/* 基础设定 */
:root {
  --bg: #060a12;
  --bg-soft: #0b1220;
  --text: #eaf2ff;
  --muted: #bcd1ff;
  --primary: #0b6cff; /* 晶莹蓝基色 */
  --primary-2: #4aa8ff;
  --glass: rgba(255, 255, 255, 0.08);
  --glass-2: rgba(255, 255, 255, 0.14);
  --border: rgba(255, 255, 255, 0.14);
  --shadow: 0 10px 30px rgba(11, 108, 255, 0.18);
  --radius: 16px;
  --radius-sm: 12px;
  --container: 1200px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 800px at 70% -10%, rgba(11,108,255,0.25), transparent 60%),
              radial-gradient(900px 600px at -10% 20%, rgba(74,168,255,0.15), transparent 60%),
              var(--bg);
  line-height: 1.6;
}

a { color: var(--text); text-decoration: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* 导航 */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  background: linear-gradient(180deg, rgba(6,10,18,0.85), rgba(6,10,18,0.55));
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; }
.brand-logo { width: 36px; height: 36px; border-radius: 10px; display: block; object-fit: contain; background: rgba(255,255,255,0.02); }
.brand-logo.small { width: 28px; height: 28px; }
.brand-text { letter-spacing: 0.4px; }

.nav-links { display: flex; gap: 18px; }
.nav-links a { color: var(--muted); font-weight: 500; }
.nav-links a:hover { color: #fff; }

.nav-toggle { display: none; width: 40px; height: 40px; background: transparent; border: 0; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px auto; transition: 0.3s; }

/* Hero */
.section { padding: 80px 0; }
.hero { position: relative; padding: 120px 0 80px; overflow: hidden; }
.hero-bg { position: absolute; inset: -10% -10% 0 -10%; background:
  radial-gradient(700px 400px at 20% 20%, rgba(74,168,255,0.25), transparent 60%),
  radial-gradient(600px 300px at 80% 10%, rgba(11,108,255,0.35), transparent 60%);
  filter: blur(20px); opacity: 0.8; }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.site-title { margin: 0 0 10px; font-size: 32px; line-height: 1.3; }
.site-title .title-line-1 { display: block; }
.site-title .title-line-2 { display: block; font-size: 22px; line-height: 1.4; color: var(--muted); margin-top: 2px; }
.slogan { margin: 0 0 10px; font-size: 20px; color: var(--primary-2); font-weight: 600; }
.sub { margin: 0 0 24px; color: var(--muted); }

.cta-group { display: flex; gap: 12px; }
.btn { display: inline-flex; align-items: center; justify-content: center; height: 44px; padding: 0 18px; border-radius: 12px; border: 1px solid rgba(255,255,255,0.12); font-weight: 600; transition: 0.25s; }
.btn-primary { background: linear-gradient(135deg, var(--primary), #6bb8ff); color: #051022; box-shadow: var(--shadow); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 38px rgba(11,108,255,0.28); }
.btn-ghost { background: rgba(255,255,255,0.06); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.1); }

.hero-media { display: flex; justify-content: center; }
.glass {
  background: linear-gradient(180deg, rgba(255,255,255,0.09), rgba(255,255,255,0.05));
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.12);
}
.media-card { width: 100%; max-width: 520px; overflow: hidden; }
.media-header { display: flex; gap: 6px; padding: 12px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.media-header .dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.5); }
.media-body { padding: 16px; }
.media-body .nlq { color: #d9e7ff; font-weight: 600; margin-bottom: 10px; }
.media-body .sql { white-space: pre-wrap; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; font-size: 12px; color: #9cc0ff; background: rgba(11,108,255,0.08); padding: 10px; border-radius: 10px; border: 1px solid rgba(11,108,255,0.22); }
.chart.bars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 14px; height: 120px; align-items: end; }
.chart.bars span { display: block; height: var(--v); background: linear-gradient(180deg, #aee0ff, var(--primary)); border-radius: 8px; box-shadow: inset 0 -1px 0 rgba(255,255,255,0.25); }

/* 特性 */
.section-title { margin: 0; font-size: 28px; }
.section-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.section-contact { height: 40px; padding: 0 16px; }
.grid { display: grid; gap: 18px; }
.features-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { padding: 20px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }

/* 案例 */
.cases-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.case-item { padding: 20px; position: relative; }
.case-badge { position: absolute; top: 14px; right: 14px; font-size: 12px; color: #05224a; background: linear-gradient(135deg, #aee0ff, #6bb8ff); border-radius: 999px; padding: 6px 10px; font-weight: 700; }
.case-item h3 { margin: 8px 0 8px; }
.case-item p { margin: 0; color: var(--muted); }

/* 服务模式 */
.service-grid { display: grid; grid-template-columns: 1fr; gap: 18px; align-items: stretch; }
.service-steps { padding: 20px; }
.service-steps h3 { margin: 0 0 12px; font-size: 18px; }
.steps-cards { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 10px; align-items: center; }
.step-card { padding: 14px; border: 1px solid rgba(255,255,255,0.12); border-radius: 12px; background: rgba(255,255,255,0.04); display: grid; gap: 6px; justify-items: start; }
.step-icon { width: 28px; height: 28px; border-radius: 999px; display: grid; place-items: center; font-weight: 800; color: #05224a; background: linear-gradient(135deg, #aee0ff, #6bb8ff); box-shadow: 0 6px 18px rgba(11,108,255,0.26); }
.step-name { font-weight: 700; }
.step-sub { color: var(--muted); font-size: 14px; }
.step-arrow { color: var(--muted); font-size: 22px; opacity: 0.8; }
.service-experts { display: grid; grid-template-columns: 1fr; gap: 18px; }
.experts-section { display: grid; gap: 10px; }
.experts-title { margin: 0; font-size: 16px; color: #d9e7ff; font-weight: 700; }
.experts-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.expert-card { padding: 16px; display: grid; grid-template-columns: 96px 1fr; gap: 12px; align-items: center; }
.expert-photo { width: 96px; height: 96px; border-radius: 12px; overflow: hidden; border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.04); }
.expert-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.expert-role { font-weight: 700; margin-bottom: 4px; }
.expert-desc { color: var(--muted); font-size: 14px; }

@media (max-width: 900px) {
  .experts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .experts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .steps-cards { grid-template-columns: 1fr; }
  .step-arrow { display: none; }
}

/* 轮播 */
.gallery .section-title { margin-bottom: 14px; }
.carousel { position: relative; overflow: hidden; padding: 14px; }
.carousel .slides { display: flex; transition: transform .5s ease; will-change: transform; }
.carousel .slide { min-width: 100%; user-select: none; }
.shot { margin: 0; }
.shot-media { position: relative; width: 100%; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 12px; border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.02); }
.shot-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.shot-caption { margin-top: 10px; color: var(--muted); font-size: 14px; text-align: center; }
.carousel-btn { position: absolute; top: 50%; transform: translateY(-50%); width: 40px; height: 40px; border-radius: 999px; border: 1px solid rgba(255,255,255,0.14); background: rgba(6,10,18,0.6); color: #eaf2ff; cursor: pointer; display: grid; place-items: center; }
.carousel-btn:hover { background: rgba(6,10,18,0.8); }
.carousel-btn.prev { left: 14px; }
.carousel-btn.next { right: 14px; }
.dots { display: flex; justify-content: center; gap: 8px; padding: 10px 0 2px; }
.dots button { width: 8px; height: 8px; border-radius: 999px; border: 0; background: rgba(255,255,255,0.28); cursor: pointer; }
.dots button[aria-current="true"] { background: #aee0ff; box-shadow: 0 0 0 2px rgba(11,108,255,0.25); }

@media (max-width: 640px) {
  .shot-caption { font-size: 13px; }
}

/* 关于 */
.about-wrap { display: grid; grid-template-columns: 140px 1fr; gap: 18px; padding: 20px; align-items: center; }
.about-logo { width: 120px; height: 120px; display: grid; place-items: center; border-radius: 12px; color: var(--muted); }
.about-logo img { max-width: 100%; max-height: 100%; object-fit: contain; padding: 8px; display: block; }
.about-text p { margin: 0 0 8px; color: var(--muted); }

/* 联系 */
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 18px; justify-items: stretch; }
.qr-card { padding: 24px; display: grid; grid-template-columns: 240px 1fr; gap: 20px; align-items: center; }
.qr-image { width: 240px; height: 240px; display: grid; place-items: center; border-radius: 12px; border: 1.5px dashed var(--border); background: rgba(255,255,255,0.04); }
.qr-image img { max-width: 100%; max-height: 100%; border-radius: 8px; display: block; }
.qr-text h3 { margin: 0 0 6px; font-size: 18px; }
.qr-text p { margin: 0 0 6px; color: var(--muted); }
.qr-tip { font-size: 12px; }
.contact-link { margin-top: 4px; padding: 0 14px; height: 38px; }

/* 试用卡片 */
.trial-card { padding: 24px; display: grid; gap: 12px; align-content: start; }
.trial-card h3 { margin: 0; font-size: 18px; }
.trial-sub { margin: 0; color: var(--muted); }
.cred-list { display: grid; gap: 8px; margin: 4px 0 4px; }
.cred-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; border: 1px solid rgba(255,255,255,0.12); border-radius: 10px; background: rgba(255,255,255,0.04); }
.cred-label { color: #d9e7ff; font-weight: 600; font-size: 14px; }
.cred-value { color: #aee0ff; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; font-size: 13px; }
.trial-btn { width: fit-content; }
.trial-tip { margin: 0; color: var(--muted); font-size: 12px; }

/* 页脚 */
.site-footer { margin-top: 40px; border-top: 1px solid rgba(255,255,255,0.06); background: linear-gradient(180deg, rgba(6,10,18,0.7), rgba(6,10,18,0.9)); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 0; }
.footer-left { display: flex; align-items: center; gap: 10px; }
.footer-right { display: flex; gap: 14px; }
.footer-right a { color: var(--muted); }
.footer-right a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 12px 0; color: var(--muted); }
.footer-bottom .container { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.beian { display: flex; align-items: center; gap: 12px; }
.beian a { color: var(--muted); }
.beian a:hover { color: #fff; text-decoration: underline; }

/* 动画与过渡 */
[data-animate] { opacity: 0; transform: translateY(10px) scale(0.995); transition: opacity .6s ease, transform .6s ease; }
[data-animate].in-view { opacity: 1; transform: translateY(0) scale(1); }

/* 响应式 */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .qr-card { grid-template-columns: 1fr; }
  .qr-image { width: 220px; height: 220px; margin: 0 auto; }
}
@media (max-width: 840px) {
  .features-grid, .cases-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .site-title { font-size: 26px; }
  .site-title .title-line-2 { font-size: 18px; }
  .slogan { font-size: 18px; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-block; }
  .about-wrap { grid-template-columns: 1fr; }
  .features-grid, .cases-grid { grid-template-columns: 1fr; }
}

/* 联系：大屏两列并排 */
@media (min-width: 900px) {
  .contact-grid { grid-template-columns: 1fr 1fr; }
}