:root {
  --navy: #0f1b2e;
  --navy-light: #1a2d4d;
  --steel: #5a6a85;
  --silver: #e8eef5;
  --ice: #f5f8fb;
  --accent: #1e4b8f;
  --accent-glow: rgba(30,75,143,0.18);
  --text: #121820;
  --text-sec: #4d5b72;
  --amber: #b07b1e;
  --coral: #a3402a;
  --teal: #0f6e56;
  --border: rgba(30,75,143,0.12);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background: var(--ice);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== NAV ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(30,75,143,0.10);
}
.nav-inner { width: min(1200px, 92vw); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--navy); font-size: 16px; text-decoration: none; }
.nav-brand .m { width: 28px; height: 28px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--text-sec); text-decoration: none; font-size: 14px; font-weight: 600; transition: color .2s; }
.nav-links a:hover { color: var(--accent); }
.nav-links a.cta-link { background: var(--navy); color: #fff; padding: 9px 18px; border-radius: 8px; }
.nav-links a.cta-link:hover { background: var(--accent); color: #fff; }
@media (max-width: 720px) { .nav-links a:not(.cta-link) { display: none; } }

/* ===== HERO ===== */
.hero {
  position: relative; min-height: 88vh; display: flex; align-items: center;
  background:
    radial-gradient(circle at 78% 35%, rgba(30,75,143,0.10) 0%, transparent 45%),
    radial-gradient(circle at 20% 80%, rgba(90,106,133,0.08) 0%, transparent 35%),
    linear-gradient(180deg, #ffffff 0%, #f5f8fb 100%);
  overflow: hidden;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(30,75,143,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(30,75,143,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at 70% 30%, black 0%, transparent 60%);
}
.radar { position: absolute; top: 10%; right: 16%; width: 340px; height: 340px; border-radius: 50%; border: 1px solid rgba(30,75,143,0.10); pointer-events: none; }
.radar::before, .radar::after { content: ''; position: absolute; border-radius: 50%; border: 1px solid rgba(30,75,143,0.08); }
.radar::before { inset: 56px; } .radar::after { inset: 112px; }
.radar-sweep { position: absolute; inset: 0; border-radius: 50%; background: conic-gradient(from 0deg, transparent 0deg, rgba(30,75,143,0.18) 60deg, transparent 70deg); animation: radar 6s linear infinite; }
@keyframes radar { to { transform: rotate(360deg); } }

.hero-inner { position: relative; width: min(1200px, 92vw); margin: 0 auto; display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 24px; }
.eyebrow::before { content:''; width: 24px; height: 2px; background: var(--accent); }
h1 { font-size: clamp(38px, 5vw, 64px); line-height: 1.15; font-weight: 900; color: var(--navy); letter-spacing: -0.02em; }
h1 .gradient { background: linear-gradient(135deg, var(--navy) 0%, var(--accent) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-sub { margin-top: 28px; font-size: 18px; color: var(--text-sec); max-width: 520px; line-height: 1.8; }
.hero-cta { margin-top: 40px; display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 16px 32px; border-radius: 8px; font-size: 15px; font-weight: 700; text-decoration: none; transition: all .25s ease; cursor: pointer; border: none; }
.btn-primary { background: var(--navy); color: #fff; box-shadow: 0 10px 30px rgba(15,27,46,0.25); }
.btn-primary:hover { background: var(--accent); transform: translateY(-2px); box-shadow: 0 16px 40px rgba(30,75,143,0.30); }
.btn-ghost { background: rgba(30,75,143,0.06); color: var(--navy); border: 1px solid rgba(30,75,143,0.15); }
.btn-ghost:hover { background: rgba(30,75,143,0.12); }
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; min-height: 440px; }
.logo-monument { width: 240px; height: 240px; animation: float 8s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0) rotateY(-12deg); } 50% { transform: translateY(-18px) rotateY(-6deg); } }
.logo-monument svg { width: 100%; height: 100%; filter: drop-shadow(0 30px 60px rgba(15,27,46,0.35)); }
.logo-reflection { position: absolute; bottom: -70px; left: 50%; transform: translateX(-50%) scaleY(-0.35); opacity: 0.18; filter: blur(2px); width: 200px; }

/* ===== TRUST ===== */
.trust { background: #fff; border-bottom: 1px solid rgba(30,75,143,0.08); }
.trust-inner { width: min(1200px, 92vw); margin: 0 auto; padding: 40px 0; display: flex; justify-content: space-between; align-items: center; gap: 40px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 14px; }
.trust-num { font-size: 32px; font-weight: 800; color: var(--navy); line-height: 1; }
.trust-label { font-size: 13px; color: var(--text-sec); line-height: 1.4; }

/* ===== SECTIONS ===== */
section { width: min(1200px, 92vw); margin: 0 auto; padding: 100px 0; }
.section-title { font-size: 13px; font-weight: 700; letter-spacing: 0.12em; color: var(--accent); text-transform: uppercase; margin-bottom: 14px; }
h2 { font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; color: var(--navy); line-height: 1.25; margin-bottom: 20px; }
.section-desc { color: var(--text-sec); font-size: 17px; max-width: 660px; margin-bottom: 48px; }

/* ===== HOMEPAGE: 数据错位 highlight ===== */
.gap { background: linear-gradient(180deg, #fff 0%, #f5f8fb 100%); border-top: 1px solid rgba(30,75,143,0.08); border-bottom: 1px solid rgba(30,75,143,0.08); }
.gap-inner { width: min(920px, 92vw); margin: 0 auto; padding: 80px 0; text-align: center; }
.gap-quote { font-size: clamp(20px, 2.6vw, 30px); font-weight: 800; color: var(--navy); line-height: 1.5; }
.gap-quote .hl { color: var(--accent); }
.gap-sub { margin-top: 22px; font-size: 16px; color: var(--text-sec); line-height: 1.9; max-width: 640px; margin-left: auto; margin-right: auto; }

/* ===== HOMEPAGE: product cards ===== */
.products { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.pcard {
  display: block; text-decoration: none; color: inherit;
  background: #fff; border: 1px solid rgba(30,75,143,0.12); border-radius: 18px;
  padding: 36px; transition: all .25s ease; position: relative; overflow: hidden;
}
.pcard:hover { transform: translateY(-6px); box-shadow: 0 24px 50px rgba(15,27,46,0.12); border-color: rgba(30,75,143,0.3); }
.pcard .picon { font-size: 34px; margin-bottom: 18px; display: block; }
.pcard h3 { font-size: 24px; font-weight: 800; color: var(--navy); margin-bottom: 12px; }
.pcard p { color: var(--text-sec); font-size: 15px; line-height: 1.8; }
.pcard .more { margin-top: 22px; display: inline-flex; align-items: center; gap: 8px; color: var(--accent); font-weight: 700; font-size: 14px; }
.pcard .more::after { content: '→'; transition: transform .2s; }
.pcard:hover .more::after { transform: translateX(5px); }

/* ===== PRODUCT PAGE: narrative blocks ===== */
.narrative { display: flex; flex-direction: column; gap: 22px; max-width: 820px; }
.nblock { background: #fff; border: 1px solid rgba(30,75,143,0.10); border-left-width: 5px; border-radius: 14px; padding: 28px 32px; }
.nblock .ntag { display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: 0.08em; padding: 4px 12px; border-radius: 999px; margin-bottom: 14px; }
.nblock h3 { font-size: 22px; font-weight: 800; color: var(--navy); margin-bottom: 12px; line-height: 1.35; }
.nblock p { color: var(--text-sec); font-size: 16px; line-height: 1.9; }
.nblock .calc { margin-top: 14px; padding: 16px 20px; background: var(--ice); border-radius: 10px; font-size: 15px; color: var(--navy); line-height: 1.9; }
.nblock .calc b { color: var(--coral); }
.nblock .calc .hint { display: block; margin-top: 10px; font-size: 13px; color: var(--amber); font-weight: 600; }
.nblock.pain { border-left-color: var(--coral); }
.nblock.pain .ntag { background: rgba(163,64,42,0.10); color: var(--coral); }
.nblock.cost { border-left-color: var(--amber); }
.nblock.cost .ntag { background: rgba(176,123,30,0.12); color: var(--amber); }
.nblock.benefit { border-left-color: var(--teal); }
.nblock.benefit .ntag { background: rgba(15,110,86,0.10); color: var(--teal); }
.nblock.solution { border-left-color: var(--accent); }
.nblock.solution .ntag { background: rgba(30,75,143,0.10); color: var(--accent); }

/* ===== 选型顾问 (matrix) ===== */
.advisor { display: grid; grid-template-columns: 280px 1fr; gap: 40px; align-items: start; }
.ind-tabs { display: flex; flex-direction: column; gap: 10px; position: sticky; top: 84px; max-height: calc(100vh - 110px); overflow-y: auto; padding-right: 4px; }
.ind-tab { display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-radius: 12px; background: #fff; border: 1px solid rgba(30,75,143,0.10); font-size: 15px; font-weight: 600; color: var(--navy); cursor: pointer; transition: all .2s ease; text-align: left; }
.ind-tab .ico { font-size: 20px; }
.ind-tab:hover { border-color: rgba(30,75,143,0.3); transform: translateX(3px); }
.ind-tab.active { background: var(--navy); color: #fff; border-color: var(--navy); box-shadow: 0 10px 24px rgba(15,27,46,0.20); }
.panel-hint { color: var(--text-sec); padding: 60px 20px; text-align: center; border: 2px dashed rgba(30,75,143,0.15); border-radius: 16px; }
.panel { display: none; }
.panel.show { display: block; animation: fade .4s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.panel-head { margin-bottom: 28px; }
.panel-head h3 { font-size: 24px; font-weight: 800; color: var(--navy); }
.panel-head p { color: var(--text-sec); margin-top: 6px; font-size: 14px; }
.domain-block { margin-bottom: 30px; }
.domain-label { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 800; letter-spacing: 0.08em; color: var(--accent); background: rgba(30,75,143,0.08); padding: 6px 14px; border-radius: 999px; margin-bottom: 16px; }
.domain-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 16px; }
.cap-card { background: #fff; border: 1px solid rgba(30,75,143,0.10); border-radius: 14px; padding: 18px; transition: all .25s ease; }
.cap-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(15,27,46,0.10); border-color: rgba(30,75,143,0.22); }
.cap-card h4 { font-size: 15px; font-weight: 700; color: var(--navy); margin-bottom: 4px; }
.cap-card .desc { font-size: 12.5px; color: var(--text-sec); line-height: 1.6; }

/* ===== PROCESS ===== */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.step { position: relative; padding: 28px; background: linear-gradient(180deg,#fff 0%,#f8fafd 100%); border: 1px solid rgba(30,75,143,0.08); border-radius: 16px; }
.step::after { content:''; position: absolute; top: 50%; right: -28px; width: 28px; height: 1px; background: rgba(30,75,143,0.12); }
.step:last-child::after { display: none; }
.step-num { font-size: 42px; font-weight: 900; color: rgba(30,75,143,0.12); line-height: 1; margin-bottom: 16px; }
.step h4 { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.step p { font-size: 13px; color: var(--text-sec); line-height: 1.7; }

/* ===== CTA ===== */
.cta { background: var(--navy); border-radius: 24px; padding: 80px; text-align: center; position: relative; overflow: hidden; }
.cta::before { content:''; position: absolute; inset: 0; background: radial-gradient(circle at 20% 50%, rgba(30,75,143,0.35) 0%, transparent 45%), radial-gradient(circle at 80% 50%, rgba(90,106,133,0.20) 0%, transparent 45%); }
.cta h2 { color: #fff; position: relative; }
.cta p { color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 36px; position: relative; }
.cta .btn-primary { background: #fff; color: var(--navy); position: relative; }
.cta .btn-primary:hover { background: var(--silver); }

/* ===== MODAL ===== */
.modal-overlay { position: fixed; inset: 0; background: rgba(15,27,46,0.55); backdrop-filter: blur(4px); display: none; place-items: center; z-index: 100; }
.modal-overlay.active { display: grid; }
.modal { background: #fff; border-radius: 20px; width: min(480px, 92vw); padding: 40px; box-shadow: 0 40px 80px rgba(15,27,46,0.30); }
.modal h3 { font-size: 22px; font-weight: 800; color: var(--navy); margin-bottom: 8px; }
.modal p { color: var(--text-sec); font-size: 14px; margin-bottom: 28px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.field input, .field textarea { width: 100%; padding: 12px 14px; border: 1px solid rgba(30,75,143,0.15); border-radius: 10px; font-size: 14px; font-family: inherit; outline: none; transition: border .2s; }
.field input:focus, .field textarea:focus { border-color: var(--accent); }
.field textarea { min-height: 90px; resize: vertical; }
.modal .btn-primary { width: 100%; justify-content: center; }
.qr-modal { text-align: center; }
.qr-modal img { width: 220px; height: 220px; object-fit: contain; border: 1px solid rgba(30,75,143,0.12); border-radius: 12px; margin: 16px auto; display: block; }
.qr-modal .tip { font-size: 13px; color: var(--text-sec); }

footer { background: var(--navy); color: rgba(255,255,255,0.6); text-align: center; padding: 40px 20px; font-size: 13px; }
.ft-bottom { margin-top: 16px; font-size: 12px; color: rgba(255,255,255,0.42); }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-visual { order: -1; min-height: 260px; }
  .logo-monument { width: 170px; height: 170px; }
  .radar { display: none; }
  .products { grid-template-columns: 1fr; }
  .advisor { grid-template-columns: 1fr; }
  .ind-tabs { flex-direction: row; flex-wrap: wrap; position: static; max-height: none; }
  .ind-tab { flex: 1 1 calc(50% - 10px); }
  .process { grid-template-columns: 1fr 1fr; }
  .step::after { display: none; }
  .cta { padding: 48px 28px; }
}
@media (max-width: 560px) {
  .process { grid-template-columns: 1fr; }
  .trust-inner { justify-content: center; }
}

/* ===== HOMEPAGE: AI 转型落地地图 ===== */
.aimap-sec { background: linear-gradient(180deg, #f5f8fb 0%, #ffffff 100%); border-top: 1px solid rgba(30,75,143,0.08); border-bottom: 1px solid rgba(30,75,143,0.08); }
.aimap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.aitem { background: #fff; border: 1px solid rgba(30,75,143,0.12); border-radius: 14px; padding: 22px 20px; transition: all .25s ease; position: relative; }
.aitem:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(15,27,46,0.10); border-color: rgba(30,75,143,0.30); }
.aitem .ai-ic { font-size: 26px; display: block; }
.aitem h4 { font-size: 17px; font-weight: 800; color: var(--navy); margin: 10px 0 8px; }
.aitem p { font-size: 13.5px; color: var(--text-sec); line-height: 1.7; }
.aitem::after { content: ''; position: absolute; top: 18px; right: 18px; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-glow); }

/* ===== HERO: AI 节点环 ===== */
.ai-node { position: absolute; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 5px var(--accent-glow); animation: aipulse 2.4s ease-in-out infinite; }
.ai-node.n1 { top: 8%; left: 30%; }
.ai-node.n2 { top: 20%; right: 18%; animation-delay: .6s; }
.ai-node.n3 { bottom: 22%; left: 18%; animation-delay: 1.2s; }
.ai-node.n4 { bottom: 10%; right: 32%; animation-delay: 1.8s; }
@keyframes aipulse { 0%,100% { transform: scale(1); opacity: .55; } 50% { transform: scale(1.35); opacity: 1; } }
@media (max-width: 900px) { .aimap { grid-template-columns: repeat(2, 1fr); } .ai-node { display: none; } }


/* ===== HOMEPAGE: 案例区三卡 移动端横排紧凑 ===== */
.products-cases { grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 900px) {
  .products-cases { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .products-cases .pcard { padding: 22px 18px; }
  .products-cases .pcard h3 { font-size: 18px; }
  .products-cases .pcard .picon { font-size: 26px; margin-bottom: 12px; }
  .products-cases .pcard p { font-size: 14px; }
}
@media (max-width: 560px) {
  .products-cases { grid-template-columns: 1fr; gap: 16px; }
}



/* ===== AI 日报页 ===== */
.daily-head { text-align: center; margin-bottom: 40px; }
.daily-headline { font-size: 18px; color: var(--text-sec); line-height: 1.8; max-width: 640px; margin: 0 auto 12px; }
.daily-date { display: inline-block; font-size: 13px; font-weight: 700; color: var(--accent); letter-spacing: 0.05em; background: rgba(30,75,143,0.08); padding: 6px 16px; border-radius: 999px; }
.daily-list { display: flex; flex-direction: column; gap: 18px; }
.daily-card {
  background: #fff; border: 1px solid rgba(30,75,143,0.12); border-radius: 16px; padding: 28px 30px;
  transition: all .25s ease;
}
.daily-card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(15,27,46,0.10); border-color: rgba(30,75,143,0.25); }
.daily-tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--teal); background: rgba(15,110,86,0.10); padding: 4px 12px; border-radius: 999px; margin-bottom: 12px; }
.daily-card h3 { font-size: 20px; font-weight: 800; color: var(--navy); margin-bottom: 10px; line-height: 1.4; }
.daily-card p { color: var(--text-sec); font-size: 15px; line-height: 1.8; }
.daily-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 16px; }
.daily-src { font-size: 12.5px; color: #9aa0a6; }
.daily-link { font-size: 14px; font-weight: 700; color: var(--accent); text-decoration: none; }
.daily-link:hover { text-decoration: underline; }

/* ===== 客户 logo 墙 ===== */
.logo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.logo-grid.logo-compact .logo-card { padding: 20px 16px; }
.logo-grid.logo-compact .logo-mark { width: 56px; height: 56px; border-radius: 14px; font-size: 22px; }
.logo-grid.logo-compact .logo-name { font-size: 15px; }
.logo-grid.logo-compact .logo-desc { font-size: 12.5px; }
.logo-card { border: 1px solid var(--border); border-radius: 16px; background: #fff; padding: 26px 20px; text-align: center; display: flex; flex-direction: column; align-items: center; transition: box-shadow .2s ease, transform .2s ease; }
.logo-card:hover { box-shadow: 0 16px 40px rgba(15,27,46,.10); transform: translateY(-3px); }
.logo-mark { width: 64px; height: 64px; border-radius: 16px; background: linear-gradient(135deg,#1e4b8f,#3a5a85); color: #fff; font-size: 26px; font-weight: 800; display: flex; align-items: center; justify-content: center; position: relative; margin-bottom: 14px; }
.logo-dot { position: absolute; right: -4px; bottom: -4px; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); border: 3px solid #fff; }
.logo-name { font-size: 16px; font-weight: 800; color: var(--navy); margin-bottom: 4px; }
.logo-line { font-size: 11.5px; color: var(--text-sec); letter-spacing: .04em; margin-bottom: 10px; }
.logo-desc { font-size: 13px; color: var(--text-sec); line-height: 1.65; }
.logo-card a.logo-link { margin-top: 12px; font-size: 13px; font-weight: 700; color: var(--accent); text-decoration: none; }
.logo-card a.logo-link:hover { text-decoration: underline; }
@media (max-width: 760px) { .logo-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } .logo-card { padding: 18px 12px; } }
@media (max-width: 560px) { .logo-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; } .logo-mark { width: 48px; height: 48px; font-size: 18px; } .logo-name { font-size: 13px; } .logo-desc { font-size: 11px; } }