chart__bar--highlight::before {
  background: linear-gradient(to top, var(--accent), var(--accent-2));
  border-color: transparent;
  box-shadow: 0 0 12px var(--accent-glow);
}
.chart__bar span {
  font-size: .65rem;
  color: var(--text-3);
  white-space: nowrap;
}

/* ============================================================
   TECHNOLOGY
   ============================================================ */
.tech__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.tech__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.tech__card:hover {
  border-color: var(--border-2);
  transform: translateY(-4px);
}
.tech__card--featured {
  border-color: rgba(79,110,247,.3);
  background: linear-gradient(135deg, var(--surface), rgba(79,110,247,.05));
}
.tech__card--featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.tech__badge {
  position: absolute;
  top: 20px; right: 20px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(79,110,247,.12);
  border: 1px solid rgba(79,110,247,.25);
  padding: 4px 10px;
  border-radius: 20px;
}
.tech__icon {
  width: 48px; height: 48px;
  color: var(--text-2);
  margin-bottom: 24px;
}
.tech__icon svg { width: 100%; height: 100%; }
.tech__card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: 12px;
}
.tech__card h3 em {
  display: block;
  font-size: .78rem;
  font-style: normal;
  color: var(--text-3);
  font-weight: 500;
  margin-top: 4px;
}
.tech__card p {
  color: var(--text-2);
  font-size: .9rem;
  line-height: 1.75;
  margin-bottom: 24px;
}
.tech__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tech__tags span {
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-3);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 20px;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact__wrapper {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 56px;
  align-items: start;
}

/* Form */
.contact__form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
}
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form__group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.form__group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-2);
}
.required { color: var(--accent); }
.form__group input,
.form__group select,
.form__group textarea {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: .925rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}
.form__group input::placeholder,
.form__group textarea::placeholder {
  color: var(--text-3);
}
.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79,110,247,.15);
}
.form__group textarea { resize: vertical; min-height: 120px; }

.select__wrapper { position: relative; }
.select__arrow {
  position: absolute;
  right: 14px; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  pointer-events: none;
  color: var(--text-3);
}
.select__wrapper select { padding-right: 40px; }
.select__wrapper select option { background: var(--bg-3); }

/* Checkbox */
.form__privacy { margin-bottom: 24px; }
.checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: .875rem;
  color: var(--text-2);
  user-select: none;
}
.checkbox input { display: none; }
.checkbox__mark {
  width: 18px; height: 18px;
  border: 1.5px solid var(--border-2);
  border-radius: 4px;
  background: var(--bg-3);
  flex-shrink: 0;
  position: relative;
  transition: var(--transition);
}
.checkbox input:checked + .checkbox__mark {
  background: var(--accent);
  border-color: var(--accent);
}
.checkbox input:checked + .checkbox__mark::after {
  content: '';
  position: absolute;
  top: 2px; left: 5px;
  width: 5px; height: 9px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

/* Contact info */
.contact__info {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 12px;
}
.contact__info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact__info-item svg {
  width: 20px; height: 20px;
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 3px;
}
.contact__info-item strong {
  display: block;
  font-size: .8rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 4px;
}
.contact__info-item span {
  font-size: .925rem;
  color: var(--text-2);
}
.contact__promise {
  margin-top: 16px;
  padding: 20px;
  background: rgba(79,110,247,.07);
  border: 1px solid rgba(79,110,247,.2);
  border-radius: var(--radius);
}
.contact__promise p {
  font-size: .875rem;
  color: var(--text-2);
  line-height: 1.6;
}
.contact__promise strong { color: var(--text); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 64px;
  padding-bottom: 64px;
}
.footer__brand .nav__logo { margin-bottom: 16px; font-size: 1.3rem; }
.footer__brand p {
  font-size: .875rem;
  color: var(--text-3);
  line-height: 1.7;
}
.footer__links {
  display: flex;
  gap: 64px;
}
.footer__col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer__col strong {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 4px;
}
.footer__col a {
  font-size: .875rem;
  color: var(--text-2);
  transition: color var(--transition);
}
.footer__col a:hover { color: var(--text); }
.footer__bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}
.footer__bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer__bottom span {
  font-size: .8rem;
  color: var(--text-3);
}

/* ============================================================
   SERVICE CARDS (shared)
   ============================================================ */
.service__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.service__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
}
.service__card:hover {
  border-color: var(--border-2);
  transform: translateY(-4px);
}
.service__icon {
  width: 44px; height: 44px;
  color: var(--text-2);
  margin-bottom: 20px;
}
.service__icon svg { width: 100%; height: 100%; }
.service__card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: 12px;
}
.service__card p {
  color: var(--text-2);
  font-size: .9rem;
  line-height: 1.75;
}

/* ── Process ── */
.process { margin-top: 24px; }
.process__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 36px;
  text-align: center;
  color: var(--text-2);
  letter-spacing: -.02em;
}
.process__steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  flex-wrap: wrap;
}
.process__step {
  flex: 1;
  min-width: 140px;
  text-align: center;
}
.process__num {
  display: inline-block;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(79,110,247,.12);
  border: 1px solid rgba(79,110,247,.25);
  color: var(--accent);
  font-size: .8rem;
  font-weight: 700;
  line-height: 36px;
  text-align: center;
  margin: 0 auto 12px;
}
.process__step strong {
  display: block;
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.process__step p {
  font-size: .82rem;
  color: var(--text-3);
  line-height: 1.5;
}
.process__arrow {
  color: var(--text-3);
  font-size: 1.2rem;
  padding: 10px 8px 0;
  flex-shrink: 0;
}

/* ── Other services ── */
.other__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 860px;
  margin: 0 auto;
}
.other__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition);
  position: relative;
}
.other__card:hover {
  border-color: rgba(79,110,247,.3);
  transform: translateY(-4px);
}
.other__num {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -.05em;
  color: rgba(79,110,247,.1);
  line-height: 1;
}
.other__icon {
  width: 44px; height: 44px;
}
.other__icon svg { width: 100%; height: 100%; }
.other__card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -.02em;
}
.other__card p {
  color: var(--text-2);
  font-size: .9rem;
  line-height: 1.7;
  flex: 1;
}
.other__link {
  color: var(--accent);
  font-size: .875rem;
  font-weight: 600;
  transition: gap var(--transition);
}

/* ── Security page accents ── */
:root {
  --accent-sec: #22d3a3;
  --accent-sec-glow: rgba(34,211,163,.2);
  --accent-edu: #f97316;
  --accent-edu-glow: rgba(249,115,22,.2);
}

/* Security hero glow */
.hero__glow--sec1 {
  width: 600px; height: 600px;
  top: -100px; left: -100px;
  background: radial-gradient(circle, rgba(34,211,163,.1) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite alternate;
}
.hero__glow--sec2 {
  width: 500px; height: 500px;
  bottom: -50px; right: -50px;
  background: radial-gradient(circle, rgba(79,110,247,.08) 0%, transparent 70%);
  animation: pulse 10s ease-in-out infinite alternate-reverse;
}
/* Education hero glow */
.hero__glow--edu1 {
  width: 600px; height: 600px;
  top: -100px; left: -100px;
  background: radial-gradient(circle, rgba(249,115,22,.1) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite alternate;
}
.hero__glow--edu2 {
  width: 500px; height: 500px;
  bottom: -50px; right: -50px;
  background: radial-gradient(circle, rgba(79,110,247,.08) 0%, transparent 70%);
  animation: pulse 10s ease-in-out infinite alternate-reverse;
}

/* Security gradient text */
.gradient-text--sec {
  background: linear-gradient(135deg, #22d3a3, #4f6ef7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
/* Education gradient text */
.gradient-text--edu {
  background: linear-gradient(135deg, #f97316, #f43f5e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Security btn */
.btn--sec {
  background: linear-gradient(135deg, #22d3a3, #4f6ef7);
  box-shadow: 0 4px 20px rgba(34,211,163,.25);
}
.btn--sec:hover {
  box-shadow: 0 8px 32px rgba(34,211,163,.35);
}
/* Education btn */
.btn--edu {
  background: linear-gradient(135deg, #f97316, #f43f5e);
  box-shadow: 0 4px 20px rgba(249,115,22,.25);
}
.btn--edu:hover {
  box-shadow: 0 8px 32px rgba(249,115,22,.35);
}

/* ── Security Architecture Diagram ── */
.arch { margin-top: 24px; }
.arch__diagram {
  display: flex;
  justify-content: center;
  padding: 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.arch__zone {
  position: relative;
  border: 1px dashed;
  border-radius: 12px;
  padding: 28px 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.arch__zone--outer {
  border-color: rgba(255,255,255,.1);
  min-width: 540px;
}
.arch__zone--inner {
  border-color: rgba(34,211,163,.25);
  min-width: 380px;
  background: rgba(34,211,163,.02);
}
.arch__zone--core {
  border-color: rgba(34,211,163,.5);
  background: rgba(34,211,163,.06);
  flex-direction: column;
  gap: 12px;
  padding: 24px 32px;
}
.arch__label {
  position: absolute;
  top: -11px; left: 16px;
  background: var(--bg-2);
  padding: 2px 10px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-3);
  border-radius: 4px;
}
.arch__label--core { color: #22d3a3; }
.arch__items {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.arch__item {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-2);
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  padding: 8px 14px;
  border-radius: 6px;
}

/* ── Education phases ── */
.edu__phases {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 64px;
}
.edu__phase {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 40px;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  transition: var(--transition);
}
.edu__phase:hover {
  border-color: var(--border-2);
}
.edu__phase-num {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--accent-edu);
  background: rgba(249,115,22,.08);
  border: 1px solid rgba(249,115,22,.2);
  padding: 10px 16px;
  border-radius: 8px;
  text-align: center;
  flex-shrink: 0;
}
.edu__phase-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: 12px;
}
.edu__phase-content p {
  color: var(--text-2);
  font-size: .925rem;
  line-height: 1.75;
  margin-bottom: 16px;
}

/* ── Job tracks ── */
.tracks { margin-top: 24px; }
.tracks__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.track__item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: var(--transition);
}
.track__item:hover {
  border-color: rgba(249,115,22,.3);
  transform: translateY(-3px);
}
.track__icon {
  display: block;
  font-size: 1.8rem;
  margin-bottom: 10px;
}
.track__item strong {
  display: block;
  font-size: .925rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.track__item p {
  font-size: .8rem;
  color: var(--text-3);
  line-height: 1.5;
}

/* ── ADS features ── */
.ads__features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.ads__feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
}
.ads__feature:hover {
  border-color: rgba(249,115,22,.25);
  transform: translateY(-4px);
}
.ads__num {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -.05em;
  color: rgba(249,115,22,.2);
  line-height: 1;
  margin-bottom: 16px;
}
.ads__feature h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -.02em;
}
.ads__feature p {
  color: var(--text-2);
  font-size: .9rem;
  line-height: 1.75;
}

/* ============================================================
   SUCCESS STATE
   ============================================================ */
.form__success {
  display: none;
  text-align: center;
  padding: 60px 40px;
}
.form__success.show { display: block; }
.form__success svg {
  width: 64px; height: 64px;
  margin: 0 auto 24px;
  color: var(--accent);
}
.form__success h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.form__success p { color: var(--text-2); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  :root { --section-gap: 96px; }

  .about__cards         { grid-template-columns: repeat(2, 1fr); }
  .biz__item            { grid-template-columns: auto 1fr; }
  .biz__visual          { display: none; }
  .tech__grid           { grid-template-columns: 1fr; max-width: 600px; }
  .contact__wrapper     { grid-template-columns: 1fr; }
  .contact__info        { flex-direction: row; flex-wrap: wrap; }
  .service__grid        { grid-template-columns: repeat(2, 1fr); }
  .ads__features        { grid-template-columns: repeat(2, 1fr); }
  .tracks__grid         { grid-template-columns: repeat(2, 1fr); }
  .process__steps       { gap: 16px; }
  .arch__zone--outer    { min-width: unset; width: 100%; }
  .arch__zone--inner    { min-width: unset; width: 100%; }
}

@media (max-width: 768px) {
  :root { --section-gap: 80px; }

  .nav__links           { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--bg); flex-direction: column; justify-content: center; align-items: center; gap: 32px; z-index: 99; }
  .nav__links.open      { display: flex; }
  .nav__links a         { font-size: 1.2rem; }
  .nav__hamburger       { display: flex; z-index: 101; position: relative; }

  .hero                 { padding: 120px 0 80px; }
  .hero__stats          { flex-direction: column; align-items: flex-start; gap: 16px; }
  .stat__divider        { display: none; }
  .stat                 { padding: 0; }

  .about__cards         { grid-template-columns: 1fr; }
  .biz__item            { grid-template-columns: 1fr; }
  .biz__number          { font-size: 3rem; }
  .service__grid        { grid-template-columns: 1fr; }
  .other__cards         { grid-template-columns: 1fr; }
  .ads__features        { grid-template-columns: 1fr; }
  .tracks__grid         { grid-template-columns: repeat(2, 1fr); }
  .edu__phase           { grid-template-columns: 1fr; gap: 16px; }
  .process__steps       { flex-direction: column; align-items: center; }
  .process__arrow       { transform: rotate(90deg); padding: 0; }
  .arch__diagram        { padding: 20px; overflow-x: auto; }

  .contact__form        { padding: 32px 24px; }
  .form__row            { grid-template-columns: 1fr; }

  .footer__inner        { grid-template-columns: 1fr; gap: 48px; }
  .footer__links        { gap: 40px; }

  .br-pc                { display: none; }
}

@media (max-width: 480px) {
  .hero__actions        { flex-direction: column; }
  .btn                  { width: 100%; justify-content: center; }
  .contact__info        { flex-direction: column; }
  .tracks__grid         { grid-template-columns: 1fr; }
}