/* ============================================================================
 *  盛航云官网 · 主样式
 *
 *  设计取向：科技感（深色底 + 品牌蓝青渐变 + 光晕 + 玻璃拟态）
 *  品牌色取自 02-聚合平台，保持视觉统一：
 *      主蓝 #1d4ed8 · 亮蓝 #3b82f6 · 青 #06b6d4 · 深蓝 #0d3383
 *
 *  目录：
 *    一、变量与重置
 *    二、排版
 *    三、按钮
 *    四、顶栏 / 页脚
 *    五、首页各区块
 *    六、内页通用
 *    七、动效
 *    八、响应式
 * ==========================================================================*/

/* ==========================================================================
 *  一、变量与重置
 * ========================================================================*/
:root{
  /* 品牌色 */
  --brand:#1d4ed8;
  --brand-2:#3b82f6;
  --brand-3:#06b6d4;
  --brand-deep:#0d3383;
  --brand-grad:linear-gradient(135deg,#1d4ed8 0%,#3b82f6 50%,#06b6d4 100%);
  --brand-grad-soft:linear-gradient(135deg,rgba(29,78,216,.10),rgba(6,182,212,.07));

  /* 浅色底（清新向：不用纯白，用带一点蓝的冷白） */
  --bg:#f7fafd;
  --bg-2:#eef4fb;
  --bg-3:#e4edf8;
  --panel:#ffffff;
  --panel-2:#f4f8fd;
  --line:#e2ebf6;
  --line-2:#cfe0f2;

  /* 文字 */
  --ink:#12203a;
  --ink-2:#40536f;
  --muted:#5f7391;
  --dim:#8496b0;

  /* 状态 */
  --ok:#00d68f;
  --warn:#ffb020;
  --danger:#ff5c5c;
  --cyan:#22d3ee;

  /* 尺寸 */
  --radius:16px;
  --radius-sm:10px;
  --radius-lg:22px;
  --wrap:1200px;
  --header-h:68px;

  /* 光晕与投影（浅色底上要轻，重了显脏） */
  --glow-blue:0 12px 40px rgba(29,78,216,.18);
  --glow-cyan:0 12px 40px rgba(6,182,212,.16);
  --shadow:0 10px 40px rgba(21,54,110,.08);
  --shadow-lg:0 24px 60px rgba(21,54,110,.14);

  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  font-size:15px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  /* 全站铺一层极淡的品牌色氛围，避免大面积纯色显平 */
  background-image:
    radial-gradient(900px 520px at 12% -6%,rgba(59,130,246,.09),transparent 62%),
    radial-gradient(760px 460px at 88% 4%,rgba(6,182,212,.08),transparent 60%);
  background-attachment:fixed;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
::selection{background:rgba(59,130,246,.22);color:var(--ink)}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-2)}
::-webkit-scrollbar-thumb{background:rgba(120,150,200,.34);border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:rgba(120,150,200,.5)}

/* 跳到主要内容（无障碍） */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;
}
.skip-link:focus{left:0}

/* ==========================================================================
 *  二、排版
 * ========================================================================*/
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(34px,5vw,60px);letter-spacing:-.03em}
h2{font-size:clamp(26px,3.4vw,40px);letter-spacing:-.02em}
h3{font-size:20px}
h4{font-size:16px}
p{margin:0}
em{font-style:normal}

/* 渐变文字 */
.grad{
  background:linear-gradient(100deg,#1d4ed8 0%,#2f7de0 45%,#06a5c4 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

/* 小标签（区块上方的小字） */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-3);margin-bottom:14px;
}
.eyebrow::before{
  content:'';width:22px;height:1px;background:linear-gradient(90deg,transparent,var(--brand-3));
}

/* 区块标题 */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:46px;flex-wrap:wrap}
.sec-head .tt{max-width:720px}
.sec-head h2{margin-bottom:14px}
.sec-head p{color:var(--ink-2);font-size:16px}
.sec-more{
  color:var(--brand-3);font-size:14px;font-weight:600;white-space:nowrap;
  display:inline-flex;align-items:center;gap:6px;transition:.22s;
}
.sec-more:hover{gap:12px;color:var(--cyan)}

/* ==========================================================================
 *  三、按钮
 * ========================================================================*/
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:.24s;white-space:nowrap;
  position:relative;overflow:hidden;
}
.btn-primary{
  background:var(--brand-grad);color:#fff;
  box-shadow:0 8px 22px rgba(29,78,216,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(29,78,216,.36)}
.btn-ghost{
  background:#fff;color:var(--ink);
  border-color:var(--line-2);box-shadow:0 2px 10px rgba(21,54,110,.05);
}
.btn-ghost:hover{background:#fff;border-color:var(--brand-2);color:var(--brand);transform:translateY(-2px);box-shadow:0 8px 20px rgba(29,78,216,.14)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}

/* 按钮上的高光扫过 */
.btn-primary::after{
  content:'';position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
  transition:left .6s;
}
.btn-primary:hover::after{left:130%}

/* ==========================================================================
 *  四、顶栏
 * ========================================================================*/
.hdr{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);
  transition:background .3s,border-color .3s,backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.hdr.scrolled{
  background:rgba(255,255,255,.86);backdrop-filter:blur(18px) saturate(180%);
  border-bottom-color:var(--line);
  box-shadow:0 2px 16px rgba(21,54,110,.05);
}
.hdr-in{max-width:var(--wrap);margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;gap:36px}
.logo{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:800;letter-spacing:-.02em}
.logo img{width:34px;height:34px;border-radius:9px;box-shadow:0 2px 10px rgba(29,78,216,.16)}
.logo small{font-size:10px;font-weight:600;color:var(--muted);letter-spacing:.1em;display:block;line-height:1;margin-top:2px}

.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{
  padding:9px 15px;border-radius:9px;font-size:14.5px;font-weight:500;color:var(--ink-2);
  transition:.2s;position:relative;
}
.nav a:hover{color:var(--brand);background:rgba(59,130,246,.07)}
.nav a.on{color:var(--ink)}
.nav a.on::after{
  content:'';position:absolute;left:15px;right:15px;bottom:2px;height:2px;
  background:var(--brand-grad);border-radius:2px;
}
.hdr-cta{display:flex;align-items:center;gap:10px;margin-left:18px}

/* 移动端菜单按钮 */
.burger{display:none;width:40px;height:40px;border-radius:10px;background:#fff;border:1px solid var(--line-2);cursor:pointer;align-items:center;justify-content:center}
.burger i{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.burger i::before,.burger i::after{content:'';position:absolute;left:0;width:18px;height:1.5px;background:var(--ink)}
.burger i::before{top:-5px}.burger i::after{top:5px}

/* ==========================================================================
 *  五、首页
 * ========================================================================*/

/* ---- 首屏 ---- */
.hero{
  position:relative;min-height:auto;display:flex;align-items:center;
  padding:calc(var(--header-h) + 84px) 0 76px;overflow:hidden;
}
/* 背景网格 */
.hero::before{
  content:'';position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(29,78,216,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(29,78,216,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,#000 30%,transparent 100%);
}
/* 光晕 */
.hero::after{
  content:'';position:absolute;width:900px;height:900px;border-radius:50%;
  top:-380px;left:50%;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(59,130,246,.16) 0%,rgba(6,182,212,.09) 42%,transparent 70%);
  filter:blur(46px);pointer-events:none;
}
/* 粒子画布 */
#particles{position:absolute;inset:0;pointer-events:none;opacity:.75}

.hero-in{position:relative;z-index:2;width:100%}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}

.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px 7px 11px;border-radius:999px;
  background:#fff;border:1px solid rgba(59,130,246,.26);
  box-shadow:0 4px 14px rgba(29,78,216,.08);
  font-size:13px;color:var(--brand);margin-bottom:26px;
}
.hero-badge .dot{
  width:6px;height:6px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 3px rgba(0,214,143,.18);animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

.hero h1{margin-bottom:24px}
.hero .lead{font-size:clamp(16px,1.6vw,19px);color:var(--ink-2);max-width:620px;margin-bottom:20px}
.hero .tags{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:32px}
.hero .tags span{
  font-size:12.5px;color:var(--ink-2);padding:5px 13px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}

/* 右侧数据卡 */
.hero-vis{position:relative}
.glass{
  background:#fff;
  border:1px solid var(--line-2);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);
}
.stat-card{padding:24px;transform-style:preserve-3d;will-change:transform}
.stat-head{display:flex;align-items:center;gap:7px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:20px}
.stat-head i{width:9px;height:9px;border-radius:50%;background:var(--line-2)}
.stat-head i:first-child{background:#ff5f57}
.stat-head i:nth-child(2){background:#febc2e}
.stat-head i:nth-child(3){background:#28c840}
.stat-head b{margin-left:8px;font-size:13px;color:var(--ink-2);font-weight:600}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;text-align:center}
.stat-grid b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(120deg,#1d4ed8,#06a5c4);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-grid span{font-size:11.5px;color:var(--muted)}
.stat-bars{display:flex;align-items:flex-end;gap:6px;height:74px;margin:22px 0 16px}
.stat-bars i{
  flex:1;border-radius:4px 4px 2px 2px;
  background:linear-gradient(180deg,var(--brand-3),var(--brand));
  opacity:.85;transform-origin:bottom;animation:barGrow 1.6s cubic-bezier(.22,1,.36,1) backwards;
}
@keyframes barGrow{from{transform:scaleY(0);opacity:0}}
.stat-foot{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);
  padding-top:15px;border-top:1px solid var(--line)}
.stat-foot b{color:var(--cyan);font-family:var(--mono)}

/* 浮动小卡 */
.float{
  position:absolute;padding:11px 16px;border-radius:12px;font-size:12.5px;font-weight:600;
  display:flex;align-items:center;gap:9px;white-space:nowrap;
  background:#fff;border:1px solid var(--line-2);
  box-shadow:0 10px 28px rgba(21,54,110,.14);
  color:var(--ink);
}
.float svg{width:15px;height:15px;color:var(--brand-3);flex:none}
.float-a{top:-18px;right:-14px;animation:floatY 5s ease-in-out infinite}
.float-b{bottom:-16px;left:-24px;animation:floatY 5s ease-in-out infinite .8s}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-11px)}}

/* ---- 数据带 ---- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr)}
.stats-in > div{padding:34px 20px;text-align:center;border-right:1px solid var(--line)}
.stats-in > div:last-child{border-right:none}
.stats-in b{display:block;font-size:clamp(28px,3.6vw,42px);font-weight:800;letter-spacing:-.03em;margin-bottom:6px}
.stats-in span{font-size:13px;color:var(--muted)}

/* ---- 通用区块 ---- */
.section{padding:86px 0;position:relative}
.section.alt{background:linear-gradient(180deg,var(--bg-2),#f9fbfe)}
.section.tight{padding:80px 0}

/* ---- 三大业务 ---- */
.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.biz{
  position:relative;padding:34px 30px;border-radius:var(--radius-lg);
  background:#fff;border:1px solid var(--line);
  box-shadow:0 4px 18px rgba(21,54,110,.05);
  transition:.35s cubic-bezier(.22,1,.36,1);overflow:hidden;
}
.biz::before{
  content:'';position:absolute;inset:0;opacity:0;transition:.35s;
  background:radial-gradient(600px circle at var(--mx,50%) var(--my,0%),rgba(59,130,246,.09),transparent 45%);
}
.biz:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:0 18px 46px rgba(21,54,110,.12)}
.biz:hover::before{opacity:1}
.biz-ico{
  width:50px;height:50px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-grad-soft);border:1px solid rgba(59,130,246,.22);margin-bottom:22px;
  position:relative;z-index:1;
}
.biz-ico svg{width:24px;height:24px;color:var(--brand-3)}
.biz h3{margin-bottom:11px;position:relative;z-index:1}
.biz p{color:var(--ink-2);font-size:14.5px;margin-bottom:20px;position:relative;z-index:1}
.biz ul{list-style:none;padding:0;margin:0 0 24px;position:relative;z-index:1}
.biz li{
  font-size:13.5px;color:var(--muted);padding-left:20px;position:relative;margin-bottom:9px;
}
.biz li::before{
  content:'';position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-3);box-shadow:0 0 8px rgba(6,182,212,.7);
}
.biz-link{
  font-size:14px;font-weight:600;color:var(--brand-3);
  display:inline-flex;align-items:center;gap:6px;transition:.22s;position:relative;z-index:1;
}
.biz:hover .biz-link{gap:11px;color:var(--cyan)}

/* ---- 能力清单 ---- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cap{
  padding:26px 24px;border-radius:var(--radius);background:#fff;
  border:1px solid var(--line);box-shadow:0 3px 14px rgba(21,54,110,.04);transition:.3s;
}
.cap:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:0 14px 34px rgba(21,54,110,.1)}
.cap-ico{width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(6,182,212,.1);border:1px solid rgba(6,182,212,.22);margin-bottom:16px}
.cap-ico svg{width:19px;height:19px;color:var(--cyan)}
.cap h4{margin-bottom:9px}
.cap p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ---- 解决方案 ---- */
.sol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.sol{
  display:flex;gap:22px;padding:30px;border-radius:var(--radius-lg);
  background:#fff;border:1px solid var(--line);box-shadow:0 4px 18px rgba(21,54,110,.05);
  transition:.32s;
}
.sol:hover{border-color:var(--line-2);transform:translateX(5px);box-shadow:0 16px 40px rgba(21,54,110,.11)}
.sol-ico{width:52px;height:52px;border-radius:15px;flex:none;display:flex;align-items:center;justify-content:center;
  background:var(--brand-grad);box-shadow:0 8px 24px rgba(29,78,216,.4)}
.sol-ico svg{width:25px;height:25px;color:#fff}
.sol h3{margin-bottom:10px;font-size:18px}
.sol p{font-size:14px;color:var(--ink-2);margin-bottom:14px}
.sol .chips{display:flex;flex-wrap:wrap;gap:7px}
.sol .chips span{font-size:12px;color:var(--brand-3);padding:4px 11px;border-radius:7px;
  background:rgba(6,182,212,.08);border:1px solid rgba(6,182,212,.2)}

/* ---- 客户 ---- */
.clients{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.clients div{
  background:#fff;padding:30px 16px;display:flex;align-items:center;justify-content:center;
  font-size:13.5px;color:var(--dim);font-weight:600;transition:.3s;text-align:center;
}
.clients div:hover{background:var(--panel-2);color:var(--brand)}

/* ---- CTA ---- */
.cta{
  position:relative;padding:62px 56px;border-radius:var(--radius-lg);text-align:center;overflow:hidden;
  background:linear-gradient(135deg,#eaf2ff 0%,#e6f6fb 55%,#eef8f5 100%);
  border:1px solid var(--line-2);
  box-shadow:0 10px 40px rgba(21,54,110,.06);
}
.cta::before{
  content:'';position:absolute;width:600px;height:600px;border-radius:50%;
  top:-300px;left:50%;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(59,130,246,.16),transparent 65%);filter:blur(34px);
}
.cta > *{position:relative;z-index:1}
.cta h2{margin-bottom:16px}
.cta p{color:var(--ink-2);font-size:16px;max-width:620px;margin:0 auto 34px}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ==========================================================================
 *  六、内页通用
 * ========================================================================*/

/* 页头 */
.page-head{
  position:relative;padding:calc(var(--header-h) + 66px) 0 58px;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:'';position:absolute;width:800px;height:800px;border-radius:50%;
  top:-500px;left:50%;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(59,130,246,.14),transparent 68%);filter:blur(34px);
}
.page-head .wrap{position:relative;z-index:1}
.crumb{font-size:13px;color:var(--dim);margin-bottom:18px}
.crumb a{color:var(--muted);transition:.2s}
.crumb a:hover{color:var(--brand-3)}
.crumb span{margin:0 8px;opacity:.5}
.page-head h1{font-size:clamp(30px,4vw,46px);margin-bottom:16px}
.page-head .lead{font-size:17px;color:var(--ink-2);max-width:760px}

/* 正文排版 */
.prose{max-width:820px}
.prose h2{font-size:26px;margin:46px 0 16px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;margin:34px 0 12px;color:var(--ink)}
.prose p{color:var(--ink-2);margin-bottom:16px;font-size:15.5px}
.prose ul,.prose ol{color:var(--ink-2);padding-left:22px;margin:0 0 18px}
.prose li{margin-bottom:9px}
.prose strong{color:var(--ink);font-weight:600}

/* 卡片网格 */
.grid{display:grid;gap:22px}
.grid.g2{grid-template-columns:repeat(2,1fr)}
.grid.g3{grid-template-columns:repeat(3,1fr)}
.grid.g4{grid-template-columns:repeat(4,1fr)}

.card{
  padding:30px;border-radius:var(--radius);background:#fff;
  border:1px solid var(--line);box-shadow:0 4px 18px rgba(21,54,110,.05);transition:.3s;
}
.card:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:0 16px 40px rgba(21,54,110,.1)}
.card h3{margin-bottom:12px;font-size:18px}
.card p{color:var(--muted);font-size:14px}

/* 参数表 */
.tbl{width:100%;border-collapse:collapse;font-size:14px;margin:22px 0 34px}
.tbl th,.tbl td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{color:var(--ink);font-weight:600;background:var(--panel-2);font-size:13px}
.tbl td{color:var(--ink-2)}
.tbl tr:hover td{background:rgba(59,130,246,.045)}

/* 时间线 */
.tl{position:relative;padding-left:34px}
.tl::before{content:'';position:absolute;left:7px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--brand-2),var(--brand-3),transparent)}
.tl-item{position:relative;padding-bottom:38px}
.tl-item::before{
  content:'';position:absolute;left:-34px;top:7px;width:15px;height:15px;border-radius:50%;
  background:#fff;border:2px solid var(--brand-3);box-shadow:0 0 0 4px rgba(6,182,212,.13);
}
.tl-item b{display:block;font-size:15px;margin-bottom:6px}
.tl-item .yr{font-family:var(--mono);font-size:12.5px;color:var(--brand-3);margin-bottom:7px;display:block}
.tl-item p{font-size:14px;color:var(--muted)}

/* 联系信息块 */
.info-list{display:grid;gap:2px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.info{background:#fff;padding:26px 28px;display:flex;gap:18px;align-items:flex-start}
.info-ico{width:42px;height:42px;border-radius:12px;flex:none;display:flex;align-items:center;justify-content:center;
  background:var(--brand-grad-soft);border:1px solid rgba(59,130,246,.25)}
.info-ico svg{width:19px;height:19px;color:var(--brand-3)}
.info b{display:block;font-size:14px;margin-bottom:5px}
.info p{font-size:14px;color:var(--ink-2)}
.info small{color:var(--dim);font-size:12.5px}

/* 表单 */
.form{display:grid;gap:18px}
.field label{display:block;font-size:13.5px;color:var(--ink-2);margin-bottom:8px;font-weight:500}
.field label i{color:var(--danger);font-style:normal;margin-left:3px}
.input,.textarea,.select{
  width:100%;padding:13px 16px;border-radius:11px;font-size:14.5px;font-family:inherit;
  background:#fff;border:1px solid var(--line-2);color:var(--ink);
  transition:.22s;outline:none;
}
.input:focus,.textarea:focus,.select:focus{
  border-color:var(--brand-2);background:#fff;
  box-shadow:0 0 0 4px rgba(59,130,246,.13);
}
.input::placeholder,.textarea::placeholder{color:var(--dim)}
.textarea{min-height:130px;resize:vertical;line-height:1.7}
.select{appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237d8fb5' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}

/* 提示条 */
.notice{
  display:flex;gap:14px;padding:18px 22px;border-radius:var(--radius-sm);
  background:#fff8e8;border:1px solid rgba(230,150,10,.26);margin:26px 0;
}
.notice svg{width:19px;height:19px;color:#c47f00;flex:none;margin-top:3px}
.notice p{font-size:14px;color:#8a5d00;margin:0}
.notice.info{background:#eef5ff;border-color:rgba(59,130,246,.24)}
.notice.info svg{color:var(--brand)}
.notice.info p{color:#23509c}

/* ==========================================================================
 *  七、页脚
 * ========================================================================*/
footer{border-top:1px solid var(--line);background:#fff;padding:60px 0 30px;margin-top:0}
.f-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:38px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.f-brand .logo{margin-bottom:18px}
.f-brand p{font-size:13.5px;color:var(--muted);max-width:290px;line-height:1.85}
.f-col h5{font-size:13.5px;margin-bottom:18px;color:var(--ink)}
.f-col ul{list-style:none;padding:0;margin:0}
.f-col li{margin-bottom:11px}
.f-col a{font-size:13.5px;color:var(--muted);transition:.2s}
.f-col a:hover{color:var(--brand)}
.f-bot{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:28px;
  font-size:12.5px;color:var(--dim);flex-wrap:wrap}
.f-bot a{color:var(--dim);transition:.2s}
/* ICP 备案号：页脚版权行后面，字号再小一点，颜色淡一点，不抢视线但必须能看清 */
.f-bot .icp{margin-left:16px;font-size:12px}
.f-bot .icp a{color:var(--dim)}
.f-bot .icp a:hover{color:var(--brand-3)}
.f-bot a:hover{color:var(--brand-3)}
.f-links{display:flex;gap:20px;flex-wrap:wrap}

/* ==========================================================================
 *  八、动效
 * ========================================================================*/

/* 滚动进场 */
.rv{opacity:0;transform:translateY(30px);transition:opacity .8s cubic-bezier(.22,1,.36,1),transform .8s cubic-bezier(.22,1,.36,1)}
.rv.in{opacity:1;transform:none}
.rv-l{opacity:0;transform:translateX(-38px);transition:opacity .8s cubic-bezier(.22,1,.36,1),transform .8s cubic-bezier(.22,1,.36,1)}
.rv-l.in{opacity:1;transform:none}
.rv-r{opacity:0;transform:translateX(38px);transition:opacity .8s cubic-bezier(.22,1,.36,1),transform .8s cubic-bezier(.22,1,.36,1)}
.rv-r.in{opacity:1;transform:none}
.rv-s{opacity:0;transform:scale(.94);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
.rv-s.in{opacity:1;transform:none}

/* 顶部进度条 */
.progress{position:fixed;top:0;left:0;height:2px;z-index:200;width:0;
  background:linear-gradient(90deg,var(--brand),var(--brand-3));box-shadow:0 0 12px rgba(6,182,212,.5)}

/* 光标跟随光点（桌面端） */
.cursor-glow{
  position:fixed;width:420px;height:420px;border-radius:50%;pointer-events:none;z-index:1;
  background:radial-gradient(circle,rgba(59,130,246,.13),transparent 62%);
  transform:translate(-50%,-50%);transition:opacity .4s;opacity:0;filter:blur(24px);
}
body.has-cursor .cursor-glow{opacity:1}

/* 尊重「减少动效」偏好 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .rv,.rv-l,.rv-r,.rv-s{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* --------------------------------------------------------------------------
 *  截图 / 无动效模式
 *  加 ?noanim=1 时由 site.js 给 <html> 挂上 .no-anim，
 *  所有进场动效直接显示终态 —— 这样截图工具不用等动画跑完，
 *  也方便自动化测试断言元素位置。
 * ------------------------------------------------------------------------*/
html.no-anim .rv,html.no-anim .rv-l,html.no-anim .rv-r,html.no-anim .rv-s{
  opacity:1 !important;transform:none !important;transition:none !important;
}
html.no-anim .stat-bars i{animation:none !important;opacity:1}
html.no-anim .float,html.no-anim .hero-badge .dot{animation:none !important}
html.no-anim *{transition-duration:0s !important}

/* ==========================================================================
 *  九、响应式
 * ========================================================================*/
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:50px}
  .biz-grid,.cap-grid{grid-template-columns:repeat(2,1fr)}
  .clients{grid-template-columns:repeat(3,1fr)}
  .f-top{grid-template-columns:1fr 1fr 1fr;gap:34px}
  .stats-in{grid-template-columns:repeat(2,1fr)}
  .stats-in > div:nth-child(2){border-right:none}
  .stats-in > div:nth-child(1),.stats-in > div:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:860px){
  .nav{
    position:fixed;top:var(--header-h);left:0;right:0;flex-direction:column;align-items:stretch;
    gap:2px;padding:16px 20px 24px;background:rgba(255,255,255,.98);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);box-shadow:0 12px 30px rgba(21,54,110,.09);
    transform:translateY(-120%);transition:transform .35s cubic-bezier(.22,1,.36,1);
  }
  .nav.open{transform:none}
  .nav a{padding:13px 14px;font-size:15px}
  .nav a.on::after{display:none}
  .nav a.on{background:rgba(59,130,246,.1);color:var(--brand)}
  .burger{display:flex}
  .hdr-cta{margin-left:auto}
  .hdr-cta .btn{display:none}
  .sol-grid,.grid.g3,.grid.g4{grid-template-columns:1fr}
  .grid.g2{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .section{padding:62px 0}
  .cta{padding:50px 26px}
  .sec-head{margin-bottom:38px}
}
@media (max-width:560px){
  .wrap{padding:0 18px}
  .biz-grid,.cap-grid{grid-template-columns:1fr}
  .clients{grid-template-columns:repeat(2,1fr)}
  .f-top{grid-template-columns:1fr;gap:30px}
  .stat-grid{grid-template-columns:repeat(3,1fr);gap:8px}
  .stats-in{grid-template-columns:1fr 1fr}
  .hero{padding-top:calc(var(--header-h) + 30px)}
}