/* =========================================================
   519IOT ZHIOT · 物联网官网（纯 HTML 版本）
   设计规范：深色数字控制台 / 数据网络风格
   ========================================================= */

:root {
  --bg: #04080f;
  --bg-soft: #0a1420;
  --surface: rgba(13, 26, 42, 0.72);
  --accent: #22d3ee;
  --accent-2: #38bdf8;
  --warn: #f59e0b;
  --text: #e2e8f0;
  --muted: #8aa0b8;
  --line: rgba(34, 211, 238, 0.16);
  --line-soft: rgba(148, 163, 184, 0.12);

  --font-display: "Orbitron", "DIN Alternate", "Bahnschrift", "Microsoft YaHei",
    sans-serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
    "Helvetica Neue", sans-serif;

  --container: 1280px;
  --nav-h: 72px;
  --radius: 16px;
}

/* ------------------------- Reset & Base ------------------------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

::selection {
  background: rgba(34, 211, 238, 0.28);
  color: #fff;
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: #060d17;
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #164e63, #0e7490);
  border-radius: 8px;
  border: 2px solid #060d17;
}
::-webkit-scrollbar-thumb:hover {
  background: #22d3ee;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* --------------------------- 通用组件 --------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before {
  content: "";
  width: 2rem;
  height: 1px;
  background: rgba(34, 211, 238, 0.7);
}
.eyebrow-num {
  color: rgba(34, 211, 238, 0.6);
}

.text-gradient {
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.glass {
  background: linear-gradient(
    160deg,
    rgba(19, 36, 56, 0.75),
    rgba(8, 16, 28, 0.72)
  );
  border: 1px solid var(--line-soft);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.hud {
  position: relative;
}
.hud::before,
.hud::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--accent);
  border-style: solid;
  opacity: 0.7;
  pointer-events: none;
  z-index: 1;
}
.hud::before {
  top: -1px;
  left: -1px;
  border-width: 1px 0 0 1px;
}
.hud::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 1px 1px 0;
}

/* --------------------------- 按钮 --------------------------- */
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #041018;
  box-shadow: 0 0 0 rgba(34, 211, 238, 0);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.35);
}
.btn-ghost {
  border: 1px solid rgba(34, 211, 238, 0.4);
  color: var(--accent);
  background: transparent;
}
.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: rgba(34, 211, 238, 0.1);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.28);
}
.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

/* --------------------------- 导航栏 --------------------------- */
.navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background 0.3s ease, border-color 0.3s ease,
    box-shadow 0.3s ease;
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(4, 8, 15, 0.85);
  border-bottom-color: rgba(34, 211, 238, 0.1);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.logo-mark {
  display: grid;
  place-items: center;
}
.logo-mark svg {
  width: 40px;
  height: 40px;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.logo-cn {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
}
.logo-en {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.42em;
  color: var(--accent);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 1.75rem;
}
.nav-link {
  position: relative;
  padding: 0.5rem 0;
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-link:hover {
  color: #fff;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 1px;
  width: 0;
  background: var(--accent);
  transition: width 0.3s;
}
.nav-link.active {
  color: var(--accent);
}
.nav-link.active::after,
.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.menu-btn {
  display: grid;
  gap: 5px;
  width: 44px;
  height: 44px;
  place-content: center;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 10px;
  background: transparent;
  transition: background 0.2s;
}
.menu-btn:hover {
  background: rgba(34, 211, 238, 0.1);
}
.menu-icon {
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
body.menu-open .menu-icon:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
body.menu-open .menu-icon:nth-child(2) {
  opacity: 0;
}
body.menu-open .menu-icon:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------- 移动端菜单 --------------------------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2rem;
  padding: 2rem;
  background: rgba(4, 8, 15, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s, visibility 0.3s;
}
body.menu-open .mobile-menu {
  visibility: visible;
  opacity: 1;
}
.mobile-menu li a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
}
.mobile-menu li a:hover {
  color: var(--accent);
}
.m-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--accent);
}
.m-cta {
  width: 100%;
}

/* --------------------------- Hero --------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(34, 211, 238, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(
    ellipse 80% 60% at 50% 40%,
    #000 30%,
    transparent 75%
  );
  mask-image: radial-gradient(
    ellipse 80% 60% at 50% 40%,
    #000 30%,
    transparent 75%
  );
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
}
.hero-glow-1 {
  left: -10rem;
  top: 25%;
  width: 480px;
  height: 480px;
  background: rgba(34, 211, 238, 0.1);
}
.hero-glow-2 {
  right: -8rem;
  bottom: 0;
  width: 420px;
  height: 420px;
  background: rgba(2, 132, 199, 0.1);
}
.hero-fade {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent, transparent, var(--bg));
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 10;
  padding-top: 8rem;
  padding-bottom: 7rem;
  display: grid;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.05);
  font-size: 0.875rem;
  color: var(--accent);
}

.dot-ping {
  position: relative;
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--accent);
}
.dot-ping::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: inherit;
  animation: ping 2.4s ease-out infinite;
}
.dot-ping.green {
  background: #34d399;
}
.dot-ping.small {
  width: 6px;
  height: 6px;
}

.hero h1 {
  margin-top: 1.75rem;
  font-size: clamp(2.6rem, 7vw, 4.5rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: #fff;
}

.hero-desc {
  margin-top: 1.75rem;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.0625rem;
}

.hero-cta {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-protocols {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}
.proto-label {
  margin-right: 0.25rem;
  font-size: 0.75rem;
  color: var(--muted);
}
.proto-chip {
  padding: 0.25rem 0.625rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.hero-scroll {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  transition: color 0.3s;
}
.hero-scroll:hover {
  color: var(--accent);
}
.hero-scroll span {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.4em;
}
.hero-scroll svg {
  animation: bounce 2s infinite;
}

/* --------------------------- HUD 状态卡 --------------------------- */
.hud-card {
  position: relative;
  width: 100%;
  max-width: 24rem;
  margin-inline: auto;
  padding: 1.5rem;
  border-radius: 16px;
  background: linear-gradient(
    160deg,
    rgba(19, 36, 56, 0.75),
    rgba(8, 16, 28, 0.72)
  );
  border: 1px solid var(--line-soft);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  animation: float 6s ease-in-out infinite;
}
.hud-card::before,
.hud-card::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--accent);
  border-style: solid;
  opacity: 0.7;
  pointer-events: none;
}
.hud-card::before {
  top: -1px;
  left: -1px;
  border-width: 1px 0 0 1px;
}
.hud-card::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 1px 1px 0;
}

.hud-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.hud-title {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--accent);
}
.hud-ok {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: #34d399;
}

.hud-rows {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.hud-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  background: rgba(7, 17, 32, 0.8);
}
.hud-row span {
  font-size: 0.875rem;
  color: var(--muted);
}
.hud-row b {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
}
.hud-row i {
  margin-left: 0.25rem;
  font-style: normal;
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(34, 211, 238, 0.7);
}

.hud-chart {
  margin-top: 1.25rem;
}
.hud-chart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
}
.hud-chart-head span {
  color: var(--muted);
}
.hud-chart-head b {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--accent);
}
.hud-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 56px;
}
.hud-bars span {
  flex: 1;
  border-radius: 2px;
  background: linear-gradient(to top, rgba(34, 211, 238, 0.3), var(--accent));
  animation: pulse-bar var(--du, 1.8s) ease-in-out infinite;
  animation-delay: var(--ad, 0ms);
}

.hud-foot {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.hud-sync {
  color: var(--accent);
}
.hud-cursor {
  margin-left: auto;
  width: 6px;
  height: 14px;
  background: var(--accent);
  animation: blink 1.1s step-end infinite;
}

/* --------------------------- 区块通用 --------------------------- */
.section {
  position: relative;
  padding: 6rem 0;
  scroll-margin-top: 96px;
}
.section.alt {
  background: rgba(10, 20, 32, 0.4);
}

.sec-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}
.sec-head-left {
  align-items: flex-start;
  text-align: left;
}
.sec-title {
  max-width: 48rem;
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.25;
  color: #fff;
}
.sec-desc {
  max-width: 40rem;
  color: var(--muted);
  font-size: 1rem;
}

/* --------------------------- 关于我们 --------------------------- */
.about-grid {
  display: grid;
  gap: 3rem;
}
.about-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.75rem;
}
.about-lead {
  color: var(--muted);
  font-size: 1.0625rem;
}
.about-lead strong {
  color: var(--accent);
  font-weight: 500;
}
.about-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.about-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--text);
}
.check-icon {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.15);
  color: var(--accent);
  font-size: 12px;
}
.about-tagline {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--muted);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.stat-card {
  padding: 1.5rem;
  border-radius: 16px;
  background: linear-gradient(
    160deg,
    rgba(19, 36, 56, 0.75),
    rgba(8, 16, 28, 0.72)
  );
  border: 1px solid var(--line-soft);
  transition: transform 0.3s, border-color 0.3s;
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 211, 238, 0.4);
}
.stat-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  color: #fff;
  transition: color 0.3s;
}
.stat-card:hover .stat-value {
  color: var(--accent);
}
.stat-suffix {
  margin-left: 0.25rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent);
}
.stat-label {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}
.stat-sub {
  margin-top: 0.25rem;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--muted);
}
.stat-bar {
  margin-top: 1rem;
  height: 2px;
  border-radius: 2px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
}
.stat-bar span {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: transform 1.8s ease-out;
}
.stat-card.in .stat-bar span {
  transform: scaleX(1);
}

/* --------------------------- 核心业务 --------------------------- */
.biz-grid {
  display: grid;
  gap: 1.5rem;
}
.biz-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.biz-card:hover {
  transform: translateY(-8px);
  border-color: rgba(34, 211, 238, 0.45);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.28);
}
.biz-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.biz-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.08);
  color: var(--accent);
  font-size: 1.625rem;
  transition: background 0.3s, box-shadow 0.3s;
}
.biz-card:hover .biz-icon {
  background: rgba(34, 211, 238, 0.15);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.28);
}
.biz-code {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: rgba(34, 211, 238, 0.5);
}
.biz-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}
.biz-card h3 em {
  display: block;
  margin-top: 0.25rem;
  font-style: normal;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--muted);
}
.biz-card > p {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
}
.biz-card ul {
  margin-top: auto;
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.biz-card ul li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text);
}
.biz-card ul li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 700;
}

/* --------------------------- 解决方案 --------------------------- */
.sol-grid {
  display: grid;
  gap: 1.5rem;
}
.sol-card {
  position: relative;
  padding: 1.75rem;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 17, 32, 0.8);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.sol-card:hover {
  transform: translateY(-8px);
  border-color: rgba(34, 211, 238, 0.45);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.28);
}
.sol-card::before {
  content: "";
  position: absolute;
  right: -4rem;
  top: -4rem;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.1);
  filter: blur(48px);
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}
.sol-card:hover::before {
  opacity: 1;
}
.sol-top {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.sol-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.06);
  color: var(--accent);
  font-size: 1.375rem;
  transition: background 0.3s;
}
.sol-card:hover .sol-icon {
  background: rgba(34, 211, 238, 0.12);
}
.sol-top h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
}
.sol-top em {
  display: block;
  font-style: normal;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--muted);
}
.sol-card > p {
  position: relative;
  font-size: 0.875rem;
  color: var(--muted);
}
.sol-tags {
  position: relative;
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.sol-tags span {
  padding: 0.25rem 0.625rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.75rem;
  color: var(--text);
  transition: border-color 0.3s;
}
.sol-card:hover .sol-tags span {
  border-color: rgba(34, 211, 238, 0.25);
}

/* --------------------------- 平台架构 --------------------------- */
.arch-wrap {
  max-width: 56rem;
  margin-inline: auto;
}
.arch-box {
  position: relative;
  padding: 1.5rem;
  border-radius: 16px;
}
.arch-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--accent);
}
.arch-flow {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.arch-flow b {
  color: var(--accent);
  animation: bounce 2s infinite;
}

.arch-layer {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.25rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(7, 17, 32, 0.8);
  transition: border-color 0.3s;
}
.arch-layer:hover {
  border-color: rgba(34, 211, 238, 0.4);
}
.arch-idx {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 10px;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
}
.arch-cyan .arch-idx {
  border: 1px solid rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.06);
  color: var(--accent);
}
.arch-blue .arch-idx {
  border: 1px solid rgba(56, 189, 248, 0.3);
  background: rgba(56, 189, 248, 0.06);
  color: #38bdf8;
}
.arch-amber .arch-idx {
  border: 1px solid rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.06);
  color: var(--warn);
}
.arch-white .arch-idx {
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}
.arch-name {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.arch-name h3 {
  font-size: 1.125rem;
  font-weight: 700;
}
.arch-cyan .arch-name h3 {
  color: var(--accent);
}
.arch-blue .arch-name h3 {
  color: #38bdf8;
}
.arch-amber .arch-name h3 {
  color: var(--warn);
}
.arch-white .arch-name h3 {
  color: #fff;
}
.arch-name em {
  font-style: normal;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--muted);
}
.arch-desc {
  font-size: 0.875rem;
  color: var(--muted);
}
.arch-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.arch-chips span {
  padding: 0.375rem 0.75rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.75rem;
  color: var(--text);
}
.arch-cyan .arch-chips span {
  border-color: rgba(34, 211, 238, 0.25);
  background: rgba(34, 211, 238, 0.06);
}
.arch-blue .arch-chips span {
  border-color: rgba(56, 189, 248, 0.25);
  background: rgba(56, 189, 248, 0.06);
}
.arch-amber .arch-chips span {
  border-color: rgba(245, 158, 11, 0.25);
  background: rgba(245, 158, 11, 0.06);
}

.arch-link {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 2rem;
}
.arch-line {
  position: absolute;
  top: 0;
  width: 1px;
  height: 1rem;
  background: rgba(34, 211, 238, 0.5);
}
.arch-arrow {
  font-size: 0.875rem;
  color: var(--accent);
  animation: bounce 2s infinite;
}

.arch-footnote {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}

/* --------------------------- 数据看板 --------------------------- */
.dash-grid {
  display: grid;
  gap: 1.5rem;
}
.dash-main {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.dash-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.metric {
  padding: 1.25rem;
  border-radius: 12px;
  background: linear-gradient(
    160deg,
    rgba(19, 36, 56, 0.75),
    rgba(8, 16, 28, 0.72)
  );
  border: 1px solid var(--line-soft);
  overflow: hidden;
  transition: border-color 0.3s;
}
.metric:hover {
  border-color: rgba(34, 211, 238, 0.4);
}
.metric-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
}
.metric-head span {
  color: var(--muted);
}
.metric-head b {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
}
.metric[data-accent="cyan"] .metric-head b,
.metric[data-accent="cyan"] .metric-value {
  color: var(--accent);
}
.metric[data-accent="green"] .metric-head b,
.metric[data-accent="green"] .metric-value {
  color: #34d399;
}
.metric[data-accent="amber"] .metric-head b,
.metric[data-accent="amber"] .metric-value {
  color: var(--warn);
}
.metric-value {
  margin-top: 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 1.875rem);
  font-weight: 700;
}
.metric-value i {
  font-style: normal;
  font-size: 0.875rem;
  margin-left: 0.25rem;
  opacity: 0.85;
}
.metric-delta {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
}
.metric-delta i {
  font-style: normal;
  color: rgba(138, 160, 184, 0.7);
}
.metric-delta.up {
  color: #34d399;
}
.metric-delta.down {
  color: #fb7185;
}

.topo {
  flex: 1;
  position: relative;
  padding: 1.5rem;
  border-radius: 12px;
  overflow: hidden;
}
.topo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.topo-head > span {
  font-size: 0.875rem;
  color: var(--muted);
}
.topo-live {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: #34d399;
}
.topo-bars {
  display: flex;
  align-items: flex-end;
  gap: 0.375rem;
  height: 112px;
}
.topo-bars span {
  flex: 1;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(to top, rgba(34, 211, 238, 0.2), rgba(34, 211, 238, 0.7));
  height: var(--h);
  animation: pulse-bar 2.4s ease-in-out infinite;
}
.topo-bars span:nth-child(2n) {
  animation-duration: 2.9s;
  animation-delay: 0.4s;
}
.topo-bars span:nth-child(3n) {
  animation-duration: 2.1s;
  animation-delay: 0.8s;
}
.topo-regions {
  margin-top: 1rem;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: rgba(138, 160, 184, 0.6);
}

.proto {
  height: 100%;
  padding: 1.5rem;
  border-radius: 12px;
}
.proto-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.proto-head span {
  font-size: 0.875rem;
  color: var(--muted);
}
.proto-head b {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--accent);
}
.proto-item {
  margin-bottom: 1rem;
}
.proto-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.375rem;
  font-size: 0.75rem;
}
.proto-row span {
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  color: var(--text);
}
.proto-row b {
  font-family: var(--font-display);
  color: var(--accent);
}
.proto-track {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  overflow: hidden;
}
.proto-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(34, 211, 238, 0.5), var(--accent));
  transition: width 1s ease-out;
}
.proto.in .proto-fill {
  width: var(--w);
}

/* --------------------------- 合作伙伴 --------------------------- */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.partner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
  padding: 1.75rem 1rem;
  border-radius: 12px;
  text-align: center;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.partner:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.28);
}
.partner b {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  transition: color 0.3s;
}
.partner:hover b {
  color: #fff;
}
.partner span {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--muted);
}

/* --------------------------- 新闻动态 --------------------------- */
.news-grid {
  display: grid;
  gap: 1.5rem;
}
.news-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 17, 32, 0.8);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.news-card:hover {
  transform: translateY(-6px);
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.28);
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.news-meta .tag {
  padding: 0.25rem 0.625rem;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 6px;
  background: rgba(34, 211, 238, 0.06);
  font-size: 0.75rem;
  color: var(--accent);
}
.news-meta time {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.news-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.5;
  color: #fff;
  transition: color 0.3s;
}
.news-card:hover h3 {
  color: var(--accent);
}
.news-card p {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-more {
  margin-top: auto;
  padding-top: 1.5rem;
  align-self: flex-start;
  background: none;
  border: none;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  opacity: 0.7;
  transition: opacity 0.3s, transform 0.3s;
}
.news-card:hover .news-more {
  opacity: 1;
  transform: translateX(4px);
}

/* --------------------------- 联系我们 --------------------------- */
.contact-grid {
  display: grid;
  gap: 2rem;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.info-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem;
  border-radius: 12px;
  transition: transform 0.3s, border-color 0.3s;
}
.info-card:hover {
  transform: translateY(-2px);
  border-color: rgba(34, 211, 238, 0.4);
}
.info-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 10px;
  background: rgba(34, 211, 238, 0.06);
  color: var(--accent);
  font-size: 1.25rem;
  transition: background 0.3s, box-shadow 0.3s;
}
.info-card:hover .info-icon {
  background: rgba(34, 211, 238, 0.15);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.28);
}
.info-label {
  font-size: 0.75rem;
  color: var(--muted);
}
.info-value {
  margin-top: 0.125rem;
  font-weight: 500;
  color: #fff;
}
.info-sub {
  font-size: 0.75rem;
  color: rgba(138, 160, 184, 0.8);
}

.form-wrap {
  padding: 1.75rem;
  border-radius: 16px;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-row {
  display: grid;
  gap: 1.25rem;
}
.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}
.contact-form label b {
  color: var(--accent);
  font-weight: 500;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  background: rgba(7, 17, 32, 0.8);
  color: #fff;
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(138, 160, 184, 0.5);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: rgba(34, 211, 238, 0.6);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.28);
}
.contact-form select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
}
.contact-form textarea {
  resize: none;
}
.form-note {
  text-align: center;
  font-size: 0.75rem;
  color: rgba(138, 160, 184, 0.7);
}

.form-success {
  min-height: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  text-align: center;
}
.success-icon {
  display: grid;
  place-items: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 1px solid rgba(52, 211, 153, 0.3);
  background: rgba(52, 211, 153, 0.1);
  color: #34d399;
  font-size: 2.25rem;
  box-shadow: 0 0 40px rgba(52, 211, 153, 0.25);
}
.form-success h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
}
.form-success p {
  max-width: 24rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

/* --------------------------- 页脚 --------------------------- */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: #03060c;
}
.footer-grid {
  padding: 4rem 1.25rem;
  display: grid;
  gap: 3rem;
}
.footer-brand > p {
  max-width: 20rem;
  margin-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--muted);
}
.socials {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.socials a {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: var(--muted);
  font-size: 0.875rem;
  transition: all 0.3s;
}
.socials a:hover {
  transform: translateY(-2px);
  border-color: rgba(34, 211, 238, 0.4);
  color: var(--accent);
}
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: #fff;
}
.footer-col ul {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.footer-col ul a {
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 0.2s;
}
.footer-col ul a:hover {
  color: var(--accent);
}
.footer-contact li {
  font-size: 0.875rem;
  color: var(--muted);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-bottom-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-block: 1.5rem;
  font-size: 0.75rem;
  color: rgba(138, 160, 184, 0.7);
}
.footer-bottom-inner p:last-child {
  font-family: var(--font-display);
  letter-spacing: 0.12em;
}

/* --------------------------- 关键帧动画 --------------------------- */
@keyframes ping {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  70%,
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.15;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

@keyframes pulse-bar {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

@keyframes fade-up {
  0% {
    opacity: 0;
    transform: translateY(28px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------- 入场动画 --------------------------- */
.fade-up {
  animation: fade-up 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* --------------------------- 滚动渐显 --------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* --------------------------- 响应式 --------------------------- */
@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .container {
    padding-inline: 2rem;
  }
  .section {
    padding: 8rem 0;
  }
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: flex;
  }
  .menu-btn {
    display: none;
  }
  .form-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .partner-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-inline: 2.5rem;
  }
  .hero-inner {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 3.5rem;
  }
  .about-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
  .biz-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .sol-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .dash-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
  .news-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
  .arch-layer {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .arch-desc {
    width: 12rem;
    flex-shrink: 0;
  }
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  }
}

@media (min-width: 1280px) {
  .biz-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}