/* ===== Tokens ===== */
:root {
  --bg: #f7f9fc;
  --bg-soft: #eef2f8;
  --ink: #0b1a35;
  --ink-soft: #334063;
  --mute: #6b7896;
  --line: #dde3ef;
  --brand-900: #071433;
  --brand-800: #0a1f44;
  --brand-700: #0e2a5c;
  --brand-500: #1b56d5;
  --brand-400: #3c82ff;
  --cyan: #00c2ff;
  --cyan-soft: #aee6ff;
  --accent: #ff4b4b;
  --gold: #f5b74a;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-1: 0 8px 24px -12px rgba(14, 42, 92, .25);
  --shadow-2: 0 24px 60px -20px rgba(14, 42, 92, .35);
  --transition: .35s cubic-bezier(.2,.7,.2,1);
  --maxw: 1240px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ===== Nav ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  backdrop-filter: saturate(140%) blur(14px);
  background: rgba(255,255,255,.72);
  border-bottom: 1px solid rgba(221,227,239,.6);
  transition: var(--transition);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; gap: 28px;
  padding: 14px 28px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: .5px; }
.brand-mark {
  background: linear-gradient(135deg, var(--brand-700), var(--cyan));
  color: #fff; padding: 4px 10px; border-radius: 6px;
  font-family: "Inter", "SF Pro", sans-serif; font-size: 14px;
  box-shadow: 0 4px 12px -4px rgba(27,86,213,.5);
}
.brand-name { font-size: 17px; color: var(--brand-800); }

.nav-links { display: flex; gap: 26px; list-style: none; padding: 0; margin: 0 auto 0 20px; }
.nav-links a {
  color: var(--ink-soft); font-size: 14.5px; font-weight: 500;
  position: relative; padding: 4px 0; transition: color var(--transition);
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -4px; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--brand-500), var(--cyan));
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--brand-700); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: var(--brand-700); color: #fff !important;
  padding: 9px 18px; border-radius: 999px; font-size: 14px; font-weight: 600;
  transition: var(--transition);
}
.nav-cta:hover { background: var(--brand-500); transform: translateY(-1px); }

.nav-toggle {
  display: none; background: none; border: 0; font-size: 22px; cursor: pointer;
  color: var(--brand-800);
}

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh; overflow: hidden;
  background:
    radial-gradient(1200px 600px at 20% 30%, rgba(60,130,255,.28), transparent 60%),
    radial-gradient(900px 500px at 80% 70%, rgba(0,194,255,.18), transparent 60%),
    linear-gradient(160deg, var(--brand-900) 0%, var(--brand-700) 55%, #1247b0 100%);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
}
.hero-canvas { position: absolute; inset: 0; z-index: 1; opacity: .55; }
.hero-grid {
  position: absolute; inset: 0; z-index: 0; opacity: .25;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, #000 45%, transparent 85%);
}
.hero-content {
  position: relative; z-index: 2;
  text-align: center; padding: 140px 28px 80px;
  max-width: 1100px;
}
.hero-eyebrow {
  display: inline-block; padding: 6px 14px; border: 1px solid rgba(255,255,255,.3);
  border-radius: 999px; font-size: 12.5px; letter-spacing: 3px;
  color: var(--cyan-soft); margin-bottom: 22px;
  backdrop-filter: blur(6px);
}
.hero-title {
  font-size: clamp(44px, 7vw, 92px);
  font-weight: 800; line-height: 1.05; margin: 0 0 24px;
  letter-spacing: .04em;
}
.hero-title .line { display: block; }
.hero-title .accent {
  background: linear-gradient(120deg, #fff 0%, var(--cyan) 60%, #ffd29c 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  font-size: clamp(16px, 1.6vw, 20px);
  color: rgba(255,255,255,.82);
  margin: 0 0 36px;
  letter-spacing: .3em;
}
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px;
  font-weight: 600; font-size: 15px;
  transition: var(--transition);
  cursor: pointer; border: 0;
}
.btn-primary {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--brand-400) 100%);
  color: #04122f;
  box-shadow: 0 10px 30px -10px rgba(0,194,255,.55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px -10px rgba(0,194,255,.7); }
.btn-ghost {
  background: rgba(255,255,255,.08); color: #fff;
  border: 1px solid rgba(255,255,255,.3);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255,255,255,.16); }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  max-width: 880px; margin: 0 auto;
  border-top: 1px solid rgba(255,255,255,.18);
  border-bottom: 1px solid rgba(255,255,255,.18);
  padding: 26px 0;
}
.stat { text-align: center; position: relative; }
.stat + .stat::before {
  content: ""; position: absolute; left: 0; top: 14%; height: 72%; width: 1px;
  background: rgba(255,255,255,.18);
}
.stat .num { font-size: clamp(28px, 3.6vw, 42px); font-weight: 700; font-family: "Inter", sans-serif; }
.stat .lab { font-size: 13px; color: rgba(255,255,255,.7); letter-spacing: 2px; margin-top: 4px; }

.hero-scroll {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  font-size: 12px; letter-spacing: 4px; color: rgba(255,255,255,.6);
  animation: bob 1.8s ease-in-out infinite;
  z-index: 2;
}
@keyframes bob { 0%,100%{transform:translate(-50%,0)} 50%{transform:translate(-50%,8px)} }

/* ===== Sections ===== */
.section { padding: 120px 0; position: relative; }
.section-dark {
  background: linear-gradient(180deg, #061129 0%, var(--brand-800) 100%);
  color: #fff;
}
.section-scenarios { background: var(--bg-soft); }
.section-contact { background: linear-gradient(135deg, var(--brand-900), var(--brand-700)); }

.sec-head { text-align: center; max-width: 820px; margin: 0 auto 64px; }
.eyebrow {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  font-size: 12px; letter-spacing: 3px; font-weight: 600;
  color: var(--brand-500); background: rgba(27,86,213,.08);
  margin-bottom: 16px;
}
.eyebrow.light { color: var(--cyan-soft); background: rgba(0,194,255,.12); }
.h2 {
  font-size: clamp(30px, 3.8vw, 48px);
  line-height: 1.2; font-weight: 700; margin: 0 0 16px;
  letter-spacing: .02em;
}
.h2.light { color: #fff; }
.sec-sub { color: var(--mute); font-size: 16.5px; margin: 0; }
.sec-sub.light { color: rgba(255,255,255,.72); }

.lead { font-size: 16px; color: var(--ink-soft); }
.lead.light { color: rgba(255,255,255,.8); }
.lead em { font-style: normal; color: var(--brand-500); font-weight: 600; }
.lead.light em { color: var(--cyan); }

/* ===== About ===== */
.grid-2 { display: grid; grid-template-columns: 1.1fr 1fr; gap: 72px; align-items: start; }
.about-cards { display: grid; gap: 18px; }
.card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px 26px;
  transition: var(--transition);
}
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: transparent; }
.card-kicker { font-size: 11.5px; letter-spacing: 3px; color: var(--brand-500); font-weight: 600; margin-bottom: 8px; text-transform: uppercase; }
.card-title { font-size: 19px; font-weight: 700; color: var(--brand-800); margin-bottom: 6px; }
.card-desc { font-size: 14px; color: var(--mute); }

/* ===== Values ===== */
.values-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.value-card {
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 40px 28px;
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.value-card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(400px 200px at -10% -30%, rgba(0,194,255,.28), transparent 60%);
  opacity: 0; transition: opacity var(--transition);
}
.value-card:hover { transform: translateY(-6px); border-color: rgba(0,194,255,.4); }
.value-card:hover::before { opacity: 1; }
.value-num { font-family: "Inter", sans-serif; font-size: 13px; color: var(--cyan); letter-spacing: 3px; margin-bottom: 24px; }
.value-en { font-family: "Inter", sans-serif; font-size: 14px; color: rgba(255,255,255,.55); letter-spacing: 2px; }
.value-cn { font-size: 40px; font-weight: 800; margin: 6px 0 14px; letter-spacing: .1em; }
.value-desc { color: rgba(255,255,255,.72); font-size: 14px; }

/* ===== Products ===== */
.products-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.product-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  position: relative; overflow: hidden;
  transition: var(--transition);
}
.product-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--brand-500), var(--cyan));
  transform: scaleX(0); transform-origin: left; transition: transform var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); }
.product-card:hover::before { transform: scaleX(1); }
.product-icon {
  width: 48px; height: 48px; color: var(--brand-500);
  background: rgba(27,86,213,.08); border-radius: 12px;
  display: grid; place-items: center; margin-bottom: 18px;
}
.product-icon svg { width: 28px; height: 28px; }
.product-tag {
  display: inline-block; font-size: 11.5px; letter-spacing: 2px;
  background: rgba(14,42,92,.08); color: var(--brand-700);
  padding: 3px 9px; border-radius: 4px; font-weight: 600; margin-bottom: 12px;
}
.product-card h3 {
  font-size: 20px; margin: 0 0 10px; color: var(--brand-800);
  font-weight: 700;
}
.product-card p { color: var(--ink-soft); font-size: 14.5px; margin: 0 0 14px; }
.product-meta {
  font-size: 12.5px; color: var(--mute); letter-spacing: .5px;
  border-top: 1px dashed var(--line); padding-top: 14px;
}
.product-features { list-style: none; padding: 0; margin: 10px 0 14px; font-size: 13.5px; color: var(--ink-soft); }
.product-features li { padding: 3px 0; }

.product-new {
  background: linear-gradient(160deg, #f6faff 0%, #fff 60%);
  border: 1px solid rgba(27,86,213,.25);
  box-shadow: 0 10px 30px -16px rgba(27,86,213,.4);
  grid-column: span 2;
}
.product-new .product-icon { background: linear-gradient(135deg, var(--brand-500), var(--cyan)); color: #fff; }
.ribbon {
  position: absolute; top: 18px; right: -36px;
  background: linear-gradient(135deg, var(--accent), #ff7a59);
  color: #fff; font-size: 11px; font-weight: 700; letter-spacing: 3px;
  padding: 4px 40px; transform: rotate(35deg);
  box-shadow: 0 4px 10px -2px rgba(0,0,0,.2);
}

/* ===== Scenarios ===== */
.scenarios-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.scn {
  background: #fff; border-radius: var(--radius); padding: 32px 26px;
  border: 1px solid var(--line); transition: var(--transition);
  position: relative; overflow: hidden;
}
.scn::after {
  content: ""; position: absolute; top: 0; right: 0; width: 120px; height: 120px;
  background: radial-gradient(circle at 80% 20%, rgba(27,86,213,.12), transparent 70%);
  transition: transform var(--transition);
}
.scn:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.scn:hover::after { transform: scale(1.5); }
.scn-num { font-family: "Inter", sans-serif; font-size: 13px; color: var(--brand-500); letter-spacing: 3px; margin-bottom: 14px; }
.scn h4 { font-size: 20px; margin: 0 0 10px; color: var(--brand-800); font-weight: 700; }
.scn p { font-size: 14px; color: var(--ink-soft); margin: 0; }
.scn[data-theme="a"] { border-top: 3px solid #c93131; }
.scn[data-theme="b"] { border-top: 3px solid #e98414; }
.scn[data-theme="c"] { border-top: 3px solid #8a6a3a; }
.scn[data-theme="d"] { border-top: 3px solid #4a6098; }
.scn[data-theme="e"] { border-top: 3px solid #2b7aa4; }
.scn[data-theme="f"] { border-top: 3px solid #8a4bc4; }

/* ===== Platform ===== */
.platform-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.plat-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius); padding: 32px 28px;
  backdrop-filter: blur(6px);
  transition: var(--transition);
}
.plat-card:hover { transform: translateY(-4px); border-color: rgba(0,194,255,.5); background: rgba(255,255,255,.08); }
.plat-head { margin-bottom: 16px; }
.plat-tag {
  display: inline-block; padding: 4px 12px; border-radius: 4px;
  background: rgba(0,194,255,.18); color: var(--cyan);
  font-size: 12px; letter-spacing: 2px; font-weight: 600;
}
.plat-card h3 { font-size: 22px; margin: 0 0 10px; font-weight: 700; }
.plat-card p { color: rgba(255,255,255,.78); font-size: 14.5px; margin: 0 0 18px; }
.plat-metrics {
  display: grid; gap: 8px; padding-top: 18px;
  border-top: 1px dashed rgba(255,255,255,.18);
}
.plat-metrics div { font-size: 13.5px; color: rgba(255,255,255,.75); }
.plat-metrics b { color: var(--cyan); font-size: 18px; font-family: "Inter", sans-serif; margin-right: 8px; }

/* ===== Footprint ===== */
.regions {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 48px;
}
.region {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; background: #fff;
  transition: var(--transition);
}
.region:hover { border-color: var(--brand-500); transform: translateY(-3px); box-shadow: var(--shadow-1); }
.region-flag { font-size: 24px; color: var(--accent); margin-bottom: 6px; }
.region:nth-child(1) .region-flag { color: var(--accent); }
.region:nth-child(n+2) .region-flag { color: var(--brand-500); }
.region-name { font-size: 20px; font-weight: 700; color: var(--brand-800); margin-bottom: 4px; }
.region-desc { font-size: 13.5px; color: var(--mute); }

.fund-ribbon {
  background: linear-gradient(135deg, var(--brand-900), var(--brand-700));
  color: #fff; border-radius: var(--radius);
  padding: 36px 40px; box-shadow: var(--shadow-2);
}
.fr-title { font-size: 14px; letter-spacing: 3px; color: var(--cyan-soft); margin-bottom: 18px; }
.fr-items { display: grid; gap: 10px; }
.fr-item {
  display: grid; grid-template-columns: 100px 120px 1fr; align-items: center;
  padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.12); gap: 16px;
}
.fr-item:last-child { border-bottom: 0; }
.fr-round { font-weight: 700; color: #fff; }
.fr-amt { font-family: "Inter", sans-serif; font-size: 20px; color: var(--cyan); font-weight: 700; }
.fr-inv { font-size: 13.5px; color: rgba(255,255,255,.78); }
.fr-item.hl .fr-round { color: var(--gold); }
.fr-item.hl .fr-amt { color: var(--gold); }

/* ===== Contact ===== */
.contact-wrap {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center;
  color: #fff;
}
.contact-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius); padding: 32px 30px;
  backdrop-filter: blur(8px);
}
.c-row {
  display: flex; gap: 14px; padding: 12px 0;
  border-bottom: 1px dashed rgba(255,255,255,.18);
  align-items: flex-start;
}
.c-row:last-of-type { border-bottom: 0; margin-bottom: 12px; }
.c-k { min-width: 60px; font-size: 12px; letter-spacing: 2px; color: var(--cyan-soft); padding-top: 3px; }
.c-v { color: #fff; font-size: 14.5px; }
.contact-card .btn { width: 100%; justify-content: center; margin-top: 8px; }

/* ===== Footer ===== */
.footer {
  background: var(--brand-900); color: rgba(255,255,255,.72);
  padding: 40px 0;
}
.foot-inner {
  display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap;
}
.foot-brand { font-weight: 800; font-size: 18px; color: #fff; }
.foot-slogan { font-size: 13px; letter-spacing: 3px; color: rgba(255,255,255,.55); margin-top: 4px; }
.foot-links { display: flex; gap: 20px; }
.foot-links a { font-size: 14px; color: rgba(255,255,255,.72); }
.foot-links a:hover { color: #fff; }
.foot-copy { font-size: 12px; color: rgba(255,255,255,.45); }

/* ===== Reveal anim ===== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.on { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; margin-left: auto; }
  .nav.open .nav-links {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; padding: 20px 28px; border-bottom: 1px solid var(--line);
  }
  .nav.open .nav-links a::after { display: none; }
  .grid-2, .contact-wrap { grid-template-columns: 1fr; gap: 40px; }
  .values-grid, .products-grid, .scenarios-grid, .platform-grid, .regions {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-new { grid-column: span 2; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px 0; }
  .stat + .stat:nth-child(3)::before { display: none; }
  .section { padding: 80px 0; }
}
@media (max-width: 640px) {
  .values-grid, .products-grid, .scenarios-grid, .platform-grid, .regions {
    grid-template-columns: 1fr;
  }
  .product-new { grid-column: span 1; }
  .fr-item { grid-template-columns: 1fr; gap: 4px; }
  .hero-content { padding: 110px 20px 60px; }
  .hero-sub { letter-spacing: .2em; }
  .nav-cta { display: none; }
  .brand-name { display: none; }
  .fund-ribbon { padding: 24px 22px; }
}