/* ============================================================
   零零七云计算 · 007 Cloud Computing
   Enterprise Tech Design System
   ============================================================ */

:root {
  --bg-deep: #f8fbff;
  --bg: #ffffff;
  --bg-alt: #f4f8ff;
  --surface: rgba(46, 107, 255, 0.04);
  --surface-2: rgba(46, 107, 255, 0.06);
  --surface-3: rgba(46, 107, 255, 0.09);
  --border: rgba(46, 107, 255, 0.14);
  --border-strong: rgba(46, 107, 255, 0.45);

  --accent: #2e6bff;
  --accent-bright: #6ea2ff;
  --accent-deep: #1f4fd8;
  --blue: #2e6bff;
  --indigo: #1f4fd8;
  --cyan: #4d8dff;
  --cyan-bright: #7fb2ff;
  --text-1: #0f172a;
  --text-2: #334155;
  --text-3: #64748b;
  --ok: #059669;
  --warn: #d97706;

  --grad-main: linear-gradient(120deg, #6ea2ff 0%, #2e6bff 50%, #1f4fd8 100%);
  --grad-bright: linear-gradient(120deg, #b8d4ff, #4d8dff);
  --grad-blue: linear-gradient(135deg, #2e6bff, #1747d4);

  --radius: 18px;
  --radius-lg: 26px;
  --radius-sm: 12px;
  --shadow-glow: 0 0 40px rgba(46, 107, 255, 0.14);
  --shadow-card: 0 18px 50px -18px rgba(15, 23, 42, 0.12);

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei",
    "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial,
    system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, "Courier New", monospace;

  --container: 1200px;
  --nav-h: 76px;
}

/* ---------- Reset & base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text-2);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: rgba(46, 107, 255, 0.35);
  color: #ffffff;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.section {
  padding: 110px 0;
  position: relative;
}

.section--alt {
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-alt) 100%);
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4 {
  color: var(--text-1);
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.grad-text {
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.sec-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}

.sec-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.22em;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.sec-eyebrow::before,
.sec-eyebrow::after {
  content: "";
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan));
}

.sec-eyebrow::after {
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.sec-title {
  font-size: clamp(28px, 3.6vw, 44px);
  margin-bottom: 18px;
}

.sec-sub {
  font-size: 17px;
  color: var(--text-2);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease,
    color 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.3s ease;
}

.btn:hover svg {
  transform: translateX(4px);
}

.btn--primary {
  background: var(--grad-main);
  background-size: 160% 100%;
  background-position: left center;
  color: #fff;
  box-shadow: 0 10px 34px -8px rgba(46, 107, 255, 0.45);
}

.btn--primary:hover {
  background-position: right center;
  transform: translateY(-2px);
  box-shadow: 0 16px 44px -8px rgba(34, 211, 238, 0.6);
}

.btn--ghost {
  border: 1px solid var(--border-strong);
  color: var(--text-1);
  background: rgba(34, 211, 238, 0.05);
}

.btn--ghost:hover {
  background: rgba(34, 211, 238, 0.12);
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -10px rgba(34, 211, 238, 0.4);
}

.btn--sm {
  padding: 10px 24px;
  font-size: 14px;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 1000;
  transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--border);
  box-shadow: 0 10px 40px -18px rgba(15, 23, 42, 0.16);
}

.nav__inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand__logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--grad-main);
  display: grid;
  place-items: center;
  color: #03121d;
  font-weight: 800;
  font-family: var(--font-mono);
  font-size: 19px;
  box-shadow: 0 8px 26px -6px rgba(34, 211, 238, 0.5);
  position: relative;
}

.brand__logo::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 12px;
  background: var(--grad-main);
  filter: blur(14px);
  opacity: 0.55;
  z-index: -1;
}

.brand__name {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-1);
  letter-spacing: 0.04em;
}

.brand__name small {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--cyan);
  margin-top: 1px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.nav__link {
  padding: 9px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  border-radius: 8px;
  transition: color 0.25s ease, background 0.25s ease;
  position: relative;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-bright);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.nav__link:hover,
.nav__link.active {
  color: var(--text-1);
}

.nav__link:hover::after,
.nav__link.active::after {
  transform: scaleX(1);
}

.nav__cta {
  margin-left: 12px;
}

.nav__burger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border);
  place-items: center;
  background: var(--surface);
}

.nav__burger span,
.nav__burger span::before,
.nav__burger span::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-1);
  transition: transform 0.3s ease, opacity 0.3s ease;
  position: relative;
}

.nav__burger span::before {
  position: absolute;
  top: -6px;
}

.nav__burger span::after {
  position: absolute;
  top: 6px;
}

.nav__burger.open span {
  background: transparent;
}

.nav__burger.open span::before {
  top: 0;
  transform: rotate(45deg);
}

.nav__burger.open span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ---------- Mobile menu ---------- */
.mobile-menu {
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 999;
  padding: 18px 24px 28px;
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.35s ease, opacity 0.35s ease;
}

.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu__link {
  display: block;
  padding: 14px 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  border-bottom: 1px solid var(--border);
}

.mobile-menu__link:hover {
  color: var(--cyan);
}

.mobile-menu__cta {
  margin-top: 18px;
  width: 100%;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--nav-h) + 40px) 0 80px;
  background:
    radial-gradient(900px 500px at 78% -10%, rgba(59, 130, 246, 0.16), transparent 60%),
    radial-gradient(800px 480px at 12% 20%, rgba(30, 64, 175, 0.12), transparent 60%),
    radial-gradient(700px 420px at 50% 110%, rgba(34, 211, 238, 0.1), transparent 60%),
    var(--bg-deep);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(184, 212, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 187, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 30%, transparent 75%);
}

.hero__orbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  animation: float 12s ease-in-out infinite;
}

.hero__orb--1 {
  width: 420px;
  height: 420px;
  left: -120px;
  top: 8%;
  background: radial-gradient(circle, rgba(31, 79, 216, 0.5), transparent 70%);
}

.hero__orb--2 {
  width: 480px;
  height: 480px;
  right: -140px;
  top: 20%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.42), transparent 70%);
  animation-delay: -4s;
}

.hero__orb--3 {
  width: 340px;
  height: 340px;
  left: 38%;
  bottom: -120px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.4), transparent 70%);
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-36px) scale(1.06); }
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 940px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  border-radius: 50px;
  border: 1px solid var(--border-strong);
  background: rgba(34, 211, 238, 0.08);
  font-size: 13.5px;
  color: var(--accent-bright);
  letter-spacing: 0.06em;
  margin-bottom: 30px;
}

.hero__badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 12px var(--ok);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.8); }
}

.hero__title {
  font-size: clamp(40px, 6.4vw, 72px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 0.01em;
  margin-bottom: 26px;
}

.hero__desc {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-2);
  max-width: 680px;
  margin: 0 auto 42px;
  line-height: 1.9;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero__meta {
  margin-top: 54px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero__meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 13.5px;
  color: var(--text-2);
}

.hero__meta-chip strong {
  color: var(--cyan);
  font-weight: 700;
}

/* ---------- Stats ---------- */
.stats {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.82);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  padding: 56px 0;
}

.stat {
  text-align: center;
  position: relative;
}

.stat:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -14px;
  top: 20%;
  height: 60%;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--border-strong), transparent);
}

.stat__num {
  font-size: clamp(32px, 3.4vw, 48px);
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-1);
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}

.stat__num em {
  font-style: normal;
  font-size: 0.6em;
  color: var(--cyan);
  margin-left: 2px;
}

.stat__label {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--text-2);
  letter-spacing: 0.06em;
}

/* ---------- Feature cards (products) ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  padding: 34px 30px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: transform 0.35s ease, border-color 0.35s ease, background 0.35s ease,
    box-shadow 0.35s ease;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px 180px at 50% -40px, rgba(34, 211, 238, 0.12), transparent 70%);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-strong);
  background: var(--surface-2);
  box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.14), rgba(37, 99, 235, 0.14));
  border: 1px solid var(--border-strong);
  color: var(--cyan);
  margin-bottom: 22px;
  position: relative;
  z-index: 1;
}

.feature-card__icon svg {
  width: 28px;
  height: 28px;
}

.feature-card__title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.feature-card__desc {
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.85;
  position: relative;
  z-index: 1;
}

.feature-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
  position: relative;
  z-index: 1;
}

.feature-card__link svg {
  width: 15px;
  height: 15px;
  transition: transform 0.3s ease;
}

.feature-card:hover .feature-card__link svg {
  transform: translateX(4px);
}

/* ---------- Solutions tabs / rows ---------- */
.solution-row {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

.solution-row:first-child {
  border-top: none;
}

.solution-row:nth-child(even) .solution-row__visual {
  order: -1;
}

.solution-row__eyebrow {
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 14px;
}

.solution-row__title {
  font-size: clamp(24px, 2.8vw, 34px);
  margin-bottom: 18px;
}

.solution-row__desc {
  font-size: 15.5px;
  line-height: 1.9;
  margin-bottom: 26px;
  color: var(--text-2);
}

.solution-row__points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 26px;
}

.solution-row__point {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: var(--text-1);
}

.solution-row__point svg {
  width: 18px;
  height: 18px;
  color: var(--ok);
  flex-shrink: 0;
}

.solution-row__visual {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    linear-gradient(160deg, rgba(34, 211, 238, 0.06), rgba(139, 92, 246, 0.06)),
    var(--surface);
  min-height: 320px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.solution-row__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 187, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 187, 255, 0.06) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse at 50% 50%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, #000 20%, transparent 80%);
}

.solution-row__visual-center {
  position: relative;
  z-index: 1;
  width: 150px;
  height: 150px;
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.16), rgba(46, 107, 255, 0.16));
  border: 1px solid var(--border-strong);
  display: grid;
  place-items: center;
  color: var(--cyan);
  box-shadow: var(--shadow-glow);
  animation: breathe 5s ease-in-out infinite;
}

.solution-row__visual-center svg {
  width: 64px;
  height: 64px;
}

@keyframes breathe {
  0%, 100% { box-shadow: 0 0 40px rgba(34, 211, 238, 0.2); transform: scale(1); }
  50% { box-shadow: 0 0 70px rgba(59, 130, 246, 0.35); transform: scale(1.04); }
}

.solution-row__visual-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 14px var(--cyan);
  z-index: 1;
}

/* ---------- Why us ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.why-card {
  padding: 30px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.why-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-glow);
}

.why-card__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin-bottom: 14px;
}

.why-card__title {
  font-size: 17px;
  margin-bottom: 10px;
}

.why-card__desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
}

/* ---------- Regions / data centers ---------- */
.regions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.region-card {
  padding: 30px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.region-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
}

.region-card__flag {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
  border: 1px solid var(--border-strong);
  color: var(--cyan-bright);
  margin-bottom: 18px;
  font-weight: 800;
}

.region-card__name {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}

.region-card__desc {
  font-size: 13.5px;
  color: var(--text-3);
}

/* ---------- Case / logo wall ---------- */
.marquee {
  overflow: hidden;
  position: relative;
  padding: 10px 0;
}

.marquee::before,
.marquee::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}

.marquee::before {
  left: 0;
  background: linear-gradient(90deg, var(--bg-deep), transparent);
}

.marquee::after {
  right: 0;
  background: linear-gradient(270deg, var(--bg-deep), transparent);
}

.marquee__track {
  display: flex;
  gap: 20px;
  width: max-content;
  animation: marquee 36s linear infinite;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.logo-chip {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 34px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-weight: 700;
  font-size: 17px;
  color: var(--text-2);
  white-space: nowrap;
  transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.logo-chip:hover {
  color: var(--text-1);
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.logo-chip span {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(99, 102, 241, 0.18));
  color: var(--cyan);
  font-size: 13px;
}

/* ---------- CTA banner ---------- */
.cta {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  background:
    radial-gradient(600px 260px at 15% 0%, rgba(34, 211, 238, 0.14), transparent 65%),
    radial-gradient(600px 260px at 90% 100%, rgba(139, 92, 246, 0.14), transparent 65%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.98), rgba(244, 248, 255, 0.98));
  padding: 70px 60px;
  text-align: center;
  overflow: hidden;
}

.cta__title {
  font-size: clamp(26px, 3.2vw, 38px);
  margin-bottom: 16px;
}

.cta__desc {
  max-width: 560px;
  margin: 0 auto 36px;
  color: var(--text-2);
  font-size: 15.5px;
}

.cta__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- Page hero (sub pages) ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 90px) 0 80px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(700px 380px at 50% -10%, rgba(34, 211, 238, 0.14), transparent 65%),
    radial-gradient(600px 320px at 85% 20%, rgba(139, 92, 246, 0.12), transparent 60%),
    var(--bg-deep);
}

.page-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 187, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 187, 255, 0.05) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 70% 90% at 50% 0%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 90% at 50% 0%, #000 20%, transparent 75%);
}

.page-hero__content {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
}

.page-hero__crumbs {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-3);
  margin-bottom: 22px;
  letter-spacing: 0.08em;
}

.page-hero__crumbs a:hover {
  color: var(--cyan);
}

.page-hero__crumbs .sep {
  color: var(--border-strong);
}

.page-hero__title {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 800;
  margin-bottom: 18px;
}

.page-hero__desc {
  font-size: 17px;
  color: var(--text-2);
  line-height: 1.9;
}

/* ---------- Product detail ---------- */
.product-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 36px 32px;
  overflow: hidden;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-glow);
}

.product-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.product-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.14), rgba(99, 102, 241, 0.16));
  border: 1px solid var(--border-strong);
  color: var(--cyan);
}

.product-card__icon svg {
  width: 26px;
  height: 26px;
}

.product-card__tag {
  font-size: 11.5px;
  padding: 5px 12px;
  border-radius: 50px;
  border: 1px solid var(--border-strong);
  color: var(--cyan);
  letter-spacing: 0.08em;
  background: rgba(34, 211, 238, 0.07);
}

.product-card__title {
  font-size: 19px;
  margin-bottom: 12px;
}

.product-card__desc {
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.85;
  margin-bottom: 20px;
}

.product-card__features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-card__features li {
  font-size: 12.5px;
  padding: 5px 13px;
  border-radius: 50px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-2);
}

.product-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
}

.product-card__link svg {
  width: 15px;
  height: 15px;
  transition: transform 0.3s ease;
}

.product-card:hover .product-card__link svg {
  transform: translateX(4px);
}

/* ---------- Comparison / spec table ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.spec-table th,
.spec-table td {
  padding: 16px 20px;
  text-align: left;
  font-size: 14.5px;
  border-bottom: 1px solid var(--border);
}

.spec-table thead th {
  background: var(--surface-2);
  color: var(--text-1);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.spec-table tbody tr:last-child td {
  border-bottom: none;
}

.spec-table tbody tr {
  transition: background 0.25s ease;
}

.spec-table tbody tr:hover {
  background: var(--surface);
}

.spec-table td:first-child {
  color: var(--text-1);
  font-weight: 600;
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--blue), transparent);
  opacity: 0.6;
}

.timeline__item {
  position: relative;
  padding-bottom: 44px;
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: -36px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.6);
}

.timeline__year {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.timeline__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline__desc {
  font-size: 14.5px;
  color: var(--text-2);
}

/* ---------- Values ---------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.value-card {
  padding: 32px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  text-align: center;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.value-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
}

.value-card__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(99, 102, 241, 0.15));
  border: 1px solid var(--border-strong);
  color: var(--cyan);
}

.value-card__icon svg {
  width: 24px;
  height: 24px;
}

.value-card__title {
  font-size: 17px;
  margin-bottom: 10px;
}

.value-card__desc {
  font-size: 13.5px;
  color: var(--text-2);
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: grid;
  gap: 18px;
}

.contact-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color 0.3s ease;
}

.contact-item:hover {
  border-color: var(--border-strong);
}

.contact-item__icon {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.14), rgba(99, 102, 241, 0.16));
  border: 1px solid var(--border-strong);
  color: var(--cyan);
}

.contact-item__icon svg {
  width: 22px;
  height: 22px;
}

.contact-item__label {
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.contact-item__value {
  font-size: 16px;
  color: var(--text-1);
  font-weight: 600;
  line-height: 1.6;
}

.contact-form {
  padding: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field--full {
  grid-column: 1 / -1;
}

.form-field label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: 0.04em;
}

.form-field input,
.form-field select,
.form-field textarea {
  padding: 13px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(46, 107, 255, 0.04);
  color: var(--text-1);
  font-size: 14.5px;
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--text-3);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
  background: rgba(255, 255, 255, 0.06);
}

.form-field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.form-field select option {
  background: var(--bg-alt);
  color: var(--text-1);
}

.form-submit {
  margin-top: 24px;
  width: 100%;
}

.form-msg {
  display: none;
  margin-top: 16px;
  padding: 13px 18px;
  border-radius: 12px;
  font-size: 14px;
  border: 1px solid rgba(52, 211, 153, 0.4);
  background: rgba(52, 211, 153, 0.08);
  color: var(--ok);
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-deep);
  padding-top: 72px;
  position: relative;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer__brand-desc {
  font-size: 14px;
  color: var(--text-3);
  margin: 18px 0 24px;
  line-height: 1.9;
  max-width: 300px;
}

.footer__socials {
  display: flex;
  gap: 12px;
}

.footer__social {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  transition: color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.footer__social:hover {
  color: var(--cyan);
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.footer__social svg {
  width: 18px;
  height: 18px;
}

.footer__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.footer__links {
  display: grid;
  gap: 12px;
}

.footer__links a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.25s ease, padding-left 0.25s ease;
}

.footer__links a:hover {
  color: var(--cyan);
  padding-left: 5px;
}

.footer__contact li {
  display: flex;
  gap: 12px;
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 14px;
  align-items: flex-start;
}

.footer__contact svg {
  width: 17px;
  height: 17px;
  color: var(--cyan);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer__bottom {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-3);
}

.footer__bottom a {
  color: var(--text-3);
}

.footer__bottom a:hover {
  color: var(--cyan);
}

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  border: 1px solid var(--border-strong);
  background: rgba(244, 248, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: grid;
  place-items: center;
  color: var(--cyan);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.to-top:hover {
  box-shadow: var(--shadow-glow);
}

.to-top svg {
  width: 20px;
  height: 20px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .feature-grid,
  .product-band {
    grid-template-columns: repeat(2, 1fr);
  }

  .why-grid,
  .regions {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .solution-row {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .solution-row:nth-child(even) .solution-row__visual {
    order: 0;
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 20px;
  }

  .stat:nth-child(2)::after {
    display: none;
  }

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

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

@media (max-width: 768px) {
  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__burger {
    display: grid;
  }

  .section {
    padding: 76px 0;
  }

  .sec-head {
    margin-bottom: 44px;
  }

  .feature-grid,
  .product-band,
  .why-grid,
  .regions,
  .values-grid {
    grid-template-columns: 1fr;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .cta {
    padding: 48px 28px;
  }

  .cta__actions .btn {
    width: 100%;
  }

  .contact-form {
    padding: 28px 22px;
  }

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

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .solution-row__points {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .stats__grid {
    grid-template-columns: 1fr;
  }

  .stat::after {
    display: none;
  }

  .spec-table th,
  .spec-table td {
    padding: 12px 14px;
    font-size: 13px;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}