:root {
  --bg: #eef3f7;
  --bg-deep: #d9e4ee;
  --ink: #0b1c2c;
  --muted: #4d6478;
  --line: rgba(11, 28, 44, 0.12);
  --accent: #00a67d;
  --accent-2: #0b6bcb;
  --panel: rgba(255, 255, 255, 0.72);
  --panel-solid: #f7fafc;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Orbitron", "Noto Sans SC", sans-serif;
  --radius: 2px;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
}

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

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.grid-bg {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 70% 45% at 85% 5%, rgba(0, 166, 125, 0.18), transparent 55%),
    radial-gradient(ellipse 55% 40% at 5% 90%, rgba(11, 107, 203, 0.14), transparent 50%),
    linear-gradient(165deg, #f4f8fb 0%, #e7eef5 42%, #dce7f0 100%);
}

.grid-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11, 28, 44, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 28, 44, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 65% at 60% 20%, #000 15%, transparent 78%);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  backdrop-filter: blur(12px);
  background: rgba(244, 248, 251, 0.78);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(244, 248, 251, 0.92);
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
}

.logo-mark {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--accent);
  text-transform: lowercase;
}

.logo-text {
  font-size: 0.95rem;
  font-weight: 600;
}

.nav {
  display: none;
  gap: 1.5rem;
  align-items: center;
}

.nav a {
  font-size: 0.9rem;
  color: var(--muted);
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--ink);
}

.nav-cta {
  color: #fff !important;
  background: var(--ink);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius);
  font-weight: 600;
}

.menu-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: transparent;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 0 10px;
  cursor: pointer;
}

.menu-btn span {
  display: block;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s ease;
}

.menu-btn.open span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.menu-btn.open span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  z-index: 39;
  display: flex;
  flex-direction: column;
  padding: 1rem 1.5rem 1.5rem;
  background: rgba(247, 250, 252, 0.98);
  border-bottom: 1px solid var(--line);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav a {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  align-items: center;
  gap: 2.5rem;
  padding: 7rem 1.5rem 4rem;
  max-width: var(--max);
  margin: 0 auto;
  position: relative;
  grid-template-areas:
    "copy"
    "visual";
  overflow: visible;
}

.hero-glow {
  position: absolute;
  width: min(520px, 90vw);
  height: min(520px, 90vw);
  right: -8%;
  top: 12%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 40% 40%, rgba(0, 166, 125, 0.22), transparent 55%),
    radial-gradient(circle at 70% 70%, rgba(11, 107, 203, 0.18), transparent 50%);
  filter: blur(8px);
  z-index: 0;
  pointer-events: none;
  animation: glow-breathe 6s ease-in-out infinite;
}

.hero-copy {
  position: relative;
  z-index: 2;
  grid-area: copy;
}

.brand-line {
  margin: 0 0 1.15rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
  animation: rise 0.8s ease both;
}

.brand-domain {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4vw, 2rem);
  letter-spacing: 0.02em;
  color: var(--accent);
  text-transform: lowercase;
}

.brand-divider {
  width: 1px;
  height: 1.1rem;
  background: var(--line);
}

.brand-name {
  font-size: clamp(0.95rem, 2.4vw, 1.1rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.25rem, 7vw, 4.3rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.025em;
  animation: rise 0.9s 0.08s ease both;
}

.h1-accent {
  background: linear-gradient(105deg, var(--ink) 35%, var(--accent-2) 72%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  margin: 1.25rem 0 0;
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  animation: rise 1s 0.16s ease both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
  animation: rise 1.05s 0.22s ease both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.82rem 1.35rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--ink);
  color: #fff;
}

.btn-primary:hover {
  background: #16324a;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--accent-2);
  color: var(--accent-2);
}

.hero-visual {
  position: relative;
  grid-area: visual;
  width: min(460px, 90vw);
  aspect-ratio: 1;
  z-index: 1;
  justify-self: center;
  --parallax-x: 0px;
  --parallax-y: 0px;
  transform: translate3d(var(--parallax-x), var(--parallax-y), 0);
  transition: transform 0.15s ease-out;
}

.hero-radar {
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.75) 0%, rgba(232, 241, 248, 0.35) 42%, transparent 68%);
  box-shadow: inset 0 0 0 1px rgba(11, 28, 44, 0.06);
}

.radar-sweep {
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    transparent 0deg,
    rgba(0, 166, 125, 0.16) 40deg,
    transparent 70deg
  );
  animation: spin 8s linear infinite;
  mask-image: radial-gradient(circle, transparent 28%, #000 29%, #000 72%, transparent 73%);
}

.orbit {
  position: absolute;
  inset: 8%;
  border: 1px dashed rgba(0, 166, 125, 0.35);
  border-radius: 50%;
  animation: spin 28s linear infinite;
}

.orbit-2 {
  inset: 20%;
  border-style: solid;
  border-color: rgba(11, 107, 203, 0.28);
  animation-duration: 18s;
  animation-direction: reverse;
}

.orbit-3 {
  inset: 34%;
  border-style: solid;
  border-color: rgba(11, 28, 44, 0.16);
  animation-duration: 12s;
}

.orbit i {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 166, 125, 0.12);
}

.orbit i:nth-child(1) {
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
}

.orbit i:nth-child(2) {
  bottom: 12%;
  right: 8%;
  background: var(--accent-2);
  box-shadow: 0 0 0 4px rgba(11, 107, 203, 0.12);
}

.orbit-2 i:nth-child(1) {
  top: 18%;
  left: 4%;
  background: var(--accent-2);
}

.orbit-2 i:nth-child(2) {
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 50%);
  background: var(--ink);
  box-shadow: 0 0 0 4px rgba(11, 28, 44, 0.08);
}

.orbit-3 i:nth-child(1) {
  top: 50%;
  right: 0;
  transform: translate(50%, -50%);
  background: var(--accent);
}

.hero-core {
  position: absolute;
  inset: 36%;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(145deg, #ffffff, #e4eef6);
  border: 1px solid var(--line);
  box-shadow: 0 12px 36px rgba(11, 28, 44, 0.08);
  z-index: 2;
}

.logo-mark-hero {
  position: relative;
  z-index: 2;
  font-size: clamp(0.95rem, 2.2vw, 1.25rem);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.core-ring,
.core-pulse {
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid rgba(0, 166, 125, 0.35);
}

.core-pulse {
  animation: pulse 2.4s ease-out infinite;
}

.scan-line {
  position: absolute;
  left: 14%;
  right: 14%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-2), transparent);
  animation: scan 4s ease-in-out infinite;
  opacity: 0.65;
  z-index: 3;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.65;
  }
  100% {
    transform: scale(1.4);
    opacity: 0;
  }
}

@keyframes scan {
  0%,
  100% {
    top: 22%;
  }
  50% {
    top: 72%;
  }
}

@keyframes glow-breathe {
  0%,
  100% {
    opacity: 0.75;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.06);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.marquee {
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
  overflow: hidden;
  padding: 0.95rem 0;
}

.marquee-track {
  display: flex;
  gap: 2.5rem;
  width: max-content;
  animation: marquee 28s linear infinite;
  font-family: var(--display);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.marquee-track span {
  white-space: nowrap;
}

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

.section {
  padding: 5.5rem 1.5rem;
  max-width: var(--max);
  margin: 0 auto;
}

.section-head {
  margin-bottom: 2.5rem;
  max-width: 36rem;
}

.section-head h2,
.product-copy h2,
.contact-copy h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-head p,
.product-copy > p,
.contact-copy > p {
  margin: 0;
  color: var(--muted);
}

.service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.service-list li {
  background: var(--panel-solid);
  padding: 1.55rem 1.35rem;
  transition: background 0.25s ease;
}

.service-list li:hover {
  background: #fff;
}

.svc-num {
  display: block;
  font-family: var(--display);
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  letter-spacing: 0.08em;
}

.service-list h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.service-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.product {
  max-width: none;
  padding-inline: 0;
  background: linear-gradient(180deg, transparent, rgba(0, 166, 125, 0.06), transparent);
}

.product-stage {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--accent-2);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  font-weight: 700;
}

.feature-ticks {
  margin: 1.5rem 0 2rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.feature-ticks li {
  position: relative;
  padding-left: 1.25rem;
}

.feature-ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 8px;
  height: 8px;
  background: var(--accent);
}

.phone-mock {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 420px;
}

.phone-stack {
  position: relative;
  width: min(300px, 78vw);
  height: min(560px, 72vh);
}

.phone-bezel {
  margin: 0;
  border-radius: 28px;
  padding: 10px;
  background: linear-gradient(160deg, #1e3348, #0d1b28);
  border: 1px solid rgba(11, 28, 44, 0.35);
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(11, 28, 44, 0.18);
}

.phone-bezel img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
  background: #0a1622;
}

.phone-back {
  position: absolute;
  width: 78%;
  top: 8%;
  right: -6%;
  transform: rotate(8deg);
  opacity: 0.92;
  z-index: 1;
}

.phone-front {
  position: absolute;
  width: 86%;
  left: 0;
  bottom: 0;
  z-index: 2;
  animation: float 5s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes blink {
  50% {
    opacity: 0.35;
  }
}

.case-grid {
  display: grid;
  gap: 2rem 1.5rem;
}

.case {
  display: grid;
  gap: 0.95rem;
}

.case-visual {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background:
    linear-gradient(145deg, #e8eef4, #f7fafc);
  position: relative;
  border: 1px solid var(--line);
}

.case-visual::after {
  content: none;
}

.case-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  transition: transform 0.55s ease;
}

.case:hover .case-visual img {
  transform: scale(1.05);
}

.case-body {
  padding: 0;
}

.case-body span {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--accent-2);
  margin-bottom: 0.4rem;
  font-weight: 600;
}

.case-body h3 {
  margin: 0 0 0.5rem;
  font-size: 1.12rem;
}

.case-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.server-plans {
  display: grid;
  gap: 1rem;
}

.plan {
  padding: 1.75rem 1.5rem;
  border: 1px solid var(--line);
  background: var(--panel);
}

.plan-featured {
  border-color: rgba(0, 166, 125, 0.55);
  background:
    linear-gradient(180deg, rgba(0, 166, 125, 0.1), transparent 42%),
    #fff;
}

.plan h3 {
  margin: 0;
  font-size: 1.2rem;
}

.price {
  margin: 0.75rem 0 1.25rem;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.price em {
  font-style: normal;
  font-family: var(--display);
  font-size: 1.8rem;
  color: var(--accent);
}

.price span {
  color: var(--muted);
  font-size: 0.85rem;
}

.plan ul {
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.plan ul li::before {
  content: "— ";
  color: var(--accent);
}

.stats {
  padding-block: 3rem;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  border-block: 1px solid var(--line);
  padding-block: 2rem;
}

.stat {
  text-align: center;
}

.stat strong {
  display: block;
  font-family: var(--display);
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  color: var(--accent);
  line-height: 1.2;
}

.stat span {
  color: var(--muted);
  font-size: 0.85rem;
}

.contact {
  max-width: none;
  padding-inline: 0;
}

.contact-panel {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  gap: 2.5rem;
}

.contact-meta {
  margin: 2rem 0 0;
  display: grid;
  gap: 1rem;
}

.contact-meta div {
  display: grid;
  gap: 0.2rem;
}

.contact-meta dt {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.contact-meta dd {
  margin: 0;
  font-size: 1rem;
}

.contact-meta a {
  color: var(--accent-2);
  font-weight: 600;
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: #fff;
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
}

.contact-form span {
  font-size: 0.8rem;
  color: var(--muted);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  background: #f4f8fb;
  color: var(--ink);
  font: inherit;
  border-radius: var(--radius);
  outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--accent-2);
  background: #fff;
}

.form-note {
  margin: 0;
  color: var(--accent);
  font-size: 0.9rem;
}

.site-footer {
  padding: 2.5rem 1.5rem 3rem;
  border-top: 1px solid var(--line);
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 1.25rem;
}

.footer-brand {
  display: flex;
  gap: 0.85rem;
  align-items: center;
}

.footer-brand strong {
  display: block;
  font-size: 0.95rem;
}

.footer-brand p {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.copyright {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.copyright .icp {
  color: var(--muted);
  transition: color 0.2s ease;
}

.copyright .icp:hover {
  color: var(--accent-2);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (min-width: 720px) {
  .nav {
    display: flex;
  }

  .menu-btn {
    display: none;
  }

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

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

  .server-plans {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats-row {
    grid-template-columns: repeat(4, 1fr);
  }

  .contact-panel {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .hero {
    grid-template-columns: 1.05fr 0.95fr;
    grid-template-areas: "copy visual";
    padding-top: 8rem;
    gap: 1.5rem;
  }

  .hero-glow {
    right: 0;
    top: 18%;
  }

  .hero-visual {
    width: min(480px, 100%);
    justify-self: end;
  }

  .product-stage {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .service-list {
    grid-template-columns: repeat(3, 1fr);
  }

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