/* 途真 Truzhen 官网样式 v5.0 — 深色科技感 / 零外链 / 系统字体
   注意：articles/ 与 404.html 仍使用旧 css/style.css，本文件只服务 8 个主页面 */

:root {
  --bg: #0a0e16;
  --bg-soft: #0d1320;
  --panel: rgba(148, 163, 184, 0.05);
  --panel-solid: #101828;
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.3);
  --text: #e6edf6;
  --text-2: #9aa7b8;
  --text-3: #6b7a8f;
  --accent: #22d3ee;
  --accent-2: #3b82f6;
  --ok: #34d399;
  --warn: #fbbf24;
  --danger: #f87171;
  --grad: linear-gradient(135deg, #22d3ee, #3b82f6);
  --radius: 16px;
  --radius-sm: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --shadow: 0 16px 48px rgba(2, 8, 20, 0.5);
  --glow: 0 0 0 1px rgba(34, 211, 238, 0.25), 0 8px 32px rgba(34, 211, 238, 0.12);
}

[data-theme="light"] {
  --bg: #f6f8fb;
  --bg-soft: #eef2f7;
  --panel: rgba(15, 33, 61, 0.03);
  --panel-solid: #ffffff;
  --border: rgba(15, 33, 61, 0.1);
  --border-strong: rgba(15, 33, 61, 0.22);
  --text: #0f213d;
  --text-2: #43536b;
  --text-3: #6d7c93;
  --accent: #0891b2;
  --accent-2: #2563eb;
  --grad: linear-gradient(135deg, #0891b2, #2563eb);
  --shadow: 0 16px 48px rgba(15, 33, 61, 0.1);
  --glow: 0 0 0 1px rgba(8, 145, 178, 0.25), 0 8px 32px rgba(8, 145, 178, 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; scroll-snap-type: y proximity; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 纯 CSS 科技网格背景 + 辉光，零图片请求 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(rgba(148, 163, 184, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 80%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(600px 320px at 18% -4%, rgba(34, 211, 238, 0.14), transparent 70%),
    radial-gradient(720px 360px at 85% -8%, rgba(59, 130, 246, 0.14), transparent 70%);
  pointer-events: none;
}
[data-theme="light"] body::before {
  background:
    linear-gradient(rgba(15, 33, 61, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 33, 61, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
}

a { color: inherit; text-decoration: none; }
img, svg { vertical-align: middle; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ===== 头部 ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: background 0.25s, border-color 0.25s;
}
.header.scrolled {
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom-color: var(--border);
}
.header .container {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}
.logo { font-size: 20px; font-weight: 700; letter-spacing: 0.5px; }
.logo-subtitle {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  margin-left: 4px;
}
.nav-menu { display: flex; gap: 4px; margin-left: auto; }
.nav-link {
  padding: 7px 13px;
  border-radius: 8px;
  font-size: 14.5px;
  color: var(--text-2);
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover { color: var(--text); background: var(--panel); }
.nav-link.active { color: var(--accent); }

.theme-toggle, .menu-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 36px; height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.theme-toggle:hover, .menu-btn:hover { color: var(--accent); border-color: var(--border-strong); }
.theme-toggle svg, .menu-btn svg { width: 17px; height: 17px; }
.menu-btn { display: none; }
/* 深色显示太阳（点击切浅色），浅色显示月亮 */
.icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: inline; }

/* ===== 全屏分页：每个 section 占满视口、内容垂直居中、滚动吸附 ===== */
main { display: block; }
.hero,
.section {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  scroll-snap-align: start;
}
.hero > .container,
.section > .container { width: 100%; }
/* CTA 收束段与动态长列表不强制满屏：CTA 与页脚共用最后一屏，长列表自然流动 */
.section.tight {
  min-height: 0;
  padding: 72px 0;
  scroll-snap-align: none;
}
.section { padding: 88px 0; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 14px;
}
.eyebrow::before { content: "// "; opacity: 0.7; }
.section-title { font-size: clamp(26px, 4vw, 38px); line-height: 1.3; letter-spacing: -0.5px; }
.section-lead { max-width: 720px; margin-top: 14px; color: var(--text-2); font-size: 16.5px; }
.center { text-align: center; }
.center .section-lead { margin-left: auto; margin-right: auto; }

/* ===== 按钮 / 徽标 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s, background 0.2s;
  cursor: pointer;
}
.btn-primary { background: var(--grad); color: #04121f; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--glow); }
.btn-outline { border-color: var(--border-strong); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-2);
  background: var(--panel);
}
.chip.on { color: var(--accent); border-color: rgba(34, 211, 238, 0.45); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }

.badge {
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid;
  white-space: nowrap;
}
.badge-warn { color: var(--warn); border-color: rgba(251, 191, 36, 0.45); background: rgba(251, 191, 36, 0.1); border-color: color-mix(in srgb, var(--warn) 45%, transparent); background: color-mix(in srgb, var(--warn) 10%, transparent); }
.badge-ok { color: var(--ok); border-color: rgba(52, 211, 153, 0.45); background: rgba(52, 211, 153, 0.1); border-color: color-mix(in srgb, var(--ok) 45%, transparent); background: color-mix(in srgb, var(--ok) 10%, transparent); }
.badge-info { color: var(--accent); border-color: rgba(34, 211, 238, 0.45); background: rgba(34, 211, 238, 0.1); border-color: color-mix(in srgb, var(--accent) 45%, transparent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.badge-danger { color: var(--danger); border-color: rgba(248, 113, 113, 0.45); background: rgba(248, 113, 113, 0.1); border-color: color-mix(in srgb, var(--danger) 45%, transparent); background: color-mix(in srgb, var(--danger) 10%, transparent); }

/* ===== Hero ===== */
.hero { padding: 96px 0 48px; position: relative; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.22;
  letter-spacing: -1px;
}
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub { margin-top: 20px; color: var(--text-2); font-size: 17px; max-width: 540px; }
.hero .chips { margin-top: 26px; }
.hero-actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== 工作台模拟 console ===== */
.console {
  background: var(--panel-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}
.console::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.5), transparent 40%, transparent 60%, rgba(59, 130, 246, 0.4));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.console-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.console-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.console-dot:first-child { background: var(--danger); opacity: 0.75; }
.console-dot:nth-child(2) { background: var(--warn); opacity: 0.75; }
.console-dot:nth-child(3) { background: var(--ok); opacity: 0.75; }
.console-title {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-3);
}
.console-body { padding: 18px; display: grid; gap: 12px; }
.console-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stat {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: var(--panel);
}
.stat b { font-size: 20px; font-family: var(--mono); display: block; }
.stat span { font-size: 12px; color: var(--text-3); }
.stat.warn b { color: var(--warn); }
.stat.info b { color: var(--accent); }
.stat.danger b { color: var(--danger); }
.console-row {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13.5px;
  background: var(--panel);
}
.console-row .grow { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.console-row .sub { color: var(--text-3); font-size: 12px; }
.console-ai {
  border: 1px dashed rgba(34, 211, 238, 0.4);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 13.5px;
  background: rgba(34, 211, 238, 0.06);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}
.console-ai .tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  display: block;
  margin-bottom: 4px;
}
.console-ai a { color: var(--accent); font-weight: 600; font-size: 13px; }

/* ===== 主权链 pipeline ===== */
.pipeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 48px;
  counter-reset: step;
}
.pipe-step { position: relative; padding: 0 18px 0 0; }
.pipe-step + .pipe-step { padding-left: 18px; }
.pipe-node {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.pipe-idx {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  border: 1px solid rgba(34, 211, 238, 0.45);
  border-radius: 8px;
  padding: 3px 8px;
  background: rgba(34, 211, 238, 0.08);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}
.pipe-line {
  flex: 1;
  height: 2px;
  background: var(--border);
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}
.pipe-line::after {
  content: "";
  position: absolute;
  top: 0; left: -40%;
  width: 40%; height: 100%;
  background: var(--grad);
  animation: flow 2.6s linear infinite;
}
@keyframes flow { to { left: 110%; } }
.pipe-step h3 { font-size: 17px; margin-bottom: 6px; }
.pipe-step h3 .who { font-family: var(--mono); font-size: 11.5px; color: var(--text-3); margin-left: 6px; font-weight: 500; }
.pipe-step p { font-size: 14px; color: var(--text-2); }

/* ===== 卡片网格 ===== */
.grid { display: grid; gap: 18px; margin-top: 44px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--panel);
  position: relative;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.card:hover { transform: translateY(-4px); border-color: var(--border-strong); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); box-shadow: var(--shadow); }
.card .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
  display: block;
  margin-bottom: 12px;
}
.card .icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(34, 211, 238, 0.4);
  background: rgba(34, 211, 238, 0.08);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  color: var(--accent);
  margin-bottom: 16px;
}
.card .icon svg { width: 19px; height: 19px; }
.card h3 { font-size: 17.5px; margin-bottom: 8px; }
.card p { font-size: 14.5px; color: var(--text-2); }
.card .badge { position: absolute; top: 22px; right: 20px; }

/* ===== 立场区 / 引用块 ===== */
.stance {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  background:
    radial-gradient(480px 200px at 12% 0%, rgba(34, 211, 238, 0.08), transparent 70%),
    var(--panel-solid);
  margin-top: 44px;
}
.stance blockquote {
  font-size: clamp(19px, 2.6vw, 25px);
  line-height: 1.55;
  font-weight: 600;
  border-left: 3px solid var(--accent);
  padding-left: 22px;
}
.stance .from { margin-top: 14px; font-family: var(--mono); font-size: 13px; color: var(--text-3); }

/* ===== 分步交付 ===== */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 44px; }
.step {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px;
  background: var(--panel);
}
.step .num { font-family: var(--mono); font-size: 12px; color: var(--accent); display: block; margin-bottom: 8px; }
.step h3 { font-size: 15.5px; margin-bottom: 5px; }
.step p { font-size: 13px; color: var(--text-2); }

/* ===== 对照表 ===== */
.compare { margin-top: 44px; overflow-x: auto; }
.compare table { width: 100%; border-collapse: collapse; min-width: 560px; }
.compare th, .compare td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14.5px;
}
.compare th { font-family: var(--mono); font-size: 13px; color: var(--text-3); font-weight: 600; }
.compare td:last-child { color: var(--text); }
.compare td:first-child { color: var(--text-2); }

/* ===== 动态列表 ===== */
.news-list { margin-top: 44px; display: grid; gap: 14px; }
.news-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  align-items: baseline;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  background: var(--panel);
  transition: border-color 0.2s, transform 0.2s;
}
.news-item:hover { border-color: var(--border-strong); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); transform: translateX(4px); }
.news-date { font-family: var(--mono); font-size: 13px; color: var(--text-3); }
.news-title { font-size: 16.5px; line-height: 1.5; font-weight: 600; }
.news-title a:hover { color: var(--accent); }
.news-tags { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 8px; }

/* ===== CTA 横幅 ===== */
.cta-band {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 52px 40px;
  text-align: center;
  background:
    radial-gradient(560px 240px at 50% -20%, rgba(34, 211, 238, 0.12), transparent 70%),
    var(--panel-solid);
}
.cta-band h2 { font-size: clamp(22px, 3.4vw, 32px); }
.cta-band p { color: var(--text-2); margin-top: 12px; }
.cta-band .hero-actions { justify-content: center; }

/* ===== 联系页 ===== */
.info-rows { margin-top: 44px; display: grid; gap: 14px; max-width: 640px; }
.info-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  background: var(--panel);
}
.info-row .icon { color: var(--accent); flex-shrink: 0; margin-top: 3px; }
.info-row .icon svg { width: 20px; height: 20px; }
.info-row b { display: block; font-size: 15.5px; }
.info-row .val { font-family: var(--mono); font-size: 14.5px; color: var(--accent); }
.info-row .sub { font-size: 13px; color: var(--text-3); }
.checklist { margin-top: 20px; display: grid; gap: 10px; }
.checklist li {
  list-style: none;
  display: flex;
  gap: 10px;
  font-size: 14.5px;
  color: var(--text-2);
}
.checklist li::before { content: "✓"; color: var(--ok); font-weight: 700; }

/* ===== 页脚 ===== */
.footer { border-top: 1px solid var(--border); padding: 48px 0 36px; margin-top: 40px; background: var(--bg-soft); }
.footer-main { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 28px; }
.footer-logo { font-weight: 700; font-size: 17px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-left: auto; }
.footer-nav a { font-size: 13.5px; color: var(--text-3); }
.footer-nav a:hover { color: var(--accent); }
.footer-icp { width: 100%; font-size: 12.5px; color: var(--text-3); }
.footer-icp a { color: var(--text-3); }
.footer-icp a:hover { color: var(--accent); }
.footer-bottom {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--text-3);
}

/* ===== 进场动画（仅 html.js 下启用，脚本失效时内容直接可见）===== */
html.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
html.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pipe-line::after { animation: none; }
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card, .news-item { transition: none; }
}

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .pipeline { grid-template-columns: 1fr 1fr; gap: 28px 0; }
  .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    padding: 12px 20px 18px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }
  .nav-menu.open { display: flex; }
  .nav-menu { margin-left: 0; }
  .theme-toggle { margin-left: auto; }
  .menu-btn { display: inline-flex; }
  .header .container { gap: 12px; }
  /* 窄屏卡片堆叠会超过一屏，取消强制满屏与居中，回归自然流动 */
  .hero, .section {
    min-height: 0;
    display: block;
    scroll-snap-align: none;
  }
  .hero { padding: 104px 0 56px; }
  .section { padding: 64px 0; }
  .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
  .pipeline { grid-template-columns: 1fr; }
  .pipe-line { display: none; }
  .steps { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 6px; }
  .stance { padding: 26px; }
  .console-stats { grid-template-columns: repeat(3, 1fr); }
}