/* ============ OPCN 全站样式（原生 CSS） ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: #33406B;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; background: none; border: none; }

.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed; left: 0; right: 0; top: 0; z-index: 50;
  background: rgba(255,255,255,.7);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  transition: all .3s;
}
.navbar.scrolled, .navbar.open {
  background: rgba(255,255,255,.92);
  box-shadow: 0 2px 20px rgba(15,40,105,.08);
}
.navbar-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, #2B7FFF, #0B5BDB);
  box-shadow: 0 4px 10px rgba(59,130,246,.3);
}
.logo-icon svg { width: 20px; height: 20px; }
.logo-text { font-size: 22px; font-weight: 800; letter-spacing: .05em; color: #0B1B3F; }
.logo.dark .logo-text { color: #fff; }

.nav-links { display: none; align-items: center; gap: 32px; margin-left: auto; margin-right: 40px; }
.nav-link { position: relative; padding: 8px 0; font-size: 15px; font-weight: 500; color: #33406B; transition: color .2s; }
.nav-link:hover { color: #1B6CEF; }
.nav-link.active { font-weight: 600; color: #1B6CEF; }
.nav-link.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 3px; border-radius: 999px; background: #1B6CEF;
}
.nav-right { display: flex; align-items: center; gap: 12px; }
.btn-join {
  border-radius: 999px; background: #1B6CEF; color: #fff;
  padding: 10px 24px; font-size: 15px; font-weight: 600;
  box-shadow: 0 10px 15px -3px rgba(59,130,246,.3);
  transition: all .25s;
}
.btn-join:hover { transform: translateY(-2px); background: #0B5BDB; }
.burger {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  width: 40px; height: 40px; border-radius: 8px; border: 1px solid #e2e8f0;
}
.burger span { display: block; width: 20px; height: 2px; background: #0B1B3F; transition: all .25s; }
.navbar.open .burger span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.navbar.open .burger span:nth-child(2) { opacity: 0; }
.navbar.open .burger span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
.mobile-menu { display: none; border-top: 1px solid #f1f5f9; background: #fff; padding: 16px 24px; }
.navbar.open .mobile-menu { display: block; }
.mobile-menu a { display: block; border-radius: 8px; padding: 12px; font-size: 15px; font-weight: 500; color: #33406B; }
.mobile-menu a.active { background: #eff6ff; color: #1B6CEF; }
@media (min-width: 1024px) {
  .nav-links { display: flex; }
  .burger { display: none; }
  .mobile-menu { display: none !important; }
}

/* ---------- 通用组件 ---------- */
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  border-radius: 999px; border: 1px solid #dbeafe; background: rgba(255,255,255,.8);
  padding: 6px 16px; font-size: 14px; font-weight: 500; color: #1B6CEF;
  box-shadow: 0 1px 2px rgba(15,40,105,.06);
}
.pill::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: #1B6CEF; }

.tag {
  display: inline-block; border-radius: 999px; padding: 6px 14px;
  font-size: 12.5px; font-weight: 500; background: #EEF4FF; color: #1B6CEF;
}
.tag.teal { background: #E6FAF3; color: #0CA678; }
.tag.purple { background: #F3EEFF; color: #7C3AED; }
.tag.orange { background: #FFF3E8; color: #F76707; }
.tag.gray { background: #f1f5f9; color: #5A6A92; }

.heat {
  display: inline-flex; align-items: center; gap: 6px;
  border-radius: 999px; padding: 4px 12px; font-size: 12.5px; font-weight: 600;
}
.heat::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.heat.active { background: #EEF4FF; color: #1B6CEF; }
.heat.focus { background: #FFF3E8; color: #F76707; }
.heat.grow { background: #E6FAF3; color: #0CA678; }

.card {
  border-radius: 24px; border: 1px solid #f1f5f9; background: #fff;
  box-shadow: 0 8px 30px -12px rgba(20,60,140,.10);
  transition: all .3s;
}
.card.hoverable:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 50px -16px rgba(20,60,140,.22);
}

.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.section-head .sh-left { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; }
.section-head h2 { font-size: 28px; font-weight: 800; letter-spacing: -.025em; color: #0B1B3F; }
.section-head .sub { max-width: 560px; font-size: 15px; color: #8B98B8; }
.section-head .more {
  display: none; align-items: center; gap: 6px; flex-shrink: 0;
  font-size: 15px; font-weight: 600; color: #1B6CEF;
}
.section-head .more .arr { transition: transform .2s; display: inline-block; }
.section-head .more:hover .arr { transform: translateX(4px); }
@media (min-width: 640px) { .section-head .more { display: inline-flex; } }
@media (min-width: 768px) { .section-head h2 { font-size: 30px; } }

.arrow-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: #1B6CEF; }
.arrow-link .arr { transition: transform .2s; display: inline-block; }
.arrow-link:hover .arr { transform: translateX(4px); }

.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  border-radius: 12px; background: #1B6CEF; color: #fff;
  padding: 14px 32px; font-size: 16px; font-weight: 600;
  box-shadow: 0 20px 25px -5px rgba(59,130,246,.3);
  transition: all .25s;
}
.btn-primary:hover { transform: translateY(-2px); background: #0B5BDB; }
.btn-primary .arr { transition: transform .2s; display: inline-block; }
.btn-primary:hover .arr { transform: translateX(4px); }
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  border-radius: 12px; border: 1px solid #C7DAF8; background: rgba(255,255,255,.7);
  color: #1B6CEF; padding: 14px 32px; font-size: 16px; font-weight: 600;
  backdrop-filter: blur(8px); transition: all .25s;
}
.btn-outline:hover { transform: translateY(-2px); border-color: #1B6CEF; background: #fff; }
.btn-outline.solid { background: #fff; }

/* ---------- 子页面首屏 ---------- */
.page-hero {
  position: relative; overflow: hidden;
  padding: 152px 0 64px;
  background: linear-gradient(to bottom, #EAF3FF, #F4F9FF 55%, #fff);
}
.page-hero::after {
  content: ''; position: absolute; top: -160px; right: -10%;
  width: 680px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(64,140,255,.15), transparent 65%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 {
  margin-top: 24px; font-size: 36px; font-weight: 900;
  line-height: 1.25; letter-spacing: -.025em; color: #0B1B3F;
}
.page-hero h1 .blue { color: #1B6CEF; }
.page-hero .desc { margin-top: 20px; max-width: 680px; font-size: 16px; line-height: 2; color: #5A6A92; }
.page-hero .hero-extra { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 10px; }
@media (min-width: 768px) { .page-hero h1 { font-size: 48px; } }

/* ---------- 选项卡 ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 10px; }
.tab-btn {
  border-radius: 999px; padding: 10px 20px; font-size: 14px; font-weight: 600;
  border: 1px solid #e2e8f0; background: #fff; color: #33406B; transition: all .2s;
}
.tab-btn:hover { border-color: #1B6CEF; color: #1B6CEF; }
.tab-btn.active {
  background: #1B6CEF; color: #fff; border-color: #1B6CEF;
  box-shadow: 0 10px 15px -3px rgba(59,130,246,.3);
}

/* ---------- 底部 CTA ---------- */
.cta { padding: 32px 0 96px; }
.cta-card {
  position: relative; overflow: hidden; border-radius: 32px;
  background: linear-gradient(135deg, #0B5BDB, #1B6CEF 50%, #3D8BFF);
  padding: 64px 32px; text-align: center; color: #fff;
  box-shadow: 0 32px 80px -24px rgba(20,80,200,.5);
}
.cta-card::before, .cta-card::after {
  content: ''; position: absolute; border-radius: 50%;
  background: rgba(255,255,255,.1); filter: blur(40px);
}
.cta-card::before { width: 288px; height: 288px; left: -96px; top: -96px; }
.cta-card::after { width: 320px; height: 320px; right: -64px; bottom: -112px; }
.cta-card h2 { position: relative; font-size: 30px; font-weight: 900; line-height: 1.4; letter-spacing: -.025em; }
.cta-card p { position: relative; margin: 20px auto 0; max-width: 560px; font-size: 16px; line-height: 2; color: rgba(255,255,255,.85); }
.cta-actions { position: relative; margin-top: 36px; display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 16px; }
.cta-btn-white {
  border-radius: 12px; background: #fff; color: #1B6CEF;
  padding: 14px 32px; font-size: 16px; font-weight: 700;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,.15); transition: all .25s;
}
.cta-btn-white:hover { transform: translateY(-2px); }
.cta-btn-ghost {
  border-radius: 12px; border: 1px solid rgba(255,255,255,.4); color: #fff;
  padding: 14px 32px; font-size: 16px; font-weight: 600; transition: all .25s;
}
.cta-btn-ghost:hover { transform: translateY(-2px); background: rgba(255,255,255,.1); }
@media (min-width: 768px) { .cta-card { padding: 80px 32px; } .cta-card h2 { font-size: 40px; } }

/* ---------- 页脚 ---------- */
.footer { background: #0B1B3F; color: #fff; }
.footer-grid { display: grid; gap: 48px; padding: 64px 0; }
.footer-brand .slogan-en { margin-top: 8px; font-size: 13px; font-weight: 500; letter-spacing: .05em; color: rgba(255,255,255,.45); }
.footer-brand .desc { margin-top: 16px; font-size: 14px; line-height: 1.75; color: rgba(255,255,255,.6); }
.footer-brand .slogan { margin-top: 12px; font-size: 15px; font-weight: 600; color: rgba(255,255,255,.85); }
.footer-groups { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.footer-group h4 { font-size: 14px; font-weight: 700; color: rgba(255,255,255,.9); }
.footer-group ul { margin-top: 16px; list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-group a { font-size: 13.5px; color: rgba(255,255,255,.55); transition: color .2s; }
.footer-group a:hover { color: #fff; }
.footer-node {
  border-radius: 16px; border: 1px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.05); padding: 20px; height: fit-content;
}
.footer-node .n-label { font-size: 13px; color: rgba(255,255,255,.45); }
.footer-node .n-city { margin-top: 8px; font-size: 17px; font-weight: 700; }
.footer-node .n-en { margin-top: 4px; font-size: 13px; font-weight: 600; letter-spacing: .05em; color: #6FA8FF; }
.footer-node .n-org { margin-top: 12px; font-size: 13px; color: rgba(255,255,255,.55); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); }
.footer-bottom-inner {
  display: flex; flex-direction: column; align-items: center; justify-content: space-between;
  gap: 12px; padding: 24px 0; font-size: 13px; color: rgba(255,255,255,.4);
}
@media (min-width: 640px) { .footer-bottom-inner { flex-direction: row; } .footer-groups { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 1.3fr 2fr 1fr; } }

/* ============ 首页 ============ */
.hero { position: relative; overflow: hidden; padding-top: 72px; background: linear-gradient(to bottom, #EAF3FF, #F4F9FF 50%, #fff); }
.hero-blob {
  position: absolute; top: -160px; right: -10%; width: 720px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(64,140,255,.16), transparent 65%); pointer-events: none;
}
.hero-img-wrap { position: absolute; top: 0; bottom: 0; right: 0; width: 62%; display: none; pointer-events: none; }
.hero-img-wrap img {
  height: 100%; width: 100%; object-fit: cover; object-position: bottom; opacity: .95;
  -webkit-mask-image: linear-gradient(to right, transparent, black 28%), linear-gradient(to top, transparent 2%, black 30%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to right, transparent, black 28%), linear-gradient(to top, transparent 2%, black 30%);
  mask-composite: intersect;
}
.hero-content { position: relative; display: flex; flex-direction: column; justify-content: center; min-height: 560px; padding: 80px 0; }
.hero-content h1 {
  margin-top: 28px; font-size: 40px; font-weight: 900;
  line-height: 1.18; letter-spacing: -.025em; color: #0B1B3F;
}
.hero-content h1 .blue { color: #1B6CEF; }
.hero-content .pill { align-self: flex-start; }
.hero-content .lead { margin-top: 24px; max-width: 540px; font-size: 16px; line-height: 2; color: #5A6A92; }
.hero-actions { margin-top: 36px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.hero-actions .arrow-link { font-size: 15px; }
@media (min-width: 768px) {
  .hero-img-wrap { display: block; }
  .hero-content { min-height: 620px; }
  .hero-content h1 { font-size: 52px; white-space: nowrap; }
}
@media (min-width: 1024px) { .hero-content { width: 58%; } }

/* 网络概览 */
.overview { position: relative; z-index: 10; margin-top: -64px; }
.overview-card {
  border-radius: 24px; border: 1px solid #eff6ff; background: rgba(255,255,255,.95);
  padding: 32px; box-shadow: 0 24px 60px -20px rgba(20,60,140,.18);
  backdrop-filter: blur(8px);
}
.stats-grid { margin-top: 32px; display: grid; grid-template-columns: 1fr; }
.stat-item { display: flex; align-items: center; gap: 20px; padding: 20px 16px; border-top: 1px solid #f1f5f9; }
.stat-item img { width: 68px; height: 68px; object-fit: contain; flex-shrink: 0; }
.stat-num { display: flex; align-items: baseline; color: #0B1B3F; }
.stat-num b { font-size: 32px; font-weight: 800; line-height: 1; letter-spacing: -.025em; }
.stat-num span { margin-left: 2px; font-size: 17px; font-weight: 700; }
.stat-label { margin-top: 6px; font-size: 15px; font-weight: 600; color: #0B1B3F; }
.stat-desc { margin-top: 4px; font-size: 12.5px; color: #8B98B8; }
@media (min-width: 640px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item { border-top: none; }
}
@media (min-width: 1024px) {
  .overview-card { padding: 40px; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .stat-item { padding: 20px 16px; border-left: 1px solid #f1f5f9; }
  .stat-item:first-child { border-left: none; padding-left: 0; }
}

/* 首页能力 */
.home-caps { padding: 96px 0 32px; }
.cap-grid { margin-top: 36px; display: grid; grid-template-columns: 1fr; gap: 20px; }
.cap-card { padding: 28px; }
.cap-head { display: flex; align-items: center; gap: 16px; }
.cap-head img { width: 64px; height: 64px; object-fit: contain; flex-shrink: 0; }
.cap-head h3 { font-size: 18px; font-weight: 700; color: #0B1B3F; }
.cap-count { display: inline-block; margin-top: 4px; font-size: 13px; font-weight: 700; }
.cap-card > p { margin-top: 16px; font-size: 14px; line-height: 1.75; color: #5A6A92; }
.cap-tags { margin-top: 20px; padding-top: 16px; border-top: 1px dashed #e2e8f0; display: flex; flex-wrap: wrap; gap: 8px; }
.more-caps {
  margin-top: 24px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  border-radius: 24px; border: 1px dashed #bfdbfe; background: #F7FAFF; padding: 20px 28px;
}
.more-caps .label { margin-right: 8px; font-size: 13.5px; font-weight: 600; color: #8B98B8; }
.c-blue { color: #1B6CEF; } .c-teal { color: #0CA678; } .c-purple { color: #7C3AED; } .c-orange { color: #F76707; }
@media (min-width: 768px) { .cap-grid { grid-template-columns: repeat(2, 1fr); } }

/* 首页成果 */
.section-block { padding: 80px 0; }
.outcome-grid { margin-top: 36px; display: grid; grid-template-columns: 1fr; gap: 20px; }
.outcome-card { display: block; padding: 28px; }
.outcome-card .o-cat { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: #8B98B8; }
.outcome-card h3 { margin-top: 10px; font-size: 20px; font-weight: 700; line-height: 1.4; color: #0B1B3F; }
.outcome-card > p { margin-top: 12px; font-size: 13.5px; line-height: 1.7; color: #8B98B8; }
.outcome-card .o-tags { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.outcome-card .o-link { margin-top: 24px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: #1B6CEF; }
.outcome-card .o-link .arr { transition: transform .2s; display: inline-block; }
.outcome-card:hover .o-link .arr { transform: translateX(4px); }
@media (min-width: 768px) { .outcome-grid { grid-template-columns: repeat(3, 1fr); } }

/* 城市网络（首页） */
.section-tinted { padding: 80px 0; background: linear-gradient(to bottom, #fff, #F4F9FF 50%, #fff); }
.city-grid { margin-top: 36px; display: grid; grid-template-columns: 1fr; gap: 20px; }
.jinan-card { position: relative; overflow: hidden; border-radius: 24px; border: 1px solid #dbeafe; background: #fff; box-shadow: 0 8px 30px -12px rgba(20,60,140,.12); }
.jinan-card .map-top { position: absolute; left: 0; right: 0; top: 0; height: 160px; }
.jinan-card .map-top img { height: 100%; width: 100%; object-fit: cover; opacity: .7; }
.jinan-card .map-top::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(255,255,255,.3), #fff); }
.jinan-card .body { position: relative; padding: 56px 32px 32px; }
.node-badge {
  display: inline-block; border-radius: 999px; background: #1B6CEF; color: #fff;
  padding: 6px 16px; font-size: 12.5px; font-weight: 600;
  box-shadow: 0 10px 15px -3px rgba(59,130,246,.3);
}
.jinan-card h3 { margin-top: 20px; font-size: 24px; font-weight: 800; color: #0B1B3F; }
.jinan-card .body > p { margin-top: 12px; font-size: 14px; line-height: 1.75; color: #5A6A92; }
.jinan-card .body > p b { color: #1B6CEF; margin: 0 4px; }
.jinan-card .j-tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.jinan-card .arrow-link { margin-top: 24px; font-size: 15px; }
.nation-card {
  display: flex; flex-direction: column; justify-content: space-between;
  border-radius: 24px; border: 1px dashed #bfdbfe; background: rgba(255,255,255,.7); padding: 32px;
}
.nation-card .n-badge { display: inline-block; border-radius: 999px; background: #f1f5f9; padding: 6px 16px; font-size: 12.5px; font-weight: 600; color: #5A6A92; }
.nation-card h3 { margin-top: 20px; font-size: 24px; font-weight: 800; color: #0B1B3F; }
.nation-card p { margin-top: 12px; font-size: 14px; line-height: 1.75; color: #5A6A92; }
.nation-card .n-tags { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 12px; }
.nation-card .arrow-link { margin-top: 32px; font-size: 15px; }
@media (min-width: 1024px) { .city-grid { grid-template-columns: repeat(2, 1fr); } }

/* 机会风向（首页） */
.trend-grid { margin-top: 36px; display: grid; grid-template-columns: 1fr; gap: 20px; }
.trend-card { padding: 24px; }
.trend-card h3 { margin-top: 16px; font-size: 17px; font-weight: 700; color: #0B1B3F; }
.trend-card > p { margin-top: 10px; font-size: 13.5px; line-height: 1.7; color: #8B98B8; }
.trend-reserve { margin-top: 16px; padding-top: 16px; border-top: 1px dashed #e2e8f0; }
.trend-reserve .r-label { font-size: 12px; font-weight: 600; color: #8B98B8; }
.trend-reserve .r-tags { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; }
.trend-links { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; gap: 24px; }
.trend-links .arrow-link { font-size: 15px; }
@media (min-width: 640px) { .trend-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .trend-grid { grid-template-columns: repeat(3, 1fr); } }

/* 资讯（首页横向卡片） */
.hnews-grid { margin-top: 36px; display: grid; grid-template-columns: 1fr; gap: 20px; }
.hnews-card { display: flex; flex-direction: column; padding: 24px; }
.hnews-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.cat-badge { border-radius: 999px; padding: 4px 12px; font-size: 12px; font-weight: 600; }
.cat-badge.policy { background: #EEF4FF; color: #1B6CEF; }
.cat-badge.node { background: #E6FAF3; color: #0CA678; }
.cat-badge.opcn { background: #F3EEFF; color: #7C3AED; }
.hnews-meta time { font-size: 12px; color: #8B98B8; }
.hnews-card h3 { margin-top: 14px; font-size: 15.5px; font-weight: 700; line-height: 1.45; color: #0B1B3F; transition: color .2s; }
.hnews-card:hover h3 { color: #1B6CEF; }
.hnews-card > p {
  margin-top: 10px; font-size: 13px; line-height: 1.7; color: #8B98B8;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.hnews-card .read { margin-top: auto; padding-top: 16px; display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; font-weight: 600; color: #1B6CEF; }
.hnews-card .read .arr { transition: transform .2s; display: inline-block; }
.hnews-card:hover .read .arr { transform: translateX(4px); }
.news-note {
  margin-top: 32px; border-radius: 16px; border-left: 4px solid #1B6CEF; background: #fff;
  padding: 16px 24px; font-size: 14.5px; font-weight: 500; color: #33406B;
  box-shadow: 0 1px 2px rgba(15,40,105,.05);
}
@media (min-width: 640px) { .hnews-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .hnews-grid { grid-template-columns: repeat(4, 1fr); } }

/* ============ OPCN能力页 ============ */
.page-section { padding-bottom: 64px; }
.feat-grid { margin-top: 32px; display: grid; grid-template-columns: 1fr; gap: 20px; }
.feat-card { padding: 28px; }
.feat-card h3 { font-size: 19px; font-weight: 700; color: #0B1B3F; }
.field-list { margin-top: 20px; display: flex; flex-direction: column; gap: 12px; font-size: 13.5px; line-height: 1.7; }
.field-row { display: flex; gap: 12px; }
.field-row dt { width: 72px; flex-shrink: 0; font-weight: 600; color: #8B98B8; }
.field-row dd { color: #33406B; }
.feat-foot {
  margin-top: 20px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  border-radius: 16px; background: #F7FAFF; padding: 16px;
}
.avatar-stack { display: flex; align-items: center; gap: 12px; }
.avatar-stack .stack { display: flex; }
.avatar-stack .stack img {
  width: 40px; height: 40px; border-radius: 50%; border: 2px solid #fff;
  object-fit: cover; box-shadow: 0 1px 2px rgba(15,40,105,.08); margin-left: -10px;
}
.avatar-stack .stack img:first-child { margin-left: 0; }
.avatar-stack .count b { font-size: 16px; font-weight: 800; }
.avatar-stack .count span { margin-left: 6px; font-size: 12.5px; font-weight: 500; color: #8B98B8; }
.btn-find {
  border-radius: 999px; border: 1px solid #bfdbfe; padding: 8px 16px;
  font-size: 13px; font-weight: 600; color: #1B6CEF; transition: all .25s;
}
.btn-find:hover { border-color: #1B6CEF; background: #1B6CEF; color: #fff; }
.page-note { margin-top: 32px; font-size: 13.5px; color: #8B98B8; }
@media (min-width: 768px) { .feat-grid { grid-template-columns: repeat(2, 1fr); } }

/* ============ OPCN成果页 ============ */
.ach-section { margin-bottom: 64px; }
.ach-section h2 { font-size: 24px; font-weight: 800; color: #0B1B3F; }
.ach-section .ach-sub { margin-top: 8px; font-size: 15px; color: #8B98B8; }
.case-grid { margin-top: 28px; display: grid; grid-template-columns: 1fr; gap: 20px; }
.case-card { display: flex; flex-direction: column; padding: 28px; }
.case-card .industry { font-size: 12.5px; font-weight: 600; color: #1B6CEF; }
.case-card h3 { margin-top: 8px; font-size: 18px; font-weight: 700; line-height: 1.4; color: #0B1B3F; }
.case-card .field-list { margin-top: 16px; }
.case-card .c-tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.case-foot {
  margin-top: 20px; padding-top: 16px; border-top: 1px dashed #e2e8f0;
  display: flex; align-items: center; justify-content: space-between;
}
.case-foot .cf-label { font-size: 12.5px; font-weight: 600; color: #8B98B8; }
.case-foot .stack { display: flex; }
.case-foot .stack img {
  width: 36px; height: 36px; border-radius: 50%; border: 2px solid #fff;
  object-fit: cover; box-shadow: 0 1px 2px rgba(15,40,105,.08); margin-left: -10px;
}
.case-foot .stack img:first-child { margin-left: 0; }
.growth-card { padding: 28px; }
.growth-head { display: flex; align-items: center; gap: 16px; }
.growth-head img { width: 56px; height: 56px; border-radius: 50%; border: 2px solid #eff6ff; object-fit: cover; box-shadow: 0 1px 2px rgba(15,40,105,.08); }
.growth-head h3 { font-size: 18px; font-weight: 700; color: #0B1B3F; }
.growth-card .field-list { margin-top: 20px; }
.src-link { margin-top: 20px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: #1B6CEF; }
.src-link:hover { text-decoration: underline; }
.action-card h3 { font-size: 18px; font-weight: 700; color: #0B1B3F; }
.action-card .members { margin-top: 6px; font-size: 13px; font-weight: 500; color: #1B6CEF; }
.action-card .field-list { margin-top: 16px; }
@media (min-width: 1024px) {
  .case-grid.cols3 { grid-template-columns: repeat(3, 1fr); }
  .case-grid.cols2 { grid-template-columns: repeat(2, 1fr); }
}

/* ============ 城市网络页 ============ */
.net-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
.net-jinan { border-radius: 24px; border: 1px solid #dbeafe; background: #fff; padding: 32px; box-shadow: 0 8px 30px -12px rgba(20,60,140,.12); }
.net-jinan .nj-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.net-jinan h3 { font-size: 22px; font-weight: 800; color: #0B1B3F; }
.nj-badge { border-radius: 999px; background: #EEF4FF; padding: 6px 14px; font-size: 12.5px; font-weight: 700; color: #1B6CEF; }
.net-stats { margin-top: 24px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.net-stat { border-radius: 16px; background: #F7FAFF; padding: 16px 12px; text-align: center; }
.net-stat b { font-size: 22px; font-weight: 800; color: #0B1B3F; }
.net-stat b span { font-size: 13px; }
.net-stat div { margin-top: 4px; font-size: 12px; font-weight: 500; line-height: 1.35; color: #5A6A92; }
.net-jinan .nj-caps { margin-top: 20px; }
.net-jinan .nj-caps .c-label { font-size: 13px; font-weight: 600; color: #8B98B8; }
.net-jinan .nj-caps .c-tags { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 8px; }
.net-jinan .arrow-link { margin-top: 24px; font-size: 15px; }
.net-new {
  display: flex; flex-direction: column; justify-content: space-between;
  border-radius: 24px; border: 1px dashed #bfdbfe;
  background: linear-gradient(135deg, #fff, #F4F9FF); padding: 32px;
}
.net-new h3 { font-size: 22px; font-weight: 800; color: #0B1B3F; }
.net-new p { margin-top: 12px; font-size: 14px; line-height: 1.75; color: #5A6A92; }
.net-new .n-tags { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 10px; }
.net-new .btn-primary { margin-top: 32px; width: fit-content; font-size: 15px; padding: 12px 28px; }
@media (min-width: 1024px) { .net-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .net-stats { grid-template-columns: repeat(2, 1fr); } }

/* ============ 济南节点页 ============ */
.jn-map-grid { margin-top: 32px; display: grid; grid-template-columns: 1fr; gap: 20px; }
.jn-map {
  position: relative; height: 420px; overflow: hidden; border-radius: 24px;
  border: 1px solid #eff6ff; box-shadow: 0 24px 60px -24px rgba(20,60,140,.25);
}
.jn-map > img { position: absolute; inset: 0; height: 100%; width: 100%; object-fit: cover; }
.jn-map::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(255,255,255,.3), transparent 40%, rgba(255,255,255,.1)); pointer-events: none; }
.pin { position: absolute; transform: translate(-50%, -50%); z-index: 2; }
.pin .pin-label {
  display: block; border-radius: 999px; padding: 4px 12px;
  font-size: 11.5px; font-weight: 600; white-space: nowrap;
  background: rgba(255,255,255,.9); color: #1B6CEF;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,.1); transition: all .2s;
}
.pin:hover .pin-label { background: #1B6CEF; color: #fff; }
.pin .pin-dot { display: block; margin: 4px auto 0; width: 8px; height: 8px; border-radius: 50%; background: rgba(27,108,239,.6); }
.pin.active .pin-label { background: #1B6CEF; color: #fff; transform: scale(1.1); box-shadow: 0 4px 10px rgba(59,130,246,.4); }
.pin.active .pin-dot { background: #1B6CEF; box-shadow: 0 0 0 4px rgba(27,108,239,.25); }
.jn-detail { padding: 28px; }
.jn-detail h3 { margin-top: 16px; font-size: 22px; font-weight: 800; color: #0B1B3F; }
.jn-detail .field-list { margin-top: 20px; gap: 14px; }
.jn-abilities { padding: 48px 0; }
.ability-grid { margin-top: 32px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.ability-card { padding: 24px; text-align: center; }
.ability-card b { font-size: 30px; font-weight: 800; color: #1B6CEF; }
.ability-card .a-label { margin-top: 6px; font-size: 15px; font-weight: 700; color: #0B1B3F; }
.ability-card .a-desc { margin-top: 4px; font-size: 12.5px; color: #8B98B8; }
.jn-duo { display: grid; grid-template-columns: 1fr; gap: 20px; padding: 24px 0; }
.jn-duo .card { padding: 32px; }
.jn-duo h3 { font-size: 20px; font-weight: 800; color: #0B1B3F; }
.jn-duo .d-sub { margin-top: 8px; font-size: 14px; color: #8B98B8; }
.jn-duo .d-tags { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 10px; }
.jn-duo .arrow-link { margin-top: 24px; font-size: 14.5px; }
.jn-quote { padding: 40px 0; }
.jn-quote blockquote {
  border-radius: 24px; border-left: 4px solid #1B6CEF; background: #F7FAFF;
  padding: 24px 32px; font-size: 15.5px; font-weight: 500; line-height: 2; color: #33406B;
}
@media (min-width: 768px) { .jn-map { height: 500px; } }
@media (min-width: 1024px) {
  .jn-map-grid { grid-template-columns: 1.6fr 1fr; }
  .ability-grid { grid-template-columns: repeat(4, 1fr); }
  .jn-duo { grid-template-columns: repeat(2, 1fr); }
}

/* ============ 机会风向页 ============ */
.opp-list { display: flex; flex-direction: column; gap: 20px; padding-bottom: 64px; }
.opp-card { display: grid; grid-template-columns: 1fr; gap: 24px; padding: 32px; }
.opp-card:hover { box-shadow: 0 24px 50px -16px rgba(20,60,140,.2); }
.opp-top { display: flex; align-items: center; gap: 12px; }
.opp-num {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 12px;
  background: #EEF4FF; font-size: 15px; font-weight: 800; color: #1B6CEF;
}
.opp-card h3 { margin-top: 16px; font-size: 21px; font-weight: 800; color: #0B1B3F; }
.opp-reserve { margin-top: 20px; }
.opp-reserve .r-label { font-size: 12.5px; font-weight: 600; color: #8B98B8; }
.opp-reserve .r-tags { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 8px; }
.opp-right { display: flex; flex-direction: column; gap: 16px; }
.opp-right .r-label { font-size: 12.5px; font-weight: 600; color: #8B98B8; }
.opp-right p { margin-top: 6px; font-size: 14.5px; line-height: 1.9; color: #33406B; }
.opp-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; padding-top: 24px; }
.opp-actions .btn-primary, .opp-actions .btn-outline { font-size: 15px; padding: 12px 28px; }
@media (min-width: 1024px) {
  .opp-card { grid-template-columns: 1fr 1.6fr; }
  .opp-right { border-left: 1px dashed #e2e8f0; padding-left: 32px; }
}

/* ============ 资讯页 ============ */
.news-list { display: flex; flex-direction: column; gap: 16px; padding-bottom: 64px; }
.news-item { display: block; padding: 28px; }
.news-item:hover { transform: translateY(-2px); box-shadow: 0 20px 44px -16px rgba(20,60,140,.2); }
.news-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.news-meta time, .news-meta .city { font-size: 12.5px; color: #8B98B8; }
.news-meta .ext { font-size: 12.5px; font-weight: 500; color: #1B6CEF; }
.news-item h3 { margin-top: 12px; font-size: 18px; font-weight: 700; color: #0B1B3F; transition: color .2s; }
.news-item:hover h3 { color: #1B6CEF; }
.news-item > p { margin-top: 8px; max-width: 760px; font-size: 13.5px; line-height: 1.7; color: #8B98B8; }

/* ============ 加入页 ============ */
.benefit-grid { margin-top: 32px; display: grid; grid-template-columns: 1fr; gap: 20px; }
.benefit-card { padding: 28px; }
.benefit-num {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 12px;
  background: #EEF4FF; font-size: 16px; font-weight: 800; color: #1B6CEF;
}
.benefit-card h3 { margin-top: 16px; font-size: 17px; font-weight: 700; color: #0B1B3F; }
.benefit-card p { margin-top: 8px; font-size: 13.5px; line-height: 1.7; color: #8B98B8; }
.form-card {
  margin-top: 56px; border-radius: 32px;
  background: linear-gradient(135deg, #0B5BDB, #1B6CEF 50%, #3D8BFF);
  padding: 56px 32px; text-align: center; color: #fff;
  box-shadow: 0 32px 80px -24px rgba(20,80,200,.5);
}
.form-card h2 { font-size: 26px; font-weight: 900; letter-spacing: -.025em; }
.form-card > p { margin: 16px auto 0; max-width: 520px; font-size: 15px; line-height: 1.9; color: rgba(255,255,255,.85); }
.form-card .cta-btn-white { margin-top: 32px; display: inline-flex; align-items: center; gap: 8px; }
.form-card .cta-btn-white .arr { transition: transform .2s; display: inline-block; }
.form-card .cta-btn-white:hover .arr { transform: translateX(4px); }
.form-card .form-note { margin-top: 16px; font-size: 12.5px; color: rgba(255,255,255,.55); }
.join-section h2 { font-size: 24px; font-weight: 800; color: #0B1B3F; }
@media (min-width: 640px) { .benefit-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .benefit-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 768px) { .form-card h2 { font-size: 32px; } }

/* ============ 成长中心页 ============ */
.growth-card-wrap {
  border-radius: 32px; border: 1px solid #dbeafe;
  background: linear-gradient(135deg, #F0F6FF, #fff);
  padding: 64px 40px; text-align: center;
  box-shadow: 0 24px 60px -24px rgba(20,60,140,.2);
}
.growth-card-wrap h2 { font-size: 24px; font-weight: 800; color: #0B1B3F; }
.growth-card-wrap > p { margin: 16px auto 0; max-width: 560px; font-size: 15px; line-height: 2; color: #5A6A92; }
.growth-card-wrap .btn-primary { margin-top: 32px; }
.growth-card-wrap .g-note { margin-top: 16px; font-size: 12.5px; color: #8B98B8; }
@media (min-width: 768px) { .growth-card-wrap { padding: 64px; } .growth-card-wrap h2 { font-size: 28px; } }