/* ATOMYHOUSE Brand System v2 — 工程控制台 / 蓝图仪表盘
   class API 与 v1 完全一致（视图无需改动），仅升级视觉 */
:root {
  /* 品牌青色阶 */
  --teal-50:#E6F4F5; --teal-100:#C2E6E8; --teal-200:#93D4D8; --teal-300:#5FBEC4;
  --teal-400:#2BA3AB; --teal-500:#008B94; --teal-600:#007880; --teal-700:#006970; --teal-900:#04363A;
  --teal: #008B94;
  --teal-light: #93D4D8;
  --teal-dark: #006970;
  --teal-glow: rgba(0, 139, 148, 0.4);
  --teal-bright: #3FE0E8;
  --teal-06:rgba(0,139,148,.06); --teal-10:rgba(0,139,148,.10); --teal-16:rgba(0,139,148,.16); --teal-ring:rgba(0,139,148,.42);
  /* 暗色 5 级 elevation */
  --bg: #04070A;
  --bg-alt: #0A0F15;
  --surface: #111922;
  --surface-2: #18222E;
  --surface-hover: #18222E;
  --border: #1B2632;
  --border-strong: #2A3849;
  --text: #EAF1F7;
  --muted: #9FB2C6;
  --faint: #7C90A4;
  --paper: #FFFFFF;
  --gradient: linear-gradient(135deg, #008B94 0%, #2BA3AB 100%);
  --font: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", sans-serif;
  --font-display: "Space Grotesk", "IBM Plex Sans", "Noto Sans SC", sans-serif;
  --font-mono: "IBM Plex Mono", "Noto Sans SC", monospace;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --container: 1200px;
  --header-h: 72px;
  --ease: cubic-bezier(.16,.84,.34,1);
  --sh-md: 0 12px 34px rgba(0,0,0,.45);
  --sh-lg: 0 22px 60px rgba(0,0,0,.55);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font);
  background: var(--bg); color: var(--text);
  line-height: 1.65; -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--teal-700); }

img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal-200); transition: color 0.2s; }
a:hover { color: var(--paper); }
:where(a,button,.btn,.card,.case-card,.chip,input,select,textarea):focus-visible {
  outline: 2px solid var(--teal-300); outline-offset: 3px; border-radius: var(--radius-sm);
}
:focus:not(:focus-visible) { outline: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; position: relative; }
.center { text-align: center; }
.mono { font-family: var(--font-mono); letter-spacing: 0.06em; font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); font-size: 0.9rem; }
.note { margin-top: 2rem; }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 42rem; line-height: 1.7; }
h1,h2,h3,h4 { letter-spacing: -0.01em; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 200; height: var(--header-h);
  background: rgba(6, 10, 14, 0.72);
  backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid transparent; transition: background .3s, border-color .3s;
}
.site-header.scrolled { background: rgba(6, 10, 14, 0.94); border-bottom-color: var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.logo { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; color: var(--text); }
.logo-mark { flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-en { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: 0.02em; }
.logo-y { color: var(--teal-300); }
.logo-cn { font-size: 0.6rem; letter-spacing: 0.3em; color: var(--faint); font-family: var(--font-mono); }

.nav { display: flex; gap: 1.75rem; align-items: center; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.9rem; font-weight: 500; }
.nav a:not(.btn):hover { color: var(--text); }
.nav a.btn { color: #fff; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); transition: transform 0.3s, opacity 0.3s; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: 0.72rem 1.4rem; border-radius: var(--radius-sm);
  font-weight: 600; text-decoration: none; border: 1px solid transparent; cursor: pointer;
  font-size: 0.9rem; font-family: var(--font);
  transition: transform 0.2s var(--ease), box-shadow 0.25s, background 0.25s, border-color 0.25s, color 0.25s;
}
.btn-sm { padding: 0.5rem 1.05rem; font-size: 0.8rem; }
.btn-lg { padding: 0.85rem 1.75rem; font-size: 1rem; }
.btn-primary {
  background: var(--gradient); color: #fff; text-shadow: 0 1px 1px rgba(0,0,0,.28);
  box-shadow: inset 0 0 0 1px var(--teal-600), 0 1px 2px rgba(0,0,0,.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--sh-md), 0 0 26px var(--teal-ring); color: #fff; }
.btn-outline { border: 1px solid var(--border-strong); color: var(--text); background: rgba(255,255,255,.02); }
.btn-outline:hover { border-color: var(--teal-400); color: var(--teal-200); transform: translateY(-2px); }

/* Hero (旧首页类；新首页用 .cx 覆盖，内页不使用) */
.hero { position: relative; padding: 5rem 0 4.5rem; overflow: hidden; min-height: 80vh; display: flex; align-items: center; }
@keyframes grid-flow { 0% { background-position: 0 0; } 100% { background-position: 56px 56px; } }
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%, var(--teal-16), transparent),
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: auto, 56px 56px, 56px 56px; opacity: 0.5;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 30%, black 20%, transparent 75%);
  animation: grid-flow 30s linear infinite;
}
.hero-inner { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block; padding: 0.4rem 0.95rem; border-radius: 999px;
  background: var(--teal-06); border: 1px solid var(--teal-700);
  font-size: 0.72rem; color: var(--teal-200); text-transform: uppercase; letter-spacing: .12em;
}
.hero h1 { font-family: var(--font-display); font-size: clamp(2.25rem, 5.5vw, 3.5rem); font-weight: 600; line-height: 1.12; margin: 1.25rem 0 1rem; max-width: 18ch; letter-spacing: -0.02em; }
.hero-sub { font-size: 1.1rem; color: var(--muted); max-width: 38rem; margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.inline-stats { border-top: none; padding-top: 1.5rem; max-width: 480px; grid-template-columns: repeat(2, 1fr); }
.stat strong { display: block; font-family: var(--font-display); font-size: 1.5rem; color: var(--text); }
.stat span { font-size: 0.8rem; color: var(--muted); }

/* Sections */
.section { padding: 5.5rem 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-head { margin-bottom: 2.75rem; }
.section-head.center, .section-label.center { text-align: center; }
.section-head.center { margin-left: auto; margin-right: auto; }
.section-label {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--teal-300);
  text-transform: uppercase; letter-spacing: 0.18em; margin-bottom: 0.7rem;
  display: inline-flex; align-items: center; gap: .6rem;
}
.section-label::before { content:''; width: 22px; height: 1px; background: var(--teal-700); }
.section-label.center::before, .center .section-label::before { display: none; }
.section-head h2, .page-hero h1 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(1.85rem, 3.2vw, 2.5rem); margin: 0 0 0.6rem; letter-spacing: -0.02em; line-height: 1.15;
}
.section-desc { color: var(--muted); margin: 0; font-size: 1.05rem; max-width: 46rem; }
.section-cta { text-align: center; margin-top: 2.75rem; }

/* Page hero — 蓝图坐标纹理 */
.page-hero { position: relative; min-height: 56vh; display: flex; align-items: center; padding: 5rem 0 3.5rem; border-bottom: 1px solid var(--border); overflow: hidden; }
.page-hero::before {
  content:''; position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: .6;
  background:
    radial-gradient(900px 420px at 50% -120px, var(--teal-10), transparent 70%),
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: auto, 56px 56px, 56px 56px;
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 30%, transparent 80%);
}
.page-hero > .container { position: relative; z-index: 1; width: 100%; will-change: transform, opacity; }
.page-hero h1 { font-size: clamp(2.4rem, 5.2vw, 4.2rem); margin: 0.8rem 0 1.2rem; line-height: 1.06; max-width: 20ch; }
.page-hero .lead { font-size: 1.25rem; max-width: 44rem; }
@keyframes ph-in { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
.page-hero .container > * { animation: ph-in .85s var(--ease) both; }
.page-hero .container > *:nth-child(2) { animation-delay: .08s; }
.page-hero .container > *:nth-child(3) { animation-delay: .16s; }
.page-hero .container > *:nth-child(4) { animation-delay: .24s; }
@media (max-width: 768px) { .page-hero { min-height: 44vh; padding: 4rem 0 2.5rem; } }

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.25rem; }
.card {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.75rem;
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease), box-shadow 0.28s;
  box-shadow: 0 1px 2px rgba(0,0,0,.4);
}
.card::before { content:''; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--teal-300), transparent); opacity:.4; }
.card-glow:hover, .card:hover {
  border-color: var(--teal-700); transform: translateY(-4px);
  box-shadow: var(--sh-lg), 0 0 0 1px var(--teal-ring);
}
.card h3 { margin: 0 0 0.35rem; font-size: 1.2rem; color: var(--text); letter-spacing: -.01em; }
.card-sub { color: var(--teal-300); font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: .03em; margin: 0 0 0.75rem; }
.card p { color: var(--muted); font-size: 0.9rem; margin: 0 0 1rem; }
.card-link { font-size: 0.875rem; font-weight: 600; text-decoration: none; color: var(--teal-200); display: inline-flex; align-items: center; gap: .3rem; }
.card-link:hover { color: var(--teal-100); gap: .5rem; }
.card-icon {
  width: 46px; height: 46px; border-radius: var(--radius); margin-bottom: 1.1rem;
  background: radial-gradient(120% 120% at 30% 20%, var(--teal-16), var(--surface-2));
  border: 1px solid var(--teal-700); position: relative;
}
.card-icon::after { content: ''; position: absolute; inset: 13px; border-radius: 4px; border: 1.5px solid var(--teal-300); opacity: 0.7; }

/* Flow */
.flow { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; list-style: none; padding: 0; margin: 0; }
.flow li { display: flex; align-items: center; gap: 0.75rem; padding: 0.9rem 1.25rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); font-weight: 500; font-size: .92rem; }
.flow-num { font-family: var(--font-mono); color: var(--teal-300); font-size: 0.85rem; }

/* Cases */
.case-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.25rem; }
.case-grid-full { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.case-card {
  position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.6rem;
  transition: border-color 0.25s, transform 0.25s var(--ease), box-shadow 0.25s;
  box-shadow: 0 1px 2px rgba(0,0,0,.4);
}
.case-card::before { content:''; position:absolute; top:0; left:0; width:40%; height:3px; background:linear-gradient(90deg, var(--teal-500), transparent); }
.case-card:hover { border-color: var(--teal-700); transform: translateY(-4px); box-shadow: var(--sh-md); }
.case-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; margin-top: .4rem; }
.case-industry { font-size: 0.74rem; font-family: var(--font-mono); color: var(--teal-300); text-transform: uppercase; letter-spacing: 0.06em; }
.case-year { font-size: 0.78rem; color: var(--faint); font-family: var(--font-mono); }
.case-card h3 { margin: 0 0 0.5rem; font-size: 1.08rem; line-height: 1.4; }
.case-client { color: var(--muted); font-size: 0.875rem; margin: 0 0 1rem; }
.case-footer { display: flex; justify-content: space-between; align-items: center; padding-top: 0.75rem; border-top: 1px solid var(--border); font-size: 0.8rem; }
.case-service { color: var(--muted); font-family: var(--font-mono); }
.case-amount { color: var(--teal-200); font-family: var(--font-mono); font-weight: 500; }

/* Clients */
.client-tags { display: flex; flex-wrap: wrap; gap: 0.7rem; justify-content: center; }
.client-tags span {
  padding: 0.45rem 0.95rem; border-radius: var(--radius-sm);
  background: var(--surface); border: 1px solid var(--border-strong);
  font-size: 0.8rem; color: var(--muted); font-family: var(--font-mono);
}

/* CTA Banner — 暗色 + 品牌青辉光 */
.cta-banner { position: relative; padding: 4rem 0; background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); overflow: hidden; }
.cta-banner::before { content:''; position:absolute; inset:0; pointer-events:none; background:radial-gradient(700px 320px at 50% -40%, var(--teal-16), transparent 70%); }
.cta-inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.cta-inner h2 { margin: 0 0 0.4rem; font-family: var(--font-display); font-weight: 600; color: var(--text); }
.cta-inner p { margin: 0; color: var(--muted); }
.cta-banner .btn-primary { background: var(--gradient); color: #fff; text-shadow: 0 1px 1px rgba(0,0,0,.28); }

/* Solutions page */
.solutions-list { display: flex; flex-direction: column; gap: 1.5rem; }
.solution-block {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: auto 1fr; gap: 1.5rem; padding: 2rem;
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: 0 1px 2px rgba(0,0,0,.4); transition: border-color .25s, transform .25s var(--ease);
}
.solution-block::before { content:''; position:absolute; top:0; left:0; right:0; height:1px; background:linear-gradient(90deg, transparent, var(--teal-300), transparent); opacity:.4; }
.solution-block:hover { border-color: var(--teal-700); transform: translateY(-3px); }
.solution-num { font-family: var(--font-display); font-size: 2.2rem; color: transparent; -webkit-text-stroke: 1px var(--teal-700); line-height: 1; }
.solution-cat { font-family: var(--font-mono); font-size: 0.7rem; color: var(--teal-300); letter-spacing: 0.1em; text-transform: uppercase; }
.solution-block h2 { margin: 0.25rem 0; font-family: var(--font-display); font-weight: 600; }
.solution-sub { color: var(--teal-200); margin: 0 0 0.75rem; }
.feature-list { margin: 1rem 0 0; padding-left: 0; list-style: none; color: var(--muted); }
.feature-list li { position: relative; padding-left: 1.6rem; margin-bottom: 0.5rem; }
.feature-list li::before { content:''; position:absolute; left:0; top:.5em; width:9px; height:5px; border-left:2px solid var(--teal-300); border-bottom:2px solid var(--teal-300); transform: rotate(-45deg); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.two-col h2 { font-family: var(--font-display); font-weight: 600; color: var(--teal-200); }

/* About prose */
.prose { max-width: 720px; }
.prose h2 { font-family: var(--font-display); font-weight: 600; margin-top: 2rem; color: var(--teal-200); }
.prose ul { color: var(--muted); padding-left: 1.25rem; }
.prose li { margin-bottom: 0.5rem; }
.prose strong { color: var(--text); }

/* Credentials (legacy) */
.cred-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.25rem; }
.cred-card { text-align: center; padding: 2rem 1.5rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.cred-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.cred-card h3 { margin: 0 0 0.5rem; }
.cred-card p { color: var(--muted); font-size: 0.9rem; margin: 0; }

/* Contact */
.contact-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 3rem; align-items: start; }
.contact-info h2 { font-family: var(--font-display); font-weight: 600; margin-bottom: 1.5rem; }
.contact-item { display: flex; gap: 1rem; margin-bottom: 1.25rem; align-items: flex-start; }
.contact-item .mono { width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; background: var(--teal-10); border: 1px solid var(--teal-700); border-radius: var(--radius-sm); color: var(--teal-200); font-size: 0.75rem; flex-shrink: 0; }
.contact-item strong { display: block; font-size: 0.78rem; color: var(--muted); margin-bottom: 0.15rem; }
.contact-item a { color: var(--teal-200); text-decoration: none; }
.contact-form-wrap { background: linear-gradient(180deg, var(--surface-2), var(--surface)); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2rem; }
.contact-form label { display: block; margin-bottom: 1rem; font-size: 0.85rem; color: var(--muted); }
.contact-form input, .contact-form select, .contact-form textarea {
  display: block; width: 100%; margin-top: 0.4rem; padding: 0.72rem 0.9rem;
  background: var(--bg); border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  color: var(--text); font: inherit; transition: border-color 0.2s, box-shadow .2s;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--teal-400); box-shadow: 0 0 0 3px var(--teal-06); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.alert { padding: 0.85rem 1rem; border-radius: var(--radius-sm); margin-bottom: 1.25rem; font-size: 0.9rem; }
.alert-success { background: rgba(0, 196, 184, 0.12); border: 1px solid rgba(0, 196, 184, 0.35); color: #7EEBE0; }
.alert-error { background: rgba(220, 60, 60, 0.12); border: 1px solid rgba(220, 60, 60, 0.35); color: #F0A0A0; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-alt); padding: 3.5rem 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1.2fr; gap: 2rem; padding-bottom: 2.5rem; }
.footer-logo { display: flex; gap: 0.75rem; align-items: center; margin-bottom: 0.75rem; }
.footer-logo strong { display: block; font-family: var(--font-display); letter-spacing: 0.04em; }
.footer-logo span { font-size: 0.8rem; color: var(--muted); }
.footer-tag { font-family: var(--font-mono); font-size: 0.75rem; color: var(--teal-300); letter-spacing: 0.06em; }
.footer-links h4, .footer-contact h4 { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--teal-300); margin: 0 0 1rem; }
.footer-links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover { color: var(--text); }
.footer-contact p { margin: 0 0 0.5rem; font-size: 0.875rem; color: var(--muted); }
.footer-contact .mono { color: var(--teal-300); margin-right: 0.35rem; }
.footer-bottom { border-top: 1px solid var(--border); padding: 1.5rem 0; text-align: center; }
.footer-bottom p { margin: 0; font-size: 0.78rem; color: var(--faint); font-family: var(--font-mono); }

/* Responsive */
@media (max-width: 900px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .solution-block { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; text-align: center; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav { position: fixed; top: var(--header-h); left: 0; right: 0; background: rgba(6,10,14,.97); border-bottom: 1px solid var(--border); flex-direction: column; padding: 1.5rem; gap: 1rem; transform: translateY(-120%); opacity: 0; transition: transform 0.3s, opacity 0.3s; pointer-events: none; }
  .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .form-row { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding: 3.5rem 0 3rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* 案例筛选 */
.filter-bar { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 1.75rem; }
.filter-group { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.filter-label { color: var(--muted); margin-right: 0.5rem; font-size: 0.8rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: .08em; }
.chip { display: inline-block; padding: 0.35rem 0.85rem; border-radius: 999px; border: 1px solid var(--border-strong); color: var(--muted); font-size: 0.82rem; font-family: var(--font-mono); transition: all 0.2s; }
.chip:hover { border-color: var(--teal-400); color: var(--text); }
.chip-active { background: var(--teal); border-color: var(--teal); color: #fff; }

/* 案例卡片链接化 */
.case-card-link { display: block; text-decoration: none; color: inherit; }

/* 案例详情事实区 */
.case-detail-facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.case-detail-facts div { display: flex; flex-direction: column; gap: 0.25rem; padding: 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); border-left: 2px solid var(--teal-700); }
.case-detail-facts span { font-size: 0.75rem; }

/* 受众入口卡片 */
.audience-card { display: flex; flex-direction: column; text-decoration: none; color: inherit; }
.audience-card .card-link { margin-top: auto; padding-top: 0.75rem; }

/* PoC 说明 */
.poc-notes { margin-top: 2rem; }

/* 自主产品 */
.product-grid { align-items: stretch; }
.product-card { display: flex; flex-direction: column; }
.product-card .btn, .product-card .card-link { margin-top: auto; padding-top: 0.75rem; }
.product-card-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.2rem; }
.product-mark {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: 4.25rem; height: 4.25rem; border-radius: 14px;
  color: var(--text); font-family: var(--font-mono); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.04em; border: 1px solid var(--border-strong);
  background: linear-gradient(145deg, var(--surface-2), var(--bg));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.025), 0 12px 28px rgba(0,0,0,.28);
}
.product-mark::before {
  content: ''; position: absolute; inset: 10px; border: 1px solid currentColor;
  opacity: .32; transform: rotate(45deg); border-radius: 4px;
}
.product-mark-s3d { color: #50D8E0; border-color: rgba(80,216,224,.36); }
.product-mark-auto { color: #A8D66D; border-color: rgba(168,214,109,.34); }
.product-mark-nwd { color: #F0B66A; border-color: rgba(240,182,106,.36); }
.product-mark-tool { color: var(--teal-200); border-color: var(--teal-700); }
.product-mark-lg { width: 5.5rem; height: 5.5rem; flex-shrink: 0; font-size: 0.88rem; }
.product-hero-row { display: flex; align-items: center; gap: 1.25rem; margin: 0.5rem 0 1rem; }
.product-badge { display: inline-flex; align-items: center; font-family: var(--font-mono); font-size: 0.66rem; color: var(--teal-100); background: var(--teal-10); border: 1px solid var(--teal-700); border-radius: 4px; padding: .2rem .55rem; letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; }
.product-platform { font-size: 0.8rem; color: var(--muted); margin-bottom: 0.75rem; font-family: var(--font-mono); }
.agent-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.agent-card .agent-id { display: inline-block; font-family: var(--font-display); font-size: 1.25rem; color: var(--teal-300); margin-bottom: 0.35rem; }
.agent-card h3 { margin: 0 0 0.5rem; font-size: 1rem; }

.product-tags { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1rem; }
.product-tag {
  font-size: 0.78rem; padding: 0.28rem 0.75rem; border-radius: 999px;
  border: 1px solid var(--border-strong); color: var(--muted); background: var(--surface-2);
}
.product-overview-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.product-overview-card h3 { margin: 0 0 0.5rem; font-size: 1rem; }
.product-overview-card p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.product-overview-icon {
  display: inline-block; font-size: 0.68rem; letter-spacing: 0.12em;
  color: var(--teal-300); margin-bottom: 0.65rem;
}
.product-feature-blocks { display: grid; gap: 1rem; margin-top: 1.25rem; }
.product-feature-block {
  display: flex; gap: 1rem; align-items: flex-start; padding: 1.25rem 1.35rem;
}
.product-feature-num {
  flex-shrink: 0; width: 2.5rem; height: 2.5rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--teal-10); border: 1px solid var(--teal-700); color: var(--teal-300);
  font-size: 0.85rem;
}
.product-feature-block h3 { margin: 0 0 0.35rem; font-size: 1.02rem; }
.product-feature-block p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.product-specs-wrap { padding: 0; overflow: hidden; margin-top: 1.25rem; }
.product-specs-table { width: 100%; border-collapse: collapse; }
.product-specs-table th,
.product-specs-table td {
  padding: 0.85rem 1.15rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top;
}
.product-specs-table tr:last-child th,
.product-specs-table tr:last-child td { border-bottom: none; }
.product-specs-table th { width: 11rem; color: var(--text); font-weight: 600; white-space: nowrap; }
.product-specs-table td { color: var(--muted); }

@media (max-width: 768px) {
  .product-card-head { align-items: flex-start; flex-direction: column; gap: 0.75rem; }
  .product-hero-row { align-items: flex-start; flex-direction: column; }
  .product-mark-lg { width: 4.75rem; height: 4.75rem; }
  .product-specs-table th,
  .product-specs-table td { display: block; width: 100%; }
  .product-specs-table th { padding-bottom: 0.25rem; }
  .product-specs-table td { padding-top: 0; }
}

/* 语言切换 */
.lang-switch-sep { margin: 0 0.5rem; color: var(--border-strong); user-select: none; }
.lang-switch-link { color: var(--muted); font-size: 0.8rem; font-family: var(--font-mono); font-weight: 500; text-decoration: none; transition: color 0.2s; }
.lang-switch-link:hover { color: var(--teal-200); }

/* ===== 内页动效（由 main.js 驱动；首页 .cx 自有动效会跳过） ===== */
/* 滚动渐显：仅当 main.js 给元素加了 .reveal 才隐藏，无 JS 时正常显示 */
.reveal { opacity: 0; transform: translateY(30px) scale(.975); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* page-hero 数据节点网络画布（main.js 注入） */
.page-hero .ph-net { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; pointer-events: none; }

/* 卡片光标跟随高光 */
.card::after, .case-card::after, .solution-block::after {
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0; border-radius: inherit;
  background: radial-gradient(220px circle at var(--mx, 50%) var(--my, 0%), var(--teal-16), transparent 60%);
  transition: opacity .3s var(--ease);
}
.card:hover::after, .case-card:hover::after, .solution-block:hover::after { opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  .page-hero .ph-net { display: none; }
  .page-hero .container > * { animation: none !important; }
}