/* ==========================================================================
   铭望互联 - 全站样式表 v6
   品牌：铭望®互联 | 陕西铭望信息技术有限公司 | www.dnsren.com
   配色基准：商务亮蓝色系（#003884 → #0066ff → #0095ff → #00b4ff）
   设计理念：Refined Professional B2B · 精致商务 · 专业大气 · 沉稳可靠
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root{
  /* —— 品牌主色：专业商务亮蓝色系（保持原调色板） —— */
  --c-blue-950:#00123a;
  --c-blue-900:#002057;
  --c-blue-800:#003280;
  --c-blue-700:#0047ab;
  --c-blue-600:#0059d6;
  --c-blue-500:#006eff;
  --c-blue-400:#2a87ff;
  --c-blue-300:#55aeff;
  --c-blue-200:#89cbff;
  --c-blue-100:#bfe0ff;
  --c-sky-500:#009dff;
  --c-sky-400:#00c2ff;
  --c-sky-300:#6ad7ff;
  --c-azure-500:#0cf;
  --c-cyan-400:#22e0ee;
  --c-cyan-300:#72edf9;
  --c-brand-1:#003280;
  --c-brand-2:#006eff;
  --c-brand-3:#009dff;
  --c-brand-4:#00c2ff;

  /* 中性文字色 */
  --c-ink:#07111f;
  --c-ink-2:#182337;
  --c-ink-3:#334155;
  --c-ink-4:#8094ae;
  --c-line:#dbe5f1;
  --c-line-2:#c4d3e8;
  --c-line-3:#eef3fa;

  /* 背景色体系 */
  --c-bg:#ffffff;
  --c-bg-soft:#f6f9fd;
  --c-bg-tint:#eef5ff;
  --c-bg-blue:#f2f7ff;
  --c-bg-deep:#00123a;

  /* 品牌渐变 */
  --grad-brand:135deg,#003280 0%,#0047ab 20%,#006eff 45%,#009dff 75%,#00c2ff 100%;
  --grad-brand-2:90deg,#003280,#0047ab,#006eff,#009dff,#00c2ff;
  --grad-nav:180deg,rgba(0,18,58,.96) 0%,rgba(0,32,87,.93) 100%;
  --grad-nav-scrolled:180deg,rgba(0,18,58,.99) 0%,rgba(0,32,87,.97) 100%;
  --grad-hero:135deg,#00123a 0%,#002057 18%,#003280 40%,#0047ab 60%,#006eff 80%,#009dff 92%,#00c2ff 100%;
  --grad-page:135deg,#002057 0%,#003280 26%,#006eff 60%,#009dff 100%;
  --grad-cta:135deg,#00123a 0%,#002057 20%,#003280 45%,#006eff 72%,#009dff 100%;
  --grad-stat:135deg,#003280 0%,#0047ab 25%,#006eff 55%,#009dff 80%,#00c2ff 100%;
  --grad-card:180deg,rgba(0,110,255,.09) 0%,rgba(0,194,255,.05) 100%;
  --grad-accent:135deg,#22e0ee 0%,#006eff 52%,#00c2ff 100%;
  --grad-text:90deg,#002057 0%,#003280 18%,#0047ab 40%,#006eff 62%,#009dff 82%,#00c2ff 100%;
  --grad-text-light:90deg,#89cbff 0%,#bfe0ff 35%,#6ad7ff 68%,#00c2ff 100%;
  --grad-text-nav:90deg,#55aeff 0%,#89cbff 50%,#00c2ff 100%;

  /* 圆角 */
  --radius:16px;
  --radius-sm:12px;
  --radius-lg:24px;
  --radius-xl:30px;

  /* 精细阴影层级 */
  --shadow-xs:0 1px 2px rgba(7,17,31,.04);
  --shadow-sm:0 2px 8px rgba(7,17,31,.05),0 1px 2px rgba(7,17,31,.03);
  --shadow:0 8px 24px rgba(0,50,128,.07),0 2px 8px rgba(7,17,31,.04);
  --shadow-md:0 16px 44px rgba(0,110,255,.12),0 4px 14px rgba(7,17,31,.05);
  --shadow-lg:0 28px 68px rgba(0,110,255,.16),0 10px 28px rgba(7,17,31,.06);
  --shadow-xl:0 40px 98px rgba(0,50,128,.20),0 16px 40px rgba(7,17,31,.07);
  --shadow-brand:0 16px 44px rgba(0,110,255,.44);
  --shadow-nav:0 1px 0 rgba(255,255,255,.05) inset,0 12px 36px rgba(0,18,58,.45);
  --shadow-card-hover:0 20px 52px rgba(0,50,128,.17),0 6px 20px rgba(7,17,31,.06);

  --maxw:1280px;
  --gap:28px;
  --section-pad:88px;
  --section-pad-sm:64px;
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.88;color:var(--c-ink);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  -moz-osx-font-smoothing:grayscale;
  letter-spacing:.002em;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease,transform .18s ease}
ul,ol{list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none}
::selection{background:rgba(0,110,255,.18);color:var(--c-ink)}

/* ---------- 布局工具 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 48px}
.section{padding:var(--section-pad) 0}
.section-sm{padding:var(--section-pad-sm) 0}
.section-tint{
  background:
    radial-gradient(960px 200px at 50% 0%,rgba(0,110,255,.055),transparent 70%),
    linear-gradient(180deg,#f8fbff 0%,#ffffff 100%);
  position:relative;
}
.section-tint::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,110,255,.14),transparent);
}
.section-tint-2{
  background:
    radial-gradient(1060px 200px at 0% 0%,rgba(0,157,255,.06),transparent 70%),
    radial-gradient(960px 180px at 100% 100%,rgba(0,110,255,.06),transparent 70%),
    linear-gradient(180deg,#fafcff 0%,#f1f5fc 100%);
  position:relative;
}
.section-tint-2::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,110,255,.14),transparent);
}
.sec-head{text-align:center;max-width:820px;margin:0 auto 44px;position:relative}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:.22em;color:#003280;font-weight:700;text-transform:uppercase;
  background:linear-gradient(135deg,rgba(0,50,128,.08),rgba(0,194,255,.05));
  padding:8px 20px;border-radius:999px;margin-bottom:16px;
  border:1px solid rgba(0,110,255,.20);
  position:relative;overflow:hidden;
}
.sec-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:linear-gradient(var(--grad-brand));box-shadow:0 0 10px rgba(0,110,255,.55)}
.sec-eyebrow::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.38),transparent);transform:translateX(-100%);animation:eyebrowShine 4.5s ease-in-out infinite}
@keyframes eyebrowShine{50%{transform:translateX(100%)}100%{transform:translateX(100%)}}
.sec-title{font-size:clamp(28px,3.4vw,44px);line-height:1.22;font-weight:800;color:var(--c-ink);letter-spacing:-.030em}
.sec-title .text-grad{position:relative}
.sec-desc{margin-top:16px;font-size:16.5px;color:var(--c-ink-2);line-height:1.95;max-width:720px;margin-left:auto;margin-right:auto}
.text-grad{
  background:linear-gradient(var(--grad-text));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  position:relative;
}

/* ============================================================
   导航栏
   ============================================================ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:transparent;
  transition:background .32s ease,box-shadow .32s ease,backdrop-filter .32s ease,border-color .32s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:linear-gradient(var(--grad-nav-scrolled));
  backdrop-filter:blur(22px) saturate(1.5);
  -webkit-backdrop-filter:blur(22px) saturate(1.5);
  border-bottom:1px solid rgba(85,174,255,.18);
  box-shadow:var(--shadow-nav);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;position:relative}

/* 品牌Logo */
.brand{
  display:flex;align-items:center;gap:10px;
  position:relative;
  flex-shrink:0;
  text-decoration:none;
}
.brand .brand-icon{
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  filter:drop-shadow(0 2px 8px rgba(0,102,255,.32));
  transition:transform .32s ease,filter .32s ease;
}
.brand:hover .brand-icon{
  transform:rotate(-3deg) scale(1.04);
  filter:drop-shadow(0 4px 14px rgba(0,102,255,.44));
}
.brand .brand-text{
  display:flex;flex-direction:column;line-height:1.1;
}
.brand .brand-name{
  font-weight:900;font-size:18px;letter-spacing:.04em;
  background:linear-gradient(var(--grad-text-nav));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 2px 12px rgba(0,102,255,.28);
  filter:drop-shadow(0 1px 0 rgba(0,26,76,.9));
  position:relative;
  line-height:1.1;
}
.brand .brand-name::after{display:none}
.brand .brand-reg{
  font-size:.48em;
  vertical-align:super;
  line-height:0;
  letter-spacing:0;
  margin-left:1px;
  font-weight:700;
  background:linear-gradient(var(--grad-text-nav));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  position:relative;
  top:.12em;
}
.brand .brand-slogan{
  font-size:11px;
  letter-spacing:.10em;
  color:rgba(255,255,255,.78);
  margin-top:3px;
  font-weight:500;
  white-space:nowrap;
}
.site-header:not(.scrolled) .brand .brand-name{
  background:linear-gradient(90deg,#ffffff 0%,#c5ddff 40%,#87c5ff 75%,#5aceff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.site-header:not(.scrolled) .brand .brand-reg{
  background:linear-gradient(90deg,#ffffff 0%,#c5ddff 40%,#87c5ff 75%,#5aceff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.site-header:not(.scrolled) .brand .brand-slogan{
  color:rgba(255,255,255,.78);
}
.site-header.scrolled .brand .brand-slogan{
  color:rgba(255,255,255,.86);
}

/* 导航链接 */
.nav-links{display:flex;align-items:center;gap:3px;flex:1;justify-content:center}
.nav-links a{
  position:relative;padding:9px 16px;border-radius:10px;
  font-size:15px;color:rgba(255,255,255,.88);font-weight:500;transition:.20s cubic-bezier(.2,.7,.2,1);
  letter-spacing:.02em;
}
.nav-links a::before{
  content:"";position:absolute;inset:0;border-radius:10px;
  background:linear-gradient(135deg,rgba(0,102,255,.0),rgba(0,149,255,.0));
  transition:.20s;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-links a.active{
  color:#fff;font-weight:600;
  background:linear-gradient(135deg,rgba(0,102,255,.22),rgba(0,149,255,.18));
  box-shadow:0 0 0 1px rgba(66,165,255,.24) inset,0 4px 16px rgba(0,56,132,.18);
}
.nav-links a.active::after{
  content:"";position:absolute;left:18px;right:18px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#55aeff,#89cbff,#00c2ff);
  box-shadow:0 0 8px rgba(0,194,255,.50);
}

/* 下拉菜单 */
.nav-links .has-menu{position:relative}
.nav-links .has-menu > a{display:inline-flex;align-items:center;gap:4px}
.nav-links .has-menu .arrow{font-size:10px;opacity:.7;transition:transform .22s}
.nav-links .has-menu:hover .arrow{transform:rotate(180deg);opacity:1}

.nav-links .has-menu .submenu{
  position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(-6px);
  min-width:200px;
  background:rgba(12,22,56,.97);
  border:1px solid rgba(66,165,255,.18);
  border-radius:14px;
  padding:14px 8px;
  box-shadow:0 18px 44px rgba(0,10,255,.26),0 6px 20px rgba(0,0,0,.22);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .20s ease,transform .20s ease,visibility .20s;
  z-index:200;
}
.nav-links .has-menu:hover .submenu,
.nav-links .has-menu:focus-within .submenu{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}

.nav-links .has-menu .submenu-group{padding:4px 4px}
.nav-links .has-menu .submenu-group h4{
  font-size:11px;font-weight:600;color:rgba(255,255,255,.78);
  text-transform:uppercase;letter-spacing:.10em;
  padding:6px 12px 10px;margin:0;
  border-bottom:1px solid rgba(255,255,255,.07);
  margin-bottom:4px;
}
.nav-links .has-menu .submenu-group:first-child{margin-bottom:4px}

.nav-links .has-menu .submenu a{
  display:block;padding:9px 14px;border-radius:8px;
  font-size:14px;color:rgba(255,255,255,.88);font-weight:500;
  letter-spacing:.01em;
  text-align:left;
  white-space:nowrap;
  transition:.16s ease;
}
.nav-links .has-menu .submenu a:hover{
  color:#fff;
  background:linear-gradient(135deg,rgba(0,102,255,.22),rgba(0,180,255,.16));
  box-shadow:0 0 0 1px rgba(66,165,255,.22) inset;
  transform:translateX(2px);
}

.nav-links .has-menu .submenu-group + .submenu-group{
  border-top:1px solid rgba(255,255,255,.07);
  padding-top:10px;margin-top:4px;
}

@media (max-width:768px){
  .nav-links .has-menu{width:100%}
  .nav-links .has-menu .submenu{
    position:static;transform:none;min-width:0;
    background:rgba(0,26,76,.58);border:none;box-shadow:none;
    padding:0 8px;
    opacity:1;visibility:visible;pointer-events:auto;
    display:none;
    border-radius:0;
  }
  .nav-links .has-menu.open .submenu{display:block}
  .nav-links .has-menu .submenu a{padding:8px 12px}
  .nav-links .has-menu .submenu-group h4{display:none}
}

/* 导航CTA */
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;padding:10px 22px;border-radius:999px;
  background:linear-gradient(135deg,#003280 0%,#0047ab 22%,#006eff 50%,#009dff 80%,#00c2ff 100%);
  color:#fff;font-weight:600;font-size:14px;
  box-shadow:0 8px 22px rgba(0,110,255,.38),0 0 0 1px rgba(255,255,255,.12) inset;
  transition:.22s cubic-bezier(.2,.7,.2,1);
  position:relative;overflow:hidden;white-space:nowrap;
  margin-left:8px;
  flex-shrink:0;
}
.nav-cta::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.24),transparent);
  transform:translateX(-100%);transition:.55s;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,102,255,.48),0 0 0 1px rgba(255,255,255,.18) inset}
.nav-cta:hover::before{transform:translateX(100%)}
.nav-toggle{display:none;font-size:26px;color:rgba(255,255,255,.92);background:none;padding:6px;line-height:1}

/* 滚动状态 */
.site-header.scrolled{
  background:linear-gradient(180deg,rgba(0,26,76,.98) 0%,rgba(0,40,102,.96) 100%) !important;
  backdrop-filter:blur(18px) saturate(1.4);
  -webkit-backdrop-filter:blur(18px) saturate(1.4);
  border-bottom:1px solid rgba(66,165,255,.16);
  box-shadow:0 4px 24px rgba(0,26,76,.40);
}
.site-header.scrolled .brand .brand-name{
  color:#fff !important;
  -webkit-text-fill-color:#fff;
}
.site-header.scrolled .brand .brand-reg{
  -webkit-text-fill-color:transparent;
}
.site-header.scrolled .brand .brand-slogan{
  color:rgba(255,255,255,.82) !important;
}
.site-header.scrolled .nav-links a{
  color:rgba(255,255,255,.92) !important;
}
.site-header.scrolled .nav-links a:hover{
  color:#fff !important;
  background:rgba(255,255,255,.08);
}
.site-header.scrolled .nav-links a.active{
  color:#fff !important;
  background:linear-gradient(135deg,rgba(0,102,255,.30),rgba(0,149,255,.24));
  box-shadow:0 0 0 1px rgba(66,165,255,.30) inset,0 4px 16px rgba(0,56,132,.24);
}
.site-header.scrolled .nav-links .has-menu .submenu{
  background:rgba(8,18,50,.98);
  border-color:rgba(66,165,255,.20);
}
.site-header.scrolled .nav-cta{
  box-shadow:0 6px 18px rgba(0,102,255,.42);
}
.site-header.scrolled .nav-toggle{
  color:#fff !important;
}

/* ============================================================
   首屏Hero
   ============================================================ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(180deg,#061029 0%,#0a1a3f 48%,#050e22 100%);
  padding-top:72px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:1;
  background:
    radial-gradient(72% 58% at 88% 8%,rgba(0,194,255,.12),transparent 68%),
    radial-gradient(62% 48% at 8% 88%,rgba(0,110,255,.14),transparent 68%),
    radial-gradient(44% 38% at 50% 50%,rgba(85,174,255,.05),transparent 72%),
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:auto,auto,auto,50px 50px,50px 50px;
}
.hero::after{
  content:"";position:absolute;top:-32%;left:-52%;width:62%;height:210%;pointer-events:none;z-index:1;
  background:linear-gradient(100deg,transparent 0%,rgba(125,211,252,.06) 50%,transparent 100%);
  transform:rotate(12deg);animation:heroSweep 18s linear infinite;
}
@keyframes heroSweep{0%{left:-62%}100%{left:112%}}

.hero-inner{
  position:relative;z-index:2;
  padding:110px 0 88px;
}
.hero-text{max-width:820px}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13.5px;letter-spacing:.09em;font-weight:600;
  color:rgba(255,255,255,.92);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(137,203,255,.20);
  padding:10px 20px;border-radius:999px;margin-bottom:30px;
  box-shadow:0 0 0 1px rgba(255,255,255,.02) inset,0 6px 22px rgba(0,18,58,.28);
  backdrop-filter:blur(6px);
}
.hero-tag .dot{
  width:8px;height:8px;border-radius:50%;
  background:linear-gradient(135deg,#00c2ff,#009dff);
  box-shadow:0 0 8px rgba(0,194,255,.60);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.3);opacity:.8}}
.hero h1{
  font-size:clamp(36px,5.6vw,68px);
  line-height:1.12;font-weight:800;letter-spacing:-.035em;
  color:#fff;margin-bottom:26px;
  text-shadow:0 4px 36px rgba(0,40,87,.50),0 2px 10px rgba(0,0,0,.22);
}
.hero p.lead{
  font-size:18px;line-height:1.98;color:rgba(255,255,255,.90);
  max-width:640px;margin-bottom:40px;
}

/* 按钮 */
.hero-cta{display:flex;gap:18px;margin-bottom:60px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 32px;border-radius:999px;font-weight:600;font-size:15.5px;transition:.24s cubic-bezier(.2,.7,.2,1);position:relative;white-space:nowrap;letter-spacing:.01em}
.btn-primary{
  background:linear-gradient(135deg,#0047ab 0%,#006eff 28%,#009dff 62%,#00c2ff 100%);
  color:#fff;
  box-shadow:0 12px 32px rgba(0,110,255,.42),0 0 0 1px rgba(255,255,255,.12) inset;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 44px rgba(0,110,255,.52),0 0 0 1px rgba(255,255,255,.16) inset}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.30);backdrop-filter:blur(5px)}
.btn-ghost:hover{background:rgba(255,255,255,.07);border-color:rgba(137,203,255,.52);transform:translateY(-2px)}

/* 统计行 */
.hero-stats-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  padding-top:48px;border-top:1px solid rgba(137,203,255,.10);
}
.sr-item{padding-right:28px}
.sr-item:not(:last-child){border-right:1px solid rgba(137,203,255,.10);padding-right:32px;margin-right:32px}
.sr-num{
  font-size:clamp(30px,3.6vw,46px);font-weight:800;line-height:1.08;letter-spacing:-.022em;
  background:linear-gradient(135deg,#89cbff 0%,#55aeff 28%,#009dff 56%,#00c2ff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:10px;
  filter:drop-shadow(0 2px 12px rgba(0,157,255,.28));
}
.sr-label{font-size:14.5px;color:rgba(255,255,255,.86);letter-spacing:.015em;font-weight:500}

@media(max-width:768px){
  .hero{padding-top:64px}
  .hero-inner{padding:50px 0 40px}
  .hero-text{max-width:100%}
  .hero h1{font-size:30px}
  .hero p.lead{font-size:15px;margin-bottom:28px}
  .hero-cta{flex-wrap:wrap;margin-bottom:36px}
  .hero-stats-row{grid-template-columns:repeat(2,1fr);gap:24px}
  .sr-item{padding-right:0 !important;border-right:none !important;margin-right:0 !important}
}

/* ============================================================
   通用卡片网格
   ============================================================ */
.grid{display:grid;gap:var(--gap)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-6{grid-template-columns:repeat(6,1fr)}

.card{
  position:relative;overflow:hidden;background:var(--c-bg);
  border:1px solid var(--c-line);border-radius:var(--radius);padding:36px 34px;
  box-shadow:var(--shadow-sm);transition:.28s cubic-bezier(.2,.7,.2,1);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:0;
  background:linear-gradient(135deg,rgba(0,56,132,.07),rgba(0,180,255,.04));
  transition:height .32s ease;pointer-events:none;
}
.card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:0;
  background:linear-gradient(90deg,#003280,#0047ab,#006eff,#009dff,#00c2ff);
  transition:height .28s ease;opacity:.85;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(0,110,255,.30)}
.card:hover::before{height:55%}
.card:hover::after{height:3px}
.card .ic{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:25px;color:#fff;
  background:linear-gradient(135deg,#003280,#0047ab 28%,#006eff 58%,#009dff 86%);
  box-shadow:0 10px 24px rgba(0,110,255,.32),0 0 0 1px rgba(255,255,255,.42) inset;
  margin-bottom:22px;transition:.28s cubic-bezier(.2,.7,.2,1);
  position:relative;
}
.card:hover .ic{transform:scale(1.05) rotate(-2deg) translateY(-1px);box-shadow:0 14px 32px rgba(0,110,255,.44)}
.card h3{font-size:19px;font-weight:700;margin-bottom:11px;color:var(--c-ink);letter-spacing:-.014em}
.card p{font-size:15px;color:var(--c-ink-2);line-height:1.9}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:#003280;transition:.20s}
.card .more:hover{gap:12px;color:#0047ab}

/* 步骤卡片 */
.step-card{position:relative;padding:38px 36px;}
.step-card .step-num{
  font-size:12px;font-weight:700;letter-spacing:.08em;color:#fff;
  background:linear-gradient(135deg,#003280,#0047ab,#006eff,#009dff,#00c2ff);
  display:inline-block;padding:8px 17px;border-radius:11px;margin-bottom:18px;
  box-shadow:0 5px 14px rgba(0,110,255,.32);
  position:relative;
}
.step-card h3{font-size:19.5px;font-weight:700;margin-bottom:11px;color:var(--c-ink);letter-spacing:-.014em}
.step-card p{font-size:15px;color:var(--c-ink-2);line-height:1.92}
.step-card .kw-tag{
  display:inline-block;margin-top:18px;padding:7px 15px;
  font-size:13px;font-weight:700;color:#003280;
  background:linear-gradient(135deg,rgba(0,110,255,.09),rgba(0,194,255,.07));
  border:1px solid rgba(0,110,255,.20);
  border-radius:999px;letter-spacing:.03em;
}
.step-card:hover .kw-tag{
  background:linear-gradient(135deg,rgba(0,110,255,.14),rgba(0,194,255,.11));
  border-color:rgba(0,110,255,.32);
}

/* ============================================================
   对比板块：传统搜索 vs AI搜索
   ============================================================ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare .col{background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--radius);padding:40px 36px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:.28s cubic-bezier(.2,.7,.2,1)}
.compare .col::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--c-ink-3),var(--c-line-2))}
.compare .col.ai::before{background:linear-gradient(90deg,#003280,#0047ab,#006eff,#009dff,#00c2ff);box-shadow:0 2px 14px rgba(0,110,255,.28)}
.compare .col:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.compare .col h3{font-size:21px;font-weight:700;margin-bottom:18px;display:flex;align-items:center;gap:12px}
.compare .col.trad h3{color:var(--c-ink-2)}
.compare .col.ai h3{color:#003280}

/* 传统：CSS圆形（边框+背景） */
.compare .col.trad h3::before{
  content:"";width:36px;height:36px;border-radius:50%;
  background:var(--c-bg-soft);
  border:1.5px solid var(--c-ink-3);
  box-shadow:0 2px 6px rgba(15,23,42,.04);
  flex-shrink:0;
}

/* AI：CSS方形（渐变背景） */
.compare .col.ai h3::before{
  content:"";width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,#003280 0%,#0047ab 40%,#009dff 100%);
  box-shadow:0 4px 12px rgba(0,110,255,.28),0 0 0 1px rgba(255,255,255,.4) inset;
  flex-shrink:0;
}

.compare .col ul li{padding:12px 0 12px 32px;position:relative;font-size:15px;color:var(--c-ink-2);border-bottom:1px dashed var(--c-line);line-height:1.76}
.compare .col ul li:last-child{border-bottom:none}
.compare .col.trad ul li::before{content:"";position:absolute;left:0;top:18px;width:8px;height:8px;border-radius:50%;background:var(--c-ink-3);box-shadow:0 0 0 3px var(--c-bg-soft)}
.compare .col.ai ul li::before{content:"";position:absolute;left:0;top:17px;width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,#003280,#00c2ff);box-shadow:0 0 12px rgba(0,194,255,.48)}

/* 4项特性 */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px}
.feature{text-align:center;padding:38px 32px;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:.28s cubic-bezier(.2,.7,.2,1);position:relative;overflow:hidden}
.feature::before{
  content:"";position:absolute;inset:0;opacity:0;transition:.32s;pointer-events:none;
  background:radial-gradient(circle at 50% 0%,rgba(0,110,255,.09),transparent 65%);
}
.feature::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.82);width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(0,157,255,.10),transparent 70%);opacity:0;transition:.32s;pointer-events:none}
.feature:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(0,110,255,.28)}
.feature:hover::before,.feature:hover::after{opacity:1;transform:translate(-50%,-50%) scale(1)}
.feature .fi{
  width:56px;height:56px;margin:0 auto 20px;border-radius:14px;display:grid;place-items:center;font-size:27px;color:#fff;
  background:linear-gradient(135deg,#003280 0%,#0047ab 25%,#006eff 55%,#009dff 82%,#00c2ff 100%);
  box-shadow:0 12px 28px rgba(0,110,255,.32),0 0 0 1px rgba(255,255,255,.46) inset;
  position:relative;transition:.28s;
}
.feature:hover .fi{transform:scale(1.06) translateY(-1px);box-shadow:0 16px 36px rgba(0,110,255,.44)}
.feature h4{font-size:17px;font-weight:700;margin-bottom:9px;color:var(--c-ink);letter-spacing:-.010em}
.feature p{font-size:14.5px;color:var(--c-ink-2);line-height:1.82}

/* ============================================================
   时间轴：徽章卡片 + S型曲线（卡片串在曲线上，绝不遮挡文字）
   3排横向，第2排反向形成S型走向；背景SVG曲线贯穿3排
   ============================================================ */
.tl-s{position:relative;max-width:1120px;margin:0 auto;padding:8px 0}
.tl-s-row{
  display:flex;justify-content:space-between;align-items:stretch;
  position:relative;z-index:1;gap:16px;margin-bottom:28px;
}
/* 第2排反向（形成S型蛇形走向） */
.tl-s-reverse{flex-direction:row-reverse}
/* S型曲线：贯穿3排的连续装饰曲线，卡片串在曲线上 */
.tl-curve{
  position:absolute;top:0;left:0;width:100%;height:100%;
  z-index:0;pointer-events:none;overflow:visible;
}
.tl-s-item{
  flex:1 1 0;cursor:pointer;outline:none;position:relative;
}
.tl-s-card{
  position:relative;
  background:linear-gradient(180deg,#fff 0%,#f7fbff 100%);
  border:1px solid var(--c-line);
  border-radius:14px;padding:16px 16px 14px;
  box-shadow:0 2px 8px rgba(7,17,31,.05),0 1px 2px rgba(7,17,31,.03),0 1px 0 rgba(255,255,255,.9) inset;
  transition:.35s cubic-bezier(.2,.7,.2,1);height:100%;
  display:flex;flex-direction:column;overflow:hidden;
}
/* 卡片顶部渐变条（hover/激活时发光显示） */
.tl-s-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,#003280,#006eff,#009dff,#00c2ff);
  opacity:0;transition:opacity .35s;
  box-shadow:0 0 10px rgba(0,110,255,.5);
}
/* 节点连接圆点：标识卡片串在曲线上的位置 */
.tl-s-card::after{
  content:"";position:absolute;top:-6px;left:50%;transform:translateX(-50%);
  width:10px;height:10px;border-radius:50%;
  background:#fff;border:2.5px solid #009dff;
  box-shadow:0 0 0 3px rgba(0,157,255,.12),0 0 10px rgba(0,194,255,.55);
  z-index:2;transition:.35s;
}
.tl-s-yr{
  display:inline-block;align-self:flex-start;
  font-size:13px;font-weight:800;letter-spacing:.05em;
  padding:5px 14px;border-radius:999px;margin-bottom:12px;
  background:linear-gradient(135deg,#003280,#0047ab,#006eff,#009dff);
  color:#fff;
  box-shadow:0 3px 10px rgba(0,110,255,.35),0 1px 0 rgba(255,255,255,.25) inset;
  transition:.35s;
}
.tl-s-card h4{font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:6px;letter-spacing:-.01em;line-height:1.4}
.tl-s-card p{font-size:13px;color:var(--c-ink-2);line-height:1.62;flex:1}

/* hover：上浮+品牌色光晕+圆点放大+徽章微缩放 */
.tl-s-item:not(.tl-active):hover .tl-s-card{
  transform:translateY(-6px);
  box-shadow:0 22px 48px rgba(0,110,255,.18),0 6px 18px rgba(7,17,31,.08);
  border-color:rgba(0,110,255,.35);
}
.tl-s-item:not(.tl-active):hover .tl-s-card::before{opacity:.75}
.tl-s-item:not(.tl-active):hover .tl-s-card::after{
  transform:translateX(-50%) scale(1.15);
  box-shadow:0 0 0 4px rgba(0,157,255,.18),0 0 16px rgba(0,194,255,.8);
}
.tl-s-item:not(.tl-active):hover .tl-s-yr{
  transform:scale(1.05);
  box-shadow:0 6px 16px rgba(0,110,255,.5),0 1px 0 rgba(255,255,255,.25) inset;
}
.tl-s-item:focus-visible .tl-s-card{
  box-shadow:0 0 0 3px rgba(0,110,255,.20),var(--shadow-sm);
  border-color:rgba(0,110,255,.55);
}

/* 激活态：渐变背景+顶部条全显+圆点脉冲 */
.tl-s-item.tl-active .tl-s-card{
  border-color:rgba(0,110,255,.45);
  background:linear-gradient(180deg,rgba(0,110,255,.07),rgba(0,194,255,.02) 55%,#fff);
  box-shadow:0 16px 36px rgba(0,50,128,.18),0 4px 12px rgba(0,110,255,.16);
  transform:translateY(-6px);
}
.tl-s-item.tl-active .tl-s-card::before{opacity:1}
.tl-s-item.tl-active .tl-s-card::after{
  background:linear-gradient(135deg,#006eff,#00c2ff);
  border-color:#006eff;
  animation:tlNodePulse 1.8s ease-in-out infinite;
}
.tl-s-item.tl-active .tl-s-yr{
  background:linear-gradient(135deg,#003280,#0047ab,#006eff,#009dff,#00c2ff);
  box-shadow:0 5px 14px rgba(0,110,255,.5),0 1px 0 rgba(255,255,255,.25) inset;
}
.tl-s-item.tl-active .tl-s-card h4{color:#003280}
@keyframes tlNodePulse{
  0%,100%{box-shadow:0 0 0 3px rgba(0,157,255,.15),0 0 10px rgba(0,194,255,.55)}
  50%{box-shadow:0 0 0 6px rgba(0,157,255,.25),0 0 18px rgba(0,194,255,.95)}
}

/* 曲线淡入：容器进入视口时触发 */
.tl-curve{opacity:0;transition:opacity 1s ease-out .2s}
.tl-s.tl-play .tl-curve{opacity:1}
/* 入场动画：卡片上浮+微缩放，排内阶梯延迟 */
.tl-s-item.tl-enter .tl-s-card{opacity:0;transform:translateY(24px) scale(.96)}
.tl-s-item.tl-in .tl-s-card{animation:tlCardIn .6s cubic-bezier(.2,.7,.2,1) both;animation-delay:var(--tl-d,0s)}
.tl-s-row .tl-s-item:nth-child(1){--tl-d:0s}
.tl-s-row .tl-s-item:nth-child(2){--tl-d:.08s}
.tl-s-row .tl-s-item:nth-child(3){--tl-d:.16s}
.tl-s-row .tl-s-item:nth-child(4){--tl-d:.24s}
@keyframes tlCardIn{from{opacity:0;transform:translateY(24px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}

/* 动效降级 */
@media (prefers-reduced-motion:reduce){
  .tl-s-item.tl-enter .tl-s-card{opacity:1!important;transform:none!important;animation:none!important}
  .tl-curve{opacity:1!important;transition:none!important}
  .tl-s-item.tl-active .tl-s-card::after{animation:none!important}
}

/* 响应式 */
@media (max-width:960px){
  .tl-s{max-width:100%}
  .tl-s-row{gap:10px;margin-bottom:22px}
  .tl-s-card{padding:13px 13px 11px}
  .tl-s-card h4{font-size:14px}
  .tl-s-card p{font-size:12px;line-height:1.55}
  .tl-s-yr{font-size:12px;padding:3px 10px;margin-bottom:8px}
}
@media (max-width:768px){
  .tl-s-row{flex-direction:column;gap:12px;margin-bottom:16px}
  .tl-s-reverse{flex-direction:column}
  .tl-s-row::after,.tl-s-row .tl-s-item::after,.tl-s-card::after,.tl-curve{display:none}
  .tl-s-card{padding:14px 16px}
  .tl-s-card h4{font-size:15px}
  .tl-s-card p{font-size:13px}
}

/* ============================================================
   案例板块
   ============================================================ */
.case-tabs{display:flex;justify-content:center;flex-wrap:wrap;gap:11px;margin-bottom:36px}
.case-tabs button{
  padding:10px 24px;border-radius:999px;border:1px solid var(--c-line-2);
  font-size:14px;color:var(--c-ink-2);background:#fff;transition:.22s;font-weight:500;
  cursor:pointer;
}
.case-tabs button:hover{color:#003280;border-color:rgba(0,110,255,.36);background:var(--c-bg-soft)}
.case-tabs button.active{background:linear-gradient(135deg,#003280 0%,#0047ab 24%,#006eff 50%,#009dff 80%,#00c2ff 100%);color:#fff;border-color:transparent;box-shadow:0 8px 22px rgba(0,110,255,.34);font-weight:600}
.case-card{background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--radius);padding:36px 34px;box-shadow:var(--shadow-sm);transition:.28s cubic-bezier(.2,.7,.2,1);position:relative;overflow:hidden}
.case-card::before{content:"";position:absolute;inset:0;opacity:0;transition:.32s;background:linear-gradient(135deg,rgba(0,110,255,.06),rgba(0,194,255,.07))}
.case-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:0;background:linear-gradient(90deg,#003280,#0047ab,#006eff,#00c2ff);transition:.28s;opacity:.85}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover);border-color:rgba(0,110,255,.30)}
.case-card:hover::before{opacity:1}
.case-card:hover::after{height:3px}
.case-card .tag{display:inline-block;font-size:12.5px;font-weight:600;color:#fff;background:linear-gradient(135deg,#003280,#0047ab,#006eff);padding:6px 16px;border-radius:999px;margin-bottom:18px;box-shadow:0 4px 12px rgba(0,50,128,.26)}
.case-card h3{font-size:18.5px;font-weight:700;margin-bottom:11px;color:var(--c-ink);letter-spacing:-.014em}
.case-card p{font-size:15px;color:var(--c-ink-2);line-height:1.88}
.case-card .meta{margin-top:18px;font-size:13px;color:var(--c-ink-2);display:flex;align-items:center;gap:6px;padding-top:16px;border-top:1px dashed var(--c-line)}

/* ============================================================
   创始人
   ============================================================ */
.expert{display:grid;grid-template-columns:.72fr 1.28fr;gap:56px;align-items:center}
.expert .avatar{
  width:100%;aspect-ratio:1/1;border-radius:var(--radius-lg);
  background:
    radial-gradient(circle at 32% 22%,rgba(0,194,255,.24),transparent 60%),
    radial-gradient(circle at 78% 82%,rgba(0,110,255,.20),transparent 60%),
    linear-gradient(135deg,#eef5ff,#f2f7ff);
  display:grid;place-items:center;font-size:74px;color:#003280;
  box-shadow:var(--shadow-lg),0 0 0 1px var(--c-line);
  font-weight:900;position:relative;overflow:hidden;
  letter-spacing:-.03em;
}
.expert .avatar::after{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 80% 15%,rgba(255,255,255,.5),transparent 35%),
  radial-gradient(circle at 8% 92%,rgba(0,110,255,.16),transparent 55%);
pointer-events:none}
.expert h3{font-size:31px;font-weight:800;margin-bottom:8px;color:var(--c-ink);letter-spacing:-.020em}
.expert .role{color:#003280;font-weight:600;margin-bottom:17px;font-size:15.5px}
.expert p{font-size:16.5px;color:var(--c-ink-2);line-height:1.96}
.expert .tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.expert .tags span{font-size:13px;color:#003280;background:linear-gradient(135deg,#f2f7ff,#f2f7ff);border:1px solid rgba(0,110,255,.20);padding:8px 16px;border-radius:999px;transition:.22s;font-weight:500}
.expert .tags span:hover{background:var(--c-bg-tint);border-color:rgba(0,110,255,.38);transform:translateY(-1px)}

/* ============================================================
   CTA Band
   ============================================================ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-xl);padding:60px 56px;color:#fff;
  background:linear-gradient(var(--grad-cta));
  box-shadow:var(--shadow-xl);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(55% 55% at 90% 10%,rgba(165,212,255,.22),transparent 70%),
    radial-gradient(45% 45% at 8% 100%,rgba(0,102,255,.32),transparent 70%),
    radial-gradient(35% 35% at 50% 50%,rgba(34,211,238,.06),transparent 70%),
    linear-gradient(rgba(255,255,255,.024) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.024) 1px,transparent 1px);
  background-size:auto,auto,auto,42px 42px,42px 42px;
}
.cta-band::after{
  content:"";position:absolute;inset:auto -30% -45% auto;width:80%;height:240%;
  background:linear-gradient(110deg,transparent 0%,rgba(200,230,255,.08) 50%,transparent 100%);
  transform:rotate(10deg);animation:heroSweep 22s linear infinite;
}
.cta-band .inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.8vw,33px);font-weight:800;line-height:1.32;letter-spacing:-.014em}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.90);font-size:15.5px;max-width:560px;line-height:1.88}
.cta-band .btn-primary{background:linear-gradient(135deg,#0047ab 0%,#006eff 28%,#009dff 62%,#00c2ff 100%);color:#fff;box-shadow:0 10px 28px rgba(0,110,255,.36),0 0 0 1px rgba(255,255,255,.12) inset}
.cta-band .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(0,110,255,.48),0 0 0 1px rgba(255,255,255,.16) inset}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.28);background:transparent}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.48)}

/* ============================================================
   FAQ：深色手风琴
   ============================================================ */
.faq-section{
  background:linear-gradient(180deg,#f5f8ff 0%,#eaf1fb 100%);
  position:relative;
}
.faq-section::before{
  content:"";position:absolute;top:0;left:0;right:0;height:80px;
  background:linear-gradient(180deg,rgba(5,14,34,.04),transparent);
  pointer-events:none;
}
.faq-section .sec-title{color:#0a1a3f}
.faq-section .sec-desc{color:#3b5078}
.faq-accordion{
  max-width:none;margin:0 auto;
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.faq-item{
  background:#fff;
  border:1px solid #d8e3f3;
  border-radius:14px;
  box-shadow:0 2px 8px rgba(10,26,63,.04);
  overflow:hidden;
  transition:box-shadow .3s ease,border-color .3s ease,transform .3s ease;
}
.faq-item:hover{
  border-color:#b8cdee;
  box-shadow:0 4px 16px rgba(10,26,63,.07);
}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:20px 24px 20px 20px;
  display:flex;align-items:center;gap:0;
  font-size:15px;font-weight:600;
  transition:background .25s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(10,26,63,.015)}
.faq-num{
  flex:none;width:44px;
  font-size:19px;font-weight:800;
  color:transparent;
  background:linear-gradient(135deg,#003280,#006eff,#009dff);
  -webkit-background-clip:text;background-clip:text;
  letter-spacing:-.02em;
  padding-right:14px;margin-right:14px;
  border-right:1px solid #d8e3f3;
  transition:border-color .3s ease;
  text-align:center;
}
.faq-item summary .q{
  flex:1;color:#0a1a3f;line-height:1.56;font-size:14.5px;
}
.faq-item summary .icon{
  flex:none;width:28px;height:28px;border-radius:50%;
  position:relative;transition:transform .3s ease,background .3s ease;
  background:#eef3fa;
}
.faq-item summary .icon::before,
.faq-item summary .icon::after{
  content:"";position:absolute;background:#003280;
  transition:transform .3s ease,background .3s ease;
}
.faq-item summary .icon::before{
  left:50%;top:50%;width:12px;height:2px;
  transform:translate(-50%,-50%);
}
.faq-item summary .icon::after{
  left:50%;top:50%;width:2px;height:12px;
  transform:translate(-50%,-50%);
}
.faq-item[open]{
  border-color:#006eff;
  box-shadow:0 8px 28px rgba(0,110,255,.12),0 2px 6px rgba(0,110,255,.06);
}
.faq-item[open] summary{
  background:linear-gradient(135deg,rgba(0,110,255,.04),rgba(0,194,255,.02));
}
.faq-item[open] .faq-num{
  border-color:#b8d4ff;
  background:linear-gradient(135deg,#0047ab,#006eff,#009dff);
  -webkit-background-clip:text;background-clip:text;
}
.faq-item[open] summary .icon{
  background:linear-gradient(135deg,#003280,#006eff);
}
.faq-item[open] summary .icon::before,
.faq-item[open] summary .icon::after{
  background:#fff;
}
.faq-item[open] summary .icon::after{
  transform:translate(-50%,-50%) rotate(90deg);
}
.faq-item .a{
  padding:4px 24px 24px 78px;
  font-size:14.5px;color:#3b5078;line-height:1.88;
  animation:faqSlide .35s ease;
}
@keyframes faqSlide{
  from{opacity:0;transform:translateY(-4px)}
  to{opacity:1;transform:translateY(0)}
}
@media(max-width:768px){
  .faq-accordion{grid-template-columns:1fr;gap:12px}
  .faq-item summary{padding:18px 20px}
  .faq-num{width:38px;font-size:17px;padding-right:10px;margin-right:10px}
  .faq-item .a{padding:4px 20px 20px 66px}
}

/* ============================================================
   落地页通用Banner
   ============================================================ */
.page-hero{position:relative;overflow:hidden;color:#fff;background:linear-gradient(180deg,#061029 0%,#0a1a3f 48%,#050e22 100%);padding-top:72px}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:1;
  background:
    radial-gradient(72% 58% at 88% 8%,rgba(0,194,255,.12),transparent 68%),
    radial-gradient(62% 48% at 8% 88%,rgba(0,110,255,.14),transparent 68%),
    radial-gradient(44% 38% at 50% 50%,rgba(85,174,255,.05),transparent 72%),
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:auto,auto,auto,50px 50px,50px 50px;
}
.page-hero::after{
  content:"";position:absolute;top:-32%;left:-52%;width:62%;height:210%;pointer-events:none;z-index:1;
  background:linear-gradient(100deg,transparent 0%,rgba(125,211,252,.06) 50%,transparent 100%);
  transform:rotate(12deg);animation:heroSweep 18s linear infinite;
}
.page-hero .inner{position:relative;z-index:2;padding:96px 0 84px;max-width:820px}
.breadcrumb{font-size:13.5px;color:rgba(255,255,255,.82);margin-bottom:22px;letter-spacing:.02em}
.breadcrumb a{color:rgba(255,255,255,.90)}
.breadcrumb a:hover{color:#fff}
.breadcrumb span{margin:0 8px;opacity:.68}
.page-hero h1{font-size:clamp(32px,4.4vw,56px);font-weight:800;line-height:1.16;letter-spacing:-.032em;color:#fff;margin-bottom:22px;text-shadow:0 4px 36px rgba(0,40,87,.50),0 2px 10px rgba(0,0,0,.22)}
.page-hero .lead{margin-top:20px;font-size:17.5px;line-height:1.96;color:rgba(255,255,255,.90);max-width:680px}
.page-hero .hero-cta{margin-top:34px}
.page-hero .hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13.5px;letter-spacing:.09em;font-weight:600;
  color:rgba(255,255,255,.92);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(137,203,255,.20);
  padding:10px 20px;border-radius:999px;margin-bottom:26px;
  box-shadow:0 0 0 1px rgba(255,255,255,.02) inset,0 6px 22px rgba(0,18,58,.28);
  backdrop-filter:blur(6px);
}
.page-hero .hero-tag .dot{
  width:8px;height:8px;border-radius:50%;
  background:linear-gradient(135deg,#00c2ff,#009dff);
  box-shadow:0 0 8px rgba(0,194,255,.60);
  animation:pulse 2.4s ease-in-out infinite;
}

/* 服务流程 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:f}
.flow .fi{
  position:relative;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--radius);
  padding:34px 32px;box-shadow:var(--shadow-sm);transition:.28s cubic-bezier(.2,.7,.2,1);overflow:hidden;
}
.flow .fi::before{
  counter-increment:f;content:counter(f,decimal-leading-zero);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#003280,#0047ab,#006eff,#009dff,#00c2ff);
  width:42px;height:42px;border-radius:11px;margin-bottom:18px;
  box-shadow:0 7px 18px rgba(0,110,255,.34);
}
.flow .fi::after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:linear-gradient(90deg,transparent,rgba(0,194,255,.58),transparent);transform:scaleX(.16);opacity:0;transition:.32s}
.flow .fi:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(0,110,255,.30)}
.flow .fi:hover::after{transform:scaleX(1);opacity:1}
.flow .fi h4{font-size:16.5px;font-weight:700;margin-bottom:9px;color:var(--c-ink);letter-spacing:-.010em}
.flow .fi p{font-size:14.5px;color:var(--c-ink-2);line-height:1.86}

/* ============================================================
   套餐卡
   ============================================================ */
.pkg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pkg{background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--radius);padding:38px 32px;box-shadow:var(--shadow-sm);text-align:center;transition:.28s cubic-bezier(.2,.7,.2,1);position:relative;overflow:hidden}
.pkg.featured{border:2px solid #006eff;box-shadow:var(--shadow-md),0 0 0 5px rgba(0,110,255,.08);transform:translateY(-7px)}
.pkg.featured::before{content:"推荐";position:absolute;top:16px;right:-36px;transform:rotate(45deg);background:linear-gradient(135deg,#003280,#0047ab,#009dff);color:#fff;font-size:12.5px;font-weight:600;padding:6px 42px;box-shadow:0 4px 12px rgba(0,50,128,.32)}
.pkg:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.pkg.featured:hover{transform:translateY(-11px)}
.pkg .name{font-size:17.5px;font-weight:700;margin-bottom:8px;color:var(--c-ink)}
.pkg .price{font-size:30px;font-weight:800;color:#003280;margin:16px 0;letter-spacing:-.017em}
.pkg ul{margin:20px 0;text-align:left}
.pkg ul li{padding:9px 0 9px 30px;position:relative;font-size:14.5px;color:var(--c-ink-2);border-bottom:1px dashed var(--c-line)}
.pkg ul li::before{
  content:"";position:absolute;left:0;top:8px;width:20px;height:20px;border-radius:50%;
  background:linear-gradient(135deg,#003280,#0047ab,#009dff);
  box-shadow:0 4px 10px rgba(0,50,128,.28);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer{
  background:
    radial-gradient(1500px 300px at 50% 0%,rgba(0,157,255,.12),transparent 70%),
    linear-gradient(180deg,#00123a 0%,#002057 100%);
  color:rgba(255,255,255,.84);padding:54px 0 28px;margin-top:0;
  border-top:1px solid rgba(85,174,255,.12);
}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.07)}
.footer-brand .brand{color:#fff;margin-bottom:18px}
.footer-brand .brand .brand-name{
  font-size:16px;
  background:linear-gradient(90deg,#ffffff 0%,#c5ddff 40%,#87c5ff 75%,#5aceff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.footer-brand .brand .brand-slogan{display:none}
.footer-brand .brand .brand-icon svg{width:28px;height:28px}
.footer-brand p{font-size:13.5px;color:rgba(255,255,255,.82);line-height:1.92;max-width:400px}
.footer-col h4{color:#eaf0ff;font-size:15px;margin-bottom:20px;font-weight:700;position:relative;padding-bottom:12px;letter-spacing:.014em}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:34px;height:2.5px;border-radius:2px;background:linear-gradient(90deg,#006eff,#009dff,#00c2ff);box-shadow:0 0 10px rgba(0,157,255,.40)}
.footer-col ul li{padding:7px 0}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.86);transition:.20s;display:inline-block}
.footer-col ul li a:hover{color:#fff;padding-left:5px}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.86);padding:8px 0;line-height:1.78}
.footer-contact li strong{color:rgba(255,255,255,.96);font-weight:600}
.footer-bottom{padding-top:24px;font-size:13px;color:rgba(255,255,255,.80);line-height:2.08}
.footer-bottom .row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
.footer-bottom a{color:rgba(255,255,255,.86);transition:.20s}
.footer-bottom a:hover{color:#fff}
.gov-icon{width:16px;height:16px;vertical-align:-3px;margin-right:6px;filter:brightness(.94)}

/* ============================================================
   动效 & 响应式
   ============================================================ */
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes fadeInLeft{from{opacity:0;transform:translateX(-24px)}to{opacity:1;transform:none}}
@keyframes fadeInRight{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:none}}
.reveal{animation:fadeUp .65s cubic-bezier(.2,.7,.2,1) both}
.reveal-d1{animation-delay:.1s}.reveal-d2{animation-delay:.2s}.reveal-d3{animation-delay:.3s}.reveal-d4{animation-delay:.4s}.reveal-d5{animation-delay:.5s}.reveal-d6{animation-delay:.6s}.reveal-d7{animation-delay:.7s}.reveal-d8{animation-delay:.8s}
.hmFadeInLeft{animation:fadeInLeft .7s cubic-bezier(.2,.7,.2,1) both}
.hmFadeInRight{animation:fadeInRight .7s cubic-bezier(.2,.7,.2,1) both}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.reveal{animation:none}}

@media (max-width:1100px){
  .container{padding:0 24px}
  .grid-4,.feature-grid{grid-template-columns:repeat(2,1fr)}
  .grid-6{grid-template-columns:repeat(3,1fr)}
  .expert{grid-template-columns:1fr;gap:26px}
  .expert .avatar{max-width:240px;margin:0 auto;font-size:56px}
  .footer-top{grid-template-columns:1.3fr 1fr 1fr;gap:28px}
  .footer-contact{grid-column:1 / -1}
  .flow{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:768px){
  :root{--section-pad:56px;--section-pad-sm:36px;--gap:18px}
  .nav{height:60px}
  .brand .brand-slogan{display:none}
  .brand .brand-icon svg{width:28px;height:28px}
  .brand .brand-name{font-size:16px}
  .hero{padding-top:60px}
  .page-hero{padding-top:60px}
  .nav-links{
    display:none;position:absolute;top:60px;left:0;right:0;flex-direction:column;
    background:linear-gradient(180deg,#001a4c 0%,#002866 100%);
    border-top:1px solid rgba(66,165,255,.14);
    padding:14px;gap:4px;
    box-shadow:0 14px 34px rgba(0,26,76,.50);
    backdrop-filter:blur(16px);
  }
  .nav-links.open{display:flex}
  .nav-links a{width:100%}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .brand .brand-name{font-size:15px}
  .brand .brand-icon svg{width:26px;height:26px}
  .hero-inner{padding:50px 0 40px}
  .grid-2,.grid-3,.grid-4,.grid-6,.compare,.pkg-grid,.feature-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
  .section{padding:var(--section-pad) 0}
  .cta-band{padding:38px 26px;text-align:center}
  .cta-band .inner{justify-content:center;text-align:center}
  .footer-top{grid-template-columns:1fr 1fr;gap:24px}
  .footer-contact{grid-column:auto}
  .expert .avatar{font-size:48px}
}
@media (max-width:480px){
  .container{padding:0 18px}
  .flow{grid-template-columns:1fr}
  .hero h1{letter-spacing:-.022em;font-size:28px}
  .hero-stats-row{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr}
  .sec-head{margin-bottom:28px}
  .sec-title{font-size:24px}
  .cta-band{padding:32px 22px}
  .nav{height:60px}
  .hero{padding-top:60px}
}