:root {
  --bg: #061220;
  --bg-deep: #040d19;
  --band: #163b5f;
  --card: #172434;
  --card-2: #1b2a3d;
  --line: rgba(255, 255, 255, .10);
  --text: #eef6ff;
  --muted: #9eb2c8;
  --blue: #38c9ff;
  --cyan: #24e2f0;
  --green: #16efad;
  --purple: #5b3bcf;
  --red: #ff6f76;
  --shadow: 0 22px 70px rgba(0,0,0,.32);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg-deep); }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: var(--bg-deep);
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, select { font: inherit; }
.shell { width: min(1120px, calc(100% - 42px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(12, 25, 42, .96);
  border-bottom: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(18px);
}
.header-inner {
  min-height: 56px;
  display: grid;
  grid-template-columns: 230px 1fr auto;
  align-items: center;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand img { width: 38px; height: 38px; }
.brand strong { display: block; font-size: 17px; line-height: 1.05; letter-spacing: .02em; }
.brand em { display: block; font-style: normal; font-size: 10px; letter-spacing: .08em; color: var(--muted); margin-top: 2px; }
.site-nav { display: flex; justify-content: center; gap: 28px; font-size: 14px; color: rgba(238,246,255,.86); }
.site-nav a { transition: .18s ease; }
.site-nav a:hover { color: var(--cyan); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.language-pill {
  min-width: 132px;
  height: 32px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 7px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0 9px;
  background: rgba(255,255,255,.04);
  color: #d7e6f5;
}
.language-pill select {
  width: 100%;
  color: #d7e6f5;
  background: transparent;
  border: 0;
  outline: 0;
  font-size: 13px;
  cursor: pointer;
}
.language-pill option { color: #0a1524; }
.consult-btn,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  height: 36px;
  min-width: 104px;
  padding: 0 19px;
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  border: 1px solid rgba(255,255,255,.12);
}
.consult-btn,
.btn.primary { background: linear-gradient(135deg, #2cd6ff 0%, #13e6b5 100%); box-shadow: 0 10px 28px rgba(29, 217, 220, .20); }
.btn.ghost { background: rgba(255,255,255,.12); }
.nav-toggle { display: none; background: transparent; border: 0; width: 42px; height: 42px; }
.nav-toggle span { display: block; height: 2px; margin: 6px 7px; border-radius: 99px; background: #fff; }

.section { padding: 96px 0; }
.section-dark { background: var(--bg-deep); }
.hero {
  position: relative;
  min-height: 815px;
  display: grid;
  place-items: center;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 50% 40%, rgba(33, 74, 167, .54) 0%, rgba(17, 28, 95, .52) 33%, rgba(8, 17, 39, .94) 78%),
    linear-gradient(135deg, #090f2c 0%, #171771 43%, #230f5c 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 210px 210px;
  opacity: .2;
  z-index: -1;
}
.hero-bg { position: absolute; inset: 0; z-index: -1; opacity: .78; }
.beam { position: absolute; height: 18px; width: 70vw; background: rgba(180, 57, 194, .34); filter: blur(2px); transform-origin: left center; border-radius: 99px; }
.beam-a { left: -5vw; top: 48%; transform: rotate(10deg); }
.beam-b { left: 20vw; top: 18%; transform: rotate(52deg); width: 45vw; opacity: .55; }
.beam-c { right: -20vw; bottom: 28%; transform: rotate(16deg); width: 65vw; opacity: .62; }
.node { position: absolute; border-radius: 50%; background: rgba(177, 54, 195, .52); box-shadow: 0 0 44px rgba(177, 54, 195, .35); }
.n1 { width: 122px; height: 122px; right: 10%; top: 24%; }
.n2 { width: 86px; height: 86px; right: 6%; bottom: 27%; }
.n3 { width: 56px; height: 56px; left: 34%; top: 8%; }
.n4 { width: 42px; height: 42px; left: 52%; bottom: 13%; }
.n5 { width: 30px; height: 30px; right: 17%; top: 47%; }
.hero-inner { text-align: center; transform: translateY(-16px); }
.hero h1 { margin: 0; font-size: clamp(42px, 5vw, 66px); line-height: 1.08; letter-spacing: -.04em; font-weight: 900; text-shadow: 0 14px 38px rgba(0,0,0,.28); }
.hero h1 strong { display: inline-block; font-weight: 900; background: linear-gradient(90deg, #4bbcff 0%, #14ebaa 92%); -webkit-background-clip: text; color: transparent; }
.hero p { margin: 18px 0 0; font-size: 18px; color: #c6d8ef; }
.hero-actions { margin: 38px 0 42px; display: flex; justify-content: center; gap: 14px; }
.hero-stats { display: flex; justify-content: center; gap: min(11vw, 130px); }
.hero-stats div { min-width: 110px; }
.hero-stats strong { display: block; font-size: 38px; line-height: 1; color: #35caff; }
.hero-stats div:nth-child(2) strong { color: var(--green); }
.hero-stats span { display: block; margin-top: 7px; font-size: 12px; color: #aac0d5; }

.value-block { padding: 65px 0 122px; min-height: 410px; background: var(--band); }
.section-head { text-align: center; }
.section-head.compact { margin-bottom: 52px; }
.section-head h2 { margin: 0 0 14px; font-size: clamp(34px, 4vw, 46px); line-height: 1.12; letter-spacing: -.03em; }
.section-head p { margin: 0; color: var(--muted); font-size: 17px; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.mini-card,
.solution-card,
.case-card,
.resource-card,
.faq-card,
.contact-card {
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.045));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.mini-card { padding: 28px; min-height: 184px; }
.mini-card .icon { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; background: linear-gradient(135deg, var(--blue), var(--green)); margin-bottom: 18px; }
.mini-card h3 { margin: 0 0 10px; font-size: 22px; }
.mini-card p { margin: 0; color: var(--muted); }

.top-band { background: linear-gradient(90deg, #112b49, #173f65); padding: 74px 0 66px; margin: -96px 0 70px; }
.solutions-stack,
.case-stack { display: grid; gap: 86px; }
.solution-card { padding: 0; background: transparent; border: 0; box-shadow: none; }
.solution-title { display: flex; align-items: center; gap: 15px; margin-bottom: 42px; }
.square-icon { width: 50px; height: 50px; flex: 0 0 auto; border-radius: 12px; display: inline-grid; place-items: center; background: linear-gradient(135deg, var(--blue), var(--green)); box-shadow: 0 14px 28px rgba(25, 211, 219, .20); }
.square-icon.shield { background: linear-gradient(135deg, #3dd3ff, #17d9b5); }
.square-icon.small { width: 42px; height: 42px; border-radius: 10px; }
.solution-title h3 { margin: 0; font-size: clamp(28px, 3vw, 40px); line-height: 1.05; }
.solution-title p { margin: 5px 0 0; color: var(--blue); font-size: 16px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 96px; }
h4 { margin: 0 0 16px; font-size: 18px; }
ul { margin: 0; padding: 0; list-style: none; }
li { color: #c8d6e7; margin: 0 0 14px; }
.red-list li::before,
.green-list li::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 11px; transform: translateY(-1px); }
.red-list li::before { background: var(--red); }
.green-list li::before { background: var(--green); box-shadow: 0 0 0 3px rgba(22,239,173,.16); }
.effect-panel { margin-top: 46px; background: linear-gradient(180deg, rgba(36, 54, 77, .98), rgba(31, 45, 65, .98)); border: 1px solid rgba(255,255,255,.12); border-radius: 10px; min-height: 154px; display: grid; grid-template-columns: repeat(3, 1fr); align-items: center; text-align: center; position: relative; }
.effect-panel p { position: absolute; left: 0; right: 0; top: 18px; margin: 0; font-weight: 800; font-size: 20px; color: #fff; }
.effect-panel strong { display: block; color: var(--cyan); font-size: 44px; line-height: 1; margin-top: 28px; }
.effect-panel span { display: block; color: var(--muted); margin-top: 7px; }
.solution-card.thin { margin-top: 26px; }

.cases-section { padding-bottom: 128px; }
.case-stack { max-width: 920px; }
.case-card { padding: 28px 28px 24px; display: grid; grid-template-columns: 270px 1fr; gap: 36px; background: #1b2a3b; }
.tag { display: inline-flex; padding: 6px 15px; border-radius: 999px; background: rgba(48, 157, 241, .20); color: #62bfff; font-size: 13px; font-weight: 700; margin-bottom: 16px; }
.case-left h3 { margin: 0; font-size: 24px; }
.case-body h4 { margin: 0 0 8px; font-size: 16px; }
.case-body p { margin: 0 0 18px; color: #c9d6e6; }
.case-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
.case-metrics div { text-align: center; padding: 18px 8px; background: rgba(255,255,255,.045); border-radius: 7px; }
.case-metrics strong { display: block; color: var(--green); font-size: 24px; line-height: 1.05; }
.case-metrics span { display: block; color: #a9bad0; margin-top: 7px; font-size: 12px; }

.resources-section { padding-bottom: 120px; }
.resource-wrap { max-width: 1070px; }
.resource-group { margin-bottom: 78px; }
.group-title { display: flex; align-items: center; gap: 16px; margin-bottom: 26px; }
.group-title h3 { margin: 0; font-size: 30px; }
.resource-grid { display: grid; gap: 20px; }
.resource-grid.three { grid-template-columns: repeat(3, 1fr); }
.resource-grid.two { grid-template-columns: repeat(2, 1fr); }
.resource-card,
.faq-card { padding: 24px; background: #162232; box-shadow: none; }
.resource-card h4,
.faq-card h4 { margin: 0 0 12px; color: #fff; font-size: 18px; }
.resource-card p,
.faq-card p { margin: 0; color: #a9b8c9; min-height: 46px; }
.resource-card footer { margin-top: 26px; display: flex; align-items: center; justify-content: space-between; color: #8ea0b5; }
.resource-card a { background: rgba(58, 156, 239, .28); color: #6dc8ff; border-radius: 6px; padding: 8px 16px; font-weight: 700; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

.contact-section { background: var(--bg-deep); padding: 92px 0 70px; }
.contact-support-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 76px; align-items: start; }
.support-column h2 { margin: 0 0 34px; font-size: clamp(34px, 4vw, 48px); line-height: 1.12; letter-spacing: -.03em; }
.contact-row { display: grid; grid-template-columns: 62px 1fr; gap: 20px; align-items: start; margin-bottom: 36px; }
.contact-row h3 { margin: 0 0 8px; font-size: 20px; color: #fff; }
.contact-row p { margin: 0; color: #d7e6f5; font-size: 18px; line-height: 1.55; }
.contact-row a { color: #fff; }
.contact-icon { width: 50px; height: 50px; border-radius: 12px; display: inline-grid; place-items: center; font-size: 24px; font-weight: 800; color: #fff; background: linear-gradient(135deg, #38c9ff, #18dfc4); box-shadow: 0 14px 28px rgba(25, 211, 219, .16); }
.contact-icon.emergency-icon { background: linear-gradient(135deg, #ff4e3d, #ff8a1d); box-shadow: 0 14px 28px rgba(255, 105, 42, .18); }
.contact-row.emergency { margin-bottom: 44px; }
.contact-row .hotline { margin-top: 2px; font-size: 22px; font-weight: 900; color: #ff7277; }
.contact-row .hotline a { color: #ff7277; }
.contact-row .muted { color: #8396ac; font-size: 16px; margin-top: 2px; }
.service-box,
.response-card { border: 1px solid rgba(99, 146, 192, .38); border-radius: 13px; background: rgba(20, 45, 70, .72); }
.service-box { margin-top: 18px; padding: 28px 34px; }
.service-box h3 { margin: 0 0 24px; display: flex; align-items: center; gap: 10px; font-size: 20px; }
.service-box h3 span:first-child { color: #38c9ff; }
.service-box p { margin: 0 0 10px; color: #d7e6f5; font-size: 18px; }
.service-box p:last-child { margin-bottom: 0; }
.service-highlight, .service-highlight strong, .service-highlight span { color: var(--green) !important; }
.response-card { margin-top: 26px; padding: 30px 34px; }
.response-card h3 { margin: 0 0 16px; font-size: 20px; }
.response-card p { margin: 0; color: #c8d7e8; font-size: 17px; line-height: 1.85; }
.eyebrow { margin: 0 0 12px; color: var(--green); font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }

.site-footer { background: #07111f; border-top: 1px solid rgba(255,255,255,.08); padding: 54px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.25fr .7fr 1.3fr .75fr; gap: 54px; padding-bottom: 42px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-grid h4 { margin: 0 0 15px; font-size: 16px; }
.footer-grid a { display: block; color: #9fb0c4; margin: 0 0 9px; }
.footer-grid p { color: #9fb0c4; margin: 0 0 8px; }
.footer-brand p { margin-top: 18px; max-width: 290px; }
.copyright { padding-top: 24px; text-align: center; color: #7e8ea2; font-size: 13px; }

@media (max-width: 980px) {
  .header-inner { grid-template-columns: 1fr auto; }
  .nav-toggle { display: inline-block; grid-column: 2; grid-row: 1; }
  .site-nav { display: none; position: absolute; top: 56px; left: 0; right: 0; background: #0c192a; padding: 18px 22px 22px; border-bottom: 1px solid rgba(255,255,255,.10); flex-direction: column; gap: 12px; }
  .site-nav.open { display: flex; }
  .header-actions { grid-column: 1 / -1; justify-content: flex-end; padding-bottom: 12px; }
  .hero { min-height: 720px; }
  .value-grid, .resource-grid.three, .resource-grid.two, .faq-grid, .two-col, .contact-grid, .contact-support-grid, .footer-grid { grid-template-columns: 1fr; }
  .case-card { grid-template-columns: 1fr; }
  .two-col { gap: 28px; }
  .footer-grid { gap: 30px; }
  .contact-support-grid { gap: 48px; }
  .contact-row { grid-template-columns: 52px 1fr; gap: 16px; }
  .contact-row p, .service-box p { font-size: 16px; }
  .contact-row .hotline { font-size: 19px; }
  .service-box, .response-card { padding: 24px; }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 28px, 1120px); }
  .header-actions { align-items: stretch; flex-direction: column; }
  .language-pill, .consult-btn { width: 100%; }
  .hero h1 { font-size: 38px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-stats { gap: 18px; }
  .hero-stats strong { font-size: 28px; }
  .effect-panel { grid-template-columns: 1fr; padding: 64px 18px 22px; gap: 16px; }
  .effect-panel p { top: 22px; }
  .effect-panel strong { margin-top: 0; font-size: 34px; }
  .case-metrics { grid-template-columns: 1fr; }
  .top-band { margin-top: -96px; }
}