/* ============================================================
   诺之远 · 官网设计系统（浅色专业版）
   概念：可信、清爽、科技感 —— 明亮底色 + 深海军蓝文字 + 清爽蓝青点缀
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-2: #f6f9fd;
  --panel: #ffffff;
  --panel-2: #f4f8fd;
  --line: rgba(20, 60, 120, 0.10);
  --line-strong: rgba(20, 60, 120, 0.20);
  --text: #243247;
  --text-2: #607086;
  --text-3: #97a6b8;
  --accent: #2f82ff;
  --accent-2: #00a0e9;
  --accent-soft: #e9f2ff;
  --accent-glow: rgba(47, 130, 255, 0.14);
  --accent-2-glow: rgba(0, 160, 233, 0.12);
  --danger: #e5484d;
  --ok: #1f9d68;
  --maxw: 1180px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(16, 52, 96, 0.06);
  --shadow-md: 0 12px 30px rgba(16, 52, 96, 0.10);
  --shadow-lg: 0 22px 50px rgba(16, 52, 96, 0.12);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #fff; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* 背景：浅色柔光 + 细腻网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 520px at 82% -12%, rgba(47, 130, 255, 0.10), transparent 60%),
    radial-gradient(760px 480px at 4% 6%, rgba(0, 160, 233, 0.08), transparent 55%),
    linear-gradient(180deg, #ffffff 0%, #f8fbff 40%, #ffffff 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(20, 60, 120, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 60, 120, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(1100px 700px at 50% 0%, rgba(0,0,0,0.6), transparent 80%);
  pointer-events: none;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(20,60,120,.04);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: .01em; color: var(--text); }
.brand .logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-family: var(--font-mono); font-weight: 700; font-size: 15px;
  box-shadow: 0 6px 16px var(--accent-glow);
}
.brand .brand-logo { width: 34px; height: 34px; border-radius: 9px; object-fit: contain; }
.brand .brand-name { font-size: 17px; }
.brand .brand-name span { color: var(--text-2); font-weight: 500; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 9px 13px; border-radius: 9px; color: var(--text-2); font-size: 15px; font-weight: 600;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: rgba(14,127,166,.06); }
.nav-links a.active { color: var(--accent); background: rgba(14,127,166,.10); }
.nav-cta { margin-left: 10px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: .25s; }

@media (max-width: 960px) {
  .nav-links {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch;
    background: rgba(255,255,255,.98); border-bottom: 1px solid var(--line);
    padding: 12px 20px 20px; gap: 6px; transform: translateY(-140%); transition: transform .3s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-cta { display: block; }
  .nav-toggle { display: flex; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 12px; font-weight: 700; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: transform .18s, box-shadow .25s, background .2s, color .2s;
  white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; box-shadow: 0 10px 24px var(--accent-glow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(47,130,255,.24); }
.btn-ghost { background: #fff; color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 15px 28px; font-size: 16px; }

/* ---------- section / headers ---------- */
.section { padding: 92px 0; position: relative; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.kicker {
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent); display: inline-flex; align-items: center; gap: 8px; margin-bottom: 16px;
}
.kicker::before { content: ""; width: 26px; height: 2px; background: var(--accent); }
.section-head.center .kicker::after { content: ""; width: 26px; height: 2px; background: var(--accent); }
.h1 { font-size: clamp(38px, 5.6vw, 60px); line-height: 1.08; font-weight: 800; letter-spacing: -.02em; margin: 0 0 20px; }
.h2 { font-size: clamp(28px, 3.8vw, 40px); line-height: 1.14; font-weight: 800; letter-spacing: -.015em; margin: 0 0 16px; }
.lead { color: var(--text-2); font-size: 18px; max-width: 680px; }
.section-head.center .lead { margin-left: auto; margin-right: auto; }
.text-accent { color: var(--accent); }
.grad { background: linear-gradient(120deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- 首页 hero ---------- */
.hero { padding: 124px 0 84px; position: relative; }
.hero .container { display: grid; grid-template-columns: 1.12fr .88fr; gap: 56px; align-items: center; }
.hero-panel {
  background: #fff;
  border: 1px solid var(--line); border-radius: 22px; padding: 26px;
  box-shadow: var(--shadow-lg);
}
.hero-panel .panel-head { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); padding-bottom: 14px; margin-bottom: 18px; font-family: var(--font-mono); font-size: 12px; color: var(--text-3); letter-spacing: .08em; }
.status-dots { display: flex; gap: 6px; }
.status-dots i { width: 9px; height: 9px; border-radius: 50%; display: block; }
.status-dots i:nth-child(1) { background: #ff5f57; }
.status-dots i:nth-child(2) { background: #febc2e; }
.status-dots i:nth-child(3) { background: #28c840; }
.stat-line { display: flex; justify-content: space-between; align-items: flex-end; padding: 11px 0; border-bottom: 1px dashed var(--line); }
.stat-line:last-child { border-bottom: 0; }
.stat-line .label { font-size: 13px; color: var(--text-2); }
.stat-line .val { font-family: var(--font-mono); font-size: 15px; color: var(--accent); font-weight: 700; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.hero-meta { margin-top: 32px; display: flex; gap: 34px; }
.hero-meta .item { border-left: 3px solid var(--accent); padding-left: 14px; }
.hero-meta .item .n { font-family: var(--font-mono); font-size: 26px; font-weight: 700; color: var(--text); }
.hero-meta .item .t { font-size: 13px; color: var(--text-2); }

@media (max-width: 960px) {
  .hero .container { grid-template-columns: 1fr; gap: 36px; }
  .hero { padding: 88px 0 56px; }
  .hero-meta { gap: 22px; }
}

/* ---------- 徽章 / 标签 ---------- */
.badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.badge { font-size: 13px; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line); color: var(--text-2); background: #fff; }

/* ---------- 卡片网格 ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform .25s, border-color .25s, box-shadow .25s;
  position: relative; overflow: hidden;
}
.card::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: radial-gradient(360px 200px at 100% 0%, var(--accent-glow), transparent 60%); opacity: 0; transition: opacity .3s; }
.card:hover { transform: translateY(-4px); border-color: rgba(14,127,166,.35); box-shadow: var(--shadow-md); }
.card:hover::after { opacity: 1; }
.card .icon { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--accent-soft); border: 1px solid rgba(14,127,166,.22); color: var(--accent); margin-bottom: 18px; }
.card h3 { margin: 0 0 10px; font-size: 20px; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--text-2); font-size: 15px; }
.card .link { margin-top: 16px; display: inline-flex; align-items: center; gap: 6px; color: var(--accent); font-size: 14px; font-weight: 700; }
.card .link:hover { gap: 10px; }

@media (max-width: 960px) { .grid-3 { grid-template-columns: 1fr; } .grid-2 { grid-template-columns: 1fr; } }

/* ---------- service number ---------- */
.svc-num { font-family: var(--font-mono); font-size: 12px; color: var(--text-3); letter-spacing: .12em; }

/* ---------- 流程 / 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 40px; }
.steps .step { padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow-sm); }
.steps .step .no { font-family: var(--font-mono); color: var(--accent); font-size: 13px; letter-spacing: .1em; }
.steps .step h4 { margin: 10px 0 6px; font-size: 16px; }
.steps .step p { margin: 0; font-size: 13px; color: var(--text-2); }
@media (max-width: 960px) { .steps { grid-template-columns: 1fr; } }

/* ---------- 页 hero ---------- */
.page-hero { padding: 84px 0 34px; }
.breadcrumb { font-family: var(--font-mono); font-size: 12.5px; color: var(--text-3); letter-spacing: .05em; margin-bottom: 22px; }
.breadcrumb a { color: var(--text-2); }
.breadcrumb a:hover { color: var(--accent); }

/* ---------- 内容区 ---------- */
.prose { max-width: 800px; }
.prose h2 { margin-top: 44px; }
.prose h3 { margin-top: 28px; font-size: 20px; }
.prose p, .prose li { color: var(--text-2); }
.prose ul { padding-left: 20px; }
.prose ul li { margin: 8px 0; }
.prose strong { color: var(--text); }
.info-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 24px 0; }
.info-item { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.info-item .dot { width: 18px; height: 18px; border-radius: 6px; flex: none; margin-top: 3px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.info-item h4 { margin: 0 0 4px; font-size: 15px; }
.info-item p { margin: 0; font-size: 13px; color: var(--text-2); }
@media (max-width: 960px) { .info-grid { grid-template-columns: 1fr; } .prose { max-width: 100%; } }

/* ---------- 典型场景 ---------- */
.scenario { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; padding: 44px 0; border-bottom: 1px solid var(--line); }
.scenario:last-child { border-bottom: 0; }
.scenario.reverse { grid-template-columns: 1fr 1fr; }
.scenario .num { font-family: var(--font-mono); color: var(--accent); font-size: 14px; letter-spacing: .12em; margin-bottom: 10px; }
.scenario h3 { font-size: 26px; margin: 0 0 14px; letter-spacing: -.01em; }
.scenario p { color: var(--text-2); margin: 0 0 18px; }
.scenario ul { list-style: none; padding: 0; margin: 0; }
.scenario ul li { display: flex; gap: 10px; margin: 10px 0; color: var(--text-2); font-size: 15px; }
.scenario ul li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); margin-top: 9px; flex: none; }
.scenario .visual { min-height: 280px; border-radius: 18px; background: linear-gradient(160deg, #eaf2ff 0%, #f6fbff 100%); border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; overflow: hidden; padding: 18px; }
.scenario .visual svg { width: 100%; height: auto; max-height: 320px; display: block; }
@media (max-width: 960px) { .scenario, .scenario.reverse { grid-template-columns: 1fr; gap: 22px; } }

/* ---------- CTA 区 ---------- */
.cta { border: 1px solid var(--line); border-radius: 24px; padding: 52px 44px; text-align: center; background: linear-gradient(160deg, #ffffff, #eef6fd); box-shadow: var(--shadow-md); position: relative; overflow: hidden; }
.cta::before { content:""; position:absolute; inset:0; background: radial-gradient(520px 240px at 50% 0%, var(--accent-glow), transparent 70%); opacity:.5; }
.cta h2 { margin: 0 0 12px; font-size: clamp(24px,3vw,32px); }
.cta p { color: var(--text-2); max-width: 560px; margin: 0 auto 28px; }
.cta .hero-actions { justify-content: center; margin-top: 0; }

/* ---------- Footer ---------- */

.site-footer .footer-intro { margin-top: 14px; }
.services-grid-top { margin-top: -40px; }
.site-footer { border-top: 1px solid var(--line); padding: 56px 0 40px; background: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid h5 { font-size: 14px; margin: 0 0 16px; color: var(--text); }
.footer-grid a, .footer-grid p { color: var(--text-2); font-size: 14px; display: block; margin: 8px 0; }
.footer-grid a:hover { color: var(--accent); }
.footer-bottom { margin-top: 42px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-3); }
.footer-bottom a { color: var(--text-2); }
@media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- 表单 ---------- */
.form { max-width: 640px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 14px; color: var(--text-2); margin-bottom: 8px; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; background: #fff; border: 1px solid var(--line-strong); border-radius: 11px;
  color: var(--text); font-family: inherit; font-size: 15px; padding: 12px 14px; transition: border-color .2s, box-shadow .2s;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-field textarea { min-height: 130px; resize: vertical; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

/* ---------- 联系方式 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; align-items: start; }
.contact-list .row { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-list .row .icon { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); border: 1px solid rgba(14,127,166,.22); color: var(--accent); display: grid; place-items: center; flex: none; }
.contact-list .row h4 { margin: 0 0 2px; font-size: 15px; }
.contact-list .row p { margin: 0; color: var(--text-2); font-size: 14px; }
@media (max-width: 960px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- 动画 ---------- */
.reveal { transition: opacity .7s ease, transform .7s ease; }
.js .reveal { opacity: 0; transform: translateY(24px); }
.js .reveal.in { opacity: 1; transform: none; }
.d1 { transition-delay: .08s; } .d2 { transition-delay: .16s; } .d3 { transition-delay: .24s; } .d4 { transition-delay: .32s; }

@keyframes pulse { 0%,100% { opacity:.4; } 50% { opacity:1; } }
.pulse { animation: pulse 2.4s ease-in-out infinite; }


/* 首页动态标题 */
.h1-type .line { display: block; overflow: hidden; }
.h1-type .line > span { display: inline-block; transform: translateY(108%); animation: rise .85s cubic-bezier(.2,.7,.3,1) forwards; }
.h1-type .line:nth-of-type(2) > span { animation-delay: .16s; }
@keyframes rise { to { transform: none; } }
.h1-type .grad { background-size: 220% 100%; animation: flow 3.6s ease-in-out infinite; }
@keyframes flow { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
.h1-type .caret { display: inline-block; width: 3px; height: .92em; margin-left: 4px; background: var(--accent); vertical-align: -.06em; animation: blink 1.05s steps(2, start) infinite; }
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }


.hero-visual { display: flex; align-items: center; justify-content: center; }
.hero-visual svg { width: 100%; height: auto; max-height: 460px; display: block; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal, .js .reveal { opacity: 1; transform: none; }
}