/* ============================================================
   星图 GEO · 科技风官网样式
   深色基底 + 青紫霓虹渐变 + 玻璃拟态
   ============================================================ */
:root {
  --bg: #060a16;
  --bg-alt: #0a1022;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-border: rgba(255, 255, 255, 0.09);
  --text: #eaf0ff;
  --dim: #93a1c0;
  --cyan: #00e5ff;
  --violet: #7c5cff;
  --grad: linear-gradient(100deg, #00e5ff, #7c5cff);
  --radius: 16px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { overflow-x: hidden; }
@supports (overflow: clip) {
  html, body { overflow-x: clip; }
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: min(1200px, 92%); margin: 0 auto; }
.container-narrow { width: min(860px, 92%); }
.dim { color: var(--dim); }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.grad-text-alt {
  background: linear-gradient(100deg, #ffd166, #ff5c8a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; border: none; cursor: pointer;
  font-family: var(--font); font-weight: 600;
  border-radius: 999px; transition: transform .25s, box-shadow .25s, background .25s;
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-sm { padding: 9px 22px; font-size: 14px; }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-primary {
  background: var(--grad); color: #04121a;
  box-shadow: 0 6px 30px rgba(0, 229, 255, .28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 40px rgba(124, 92, 255, .45); }
.btn-ghost {
  background: rgba(255,255,255,.05); color: var(--text);
  border: 1px solid var(--panel-border); backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn[disabled] { opacity: .6; cursor: not-allowed; }

/* ---------------- 导航 ---------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .3s, box-shadow .3s, backdrop-filter .3s;
}
.nav.scrolled {
  background: rgba(6, 10, 22, .78);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(255,255,255,.06), 0 10px 40px rgba(0,0,0,.4);
}
.nav-inner { display: flex; align-items: center; gap: 32px; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; }
.logo b { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.logo-mark {
  width: 26px; height: 26px; border-radius: 50%;
  border: 3px solid var(--cyan); position: relative; flex: none;
}
.logo-mark::after {
  content: ""; position: absolute; inset: 5px; border-radius: 50%;
  background: var(--violet); box-shadow: 0 0 12px var(--violet);
}
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a { font-size: 15px; color: var(--dim); transition: color .2s; position: relative; }
.nav-links a:hover { color: var(--text); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--grad); transition: width .25s;
}
.nav-links a:hover::after { width: 100%; }
.nav-cta { margin-left: 8px; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }

/* ---------------- Hero ---------------- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 140px 0 80px; overflow: hidden;
}
#bgCanvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(120px); opacity: .35; pointer-events: none; }
.hero-glow-a { width: 520px; height: 520px; background: #123a6e; top: -160px; left: -120px; }
.hero-glow-b { width: 460px; height: 460px; background: #3b2a86; bottom: -180px; right: -100px; }
.hero-inner { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 20px; border-radius: 999px; font-size: 13.5px; letter-spacing: 1px;
  background: rgba(0, 229, 255, .08); border: 1px solid rgba(0, 229, 255, .25);
  color: var(--cyan); margin-bottom: 28px;
}
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); animation: pulse 1.8s infinite; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,229,255,.6); }
  60% { box-shadow: 0 0 0 9px rgba(0,229,255,0); }
}
.hero-title { font-size: clamp(38px, 6.4vw, 72px); line-height: 1.2; font-weight: 800; letter-spacing: 1px; }
.hero-sub { margin-top: 24px; font-size: clamp(15px, 1.6vw, 18px); color: var(--dim); }
.hero-actions { display: flex; gap: 18px; margin-top: 40px; flex-wrap: wrap; justify-content: center; }
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  margin-top: 72px; width: min(920px, 100%);
}
.hstat {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: var(--radius); padding: 22px 10px; backdrop-filter: blur(10px);
}
.hstat b { display: block; font-size: 30px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hstat span { font-size: 13px; color: var(--dim); }
.scroll-hint { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 2; }
.scroll-hint i {
  display: block; width: 24px; height: 40px; border: 2px solid rgba(255,255,255,.25);
  border-radius: 14px; position: relative;
}
.scroll-hint i::after {
  content: ""; position: absolute; left: 50%; top: 8px; width: 4px; height: 8px;
  margin-left: -2px; border-radius: 4px; background: var(--cyan);
  animation: scrollDot 1.6s infinite;
}
@keyframes scrollDot { 0% { opacity: 1; transform: translateY(0); } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------------- 跑马灯 ---------------- */
.marquee-wrap { padding: 34px 0 10px; border-top: 1px solid rgba(255,255,255,.05); border-bottom: 1px solid rgba(255,255,255,.05); background: var(--bg-alt); }
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display: flex; gap: 56px; width: max-content; animation: marquee 26s linear infinite; }
.marquee-track span { font-size: 19px; font-weight: 700; color: rgba(255,255,255,.34); letter-spacing: 1px; }
@keyframes marquee { to { transform: translateX(-50%); } }
.marquee-caption { text-align: center; font-size: 13px; color: var(--dim); margin-top: 14px; letter-spacing: 2px; }

/* ---------------- 通用 Section ---------------- */
.section { padding: 110px 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.sec-head { text-align: center; max-width: 760px; margin: 0 auto 64px; }
.sec-tag {
  display: inline-block; padding: 6px 18px; border-radius: 999px; font-size: 13px;
  letter-spacing: 2px; color: var(--cyan);
  background: rgba(0,229,255,.07); border: 1px solid rgba(0,229,255,.22); margin-bottom: 18px;
}
.sec-head h2 { font-size: clamp(28px, 3.6vw, 44px); font-weight: 800; line-height: 1.35; }
.sec-head p { margin-top: 16px; color: var(--dim); font-size: 16px; }

/* ---------------- 问题宇宙 ---------------- */
.universe-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.orbit-box { display: flex; justify-content: center; padding: 16px 0; }
.orbit { position: relative; width: min(440px, 88vw); aspect-ratio: 1; }
.orbit-core {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 118px; height: 118px; border-radius: 50%;
  background: radial-gradient(circle at 32% 30%, rgba(0,229,255,.5), rgba(124,92,255,.35) 70%);
  border: 1px solid rgba(0,229,255,.5);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  box-shadow: 0 0 60px rgba(0,229,255,.35), inset 0 0 30px rgba(124,92,255,.4);
  animation: coreGlow 3.5s ease-in-out infinite;
  z-index: 3;
}
@keyframes coreGlow { 0%,100% { box-shadow: 0 0 40px rgba(0,229,255,.3), inset 0 0 26px rgba(124,92,255,.35);} 50% { box-shadow: 0 0 80px rgba(124,92,255,.5), inset 0 0 34px rgba(0,229,255,.4);} }
.orbit-core b { font-size: 22px; }
.orbit-core span { font-size: 12px; color: var(--cyan); letter-spacing: 2px; }
.orbit-ring {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  border: 1px dashed rgba(255,255,255,.14); border-radius: 50%;
}
.ring-1 { width: 56%; height: 56%; animation: spin 14s linear infinite; }
.ring-2 { width: 78%; height: 78%; animation: spin 22s linear infinite reverse; }
.ring-3 { width: 100%; height: 100%; animation: spin 30s linear infinite; }
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
.orbit-node {
  position: absolute; top: 0; left: 0; z-index: 2; will-change: transform;
  padding: 5px 12px; border-radius: 999px; font-size: 12px; white-space: nowrap;
  background: rgba(10, 16, 34, .9); border: 1px solid rgba(0,229,255,.35);
  color: var(--cyan); box-shadow: 0 0 14px rgba(0,229,255,.2);
}
.orbit-node.n-violet { border-color: rgba(124,92,255,.4); color: #b9a8ff; }
.orbit-node.n-gold { border-color: rgba(255,209,102,.35); color: #ffd166; }

.universe-copy h3 { font-size: 26px; margin-bottom: 14px; }
.cap-chips { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 20px; }
.chip {
  padding: 9px 20px; border-radius: 999px; font-size: 14px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--panel-border); color: var(--dim);
  transition: all .25s;
}
.chip:hover { border-color: var(--cyan); color: var(--text); }
.chip.active { background: var(--grad); color: #04121a; font-weight: 700; border-color: transparent; box-shadow: 0 4px 20px rgba(0,229,255,.3); }
.chip-detail {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-left: 3px solid var(--cyan); border-radius: 12px; padding: 18px 22px;
  min-height: 96px;
}
.chip-detail b { color: var(--cyan); }
.chip-detail p { color: var(--dim); font-size: 14.5px; margin-top: 6px; }

/* ---------------- 核心能力卡片 ---------------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.fcard {
  position: relative; overflow: hidden;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: var(--radius); padding: 34px 30px;
  transition: transform .3s, border-color .3s;
}
.fcard:hover { transform: translateY(-6px); border-color: rgba(0,229,255,.4); }
.fcard-wide { grid-column: span 2; }
.fcard-icon {
  width: 54px; height: 54px; border-radius: 14px; margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(0,229,255,.16), rgba(124,92,255,.16));
  border: 1px solid rgba(0,229,255,.3);
  display: flex; align-items: center; justify-content: center;
}
.fcard-icon svg { width: 26px; height: 26px; fill: none; stroke: var(--cyan); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.fcard h3 { font-size: 20px; margin-bottom: 14px; }
.fcard li { color: var(--dim); font-size: 14.5px; padding: 5px 0 5px 20px; position: relative; }
.fcard li::before {
  content: ""; position: absolute; left: 0; top: 13px; width: 8px; height: 8px;
  border-radius: 50%; background: var(--grad);
}
.fcard-glow {
  position: absolute; width: 200px; height: 200px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,255,.14), transparent 70%);
  top: -80px; right: -80px; pointer-events: none;
  opacity: 0; transition: opacity .35s;
}
.fcard:hover .fcard-glow { opacity: 1; }

/* ---------------- 增长闭环 ---------------- */
.loop-line { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; position: relative; }
.loop-line::before {
  content: ""; position: absolute; top: 34px; left: 6%; right: 6%; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,229,255,.4), rgba(124,92,255,.4), transparent);
}
.loop-step {
  position: relative; text-align: center; padding: 0 8px;
}
.loop-num {
  width: 68px; height: 68px; margin: 0 auto 18px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800; color: var(--cyan);
  background: var(--bg); border: 1px solid rgba(0,229,255,.4);
  box-shadow: 0 0 24px rgba(0,229,255,.18); position: relative; z-index: 2;
}
.loop-step:nth-child(even) .loop-num { color: #b9a8ff; border-color: rgba(124,92,255,.45); box-shadow: 0 0 24px rgba(124,92,255,.2); }
.loop-step h3 { font-size: 17px; margin-bottom: 10px; }
.loop-step p { font-size: 13.5px; color: var(--dim); }

/* ---------------- 数据看板 ---------------- */
.dash {
  background: rgba(10, 16, 34, .7); border: 1px solid var(--panel-border);
  border-radius: 22px; padding: 30px; backdrop-filter: blur(12px);
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
}
.dash-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 26px; }
.dcard {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 14px; padding: 18px 20px; position: relative;
}
.dcard span { font-size: 13px; color: var(--dim); }
.dcard b { display: block; font-size: 28px; font-weight: 800; margin-top: 4px; }
.dcard i.up::after { content: "▲ 上升"; position: absolute; top: 18px; right: 18px; font-size: 11px; color: #2ee6a8; font-style: normal; }
.dash-charts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.chart-box {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 14px; padding: 20px;
}
.chart-box h4 { font-size: 14.5px; color: var(--dim); margin-bottom: 14px; font-weight: 600; }
.chart-box canvas { max-height: 230px; }
.source-list { display: flex; flex-direction: column; gap: 14px; padding-top: 6px; }
.source-item { font-size: 14px; }
.source-item .srow { display: flex; justify-content: space-between; margin-bottom: 6px; }
.source-item .srow b { color: var(--cyan); }
.source-bar { height: 8px; border-radius: 6px; background: rgba(255,255,255,.07); overflow: hidden; }
.source-bar i { display: block; height: 100%; border-radius: 6px; background: var(--grad); width: 0; transition: width 1.2s cubic-bezier(.2,.8,.2,1); }

/* ---------------- FAQ ---------------- */
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 14px; overflow: hidden; transition: border-color .3s;
}
.faq-item[open] { border-color: rgba(0,229,255,.35); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 20px 24px;
  font-size: 16px; font-weight: 600;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
  flex: none; width: 22px; height: 22px; position: relative; transition: transform .3s;
}
.faq-item summary i::before, .faq-item summary i::after {
  content: ""; position: absolute; background: var(--cyan); border-radius: 2px;
  top: 50%; left: 50%;
}
.faq-item summary i::before { width: 14px; height: 2px; transform: translate(-50%, -50%); }
.faq-item summary i::after { width: 2px; height: 14px; transform: translate(-50%, -50%); }
.faq-item[open] summary i { transform: rotate(45deg); }
.faq-item p { padding: 0 24px 22px; color: var(--dim); font-size: 14.5px; }

/* ---------------- CTA ---------------- */
.section-cta { position: relative; overflow: hidden; background: var(--bg-alt); }
.cta-glow {
  position: absolute; width: 700px; height: 700px; border-radius: 50%;
  background: radial-gradient(circle, rgba(124,92,255,.16), transparent 65%);
  top: -260px; left: 50%; transform: translateX(-50%); pointer-events: none;
}
.cta-form {
  position: relative; background: rgba(10, 16, 34, .75);
  border: 1px solid var(--panel-border); border-radius: 22px;
  padding: 40px; backdrop-filter: blur(12px);
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 13.5px; color: var(--dim); margin-bottom: 8px; }
.form-field input, .form-field textarea {
  width: 100%; padding: 13px 16px; border-radius: 12px; resize: vertical;
  background: rgba(255,255,255,.045); border: 1px solid var(--panel-border);
  color: var(--text); font-size: 15px; font-family: var(--font);
  transition: border-color .25s, box-shadow .25s; outline: none;
}
.form-field input:focus, .form-field textarea:focus {
  border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,229,255,.12);
}
.form-field input::placeholder, .form-field textarea::placeholder { color: rgba(147,161,192,.5); }
.form-note { text-align: center; font-size: 12.5px; color: var(--dim); margin-top: 14px; }

/* ---------------- Footer ---------------- */
.footer { border-top: 1px solid rgba(255,255,255,.06); padding: 60px 0 0; background: #05080f; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 44px; }
.footer h5 { font-size: 15px; margin-bottom: 16px; }
.footer-grid a:not(.logo) { display: block; color: var(--dim); font-size: 14px; padding: 5px 0; transition: color .2s; }
.footer-grid a:not(.logo):hover { color: var(--cyan); }
.footer-desc { font-size: 14px; margin-top: 16px; max-width: 300px; }
.sub-form { display: flex; gap: 10px; }
.sub-form input {
  flex: 1; min-width: 0; padding: 10px 14px; border-radius: 999px;
  background: rgba(255,255,255,.045); border: 1px solid var(--panel-border);
  color: var(--text); font-size: 14px; outline: none; font-family: var(--font);
}
.sub-form input:focus { border-color: var(--cyan); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.05); padding: 20px 0;
  text-align: center; font-size: 13px; color: var(--dim);
  margin-top: 0; width: 100%;
}

/* ---------------- Toast ---------------- */
.toast {
  position: fixed; bottom: 34px; left: 50%; transform: translate(-50%, 80px);
  background: rgba(10, 16, 34, .95); border: 1px solid rgba(0,229,255,.4);
  color: var(--text); padding: 14px 26px; border-radius: 999px;
  font-size: 14.5px; z-index: 200; opacity: 0; pointer-events: none;
  transition: transform .4s cubic-bezier(.2,.9,.3,1.2), opacity .4s;
  box-shadow: 0 10px 40px rgba(0,0,0,.5); max-width: 90vw; text-align: center;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }
.toast.error { border-color: rgba(255, 92, 138, .5); }

/* ---------------- 滚动显现 ---------------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.8,.2,1); }
.reveal.visible { opacity: 1; transform: none; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1000px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .fcard-wide { grid-column: span 2; }
  .loop-line { grid-template-columns: repeat(2, 1fr); gap: 34px 18px; }
  .loop-line::before { display: none; }
  .universe-grid { grid-template-columns: 1fr; gap: 44px; }
  .dash-cards { grid-template-columns: repeat(2, 1fr); }
  .dash-charts { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; margin-left: auto; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 4px;
    position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(6,10,22,.97); backdrop-filter: blur(16px);
    padding: 18px 5%; border-bottom: 1px solid var(--panel-border);
  }
  .nav-links.open a { padding: 12px 0; font-size: 16px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .fcard-wide { grid-column: span 1; }
  .loop-line { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-form { padding: 26px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .br-pc { display: none; }
  .section { padding: 80px 0; }
}

/* ============================================================
   企业级质感增强层（Premium Overrides）
   ============================================================ */

/* ---------- 字体与排版 ---------- */
body { font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif; }
.hero-title, .sec-head h2, .universe-copy h3 { letter-spacing: .01em; }
.hstat b, .dcard b, .case-metric b, .loop-num {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

/* ---------- 滚动条与选区 ---------- */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #060a16; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(0,229,255,.4), rgba(124,92,255,.4));
  border-radius: 6px; border: 2px solid #060a16;
}
::selection { background: rgba(0,229,255,.3); color: #fff; }

/* ---------- 顶部滚动进度条 ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: var(--grad); z-index: 300;
  box-shadow: 0 0 12px rgba(0,229,255,.55);
  transition: width .12s linear;
}

/* ---------- 全局胶片噪点肌理 ---------- */
body::after {
  content: ""; position: fixed; inset: 0; z-index: 999; pointer-events: none; opacity: .028;
  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='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Hero 蓝图网格 ---------- */
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(ellipse 72% 62% at 50% 42%, #000 25%, transparent 78%);
  mask-image: radial-gradient(ellipse 72% 62% at 50% 42%, #000 25%, transparent 78%);
}
.section-cta::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(ellipse 60% 70% at 50% 40%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 60% 70% at 50% 40%, #000 20%, transparent 75%);
}

/* ---------- 导航渐变发丝线 ---------- */
.nav::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,255,.35), rgba(124,92,255,.35), transparent);
  opacity: 0; transition: opacity .35s;
}
.nav.scrolled::after { opacity: 1; }

/* ---------- 渐变描边卡片 ---------- */
.fcard, .dcard, .chart-box, .case-card, .assure-item {
  border: 1px solid transparent;
  background:
    linear-gradient(165deg, rgba(255,255,255,.055), rgba(255,255,255,.015)) padding-box,
    linear-gradient(150deg, rgba(255,255,255,.14), rgba(255,255,255,.03) 45%, rgba(0,229,255,.10)) border-box;
}
.fcard:hover, .dcard:hover, .chart-box:hover, .case-card:hover, .assure-item:hover {
  background:
    linear-gradient(165deg, rgba(255,255,255,.07), rgba(255,255,255,.02)) padding-box,
    linear-gradient(150deg, rgba(0,229,255,.45), rgba(255,255,255,.06) 45%, rgba(124,92,255,.35)) border-box;
}

/* ---------- 鼠标悬停光斑 ---------- */
.fcard::after, .case-card::after, .assure-item::after, .hstat::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), rgba(0,229,255,.09), transparent 65%);
  opacity: 0; transition: opacity .35s;
}
.fcard:hover::after, .case-card:hover::after, .assure-item:hover::after, .hstat:hover::after { opacity: 1; }
.hstat { position: relative; overflow: hidden; transition: transform .3s; }
.hstat:hover { transform: translateY(-4px); }

/* ---------- 主按钮流光 ---------- */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::before {
  content: ""; position: absolute; top: 0; left: -85%; width: 55%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.55), transparent);
  transform: skewX(-22deg); transition: left .65s ease;
}
.btn-primary:hover::before { left: 130%; }

/* ---------- 滚动显现分组延迟 ---------- */
.feature-grid .fcard:nth-child(2) { transition-delay: .07s; }
.feature-grid .fcard:nth-child(3) { transition-delay: .14s; }
.feature-grid .fcard:nth-child(4) { transition-delay: .07s; }
.feature-grid .fcard:nth-child(5) { transition-delay: .14s; }
.hero-stats .hstat:nth-child(2) { transition-delay: .08s; }
.hero-stats .hstat:nth-child(3) { transition-delay: .16s; }
.hero-stats .hstat:nth-child(4) { transition-delay: .24s; }
.case-grid .case-card:nth-child(2) { transition-delay: .08s; }
.case-grid .case-card:nth-child(3) { transition-delay: .16s; }
.loop-line .loop-step:nth-child(2) { transition-delay: .06s; }
.loop-line .loop-step:nth-child(3) { transition-delay: .12s; }
.loop-line .loop-step:nth-child(4) { transition-delay: .18s; }
.loop-line .loop-step:nth-child(5) { transition-delay: .24s; }

/* ---------- 看板窗口化（mac 风格标题栏） ---------- */
.dash {
  border: 1px solid transparent;
  background:
    linear-gradient(170deg, rgba(14,20,40,.92), rgba(8,12,26,.92)) padding-box,
    linear-gradient(150deg, rgba(255,255,255,.15), rgba(255,255,255,.04) 40%, rgba(0,229,255,.12)) border-box;
}
.dash-chrome {
  display: flex; align-items: center; gap: 8px;
  padding-bottom: 16px; margin-bottom: 22px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.dash-chrome .dot { width: 11px; height: 11px; border-radius: 50%; flex: none; }
.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }
.dash-chrome-title {
  margin-left: 10px; font-size: 12.5px; color: var(--dim); letter-spacing: 1.5px;
  font-family: "Inter", sans-serif;
}
.dash-live {
  margin-left: auto; display: inline-flex; align-items: center; gap: 7px;
  font-size: 10.5px; letter-spacing: 2px; font-weight: 700; color: #2ee6a8;
  border: 1px solid rgba(46,230,168,.32); background: rgba(46,230,168,.07);
  padding: 4px 12px; border-radius: 999px; font-family: "Inter", sans-serif;
}
.dash-live i {
  width: 6px; height: 6px; border-radius: 50%; background: #2ee6a8;
  animation: livePulse 1.6s infinite;
}
@keyframes livePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(46,230,168,.55); }
  60% { box-shadow: 0 0 0 6px rgba(46,230,168,0); }
}

/* ---------- 客户案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  position: relative; overflow: hidden; border-radius: var(--radius);
  padding: 36px 30px 28px; transition: transform .3s;
}
.case-card:hover { transform: translateY(-6px); }
.case-metric b {
  display: block; font-size: 46px; font-weight: 800; line-height: 1.1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.case-metric span { display: block; font-size: 13px; color: var(--dim); margin-top: 4px; }
.case-quote { margin: 22px 0 24px; font-size: 14.5px; color: #c6d0e6; min-height: 66px; }
.case-meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 12.5px; }
.case-industry {
  color: var(--cyan); border: 1px solid rgba(0,229,255,.25);
  background: rgba(0,229,255,.06); padding: 4px 12px; border-radius: 999px; white-space: nowrap;
}
.case-period { color: var(--dim); white-space: nowrap; }

/* ---------- 服务承诺 ---------- */
.assure-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.assure-item {
  position: relative; overflow: hidden; text-align: center;
  padding: 32px 20px 28px; border-radius: var(--radius); transition: transform .3s;
}
.assure-item:hover { transform: translateY(-4px); }
.assure-icon {
  width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(0,229,255,.14), rgba(124,92,255,.14));
  border: 1px solid rgba(0,229,255,.25);
}
.assure-icon svg {
  width: 24px; height: 24px; fill: none; stroke: var(--cyan);
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}
.assure-item h4 { font-size: 16px; margin-bottom: 6px; }
.assure-item p { font-size: 13px; color: var(--dim); }

/* ---------- 页脚渐变发丝线 ---------- */
.footer { border-top: none; position: relative; }
.footer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,255,.3), rgba(124,92,255,.3), transparent);
}

/* ---------- 新增板块响应式 ---------- */
@media (max-width: 1000px) {
  .case-grid { grid-template-columns: 1fr; }
  .case-quote { min-height: 0; }
  .assure-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .assure-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .assure-item { padding: 24px 12px 20px; }
  .assure-item h4 { font-size: 14px; }
  .assure-item p { font-size: 12px; }
  .case-metric b { font-size: 40px; }
}