/* ==========================================================================
   众创源（上海）网络科技有限公司 企业官网
   共享样式表  v1.0
   ========================================================================== */
:root {
  --c-navy: #071120;
  --c-navy-2: #0b1b30;
  --c-navy-3: #122a4a;
  --a1: #0f6bff;
  --a2: #17c6ef;
  --grad: linear-gradient(120deg, #0f6bff 0%, #17c6ef 100%);
  --grad-soft: linear-gradient(120deg, rgba(15, 107, 255, .10), rgba(23, 198, 239, .10));
  --ink: #12233c;
  --ink-2: #46586f;
  --muted: #6d7f96;
  --bg: #ffffff;
  --bg-soft: #f5f8fd;
  --line: #e4ebf4;
  --card: #ffffff;
  --ok: #0faf7c;
  --r-lg: 20px;
  --r-md: 14px;
  --shadow: 0 10px 34px rgba(11, 40, 90, .08);
  --shadow-lg: 0 26px 60px rgba(7, 24, 46, .16);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
h1, h2, h3, h4 { line-height: 1.35; font-weight: 700; color: var(--ink); }
::selection { background: rgba(15, 107, 255, .85); color: #fff; }

.container { width: min(1200px, 92%); margin: 0 auto; }
.section { padding: 84px 0; }
.section.tint { background: var(--bg-soft); }
.section.dark { background: var(--c-navy); color: #c6d4e6; }
.section.dark h2, .section.dark h3 { color: #fff; }

/* ---------- 通用标题 ---------- */
.sec-head { text-align: center; max-width: 780px; margin: 0 auto 52px; }
.sec-head .eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--a1); font-weight: 700; margin-bottom: 14px;
}
.sec-head .eyebrow::before, .sec-head .eyebrow::after { content: ""; width: 26px; height: 2px; background: var(--grad); }
.sec-head h2 { font-size: clamp(26px, 3.4vw, 38px); }
.sec-head p.sub { color: var(--muted); margin-top: 14px; font-size: 15px; }
.sec-head.left { text-align: left; margin-left: 0; }
.sec-head.left .eyebrow::before { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  transition: transform .25s, box-shadow .25s, background .25s, color .25s;
  white-space: nowrap;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 12px 26px rgba(15, 107, 255, .32); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 34px rgba(15, 107, 255, .42); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, .55); color: #fff; }
.btn-ghost:hover { background: #fff; color: var(--c-navy); }
.btn-ghost-dark { border: 1px solid var(--line); color: var(--ink-2); background: #fff; }
.btn-ghost-dark:hover { border-color: var(--a1); color: var(--a1); }
.btn-sm { padding: 9px 18px; font-size: 14px; }

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 999;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(11, 40, 90, .07);
  transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: 0 8px 30px rgba(11, 40, 90, .10); }
.site-header .nav { display: flex; align-items: center; gap: 26px; height: 76px; }

.logo { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.logo-mark {
  width: 48px; height: 48px; border-radius: 10px; flex: 0 0 auto;
  object-fit: contain; background: transparent;
  transition: transform .25s, filter .25s;
}
a.logo:hover .logo-mark { transform: translateY(-2px) scale(1.04); }
.logo-txt { line-height: 1.1; font-weight: 800; font-size: 17px; color: var(--ink); letter-spacing: 1px; }
.logo-txt small { display: block; font-size: 9px; font-weight: 600; letter-spacing: .28em; color: var(--a1); margin-top: 2px; }

.nav-menu ul { display: flex; align-items: center; gap: 6px; }
.nav-menu > ul > li { position: relative; }
.nav-menu > ul > li > a {
  display: flex; align-items: center; gap: 4px;
  padding: 10px 16px; font-size: 15.5px; font-weight: 600; color: var(--ink-2);
  border-radius: 10px;
}
.nav-menu > ul > li > a .caret { transition: transform .25s; font-size: 11px; }
.nav-menu > ul > li > a:hover,
.nav-menu > ul > li.active > a { color: var(--a1); background: rgba(15, 107, 255, .07); }
.nav-menu > ul > li.has-sub:hover > a .caret { transform: rotate(180deg); }

.sub {
  position: absolute; top: calc(100% + 14px); left: 0; min-width: 236px;
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 8px; box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .25s, transform .25s, visibility .25s;
  display: flex; flex-direction: column; gap: 2px;
}
.sub::before { content: ""; position: absolute; top: -14px; left: 0; right: 0; height: 16px; }
.has-sub:hover .sub { opacity: 1; visibility: visible; transform: translateY(0); }
.sub li { width: 100%; }
.sub a {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 10px 16px; border-radius: 10px; font-size: 14.5px;
  color: var(--ink-2); font-weight: 500; white-space: nowrap;
  border-left: 3px solid transparent;
  transition: background .2s, color .2s, border-color .2s, padding-left .2s;
}
.sub a i { font-style: normal; color: var(--a1); font-weight: 800; }
.sub a:hover { background: var(--grad-soft); color: var(--a1); border-left-color: var(--a1); padding-left: 21px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px; align-items: center; justify-content: center; border-radius: 10px; background: rgba(15, 107, 255, .08); }
.nav-toggle span { width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative; min-height: 92vh; padding: 150px 0 90px;
  background:
    radial-gradient(1100px 560px at 84% -10%, rgba(23, 198, 239, .28), transparent 60%),
    radial-gradient(900px 520px at -10% 40%, rgba(15, 107, 255, .32), transparent 60%),
    linear-gradient(160deg, #071120 0%, #0b1b30 55%, #0e2547 100%);
  color: #fff; display: flex; align-items: center; overflow: hidden;
}
.hero .grid-lines {
  position: absolute; inset: 0; pointer-events: none; opacity: .5;
  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: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 90% 90% at 50% 20%, #000 40%, transparent 75%);
          mask-image: radial-gradient(ellipse 90% 90% at 50% 20%, #000 40%, transparent 75%);
}
.hero .glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; pointer-events: none; }
.hero .glow.g1 { width: 420px; height: 420px; left: -120px; bottom: -120px; background: #0f6bff; }
.hero .glow.g2 { width: 300px; height: 300px; right: 8%; top: 18%; background: #17c6ef; }

.hero-inner { position: relative; z-index: 2; width: min(1200px, 92%); margin: 0 auto; display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.hero .badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px; font-size: 13px; color: #cfe6ff; margin-bottom: 22px;
}
.hero .badge i { width: 7px; height: 7px; border-radius: 50%; background: #27efae; box-shadow: 0 0 10px #27efae; }
.hero h1 { font-size: clamp(34px, 4.6vw, 56px); color: #fff; font-weight: 800; letter-spacing: .5px; }
.hero h1 .grad-text { background: linear-gradient(100deg, #6ec4ff, #3fe0ff 70%, #8ff0ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { margin: 22px 0 12px; font-size: 17px; color: #c2d3e6; max-width: 560px; }
.hero p.lead b { color: #fff; }
.hero .points { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 18px 0 30px; }
.hero .points span { font-size: 14px; color: #a9c2de; display: inline-flex; align-items: center; gap: 7px; }
.hero .points svg { color: #3fe0ff; }
.hero .ctas { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-card {
  position: relative; background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .16); border-radius: 24px;
  padding: 28px; backdrop-filter: blur(6px);
}
.hero-card .hc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.hero-card .hc-top h3 { color: #fff; font-size: 17px; }
.hero-card .hc-top span { font-size: 12px; color: #8fb2d8; }
.hero-stack { display: grid; gap: 12px; }
.hero-stack .hs-item {
  display: flex; align-items: center; gap: 14px; padding: 14px 16px;
  background: rgba(255, 255, 255, .07); border-radius: 14px; border: 1px solid rgba(255, 255, 255, .1);
  transition: .25s;
}
.hero-stack .hs-item:hover { background: rgba(23, 198, 239, .16); transform: translateX(4px); }
.hs-ico { width: 44px; height: 44px; flex: 0 0 auto; border-radius: 12px; display: grid; place-items: center; color: #fff; background: var(--grad); box-shadow: 0 8px 16px rgba(15, 107, 255, .4); }
.hero-stack .hs-item:nth-child(2) .hs-ico { background: linear-gradient(120deg, #0a5fd8, #21c8a0); }
.hero-stack .hs-item:nth-child(3) .hs-ico { background: linear-gradient(120deg, #5b3df0, #17c6ef); }
.hs-txt b { color: #fff; font-size: 15.5px; }
.hs-txt p { font-size: 12.5px; color: #9cb9d8; margin-top: 1px; }

/* 滚动字母带 */
.marquee { background: var(--c-navy); border-block: 1px solid rgba(255, 255, 255, .07); overflow: hidden; padding: 18px 0; }
.marquee .track { display: flex; width: max-content; animation: scrollX 28s linear infinite; }
.marquee span { font-size: 22px; font-weight: 800; color: #fff; opacity: .9; white-space: nowrap; padding: 0 28px; display: inline-flex; align-items: center; gap: 28px; letter-spacing: .08em; }
.marquee span::after { content: "✦"; color: var(--a2); font-size: 14px; opacity: .8; }
@keyframes scrollX { to { transform: translateX(-50%); } }

/* ============================================================
   数据条
   ============================================================ */
.stats-band { background: #fff; border-bottom: 1px solid var(--line); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { text-align: center; padding: 46px 16px; border-right: 1px solid var(--line); position: relative; }
.stat:last-child { border-right: 0; }
.stat .num { font-size: clamp(32px, 4vw, 46px); font-weight: 800; display: flex; align-items: baseline; justify-content: center; gap: 2px; }
.stat .num .n, .stat .num .unit { color: transparent; background: var(--grad); -webkit-background-clip: text; background-clip: text; font-style: normal; }
.stat .num .unit { font-size: 20px; }
.stat p { color: var(--muted); font-size: 14px; margin-top: 4px; }

/* ============================================================
   服务卡片
   ============================================================ */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 34px 30px; position: relative; overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(15, 107, 255, .4); }
.card .ico { width: 58px; height: 58px; border-radius: 16px; display: grid; place-items: center; color: #fff; background: var(--grad); box-shadow: 0 10px 20px rgba(15, 107, 255, .28); margin-bottom: 20px; }
.card .ico.soft { color: var(--a1); background: var(--grad-soft); box-shadow: none; }
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; }
.card ul.tick { margin-top: 14px; display: grid; gap: 7px; }
.card ul.tick li { display: flex; gap: 9px; font-size: 13.5px; color: var(--ink-2); align-items: flex-start; }
.card ul.tick li svg { flex: 0 0 auto; margin-top: 4px; color: var(--a1); }
.card .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-weight: 600; font-size: 14px; color: var(--a1); }
.card .more svg { transition: transform .25s; }
.card:hover .more svg { transform: translateX(4px); }

/* 编号角标 */
.card .no { position: absolute; top: 22px; right: 26px; font-size: 40px; font-weight: 800; color: transparent; -webkit-text-stroke: 1px #d6e3f3; line-height: 1; }

/* ============================================================
   Section split / feature rows
   ============================================================ */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.feature-row .visual { position: relative; }
.fake-browser {
  border: 1px solid var(--line); border-radius: 18px; background: #fff;
  box-shadow: var(--shadow-lg); overflow: hidden;
}
.fb-bar { display: flex; align-items: center; gap: 6px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: #fbfdff; }
.fb-bar i { width: 10px; height: 10px; border-radius: 50%; background: #ff5f57; }
.fb-bar i:nth-child(2) { background: #febc2e; }
.fb-bar i:nth-child(3) { background: #28c840; }
.fb-bar .addr { margin-left: 10px; font-size: 12px; color: var(--muted); background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 2px 14px; flex: 1; max-width: 70%; }
.fb-body { padding: 22px; background: linear-gradient(150deg, #eef4ff, #f6fbff); }
.fb-body .mini-nav { display: flex; gap: 8px; margin-bottom: 16px; }
.fb-body .mini-nav span { width: 48px; height: 8px; border-radius: 6px; background: #cfdff4; }
.fb-body .mini-nav span:first-child { width: 72px; background: var(--a1); }
.fb-hero { background: linear-gradient(120deg, #0b1b30, #1653c0); border-radius: 12px; padding: 20px; }
.fb-hero .ln { height: 10px; border-radius: 6px; background: rgba(255, 255, 255, .85); width: 55%; margin-bottom: 10px; }
.fb-hero .ln.w40 { width: 40%; }
.fb-hero .ln.dim { background: rgba(255, 255, 255, .4); }
.fb-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 14px; }
.fb-cols span { height: 34px; border-radius: 8px; background: #d6e4f7; }
.fb-cols span:nth-child(2) { background: #bcd8f8; }
.fb-cols span:nth-child(3) { background: #9ec7ff; }

/* 手机模拟 */
.phone-frame {
  width: 240px; border-radius: 36px; border: 6px solid #0c1a30; background: #0b1b30;
  box-shadow: var(--shadow-lg); overflow: hidden; margin: 0 auto;
}
.phone-notch { width: 90px; height: 18px; background: #0c1a30; border-radius: 0 0 14px 14px; margin: 0 auto; }
.phone-screen { background: linear-gradient(170deg, #0b1b30, #12408c); padding: 18px 14px 26px; }
.phone-screen .app-top { display: flex; justify-content: space-between; margin-bottom: 14px; }
.phone-screen .app-top b { color: #fff; font-size: 13px; }
.phone-screen .app-top span { color: rgba(255, 255, 255, .7); font-size: 11px; }
.phone-screen .banner { background: rgba(255, 255, 255, .12); border-radius: 10px; height: 60px; margin-bottom: 12px; display: grid; place-items: center; color: #fff; font-size: 12px; letter-spacing: .1em; }
.phone-screen .goods { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.phone-screen .goods i { height: 44px; border-radius: 8px; background: rgba(255, 255, 255, .14); }
.float-chip {
  position: absolute; bottom: 22px; left: -14px; background: #fff; border-radius: 12px;
  padding: 12px 16px; box-shadow: var(--shadow-lg); display: flex; gap: 10px; align-items: center;
}
.float-chip b { font-size: 13px; color: var(--ink); display: block; }
.float-chip small { color: var(--muted); font-size: 11px; }
.float-chip .dot { width: 38px; height: 38px; border-radius: 10px; background: var(--grad); display: grid; place-items: center; color: #fff; }

/* ============================================================
   步骤
   ============================================================ */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; counter-reset: step; }
.step {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 26px 20px; text-align: center; position: relative; transition: .3s;
}
.step:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.step::before {
  counter-increment: step; content: "0" counter(step);
  width: 46px; height: 46px; margin: 0 auto 14px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 800; font-size: 18px; color: #fff;
  background: var(--grad); box-shadow: 0 8px 18px rgba(15, 107, 255, .3);
}
.step b { font-size: 15.5px; display: block; margin-bottom: 6px; }
.step p { font-size: 12.5px; color: var(--muted); }
.steps.col-4 { grid-template-columns: repeat(4, 1fr); }

/* ============================================================
   案例
   ============================================================ */
.case-card { border-radius: var(--r-lg); overflow: hidden; background: #fff; border: 1px solid var(--line); transition: transform .3s, box-shadow .3s; display: flex; flex-direction: column; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-cover { height: 176px; position: relative; display: grid; place-items: center; overflow: hidden; color: #fff; }
.case-cover svg { opacity: .9; }
.case-cover .tag { position: absolute; top: 14px; left: 14px; font-size: 12px; padding: 4px 12px; border-radius: 999px; background: rgba(7, 17, 32, .35); border: 1px solid rgba(255, 255, 255, .4); backdrop-filter: blur(4px); }
.case-cover .initials { font-size: 30px; font-weight: 800; letter-spacing: .05em; opacity: .95; position: relative; }
.c1 { background: linear-gradient(140deg, #0b1b30, #2f6bff); }
.c2 { background: linear-gradient(140deg, #072c46, #17c6ef); }
.c3 { background: linear-gradient(140deg, #151b4b, #5b6cff); }
.c4 { background: linear-gradient(140deg, #0e2747, #0f9bd9); }
.c5 { background: linear-gradient(140deg, #241b4b, #7a4dff); }
.c6 { background: linear-gradient(140deg, #00353a, #18b8a0); }
.case-body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.case-body h3 { font-size: 17px; }
.case-body p { font-size: 13.5px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.case-body .meta { margin-top: auto; font-size: 12.5px; color: var(--a1); font-weight: 600; padding-top: 10px; display: flex; justify-content: space-between; align-items: center; border-top: 1px dashed var(--line); }

/* 客户 logo 墙：灰阶「字标」占位；图片放入 Html/img/clients/ 同名文件后自动替换显示 */
.logo-wall { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.logo-wall .lw {
  height: 88px; display: flex; align-items: center; justify-content: center;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 10px; overflow: hidden; transition: .3s;
}
.logo-wall .lw img {   max-height: 48px; max-width: 86%; object-fit: contain;opacity: .72; transition: .3s; }
.logo-wall .lw img.loaded { display: block; }
.logo-wall .lw .wm {
  font-weight: 800; font-size: 15.5px; color: var(--ink-2);
  letter-spacing: .05em; white-space: nowrap; transition: color .3s;
}
.logo-wall .lw:nth-child(even) .wm {
  font-weight: 700; letter-spacing: .14em;
  font-family: "Songti SC", "SimSun", "宋体", serif;
}
.logo-wall .lw:hover { border-color: var(--a1); box-shadow: var(--shadow); transform: translateY(-3px); }
.logo-wall .lw:hover .wm { color: var(--a1); }
.logo-wall .lw:hover img { filter: grayscale(0); opacity: 1; }
.dark .logo-wall .lw { background: rgba(255, 255, 255, .06); border-color: rgba(255, 255, 255, .14); }
.dark .logo-wall .lw .wm { color: #cfe2f6; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
details.faq { background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; transition: box-shadow .3s, border-color .3s; }
details.faq[open] { border-color: rgba(15, 107, 255, .45); box-shadow: var(--shadow); }
details.faq summary {
  cursor: pointer; list-style: none; display: flex; align-items: center; gap: 14px;
  padding: 19px 22px; font-weight: 600; font-size: 15.5px; color: var(--ink);
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary .q { width: 26px; height: 26px; flex: 0 0 auto; border-radius: 8px; background: var(--grad-soft); color: var(--a1); display: grid; place-items: center; font-size: 13px; font-weight: 800; }
details.faq summary .chev { margin-left: auto; color: var(--muted); transition: transform .3s; flex: 0 0 auto; }
details.faq[open] summary .chev { transform: rotate(180deg); }
details.faq .ans { padding: 0 22px 20px 62px; font-size: 14.5px; color: var(--ink-2); }
details.faq .ans p + p { margin-top: 8px; }

/* ============================================================
   CTA 横幅
   ============================================================ */
.cta-band { background: var(--grad); border-radius: 26px; position: relative; overflow: hidden; padding: 54px 60px; color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-band::after { content: ""; position: absolute; right: -70px; top: -70px; width: 280px; height: 280px; border-radius: 50%; background: rgba(255, 255, 255, .14); }
.cta-band::before { content: ""; position: absolute; right: 30px; bottom: -120px; width: 260px; height: 260px; border-radius: 50%; border: 40px solid rgba(255, 255, 255, .12); }
.cta-band h3 { color: #fff; font-size: clamp(22px, 3vw, 30px); }
.cta-band p { color: rgba(255, 255, 255, .85); margin-top: 8px; font-size: 15px; }
.cta-band .btn { position: relative; z-index: 2; }
.cta-band .btn-white { background: #fff; color: var(--a1); }
.cta-band .btn-white:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(0, 0, 0, .2); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { background: var(--c-navy); color: #93a8c4; margin-top: 0; }
.footer-top { padding: 64px 0 44px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 44px; }
.site-footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.site-footer .f-about { width：400px;}
.site-footer .f-about p { font-size: 13.5px; margin: 16px 0 20px; }
.site-footer .logo-txt { color: #fff; }
.f-links li { margin-bottom: 10px; }
.f-links a { font-size: 14px; color: #93a8c4; display: inline-flex; align-items: center; gap: 8px; }
.f-links a::before { content: "›"; color: var(--a2); font-weight: 700; }
.f-links a:hover { color: #fff; padding-left: 2px; }
.f-contact li { display: flex; gap: 12px; margin-bottom: 14px; font-size: 13.5px; }
.f-contact li .fi { color: var(--a2); flex: 0 0 auto; margin-top: 3px; }
.f-contact a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 22px 0; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12.5px; color: #6d82a0; }
.footer-bottom a { color: #9db3d0; }
.footer-bottom a:hover { color: #fff; }

/* ============================================================
   Page hero（内页）
   ============================================================ */
.page-hero { position: relative; background: linear-gradient(160deg, #071120, #0e2547 80%); color: #fff; padding: 150px 0 70px; overflow: hidden; }
.page-hero .grid-lines { position: absolute; inset: 0; opacity: .4; background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px); background-size: 56px 56px; }
.page-hero .container { position: relative; z-index: 2; }
.page-hero .crumb { font-size: 13px; color: #7fa6d4; margin-bottom: 16px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.page-hero .crumb a:hover { color: #fff; }
.page-hero .crumb .sep { color: #3a5d88; }
.page-hero h1 { color: #fff; font-size: clamp(30px, 4vw, 44px); }
.page-hero p { color: #a9c2de; margin-top: 14px; max-width: 720px; font-size: 16px; }

/* ============================================================
   About
   ============================================================ */
.about-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: center; }
.vision-card { background: var(--c-navy); border-radius: 24px; padding: 40px 34px; color: #c8d8ea; position: relative; overflow: hidden; }
.vision-card::after { content: ""; position: absolute; width: 200px; height: 200px; right: -70px; bottom: -70px; border-radius: 50%; background: radial-gradient(circle, rgba(23, 198, 239, .35), transparent 70%); }
.vision-card h3 { color: #fff; font-size: 22px; margin-bottom: 16px; }
.vision-card .quote { font-size: 16px; color: #fff; font-weight: 600; line-height: 1.9; margin-bottom: 14px; }
.vision-card p { font-size: 14px; }
.org-chart { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.org-chart .oc { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px 12px; text-align: center; transition: .3s; }
.org-chart .oc:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(15, 107, 255, .4); }
.org-chart .oc .oc-num { font-size: 24px; font-weight: 800; color: var(--a1); }
.org-chart .oc p { font-size: 13px; color: var(--muted); margin-top: 2px; }

.timeline { position: relative; max-width: 820px; margin: 0 auto; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--a1), var(--a2)); }
.tl-item { position: relative; padding: 0 0 34px 24px; }
.tl-item::before { content: ""; position: absolute; left: -28px; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--a1); box-shadow: 0 0 0 5px rgba(15, 107, 255, .15); }
.tl-item:last-child { padding-bottom: 0; }
.tl-item .year { display: inline-block; font-size: 13px; font-weight: 800; color: var(--a1); background: var(--grad-soft); padding: 3px 14px; border-radius: 999px; margin-bottom: 8px; }
.tl-item h3 { font-size: 18px; margin-bottom: 4px; }
.tl-item p { font-size: 14px; color: var(--muted); }

.value-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.value-item { text-align: center; padding: 34px 24px; }
.value-item .ico { margin: 0 auto 18px; }

/* ============================================================
   联系我们
   ============================================================ */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.25fr; gap: 40px; }
.contact-info { display: grid; gap: 18px; align-content: start; }
.ci-card { display: flex; gap: 18px; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 24px; transition: .3s; }
.ci-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.ci-card .ci-ico { width: 52px; height: 52px; flex: 0 0 auto; border-radius: 14px; background: var(--grad-soft); color: var(--a1); display: grid; place-items: center; }
.ci-card b { font-size: 16px; display: block; margin-bottom: 6px; }
.ci-card p, .ci-card a { font-size: 14px; color: var(--muted); line-height: 1.8; }
.ci-card a:hover { color: var(--a1); }

.contact-form { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 40px; box-shadow: var(--shadow); }
.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-2); margin-bottom: 7px; }
.field label i { color: #e0462f; font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 15px; border: 1.5px solid var(--line); border-radius: 12px;
  font-size: 14.5px; font-family: inherit; color: var(--ink); background: #fbfdff; transition: .25s; outline: none;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--a1); background: #fff; box-shadow: 0 0 0 4px rgba(15, 107, 255, .1); }
.form-success { display: none; align-items: center; gap: 12px; background: #e9f9f3; border: 1px solid #b9ecd9; color: var(--ok); padding: 14px 18px; border-radius: 12px; font-size: 14px; margin-top: 14px; }
.form-success.show { display: flex; }
.form-error { display: none; align-items: center; gap: 10px; background: #fdeceb; border: 1px solid #f2b8b3; color: #b3261e; padding: 14px 18px; border-radius: 12px; font-size: 14px; margin-top: 14px; }
.form-error.show { display: flex; }
.form-error svg { flex: 0 0 auto; }
.form-error a { color: inherit; font-weight: 700; text-decoration: underline; }
button:disabled { cursor: not-allowed; opacity: .75; }

/* ============================================================
   Toolbar / 过滤器
   ============================================================ */
.filter-bar { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.filter-bar button { padding: 9px 22px; border-radius: 999px; border: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--ink-2); background: #fff; transition: .25s; }
.filter-bar button:hover { border-color: var(--a1); color: var(--a1); }
.filter-bar button.on { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 8px 18px rgba(15, 107, 255, .3); }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ============================================================
   徽标小图标（服务能力点）
   ============================================================ */
.cap-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 18px; }
.cap-list li { display: flex; gap: 10px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 13px 15px; font-size: 13.5px; color: var(--ink-2); }
.cap-list li svg { flex: 0 0 auto; color: var(--a1); margin-top: 3px; }
.cap-list li b { color: var(--ink); }

/* ============================================================
   滚动入场
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.on { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .grid-3, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-card { max-width: 560px; }
  .feature-row { grid-template-columns: 1fr; gap: 40px; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps.col-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .logo-wall { grid-template-columns: repeat(4, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .value-list { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
  .org-chart { grid-template-columns: repeat(3, 1fr); }
  /* 导航折叠 */
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; inset: 76px 0 0 auto; width: min(330px, 88vw); background: #fff;
    flex-direction: column; padding: 22px; height: calc(100vh - 76px); overflow-y: auto;
    transform: translateX(105%); transition: transform .35s ease;
    border-left: 1px solid var(--line); box-shadow: var(--shadow-lg);
  }
  body.nav-open .nav-menu { transform: translateX(0); }
  .nav-menu ul { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-menu > ul > li > a { justify-content: space-between; padding: 13px 12px; }
  .sub { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 4px 0 6px 10px; display: none; }
  .has-sub.open .sub { display: flex; flex-direction: column; }
}
@media (max-width: 760px) {
  .section { padding: 60px 0; }
  .grid-2, .grid-3, .case-grid, .value-list { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .steps, .steps.col-4 { grid-template-columns: 1fr 1fr; }
  .org-chart { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .cta-band { padding: 38px 26px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .logo-wall { grid-template-columns: repeat(3, 1fr); }
  .contact-form { padding: 26px 20px; }
  .marquee span { font-size: 17px; }
  .page-hero { padding: 120px 0 54px; }
  .cap-list { grid-template-columns: 1fr; }
}

/* 无障碍：跳过链接留白 */
.skip { position: absolute; left: -999px; }

/* ============================================================
   头部细节优化：渐变顶线 + 导航右侧联系组 + Logo 图片
   ============================================================ */
.site-header::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); z-index: 2; pointer-events: none;
}
/* 页脚为深色底，logo 图片加白色底衬，保证清晰可见 */
.site-footer .logo-mark { background: #fff; padding: 4px; border-radius: 10px; }
.logo-txt { letter-spacing: .5px; }
.logo-txt small { letter-spacing: .18em; }

/* ============================================================
   导航右侧联系组：邮箱 451159198@qq.com ＋ 电话 150-0005-5825（李先生）
   ============================================================ */
.site-header .nav { width: min(1400px, 96%); }
.nav-menu { display: flex; align-items: center; }
.nav-contact {
  display: flex; align-items: center; gap: 16px;
  margin-left: 10px; padding-left: 18px;
  border-left: 1px solid var(--line);
  white-space: nowrap;
}
.nav-contact .nc-item {
  display: flex; align-items: center; gap: 7px;
  font-size: 15px; font-weight: 800; color: var(--a1);
  letter-spacing: .02em; transition: color .25s;
}
.nav-contact .nc-item svg { flex: 0 0 auto; color: var(--a2); transition: transform .25s; }
.nav-contact .nc-item em {
  font-style: normal; font-size: 12.5px; font-weight: 600;
  color: var(--ink-2); letter-spacing: 0;
}
.nav-contact .nc-item:hover { color: var(--a2); }
.nav-contact .nc-item:hover svg { transform: translateY(-2px) scale(1.08); }

/* 宽度不足时优先省略“（李先生）”，保证邮箱与号码完整 */
@media (max-width: 1180px) {
  .nav-contact .nc-item em { display: none; }
}
/* 移动端抽屉：联系组纵向排布，放在菜单下方 */
@media (max-width: 1080px) {
  .nav-contact {
    flex-direction: column; align-items: stretch; gap: 12px;
    margin: 16px 0 0; padding: 16px 2px 0;
    border-left: 0; border-top: 1px solid var(--line);
  }
  .nav-contact .nc-item { font-size: 15.5px; }
  .nav-contact .nc-item em { display: inline; }
}

/* ============================================================
   右侧悬浮：电话免费咨询 + 微信二维码入口 / 扫码弹窗
   ============================================================ */
.side-bar {
  position: fixed; right: 18px; top: 50%; transform: translateY(-50%);
  z-index: 960; display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.side-consult,
.side-wechat {
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  min-width: 124px; padding: 12px 12px 14px; border-radius: 22px;
  text-align: center; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform .3s, box-shadow .3s, border-color .3s;
  animation: scIn .6s ease both;
}
.side-consult {
  background: linear-gradient(135deg, #0a5fd8, #0f6bff 55%, #17c6ef);
  color: #fff; border: 1px solid rgba(255, 255, 255, .28);
  box-shadow: 0 18px 44px rgba(15, 107, 255, .45);
}
.side-consult:hover { transform: translateY(-4px); box-shadow: 0 22px 52px rgba(15, 107, 255, .56); }
.side-wechat {
  background: #fff; color: #07c160; border: 1px solid rgba(7, 193, 96, .25);
  box-shadow: 0 14px 34px rgba(11, 66, 42, .16); animation-delay: .08s;
}
.side-wechat:hover { transform: translateY(-4px); border-color: #07c160; box-shadow: 0 18px 44px rgba(7, 193, 96, .3); }

.sc-ico { width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center; }
.side-consult .sc-ico {
  background: rgba(255, 255, 255, .22);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .45);
  animation: scPulse 2.4s ease-out infinite;
}
.side-wechat .sc-ico { background: #07c160; color: #fff; box-shadow: 0 6px 14px rgba(7, 193, 96, .35); }
.sc-ico svg { display: block; }
.sc-lab { font-size: 12px; font-weight: 600; letter-spacing: .14em; opacity: .95; }
.side-wechat .sc-note { font-size: 11px; font-weight: 600; color: #1a9e63; letter-spacing: .02em; }
.side-consult .sc-tel { font-size: 14px; font-weight: 800; letter-spacing: .3px; white-space: nowrap; }

@keyframes scIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes scPulse {
  0%   { box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .45), 0 0 0 0 rgba(255, 255, 255, .5); }
  70%  { box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .45), 0 0 0 14px rgba(255, 255, 255, 0); }
  100% { box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .45), 0 0 0 0 rgba(255, 255, 255, 0); }
}

/* 微信扫码弹窗 */
.wx-modal {
  position: fixed; inset: 0; z-index: 1400; display: flex;
  align-items: center; justify-content: center; padding: 20px;
  background: rgba(7, 17, 32, .55);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  opacity: 0; visibility: hidden; transition: opacity .3s ease, visibility .3s ease;
}
.wx-modal.show { opacity: 1; visibility: visible; }
.wx-card {
  position: relative; width: min(370px, 100%); background: #fff; border-radius: 24px;
  padding: 32px 30px 28px; text-align: center; box-shadow: var(--shadow-lg);
  transform: translateY(18px) scale(.96); transition: transform .35s cubic-bezier(.2, .9, .3, 1.15);
}
.wx-modal.show .wx-card { transform: none; }
.wx-close {
  position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center; color: var(--muted); background: var(--bg-soft);
  transition: .25s;
}
.wx-close:hover { color: var(--ink); background: #e8effb; transform: rotate(90deg); }
.wx-head { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 20px; }
.wx-logo {
  width: 46px; height: 46px; flex: 0 0 auto; border-radius: 14px;
  background: #07c160; color: #fff; display: grid; place-items: center;
  box-shadow: 0 8px 18px rgba(7, 193, 96, .32);
}
.wx-head div { text-align: left; }
.wx-head b { display: block; font-size: 17px; color: var(--ink); }
.wx-head div span { font-size: 12.5px; color: var(--muted); }
.wx-qr {
  width: 210px; height: 210px; margin: 0 auto; background: #fff;
  border: 1px solid var(--line); border-radius: 16px; padding: 10px;
  display: flex; align-items: center; justify-content: center;
}
.wx-qr img { width: 100%; height: 100%; object-fit: contain; border-radius: 8px; }
.wx-qr-alt { flex-direction: column; align-items: center; justify-content: center; gap: 10px; color: var(--muted); font-size: 12.5px; line-height: 1.8; }
.wx-qr-alt b { color: var(--ink-2); }
.wx-tip { margin-top: 16px; font-size: 13px; color: var(--muted); }
body.modal-open { overflow: hidden; }

@media (max-width: 640px) {
  .side-bar { right: 12px; bottom: 30px; top: auto; transform: none; gap: 12px; }
  .side-consult,
  .side-wechat {
    min-width: 0; width: 54px; height: 54px; padding: 0; border-radius: 50%;
    justify-content: center;
  }
  .side-consult:hover, .side-wechat:hover { transform: translateY(-3px); }
  .side-consult .sc-ico { animation: none; background: transparent; box-shadow: none; }
  .side-wechat .sc-ico { box-shadow: none; }
  .side-consult .sc-ico svg { width: 24px; height: 24px; }
  .sc-lab, .side-consult .sc-tel, .side-wechat .sc-note { display: none; }
}

/* 中屏（1081–1439px）导航紧凑化，避免加入联系组后溢出换行 */
@media (min-width: 1081px) and (max-width: 1439px) {
  .site-header .logo-txt { font-size: 17px; }
  .site-header .logo-mark { width: 42px; height: 42px; }
  .nav-menu > ul > li > a { padding: 8px 11px; font-size: 13.5px; }
  .site-header .logo-txt small { display: none; }
  .nav-contact { gap: 12px; margin-left: 6px; padding-left: 14px; }
  .nav-contact .nc-item { font-size: 13px; gap: 6px; }
  .nav-contact .nc-item svg { width: 15px; height: 15px; }
}

/* 大屏（1440–1639px）轻度收紧，为邮箱与电话留足空间 */
@media (min-width: 1440px) and (max-width: 1639px) {
  .site-header .logo-txt small { letter-spacing: .08em; }
  .nav-menu > ul > li > a { padding: 10px 13px; }
  .nav-contact { gap: 14px; padding-left: 15px; }
  .nav-contact .nc-item { font-size: 14px; gap: 6px; }
}

/* ============================================================
   字体版权说明（避免字体侵权）：
   全站统一使用操作系统自带字体栈（PingFang SC / Hiragino Sans GB /
   微软雅黑 / Arial / 宋体），未引入任何外部或商用字体文件，
   不涉及字体版权问题；如需品牌展示字体，请使用已获授权字体。
   ============================================================ */