:root {
  --paper: #f8f4ed;
  --white: #fffdf9;
  --ink: #112d58;
  --ink-deep: #0b2348;
  --blue: #2563d8;
  --blue-soft: #eaf4fb;
  --coral: #ff5b4a;
  --orange: #ff8a3d;
  --text: #4f5c6b;
  --line: #d7e1ea;
  --muted: #738094;
  --shadow: 0 24px 70px rgba(17, 45, 88, 0.13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Avenir Next", Avenir, Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
::selection { color: white; background: var(--coral); }

.site-header {
  position: relative;
  z-index: 20;
  min-height: 82px;
  padding: 14px clamp(24px, 4.2vw, 72px);
  display: grid;
  grid-template-columns: 190px 1fr auto;
  align-items: center;
  gap: 32px;
  border-bottom: 1px solid rgba(17, 45, 88, 0.11);
  background: rgba(255, 253, 249, 0.94);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; flex-direction: column; width: max-content; line-height: 1; }
.brand-word { font-size: 25px; font-weight: 800; letter-spacing: .24em; }
.brand-cn { margin-top: 7px; font-size: 13px; font-weight: 700; letter-spacing: .28em; }
.main-nav { display: flex; justify-content: center; gap: clamp(22px, 3.6vw, 58px); }
.main-nav a, .header-legal {
  position: relative;
  padding: 10px 0;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
}
.main-nav a span, .header-legal span { margin-left: 4px; color: var(--muted); font-size: 12px; font-weight: 500; }
.main-nav a::after, .header-legal::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: 3px;
  height: 2px;
  background: var(--coral);
  transition: right .2s ease;
}
.main-nav a:hover::after, .main-nav a:focus-visible::after,
.header-legal:hover::after, .header-legal:focus-visible::after { right: 0; }

.hero {
  min-height: 680px;
  padding: 68px clamp(24px, 4.2vw, 72px) 56px;
  display: grid;
  grid-template-columns: minmax(420px, .95fr) minmax(560px, 1.05fr);
  gap: clamp(36px, 5vw, 82px);
  align-items: center;
  background:
    radial-gradient(circle at 82% 12%, rgba(79, 175, 230, .2), transparent 34%),
    linear-gradient(120deg, #fbf8f3 0%, #fffdf9 54%, #eff8fc 100%);
  overflow: hidden;
}
.eyebrow {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--ink-deep);
  font-size: clamp(52px, 5.25vw, 82px);
  line-height: .99;
  letter-spacing: -.055em;
  font-weight: 800;
}
.hero h1 span {
  display: inline-block;
  margin-top: 10px;
  color: var(--coral);
  background: linear-gradient(90deg, var(--coral), var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-cn { margin: 26px 0 24px; font-size: clamp(28px, 2.8vw, 42px); font-weight: 750; letter-spacing: .04em; }
.hero-lead { max-width: 650px; margin: 0; color: var(--text); font-size: 17px; line-height: 1.7; }
.hero-lead-cn { margin-top: 8px; font-size: 15px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button {
  min-height: 55px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 10px;
  font-size: 15px;
  font-weight: 750;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.button span { margin-left: 5px; font-weight: 600; }
.button-primary { color: white; border: 0; background: linear-gradient(120deg, var(--coral), var(--orange)); box-shadow: 0 13px 30px rgba(255, 91, 74, .2); }
.button:hover, .button:focus-visible { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(17, 45, 88, .18); }
.button-secondary:hover, .button-secondary:focus-visible { color: white; background: var(--ink); }

.hero-visual { position: relative; min-height: 555px; }
.product-row { position: absolute; inset: 0 0 118px 70px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.product-card {
  position: relative;
  min-width: 0;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(17, 45, 88, .08);
  background: white;
  box-shadow: 0 16px 44px rgba(17, 45, 88, .1);
}
.product-card:nth-child(2) { transform: translateY(22px); }
.product-card:nth-child(3) { transform: translateY(6px); }
.product-card img { width: 100%; height: 100%; object-fit: cover; }
.product-label {
  position: absolute;
  z-index: 2;
  top: 14px; left: 14px;
  min-width: 92px;
  padding: 9px 10px;
  display: flex;
  flex-direction: column;
  border-radius: 10px;
  color: var(--ink);
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(10px);
}
.product-label strong { font-size: 13px; }
.product-label span { margin-top: 2px; font-size: 11px; color: var(--muted); }
.dashboard-card {
  position: absolute;
  z-index: 4;
  left: 0; right: 8%; bottom: 0;
  padding: 20px;
  border: 1px solid rgba(17, 45, 88, .1);
  border-radius: 20px;
  background: rgba(255, 255, 255, .96);
  box-shadow: var(--shadow);
}
.dashboard-heading { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.dashboard-heading div { display: flex; flex-direction: column; }
.dashboard-heading strong { font-size: 15px; }
.dashboard-heading span { margin-top: 2px; color: var(--muted); font-size: 12px; }
.dashboard-heading small { padding: 6px 9px; border-radius: 8px; color: var(--blue); background: var(--blue-soft); }
.metric-grid { margin-top: 15px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.metric-grid > div { min-width: 0; padding: 10px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 10px; }
.metric-grid span, .metric-grid small { color: var(--muted); font-size: 10px; }
.metric-grid strong { margin: 5px 0 3px; color: var(--blue); font-size: 13px; }
.chart-area { margin-top: 14px; display: grid; grid-template-columns: 130px 1fr; align-items: end; gap: 14px; }
.chart-copy { display: flex; flex-direction: column; font-size: 12px; }
.chart-copy span { color: var(--muted); font-size: 11px; }
.chart-bars { height: 64px; padding: 7px 8px 0; display: flex; align-items: flex-end; gap: 8%; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.chart-bars i { flex: 1; min-width: 6px; border-radius: 4px 4px 0 0; background: linear-gradient(var(--blue), #8ebaf4); animation: bar-in .7s ease both; transform-origin: bottom; }
.chart-bars i:nth-child(even) { background: linear-gradient(var(--coral), #ffb092); }

.trust-strip { padding: 0 clamp(24px, 4.2vw, 72px); min-height: 120px; display: grid; grid-template-columns: repeat(3, 1fr); align-items: center; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--white); }
.trust-strip p { margin: 0; padding: 14px 30px; text-align: center; font-size: 18px; font-weight: 750; }
.trust-strip p + p { border-left: 1px solid var(--line); }
.trust-strip span { margin-left: 6px; font-size: 15px; font-weight: 600; color: var(--muted); }

.section { padding: 112px clamp(24px, 7vw, 120px); }
.section-intro { max-width: 800px; }
.section h2, .contact-section h2 {
  margin: 0;
  color: var(--ink-deep);
  font-size: clamp(38px, 4vw, 64px);
  line-height: 1.08;
  letter-spacing: -.045em;
}
.section-title-zh { margin: 13px 0 0; color: var(--coral); font-size: clamp(22px, 2vw, 31px); font-weight: 700; }
.commerce-section { background: var(--paper); }
.commerce-grid { margin-top: 62px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.commerce-grid article { padding: 34px clamp(20px, 2.6vw, 42px) 42px; }
.commerce-grid article + article { border-left: 1px solid var(--line); }
.category-number, .cap-number { color: var(--coral); font-size: 12px; font-weight: 800; letter-spacing: .15em; }
.commerce-grid h3, .capability-grid h3 { margin: 46px 0 3px; color: var(--ink); font-size: 22px; }
.card-zh { margin: 0 0 20px; color: var(--blue); font-weight: 650; }
.commerce-grid article > p:not(.card-zh):not(.card-copy-zh), .capability-grid article > p:not(.card-zh):not(.card-copy-zh) { margin: 0; color: var(--text); line-height: 1.65; }
.card-copy-zh { margin: 10px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

.platform-section { color: white; background: var(--ink-deep); }
.platform-section .eyebrow { color: #8db8ff; }
.platform-section h2 { color: white; }
.platform-section .section-title-zh { color: #ff8c75; }
.platform-header { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(44px, 8vw, 140px); align-items: end; }
.platform-summary { margin: 0; color: #c7d5e7; font-size: 16px; line-height: 1.75; }
.platform-summary span { display: block; margin-top: 12px; color: #91a8c4; font-size: 14px; }
.capability-grid { margin-top: 68px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.capability-grid article { min-height: 340px; padding: 30px; border: 1px solid rgba(255,255,255,.13); border-radius: 18px; background: rgba(255,255,255,.045); }
.capability-grid article:hover { background: rgba(255,255,255,.075); }
.capability-grid h3 { margin-top: 72px; color: white; }
.capability-grid .card-zh { color: #91c6ff; }
.capability-grid article > p:not(.card-zh):not(.card-copy-zh) { color: #c7d5e7; }
.capability-grid .card-copy-zh { color: #91a8c4; }
.authorization-flow { margin-top: 60px; padding: 28px; display: grid; grid-template-columns: 1fr 32px 1fr 32px 1fr 32px 1fr; align-items: center; border-radius: 18px; background: white; color: var(--ink); }
.authorization-flow div { display: grid; grid-template-columns: 30px 1fr; gap: 2px 12px; align-items: center; }
.authorization-flow div > span { grid-row: span 2; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--coral); font-weight: 800; }
.authorization-flow strong { font-size: 13px; }
.authorization-flow small { color: var(--muted); }
.authorization-flow i { height: 1px; background: var(--line); }

.about-section { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(60px, 10vw, 170px); background: var(--white); }
.about-copy { color: var(--text); line-height: 1.8; }
.about-copy p { margin: 0 0 14px; }
.about-copy p:nth-child(even) { color: var(--muted); font-size: 14px; }
.contact-section { margin: 0 clamp(24px, 4.2vw, 72px) 72px; padding: 70px clamp(28px, 5vw, 78px); display: grid; grid-template-columns: .9fr 1.1fr; gap: 60px; align-items: center; border-radius: 26px; color: white; background: linear-gradient(120deg, var(--blue), var(--ink-deep)); }
.contact-section .eyebrow { color: #add1ff; }
.contact-section h2 { color: white; }
.contact-section p:not(.eyebrow) { color: #d9e7f7; line-height: 1.7; }
.contact-email { padding: 24px 0; display: grid; grid-template-columns: 1fr auto; border-top: 1px solid rgba(255,255,255,.35); border-bottom: 1px solid rgba(255,255,255,.35); }
.contact-email span { grid-column: 1; color: #add1ff; font-size: 12px; text-transform: uppercase; letter-spacing: .12em; }
.contact-email strong { grid-column: 1; margin-top: 9px; font-size: clamp(18px, 2vw, 29px); overflow-wrap: anywhere; }
.contact-email b { grid-column: 2; grid-row: 1 / span 2; align-self: center; font-size: 32px; }

.site-footer { padding: 64px clamp(24px, 4.2vw, 72px) 36px; display: grid; grid-template-columns: 1fr auto; gap: 50px; border-top: 1px solid var(--line); background: #f0ebe3; }
.footer-brand { margin-bottom: 22px; }
.site-footer p { color: var(--text); font-size: 13px; line-height: 1.7; }
.footer-links { display: flex; flex-direction: column; gap: 12px; align-items: flex-end; font-size: 13px; font-weight: 650; }
.footer-links a:hover { color: var(--coral); }
.footer-note { grid-column: 1 / -1; max-width: 900px; margin: 30px 0 0; padding-top: 24px; border-top: 1px solid rgba(17,45,88,.12); }

.legal-shell { min-height: 70vh; }
.legal-hero { padding: 90px clamp(24px, 14vw, 250px) 70px; color: white; background: linear-gradient(120deg, var(--ink-deep), var(--blue)); }
.legal-hero .eyebrow { color: #b9d8ff; }
.legal-hero h1 { margin: 0; font-size: clamp(48px, 6vw, 86px); line-height: 1; letter-spacing: -.05em; }
.legal-title-zh { margin: 18px 0 30px; color: #ff9b88; font-size: clamp(26px, 3vw, 42px); font-weight: 700; }
.legal-hero > p:not(.eyebrow):not(.legal-title-zh):not(.effective) { max-width: 850px; color: #dce9f8; font-size: 17px; line-height: 1.7; }
.legal-hero .effective { margin-top: 30px; color: #b9cae0; font-size: 13px; }
.legal-content { max-width: 980px; margin: 0 auto; padding: 72px 24px 110px; }
.legal-content section { padding: 32px 0; border-bottom: 1px solid var(--line); }
.legal-content h2 { margin: 0 0 18px; color: var(--ink); font-size: 24px; }
.legal-content p, .legal-content li { color: var(--text); font-size: 15px; line-height: 1.8; }
.legal-content ul { margin: 16px 0; padding-left: 22px; }
.legal-content a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.legal-content .zh { padding: 13px 15px; border-left: 3px solid var(--coral); color: #667385; background: rgba(255,255,255,.52); }
.deletion-callout { margin-bottom: 18px; padding: 30px !important; border: 1px solid #bcd6ff !important; border-radius: 18px; background: var(--blue-soft); }

@keyframes bar-in { from { transform: scaleY(0); opacity: .2; } to { transform: scaleY(1); opacity: 1; } }

@media (max-width: 1120px) {
  .site-header { grid-template-columns: 170px 1fr; }
  .header-legal { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { max-width: 780px; }
  .hero-visual { min-height: 600px; }
  .product-row { left: 16%; }
  .dashboard-card { right: 8%; left: 8%; }
  .authorization-flow { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .authorization-flow i { display: none; }
}

@media (max-width: 820px) {
  .site-header { position: static; padding: 14px 20px; grid-template-columns: 1fr; gap: 9px; }
  .brand-word { font-size: 20px; }
  .main-nav { justify-content: flex-start; gap: 22px; overflow-x: auto; padding: 3px 0 0; }
  .main-nav a { font-size: 12px; }
  .hero { padding: 54px 22px 44px; min-height: auto; }
  .hero h1 { font-size: clamp(47px, 13vw, 70px); }
  .hero-cn { font-size: 28px; }
  .hero-visual { min-height: 520px; }
  .product-row { inset: 0 0 160px 0; gap: 8px; }
  .product-label { top: 8px; left: 8px; min-width: 0; padding: 7px; }
  .dashboard-card { left: 0; right: 0; padding: 15px; }
  .metric-grid { gap: 5px; }
  .chart-area { grid-template-columns: 96px 1fr; }
  .trust-strip { grid-template-columns: 1fr; padding: 20px; }
  .trust-strip p + p { border-left: 0; border-top: 1px solid var(--line); }
  .section { padding: 80px 22px; }
  .commerce-grid, .capability-grid, .platform-header, .about-section, .contact-section { grid-template-columns: 1fr; }
  .commerce-grid article + article { border-left: 0; border-top: 1px solid var(--line); }
  .capability-grid article { min-height: 280px; }
  .authorization-flow { grid-template-columns: 1fr; }
  .contact-section { margin: 0 16px 40px; padding: 44px 24px; gap: 34px; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { align-items: flex-start; }
  .legal-hero { padding: 64px 22px 52px; }
  .legal-content { padding: 40px 20px 80px; }
}

@media (max-width: 520px) {
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-visual { min-height: 460px; }
  .product-row { bottom: 200px; }
  .product-card:nth-child(2), .product-card:nth-child(3) { transform: none; }
  .dashboard-heading { flex-direction: column; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric-grid > div { display: grid; grid-template-columns: 1fr auto; }
  .metric-grid strong { grid-column: 2; grid-row: 1 / span 2; }
  .chart-area { display: none; }
  .authorization-flow { padding: 18px; }
  .contact-email { grid-template-columns: 1fr; }
  .contact-email b { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}