/* ==========================================================================
   上海星沄软件科技有限公司 — 企业官网样式
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --ink-950: #04070d;
  --ink-900: #05090f;
  --ink-850: #070d17;
  --ink-800: #0a1422;
  --ink-750: #0d1a2b;

  --txt: #e9effb;
  --txt-dim: #9db0cd;
  --txt-mute: #6b7f9f;

  --brand: #2b8fe6;
  --brand-2: #4cc8ff;
  --brand-3: #7fe8ff;
  --lime: #9be05a;
  --deep: #023c62;

  --line: rgba(132, 173, 235, 0.13);
  --line-strong: rgba(132, 173, 235, 0.26);

  --grad-text: linear-gradient(100deg, #8ce9ff 0%, #59a9ff 42%, #a7e86a 100%);
  --grad-brand: linear-gradient(100deg, #1f7dd0 0%, #3fb4f5 55%, #6fdcff 100%);

  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;

  --container: 1200px;
  --ease: cubic-bezier(0.22, 0.68, 0.16, 1);

  --font: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC",
    "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Cascadia Mono",
    Consolas, "Liberation Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink-900);
  color: var(--txt);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.025em;
}

p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
svg { display: block; }

::selection { background: rgba(76, 200, 255, 0.28); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #060b14; }
::-webkit-scrollbar-thumb {
  background: #1b2b42;
  border-radius: 8px;
  border: 2px solid #060b14;
}
::-webkit-scrollbar-thumb:hover { background: #29486e; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.section {
  position: relative;
  padding: 118px 0;
}

.section-tight { padding: 96px 0; }

/* ---------- Background ---------- */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-grid {
  position: absolute;
  inset: -10%;
  background-image:
    linear-gradient(to right, rgba(120, 165, 230, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 165, 230, 0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(ellipse 78% 62% at 50% 0%, #000 12%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 78% 62% at 50% 0%, #000 12%, transparent 78%);
}

.bg-aurora {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.5;
}

.a1 {
  width: 720px; height: 720px;
  top: -280px; left: -180px;
  background: radial-gradient(circle, rgba(31, 125, 208, 0.55), transparent 68%);
}
.a2 {
  width: 640px; height: 640px;
  top: -180px; right: -140px;
  background: radial-gradient(circle, rgba(80, 210, 255, 0.28), transparent 68%);
}
.a3 {
  width: 560px; height: 560px;
  bottom: 6%; left: 38%;
  background: radial-gradient(circle, rgba(143, 194, 48, 0.13), transparent 70%);
  opacity: 0.45;
}

.bg-noise {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  z-index: 120;
  background: linear-gradient(90deg, #1f7dd0, #6fdcff 55%, #9be05a);
  box-shadow: 0 0 14px rgba(76, 200, 255, 0.75);
  pointer-events: none;
}

/* ---------- 鼠标光晕 ---------- */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 560px;
  height: 560px;
  margin: -280px 0 0 -280px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  background: radial-gradient(circle, rgba(56, 172, 255, 0.09), transparent 62%);
  transition: opacity 0.5s var(--ease);
  will-change: transform;
}

.cursor-glow.on { opacity: 1; }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease),
    backdrop-filter 0.4s var(--ease), padding 0.4s var(--ease);
  border-bottom: 1px solid transparent;
  padding: 14px 0;
}

.nav.scrolled {
  background: rgba(5, 9, 15, 0.78);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
  padding: 8px 0;
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-mark {
  width: 46px;
  height: auto;
  filter: drop-shadow(0 4px 14px rgba(56, 172, 255, 0.35));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-text strong {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #f2f7ff;
}

.brand-text em {
  font-style: normal;
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--txt-mute);
  margin-top: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-links a {
  position: relative;
  padding: 9px 16px;
  font-size: 14.5px;
  color: var(--txt-dim);
  border-radius: 999px;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
  transform: translateX(-50%);
  transition: width 0.3s var(--ease);
}

.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.04); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 16px; }
.nav-links a.active { color: #fff; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    background 0.3s var(--ease), border-color 0.3s var(--ease);
}

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

.btn-sm { padding: 10px 20px; font-size: 14px; }

.btn-primary {
  position: relative;
  color: #04121f;
  background: var(--grad-brand);
  box-shadow: 0 10px 30px -10px rgba(56, 172, 255, 0.65),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 38px -12px rgba(56, 172, 255, 0.8),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.btn-ghost {
  color: var(--txt);
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  border-color: rgba(76, 200, 255, 0.55);
  background: rgba(76, 200, 255, 0.08);
  transform: translateY(-2px);
}

.btn-block { width: 100%; margin-top: 4px; }

/* ---------- Reveal ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
  transition-delay: calc(var(--d, 0) * 90ms);
  will-change: opacity, transform;
}

.js .reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 150px 0 70px;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.9;
  -webkit-mask-image: radial-gradient(ellipse 58% 62% at 70% 46%, #000 22%, transparent 76%);
  mask-image: radial-gradient(ellipse 58% 62% at 70% 46%, #000 22%, transparent 76%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 48px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 16px 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(76, 200, 255, 0.22);
  background: rgba(76, 200, 255, 0.06);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: #a9d8f2;
  margin-bottom: 30px;
}

.pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(155, 224, 90, 0.14);
  animation: pulse 2.6s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(155, 224, 90, 0.18); }
  50% { box-shadow: 0 0 0 7px rgba(155, 224, 90, 0.02); }
}

.hero h1 {
  font-size: clamp(2.5rem, 5.1vw, 4.35rem);
  line-height: 1.13;
  letter-spacing: -0.035em;
  font-weight: 800;
  margin-bottom: 26px;
}

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

.hero-sub {
  max-width: 540px;
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--txt-dim);
}

.hero-sub b {
  color: #dbe9ff;
  font-weight: 600;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 58px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.stat .num {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-size: 27px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #fff;
  line-height: 1.1;
}

.stat .num i {
  font-family: var(--mono);
  font-style: normal;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
}

.stat .num em {
  font-style: normal;
  font-size: 15px;
  font-weight: 600;
  color: var(--brand-2);
  margin-left: 1px;
}

.stat p {
  margin-top: 7px;
  font-size: 12.5px;
  color: var(--txt-mute);
  letter-spacing: 0.03em;
}

/* Hero visual */
.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 540px;
  margin-left: auto;
  width: 100%;
}

.orbit-wrap {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(120, 180, 255, 0.12);
}

.ring-1 { width: 100%; height: 100%; }
.ring-2 { width: 76%; height: 76%; border-color: rgba(120, 180, 255, 0.16); }
.ring-3 { width: 52%; height: 52%; border-color: rgba(76, 200, 255, 0.2); }

.ring-spin {
  position: absolute;
  width: 88%;
  height: 88%;
  border-radius: 50%;
  border: 1px dashed rgba(120, 180, 255, 0.18);
  animation: spin 42s linear infinite;
}

.ring-spin::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-3);
  box-shadow: 0 0 14px 3px rgba(127, 232, 255, 0.6);
}

/* 雷达刻度环 */
.ring-ticks {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: repeating-conic-gradient(
    from 0deg,
    rgba(127, 232, 255, 0.5) 0deg 0.45deg,
    transparent 0.45deg 6deg
  );
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 12px), #000 calc(100% - 11px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 12px), #000 calc(100% - 11px));
  opacity: 0.26;
  animation: spin 160s linear infinite;
}

/* 扫描弧 */
.orbit-sweep {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    transparent 0deg 296deg,
    rgba(76, 200, 255, 0.16) 326deg,
    rgba(127, 232, 255, 1) 354deg,
    rgba(255, 255, 255, 0.95) 359deg,
    transparent 360deg
  );
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 5px), #000 calc(100% - 3px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 5px), #000 calc(100% - 3px));
  animation: spin 9s linear infinite;
}

/* 扫描弧的头点 */
.orbit-sweep::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 7px;
  height: 7px;
  margin: -3px 0 0 -3px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 12px 3px rgba(127, 232, 255, 0.9), 0 0 26px 8px rgba(56, 172, 255, 0.45);
}

.orbit-sweep.s2 {
  width: 76%;
  height: 76%;
  opacity: 0.6;
  animation: spin 14s linear infinite reverse;
}

.orbit-sweep.s2::after {
  width: 5px;
  height: 5px;
  margin: -2px 0 0 -2px;
}

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

.orbit-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(155, 224, 90, 0.9);
  box-shadow: 0 0 18px 4px rgba(155, 224, 90, 0.35);
}

.d1 { top: 12%; right: 16%; }
.d2 { bottom: 16%; left: 10%; width: 7px; height: 7px; background: var(--brand-2); box-shadow: 0 0 16px 4px rgba(76, 200, 255, 0.45); }

.core {
  position: relative;
  width: 39%;
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 32% 28%, rgba(76, 200, 255, 0.18), rgba(4, 10, 20, 0.9) 62%);
  border: 1px solid rgba(140, 210, 255, 0.28);
  box-shadow: inset 0 0 40px rgba(56, 172, 255, 0.16),
    0 30px 80px -30px rgba(56, 172, 255, 0.55);
  backdrop-filter: blur(6px);
}

.core-inner {
  width: 62%;
}

.core::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    transparent 0deg 62%,
    rgba(127, 232, 255, 0.5) 82%,
    rgba(155, 224, 90, 0.35) 92%,
    transparent 100%
  );
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 1px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 1px));
  animation: spin 18s linear infinite;
  pointer-events: none;
}

.core-glow {
  position: absolute;
  inset: -16%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(76, 200, 255, 0.24), transparent 62%);
  filter: blur(22px);
  z-index: -1;
  animation: breathe 7s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { opacity: 0.6; transform: scale(0.96); }
  50% { opacity: 1; transform: scale(1.04); }
}

.float-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 16px 10px 11px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: #d7e6fb;
  background: rgba(11, 22, 38, 0.82);
  border: 1px solid rgba(132, 173, 235, 0.2);
  backdrop-filter: blur(14px);
  box-shadow: 0 16px 40px -20px rgba(0, 0, 0, 0.9);
  animation: floaty 6s ease-in-out infinite;
}

.chip-ico {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(76, 200, 255, 0.12);
  color: var(--brand-3);
}

.chip-ico svg { width: 15px; height: 15px; }

.chip-1 { top: 8%; left: 2%; }
.chip-2 { bottom: 20%; right: -2%; animation-delay: -2s; }
.chip-3 { bottom: 8%; left: 8%; animation-delay: -4s; }

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

.status-pill {
  position: absolute;
  top: 24%;
  right: 4%;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--txt-mute);
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(8, 16, 28, 0.7);
  backdrop-filter: blur(10px);
}

.status-pill span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 8px 2px rgba(155, 224, 90, 0.5);
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--txt-mute);
  font-size: 9px;
  letter-spacing: 0.4em;
}

.hero-scroll i {
  width: 1px;
  height: 42px;
  background: linear-gradient(to bottom, rgba(120, 180, 255, 0.6), transparent);
  position: relative;
  overflow: hidden;
}

.hero-scroll i::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 14px;
  background: var(--brand-3);
  animation: scrollLine 2.4s var(--ease) infinite;
}

@keyframes scrollLine {
  0% { transform: translateY(-16px); opacity: 0; }
  40% { opacity: 1; }
  100% { transform: translateY(44px); opacity: 0; }
}

/* ---------- Tech strip ---------- */
.tech-strip {
  position: relative;
  z-index: 1;
  padding: 34px 0 46px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.018), transparent);
}

.strip-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--txt-mute);
  margin-bottom: 24px;
  text-transform: uppercase;
}

.marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 14px;
  width: max-content;
  animation: marquee 38s linear infinite;
}

.marquee-track span {
  padding: 9px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: #b8c9e2;
  white-space: nowrap;
  background: rgba(255, 255, 255, 0.02);
}

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

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

/* ---------- Section head ---------- */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 60px;
  margin-bottom: 58px;
}

.section-head.center {
  display: block;
  text-align: center;
  margin-bottom: 62px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--brand-2);
  margin-bottom: 18px;
  text-transform: uppercase;
  font-weight: 500;
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}

.eyebrow::after {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.7;
  box-shadow: 0 0 8px rgba(76, 200, 255, 0.8);
}

.section-head h2,
.edge-left h2,
.about-copy h2,
.contact-info h2 {
  font-size: clamp(1.85rem, 3.2vw, 2.85rem);
  letter-spacing: -0.035em;
  line-height: 1.25;
}

.section-desc {
  max-width: 400px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--txt-dim);
  padding-bottom: 6px;
}

/* ---------- Cards / Services ---------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.015) 60%);
  padding: 30px 28px 26px;
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease),
    box-shadow 0.45s var(--ease), background 0.45s var(--ease);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.45s var(--ease);
  background: radial-gradient(
    340px circle at var(--mx, 50%) var(--my, 0%),
    rgba(76, 200, 255, 0.13),
    transparent 68%
  );
  pointer-events: none;
}

.card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(127, 232, 255, 0), rgba(127, 232, 255, 0.75), rgba(155, 224, 90, 0.5));
  box-shadow: 0 0 12px rgba(76, 200, 255, 0.55);
  transition: width 0.6s var(--ease);
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(76, 200, 255, 0.35);
  box-shadow: 0 30px 60px -36px rgba(16, 110, 190, 0.75);
}

.card:hover::before { opacity: 1; }
.card:hover::after { width: 100%; }

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
}

.s-ico {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  color: var(--brand-3);
  background: linear-gradient(150deg, rgba(76, 200, 255, 0.16), rgba(31, 125, 208, 0.08));
  border: 1px solid rgba(76, 200, 255, 0.2);
}

.s-ico svg { width: 23px; height: 23px; }

.s-index {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: rgba(157, 176, 205, 0.45);
}

.card h3 {
  font-size: 19.5px;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.card p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--txt-dim);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid rgba(132, 173, 235, 0.1);
}

.tags li {
  font-size: 11.5px;
  padding: 4px 11px;
  border-radius: 999px;
  color: #9fb6d6;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(132, 173, 235, 0.1);
}

/* ---------- Edge ---------- */
.edge-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  align-items: start;
}

.edge-left { position: sticky; top: 120px; }

.edge-left h2 { margin-bottom: 22px; }

.edge-left .section-desc {
  max-width: 380px;
  padding-bottom: 0;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 30px;
  font-size: 14.5px;
  color: var(--brand-3);
  letter-spacing: 0.02em;
}

.link-arrow svg {
  width: 17px;
  transition: transform 0.35s var(--ease);
}

.link-arrow:hover svg { transform: translateX(6px); }

.edge-right {
  display: grid;
  gap: 14px;
}

.edge-item {
  display: flex;
  gap: 22px;
  padding: 26px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.022);
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease),
    transform 0.4s var(--ease);
}

.edge-item:hover {
  background: rgba(76, 200, 255, 0.055);
  border-color: rgba(76, 200, 255, 0.28);
  transform: translateX(4px);
}

.e-num {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-3);
  background: rgba(76, 200, 255, 0.09);
  border: 1px solid rgba(76, 200, 255, 0.16);
}

.edge-item h4 {
  font-size: 16.5px;
  margin-bottom: 8px;
  font-weight: 600;
  letter-spacing: 0;
}

.edge-item p {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--txt-dim);
}

/* ---------- Process ---------- */
.process-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.step {
  position: relative;
  padding: 28px 26px 30px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.008));
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease),
    transform 0.4s var(--ease);
}

.step:hover {
  border-color: rgba(76, 200, 255, 0.3);
  background: linear-gradient(170deg, rgba(76, 200, 255, 0.07), rgba(255, 255, 255, 0.01));
  transform: translateY(-4px);
}

.step-num {
  display: block;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--brand-2);
  margin-bottom: 32px;
  font-weight: 600;
}

.step h4 {
  font-size: 17px;
  margin-bottom: 9px;
  font-weight: 600;
  letter-spacing: 0;
}

.step p {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--txt-dim);
}

.step::after {
  content: "";
  position: absolute;
  top: 34px;
  right: 24px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(76, 200, 255, 0.35);
}

/* ---------- Cases ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case {
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.022);
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease),
    box-shadow 0.45s var(--ease);
}

.case:hover {
  transform: translateY(-6px);
  border-color: rgba(76, 200, 255, 0.32);
  box-shadow: 0 34px 70px -40px rgba(16, 110, 190, 0.8);
}

.case-art {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  display: grid;
  place-items: center;
}

.case-art::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at 50% 40%, #000, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000, transparent 78%);
}

.case-art::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 42%;
  background: linear-gradient(180deg, transparent, rgba(76, 200, 255, 0.11), transparent);
  animation: scanY 6.5s ease-in-out infinite;
  pointer-events: none;
}

@keyframes scanY {
  0% { transform: translateY(-110%); opacity: 0; }
  18% { opacity: 1; }
  82% { opacity: 1; }
  100% { transform: translateY(260%); opacity: 0; }
}

.art-1 { background: linear-gradient(150deg, #0b2748, #071527 62%, #0a1c30); }
.art-2 { background: linear-gradient(150deg, #0d3029, #071a24 60%, #0a2130); }
.art-3 { background: linear-gradient(150deg, #231c46, #0d1226 60%, #0b1a2e); }

.art-ui {
  position: relative;
  width: 72%;
  padding: 16px;
  border-radius: 12px;
  background: rgba(9, 18, 32, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 22px 50px -24px rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(6px);
  transition: transform 0.6s var(--ease);
}

.case:hover .art-ui { transform: translateY(-4px) scale(1.02); }

.art-bar {
  height: 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  margin-bottom: 8px;
  overflow: hidden;
}

.art-bar i {
  display: block;
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, #2b8fe6, #6fdcff);
  opacity: 0.85;
}

.art-chart {
  display: flex;
  align-items: flex-end;
  gap: 7px;
  height: 68px;
  margin-top: 14px;
}

.art-chart span {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(180deg, rgba(111, 220, 255, 0.9), rgba(43, 143, 230, 0.18));
}

.art-chart span:nth-child(1) { height: 34%; }
.art-chart span:nth-child(2) { height: 56%; }
.art-chart span:nth-child(3) { height: 43%; }
.art-chart span:nth-child(4) { height: 78%; }
.art-chart span:nth-child(5) { height: 62%; }
.art-chart span:nth-child(6) { height: 94%; }

.art-phone {
  width: 30%;
  padding: 10px;
  border-radius: 16px;
  aspect-ratio: 9 / 16;
  align-self: center;
}

.ph-head {
  height: 16px;
  border-radius: 8px;
  background: linear-gradient(90deg, rgba(155, 224, 90, 0.55), rgba(76, 200, 255, 0.35));
  margin-bottom: 10px;
}

.ph-card {
  height: 46px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.09);
  margin-bottom: 9px;
}

.ph-row { display: flex; gap: 6px; }
.ph-row i {
  flex: 1;
  height: 30px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.art-shots { display: flex; gap: 8px; width: 78%; align-items: center; }

.shot {
  position: relative;
  flex: 1;
  aspect-ratio: 3 / 4;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.015));
  overflow: hidden;
}

.shot::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 20%;
  transform: translateX(-50%);
  width: 58%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 34% 28%, rgba(127, 232, 255, 0.55), rgba(31, 125, 208, 0.22) 55%, transparent 72%);
}

.shot::after {
  content: "";
  position: absolute;
  left: 20%;
  right: 20%;
  bottom: 22%;
  height: 1px;
  background: rgba(255, 255, 255, 0.3);
  box-shadow: 0 6px 0 rgba(255, 255, 255, 0.14), 0 12px 0 rgba(255, 255, 255, 0.07);
}

.shot:nth-child(2) {
  transform: translateY(-8px);
  background: linear-gradient(170deg, rgba(155, 224, 90, 0.18), rgba(76, 200, 255, 0.05));
  border-color: rgba(155, 224, 90, 0.28);
}

.shot:nth-child(2)::before {
  background: radial-gradient(circle at 34% 28%, rgba(196, 245, 130, 0.5), rgba(60, 160, 90, 0.16) 55%, transparent 72%);
}

.case-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #cfe4ff;
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(4, 10, 20, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
}

.case-body { padding: 24px 26px 26px; }

.case-body h3 {
  font-size: 17px;
  line-height: 1.5;
  margin-bottom: 10px;
  font-weight: 600;
  letter-spacing: 0;
}

.case-body p {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--txt-dim);
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 11.5px;
  color: var(--txt-mute);
}

.case-meta span {
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
}

.case-meta b {
  margin-left: auto;
  color: var(--lime);
  font-weight: 600;
  font-size: 12.5px;
}

/* ---------- Industries ---------- */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.ind {
  position: relative;
  padding: 28px 26px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.018);
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease),
    transform 0.4s var(--ease);
  overflow: hidden;
}

.ind span {
  position: absolute;
  top: 18px;
  right: 22px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(157, 176, 205, 0.35);
}

.ind h4 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0;
  margin-bottom: 6px;
}

.ind p {
  font-size: 13px;
  color: var(--txt-mute);
}

.ind:hover {
  background: rgba(76, 200, 255, 0.05);
  border-color: rgba(76, 200, 255, 0.26);
  transform: translateY(-3px);
}

/* ---------- About ---------- */
.about-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 72px;
  align-items: center;
}

.about-brand {
  display: grid;
  place-items: center;
  padding: 56px 30px;
  border-radius: 26px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 30%, rgba(56, 172, 255, 0.14), transparent 62%),
    linear-gradient(170deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.01));
  position: relative;
  overflow: hidden;
}

.about-brand::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(120, 165, 230, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 165, 230, 0.07) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 50%, #000, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000, transparent 72%);
}

.about-logo { position: relative; width: 62%; max-width: 220px; }

.about-brand::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px dashed rgba(127, 232, 255, 0.16);
  border-radius: 14px;
  pointer-events: none;
}

.about-logo img {
  filter: drop-shadow(0 18px 40px rgba(4, 30, 60, 0.85));
}

.about-note {
  position: relative;
  margin-top: 34px;
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--txt-mute);
}

.about-copy h2 { margin-bottom: 24px; }

.about-copy p {
  font-size: 14.5px;
  line-height: 2.05;
  color: var(--txt-dim);
  margin-bottom: 16px;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.about-values div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.about-values b {
  font-size: 16px;
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.about-values span {
  font-size: 12.5px;
  color: var(--txt-mute);
  line-height: 1.6;
}

/* ---------- CTA ---------- */
.cta-section { padding-top: 40px; }

.cta-box {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  padding: 70px 60px;
  border: 1px solid rgba(76, 200, 255, 0.22);
  background:
    radial-gradient(ellipse 70% 120% at 12% 0%, rgba(31, 125, 208, 0.3), transparent 62%),
    radial-gradient(ellipse 60% 120% at 92% 100%, rgba(155, 224, 90, 0.12), transparent 60%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.012));
  text-align: center;
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(120, 165, 230, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120, 165, 230, 0.08) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse at 50% 50%, #000, transparent 76%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, #000, transparent 76%);
}

.cta-glow {
  position: absolute;
  width: 520px;
  height: 520px;
  top: -260px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(76, 200, 255, 0.22), transparent 66%);
  filter: blur(60px);
}

.cta-box::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 18px;
  border: 1px solid rgba(127, 232, 255, 0.1);
  pointer-events: none;
}

.cta-content { position: relative; z-index: 2; }

.cta-content h2 {
  font-size: clamp(1.7rem, 3.1vw, 2.6rem);
  line-height: 1.35;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.cta-content > p:not(.eyebrow) {
  font-size: 14.5px;
  color: var(--txt-dim);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 34px;
}

/* ---------- Contact ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: start;
}

.contact-info h2 { margin-bottom: 20px; }
.contact-info .section-desc { max-width: 420px; padding-bottom: 0; }

.contact-list {
  display: grid;
  gap: 10px;
  margin-top: 38px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease),
    transform 0.35s var(--ease);
}

a.contact-item:hover {
  background: rgba(76, 200, 255, 0.05);
  border-color: rgba(76, 200, 255, 0.2);
  transform: translateX(4px);
}

.c-ico {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  flex-shrink: 0;
  color: var(--brand-3);
  background: rgba(76, 200, 255, 0.08);
  border: 1px solid rgba(76, 200, 255, 0.14);
}

.c-ico svg { width: 19px; height: 19px; }

.c-txt { display: flex; flex-direction: column; gap: 3px; }

.c-txt em {
  font-style: normal;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--txt-mute);
}

.c-txt b {
  font-size: 15px;
  font-weight: 500;
  color: #e2ecfb;
  letter-spacing: 0.01em;
}

.contact-form-wrap {
  position: relative;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.012));
  padding: 34px;
  box-shadow: 0 40px 90px -60px rgba(0, 0, 0, 0.9);
}

.form-head { margin-bottom: 24px; }

.form-head h3 {
  font-size: 20px;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.form-head p {
  font-size: 12.5px;
  color: var(--txt-mute);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.field > span {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--txt-mute);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(132, 173, 235, 0.16);
  background: rgba(4, 10, 20, 0.5);
  color: var(--txt);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
  outline: none;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease),
    background 0.3s var(--ease);
  appearance: none;
}

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' stroke='%236b7f9f' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 34px;
  cursor: pointer;
}

.field textarea { resize: vertical; min-height: 96px; }

.field input::placeholder,
.field textarea::placeholder { color: rgba(107, 127, 159, 0.7); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(76, 200, 255, 0.5);
  background: rgba(9, 20, 35, 0.8);
  box-shadow: 0 0 0 3px rgba(76, 200, 255, 0.09);
}

.field select option { background: #0a1422; color: var(--txt); }

.form-tip {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--lime);
  min-height: 18px;
  text-align: center;
}

.form-tip.err { color: #ff8a8a; }

/* ---------- Footer ---------- */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  padding: 66px 0 32px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), rgba(0, 0, 0, 0.25));
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 60px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line);
}

.footer-brand .footer-logo { width: 128px; margin-bottom: 18px; opacity: 0.95; }

.footer-brand p {
  font-size: 13px;
  line-height: 1.9;
  color: var(--txt-mute);
  max-width: 300px;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.footer-col { display: flex; flex-direction: column; gap: 11px; }

.footer-col h5 {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: #c3d3ea;
  margin-bottom: 6px;
  font-weight: 600;
}

.footer-col a {
  font-size: 13px;
  color: var(--txt-mute);
  transition: color 0.25s var(--ease);
  width: fit-content;
}

.footer-col a:hover { color: var(--brand-3); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 26px;
  font-size: 12.5px;
  color: var(--txt-mute);
}

.beian a {
  color: var(--txt-mute);
  transition: color 0.25s var(--ease);
}

.beian a:hover { color: var(--brand-3); }

/* ---------- To top ---------- */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 90;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(10, 20, 34, 0.8);
  backdrop-filter: blur(10px);
  color: var(--txt-dim);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease),
    color 0.35s var(--ease), border-color 0.35s var(--ease);
}

.to-top svg { width: 18px; height: 18px; }

.to-top.show { opacity: 1; pointer-events: auto; transform: none; }

.to-top:hover {
  color: #fff;
  border-color: rgba(76, 200, 255, 0.5);
}

/* ---------- 悬浮扫码 ---------- */
.qr-dock {
  position: fixed;
  right: 20px;
  bottom: 96px;
  z-index: 95;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.qr-item { position: relative; }

.qr-btn {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  background: rgba(10, 20, 34, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: #cfe2fb;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease),
    background 0.3s var(--ease), transform 0.3s var(--ease),
    box-shadow 0.3s var(--ease);
}

.qr-btn svg { width: 21px; height: 21px; }

.qr-btn:hover {
  color: #fff;
  border-color: rgba(76, 200, 255, 0.55);
  background: rgba(76, 200, 255, 0.14);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -16px rgba(56, 172, 255, 0.8);
}

.qr-pop {
  position: absolute;
  right: 60px;
  top: 50%;
  width: 184px;
  padding: 11px 11px 13px;
  border-radius: 16px;
  background: rgba(9, 17, 29, 0.97);
  border: 1px solid rgba(132, 173, 235, 0.24);
  box-shadow: 0 26px 60px -24px rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  transform: translate(10px, -50%);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease),
    visibility 0.35s var(--ease);
  pointer-events: none;
}

.qr-item:hover .qr-pop,
.qr-item:focus-within .qr-pop {
  opacity: 1;
  visibility: visible;
  transform: translate(0, -50%);
}

.qr-pop img {
  width: 100%;
  border-radius: 9px;
  background: #fff;
  padding: 5px;
}

.qr-pop p {
  margin-top: 10px;
  font-size: 13px;
  font-weight: 600;
  color: #e6effe;
  text-align: center;
}

.qr-pop em {
  display: block;
  margin-top: 3px;
  font-style: normal;
  font-size: 10.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--txt-mute);
  text-align: center;
}

.qr-dock-label {
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--txt-mute);
  white-space: nowrap;
  padding-top: 2px;
}

/* 移动端单按钮 */
.qr-fab { display: none; }

/* 联系区二维码卡片 */
.contact-qr {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 8px;
}

.qr-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
  text-align: left;
  transition: border-color 0.35s var(--ease), background 0.35s var(--ease),
    transform 0.35s var(--ease);
}

.qr-card img {
  width: 58px;
  height: 58px;
  flex-shrink: 0;
  border-radius: 8px;
  background: #fff;
  padding: 3px;
}

.qr-card span { display: flex; flex-direction: column; gap: 3px; }

.qr-card em {
  font-style: normal;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--txt-mute);
}

.qr-card b {
  font-size: 13.5px;
  font-weight: 600;
  color: #e3edfb;
}

.qr-card:hover {
  border-color: rgba(76, 200, 255, 0.35);
  background: rgba(76, 200, 255, 0.06);
  transform: translateY(-2px);
}

/* 扫码弹层 */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease), visibility 0.35s var(--ease);
}

.qr-modal.open { opacity: 1; visibility: visible; }

.qr-modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(3, 7, 13, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.qr-modal-card {
  position: relative;
  width: 340px;
  max-width: 100%;
  padding: 28px 26px 24px;
  border-radius: 24px;
  border: 1px solid rgba(132, 173, 235, 0.24);
  background:
    radial-gradient(circle at 50% 0%, rgba(56, 172, 255, 0.14), transparent 62%),
    linear-gradient(165deg, rgba(17, 29, 47, 0.99), rgba(8, 15, 26, 0.99));
  box-shadow: 0 40px 100px -40px rgba(0, 0, 0, 0.95);
  text-align: center;
  transform: translateY(14px) scale(0.97);
  transition: transform 0.4s var(--ease);
}

.qr-modal.open .qr-modal-card { transform: none; }

.qr-modal-close {
  position: absolute;
  top: 13px;
  right: 13px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--txt-dim);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease),
    background 0.3s var(--ease);
}

.qr-modal-close svg { width: 15px; height: 15px; }

.qr-modal-close:hover {
  color: #fff;
  border-color: rgba(76, 200, 255, 0.5);
  background: rgba(76, 200, 255, 0.1);
}

.qr-modal-card .eyebrow { margin-bottom: 10px; }

.qr-modal-card h3 {
  font-size: 19px;
  margin-bottom: 18px;
  letter-spacing: 0.01em;
}

.qr-modal-stage {
  width: 214px;
  margin: 0 auto 16px;
  padding: 10px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.9);
}

.qr-modal-stage img { width: 100%; border-radius: 6px; }

.qr-modal-hint {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--txt-dim);
}

.qr-modal-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.qr-modal-tabs button {
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 12.5px;
  border: 1px solid var(--line);
  color: var(--txt-dim);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease),
    background 0.3s var(--ease);
}

.qr-modal-tabs button:hover { color: #fff; }

.qr-modal-tabs button.active {
  background: rgba(76, 200, 255, 0.12);
  border-color: rgba(76, 200, 255, 0.42);
  color: #dff2ff;
}

body.modal-open { overflow: hidden; }

/* ---------- Menu button ---------- */
.menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  place-items: center;
  gap: 5px;
  flex-direction: column;
}

.menu-btn span {
  display: block;
  width: 17px;
  height: 1.6px;
  background: #d7e6fb;
  border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.3s var(--ease);
}

body.menu-open .menu-btn span:first-child { transform: translateY(3.3px) rotate(45deg); }
body.menu-open .menu-btn span:last-child { transform: translateY(-3.3px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(5, 9, 15, 0.97);
  backdrop-filter: blur(20px);
  padding: 108px 30px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease),
    visibility 0.4s var(--ease);
}

body.menu-open .mobile-menu { opacity: 1; visibility: visible; transform: none; }
body.menu-open { overflow: hidden; }

.mobile-menu nav { display: flex; flex-direction: column; }

.mobile-menu nav a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 18px 0;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--line);
}

.mobile-menu nav a span {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--txt-mute);
  font-weight: 400;
  text-transform: uppercase;
}

.mobile-menu-foot p { font-size: 12px; color: var(--txt-mute); margin-bottom: 6px; }
.mobile-menu-foot a { font-size: 16px; color: var(--brand-3); }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .section { padding: 92px 0; }
  .hero { padding-top: 132px; min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; gap: 60px; }
  .hero-visual { max-width: 440px; margin: 0 auto; order: 2; }
  .hero-copy { order: 1; }
  .hero-scroll { display: none; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 24px; }
  .section-desc { max-width: 100%; }
  .edge-layout { grid-template-columns: 1fr; gap: 48px; }
  .edge-left { position: static; }
  .about-layout { grid-template-columns: 1fr; gap: 46px; }
  .about-brand { padding: 44px 24px; }
  .contact-layout { grid-template-columns: 1fr; gap: 44px; }
  .service-grid, .process-grid, .case-grid, .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
  .menu-btn { display: flex; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 720px) {
  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; }
  .section { padding: 72px 0; }
  .section-tight { padding: 64px 0; }
  .hero { padding-top: 118px; }
  .hero h1 { font-size: clamp(2.1rem, 9vw, 2.8rem); }
  .hero-sub { font-size: 15px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px 12px; margin-top: 42px; }
  .hero-visual { max-width: 340px; }
  .float-chip { font-size: 11.5px; padding: 8px 12px 8px 9px; }
  .chip-1 { left: 0; top: 5%; }
  .chip-2 { right: 0; bottom: 18%; }
  .chip-3 { left: 2%; bottom: 6%; }
  .status-pill { display: none; }
  .service-grid, .process-grid, .case-grid, .industry-grid { grid-template-columns: 1fr; }
  .card { padding: 26px 22px 22px; }
  .hero-cta .btn { flex: 1; padding: 13px 18px; }
  .cta-box { padding: 48px 24px; border-radius: 22px; }
  .cta-actions .btn { width: 100%; }
  .contact-form-wrap { padding: 24px 20px; }
  .field-row { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .about-values { grid-template-columns: 1fr; gap: 16px; }
  .to-top { right: 16px; bottom: 16px; width: 40px; height: 40px; }
  .nav-actions .btn-sm { display: none; }
  .qr-dock { right: 14px; bottom: 72px; gap: 8px; }
  .qr-btn { width: 44px; height: 44px; border-radius: 12px; }
  .qr-btn svg { width: 19px; height: 19px; }
  .qr-item { display: none; }
  .qr-pop { display: none; }
  .qr-dock-label { display: none; }
  .qr-fab {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1px;
    width: 52px;
    height: 52px;
    border-radius: 16px;
    border: 1px solid rgba(76, 200, 255, 0.4);
    background: linear-gradient(160deg, rgba(31, 125, 208, 0.92), rgba(10, 25, 45, 0.96));
    color: #eef7ff;
    box-shadow: 0 14px 30px -14px rgba(56, 172, 255, 0.85);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }
  .qr-fab svg { width: 20px; height: 20px; }
  .qr-fab span { font-size: 9px; letter-spacing: 0.06em; opacity: 0.85; }
  .qr-card { padding: 10px; gap: 9px; }
  .qr-card img { width: 50px; height: 50px; }
  .qr-modal-card { padding: 26px 20px 22px; }
  .qr-modal-stage { width: 190px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}