/* ============================================================
   九思云 9MES Cloud 产品官网 · 设计系统
   品牌色沿用参考站：主蓝 #1a21ff / 青 #61dff2 / 深藏青 #0e0066 #07003a
   ============================================================ */

:root {
  --brand: #1a21ff;
  --navy: #0e0066;
  --navy-deep: #07003a;
  --cyan: #61dff2;
  --ink: #101028;
  --bg-light: #f4f5fb;
  --radius: 16px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
::selection { background: var(--cyan); color: var(--navy); }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.num { font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

/* ---------- 图标 ---------- */
.icon { display: inline-flex; width: 24px; height: 24px; flex: none; }
.icon svg, .icon use { width: 100%; height: 100%; }
.icon svg { fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.icon.tiny { width: 13px; height: 13px; }
.icon.dim { color: rgba(16, 16, 40, 0.35); }
.icon-blue { color: var(--brand); }
.icon-cyan { color: var(--cyan); }

/* ---------- 通用排版 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.container-narrow { max-width: 800px; }
.center { text-align: center; }
.eyebrow {
  font-size: 12px; font-weight: 600; letter-spacing: 0.3em;
}
.eyebrow-blue { color: var(--brand); }
.eyebrow-cyan { color: var(--cyan); }
.h2 { font-size: clamp(26px, 4vw, 42px); font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; margin-top: 16px; }
.h3 { font-size: clamp(20px, 3vw, 26px); font-weight: 700; }
.ink { color: var(--ink); }
.white { color: #fff; }
.section-sub {
  max-width: 640px; margin: 16px auto 0;
  font-size: 15px; color: rgba(16, 16, 40, 0.6);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  border-radius: 999px; font-weight: 700; font-size: 14px;
  transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
  cursor: pointer; border: none;
}
.btn .icon { width: 16px; height: 16px; transition: transform .2s ease; }
.btn:hover .icon { transform: translateX(2px); }
.btn-lg { padding: 14px 30px; }
.btn-sm { padding: 8px 20px; font-size: 13px; }
.btn-white { background: #fff; color: var(--brand); }
.btn-white:hover { transform: scale(1.04); }
.btn-cyan { background: var(--cyan); color: var(--navy); }
.btn-cyan:hover { transform: scale(1.04); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.4); font-weight: 600; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.1); }

/* ---------- 背景装饰 ---------- */
.bg-grid-blue {
  background-image:
    linear-gradient(rgba(255,255,255,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 56px 56px;
}
.bg-grid-navy {
  background-image:
    linear-gradient(rgba(97,223,242,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(97,223,242,0.06) 1px, transparent 1px);
  background-size: 56px 56px;
}
.band-light { background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='56'%3E%3Cpath d='M56 0H0v56' fill='none' stroke='rgba(14,0,102,0.05)'/%3E%3C/svg%3E"); }
.band-light2 { background: var(--bg-light); }
.band-white { background: #fff; }
.band-navy { background: var(--navy-deep); position: relative; overflow: hidden; }
.section-bg { position: absolute; inset: 0; pointer-events: none; }
.glow-top {
  position: absolute; left: 50%; top: 0; width: 600px; height: 300px;
  transform: translateX(-50%); border-radius: 50%;
  background: rgba(26,33,255,0.25); filter: blur(140px); pointer-events: none;
}
.glow-bottom-right {
  position: absolute; right: 0; bottom: 0; width: 520px; height: 280px;
  border-radius: 50%; background: rgba(26,33,255,0.25); filter: blur(130px); pointer-events: none;
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed; inset-inline: 0; top: 0; z-index: 50;
  transition: background .3s ease, box-shadow .3s ease;
}
.nav.scrolled { background: rgba(7,0,58,0.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.nav-inner {
  max-width: 1200px; margin: 0 auto; height: 64px; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-logo { height: 34px; width: 34px; object-fit: contain; }
.brand-cn { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: 0.04em; }
.brand-en { color: var(--cyan); font-size: 12px; font-weight: 600; letter-spacing: 0.2em; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links > a { color: rgba(255,255,255,0.75); font-size: 14px; transition: color .2s; }
.nav-links > a:hover { color: #fff; }
.nav-dim { display: inline-flex; align-items: center; gap: 4px; }
.nav-toggle { display: none; background: none; border: none; color: #fff; cursor: pointer; }

/* ---------- 首屏 ---------- */
.hero { position: relative; overflow: hidden; background: linear-gradient(160deg, #1a21ff 0%, #1213d6 55%, #0e0066 100%); }
.hero-bg { position: absolute; inset: 0; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(140px); pointer-events: none; }
.hero-glow-1 { top: -160px; right: -10%; width: 480px; height: 480px; background: rgba(97,223,242,0.2); }
.hero-glow-2 { bottom: -30%; left: -10%; width: 420px; height: 420px; background: rgba(14,0,102,0.6); }

.hero-grid {
  position: relative; display: flex; align-items: center; gap: 40px;
  padding-top: 140px; padding-bottom: 90px;
}
.hero-copy { flex: 1; }
.hero-badge {
  display: inline-flex; padding: 7px 16px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.25); background: rgba(255,255,255,0.1);
  backdrop-filter: blur(6px);
  color: #fff; font-size: 12px; font-weight: 500; letter-spacing: 0.15em;
}
.hero h1 {
  margin-top: 24px; color: #fff;
  font-size: clamp(34px, 5.2vw, 58px); font-weight: 700;
  line-height: 1.15; letter-spacing: -0.015em;
}
.hero h1 em { font-style: normal; color: var(--cyan); }
.hero-sub {
  margin-top: 24px; max-width: 560px;
  color: rgba(255,255,255,0.8); font-size: 16px; line-height: 1.8;
}
.hero-ctas { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 16px; }
.hero-stats {
  margin-top: 56px; max-width: 560px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.hero-stats b { display: block; color: #fff; font-size: 28px; font-weight: 700; }
.hero-stats span { display: block; margin-top: 4px; color: rgba(255,255,255,0.6); font-size: 12px; letter-spacing: 0.08em; }

/* 浮动看板卡片 */
.hero-visual { flex: 1; display: flex; justify-content: flex-end; }
.dash-card {
  width: 100%; max-width: 440px; border-radius: 20px; padding: 20px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(14,0,102,0.8); backdrop-filter: blur(10px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}
.dash-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.dash-live { display: inline-flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.6); font-size: 12px; font-weight: 500; letter-spacing: 0.15em; }
.dash-where { color: rgba(255,255,255,0.4); font-size: 12px; }
.pulse-dot, .pulse-dot-green { display: inline-block; width: 10px; height: 10px; border-radius: 50%; }
.pulse-dot { background: var(--cyan); animation: pulse-dot 2s cubic-bezier(0.4,0,0.6,1) infinite; }
@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(97,223,242,0.55); }
  70% { box-shadow: 0 0 0 10px rgba(97,223,242,0); }
  100% { box-shadow: 0 0 0 0 rgba(97,223,242,0); }
}
.pulse-dot-green { background: #34d399; animation: pulse-green 2s cubic-bezier(0.4,0,0.6,1) infinite; }
@keyframes pulse-green {
  0% { box-shadow: 0 0 0 0 rgba(52,211,153,0.55); }
  70% { box-shadow: 0 0 0 10px rgba(52,211,153,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); }
}
.dash-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.dash-kpis > div { border-radius: 12px; background: rgba(255,255,255,0.05); padding: 10px 12px; }
.dash-kpis small { display: block; color: rgba(255,255,255,0.5); font-size: 11px; }
.dash-kpis b { display: block; margin-top: 2px; color: #fff; font-size: 18px; font-weight: 700; }
.dash-kpis b i { font-style: normal; margin-left: 2px; color: var(--cyan); font-size: 11px; font-weight: 400; }
.dash-chart { width: 100%; }
.dash-axis { display: flex; justify-content: space-between; margin-top: 10px; color: rgba(255,255,255,0.45); font-size: 11px; }

@keyframes draw-line { from { stroke-dashoffset: 1200; } to { stroke-dashoffset: 0; } }
.draw-line { stroke-dasharray: 1200; animation: draw-line 2.6s cubic-bezier(0.4,0,0.2,1) 0.5s both; }
@keyframes area-fade { from { opacity: 0; } to { opacity: 1; } }
.area-fade { animation: area-fade 1.4s ease 1.6s both; }
@keyframes float-y { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.float-y { animation: float-y 6s ease-in-out infinite; }

/* 首屏入场 */
@keyframes hero-rise { from { opacity: 0; transform: translateY(36px); } to { opacity: 1; transform: translateY(0); } }
.anim { opacity: 0; animation: hero-rise .9s cubic-bezier(0.22,1,0.36,1) forwards; }
.d0 { animation-delay: 0s; } .d1 { animation-delay: .12s; } .d2 { animation-delay: .26s; }
.d3 { animation-delay: .42s; } .d4 { animation-delay: .6s; }

.hero-curve { position: relative; height: 56px; overflow: hidden; }
.hero-curve > div { position: absolute; inset-inline: 0; bottom: 0; height: 112px; border-radius: 100% 100% 0 0; background: #fff; }

/* ---------- 行业跑马灯 ---------- */
.marquee-band { background: #fff; padding: 40px 0; border-bottom: 1px solid rgba(14,0,102,0.08); }
.marquee-title { text-align: center; color: rgba(16,16,40,0.45); font-size: 12px; font-weight: 500; letter-spacing: 0.3em; margin-bottom: 24px; }
.marquee-mask { overflow: hidden; mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent); -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: flex; width: max-content; align-items: center; animation: marquee-x 36s linear infinite; }
.marquee-track span { white-space: nowrap; color: rgba(16,16,40,0.7); font-size: 18px; font-weight: 600; }
.marquee-track i { width: 6px; height: 6px; border-radius: 50%; background: rgba(26,33,255,0.3); margin: 0 28px; flex: none; }
@keyframes marquee-x { from { transform: translate3d(0,0,0); } to { transform: translate3d(-50%,0,0); } }

/* ---------- 痛点 ---------- */
.pains { padding: 96px 0; }
.pains-grid { margin-top: 64px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.pain { border-top: 2px solid rgba(16,16,40,0.12); padding-top: 24px; transition: border-color .3s; }
.pain:hover { border-color: var(--brand); }
.pain-no { display: block; margin-top: 20px; color: rgba(26,33,255,0.5); font-size: 14px; font-weight: 700; }
.pain h3 { margin-top: 8px; font-size: 18px; font-weight: 700; }
.pain p { margin-top: 12px; font-size: 14px; color: rgba(16,16,40,0.6); }
.pains-quote {
  margin-top: 64px; padding-left: 20px; border-left: 4px solid var(--brand);
  font-size: 16px; color: rgba(16,16,40,0.75);
}
.pains-quote strong { color: var(--ink); }

/* ---------- 功能模块 ---------- */
.features { padding: 120px 0; }
.features-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 24px; }
.link-cyan { display: inline-flex; align-items: center; gap: 6px; color: var(--cyan); font-size: 14px; font-weight: 500; }
.link-cyan .icon { width: 16px; height: 16px; transition: transform .2s; }
.link-cyan:hover { color: #fff; }
.link-cyan:hover .icon { transform: translate(2px, -2px); }
.features-grid {
  margin-top: 64px; display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; border: 1px solid rgba(255,255,255,0.1); border-radius: 20px; overflow: hidden;
  background: rgba(255,255,255,0.1);
}
.feature { background: var(--navy-deep); padding: 28px; transition: background .3s; }
.feature:hover { background: var(--navy); }
.feature h3 { margin-top: 20px; color: #fff; font-size: 18px; font-weight: 700; }
.feature-en { display: block; margin-top: 4px; color: rgba(255,255,255,0.35); font-size: 10px; letter-spacing: 0.18em; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }
.feature p { margin-top: 16px; font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.7; }

/* ---------- 产品演示 ---------- */
.showcase { padding: 120px 0; }
.browser {
  margin-top: 56px; border-radius: 20px; overflow: hidden;
  border: 1px solid rgba(14,0,102,0.1); background: #fff;
  box-shadow: 0 32px 80px rgba(26,33,255,0.1);
}
.browser-bar { display: flex; align-items: center; gap: 6px; padding: 12px 16px; background: var(--bg-light); border-bottom: 1px solid rgba(14,0,102,0.08); }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-r { background: #ff5f57; } .dot-y { background: #febc2e; } .dot-g { background: #28c840; }
.browser-url {
  margin: 0 auto; display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border-radius: 6px; padding: 6px 14px;
  color: rgba(16,16,40,0.5); font-size: 12px; min-width: 280px; justify-content: center;
}
.browser-url .icon { width: 12px; height: 12px; }
.browser-body { display: flex; }
.mock-side {
  width: 176px; flex: none; padding: 12px;
  background: var(--navy); display: flex; flex-direction: column; gap: 4px;
}
.mock-brand { display: flex; align-items: center; gap: 8px; padding: 8px; margin-bottom: 12px; }
.mock-brand img { height: 24px; width: 24px; object-fit: contain; }
.mock-brand span { color: #fff; font-size: 14px; font-weight: 700; }
.mock-brand b { margin-left: 6px; color: var(--cyan); font-size: 10px; letter-spacing: 0.15em; font-weight: 600; }
.mock-item { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; color: rgba(255,255,255,0.55); font-size: 12px; }
.mock-item .icon { width: 14px; height: 14px; }
.mock-item.active { background: var(--brand); color: #fff; font-weight: 600; }
.mock-main { flex: 1; min-width: 0; padding: 20px; }
.mock-topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.mock-topbar b { font-size: 16px; }
.mock-topbar small { display: block; color: rgba(16,16,40,0.45); font-size: 12px; }
.mock-status { display: inline-flex; align-items: center; gap: 10px; color: rgba(16,16,40,0.5); font-size: 12px; }
.mock-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.mock-kpi { border: 1px solid rgba(14,0,102,0.08); background: #f8f9fe; border-radius: 12px; padding: 14px; }
.mock-kpi small { color: rgba(16,16,40,0.5); font-size: 11px; }
.mock-kpi b { display: block; margin-top: 4px; font-size: 20px; font-weight: 700; }
.mock-kpi b i { font-style: normal; margin-left: 2px; font-size: 11px; font-weight: 400; color: rgba(16,16,40,0.45); }
.mock-kpi em { display: block; margin-top: 4px; font-style: normal; font-size: 11px; font-weight: 500; color: #059669; }
.mock-panels { margin-top: 16px; display: grid; grid-template-columns: 2fr 3fr; gap: 16px; }
.mock-chart { border: 1px solid rgba(14,0,102,0.08); border-radius: 12px; padding: 16px; }
.mock-chart-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.mock-chart-head b { font-size: 12px; }
.mock-chart-head small { color: rgba(16,16,40,0.4); font-size: 10px; }
.mock-bars { display: flex; align-items: flex-end; gap: 10px; height: 128px; }
.mock-bars > div { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.mock-bars i { display: block; width: 100%; border-radius: 6px 6px 0 0; background: linear-gradient(to top, var(--brand), var(--cyan)); }
.mock-bars span { font-size: 10px; color: rgba(16,16,40,0.4); }
@keyframes bar-grow { from { transform: scaleY(0); } to { transform: scaleY(1); } }
.bar-grow { transform-origin: bottom; animation: bar-grow 1s cubic-bezier(0.22,1,0.36,1) both; }
.mock-table { border: 1px solid rgba(14,0,102,0.08); border-radius: 12px; overflow: hidden; }
.mock-table-head { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-bottom: 1px solid rgba(14,0,102,0.08); }
.mock-table-head b { font-size: 12px; }
.mock-table-head span { font-size: 10px; color: var(--brand); }
.mock-table table { width: 100%; border-collapse: collapse; font-size: 12px; text-align: left; }
.mock-table th { padding: 10px 12px; font-weight: 500; color: rgba(16,16,40,0.4); font-size: 10px; }
.mock-table td { padding: 10px 12px; border-top: 1px solid rgba(14,0,102,0.05); color: rgba(16,16,40,0.8); }
.mock-table td:nth-child(3) { color: rgba(16,16,40,0.6); }
.prog { display: inline-block; vertical-align: middle; width: 64px; height: 6px; border-radius: 999px; background: rgba(14,0,102,0.08); overflow: hidden; }
.prog i { display: block; height: 100%; border-radius: 999px; background: var(--brand); }
.mock-table em { font-style: normal; margin-left: 8px; font-size: 10px; color: rgba(16,16,40,0.5); }
.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 10px; font-weight: 500; }
.tag-blue { color: var(--brand); background: rgba(26,33,255,0.08); }
.tag-green { color: #059669; background: rgba(16,185,129,0.1); }
.tag-amber { color: #d97706; background: rgba(245,158,11,0.1); }

/* 全终端矩阵 */
.terminals-title { margin-top: 96px; }
.terminals { margin-top: 40px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.terminal { border: 1px solid rgba(14,0,102,0.1); border-radius: 16px; padding: 22px 18px; background: #fff; transition: transform .3s, box-shadow .3s; }
.terminal:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(26,33,255,0.1); }
.terminal b { display: block; margin-top: 14px; font-size: 15px; }
.terminal p { margin-top: 8px; font-size: 12.5px; color: rgba(16,16,40,0.55); line-height: 1.65; }

/* ---------- 车间实拍 ---------- */
.scenes { padding: 110px 0; background: #fff; }
.scenes-grid { margin-top: 56px; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 20px; }
.scene { position: relative; border-radius: 20px; overflow: hidden; margin: 0; min-height: 240px; }
.scene-wide { grid-row: span 1; }
.scene img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.scene:hover img { transform: scale(1.05); }
.scene figcaption {
  position: absolute; inset-inline: 0; bottom: 0;
  padding: 44px 20px 18px;
  background: linear-gradient(to top, rgba(7,0,58,0.85), transparent);
  color: #fff;
}
.scene figcaption b { display: block; font-size: 16px; }
.scene figcaption span { display: block; margin-top: 2px; font-size: 12px; color: rgba(255,255,255,0.65); }

/* ---------- 部署方案 ---------- */
.deploy { padding: 120px 0; }
.plans { margin-top: 64px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.plan { position: relative; display: flex; flex-direction: column; border: 1px solid rgba(14,0,102,0.12); border-radius: 20px; padding: 32px; background: #fff; transition: transform .3s; }
.plan:hover { transform: translateY(-6px); }
.plan-tag { position: absolute; right: 24px; top: 24px; padding: 4px 12px; border-radius: 999px; font-size: 11px; font-weight: 600; background: rgba(26,33,255,0.08); color: var(--brand); }
.plan h3 { margin-top: 20px; font-size: 20px; font-weight: 700; }
.plan-en { display: block; margin-top: 4px; color: rgba(16,16,40,0.35); font-size: 10px; letter-spacing: 0.18em; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }
.plan > p { margin-top: 16px; font-size: 14px; color: rgba(16,16,40,0.6); }
.plan ul { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.plan li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: rgba(16,16,40,0.75); }
.plan li .icon { width: 16px; height: 16px; margin-top: 3px; color: var(--brand); }
.plan li .icon svg { stroke-width: 2.5; }
.plan-link { margin-top: 32px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--brand); }
.plan-link .icon { width: 16px; height: 16px; }
.plan-hot { background: var(--brand); border-color: var(--brand); color: #fff; box-shadow: 0 24px 60px rgba(26,33,255,0.3); }
.plan-hot h3 { color: #fff; }
.plan-hot .plan-en { color: rgba(255,255,255,0.5); }
.plan-hot > p { color: rgba(255,255,255,0.8); }
.plan-hot li { color: rgba(255,255,255,0.9); }
.plan-hot li .icon { color: var(--cyan); }
.plan-tag-hot { background: var(--cyan); color: var(--navy); }
.plan-link-hot { color: var(--cyan); }
.upgrade-path {
  margin-top: 56px; display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 12px 16px; padding: 24px; border-radius: 20px; background: var(--bg-light);
  color: rgba(16,16,40,0.7); font-size: 14px;
}
.upgrade-path b { color: var(--ink); }
.chip { background: #fff; border-radius: 999px; padding: 6px 16px; font-weight: 500; color: var(--brand); box-shadow: 0 2px 8px rgba(14,0,102,0.08); }
.upgrade-path small { width: 100%; text-align: center; color: rgba(16,16,40,0.45); font-size: 12px; }

/* ---------- 实施流程 ---------- */
.process { padding: 120px 0; }
.process-grid { position: relative; display: grid; grid-template-columns: 2fr 3fr; gap: 56px; }
.process-sub { margin-top: 20px; max-width: 460px; color: rgba(255,255,255,0.6); font-size: 14px; }
.process-card { margin-top: 32px; display: inline-flex; align-items: center; gap: 12px; padding: 16px 20px; border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.05); border-radius: 16px; }
.process-card b { color: var(--cyan); font-size: 30px; font-weight: 700; }
.process-card span { color: rgba(255,255,255,0.6); font-size: 12px; line-height: 1.7; }
.step { position: relative; display: flex; gap: 24px; padding-left: 32px; padding-bottom: 40px; border-left: 1px solid rgba(255,255,255,0.12); }
.step:last-child, .step.last { padding-bottom: 0; }
.step-dot { position: absolute; left: -7px; top: 4px; width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--cyan); background: var(--navy-deep); transition: background .3s; }
.step:hover .step-dot { background: var(--cyan); }
.step-no { flex: none; width: 48px; color: rgba(255,255,255,0.25); font-size: 24px; font-weight: 700; transition: color .3s; }
.step:hover .step-no { color: var(--cyan); }
.step h3 { display: flex; align-items: baseline; flex-wrap: wrap; gap: 12px; color: #fff; font-size: 18px; font-weight: 700; }
.step h3 em { font-style: normal; padding: 2px 10px; border-radius: 999px; background: rgba(97,223,242,0.12); color: var(--cyan); font-size: 11px; font-weight: 500; }
.step p { margin-top: 8px; max-width: 520px; color: rgba(255,255,255,0.55); font-size: 14px; }

/* ---------- FAQ ---------- */
.faq { padding: 120px 0; }
.faq-list { margin-top: 48px; }
.faq-list details { border-bottom: 1px solid rgba(14,0,102,0.1); }
.faq-list summary {
  list-style: none; cursor: pointer; display: flex; align-items: baseline; gap: 12px;
  padding: 20px 0; font-size: 15.5px; font-weight: 600; transition: color .2s;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:hover { color: var(--brand); }
.faq-no { color: rgba(26,33,255,0.5); font-size: 14px; flex: none; }
.faq-chev { margin-left: auto; flex: none; width: 9px; height: 9px; align-self: center; border-right: 2px solid rgba(16,16,40,0.35); border-bottom: 2px solid rgba(16,16,40,0.35); transform: rotate(45deg); transition: transform .25s; }
.faq-list details[open] .faq-chev { transform: rotate(225deg); }
.faq-a { padding: 0 0 20px 36px; font-size: 14px; color: rgba(16,16,40,0.6); line-height: 1.8; }

/* ---------- 页脚 ---------- */
.footer { position: relative; overflow: hidden; background: var(--navy); padding: 110px 0 0; }
.footer-sub { margin: 20px auto 0; max-width: 520px; color: rgba(255,255,255,0.65); font-size: 14px; }
.footer-ctas { margin-top: 36px; display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.footer-contact-note { margin-top: 40px; color: rgba(255,255,255,0.35); font-size: 12px; letter-spacing: 0.05em; }
.footer-bar {
  position: relative; margin-top: 72px; padding: 28px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand img { height: 30px; width: 30px; object-fit: contain; }
.footer-brand span { color: #fff; font-size: 18px; font-weight: 700; }
.footer-brand b { margin-left: 8px; color: var(--cyan); font-size: 11px; letter-spacing: 0.2em; font-weight: 600; }
.footer-bar > p { color: rgba(255,255,255,0.4); font-size: 12px; text-align: center; }
.footer-copy { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.4); font-size: 12px; }
.footer-copy .icon { width: 14px; height: 14px; }

/* ---------- 滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(0.22,1,0.36,1), transform .8s cubic-bezier(0.22,1,0.36,1); transition-delay: var(--d, 0ms); will-change: opacity, transform; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-grid { flex-direction: column; align-items: stretch; }
  .hero-visual { justify-content: center; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .terminals { grid-template-columns: repeat(3, 1fr); }
  .scenes-grid { grid-template-columns: 1fr 1fr; }
  .scene-wide { grid-column: span 2; }
  .plans { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; }
  .process-grid { grid-template-columns: 1fr; }
  .mock-side { display: none; }
}
@media (max-width: 768px) {
  .nav-links {
    position: absolute; top: 64px; inset-inline: 0; display: none;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: rgba(7,0,58,0.96); backdrop-filter: blur(14px);
    padding: 16px 20px 24px; border-top: 1px solid rgba(255,255,255,0.1);
  }
  .nav-links.open { display: flex; }
  .nav-links > a { padding: 10px 12px; border-radius: 8px; }
  .nav-links > a:hover { background: rgba(255,255,255,0.1); }
  .nav-links .btn { margin-top: 8px; justify-content: center; }
  .nav-toggle { display: block; }
  .pains-grid { grid-template-columns: 1fr; gap: 32px; }
  .features-grid { grid-template-columns: 1fr; }
  .terminals { grid-template-columns: repeat(2, 1fr); }
  .scenes-grid { grid-template-columns: 1fr; }
  .scene-wide { grid-column: span 1; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .mock-kpis { grid-template-columns: repeat(2, 1fr); }
  .mock-panels { grid-template-columns: 1fr; }
  .browser-url { min-width: 0; }
  .upgrade-path .icon { display: none; }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .anim, .float-y, .draw-line, .area-fade, .pulse-dot, .pulse-dot-green, .bar-grow { animation: none !important; opacity: 1 !important; }
  .reveal { transition: none; opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* 备案号链接继承页脚配色（2026-09-19） */
.footer-copy a { color: inherit; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.25); }
.footer-copy a:hover { color: #fff; }