/* ============================================================
   新农云服 · 下载发布站
   政企科技风 · 白底 + 腾讯蓝 · 参考腾讯电脑管家
============================================================ */

:root {
  /* —— 蓝色主题 —— */
  --blue-50:  #F0F7FF;
  --blue-100: #E0EFFF;
  --blue-200: #CCE7FF;
  --blue-300: #99CFFF;
  --blue-400: #4DA8FF;
  --blue-500: #0084FF;
  --blue-600: #006FE6;
  --blue-700: #0057B5;
  --blue-800: #003F82;
  --blue-bg:  #F5F9FE;
  --blue-bg2: #EAF2FD;

  /* —— 背景 —— */
  --bg:        #FFFFFF;
  --bg-soft:   #F8FAFD;
  --bg-blue:   #F5F9FE;
  --bg-blue2:  #EBF4FE;

  /* —— 文字 —— */
  --t-1: #16223A;
  --t-2: #3B4A66;
  --t-3: #6B7588;
  --t-4: #97A0B3;
  --t-5: #C5CBD8;

  /* —— 边线 —— */
  --line-1: #EBF0F7;
  --line-2: #DCE5F0;
  --line-3: #BCCEE3;
  --line-blue: #B8DBFF;

  /* —— Footer 暗色 —— */
  --dk:    #0F172A;
  --dk-2:  #1A2433;
  --dk-3:  #243046;
  --dk-t1: rgba(255, 255, 255, 0.92);
  --dk-t2: rgba(255, 255, 255, 0.66);
  --dk-t3: rgba(255, 255, 255, 0.42);
  --dk-line: rgba(255, 255, 255, 0.10);

  /* —— 字体 —— */
  --f-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", -apple-system, "Segoe UI", system-ui, sans-serif;
  --f-mono: "SF Mono", "JetBrains Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;

  /* —— 圆角 —— */
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;

  /* —— 阴影 —— */
  --sh-1: 0 1px 2px rgba(22, 34, 58, 0.04);
  --sh-2: 0 4px 14px rgba(22, 34, 58, 0.06), 0 1px 3px rgba(22, 34, 58, 0.04);
  --sh-3: 0 12px 28px rgba(22, 34, 58, 0.08), 0 4px 10px rgba(22, 34, 58, 0.05);
  --sh-blue: 0 12px 32px rgba(0, 132, 255, 0.18), 0 4px 12px rgba(0, 132, 255, 0.12);

  /* —— 尺寸 —— */
  --nav-h: 68px;
  --top-accent-h: 3px;
}

/* ============== Reset ============== */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + var(--top-accent-h) + 16px);
}
body {
  margin: 0;
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--t-1);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern", "calt", "tnum" 0;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: 0; background: transparent; cursor: pointer; color: inherit; }
ul { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; }

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ============== Top Accent Bar ============== */
.top-accent {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--top-accent-h);
  background: linear-gradient(90deg, var(--blue-700), var(--blue-500), var(--blue-400), var(--blue-500), var(--blue-700));
  z-index: 101;
}

/* ============== Nav ============== */
.nav {
  position: fixed;
  top: var(--top-accent-h);
  left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s;
}
.nav.is-scrolled {
  border-color: var(--line-2);
  box-shadow: var(--sh-1);
}
.nav__inner {
  max-width: 1280px;
  height: 100%;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--t-1);
}
.logo__mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 132, 255, 0.25);
}
.logo__word {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--t-1);
}
.nav__menu {
  display: flex;
  gap: 32px;
  font-size: 14.5px;
}
.nav__menu a {
  position: relative;
  padding: 8px 0;
  color: var(--t-2);
  font-weight: 500;
  transition: color .2s;
}
.nav__menu a:hover { color: var(--blue-500); }
.nav__menu a::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 2px;
  background: var(--blue-500);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .25s;
}
.nav__menu a:hover::after { transform: scaleX(1); }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--blue-500);
  color: #fff;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(0, 132, 255, 0.30);
  transition: all .2s;
}
.nav__cta:hover {
  background: var(--blue-600);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 132, 255, 0.40);
}

/* ============== Buttons ============== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all .25s ease;
  text-decoration: none;
}
.btn--pri {
  background: var(--blue-500);
  color: #fff;
  border-color: var(--blue-500);
  box-shadow: 0 6px 18px rgba(0, 132, 255, 0.25);
}
.btn--pri:hover {
  background: var(--blue-600);
  border-color: var(--blue-600);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 132, 255, 0.38);
}
.btn--line {
  background: transparent;
  color: var(--blue-500);
  border-color: var(--blue-300);
}
.btn--line:hover {
  background: var(--blue-50);
  border-color: var(--blue-500);
  transform: translateY(-2px);
}
.btn--block { width: 100%; padding: 14px 24px; }
.btn[aria-disabled="true"], .btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
}
.btn__hint {
  margin-left: 6px;
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  opacity: 0.75;
}

/* ============== Hero ============== */
.hero {
  position: relative;
  min-height: calc(100vh - var(--top-accent-h));
  padding: calc(var(--nav-h) + var(--top-accent-h) + 40px) 0 80px;
  overflow: hidden;
  isolation: isolate;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.55;
}
.hero__glow--1 {
  width: 600px;
  height: 600px;
  top: -180px;
  left: -120px;
  background: radial-gradient(circle, rgba(0, 132, 255, 0.30), transparent 65%);
}
.hero__glow--2 {
  width: 500px;
  height: 500px;
  top: 20%;
  right: -100px;
  background: radial-gradient(circle, rgba(77, 168, 255, 0.28), transparent 65%);
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(0, 132, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 132, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 30%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 30%, transparent 75%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero__copy { max-width: 580px; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 24px;
  padding: 7px 14px 7px 12px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--blue-700);
  background: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-radius: 999px;
}
.kicker__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(0, 132, 255, 0.18);
}

.hero__title {
  margin: 0 0 20px;
  font-size: clamp(54px, 8vw, 96px);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.05;
  color: var(--t-1);
}
.hero__title-hl {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__subtitle {
  margin: 0 0 24px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 500;
  color: var(--t-2);
  letter-spacing: 0.04em;
}

.hero__lede {
  margin: 0 0 40px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--t-3);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 56px;
}

.hero__pills {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
}
.hero__pills li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--t-2);
}
.hero__pill-icon {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 8px;
  background: var(--blue-50);
  color: var(--blue-500);
}

/* —— Hero 设备插画 —— */
.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero__visual-glow {
  position: absolute;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(0, 132, 255, 0.12), transparent 60%);
  filter: blur(40px);
  z-index: -1;
}
.hero__devices {
  width: 100%;
  max-width: 620px;
  height: auto;
  filter: drop-shadow(0 24px 48px rgba(0, 132, 255, 0.18));
  animation: floatUpDown 5s ease-in-out infinite;
}
@keyframes floatUpDown {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

/* ============== Section common ============== */
.sec {
  position: relative;
  padding: clamp(80px, 12vh, 128px) 0;
}
.sec--products {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-blue) 100%);
}
.sec--prod {
  background: var(--bg);
}
.sec--prod-alt {
  background: var(--bg-blue);
}
.sec--features {
  background: linear-gradient(180deg, var(--bg-blue) 0%, var(--bg) 100%);
}
.sec--about {
  background: var(--bg);
}

.head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto clamp(56px, 9vh, 88px);
}
.head__eyebrow {
  display: inline-block;
  margin: 0 0 16px;
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--blue-500);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: 999px;
  text-transform: uppercase;
}
.head__eyebrow--blue {
  font-family: var(--f-mono);
  letter-spacing: 0.22em;
}
.head__title {
  margin: 0 0 14px;
  font-size: clamp(32px, 4.6vw, 48px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--t-1);
}
.head__lede {
  margin: 0;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.75;
  color: var(--t-3);
}

/* ============== 三个产品卡片 ============== */
.pcards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pcard {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 36px 32px 32px;
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  color: var(--t-1);
  transition: all .3s ease;
  overflow: hidden;
  isolation: isolate;
}
.pcard::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-500), var(--blue-700));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.pcard:hover {
  border-color: var(--blue-300);
  transform: translateY(-4px);
  box-shadow: var(--sh-blue);
}
.pcard:hover::before { transform: scaleX(1); }

.pcard--featured {
  border-color: var(--blue-400);
  background: linear-gradient(180deg, #fff 0%, var(--blue-50) 100%);
  box-shadow: var(--sh-2);
}
.pcard--featured::before { transform: scaleX(1); }
.pcard__badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(0, 132, 255, 0.30);
}

.pcard__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.pcard__icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
  color: var(--blue-500);
  border: 1px solid var(--blue-100);
}
.pcard__icon svg { width: 30px; height: 30px; }
.pcard__no {
  font-family: var(--f-mono);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--blue-100);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.pcard__name {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 700;
  color: var(--t-1);
}
.pcard__sub {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--blue-500);
  letter-spacing: 0.04em;
}
.pcard__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--t-3);
  flex: 1;
}
.pcard__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 20px 0;
}
.pcard__chips li {
  display: inline-flex;
  align-items: center;
  padding: 4px 11px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--t-2);
  background: var(--bg-blue);
  border: 1px solid var(--line-2);
  border-radius: 999px;
}
.pcard__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #fff;
  background: var(--blue-500);
  border-radius: 8px;
  transition: all .25s;
  box-shadow: 0 4px 12px rgba(0, 132, 255, 0.22);
  margin-top: 4px;
}
.pcard__cta svg { transition: transform .2s; }
.pcard:hover .pcard__cta {
  background: var(--blue-600);
  box-shadow: 0 8px 20px rgba(0, 132, 255, 0.38);
}
.pcard:hover .pcard__cta svg { transform: translateX(3px); }

/* ============== 产品详情段 ============== */
.prod__inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
  align-items: start;
}
.sec--prod-alt .prod__inner { direction: rtl; }
.sec--prod-alt .prod__inner > * { direction: ltr; }

.prod__meta { padding-top: 8px; }
.prod__name {
  margin: 16px 0 16px;
  font-size: clamp(34px, 4.6vw, 56px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.1;
  color: var(--t-1);
}
.prod__role {
  margin: 0 0 32px;
}
.prod__role em {
  display: inline-block;
  padding: 6px 14px;
  font-style: normal;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--blue-700);
  background: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-radius: 999px;
}
.prod__lede {
  margin: 0 0 40px;
  max-width: 56ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--t-2);
}
.prod__lede strong {
  color: var(--blue-700);
  font-weight: 600;
}
.prod__feats {
  display: grid;
  gap: 24px;
}
.prod__feats li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  align-items: start;
}
.prod__feat-num {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  font-family: var(--f-mono);
  font-size: 14px;
  font-weight: 700;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff;
  font-feature-settings: "tnum";
  box-shadow: 0 4px 12px rgba(0, 132, 255, 0.24);
}
.prod__feats h4 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--t-1);
}
.prod__feats p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--t-3);
}

/* —— 下载卡(右栏) —— */
.prod__downloads {
  display: grid;
  gap: 16px;
  align-content: start;
}
.dtile {
  position: relative;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  box-shadow: var(--sh-2);
  transition: all .25s;
}
.dtile:hover {
  border-color: var(--blue-300);
  box-shadow: var(--sh-blue);
  transform: translateY(-2px);
}
.dtile__platform {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--t-1);
}
.dtile__plat-icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--blue-50);
  color: var(--blue-500);
  flex-shrink: 0;
}
.dtile__version {
  display: inline-block;
  margin: 0 0 20px;
  padding: 4px 11px;
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--blue-700);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: 999px;
  font-feature-settings: "tnum";
}
.dl__ver--loading { color: var(--t-4); background: var(--bg-soft); border-color: var(--line-1); }
.dl__ver--mandatory {
  color: #B91C1C;
  background: #FEE2E2;
  border-color: #FCA5A5;
}
.dtile__hint {
  margin: 14px 0 0;
  font-size: 12.5px;
  color: var(--t-4);
  line-height: 1.6;
}

.release-notes {
  padding: 18px 22px;
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-left: 3px solid var(--blue-500);
  border-radius: var(--r-sm);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--t-2);
}
.release-notes h4 {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue-700);
  font-weight: 600;
}
.release-notes h4:not(:first-child) { margin-top: 14px; }
.release-notes ul { margin: 0; padding-left: 18px; }
.release-notes li { margin-bottom: 3px; }

/* ============== 平台能力 ============== */
.fgrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.fcell {
  position: relative;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  transition: all .3s ease;
  isolation: isolate;
}
.fcell::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-500), var(--blue-700));
  border-top-left-radius: var(--r-md);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.fcell:hover {
  border-color: var(--blue-300);
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
}
.fcell:hover::before { transform: scaleX(1); }

.fcell__icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 20px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
  color: var(--blue-500);
  border: 1px solid var(--blue-100);
}
.fcell__icon svg { width: 26px; height: 26px; }
.fcell h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--t-1);
}
.fcell p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--t-3);
}

/* ============== 关于 ============== */
.about-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.about-col {
  padding: 32px 28px;
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  transition: all .25s;
}
.about-col:hover {
  border-color: var(--blue-300);
  box-shadow: var(--sh-2);
}
.about-col__label {
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-1);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue-500);
  position: relative;
}
.about-col__label::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--blue-500);
}
.about-col p:not(.about-col__label):not(.about-col__org):not(.about-col__contact-item) {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--t-2);
}
.about-col__org {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--t-1);
  line-height: 1.5;
}
.about-col__contact-item {
  display: flex !important;
  align-items: center;
  gap: 12px;
  margin: 0 0 10px !important;
  font-size: 14px !important;
}
.about-col__contact-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 3px 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--blue-500);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: 999px;
  flex-shrink: 0;
}
.about-col__contact-item a {
  color: var(--t-1);
  font-family: var(--f-mono);
  font-weight: 500;
  font-feature-settings: "tnum";
  transition: color .2s;
}
.about-col__contact-item a:hover { color: var(--blue-500); }

/* ============== Footer ============== */
.footer {
  padding: 64px 0 28px;
  background: var(--dk);
  color: var(--dk-t2);
}
.footer__top {
  display: grid;
  grid-template-columns: 1.2fr 2.4fr;
  gap: 56px;
  align-items: start;
  padding-bottom: 48px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--dk-line);
}
.footer__brand { display: flex; flex-direction: column; gap: 14px; }
.logo--on-dark .logo__mark {
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  box-shadow: none;
}
.logo--on-dark .logo__word { color: #fff; }
.footer__tag {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dk-t3);
}
.footer__cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.footer__cols > div { display: flex; flex-direction: column; gap: 10px; }
.footer__label {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--dk-t1);
}
.footer__cols a,
.footer__cols span {
  font-size: 13.5px;
  color: var(--dk-t2);
  transition: color .2s;
}
.footer__cols a:hover { color: var(--blue-400); }
.footer__company {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--dk-t1);
  font-weight: 500;
}
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  font-size: 12.5px;
  color: var(--dk-t3);
}
.footer__bottom p { margin: 0; }
.footer__bottom a { color: var(--dk-t3); transition: color .2s; }
.footer__bottom a:hover { color: var(--blue-400); }
.footer__beian {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}
.footer__beian-sep { margin: 0 6px; color: rgba(255, 255, 255, 0.2); }
.footer__beian-police {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer__beian-police:hover .footer__beian-icon { color: var(--blue-400); }
.footer__beian-icon {
  color: var(--dk-t3);
  transition: color .2s;
  vertical-align: middle;
}

/* ============== Modal ============== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
}
.modal[hidden] { display: none; }
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fadeIn .25s;
}
.modal__panel {
  position: relative;
  width: 100%;
  max-width: 400px;
  padding: 40px 36px 32px;
  background: #fff;
  border-radius: var(--r-lg);
  text-align: center;
  box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.4);
  animation: popIn .3s cubic-bezier(0.2, 0.7, 0.2, 1.1);
}
.modal__panel::before {
  content: "";
  position: absolute;
  top: 0; left: 20%; right: 20%;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-500), var(--blue-700));
  border-radius: 0 0 var(--r-xs) var(--r-xs);
}
.modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: var(--t-3);
  border-radius: 999px;
  transition: all .15s;
}
.modal__close:hover { background: var(--bg-blue); color: var(--blue-500); }
.modal__tag {
  margin: 0 0 8px;
  display: inline-block;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue-700);
  background: var(--blue-50);
  border-radius: 999px;
}
.modal__panel h3 {
  margin: 0 0 24px;
  font-size: 22px;
  font-weight: 600;
  color: var(--t-1);
}
.modal__qr-wrap {
  display: inline-block;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
}
.modal__qr {
  width: 220px;
  height: 220px;
}
.modal__hint {
  margin: 18px 0 0;
  font-size: 12.5px;
  color: var(--t-3);
  line-height: 1.6;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes popIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* ============== 微信 / QQ 内置浏览器引导遮罩 ============== */
.wxtip {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 24px;
  overflow-y: auto;
  animation: fadeIn .25s ease;
}
.wxtip[hidden] { display: none; }

.wxtip__arrow {
  align-self: flex-end;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  margin-top: 6px;
  margin-right: 8px;
  max-width: 240px;
}
.wxtip__arrow svg {
  width: 100px;
  height: 120px;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4));
  animation: wxArrowBounce 1.8s ease-in-out infinite;
}
.wxtip__arrow-text {
  margin: 6px 4px 0 0;
  text-align: right;
  font-size: 16px;
  line-height: 1.6;
  color: #fff;
  letter-spacing: 0.02em;
}
.wxtip__arrow-text strong {
  display: inline-block;
  margin-top: 4px;
  font-weight: 600;
  color: #4DA8FF;
  font-size: 17px;
}

@keyframes wxArrowBounce {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(6px, -6px); }
}

.wxtip__panel {
  width: 100%;
  max-width: 380px;
  margin: auto;
  padding: 36px 28px 28px;
  background: #fff;
  border-radius: 18px;
  text-align: center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  animation: popIn .35s cubic-bezier(0.2, 0.7, 0.2, 1.1);
}

.wxtip__icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
  color: var(--blue-500);
  border: 1px solid var(--blue-100);
}
.wxtip__icon svg { width: 36px; height: 36px; }

.wxtip__title {
  margin: 0 0 14px;
  font-size: 22px;
  font-weight: 700;
  color: var(--t-1);
  letter-spacing: 0.02em;
}
.wxtip__desc {
  margin: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--t-2);
}
.wxtip__desc strong {
  color: var(--blue-700);
  font-weight: 600;
}
.wxtip__url {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  padding: 6px 6px 6px 14px;
  background: var(--bg-blue);
  border: 1px solid var(--line-2);
  border-radius: 999px;
}
.wxtip__url-text {
  flex: 1;
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--t-2);
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-feature-settings: "tnum";
}
.wxtip__copy {
  flex-shrink: 0;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--blue-500);
  border-radius: 999px;
  transition: background-color .2s, transform .15s;
}
.wxtip__copy:hover { background: var(--blue-600); }
.wxtip__copy:active { transform: scale(0.96); }
.wxtip__copy.is-copied {
  background: #10B981;
}
.wxtip__hint {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--t-4);
  letter-spacing: 0.02em;
}

@media (max-width: 480px) {
  .wxtip { padding: 16px; }
  .wxtip__arrow { max-width: 200px; }
  .wxtip__arrow svg { width: 80px; height: 100px; }
  .wxtip__arrow-text { font-size: 14.5px; }
  .wxtip__arrow-text strong { font-size: 15.5px; }
  .wxtip__panel { padding: 30px 22px 24px; }
  .wxtip__title { font-size: 19px; }
  .wxtip__desc { font-size: 13.5px; }
}

/* 被遮罩占满时锁滚动 */
body.wxtip-open { overflow: hidden; }

/* ============== Responsive ============== */
@media (max-width: 1100px) {
  .hero__inner { grid-template-columns: 1fr; gap: 56px; }
  .hero__copy { max-width: 100%; }
  .hero__visual { max-width: 520px; margin: 0 auto; }
  .pcards { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; gap: 20px; }
  .prod__inner { grid-template-columns: 1fr; gap: 48px; }
  .sec--prod-alt .prod__inner { direction: ltr; }
  .fgrid { grid-template-columns: repeat(2, 1fr); }
  .about-cols { grid-template-columns: 1fr; max-width: 600px; margin: 0 auto; gap: 20px; }
}

@media (max-width: 768px) {
  .container { padding: 0 22px; }
  .nav__menu { display: none; }
  .nav__inner { padding: 0 22px; gap: 16px; }
  .nav__cta { padding: 8px 18px; font-size: 13px; }
  .hero { padding: calc(var(--nav-h) + var(--top-accent-h) + 24px) 0 64px; }
  .hero__title { font-size: clamp(44px, 12vw, 64px); }
  .hero__pills { grid-template-columns: 1fr; gap: 10px; }
  .sec { padding: 64px 0; }
  .head { margin-bottom: 48px; }
  .fgrid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; gap: 36px; }
  .footer__cols { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .prod__feats li { grid-template-columns: 40px 1fr; gap: 14px; }
  .prod__feat-num { width: 36px; height: 36px; font-size: 13px; }
}

@media (max-width: 480px) {
  .logo__word { font-size: 18px; }
  .hero__cta { width: 100%; }
  .hero__cta .btn { flex: 1 1 0; min-width: 0; padding: 14px 16px; font-size: 14px; }
  .pcard { padding: 28px 24px; }
  .pcard__icon { width: 48px; height: 48px; }
  .pcard__icon svg { width: 26px; height: 26px; }
  .pcard__no { font-size: 28px; }
  .footer__cols { grid-template-columns: 1fr; gap: 22px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 10px; }
  .modal__panel { padding: 32px 24px 24px; }
  .modal__qr { width: 200px; height: 200px; }
}

/* ============== Reduced motion ============== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}