/* ===== BAOQU BBROOT — Visual System v2 ===== */
:root {
  --navy: #0a1a2f;
  --navy-2: #0e2540;
  --navy-deep: #060f1c;
  --green: #0c3b32;
  --graphite: #16222f;
  --accent: #ff6a45;        /* coral orange */
  --accent-soft: rgba(255,106,69,.12);
  --cyan: #2bd4c4;          /* bright cyan */
  --cyan-soft: rgba(43,212,196,.12);
  --text: #eaf1f7;
  --muted: #9bb0c2;
  --muted-2: #6f8597;
  --bg: #0a1a2f;
  --card: #0f2336;
  --card-2: #11293f;
  --border: rgba(255,255,255,.08);
  --border-2: rgba(255,255,255,.14);
  --maxw: 1160px;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 50px -20px rgba(0,0,0,.6);
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Manrope", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.en { font-weight: 600; }
.zh { color: var(--muted); font-size: .92em; }

/* ===== Navbar ===== */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px;
  background: rgba(6,15,28,.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s, padding .3s;
}
.nav.scrolled { background: rgba(6,15,28,.92); border-color: var(--border); padding: 12px 28px; }
.nav .brand { display: flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: .4px; font-size: 17px; }
.nav .brand .logo-mark {
  width: 30px; height: 30px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--cyan), var(--accent));
  display: grid; place-items: center; font-size: 14px; color: #04121f; font-weight: 900;
  box-shadow: 0 6px 18px -6px var(--cyan);
}
.nav .brand small { font-weight: 500; color: var(--muted); font-size: 10.5px; letter-spacing: 2px; display: block; line-height: 1; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { font-size: 14px; color: var(--muted); transition: color .2s; position: relative; }
.nav-links a:not(.cta)::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--cyan); transition: width .25s var(--ease);
}
.nav-links a:not(.cta):hover { color: var(--text); }
.nav-links a:not(.cta):hover::after { width: 100%; }
.nav .cta {
  background: var(--accent); color: #fff !important; padding: 10px 20px; border-radius: 999px;
  font-weight: 700; font-size: 13px; white-space: nowrap; transition: transform .2s, box-shadow .2s;
}
.nav .cta:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(255,106,69,.42); }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 24px; cursor: pointer; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 9px; padding: 15px 30px; border-radius: 999px;
  font-weight: 700; font-size: 15px; cursor: pointer; border: 0; transition: transform .25s var(--ease), box-shadow .25s, background .25s, border-color .25s;
  will-change: transform;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 12px 30px -12px rgba(255,106,69,.7); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -14px rgba(255,106,69,.85); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border-2); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-3px); }
.btn-cyan { background: var(--cyan); color: #04121f; }
.btn-cyan:hover { transform: translateY(-3px); box-shadow: 0 14px 34px -12px rgba(43,212,196,.7); }
.btn-row { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== Section ===== */
section { padding: 110px 0; position: relative; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 64px; }
.section-head .eyebrow {
  display: inline-block; color: var(--cyan); letter-spacing: 4px; text-transform: uppercase;
  font-size: 12px; font-weight: 800; margin-bottom: 14px;
  padding: 5px 14px; border: 1px solid var(--cyan-soft); border-radius: 999px; background: var(--cyan-soft);
}
.section-head h2 { font-size: clamp(30px, 4.4vw, 46px); margin: 6px 0 14px; line-height: 1.15; letter-spacing: -.5px; }
.section-head p { color: var(--muted); font-size: 17px; }

/* ===== Hero ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; position: relative; overflow: hidden;
  padding-top: 90px;
  background:
    radial-gradient(900px 520px at 78% 18%, rgba(43,212,196,.16), transparent 60%),
    radial-gradient(760px 520px at 12% 88%, rgba(255,106,69,.14), transparent 60%),
    linear-gradient(165deg, var(--navy-deep) 0%, var(--navy) 55%, var(--navy-2) 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 46px 46px; mask-image: radial-gradient(circle at 50% 40%, #000 30%, transparent 78%);
}
.hero .container { position: relative; z-index: 3; display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(36px, 5.6vw, 66px); line-height: 1.08; font-weight: 800; letter-spacing: -1px; margin-bottom: 26px; }

/* 品牌名中英文对照（从导航搬来的"宝趣·数字增长基础" + BAOQU BBROOT） */
.brand-zh {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 18px;
  line-height: 1.15;
}
.brand-zh .zh {
  color: var(--cyan);
  letter-spacing: 3px;
  font-size: 15px;
  font-weight: 800;
}
.brand-zh .en {
  color: var(--muted);
  letter-spacing: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}
.hero h1 .hl { background: linear-gradient(120deg, var(--cyan), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .sub { font-size: 18px; max-width: 560px; color: var(--muted); margin-bottom: 8px; }
.hero .sub.en { font-weight: 600; color: var(--text); margin-bottom: 22px; }
.hero .tagline { display: inline-flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.hero .tagline span {
  font-size: 12px; padding: 7px 15px; border: 1px solid var(--border-2); border-radius: 999px;
  color: var(--cyan); letter-spacing: 1px; background: rgba(255,255,255,.02);
}

/* Hero visual anchor — abstract global growth node graph */
.hero-visual { position: relative; aspect-ratio: 1/1; }
.hero-visual svg { width: 100%; height: 100%; overflow: visible; }
.node { fill: var(--cyan); }
.node-pulse { transform-origin: center; animation: pulse 3s var(--ease) infinite; }
@keyframes pulse { 0%,100% { opacity: .35; r: 4; } 50% { opacity: 1; r: 7; } }
.ring { fill: none; stroke: rgba(43,212,196,.35); stroke-width: 1; }
.ring-2 { stroke: rgba(255,106,69,.4); }
.link-line { stroke: rgba(43,212,196,.4); stroke-width: 1.4; }
.float-card {
  position: absolute; background: rgba(15,35,54,.85); border: 1px solid var(--border-2);
  border-radius: 14px; padding: 12px 16px; backdrop-filter: blur(8px); box-shadow: var(--shadow);
  font-size: 13px; display: flex; align-items: center; gap: 10px; animation: floaty 5s ease-in-out infinite;
}
.float-card .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.float-card.b { top: 12%; right: -6%; animation-delay: -2s; }
.float-card.c { bottom: 14%; left: -8%; animation-delay: -3.5s; }
.float-card .num { font-weight: 800; color: var(--accent); font-size: 16px; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ===== Trust strip ===== */
.trust { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--navy-deep); }
.trust .container { display: flex; flex-wrap: wrap; justify-content: center; gap: 40px 64px; padding: 26px 24px; }
.trust .item { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 14px; }
.trust .item b { color: var(--text); font-size: 22px; font-weight: 800; }

/* ===== Cards / Grid ===== */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3,1fr); }
.grid-2 { grid-template-columns: repeat(2,1fr); }
.grid-4 { grid-template-columns: repeat(4,1fr); }
.card {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px; transition: transform .3s var(--ease), border-color .3s, box-shadow .3s; position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--accent)); transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.card:hover { transform: translateY(-8px); border-color: var(--border-2); box-shadow: var(--shadow); }
.card:hover::before { transform: scaleX(1); }
.card .ico {
  width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center;
  background: var(--cyan-soft); color: var(--cyan); font-size: 24px; margin-bottom: 18px;
  transition: transform .3s var(--ease);
}
.card:hover .ico { transform: scale(1.08) rotate(-4deg); }
.card h3 { font-size: 20px; margin-bottom: 8px; letter-spacing: -.3px; }
.card p { color: var(--muted); font-size: 15px; }
.card ul { list-style: none; margin-top: 16px; }
.card ul li { padding-left: 22px; position: relative; color: var(--muted); font-size: 14.5px; margin-bottom: 9px; }
.card ul li::before {
  content: ""; position: absolute; left: 0; top: 10px; width: 7px; height: 7px; border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--accent));
}

/* ===== Methodology steps ===== */
.steps { counter-reset: step; display: grid; gap: 22px; }
.step {
  display: grid; grid-template-columns: 72px 1fr; gap: 26px; align-items: start;
  padding: 30px; background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--border); border-radius: var(--radius); transition: transform .3s var(--ease), border-color .3s;
}
.step:hover { transform: translateX(6px); border-color: var(--border-2); }
.step .num {
  width: 72px; height: 72px; border-radius: 18px; display: grid; place-items: center;
  font-size: 24px; font-weight: 800; color: #04121f;
  background: linear-gradient(135deg, var(--cyan), var(--accent)); box-shadow: 0 12px 26px -10px rgba(43,212,196,.6);
}
.step h3 { font-size: 23px; margin-bottom: 4px; letter-spacing: -.4px; }
.step .step-en { color: var(--cyan); font-size: 13px; letter-spacing: 3px; font-weight: 800; text-transform: uppercase; }
.step ul { list-style: none; margin-top: 14px; display: grid; gap: 9px; }
.step ul li { color: var(--muted); font-size: 15px; padding-left: 20px; position: relative; }
.step ul li::before { content: "›"; position: absolute; left: 0; color: var(--accent); font-weight: 800; font-size: 18px; }

/* ===== Why us / who ===== */
.icon-row { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.icon-row .item {
  display: flex; align-items: center; gap: 10px; padding: 13px 20px; border: 1px solid var(--border);
  border-radius: 999px; background: var(--card); font-size: 14px; color: var(--text); transition: border-color .25s, transform .25s;
}
.icon-row .item:hover { border-color: var(--cyan); transform: translateY(-3px); }
.icon-row .item .d { color: var(--cyan); }

/* ===== Process timeline ===== */
.timeline { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; position: relative; }
.timeline::before {
  content: ""; position: absolute; top: 38px; left: 9%; right: 9%; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--accent)); opacity: .55;
}
.tl-item { text-align: center; position: relative; padding: 0 14px; }
.tl-item .bubble {
  width: 76px; height: 76px; margin: 0 auto 20px; border-radius: 50%;
  display: grid; place-items: center; font-size: 24px; font-weight: 800; color: #fff;
  background: var(--graphite); border: 2px solid var(--cyan); position: relative; z-index: 2;
  transition: transform .3s var(--ease), box-shadow .3s;
}
.tl-item:hover .bubble { transform: scale(1.08); box-shadow: 0 0 0 8px var(--cyan-soft); }
.tl-item:nth-child(even) .bubble { border-color: var(--accent); }
.tl-item h4 { font-size: 18px; margin-bottom: 6px; }
.tl-item p { color: var(--muted); font-size: 14px; }

/* ===== Final CTA ===== */
.cta-band {
  background:
    radial-gradient(700px 360px at 20% 0%, rgba(43,212,196,.18), transparent 60%),
    linear-gradient(135deg, var(--green), var(--navy));
  border-top: 1px solid var(--border); text-align: center;
}
.cta-band h2 { font-size: clamp(28px,4vw,44px); margin-bottom: 16px; letter-spacing: -.5px; }
.cta-band p { color: var(--muted); margin-bottom: 28px; font-size: 17px; }

/* ===== Footer ===== */
footer { background: var(--navy-deep); padding: 64px 0 30px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; }
footer .brand { font-weight: 800; font-size: 18px; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
footer .brand .logo-mark { width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(135deg,var(--cyan),var(--accent)); display: grid; place-items: center; color: #04121f; font-weight: 900; font-size: 13px; }
footer p, footer a { color: var(--muted); font-size: 14px; line-height: 1.9; }
footer h4 { font-size: 13px; margin-bottom: 16px; color: var(--text); letter-spacing: 1.5px; text-transform: uppercase; }
footer .col a { display: block; transition: color .2s, padding-left .2s; }
footer .col a:hover { color: var(--cyan); padding-left: 5px; }
.footer-bottom { text-align: center; color: var(--muted-2); font-size: 12.5px; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--border); }

/* ===== Contact form ===== */
.form-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 44px; align-items: start; }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 13.5px; margin-bottom: 8px; color: var(--text); font-weight: 600; }
.field input, .field select, .field textarea {
  width: 100%; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--border-2);
  background: var(--card); color: var(--text); font-size: 15px; font-family: inherit; transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 4px var(--cyan-soft); }
.field textarea { resize: vertical; min-height: 120px; }
.radio-row { display: flex; gap: 20px; flex-wrap: wrap; }
.radio-row label { display: flex; align-items: center; gap: 8px; color: var(--muted); font-weight: 400; cursor: pointer; }
.form-note { color: var(--muted-2); font-size: 13px; margin-top: 10px; }
.contact-side .card { text-align: center; }
.contact-side .big { font-size: 24px; font-weight: 800; color: var(--cyan); margin: 12px 0; }
.form-ok {
  display: none; background: var(--cyan-soft); border: 1px solid var(--cyan);
  color: var(--cyan); padding: 16px; border-radius: 12px; margin-top: 16px; font-weight: 600;
}
/* honeypot */
.hp { position: absolute; left: -9999px; top: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { max-width: 380px; margin: 10px auto 0; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .timeline { grid-template-columns: repeat(2,1fr); gap: 36px 0; }
  .timeline::before { display: none; }
  .form-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column;
    background: var(--navy-deep); padding: 20px 28px; gap: 18px; border-bottom: 1px solid var(--border); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  section { padding: 72px 0; }
  .hero { min-height: auto; padding: 120px 0 70px; }
  .btn-row { flex-direction: column; }
  .btn { justify-content: center; }
  .trust .container { gap: 24px 36px; }
}