/* =========================================================
   众盈汉科官网 · 主样式
   设计令牌见 tokens.css
   ========================================================= */

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; }

img, svg { display: block; }
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.3; }
p { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
button { padding: 0; border: 0; background: none; cursor: pointer; }

::selection { background: var(--accent-soft); color: var(--accent); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
.hero :focus-visible,
.solutions :focus-visible,
.contact :focus-visible,
.site-footer :focus-visible,
.site-header :focus-visible { outline-color: #ff8a80; }

.icon {
  width: 20px;
  height: 20px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  box-shadow: var(--shadow-pop);
  transition: top var(--motion-base) var(--ease);
}
.skip-link:focus { top: 12px; }

.container {
  width: 100%;
  max-width: calc(var(--container) + 48px);
  margin: 0 auto;
  padding: 0 24px;
}
.container-wide {
  width: 100%;
  max-width: calc(var(--container-wide) + 48px);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: background var(--motion-base) var(--ease), color var(--motion-base) var(--ease),
              border-color var(--motion-base) var(--ease), transform var(--motion-base) var(--ease),
              box-shadow var(--motion-base) var(--ease);
}
.btn .icon { width: 18px; height: 18px; }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none !important; }

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 10px 26px rgba(196, 43, 36, .22);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost-dark {
  color: var(--text-on-dark);
  border-color: rgba(233, 240, 248, .28);
  background: rgba(255, 255, 255, .04);
}
.btn-ghost-dark:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(233, 240, 248, .5);
}

.btn-ghost {
  color: var(--text);
  border-color: var(--border);
  background: #fff;
}
.btn-ghost:hover { border-color: var(--text-muted); }

.btn-lg { height: 52px; padding: 0 32px; font-size: 16px; }
.btn-sm { height: 38px; padding: 0 20px; font-size: 14px; }
.btn-block { width: 100%; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(7, 20, 38, .48);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background var(--motion-base) var(--ease), border-color var(--motion-base) var(--ease),
              box-shadow var(--motion-base) var(--ease);
}
.site-header.is-scrolled {
  background: rgba(7, 20, 38, .94);
  border-bottom-color: rgba(255, 255, 255, .08);
  box-shadow: 0 8px 30px rgba(4, 10, 20, .28);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 100%;
}

.brand { position: relative; z-index: 101; display: flex; align-items: center; gap: 10px; flex: none; color: #fff; }
.brand-mark { width: 40px; height: 40px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 17px; letter-spacing: .04em; font-weight: 700; }
.brand-text small {
  margin-top: 5px;
  font-size: 9px;
  letter-spacing: .18em;
  color: var(--text-muted-dark);
}

.nav { display: flex; align-items: center; gap: 2px; }
.nav-link {
  position: relative;
  padding: 10px 11px;
  font-size: 14px;
  color: rgba(233, 240, 248, .78);
  transition: color var(--motion-base) var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--motion-base) var(--ease);
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after,
.nav-link.is-active::after { transform: scaleX(1); }
.nav-link.is-active { color: #fff; }

.header-actions { position: relative; z-index: 101; display: flex; align-items: center; gap: 16px; flex: none; }
.header-phone {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--text-on-dark);
}
.header-phone .icon { width: 16px; height: 16px; color: #ff8a80; }
.header-phone:hover { color: #fff; }

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 10px;
  color: #fff;
}
.menu-lines {
  position: relative;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transition: background var(--motion-fast) var(--ease);
}
.menu-lines::before,
.menu-lines::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transition: transform var(--motion-base) var(--ease);
}
.menu-lines::before { top: -6px; }
.menu-lines::after { top: 6px; }
.menu-toggle[aria-expanded="true"] .menu-lines { background: transparent; }
.menu-toggle[aria-expanded="true"] .menu-lines::before { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-lines::after { transform: translateY(-6px) rotate(-45deg); }

.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 95;
  background: rgba(4, 10, 20, .62);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}
.nav-scrim[hidden] { display: none; }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 740px;
  padding: calc(var(--header-h) + 82px) 0 150px;
  overflow: hidden;
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 60% at 16% 18%, rgba(196, 43, 36, .22), transparent 62%),
    radial-gradient(56% 52% at 84% 30%, rgba(37, 99, 160, .3), transparent 66%),
    linear-gradient(180deg, #050e1c 0%, #071426 56%, #08172b 100%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(72% 72% at 50% 40%, #000 22%, transparent 82%);
  mask-image: radial-gradient(72% 72% at 50% 40%, #000 22%, transparent 82%);
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(72px);
  opacity: .5;
}
.orb-1 {
  left: -130px;
  top: -100px;
  width: 430px;
  height: 430px;
  background: rgba(196, 43, 36, .48);
  animation: float 13s ease-in-out infinite;
}
.orb-2 {
  right: -180px;
  bottom: -200px;
  width: 540px;
  height: 540px;
  background: rgba(38, 104, 170, .42);
  animation: float 17s ease-in-out infinite reverse;
}
.hero-lines {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 72%;
  opacity: .9;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1000px;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid rgba(233, 240, 248, .16);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .04);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--text-muted-dark);
  text-transform: uppercase;
}
.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ff6b62;
  box-shadow: 0 0 0 0 rgba(255, 107, 98, .6);
  animation: pulse 2.4s infinite;
}

.hero h1 {
  margin-top: 26px;
  font-size: clamp(34px, 4.5vw, 58px);
  line-height: 1.16;
  letter-spacing: -.01em;
}
.hero-em {
  background: linear-gradient(92deg, #fff 8%, #ffd2cd 52%, #ff8a80 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  max-width: 680px;
  margin: 22px auto 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-muted-dark);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 26px;
}
.hero-tags li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid rgba(233, 240, 248, .14);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .05);
  font-size: 13px;
  color: rgba(233, 240, 248, .9);
}
.hero-tags .icon { width: 16px; height: 16px; color: #ff8a80; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 34px;
}
.hero-points {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 26px;
  margin-top: 30px;
  font-size: 13px;
  color: var(--text-muted-dark);
}
.hero-points li { display: flex; align-items: center; gap: 6px; }
.hero-points .icon { width: 15px; height: 15px; color: #61c9a8; }

@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(18px, -22px, 0); }
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 107, 98, .55); }
  70% { box-shadow: 0 0 0 9px rgba(255, 107, 98, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 107, 98, 0); }
}

/* ---------- 数据条 ---------- */
.stats-wrap { position: relative; z-index: 3; margin-top: -64px; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 30px 20px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: #fff;
  box-shadow: var(--shadow-pop);
}
.stat {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 6px 12px;
}
.stat + .stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14%;
  width: 1px;
  height: 72%;
  background: var(--border);
}
.stat-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  flex: none;
  border-radius: 16px;
  background: var(--accent-soft);
  color: var(--accent);
}
.stat-icon .icon { width: 24px; height: 24px; }
.stat-text { display: flex; flex-direction: column; line-height: 1.2; }
.stat-number {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
}
.stat-text span:last-child {
  margin-top: 5px;
  font-size: 12.5px;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ---------- 通用区块 ---------- */
.section {
  position: relative;
  padding: var(--section-y) 0;
}

[tabindex="-1"]:focus { outline: none; }
.section-head {
  max-width: 780px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-head h2 {
  font-size: clamp(26px, 2.6vw, 36px);
  line-height: 1.25;
  letter-spacing: -.01em;
}
.section-sub {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}
.section-head--left { max-width: none; margin: 0 0 26px; text-align: left; }
.section-head--dark h2 { color: #fff; }
.section-head--dark .section-sub { color: var(--text-muted-dark); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--accent);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1.5px;
  background: currentColor;
  opacity: .7;
}
.eyebrow--dark { color: #ff8a80; }

/* ---------- 我的服务 ---------- */
.services { background: linear-gradient(180deg, #fff 0%, var(--surface) 100%); }
.service-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  align-items: stretch;
}
.service-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 1px 2px rgba(7, 20, 38, .03);
  transition: transform var(--motion-base) var(--ease), box-shadow var(--motion-base) var(--ease),
              border-color var(--motion-base) var(--ease);
}
.service-card:hover {
  transform: translateY(-5px);
  border-color: transparent;
  box-shadow: var(--shadow-pop);
}
.service-media {
  position: relative;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  background: var(--surface-dark);
}
.service-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .55s var(--ease);
}
.service-card:hover .service-media img { transform: scale(1.05); }
.service-body {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 20px 22px;
}
.service-no {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--accent);
  opacity: .75;
}
.service-body h3 { margin-top: 8px; font-size: 17px; }
.service-body p {
  flex: 1;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-muted);
}
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}
.service-link .icon { width: 15px; height: 15px; transition: transform var(--motion-base) var(--ease); }
.service-link:hover .icon { transform: translateX(3px); }

.service-card--featured {
  border-color: transparent;
  background: linear-gradient(180deg, #c42b24, #981d17);
  color: #fff;
}
.service-card--featured .service-body p { color: rgba(255, 255, 255, .8); }
.service-card--featured .service-no,
.service-card--featured .service-link { color: #fff; }
.service-card--featured:hover { box-shadow: 0 18px 48px rgba(196, 43, 36, .3); }

/* ---------- 技术沉淀 ---------- */
.tech { background: var(--surface); overflow: hidden; }
.tech::before {
  content: "";
  position: absolute;
  right: -180px;
  top: -160px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 160, .12), transparent 68%);
  pointer-events: none;
}
.tech-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.tech-card {
  position: relative;
  padding: 28px 24px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  transition: transform var(--motion-base) var(--ease), box-shadow var(--motion-base) var(--ease),
              border-color var(--motion-base) var(--ease);
}
.tech-card:hover {
  transform: translateY(-3px);
  border-color: #f3c9c5;
  box-shadow: var(--shadow-card);
}
.tech-no {
  position: absolute;
  top: 14px;
  right: 20px;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text);
  opacity: .05;
}
.tech-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  transition: background var(--motion-base) var(--ease), color var(--motion-base) var(--ease);
}
.tech-icon .icon { width: 22px; height: 22px; }
.tech-card:hover .tech-icon { background: var(--accent); color: #fff; }
.tech-card h3 { font-size: 16px; }
.tech-card p { margin-top: 8px; font-size: 13px; line-height: 1.75; color: var(--text-muted); }

/* ---------- 我的优势 ---------- */
.advantage { background: linear-gradient(180deg, #fff 0%, #eef3fa 100%); }
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.advantage-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px;
  border: 1px solid rgba(220, 228, 239, .9);
  border-radius: 16px;
  background: rgba(255, 255, 255, .78);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: transform var(--motion-base) var(--ease), box-shadow var(--motion-base) var(--ease),
              background var(--motion-base) var(--ease);
}
.advantage-card:hover {
  transform: translateY(-3px);
  background: #fff;
  box-shadow: var(--shadow-card);
}
.advantage-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, #fff0ee, #f9d9d5);
  color: var(--accent);
}
.advantage-icon .icon { width: 24px; height: 24px; }
.advantage-card h3 { font-size: 17px; }
.advantage-card p { font-size: 13.5px; line-height: 1.8; color: var(--text-muted); }

/* ---------- 解决方案 ---------- */
.solutions {
  padding: 110px 0;
  overflow: hidden;
  background: var(--bg-dark);
  color: var(--text-on-dark);
}
.solutions-bg {
  position: absolute;
  inset: 0;
  background: url("../img/solutions-bg.svg") center / cover no-repeat;
}
.solutions-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 20, 38, .95) 0%, rgba(7, 20, 38, .76) 55%, rgba(7, 20, 38, .52) 100%);
}
.solutions-inner { position: relative; z-index: 1; }

.industry-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
  max-width: 1020px;
  margin: 0 auto 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.industry-tab {
  margin-bottom: -1px;
  padding: 14px 20px;
  border-bottom: 2px solid transparent;
  font-size: 14px;
  white-space: nowrap;
  color: var(--text-muted-dark);
  transition: color var(--motion-base) var(--ease), border-color var(--motion-base) var(--ease);
}
.industry-tab:hover { color: #fff; }
.industry-tab.is-active {
  border-bottom-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.solution-panels { max-width: 1020px; margin: 0 auto; }
.solution-panel {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 40px 44px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 20px;
  background: rgba(255, 255, 255, .04);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  animation: fadeUp .42s var(--ease);
}
.solution-panel[hidden] { display: none; }
.solution-copy { position: relative; }
.solution-index {
  position: absolute;
  right: 0;
  top: -34px;
  font-size: 64px;
  font-weight: 700;
  line-height: 1;
  color: rgba(255, 255, 255, .06);
}
.solution-copy h3 { font-size: 24px; }
.solution-copy p {
  margin-top: 16px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-muted-dark);
}
.solution-tags { display: flex; flex-direction: column; gap: 10px; }
.solution-tags li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 12px;
  background: rgba(255, 255, 255, .05);
  font-size: 13.5px;
  color: var(--text-on-dark);
}
.solution-tags li::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(196, 43, 36, .18);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 关于我们 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 72px;
  align-items: center;
}
.about-copy > p {
  margin-top: 16px;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--text-muted);
}
.about-milestones {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 34px 0;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.about-milestones li { display: flex; flex-direction: column; gap: 8px; }
.milestone-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
}
.milestone-icon .icon { width: 18px; height: 18px; }
.about-milestones strong { font-size: 14.5px; }
.about-milestones span:last-child { font-size: 12px; line-height: 1.6; color: var(--text-muted); }

.about-media { position: relative; }
.about-media img {
  width: 100%;
  aspect-ratio: 9 / 6.8;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow-pop);
}
.about-badge {
  position: absolute;
  left: -24px;
  bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, .94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
}
.about-badge .icon { width: 26px; height: 26px; color: var(--accent); }
.about-badge div { display: flex; flex-direction: column; line-height: 1.35; }
.about-badge strong { font-size: 14px; }
.about-badge span { font-size: 12px; color: var(--text-muted); }

/* ---------- 新闻资讯 ---------- */
.news { background: linear-gradient(180deg, var(--surface) 0%, #f7f9fc 100%); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
  transition: transform var(--motion-base) var(--ease), box-shadow var(--motion-base) var(--ease);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-pop); }
.news-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.news-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .55s var(--ease);
}
.news-card:hover .news-media img { transform: scale(1.05); }
.news-tag {
  position: absolute;
  left: 14px;
  top: 14px;
  padding: 5px 10px;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
}
.news-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px;
}
.news-body h3 { font-size: 17px; line-height: 1.5; transition: color var(--motion-base) var(--ease); }
.news-card:hover .news-body h3 { color: var(--accent); }
.news-body p {
  flex: 1;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-muted);
}
.news-date {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-muted);
}
.news-date .icon { width: 14px; height: 14px; }

/* ---------- 常见问题 ---------- */
.faq { background: #fff; }
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.faq-item { border-bottom: 1px solid var(--border); }
.faq-heading { font-size: inherit; font-weight: inherit; }
.faq-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  padding: 22px 4px;
  text-align: left;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--motion-base) var(--ease);
}
.faq-trigger:hover { color: var(--accent); }
.faq-chevron {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  transition: transform var(--motion-base) var(--ease), color var(--motion-base) var(--ease);
}
.faq-item.is-open .faq-chevron { transform: rotate(180deg); color: var(--accent); }
.faq-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .32s var(--ease);
}
.faq-item.is-open .faq-panel { grid-template-rows: 1fr; }
.faq-panel-inner { overflow: hidden; }
.faq-panel-inner p {
  max-width: 80ch;
  padding: 0 4px 24px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-muted);
}

/* ---------- 获取方案 ---------- */
.contact {
  padding: 120px 0;
  overflow: hidden;
  background: var(--bg-dark);
  color: var(--text-on-dark);
}
.contact-bg {
  position: absolute;
  inset: 0;
  background: url("../img/form-bg.svg") center / cover no-repeat;
}
.contact-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(5, 13, 27, .92) 0%, rgba(5, 13, 27, .66) 58%, rgba(5, 13, 27, .48) 100%);
}
.contact-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 64px;
  align-items: start;
}
.contact-copy h2 { font-size: clamp(28px, 3vw, 40px); line-height: 1.25; }
.contact-lead {
  max-width: 470px;
  margin-top: 18px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-muted-dark);
}
.contact-points {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 28px;
}
.contact-points li { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.contact-points .icon {
  width: 18px;
  height: 18px;
  padding: 3px;
  border-radius: 50%;
  color: #61c9a8;
  background: rgba(97, 201, 168, .12);
}
.contact-direct {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}
.contact-direct a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 12px;
  background: rgba(255, 255, 255, .05);
  transition: background var(--motion-base) var(--ease), border-color var(--motion-base) var(--ease);
}
.contact-direct a:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .28);
}
.contact-direct-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(196, 43, 36, .2);
  color: #ff8a80;
}
.contact-direct-icon .icon { width: 18px; height: 18px; }
.contact-direct span:last-child { display: flex; flex-direction: column; line-height: 1.35; }
.contact-direct small { font-size: 11px; color: var(--text-muted-dark); }
.contact-direct strong { font-size: 16px; color: #fff; }

.lead-card {
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 20px;
  background: rgba(255, 255, 255, .07);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .35);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}
.field-row .field { margin-bottom: 18px; }
.field label { font-size: 13px; font-weight: 600; color: rgba(233, 240, 248, .92); }
.field .req { color: #ff8a80; }
.field input,
.field select,
.field textarea {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 10px;
  background: rgba(255, 255, 255, .96);
  color: var(--text);
  font-size: 14px;
  appearance: none;
  transition: border-color var(--motion-fast) var(--ease), box-shadow var(--motion-fast) var(--ease);
}
.field select {
  padding-right: 38px;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2355677d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}
.field textarea {
  height: auto;
  min-height: 112px;
  padding: 12px 14px;
  line-height: 1.65;
  resize: vertical;
}
.field input::placeholder,
.field textarea::placeholder { color: #64748b; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(196, 43, 36, .22);
}
.field.is-invalid input,
.field.is-invalid textarea { border-color: #e4574c; box-shadow: 0 0 0 3px rgba(228, 87, 76, .18); }
.field-error {
  display: none;
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: #ffb4ad;
}
.field.is-invalid .field-error { display: block; }
.form-privacy {
  margin: 2px 0 18px;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--text-muted-dark);
}
.form-status {
  min-height: 18px;
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: #ffb4ad;
}
.form-status.is-success { color: #61c9a8; }
.btn.is-loading { cursor: progress; }

.lead-success { padding: 28px 8px 12px; text-align: center; }
.success-icon {
  display: grid;
  place-items: center;
  width: 70px;
  height: 70px;
  margin: 0 auto 20px;
  border: 1px solid rgba(97, 201, 168, .3);
  border-radius: 50%;
  background: rgba(97, 201, 168, .16);
  color: #61c9a8;
}
.success-icon .icon { width: 34px; height: 34px; }
.lead-success h3 { font-size: 24px; color: #fff; }
.lead-success p {
  max-width: 390px;
  margin: 12px auto 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted-dark);
}
.success-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}
.lead-success .btn-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, .3);
  background: rgba(255, 255, 255, .06);
}
.lead-success .btn-ghost:hover { background: rgba(255, 255, 255, .12); }
.success-reset {
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-muted-dark);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.success-reset:hover { color: #fff; }

/* ---------- 页脚 ---------- */
.site-footer {
  padding-top: 72px;
  background: var(--footer);
  color: var(--text-on-dark);
}
.footer-main {
  display: grid;
  grid-template-columns: 1.6fr .9fr 1.2fr .9fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand p {
  max-width: 340px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--text-muted-dark);
}
.footer-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: 13.5px;
  font-weight: 600;
  color: #ff8a80;
}
.footer-cta:hover { color: #fff; }
.footer-cta .icon { width: 15px; height: 15px; }
.footer-col h3 {
  margin-bottom: 18px;
  font-size: 14px;
  letter-spacing: .04em;
  color: #fff;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col li,
.footer-col a { font-size: 13.5px; color: var(--text-muted-dark); }
.footer-col a { transition: color var(--motion-base) var(--ease); }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; align-items: flex-start; gap: 9px; line-height: 1.6; }
.footer-contact .icon { width: 15px; height: 15px; margin-top: 3px; color: #ff8a80; }
.footer-qr img {
  width: 120px;
  height: 120px;
  margin-bottom: 10px;
  padding: 8px;
  border-radius: 10px;
  background: #fff;
}
.footer-qr p { font-size: 12px; color: var(--text-muted-dark); }
.footer-bottom { padding: 20px 0; border-top: 1px solid rgba(255, 255, 255, .08); }
.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 12.5px;
  color: var(--text-muted-dark);
}
.footer-bottom a:hover { color: #fff; }

/* ---------- 悬浮客服 ---------- */
.rail {
  position: fixed;
  right: 22px;
  top: 50%;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transform: translateY(-50%);
}
.rail-btn {
  position: relative;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, .96);
  color: var(--text);
  box-shadow: 0 8px 24px rgba(7, 20, 38, .12);
  transition: background var(--motion-base) var(--ease), color var(--motion-base) var(--ease),
              border-color var(--motion-base) var(--ease), opacity var(--motion-base) var(--ease),
              visibility var(--motion-base) var(--ease), transform var(--motion-base) var(--ease);
}
.rail-btn .icon { width: 21px; height: 21px; }
.rail-btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.rail-tip {
  position: absolute;
  right: 58px;
  top: 50%;
  padding: 7px 12px;
  border-radius: 8px;
  background: var(--surface-dark);
  color: #fff;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) translateX(6px);
  transition: opacity var(--motion-base) var(--ease), transform var(--motion-base) var(--ease);
}
.rail-btn:hover .rail-tip { opacity: 1; transform: translateY(-50%) translateX(0); }
.rail-top { opacity: 0; visibility: hidden; transform: translateY(6px); }
.rail-top.is-visible { opacity: 1; visibility: visible; transform: none; }

/* ---------- 移动端底部快捷栏 ---------- */
.mobile-bar { display: none; }

/* ---------- 滚动出现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--motion-slow) var(--ease), transform var(--motion-slow) var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1200px) {
  .service-grid { grid-template-columns: repeat(3, 1fr); }
  .nav-link { padding: 10px 8px; }
  .header-phone span { display: none; }
  .about-grid { gap: 48px; }
  .contact-inner { gap: 44px; }
  .footer-main { grid-template-columns: 1.5fr 1fr 1.2fr; }
  .footer-qr { grid-column: span 3; display: flex; align-items: center; gap: 16px; }
  .footer-qr h3 { margin: 0; }
  .footer-qr img { margin: 0; }
  .footer-qr p { margin: 0; }
}

@media (max-width: 1024px) {
  :root { --section-y: 84px; }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 99;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    padding: 100px 28px 40px;
    overflow-y: auto;
    background: #071426;
    transform: translateX(100%);
    transition: transform .3s var(--ease);
  }
  .nav.is-open { transform: none; }
  .nav-link {
    padding: 15px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, .07);
    font-size: 16px;
    color: var(--text-on-dark);
  }
  .nav-link::after { display: none; }
  .nav-link.is-active { color: #ff8a80; }

  .menu-toggle { display: flex; }
  .header-cta { display: none; }

  .hero { min-height: 680px; padding-bottom: 130px; }
  .stats-wrap { margin-top: -48px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px 12px; }
  .stat { justify-content: flex-start; padding: 10px 18px; }
  .stat + .stat::before { display: none; }

  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }

  .solution-panel { grid-template-columns: 1fr; gap: 28px; padding: 32px; }
  .solution-tags { flex-direction: row; flex-wrap: wrap; }
  .solution-tags li { flex: 1 1 160px; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-media { max-width: 640px; }
  .about-badge { left: 20px; }

  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
  .contact-lead { max-width: none; }
  .lead-card { max-width: 680px; }

  .footer-main { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-qr { grid-column: auto; flex-direction: column; align-items: flex-start; }
  .footer-qr h3 { margin-bottom: 0; }
  .footer-qr img { margin-bottom: 0; }
}

@media (max-width: 768px) {
  :root { --header-h: 66px; --section-y: 72px; }

  .container, .container-wide { padding: 0 20px; }

  .hero { min-height: 0; padding: calc(var(--header-h) + 64px) 0 100px; }
  .hero h1 { margin-top: 20px; font-size: clamp(30px, 8vw, 42px); }
  .hero-sub { margin-top: 18px; font-size: 14.5px; }
  .hero-tags { gap: 8px; margin-top: 22px; }
  .hero-tags li { padding: 8px 13px; font-size: 12.5px; }
  .hero-actions { margin-top: 28px; }
  .hero-actions .btn { width: 100%; max-width: 320px; }
  .hero-points { gap: 8px 18px; font-size: 12px; }

  .stats-wrap { margin-top: -36px; }
  .stats-grid { padding: 18px 10px; border-radius: 16px; }
  .stat { gap: 12px; padding: 10px 8px; }
  .stat-icon { width: 42px; height: 42px; border-radius: 12px; }
  .stat-icon .icon { width: 20px; height: 20px; }
  .stat-number { font-size: 24px; }
  .stat-text span:last-child { font-size: 11.5px; white-space: normal; }

  .section-head { margin-bottom: 36px; }
  .section-sub { font-size: 13.5px; }

  .service-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .service-media { aspect-ratio: 16 / 10; }
  .service-body { padding: 16px; }
  .service-body h3 { font-size: 15.5px; }
  .service-body p { font-size: 12.5px; }
  .service-link { font-size: 12.5px; }

  .tech-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .tech-card { padding: 22px 18px; }
  .tech-card p { font-size: 12.5px; }

  .advantage-card { padding: 22px; }
  .news-grid { grid-template-columns: 1fr; gap: 18px; }

  .solutions { padding: 76px 0; }
  .industry-tabs {
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    margin-bottom: 28px;
    padding-bottom: 2px;
    scrollbar-width: none;
  }
  .industry-tabs::-webkit-scrollbar { display: none; }
  .industry-tab { padding: 12px 16px; font-size: 13px; }
  .solution-panel { padding: 26px 22px; }
  .solution-copy h3 { font-size: 20px; }
  .solution-copy p { font-size: 13.5px; }
  .solution-index { font-size: 48px; top: -24px; }

  .about-milestones { grid-template-columns: 1fr; gap: 16px; }
  .about-milestones li { flex-direction: row; align-items: center; flex-wrap: wrap; gap: 8px 12px; }
  .about-milestones li span:last-child { flex-basis: 100%; padding-left: 50px; }
  .about-badge { left: 12px; bottom: 16px; padding: 12px 14px; }

  .contact { padding: 84px 0; }
  .lead-card { padding: 24px 20px; }
  .contact-direct { gap: 10px; }
  .contact-direct a { flex: 1 1 100%; }
  .success-actions .btn { flex: 1 1 100%; }

  .footer-main { grid-template-columns: 1fr; gap: 34px; padding-bottom: 40px; }
  .footer-qr { flex-direction: row; flex-wrap: wrap; }
  .footer-qr h3 { flex-basis: 100%; }
  .footer-bottom-inner { flex-direction: column; align-items: flex-start; gap: 8px; }

  .rail { display: none; }

  .mobile-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 88;
    display: grid;
    grid-template-columns: 1fr 1fr 1.15fr;
    height: calc(56px + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    border-top: 1px solid rgba(255, 255, 255, .1);
    background: rgba(7, 20, 38, .97);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    transform: translateY(110%);
    transition: transform .3s var(--ease);
  }
  .mobile-bar.is-visible { transform: none; }
  .mobile-bar a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 11px;
    color: var(--text-on-dark);
  }
  .mobile-bar .icon { width: 19px; height: 19px; color: #ff8a80; }
  .mobile-bar .mobile-bar-primary {
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
  }
  .mobile-bar .mobile-bar-primary .icon { color: #fff; }
  .site-footer { padding-bottom: calc(64px + env(safe-area-inset-bottom)); }
}

@media (max-width: 560px) {
  .service-grid { grid-template-columns: 1fr; }
  .service-media { aspect-ratio: 16 / 9; }
  .tech-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .hero-eyebrow { font-size: 10px; letter-spacing: .1em; padding: 7px 12px; }
  .brand-text small { display: none; }
  .header-actions { gap: 8px; }
  .stat-text span:last-child { font-size: 11px; }
}

@media (max-width: 380px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat { padding: 10px 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .orb { animation: none; }
}