/* ========== 达网网络 · 纯静态版样式（Light） ========== */
:root {
  --bg: #f5f8fc;
  --bg-deep: #edf2f9;
  --panel: rgba(255, 255, 255, 0.78);
  --border: rgba(8, 145, 178, 0.16);
  --cyan: #0891b2;
  --cyan-strong: #0e7490;
  --cyan-bright: #06b6d4;
  --cyan-soft: #155e75;
  --sky: #0284c7;
  --green: #059669;
  --text: #0f172a;
  --text-2: #334155;
  --text-3: #475569;
  --text-4: #64748b;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
  --shadow-panel: 0 8px 30px rgba(15, 60, 90, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: linear-gradient(180deg, #e6eff9 0%, #f3f8fd 38%, #eaf2fa 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
::selection { background: rgba(6, 182, 212, 0.22); }

.mono { font-family: var(--mono); font-feature-settings: "tnum"; }
.cyan { color: var(--cyan); }
.cyan-text { color: var(--cyan); }
.container { max-width: 1520px; margin: 0 auto; padding-left: 1.5rem; padding-right: 1.5rem; }

/* 板块甲板（全宽布局：白卡通栏，仅留细边距） */
.deck {
  max-width: none; margin: 0;
  padding: 72px 16px 0;
  display: flex; flex-direction: column; gap: 16px;
}
footer .deck { padding-top: 0; }
.box {
  background: #ffffff;
  border: 1px solid rgba(13, 71, 110, 0.08);
  border-radius: 18px;
  box-shadow: 0 6px 28px rgba(15, 60, 90, 0.06);
  overflow: hidden;
}
.icon-sm { width: 1rem; height: 1rem; flex-shrink: 0; }

/* 工具：辉光 / 网格 / 玻璃 */
.text-glow { text-shadow: 0 0 24px rgba(6, 182, 212, 0.35), 0 0 64px rgba(6, 182, 212, 0.18); }
.node-glow { box-shadow: 0 0 0 1px rgba(6, 182, 212, 0.3), 0 0 18px rgba(6, 182, 212, 0.28), 0 0 48px rgba(6, 182, 212, 0.14); }
.glass {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.85), rgba(244, 249, 253, 0.9));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-panel);
}

/* ========== 导航栏 ========== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: background 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: rgba(8, 145, 178, 0.12);
  box-shadow: 0 4px 24px rgba(15, 60, 90, 0.06);
}
.nav-inner {
    max-width: none; margin: 0; height: 4.2rem;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.25rem;
}
.brand { display: flex; align-items: center; gap: 1rem; }
.brand-icon {
  width: 3.6rem; height: 3.6rem; display: flex; align-items: center; justify-content: center;
  color: var(--cyan);
}
.brand-icon svg { width: 2rem; height: 2rem; }
.brand-icon img { width: 3.6rem; height: 3.6rem; display: block; }
.brand-name { font-size: 1.8rem; font-weight: 700; letter-spacing: 0.3em; color: var(--text2); }
.brand-name em {
  display: none; margin-left: 0.8rem; font-style: normal;
  font-family: var(--mono); font-size: 14.4px; font-weight: 400;
  letter-spacing: 0; color: rgba(8, 145, 178, 0.7);
}
@media (min-width: 640px) { .brand-name em { display: inline; } }

.nav-links { display: none; align-items: center; gap: 2rem; }
.nav-links a { font-size: 0.875rem; color: var(--text-2); transition: color 0.2s; }
.nav-links a:hover { color: var(--cyan); }
.nav-links .nav-cta {
  border: 1px solid rgba(8, 145, 178, 0.45); border-radius: 0.375rem;
  background: rgba(6, 182, 212, 0.08); color: var(--cyan-strong);
  padding: 0.375rem 1rem; font-weight: 500; transition: all 0.2s;
}
.nav-links .nav-cta:hover { background: rgba(6, 182, 212, 0.16); box-shadow: 0 0 18px rgba(6, 182, 212, 0.25); }
@media (min-width: 768px) { .nav-links { display: flex; } }

.nav-toggle { display: flex; background: none; border: 0; color: var(--text); cursor: pointer; }
.nav-toggle svg { width: 1.5rem; height: 1.5rem; }
.nav-toggle .icon-close { display: none; }
.nav-toggle.open .icon-menu { display: none; }
.nav-toggle.open .icon-close { display: block; }
@media (min-width: 768px) { .nav-toggle { display: none; } }

.nav-mobile { display: none; flex-direction: column; padding: 1rem 1.25rem; border-top: 1px solid rgba(8, 145, 178, 0.12); background: rgba(255, 255, 255, 0.96); }
.nav-mobile.open { display: flex; }
.nav-mobile a { padding: 0.625rem 0; font-size: 0.875rem; color: var(--text-2); }
.nav-mobile a:hover { color: var(--cyan); }

/* ========== 首屏 ========== */
.hero {
  position: relative; min-height: auto;
  display: flex; flex-direction: column; overflow: hidden;
}
.hero-grid-bg, .section-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(2, 132, 199, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(2, 132, 199, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
}
#netCanvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-glow {
  position: absolute; top: -10rem; left: 50%; transform: translateX(-50%);
  width: 820px; height: 480px; border-radius: 9999px;
  background: rgba(6, 182, 212, 0.12); filter: blur(120px); pointer-events: none;
}
.hero-fade {
  position: absolute; left: 0; right: 0; bottom: 0; height: 10rem;
  background: linear-gradient(to top, var(--bg), transparent); pointer-events: none;
}
.hero-content {
  position: relative; z-index: 10; flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  max-width: 80rem; margin: 0 auto; width: 100%;
  padding: 3.5rem 1.25rem 2.5rem; text-align: center;
}
.badge {
  display: flex; align-items: center; gap: 0.625rem;
  border-radius: 9999px; padding: 0.375rem 1rem; margin-bottom: 2rem;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--border);
  box-shadow: 0 4px 18px rgba(15, 60, 90, 0.06);
}
.badge .mono { font-size: 12px; letter-spacing: 0.05em; color: var(--text-2); }
.dot-pulse { position: relative; width: 0.5rem; height: 0.5rem; }
.dot-pulse::before {
  content: ""; position: absolute; inset: 0; border-radius: 9999px;
  background: var(--green); opacity: 0.6; animation: ping 1.6s cubic-bezier(0, 0, 0.2, 1) infinite;
}
.dot-pulse::after {
  content: ""; position: absolute; inset: 0; border-radius: 9999px; background: var(--green);
}
@keyframes ping { 75%, 100% { transform: scale(2.4); opacity: 0; } }

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  font-weight: 700; line-height: 1.2; letter-spacing: 0.02em; color: var(--text);
}
.br-sm { display: inline; }
@media (min-width: 640px) { .br-sm { display: none; } }
.hero-sub { margin-top: 1.5rem; max-width: 42rem; font-size: 1rem; line-height: 1.8; color: var(--text-3); }
@media (min-width: 640px) { .hero-sub { font-size: 1.125rem; } }

.ticker { display: flex; align-items: center; gap: 0.75rem; margin-top: 2rem; font-size: 0.875rem; color: var(--cyan); }
.ticker-label { color: var(--text-4); }
.ticker-window { position: relative; height: 1.5rem; overflow: hidden; text-align: left; }
.ticker-track { display: block; animation: ticker-y 12s ease-in-out infinite; }
.ticker-track span { display: block; height: 1.5rem; line-height: 1.5rem; }
@keyframes ticker-y {
  0%, 20% { transform: translateY(0); }
  25%, 45% { transform: translateY(-1.5rem); }
  50%, 70% { transform: translateY(-3rem); }
  75%, 95% { transform: translateY(-4.5rem); }
  100% { transform: translateY(-6rem); }
}

.hero-actions { margin-top: 2.5rem; display: flex; flex-direction: column; align-items: center; gap: 1rem; }
@media (min-width: 640px) { .hero-actions { flex-direction: row; } }
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border-radius: 0.375rem; background: var(--cyan); color: #ffffff;
  padding: 0.75rem 1.75rem; font-size: 0.875rem; font-weight: 600;
  transition: all 0.25s; border: 0; cursor: pointer;
}
.btn-primary:hover { background: var(--cyan-strong); box-shadow: 0 8px 28px rgba(8, 145, 178, 0.35); }
.btn-primary svg { transition: transform 0.25s; }
.btn-primary:hover svg { transform: translateX(4px); }
.btn-ghost {
  border: 1px solid #cbd5e1; border-radius: 0.375rem; color: var(--text-2);
  padding: 0.75rem 1.75rem; font-size: 0.875rem; font-weight: 600; transition: all 0.25s;
  background: rgba(255, 255, 255, 0.6);
}
.btn-ghost:hover { border-color: rgba(8, 145, 178, 0.55); color: var(--cyan-strong); }

.status-bar {
  margin-top: 3.5rem; width: 100%; max-width: 48rem;
  display: grid; grid-template-columns: repeat(2, 1fr);
  border-radius: 0.75rem; font-size: 12px;
  background: #f2f8fc;
  border: 1px solid rgba(8, 145, 178, 0.14);
}
@media (min-width: 640px) { .status-bar { grid-template-columns: repeat(4, 1fr); } }
.status-item {
  display: flex; flex-direction: column; align-items: center; gap: 0.375rem;
  padding: 1rem 0.75rem; border-left: 1px solid rgba(8, 145, 178, 0.1);
}
.status-item:first-child, .status-item:nth-child(3) { border-left: 0; }
@media (min-width: 640px) { .status-item:nth-child(3) { border-left: 1px solid rgba(8, 145, 178, 0.1); } }
.status-label { display: flex; align-items: center; gap: 0.375rem; font-size: 10px; letter-spacing: 0.1em; color: var(--text-4); }
.status-value { font-size: 1rem; font-weight: 600; color: var(--text); }
.dot { display: inline-block; width: 0.375rem; height: 0.375rem; border-radius: 9999px; }
.dot-green { background: var(--green); }
.dot-cyan { background: var(--cyan-bright); }
.blink { animation: blink-soft 2s ease-in-out infinite; }
@keyframes blink-soft { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.scroll-hint { position: relative; z-index: 10; display: flex; justify-content: center; padding-bottom: 1.5rem; }
.scroll-hint svg { width: 1.25rem; height: 1.25rem; color: rgba(8, 145, 178, 0.55); animation: scroll-hint 1.8s ease-in-out infinite; }
@keyframes scroll-hint { 0%, 100% { transform: translateY(0); opacity: 0.9; } 50% { transform: translateY(8px); opacity: 0.3; } }

/* ========== 区块通用 ========== */
.section-head { text-align: center; margin-bottom: 3.5rem; }
.kicker { font-size: 12px; letter-spacing: 0.3em; color: var(--cyan); }
.section-head h2 { margin-top: 0.75rem; font-size: clamp(1.5rem, 4vw, 2.25rem); font-weight: 700; color: var(--text); }
.section-desc { margin: 1rem auto 0; max-width: 36rem; font-size: 0.875rem; line-height: 1.8; color: var(--text-3); }

.reveal { opacity: 0; }
.reveal.revealed { animation: fade-up 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards; }
@keyframes fade-up { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }

/* ========== 核心服务 ========== */
.services { position: relative; padding: 6rem 0; overflow: hidden; }
@media (min-width: 1024px) { .services { padding: 8rem 0; } }
.section-grid-bg { opacity: 0.7; }
.services-layout { position: relative; display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 1024px) { .services-layout { grid-template-columns: 3fr 2fr; } }

.topology { position: relative; width: 100%; max-width: 560px; margin: 0 auto; aspect-ratio: 1 / 1; }
.topology > svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.topo-link { stroke: rgba(2, 132, 199, 0.25); stroke-width: 0.25; stroke-dasharray: 6 8; animation: dash-flow 1.4s linear infinite; }
.topo-link.active { stroke: rgba(8, 145, 178, 0.85); stroke-width: 0.45; }
@keyframes dash-flow { to { stroke-dashoffset: -28; } }

.hub {
  position: absolute; transform: translate(-50%, -50%);
  display: flex; flex-direction: column; align-items: center; pointer-events: none;
}
.hub-circle {
  width: 5rem; height: 5rem; display: flex; align-items: center; justify-content: center;
  border-radius: 9999px; border: 1px solid rgba(8, 145, 178, 0.5); background: #ffffff; color: var(--cyan);
}
@media (min-width: 640px) { .hub-circle { width: 6rem; height: 6rem; } }
.hub-circle svg { width: 2.25rem; height: 2.25rem; }
@media (min-width: 640px) { .hub-circle svg { width: 2.75rem; height: 2.75rem; } }
.hub-name { margin-top: 0.5rem; white-space: nowrap; font-size: 0.875rem; font-weight: 700; color: var(--text); }
.hub-en { font-size: 10px; letter-spacing: 0.15em; color: rgba(8, 145, 178, 0.7); }

.svc-node {
  position: absolute; transform: translate(-50%, -50%);
  display: flex; flex-direction: column; align-items: center;
  background: none; border: 0; cursor: pointer; font-family: inherit;
}
.svc-circle {
  width: 3.5rem; height: 3.5rem; display: flex; align-items: center; justify-content: center;
  border-radius: 9999px; border: 1px solid rgba(2, 132, 199, 0.3); background: #ffffff;
  color: rgba(2, 132, 199, 0.65); transition: all 0.3s;
  box-shadow: 0 4px 16px rgba(15, 60, 90, 0.07);
}
@media (min-width: 640px) { .svc-circle { width: 4rem; height: 4rem; } }
.svc-circle svg { width: 1.5rem; height: 1.5rem; }
@media (min-width: 640px) { .svc-circle svg { width: 1.75rem; height: 1.75rem; } }
.svc-node:hover .svc-circle { border-color: rgba(8, 145, 178, 0.6); color: var(--cyan); }
.svc-node.active .svc-circle {
  border-color: var(--cyan); background: rgba(6, 182, 212, 0.12); color: var(--cyan-strong);
  transform: scale(1.1);
  box-shadow: 0 0 0 1px rgba(6, 182, 212, 0.3), 0 0 18px rgba(6, 182, 212, 0.28), 0 0 48px rgba(6, 182, 212, 0.14);
}
.svc-label { margin-top: 0.375rem; white-space: nowrap; font-size: 11px; font-weight: 500; color: var(--text-2); transition: color 0.2s; }
@media (min-width: 640px) { .svc-label { font-size: 12px; } }
.svc-node:hover .svc-label { color: var(--cyan-strong); }
.svc-node.active .svc-label { color: var(--cyan-strong); }

.service-detail {
  border-radius: 0.75rem; padding: 1.75rem;
  background: #f6fafd;
  backdrop-filter: none; -webkit-backdrop-filter: none;
  border: 1px solid rgba(8, 145, 178, 0.14);
  box-shadow: none;
}
.sd-head { display: flex; align-items: center; gap: 0.75rem; }
.sd-icon {
  width: 3rem; height: 3rem; display: flex; align-items: center; justify-content: center;
  border-radius: 0.5rem; border: 1px solid rgba(8, 145, 178, 0.35); background: rgba(6, 182, 212, 0.1); color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(6, 182, 212, 0.22), 0 0 18px rgba(6, 182, 212, 0.2);
}
.sd-icon svg { width: 1.5rem; height: 1.5rem; }
.sd-head h3 { font-size: 1.25rem; font-weight: 700; color: var(--text); }
.sd-en { font-family: var(--mono); font-size: 10px; letter-spacing: 0.25em; color: rgba(8, 145, 178, 0.7); }
.sd-desc { margin-top: 1.25rem; font-size: 0.875rem; line-height: 1.8; color: var(--text-2); }
.sd-points { margin-top: 1.25rem; display: flex; flex-direction: column; gap: 0.625rem; }
.sd-points li { display: flex; align-items: flex-start; gap: 0.625rem; font-size: 0.875rem; color: var(--text-2); }
.sd-points svg { width: 1rem; height: 1rem; margin-top: 0.125rem; flex-shrink: 0; color: var(--cyan-bright); }
.sd-cta {
  margin-top: 1.75rem; display: inline-flex; align-items: center; gap: 0.5rem;
  border: 1px solid rgba(8, 145, 178, 0.4); border-radius: 0.375rem; background: rgba(6, 182, 212, 0.08);
  color: var(--cyan-strong); padding: 0.625rem 1.25rem; font-size: 0.875rem; font-weight: 500; transition: all 0.2s;
}
.sd-cta:hover { background: rgba(6, 182, 212, 0.16); }
.sd-dots { margin-top: 1.5rem; display: flex; gap: 0.5rem; }
.sd-dots button { height: 0.25rem; flex: 1; border: 0; border-radius: 9999px; background: #cbd5e1; cursor: pointer; transition: background 0.2s; }
.sd-dots button:hover { background: #94a3b8; }
.sd-dots button.active { background: var(--cyan); }
.service-detail.swap { animation: fade-up 0.45s cubic-bezier(0.22, 1, 0.36, 1); }

/* ========== 网络能力数据 ========== */
.stats { background: #ffffff; padding: 2rem 0; }
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 1024px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } }
.stat-item {
  position: relative; display: flex; flex-direction: column; align-items: center;
  padding: 2.5rem 1rem; text-align: center; border-left: 1px solid rgba(8, 145, 178, 0.08);
}
.stat-item::before {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 0; height: 1px; background: rgba(8, 145, 178, 0.55); transition: width 0.5s;
}
.stat-item:hover::before { width: 75%; }
.stat-num { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; color: var(--text); }
.stat-label { margin-top: 0.75rem; font-size: 0.875rem; font-weight: 500; color: var(--text-2); }
.stat-en { margin-top: 0.25rem; font-size: 10px; letter-spacing: 0.25em; color: var(--text-4); }

/* ========== 交付链路 ========== */
.process { padding: 6rem 0; }
@media (min-width: 1024px) { .process { padding: 8rem 0; } }
.pipeline { position: relative; }
.pipeline-line {
  display: none; position: absolute; left: 0; right: 0; top: 2rem; height: 1px;
  background: linear-gradient(to right, transparent, rgba(8, 145, 178, 0.4), transparent);
}
.pipeline-packet {
  display: none; position: absolute; top: calc(2rem - 2px); left: 0; height: 5px; width: 2.5rem;
  border-radius: 9999px; background: var(--cyan);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.8);
  animation: packet-x 5s linear infinite;
}
@media (min-width: 1024px) { .pipeline-line, .pipeline-packet { display: block; } }
@keyframes packet-x {
  0% { left: 0; opacity: 0; }
  8% { opacity: 1; }
  92% { opacity: 1; }
  100% { left: calc(100% - 2.5rem); opacity: 0; }
}
.pipeline-steps { display: grid; gap: 2.5rem; }
@media (min-width: 640px) { .pipeline-steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .pipeline-steps { grid-template-columns: repeat(5, 1fr); gap: 1rem; } }
.step { position: relative; display: flex; flex-direction: column; align-items: center; text-align: center; }
.step-icon-wrap { position: relative; z-index: 1; margin-bottom: 1.25rem; }
.step-icon {
  width: 4rem; height: 4rem; display: flex; align-items: center; justify-content: center;
  border-radius: 9999px; border: 1px solid rgba(8, 145, 178, 0.35); background: #ffffff; color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(6, 182, 212, 0.22), 0 0 18px rgba(6, 182, 212, 0.2), 0 6px 20px rgba(15, 60, 90, 0.08);
  transition: transform 0.3s;
}
.step:hover .step-icon { transform: scale(1.1); }
.step-icon svg { width: 1.75rem; height: 1.75rem; }
.step-num {
  position: absolute; top: -0.375rem; right: -0.375rem;
  width: 1.5rem; height: 1.5rem; display: flex; align-items: center; justify-content: center;
  border-radius: 9999px; border: 1px solid rgba(8, 145, 178, 0.45); background: #ffffff;
  font-family: var(--mono); font-size: 10px; color: var(--cyan-strong);
}
.step h3 { font-size: 1rem; font-weight: 700; color: var(--text); }
.step-en { margin-top: 0.125rem; font-family: var(--mono); font-size: 10px; letter-spacing: 0.25em; color: rgba(8, 145, 178, 0.6); }
.step-desc { margin-top: 0.75rem; max-width: 220px; font-size: 12px; line-height: 1.7; color: var(--text-3); }

/* ========== 页脚 ========== */
.footer { border-top: 1px solid rgba(8, 145, 178, 0.12); }
.cta {
  position: relative; overflow: hidden; padding: 5rem 0; text-align: center;
  background: linear-gradient(135deg, #e8f7fc 0%, #f3f7fe 55%, #ecf9f3 100%);
}
.cta-glow {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 720px; height: 360px; border-radius: 9999px;
  background: rgba(6, 182, 212, 0.15); filter: blur(110px); pointer-events: none;
}
.cta .container { position: relative; }
.cta h2 { margin-top: 1rem; font-size: clamp(1.5rem, 4vw, 2.25rem); font-weight: 700; line-height: 1.4; color: var(--text); }
.cta-actions { margin-top: 2rem; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1rem; }
@media (min-width: 640px) { .cta-actions { flex-direction: row; } }
.cta-note { font-size: 12px; color: var(--text-4); }

.footer-main { margin-top: 16px; border-top: 1px solid rgba(8, 145, 178, 0.12); background: var(--bg-deep); }
.footer-grid {
  display: grid; gap: 2.5rem; padding-top: 3.5rem; padding-bottom: 3.5rem;
}
@media (min-width: 640px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .footer-grid { grid-template-columns: repeat(5, 1fr); } }
.footer-slogan { margin-top: 1rem; font-size: 12px; line-height: 1.8; color: var(--text-4); }
.footer-title { font-size: 12px; letter-spacing: 0.25em; color: rgba(8, 145, 178, 0.8); }
.footer-grid ul { margin-top: 1rem; display: flex; flex-direction: column; gap: 0.625rem; }
.footer-grid ul a { font-size: 0.875rem; color: var(--text-3); transition: color 0.2s; }
.footer-grid ul a:hover { color: var(--cyan-strong); }
.footer-contact li { display: flex; align-items: center; gap: 0.625rem; font-size: 0.875rem; color: var(--text-3); }
.footer-contact svg { color: rgba(8, 145, 178, 0.7); }
.footer-bottom { border-top: 1px solid rgba(8, 145, 178, 0.08); padding: 1.25rem 0; text-align: center; }
.footer-bottom p { font-size: 11px; color: var(--text-4); }

/* ========== 项目矩阵（vis-network 物理布局） ========== */
.ptree-section { position: relative; padding: 3.5rem 1rem 3rem; }
.ptree-section::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(2, 132, 199, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(2, 132, 199, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
}
.ptree-section::after {
  content: ""; position: absolute; top: 40%; left: 50%; transform: translate(-50%, -50%);
  width: 720px; height: 420px; border-radius: 9999px;
  background: rgba(6, 182, 212, 0.12); filter: blur(120px); pointer-events: none;
}
.ptree-section > * { position: relative; z-index: 1; }
.ptree-stage { position: relative; width: 100%; min-height: 720px; }
@media (max-width: 1023px) { .ptree-stage { min-height: 640px; } }
@media (max-width: 640px) { .ptree-stage { min-height: 540px; } }
.ptree-network { width: 100%; height: 100%; outline: none; }
.ptree-hint {
  position: absolute; right: 1.25rem; bottom: 0.9rem;
  font-size: 10px; letter-spacing: 0.12em; color: var(--text-4);
  pointer-events: none;
}

/* 用户评价滚动条（右下角） */
.ptree-reviews {
    position: absolute; right: 1.1rem; bottom: 0.1rem;
  width: 350px; max-width: 42vw;
  background: linear-gradient(180deg, rgba(255,255,255,0.72), rgba(236,254,255,0.55));
  border: 1px solid rgba(8, 145, 178, 0.18);
  border-radius: 0.6rem;
  box-shadow: 0 6px 20px rgba(8, 145, 178, 0.08);
  padding: 0.45rem 0.65rem 0.5rem;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  pointer-events: none;
  z-index: 4;
}
.ptree-reviews-head {
  font-size: 10px; letter-spacing: 0.14em;
  color: var(--cyan-strong); font-weight: 700;
  margin-bottom: 0.25rem;
}
.ptree-reviews-head::before {
  content: ''; display: inline-block; width: 6px; height: 6px;
  background: #06b6d4; border-radius: 50%; margin-right: 0.4rem;
  vertical-align: middle;
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.18);
}
.ptree-reviews-viewport {
  height: calc(1.7em * 2.5);
  overflow: hidden;
  scroll-behavior: smooth;
  mask-image: linear-gradient(180deg, transparent 0, #000 18%, #000 82%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 18%, #000 82%, transparent 100%);
}
.ptree-reviews-list {
  margin: 0; padding: 0; list-style: none;
}
.ptree-reviews-list li {
  height: 1.7em; line-height: 1.7em;
  font-size: 12px; color: var(--text-2);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
@media (max-width: 640px) {
  .ptree-reviews { width: 240px; bottom: 2rem; right: 0.6rem; }
  .ptree-reviews-list li { font-size: 11px; }
}

/* ========== 富节点卡片（HTML 覆盖层） ========== */
.ptree-overlay {
  position: absolute; inset: 0; z-index: 3;
  pointer-events: none;
}
.pt-card {
  position: absolute; transform: translate(-50%, -50%);
  width: 196px; padding: 0.75rem 0.85rem 0.65rem;
  background: #ffffff;
  border: 1px solid rgba(8, 145, 178, 0.35); border-radius: 0.75rem;
  box-shadow: 0 8px 26px rgba(15, 60, 90, 0.12);
  cursor: pointer; pointer-events: auto;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
  animation: pt-fade-in 0.6s both;
}
@keyframes pt-fade-in { from { opacity: 0; } to { opacity: 1; } }
.pt-card.dragging {
  cursor: grabbing;
  transition: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(6, 182, 212, 0.35), 0 18px 42px rgba(15, 60, 90, 0.2);
  z-index: 6;
}
.pt-card:hover {
  border-color: var(--cyan); transform: translate(-50%, -50%) translateY(-3px);
  box-shadow: 0 0 0 1px rgba(6, 182, 212, 0.3), 0 16px 36px rgba(15, 60, 90, 0.18);
}
.pt-card-title {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.875rem; font-weight: 700; color: var(--text);
}
.pt-card-title::before {
  content: ""; width: 0.45rem; height: 0.45rem; border-radius: 9999px;
  background: var(--cyan-bright); box-shadow: 0 0 8px rgba(6, 182, 212, 0.7); flex-shrink: 0;
}
.pt-card-img { margin-top: 0.55rem; border-radius: 0.5rem; overflow: hidden; border: 1px solid rgba(8, 145, 178, 0.15); }
.pt-card-img img { display: block; width: 100%; height: auto; }
.pt-card-desc {
  margin-top: 0.55rem; font-size: 0.72rem; line-height: 1.6; color: var(--text-3);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.pt-card-more {
  margin-top: 0.5rem; font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.05em; color: var(--cyan); text-align: right;
}

/* ========== 业务操作模态框 ========== */
.ptm { position: fixed; inset: 0; z-index: 100; display: none; }
.ptm.show { display: block; }
.ptm-backdrop {
  position: absolute; inset: 0;
  background: rgba(8, 25, 47, 0.42);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  animation: ptm-fade 0.25s both;
}
.ptm-dialog {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: min(1134px, calc(100vw - 2.5rem));
  background: #ffffff; border: 1px solid rgba(8, 145, 178, 0.2);
  border-radius: 1rem; box-shadow: 0 30px 80px rgba(8, 25, 47, 0.25);
  padding: 1.75rem;
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  animation: ptm-pop 0.3s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.ptm-dialog.wide { width: min(1134px, calc(100vw - 2.5rem)); }
.ptm-desc .ptm-pricing {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 0.65rem; margin: 0.5rem 0 1rem;
}
.ptm-desc .ptm-price-box {
  padding: 0.85rem 0.9rem;
  border-radius: 0.65rem;
  border: 1px solid rgba(8, 145, 178, 0.25);
  background: #f6fafd;
  display: flex; flex-direction: column; justify-content: space-between;
  min-height: 6.5rem;
}
.ptm-desc .ptm-price-box-primary {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.14), rgba(8, 145, 178, 0.08));
  border-color: rgba(6, 182, 212, 0.45);
  box-shadow: 0 6px 18px rgba(15, 60, 90, 0.08);
}
.ptm-desc .ptm-price-title {
  margin: 0 0 0.5rem;
  font-size: 0.78rem; font-weight: 600; line-height: 1.55; color: var(--text-2);
}
.ptm-desc .ptm-price-amount {
  margin: 0; font-family: var(--mono); color: var(--cyan-strong);
  display: flex; align-items: baseline; gap: 0.15rem;
}
.ptm-desc .ptm-price-num { font-size: 1.6rem; font-weight: 700; }
.ptm-desc .ptm-price-unit { font-size: 0.8rem; font-weight: 600; color: var(--cyan); }
.ptm-desc .ptm-price-note {
  margin: 0.55rem 0 0;
  font-size: 0.72rem; line-height: 1.65; color: var(--text-3);
  padding-top: 0.5rem;
  border-top: 1px dashed rgba(8, 145, 178, 0.28);
}
@media (max-width: 520px) {
  .ptm-desc .ptm-pricing { grid-template-columns: 1fr; }
}
.ptm-desc .ptm-pricing-single { grid-template-columns: minmax(0, 360px); justify-content: center; }
.ptm-desc .ptm-lead-plain {
  margin: 0.4rem 0 0.9rem;
  font-size: 0.85rem; line-height: 1.8; color: var(--text-3);
}
.ptm-desc .ptm-tags {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 1rem;
}
.ptm-desc .ptm-tag {
  padding: 0.45rem 0.8rem;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(8, 145, 178, 0.25);
  border-radius: 8px;
  font-size: 0.78rem; color: var(--text-2);
  white-space: nowrap;
}
.ptm-desc .ptm-lead {
  margin: 0.4rem 0 0.9rem;
  font-size: 0.95rem; font-weight: 600; color: var(--text);
}
.ptm-desc .ptm-block {
  margin: 0.55rem 0;
  padding: 0.7rem 0.9rem;
  border-left: 3px solid rgba(8, 145, 178, 0.35);
  background: rgba(6, 182, 212, 0.04);
  border-radius: 0 0.5rem 0.5rem 0;
}
.ptm-desc .ptm-block-title {
  margin: 0 0 0.35rem;
  font-size: 0.85rem; font-weight: 600; color: var(--cyan-strong);
}
.ptm-desc .ptm-block-title::before { content: "› "; color: var(--cyan); font-weight: 700; }
.ptm-desc .ptm-block-body {
  margin: 0; font-size: 0.8rem; line-height: 1.75; color: var(--text-3);
}
.ptm-desc .ptm-solution {
  margin-top: 1rem; padding: 0.9rem 1rem;
  border-radius: 0.6rem;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(8, 145, 178, 0.06));
  border: 1px solid rgba(8, 145, 178, 0.25);
}
.ptm-desc .ptm-solution-title {
  margin: 0 0 0.35rem;
  font-size: 0.9rem; font-weight: 700; color: var(--cyan-strong);
}
.ptm-desc .ptm-solution-body {
  margin: 0; font-size: 0.8rem; line-height: 1.8; color: var(--text-2);
}
.ptm-desc .ptm-table {
  width: 100%; margin: 0.6rem 0 1rem;
  border-collapse: collapse;
  font-size: 0.82rem; line-height: 1.7; color: var(--text-2);
  background: rgba(6, 182, 212, 0.02);
  border: 1px solid rgba(8, 145, 178, 0.18);
  border-radius: 0.55rem;
  overflow: hidden;
}
.ptm-desc .ptm-table th,
.ptm-desc .ptm-table td {
  padding: 0.65rem 0.85rem;
  border: 1px solid rgba(8, 145, 178, 0.14);
  vertical-align: top; text-align: left;
}
.ptm-desc .ptm-table thead th {
  background: rgba(8, 145, 178, 0.09);
  color: var(--cyan-strong); font-weight: 700;
  font-size: 0.8rem; letter-spacing: 0.02em;
}
.ptm-desc .ptm-table tbody th {
  background: rgba(6, 182, 212, 0.06);
  color: var(--cyan-strong); font-weight: 600;
  white-space: nowrap;
  width: 8.5rem;
}
.ptm-desc .ptm-table tbody tr:hover td,
.ptm-desc .ptm-table tbody tr:hover th { background: rgba(6, 182, 212, 0.05); }
.ptm-desc .ptm-table .ptm-price { color: var(--cyan-strong); font-weight: 600; }
.ptm-desc .ptm-table .ptm-lighttext { color: var(--text-3); font-size: 0.75rem; }
.ptm-desc .ptm-table-note {
  margin: -0.3rem 0 1rem; font-size: 0.78rem; color: var(--text-3);
}
@keyframes ptm-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes ptm-pop {
  from { opacity: 0; transform: translate(-50%, -46%) scale(0.96); }
  to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}
.ptm-close {
  position: absolute; top: 0.9rem; right: 0.9rem;
  width: 1.9rem; height: 1.9rem; border: 0; border-radius: 9999px;
  background: #f1f5f9; color: var(--text-3); font-size: 1.1rem; line-height: 1;
  cursor: pointer; transition: all 0.2s;
}
.ptm-close:hover { background: rgba(6, 182, 212, 0.12); color: var(--cyan-strong); }
.ptm-kicker { font-size: 10px; letter-spacing: 0.28em; color: var(--cyan); }
.ptm-dialog h3 { margin-top: 0.5rem; font-size: 1.35rem; font-weight: 700; color: var(--text); }
.ptm-desc { margin-top: 0.65rem; font-size: 0.85rem; line-height: 1.8; color: var(--text-3); }
.ptm-actions { margin-top: 1.4rem; display: flex; flex-direction: column; gap: 0.6rem; }
.ptm-action {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1rem; border-radius: 0.625rem;
  border: 1px solid rgba(8, 145, 178, 0.22); background: #f6fafd;
  font-size: 0.875rem; font-weight: 500; color: var(--text-2);
  cursor: pointer; transition: all 0.2s; font-family: inherit;
}
.ptm-action::after { content: "›"; font-size: 1rem; color: var(--cyan); transition: transform 0.2s; }
.ptm-action:hover {
  border-color: var(--cyan); background: rgba(6, 182, 212, 0.08); color: var(--cyan-strong);
  box-shadow: 0 4px 14px rgba(15, 60, 90, 0.08);
}
.ptm-action:hover::after { transform: translateX(3px); }
.ptm-note { margin-top: 1.1rem; font-family: var(--mono); font-size: 10px; color: var(--text-4); letter-spacing: 0.08em; }

/* ========== 业务网站链接卡片 ========== */
.ptm-link {
  display: flex; align-items: center; gap: 0.85rem;
  padding: 1rem; border-radius: 0.75rem;
  border: 1px solid rgba(8, 145, 178, 0.2);
  background: #f6fafd;
  cursor: pointer; transition: all 0.25s;
  text-decoration: none; color: inherit;
}
.ptm-link:hover {
  border-color: var(--cyan);
  background: rgba(6, 182, 212, 0.08);
  box-shadow: 0 0 0 1px rgba(6, 182, 212, 0.2), 0 6px 20px rgba(15, 60, 90, 0.1);
  transform: translateY(-2px);
}
.ptm-link-icon {
  width: 2.5rem; height: 2.5rem; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 0.5rem;
  background: rgba(6, 182, 212, 0.1);
  color: var(--cyan);
  border: 1px solid rgba(8, 145, 178, 0.25);
}
.ptm-link-icon svg { width: 1.25rem; height: 1.25rem; }
.ptm-link-body { flex: 1; min-width: 0; }
.ptm-link-name { display: block; font-size: 0.875rem; font-weight: 600; color: var(--text); }
.ptm-link-desc { display: block; margin-top: 0.15rem; font-size: 0.75rem; color: var(--text-4); line-height: 1.5; }
.ptm-link-arrow {
  width: 1.5rem; height: 1.5rem; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan); opacity: 0.6; transition: all 0.2s;
}
.ptm-link:hover .ptm-link-arrow { opacity: 1; transform: translateX(3px) translateY(-2px); }
.ptm-link-arrow svg { width: 1rem; height: 1rem; }
.ptm-link-static { cursor: default; }
.ptm-link-static:hover { transform: none; background: rgba(6, 182, 212, 0.03); border-color: rgba(8, 145, 178, 0.25); }

/* 包月员工弹窗：角色块（头部行 + 说明行） */
.ptm-role { margin-bottom: 1.1rem; }
.ptm-role:last-child { margin-bottom: 0; }
.ptm-role-head { margin-bottom: 0.55rem; }
.ptm-role-desc {
  margin: 0; padding: 0 0.25rem;
  font-size: 0.85rem; line-height: 1.85; color: var(--text-2);
}
.ptm-prose {
  margin: 0 0 0.8rem; padding: 0 0.25rem;
  font-size: 0.92rem; line-height: 1.85; color: var(--text-2);
}
.ptm-prose:last-child { margin-bottom: 0; }
.ptm-role-title {
  margin: 1.35rem 0 0.7rem; padding-left: 0.25rem;
  font-size: 1rem; font-weight: 700; color: var(--cyan-strong);
}
.ptm-role-title:first-child { margin-top: 0.2rem; }
@media (max-width: 640px) {
  .pt-card { width: 168px; padding: 0.6rem 0.65rem 0.5rem; }
  .pt-card-desc { -webkit-line-clamp: 2; }
}

/* ========== 迷你/枝干节点卡片（半尺寸 box） ========== */
.pt-card.pt-mini, .pt-card.pt-branch {
  width: auto; padding: 0.34rem 0.62rem;
  border-radius: 0.5rem;
  cursor: grab;
}
.pt-card.pt-mini .pt-card-title { font-size: 0.72rem; font-weight: 500; white-space: nowrap; color: var(--text-2); }
.pt-card.pt-branch .pt-card-title { font-size: 0.8rem; font-weight: 600; white-space: nowrap; color: var(--cyan-strong); }
.pt-card.pt-mini .pt-card-title::before, .pt-card.pt-branch .pt-card-title::before { width: 0.38rem; height: 0.38rem; }
.pt-card.pt-branch { background: rgba(6, 182, 212, 0.1); border-color: rgba(8, 145, 178, 0.5); }
.pt-card.pt-mini { background: #ffffff; }
.pt-card.pt-rich { cursor: pointer; }
.pt-card.pt-clickable { cursor: pointer; }