/* ==========================================================================
   皓辰软件官网 样式表
   主色：深蓝（对齐建联查 #1a73e8）  |  风格：企业级专业  |  适配：桌面 / 平板 / 手机
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 深蓝主色 —— 对齐建联查视觉体系 */
  --brand-900: #071427;
  --brand-800: #0d2140;
  --brand-700: #123a70;
  --brand-600: #1557b0;
  --brand-500: #1a73e8;
  --brand-400: #4a94f0;
  --brand-300: #9cc4f7;
  --brand-100: #e7f0fd;
  --brand-50:  #f3f8fe;

  --ink-900: #0a1526;
  --ink-700: #22334a;
  --ink-500: #556680;
  --ink-400: #7b8aa0;
  --ink-200: #d6dfeb;
  --ink-100: #eef3f9;

  --white: #ffffff;
  --paper: #f5f8fc;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 2px 8px rgba(10, 21, 38, .05);
  --shadow: 0 8px 28px rgba(10, 21, 38, .08);
  --shadow-lg: 0 20px 56px rgba(10, 21, 38, .13);

  --maxw: 1180px;
  --nav-h: 68px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 2. 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--ink-700);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 3. 顶部导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.nav.is-scrolled { border-bottom-color: var(--ink-200); box-shadow: var(--shadow-sm); }

.nav__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand__mark {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: linear-gradient(140deg, var(--brand-400), var(--brand-700));
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 17px;
  box-shadow: 0 4px 12px rgba(26, 115, 232, .30);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__cn { font-size: 18px; font-weight: 700; color: var(--ink-900); letter-spacing: .04em; }
.brand__en { font-size: 9.5px; color: var(--ink-400); letter-spacing: .18em; text-transform: uppercase; }

.nav__menu { display: flex; align-items: center; gap: 4px; }
.nav__menu a {
  padding: 8px 14px; border-radius: 999px;
  font-size: 14.5px; color: var(--ink-500); font-weight: 500;
  transition: color .2s ease, background .2s ease;
}
.nav__menu a:hover { color: var(--brand-600); background: var(--brand-50); }
.nav__menu a.is-active { color: var(--brand-700); background: var(--brand-100); font-weight: 600; }

.nav__cta {
  margin-left: 10px; padding: 9px 20px !important;
  background: var(--brand-600); color: #fff !important;
  border-radius: 999px; font-weight: 600;
  box-shadow: 0 4px 14px rgba(21, 87, 176, .28);
}
.nav__cta:hover { background: var(--brand-700) !important; }

.nav__burger {
  display: none; width: 40px; height: 40px; border: 0; background: none;
  cursor: pointer; position: relative;
}
.nav__burger span {
  position: absolute; left: 9px; width: 22px; height: 2px;
  background: var(--ink-700); border-radius: 2px; transition: .28s ease;
}
.nav__burger span:nth-child(1) { top: 13px; }
.nav__burger span:nth-child(2) { top: 19px; }
.nav__burger span:nth-child(3) { top: 25px; }
.nav__burger.is-open span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { top: 19px; transform: rotate(-45deg); }

/* ---------- 4. 通用区块 ---------- */
.section { padding: 96px 0; }
.section--paper { background: var(--paper); }
.section--tight { padding: 72px 0; }

.sec-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.sec-head--left { margin-left: 0; text-align: left; }

.eyebrow {
  display: inline-block; padding: 5px 14px; border-radius: 999px;
  background: var(--brand-100); color: var(--brand-700);
  font-size: 12.5px; font-weight: 700; letter-spacing: .1em;
  margin-bottom: 16px;
}
.sec-title {
  font-size: clamp(26px, 3.4vw, 38px); line-height: 1.3;
  color: var(--ink-900); font-weight: 700; letter-spacing: -.01em;
}
.sec-sub { margin-top: 16px; color: var(--ink-500); font-size: 16.5px; line-height: 1.85; }

/* ---------- 5. Hero ---------- */
.hero {
  position: relative; padding: calc(var(--nav-h) + 86px) 0 100px;
  background: linear-gradient(160deg, var(--brand-900) 0%, var(--brand-800) 46%, #0d2140 100%);
  color: #fff; overflow: hidden;
}
.hero::before {
  content: ""; 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: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 70% 20%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 70% 20%, #000 20%, transparent 78%);
}
.hero::after {
  content: ""; position: absolute; width: 620px; height: 620px;
  right: -180px; top: -220px; border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 148, 240, .30), transparent 66%);
  filter: blur(20px);
}
.hero__inner { position: relative; z-index: 2; max-width: 860px; }

.hero__badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 16px; border-radius: 999px; margin-bottom: 28px;
  background: rgba(255,255,255,.10); border: 1px solid rgba(255,255,255,.20);
  font-size: 13.5px; color: var(--brand-300); font-weight: 600;
  backdrop-filter: blur(6px);
}
.hero__badge i {
  width: 7px; height: 7px; border-radius: 50%; background: var(--brand-400);
  box-shadow: 0 0 0 4px rgba(74,148,240,.22);
}

.hero h1 {
  font-size: clamp(32px, 5.2vw, 56px); line-height: 1.22;
  font-weight: 800; letter-spacing: -.02em; margin-bottom: 24px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--brand-300), #bcd9fb);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lead {
  font-size: clamp(16px, 1.6vw, 18.5px); line-height: 1.9;
  color: rgba(255,255,255,.80); max-width: 660px; margin-bottom: 38px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 30px; border-radius: 999px;
  font-size: 15.5px; font-weight: 600; cursor: pointer; border: 1px solid transparent;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn--primary {
  background: var(--brand-500); color: #fff;
  box-shadow: 0 10px 26px rgba(26, 115, 232, .34);
}
.btn--primary:hover { background: var(--brand-400); transform: translateY(-2px); }
.btn--ghost {
  background: rgba(255,255,255,.08); color: #fff;
  border-color: rgba(255,255,255,.28);
}
.btn--ghost:hover { background: rgba(255,255,255,.16); transform: translateY(-2px); }
.btn--line {
  background: transparent; color: var(--brand-700);
  border-color: var(--brand-300);
}
.btn--line:hover { background: var(--brand-50); border-color: var(--brand-500); }

/* ---------- 6. 数据条 ---------- */
.stats {
  position: relative; z-index: 3; margin-top: -58px;
}
.stats__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--ink-200); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-lg);
}
.stat {
  background: var(--white); padding: 30px 26px; text-align: center;
}
.stat__num {
  font-size: clamp(26px, 3vw, 36px); font-weight: 800; letter-spacing: -.02em;
  color: var(--brand-600); line-height: 1.1;
}
.stat__num small { font-size: .5em; font-weight: 700; margin-left: 2px; }
.stat__label { margin-top: 8px; font-size: 14px; color: var(--ink-500); }

/* ---------- 7. 产品矩阵 ---------- */
.prod-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.prod {
  position: relative; display: block; overflow: hidden;
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius-lg); padding: 34px 32px 30px;
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.prod::after {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
  background: linear-gradient(90deg, var(--brand-400), var(--brand-600));
  transform: scaleX(0); transform-origin: left; transition: transform .32s ease;
}
.prod:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--brand-300); }
.prod:hover::after { transform: scaleX(1); }

.prod__top { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.prod__icon {
  width: 52px; height: 52px; border-radius: 15px; flex: none;
  display: grid; place-items: center; font-size: 24px;
  background: var(--brand-50); border: 1px solid var(--brand-100);
}
.prod__name { font-size: 21px; font-weight: 700; color: var(--ink-900); }
.prod__en { font-size: 11.5px; color: var(--ink-400); letter-spacing: .12em; text-transform: uppercase; margin-top: 2px; }

.prod__desc { color: var(--ink-500); font-size: 15.5px; line-height: 1.85; margin-bottom: 20px; }
.prod__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 5px 12px; border-radius: 7px;
  background: var(--brand-50); color: var(--brand-700);
  font-size: 12.5px; font-weight: 600;
}
.prod__more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 22px; color: var(--brand-600); font-weight: 600; font-size: 14.5px;
}
.prod:hover .prod__more { gap: 10px; }
.prod__more span { transition: gap .2s ease; }

/* ---------- 8. 能力网格 ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cap {
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius); padding: 30px 26px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.cap:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cap__icon {
  width: 46px; height: 46px; border-radius: 13px; margin-bottom: 18px;
  display: grid; place-items: center; font-size: 21px;
  background: linear-gradient(140deg, var(--brand-100), var(--brand-50));
}
.cap__title { font-size: 17.5px; font-weight: 700; color: var(--ink-900); margin-bottom: 10px; }
.cap__desc { font-size: 14.8px; color: var(--ink-500); line-height: 1.8; }

/* ---------- 9. 解决方案 ---------- */
.sol-list { display: grid; gap: 18px; }
.sol {
  display: grid; grid-template-columns: 76px 1fr auto; align-items: center; gap: 24px;
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius); padding: 26px 30px;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.sol:hover { border-color: var(--brand-300); box-shadow: var(--shadow); }
.sol__no {
  font-size: 26px; font-weight: 800; color: var(--brand-300);
  font-variant-numeric: tabular-nums; letter-spacing: -.03em;
}
.sol__title { font-size: 18px; font-weight: 700; color: var(--ink-900); margin-bottom: 6px; }
.sol__desc { font-size: 14.8px; color: var(--ink-500); line-height: 1.8; }
.sol__badge {
  padding: 7px 16px; border-radius: 999px; white-space: nowrap;
  background: var(--brand-50); color: var(--brand-700);
  font-size: 13px; font-weight: 700; border: 1px solid var(--brand-100);
}

/* ---------- 10. 关于 ---------- */
.about { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.about__text p { color: var(--ink-500); font-size: 16px; line-height: 1.95; margin-bottom: 18px; }
.about__points { margin-top: 28px; display: grid; gap: 14px; }
.about__points li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 15.5px; color: var(--ink-700);
}
.about__points li::before {
  content: ""; flex: none; width: 20px; height: 20px; margin-top: 3px;
  border-radius: 50%; background: var(--brand-100);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231a73e8' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: 12px; background-repeat: no-repeat; background-position: center;
}

.about__card {
  position: relative; border-radius: var(--radius-lg); padding: 40px 36px;
  background: linear-gradient(155deg, var(--brand-900), var(--brand-700));
  color: #fff; overflow: hidden; box-shadow: var(--shadow-lg);
}
.about__card::after {
  content: ""; position: absolute; width: 340px; height: 340px; right: -120px; bottom: -150px;
  border-radius: 50%; background: radial-gradient(circle, rgba(74,148,240,.30), transparent 68%);
}
.about__card h3 { position: relative; z-index: 2; font-size: 19px; font-weight: 700; margin-bottom: 24px; }
.about__meta { position: relative; z-index: 2; display: grid; gap: 18px; }
.about__meta div {
  padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.14);
}
.about__meta div:last-child { border-bottom: 0; padding-bottom: 0; }
.about__meta dt { font-size: 12.5px; color: var(--brand-300); letter-spacing: .1em; font-weight: 700; margin-bottom: 5px; }
.about__meta dd { font-size: 15.5px; color: rgba(255,255,255,.94); }
.about__card a { color: #fff; }
.about__card a:hover { color: var(--brand-300); }

/* ---------- 11. 联系 ---------- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; }
.contact__info { display: grid; gap: 16px; align-content: start; }
.cinfo {
  display: flex; align-items: flex-start; gap: 16px;
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius); padding: 22px 24px;
  transition: border-color .22s ease, box-shadow .22s ease;
}
.cinfo:hover { border-color: var(--brand-300); box-shadow: var(--shadow-sm); }
.cinfo__icon {
  width: 42px; height: 42px; border-radius: 12px; flex: none;
  display: grid; place-items: center; font-size: 19px;
  background: var(--brand-50); border: 1px solid var(--brand-100);
}
.cinfo__label { font-size: 12.5px; color: var(--ink-400); letter-spacing: .08em; font-weight: 700; margin-bottom: 3px; }
.cinfo__val { font-size: 16.5px; color: var(--ink-900); font-weight: 600; word-break: break-all; }
.cinfo__val a:hover { color: var(--brand-600); }

.form {
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius-lg); padding: 34px 32px;
  box-shadow: var(--shadow-sm);
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-700); margin-bottom: 7px; }
.field label i { color: var(--brand-600); font-style: normal; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 15px; border-radius: var(--radius-sm);
  border: 1px solid var(--ink-200); background: var(--paper);
  color: var(--ink-900); font-size: 15px; transition: .2s ease;
}
.field textarea { resize: vertical; min-height: 112px; line-height: 1.7; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--brand-500); background: var(--white);
  box-shadow: 0 0 0 3.5px rgba(26,115,232,.12);
}
.form .btn { width: 100%; justify-content: center; margin-top: 6px; }
.form__note { margin-top: 14px; font-size: 12.8px; color: var(--ink-400); line-height: 1.7; }
/* 蜜罐字段：视觉移出视口。不用 display:none —— 部分自动化工具会识别并跳过该字段 */
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.form__ok {
  display: none; margin-top: 14px; padding: 13px 16px; border-radius: var(--radius-sm);
  background: var(--brand-50); border: 1px solid var(--brand-300);
  color: var(--brand-700); font-size: 14px; font-weight: 600;
}
.form__ok.is-show { display: block; }
.form__err {
  display: none; margin-top: 14px; padding: 13px 16px; border-radius: var(--radius-sm);
  background: #fdecec; border: 1px solid #f5c2c2; color: #b3261e;
  font-size: 14px; font-weight: 600; line-height: 1.6;
}
.form__err.is-show { display: block; }

/* ---------- 12. 页脚 ---------- */
.footer {
  background: var(--brand-900); color: rgba(255,255,255,.66); padding: 62px 0 30px;
  font-size: 14.5px;
}
.footer__grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.12);
}
.footer .brand__cn { color: #fff; }
.footer .brand__en { color: rgba(255,255,255,.42); }
.footer__about { margin-top: 18px; line-height: 1.9; max-width: 320px; font-size: 14.2px; }
.footer h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; letter-spacing: .04em; }
.footer__links { display: grid; gap: 11px; }
.footer__links a:hover { color: var(--brand-300); }
.footer__contact { display: grid; gap: 12px; }
.footer__contact div { display: flex; gap: 9px; align-items: flex-start; line-height: 1.7; }
.footer__contact em { font-style: normal; opacity: .6; flex: none; }
.footer__bottom {
  padding-top: 26px; display: flex; flex-wrap: wrap; gap: 14px;
  align-items: center; justify-content: space-between; font-size: 13.5px;
}
.footer__bottom a:hover { color: var(--brand-300); }
.footer__beian { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; }
.pblock__beian { font-size: 13.5px; color: var(--ink-500); margin-top: -2px; }
.pblock__beian a { color: var(--brand-600); border-bottom: 1px solid transparent; }
.pblock__beian a:hover { border-bottom-color: var(--brand-600); }

/* ---------- 13. 内页通用 ---------- */
.page-head {
  padding: calc(var(--nav-h) + 72px) 0 64px;
  background: linear-gradient(160deg, var(--brand-900) 0%, var(--brand-800) 60%, #0d2140 100%);
  color: #fff; position: relative; overflow: hidden;
}
.page-head::after {
  content: ""; position: absolute; width: 520px; height: 520px; right: -160px; top: -200px;
  border-radius: 50%; background: radial-gradient(circle, rgba(74,148,240,.24), transparent 68%);
}
.page-head__inner { position: relative; z-index: 2; }
.page-head h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; letter-spacing: -.015em; }
.page-head p { margin-top: 14px; color: rgba(255,255,255,.78); font-size: 16.5px; max-width: 680px; line-height: 1.85; }
.crumb { font-size: 13.5px; color: var(--brand-300); margin-bottom: 14px; font-weight: 600; }
.crumb a:hover { color: #fff; }

/* 产品详情块 */
.pblock {
  display: grid; grid-template-columns: 300px 1fr; gap: 46px;
  padding: 54px 0; border-bottom: 1px solid var(--ink-200);
}
.pblock:last-child { border-bottom: 0; }
.pblock__side { position: sticky; top: calc(var(--nav-h) + 24px); align-self: start; }
.pblock__icon {
  width: 66px; height: 66px; border-radius: 20px; margin-bottom: 20px;
  display: grid; place-items: center; font-size: 30px;
  background: var(--brand-50); border: 1px solid var(--brand-100);
}
.pblock__name { font-size: 26px; font-weight: 800; color: var(--ink-900); letter-spacing: -.01em; }
.pblock__en { font-size: 12px; color: var(--ink-400); letter-spacing: .16em; text-transform: uppercase; margin-top: 5px; }
.pblock__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.pblock__body h3 {
  font-size: 17px; font-weight: 700; color: var(--ink-900);
  margin: 26px 0 12px; display: flex; align-items: center; gap: 10px;
}
.pblock__body h3:first-child { margin-top: 0; }
.pblock__body h3::before {
  content: ""; width: 4px; height: 17px; border-radius: 2px; background: var(--brand-500); flex: none;
}
.pblock__body p { color: var(--ink-500); line-height: 1.95; font-size: 15.5px; margin-bottom: 12px; }
.feat { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 14px; }
.feat li {
  display: flex; gap: 10px; align-items: flex-start;
  background: var(--paper); border: 1px solid var(--ink-100);
  border-radius: 10px; padding: 13px 15px; font-size: 14.5px; color: var(--ink-700);
}
.feat li::before {
  content: ""; flex: none; width: 17px; height: 17px; margin-top: 3px; border-radius: 50%;
  background: var(--brand-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231a73e8' stroke-width='3.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/11px no-repeat;
}

/* ---------- 14. 入场动画 ----------
   关键：动画样式挂在 .js 命名空间下。
   未启用 JS 时 .reveal 不带任何隐藏样式，内容始终可见（健壮性 + SEO 友好）。 */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1024px) {
  .section { padding: 78px 0; }
  .about { grid-template-columns: 1fr; gap: 44px; }
  .pblock { grid-template-columns: 1fr; gap: 26px; }
  .pblock__side { position: static; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 860px) {
  .nav__menu {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--ink-200);
    padding: 10px 16px 20px; box-shadow: var(--shadow);
    transform: translateY(-120%); transition: transform .3s ease;
  }
  .nav__menu.is-open { transform: translateY(0); }
  .nav__menu a { padding: 13px 16px; border-radius: 10px; font-size: 15.5px; }
  .nav__cta { margin: 8px 0 0 !important; text-align: center; }
  .nav__burger { display: block; }

  .hero { padding: calc(var(--nav-h) + 62px) 0 78px; }
  .stats { margin-top: -40px; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid, .cap-grid, .contact { grid-template-columns: 1fr; }
  .feat { grid-template-columns: 1fr; }
  .sol { grid-template-columns: 1fr; gap: 14px; }
  .sol__badge { justify-self: start; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .section { padding: 62px 0; }
  .sec-head { margin-bottom: 40px; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .stat { padding: 22px 14px; }
  .form__row { grid-template-columns: 1fr; }
  .form { padding: 26px 20px; }
  .prod { padding: 26px 22px; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   16. 移动端体验优化
   设计目标：边缘留白合理、触控友好、刘海屏安全、绝不横向溢出。
   说明：env(safe-area-inset-*) 在无刘海设备上取值为 0，故桌面端无副作用。
   ========================================================================== */

/* 16.1 导航高度纳入状态栏安全区
   依赖 --nav-h 的 hero / 内页头 / 移动端下拉菜单会自动跟随，无需逐处修改。 */
:root { --nav-h: calc(68px + env(safe-area-inset-top, 0px)); }
.nav { padding-top: env(safe-area-inset-top, 0px); }

/* 16.2 内容容器左右避让圆角屏 / 横屏刘海 */
.wrap, .nav__inner {
  padding-left: calc(24px + env(safe-area-inset-left, 0px));
  padding-right: calc(24px + env(safe-area-inset-right, 0px));
}

/* 16.3 页脚底部避让 iPhone 底部横条 */
.footer { padding-bottom: calc(30px + env(safe-area-inset-bottom, 0px)); }

/* 16.4 触控基础优化 */
* { -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
a, button, input, textarea, select { touch-action: manipulation; }

/* 16.5 防横向溢出：长英文、URL、宽表格、媒体元素 */
img, svg, video, iframe { max-width: 100%; }
h1, h2, h3, h4, p, li, dd, dt, .footer__contact div { overflow-wrap: break-word; word-break: break-word; }
table { display: block; width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* 16.6 移动端触控热区：可点元素不小于 44×44（iOS 人机界面指南下限） */
@media (max-width: 860px) {
  /* 主导航：品牌标识与汉堡按钮 */
  .nav .brand { min-height: 44px; display: inline-flex; align-items: center; }
  .nav__burger { min-width: 44px; min-height: 44px; }

  /* 主按钮与菜单项 */
  .btn {
    min-height: 48px; padding-top: 0; padding-bottom: 0;
    display: inline-flex; align-items: center; justify-content: center;
  }
  .nav__menu a { min-height: 48px; display: flex; align-items: center; }
  .nav__menu { max-height: calc(100vh - var(--nav-h)); overflow-y: auto; -webkit-overflow-scrolling: touch; }

  /* 联系方式：移动端最常点击的是"打电话"，给足热区 */
  .cinfo__val a, .footer__contact a, .about__meta dd a { min-height: 44px; display: inline-flex; align-items: center; }

  /* 页脚导航、品牌标识、底部信息与面包屑 */
  .footer .brand { min-height: 44px; display: inline-flex; align-items: center; }
  .footer__links a { min-height: 44px; display: inline-flex; align-items: center; }
  .footer__bottom a, .footer__beian a { min-height: 44px; display: inline-flex; align-items: center; }
  .crumb a { min-height: 44px; display: inline-flex; align-items: center; }

  /* iOS Safari 对 <16px 的输入框会自动放大整页，强制 16px 规避 */
  .field input, .field textarea, .field select { font-size: 16px; }
}

/* 16.7 触屏设备取消 hover 位移，避免点击后卡片"粘"在浮起状态 */
@media (hover: none) {
  .btn--primary:hover, .btn--ghost:hover, .prod:hover, .cap:hover { transform: none; }
}

/* 16.8 横屏手机（高度受限）：压缩顶部留白，避免首屏全是空白 */
@media (max-width: 900px) and (orientation: landscape) and (max-height: 520px) {
  .hero, .page-head { padding-top: calc(var(--nav-h) + 34px); }
  .section { padding: 52px 0; }
  .hero__actions { margin-top: 22px; }
}

/* 16.9 小屏手机（≤380px）：收紧留白，保证内容不显拥挤 */
@media (max-width: 380px) {
  .wrap, .nav__inner {
    padding-left: calc(14px + env(safe-area-inset-left, 0px));
    padding-right: calc(14px + env(safe-area-inset-right, 0px));
  }
  .stat { padding: 18px 10px; }
}

/* 16.10 移动端排版微调 */
@media (max-width: 560px) {
  body { line-height: 1.72; }
  /* 首屏标题跟随视口缩放：保证「更简单、更安全、更高效」11 字不掉成孤字行 */
  .hero h1 { font-size: clamp(23px, 7vw, 30px); }
  .hero__badge { margin-bottom: 22px; }
}

/* ==========================================================================
   17. APP 下载模块（download.html 下载中心 + 产品页内联入口）
   二维码统一指向下载中心锚点，换版本时无需重制二维码。
   ========================================================================== */

/* 17.1 下载中心：卡片网格 */
.dl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(248px, 1fr));
  gap: 22px;
}
.dlcard {
  display: flex; flex-direction: column; align-items: center;
  background: var(--white); border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg); padding: 26px 22px 24px;
  box-shadow: var(--shadow-sm); text-align: center;
  scroll-margin-top: calc(var(--nav-h) + 26px);
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
.dlcard:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: var(--brand-100); }
.dlcard__head { display: flex; align-items: center; justify-content: center; gap: 10px; }
.dlcard__icon { font-size: 24px; line-height: 1; }
.dlcard__name { font-size: 19px; font-weight: 700; color: var(--ink-900); letter-spacing: -.01em; }
.dlcard__sub { font-size: 12.5px; color: var(--ink-400); margin-top: 4px; }

.dlcard__qr {
  margin: 18px auto 15px; padding: 9px; background: #fff;
  border: 1px solid var(--ink-100); border-radius: var(--radius);
}
.dlcard__qr img { width: 164px; height: 164px; }

.dlcard__meta {
  display: flex; flex-wrap: wrap; gap: 7px; justify-content: center;
  font-size: 12.5px; color: var(--ink-500); margin-bottom: 16px;
}
.dlcard__meta span { background: var(--paper); border-radius: 999px; padding: 3px 11px; }
.dlcard__btn { width: 100%; justify-content: center; }
.dlcard__tip { font-size: 12px; color: var(--ink-400); margin-top: 12px; line-height: 1.65; }

/* 17.2 产品页内联下载模块 */
.dlmini { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.dlmini__item {
  display: flex; align-items: center; gap: 14px; flex: 1 1 260px;
  background: var(--paper); border: 1px solid var(--ink-100);
  border-radius: var(--radius); padding: 13px 16px;
}
.dlmini__qr { flex: none; background: #fff; padding: 5px; border-radius: 8px; border: 1px solid var(--ink-100); }
.dlmini__qr img { width: 78px; height: 78px; }
.dlmini__body { min-width: 0; }
.dlmini__title { display: block; font-size: 14.5px; font-weight: 600; color: var(--ink-900); }
.dlmini__meta { display: block; font-size: 12.5px; color: var(--ink-500); margin-top: 3px; }
.dlmini__go {
  display: inline-flex; align-items: center; gap: 4px; margin-top: 7px;
  font-size: 13px; font-weight: 600; color: var(--brand-600);
}
.dlmini__go:hover { color: var(--brand-500); }

/* 17.3 微信内置浏览器提示（默认隐藏，由 JS 依据 UA 显示） */
.dl-wx { display: none; }
.dl-wx.is-on {
  display: block;
  background: var(--brand-50); border: 1px solid var(--brand-100);
  border-radius: var(--radius); padding: 14px 18px; margin-bottom: 26px;
  font-size: 14px; color: var(--brand-700); line-height: 1.75;
}
.dl-wx strong { color: var(--brand-800); }

/* 17.4 下载模块响应式 */
@media (max-width: 860px) {
  .dl-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
  .dlcard { padding: 22px 18px 20px; }
  .dlcard__qr img { width: 148px; height: 148px; }
}
@media (max-width: 560px) {
  .dl-grid { grid-template-columns: 1fr; }
  .dlmini__item { flex: 1 1 100%; }
  .dlcard__btn { min-height: 48px; }
}
@media (hover: none) {
  .dlcard:hover { transform: none; }
}