:root {
  --ink: #132334;
  --muted: #5b6876;
  --line: #d9e2ea;
  --paper: #ffffff;
  --mist: #f3f8fb;
  --deep: #17324d;
  --blue: #176fae;
  --blue-2: #0f88c8;
  --green: #31a96b;
  --green-dark: #208251;
  --shadow: 0 18px 45px rgba(19, 35, 52, 0.12);
  --radius: 8px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
}

img, svg { max-width: 100%; height: auto; }
a { color: var(--blue); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 20;
  padding: 10px 14px;
  background: var(--deep);
  color: #fff;
  border-radius: 6px;
}

.skip-link:focus { top: 14px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.container {
  width: min(1140px, calc(100% - 32px));
  margin: 0 auto;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--deep);
}

.brand img {
  width: 210px;
  display: block;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--deep);
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  width: 20px;
  height: 2px;
  background: currentColor;
  display: block;
  position: absolute;
}

.nav-toggle span { transform: translateY(0); }
.nav-toggle::before { transform: translateY(-7px); }
.nav-toggle::after { transform: translateY(7px); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-menu a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 8px 12px;
  border-radius: 7px;
  color: var(--deep);
  font-size: 0.96rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-menu a:hover,
.nav-menu a:focus-visible,
.nav-menu a[aria-current="page"] {
  background: var(--mist);
  outline: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--green);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 10px 22px rgba(49, 169, 107, 0.22);
}

.button:hover,
.button:focus-visible {
  background: var(--green-dark);
  color: #fff;
}

.button.secondary {
  background: #fff;
  color: var(--deep);
  border-color: var(--line);
  box-shadow: none;
}

.hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(19, 35, 52, 0.9), rgba(23, 50, 77, 0.78)),
    radial-gradient(circle at 78% 34%, rgba(49, 169, 107, 0.42), transparent 26%),
    linear-gradient(135deg, #17324d, #176fae);
  color: #fff;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 auto;
  width: min(48vw, 600px);
  height: min(48vw, 600px);
  background:
    linear-gradient(90deg, transparent 48%, rgba(255,255,255,0.16) 49%, rgba(255,255,255,0.16) 51%, transparent 52%),
    linear-gradient(0deg, transparent 48%, rgba(255,255,255,0.16) 49%, rgba(255,255,255,0.16) 51%, transparent 52%);
  background-size: 72px 72px;
  opacity: 0.6;
  transform: translate(8%, 8%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 48px;
  align-items: center;
  min-height: 660px;
  padding: 86px 0 80px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #a9f1cc;
  font-size: 0.83rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2, h3 {
  color: inherit;
  line-height: 1.08;
}

h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.55rem, 6vw, 5.2rem);
}

.hero p {
  max-width: 660px;
  margin: 24px 0 0;
  color: rgba(255,255,255,0.86);
  font-size: 1.15rem;
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.system-panel {
  padding: 24px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.1);
  box-shadow: var(--shadow);
}

.stack-map {
  display: grid;
  gap: 14px;
}

.stack-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
  align-items: center;
}

.stack-label {
  color: #d9f7e7;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.stack-node {
  min-height: 58px;
  padding: 14px;
  border: 1px solid rgba(255,255,255,0.24);
  border-radius: 8px;
  background: rgba(255,255,255,0.13);
}

.stack-node strong { display: block; }
.stack-node span { color: rgba(255,255,255,0.76); font-size: 0.9rem; }

.section {
  padding: 86px 0;
}

.section.soft {
  background: var(--mist);
}

.section-header {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-header.center {
  margin-inline: auto;
  text-align: center;
}

.section-header h2,
.page-title h1 {
  margin: 0;
  color: var(--deep);
  font-size: clamp(2rem, 4vw, 3.35rem);
}

.section-header p,
.page-title p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.grid {
  display: grid;
  gap: 22px;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 26px;
  box-shadow: 0 10px 26px rgba(19, 35, 52, 0.06);
}

.card h3 {
  margin: 0 0 10px;
  color: var(--deep);
  font-size: 1.25rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.icon {
  width: 44px;
  height: 44px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 8px;
  background: #e9f7ef;
  color: var(--green-dark);
}

.icon svg {
  width: 24px;
  height: 24px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 54px;
  align-items: center;
}

.check-list,
.plain-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 34px;
  color: var(--muted);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--green);
}

.check-list li::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 0.64em;
  width: 6px;
  height: 10px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.visual-board {
  display: grid;
  gap: 14px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.board-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.status-dot {
  width: 10px;
  height: 10px;
  display: inline-block;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 18px 0 0 #f4b740, 36px 0 0 #df5c58;
}

.meter {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7eef4;
}

.meter span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--green));
}

.board-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.mini {
  min-height: 116px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--mist);
}

.mini strong {
  display: block;
  color: var(--deep);
}

.mini span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.page-hero {
  background: var(--mist);
  border-bottom: 1px solid var(--line);
}

.page-title {
  padding: 78px 0 70px;
  max-width: 820px;
}

.service-detail {
  display: grid;
  gap: 28px;
}

.service-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.service-row h2 {
  margin: 0;
  color: var(--deep);
  font-size: 1.65rem;
}

.service-row p {
  margin: 0 0 16px;
  color: var(--muted);
}

.support-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.support-download {
  grid-column: 1 / -1;
}

.number-list {
  margin: 0;
  padding-left: 22px;
  color: var(--muted);
}

.number-list li {
  margin: 8px 0;
}

.support-settings {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.support-settings li {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--mist);
}

.support-settings span {
  color: var(--muted);
  font-weight: 800;
}

.support-settings strong {
  overflow-wrap: anywhere;
}

.fine-print {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.support-login {
  display: grid;
  gap: 16px;
  max-width: 520px;
}

.support-login .button {
  width: fit-content;
}

.form-error {
  margin: 0 0 14px;
  padding: 12px 14px;
  border: 1px solid #f2b8b8;
  border-radius: 8px;
  background: #fff3f3;
  color: #9f1d1d;
  font-weight: 800;
}

.cta-band {
  background: var(--deep);
  color: #fff;
  padding: 62px 0;
}

.cta-band .container {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: center;
}

.cta-band h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.cta-band p {
  max-width: 650px;
  margin: 12px 0 0;
  color: rgba(255,255,255,0.78);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 44px;
  align-items: start;
}

.contact-note {
  border-left: 4px solid var(--green);
  padding: 16px 18px;
  background: var(--mist);
  color: var(--muted);
}

.form {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 7px;
}

.field label {
  color: var(--deep);
  font-weight: 800;
}

.field input,
.field textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  color: var(--ink);
  font: inherit;
}

.field textarea {
  min-height: 142px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  outline: 3px solid rgba(23, 111, 174, 0.18);
  border-color: var(--blue);
}

.site-footer {
  padding: 42px 0;
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 34px;
}

.footer-logo {
  width: 210px;
}

.footer-grid h2,
.footer-grid h3 {
  margin: 0 0 12px;
  color: var(--deep);
  font-size: 1rem;
}

.footer-grid p,
.footer-grid a,
.footer-grid li {
  color: var(--muted);
}

.footer-grid ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.copyright {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; position: relative; }
  .nav-menu {
    position: absolute;
    inset: 78px 16px auto 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow);
  }
  .nav-menu.is-open { display: flex; }
  .nav-menu a { justify-content: flex-start; width: 100%; }
  .hero-grid,
  .split,
  .contact-grid,
  .support-layout,
  .grid.two,
  .grid.three,
  .footer-grid,
  .cta-band .container {
    grid-template-columns: 1fr;
  }
  .cta-band .container { display: grid; }
  .hero-grid {
    min-height: auto;
    padding: 64px 0 56px;
  }
  .service-row { grid-template-columns: 1fr; gap: 12px; }
}

@media (max-width: 560px) {
  .container { width: min(100% - 24px, 1140px); }
  .brand img,
  .footer-logo { width: 184px; }
  .section { padding: 62px 0; }
  .page-title { padding: 56px 0; }
  .hero-actions,
  .section-actions { flex-direction: column; }
  .button { width: 100%; }
  .stack-row,
  .board-grid,
  .support-settings li { grid-template-columns: 1fr; }
}