:root {
  --bg: #edf5ff;
  --panel: #ffffff;
  --text: #1b2333;
  --muted: #6b6f76;
  --line: #dfe8f7;
  --brand: #4f46e5;
  --brand-2: #4338ca;
  --radius: 16px;
  --shadow: 0 8px 32px rgba(10, 15, 30, 0.06);
  --maxw: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 620px at -8% -10%, #f4f9ff 0%, transparent 55%),
    radial-gradient(900px 560px at 110% 0%, #e6f2ff 0%, transparent 60%),
    var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--maxw), 92vw); margin: 0 auto; }
.section { padding: 72px 0; }
.tag { display: inline-block; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 13px; }
.section-title { margin: 12px 0 8px; font-size: clamp(26px, 3vw, 36px); line-height: 1.2; }
.section-desc { margin: 0 0 28px; color: var(--muted); }

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
  background: rgba(237, 245, 255, 0.78);
  border-bottom: 1px solid var(--line);
}
.nav {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { font-weight: 700; letter-spacing: 0.2px; }
.brand span { color: var(--brand); }
.menu {
  display: flex;
  gap: 20px;
  align-items: center;
}
.menu a {
  color: var(--muted);
  font-size: 14px;
  transition: color .2s ease;
}
.menu a:hover { color: var(--brand); }
.menu-btn {
  display: none;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 10px;
  width: 42px; height: 38px;
  cursor: pointer;
}

.hero { padding: 86px 0 40px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  align-items: stretch;
}
.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 252, 255, 0.95));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 32px rgba(73, 101, 155, 0.12);
  transition: transform .28s ease, box-shadow .28s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 38px rgba(73, 101, 155, 0.16);
}
.hero-main { padding: 36px; }
.hero-main h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.18;
}
.hero-main p { margin: 0 0 28px; color: var(--muted); }
.hero-side { padding: 26px; display: grid; gap: 14px; }
.hero-illustration {
  width: 100%;
  border: 1px solid #d7e3f8;
  border-radius: 14px;
  animation: floatY 6s ease-in-out infinite;
}
.kpi {
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #fff, #fafbff);
}
.kpi strong { display: block; font-size: 24px; margin-bottom: 2px; color: var(--brand); }
.kpi span { font-size: 13px; color: var(--muted); }

.btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 18px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: transform .15s ease, opacity .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-2); }
.hero-main .btn-primary {
  box-shadow: 0 8px 22px rgba(79, 70, 229, 0.35);
  animation: pulseGlow 3.2s ease-in-out infinite;
}
.btn-ghost {
  color: var(--text);
  border: 1px solid var(--line);
  background: #fff;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.service-card { padding: 22px; }
.service-card h3 { margin: 6px 0 8px; font-size: 20px; }
.service-card p { margin: 0 0 14px; color: var(--muted); font-size: 14px; }
.service-card a { color: var(--brand); font-weight: 600; font-size: 14px; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.case-card { padding: 22px; }
.case-card h4 { margin: 0 0 8px; font-size: 18px; }
.case-card p { margin: 0; color: var(--muted); }

.detail-wrap {
  display: grid;
  gap: 16px;
}
.item {
  padding: 22px;
  display: grid;
  gap: 10px;
}
.item-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  flex-wrap: wrap;
}
.item-head h3 { margin: 0; }
.price {
  color: var(--brand);
  font-size: 20px;
  font-weight: 700;
}
.meta {
  color: var(--muted);
  font-size: 14px;
}
ul.compact {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.ph {
  aspect-ratio: 4/3;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(79,70,229,.18), transparent 40%),
    linear-gradient(315deg, rgba(30,41,59,.12), transparent 50%),
    #f4f6fb;
  display: grid;
  place-items: center;
  color: #5b6475;
  font-size: 13px;
}

.test-box { padding: 24px; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  font: inherit;
  background: #fff;
}
.test-result {
  margin-top: 14px;
  border: 1px dashed #c7ccff;
  background: #f7f8ff;
  border-radius: 12px;
  padding: 14px;
  color: #3e4580;
  min-height: 84px;
}

.about-box { padding: 24px; }
.skills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.skills span {
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  background: #fff;
}

.footer {
  margin-top: 52px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.socials { display: flex; gap: 14px; }
.socials a { color: var(--brand); font-size: 14px; }

.notice {
  margin-top: 10px;
  font-size: 12px;
  color: #7f8694;
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.45);
  z-index: 1200;
}
.modal.show { display: flex; }
.modal-content {
  width: min(560px, 95vw);
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--line);
  padding: 24px;
}
.modal-content h3 { margin: 0 0 8px; }
.modal-content p { margin: 0 0 14px; color: var(--muted); }
.qr {
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  color: #626b7c;
  background: #fafbff;
  margin-bottom: 14px;
}

.qr-image {
  margin: 0 auto 8px;
  width: 180px;
  border: 1px solid #d5daea;
  border-radius: 8px;
}

[data-animate] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .65s ease, transform .65s ease;
}
[data-animate].in {
  opacity: 1;
  transform: translateY(0);
}

.bg-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(12px);
  z-index: -1;
  pointer-events: none;
}
.orb-1 {
  width: 260px;
  height: 260px;
  left: -60px;
  top: 160px;
  background: rgba(145, 182, 255, 0.24);
  animation: driftA 12s ease-in-out infinite;
}
.orb-2 {
  width: 220px;
  height: 220px;
  right: -50px;
  top: 420px;
  background: rgba(125, 205, 255, 0.22);
  animation: driftB 10s ease-in-out infinite;
}
.orb-3 {
  width: 170px;
  height: 170px;
  left: 24%;
  bottom: 60px;
  background: rgba(173, 203, 255, 0.26);
  animation: driftC 14s ease-in-out infinite;
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 8px 22px rgba(79, 70, 229, 0.35); }
  50% { box-shadow: 0 12px 28px rgba(79, 70, 229, 0.5); }
}

@keyframes driftA {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(22px, -18px); }
}
@keyframes driftB {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-18px, 14px); }
}
@keyframes driftC {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(14px, -14px); }
}

@media (max-width: 980px) {
  .services-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .menu-btn { display: inline-block; }
  .menu {
    position: absolute;
    left: 0; right: 0;
    top: 68px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 4vw 18px;
    border-bottom: 1px solid var(--line);
    background: rgba(251,252,253,0.98);
  }
  .menu.show { display: flex; }
  .form-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .section { padding: 58px 0; }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}