/* ===========================================================
   华智云农官网 —— 样式表
   目录：变量 / 基础 / 头部导航 / 首页 / 通用区块 / 公司介绍
        公司业务 / 技术支持 / 联系我们 / 页脚 / 悬浮 / 灯箱 / 响应式
   =========================================================== */

:root{
  --green-700:#0B6B42;
  --green-600:#0E7C4A;
  --green-500:#12A05F;
  --green-400:#2FBF7E;
  --green-300:#7CE8AF;
  --green-050:#EAF7F0;
  --ink:#0F1A15;
  --ink-2:#2C3A33;
  --muted:#6B7C74;
  --line:#E3EBE6;
  --soft:#F5F9F7;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(15,26,21,.08);
  --shadow-lg:0 18px 50px rgba(15,26,21,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:68px;

  /* 图标（单色 SVG mask） */
  --i-clock:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M12 7v5l3 2'/%3E%3C/svg%3E");
  --i-headset:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 15v-3a8 8 0 0 1 16 0v3'/%3E%3Cpath d='M4 15h3v5H5a1 1 0 0 1-1-1z'/%3E%3Cpath d='M20 15h-3v5h2a1 1 0 0 0 1-1z'/%3E%3C/svg%3E");
  --i-tool:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M15.5 3.5a5 5 0 0 0-6.6 6.3L3 16v5h5l6-6a5 5 0 0 0 6.5-6.6l-4.2 4.2-2.6-2.6z'/%3E%3C/svg%3E");
  --i-refresh:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 12a9 9 0 1 1-2.6-6.4'/%3E%3Cpolyline points='21 3 21 9 15 9'/%3E%3C/svg%3E");
  --i-shield:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z'/%3E%3Cpath d='M9 12l2 2 4-4'/%3E%3C/svg%3E");
  --i-tel:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 16.9v3a2 2 0 0 1-2.2 2 19.8 19.8 0 0 1-8.6-3.1 19.5 19.5 0 0 1-6-6A19.8 19.8 0 0 1 2.1 4.2 2 2 0 0 1 4.1 2h3a2 2 0 0 1 2 1.7c.1 1 .4 1.9.7 2.8a2 2 0 0 1-.5 2.1L8.1 9.9a16 16 0 0 0 6 6l1.3-1.3a2 2 0 0 1 2.1-.4c.9.3 1.8.6 2.8.7a2 2 0 0 1 1.7 2z'/%3E%3C/svg%3E");
  --i-pin:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 10c0 6-8 12-8 12s-8-6-8-12a8 8 0 0 1 16 0z'/%3E%3Ccircle cx='12' cy='10' r='3'/%3E%3C/svg%3E");
  --i-qr:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='7' height='7' rx='1.5'/%3E%3Crect x='14' y='3' width='7' height='7' rx='1.5'/%3E%3Crect x='3' y='14' width='7' height='7' rx='1.5'/%3E%3Cpath d='M14 14h.01M18 14h.01M14 18h.01M18 18h.01M21 17h.01M17 21h.01M21 21h.01'/%3E%3C/svg%3E");
  --i-download:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3v11'/%3E%3Cpath d='M7.5 9.5L12 14l4.5-4.5'/%3E%3Cpath d='M4 16v3a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2v-3'/%3E%3C/svg%3E");
  --i-chip:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='3'/%3E%3Crect x='8' y='8' width='8' height='8' rx='1'/%3E%3Cpath d='M12 3v5M12 16v5M3 12h5M16 12h5'/%3E%3C/svg%3E");
  --i-link:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 13a5 5 0 0 0 7 0l3-3a5 5 0 0 0-7-7l-1 1'/%3E%3Cpath d='M14 11a5 5 0 0 0-7 0l-3 3a5 5 0 0 0 7 7l1-1'/%3E%3C/svg%3E");
  --i-copy:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='8' y='8' width='12' height='12' rx='2'/%3E%3Cpath d='M16 8V6a2 2 0 0 0-2-2H6a2 2 0 0 0-2 2v8a2 2 0 0 0 2 2h2'/%3E%3C/svg%3E");
  --i-house:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 20h18'/%3E%3Cpath d='M4 20V9l8-5 8 5v11'/%3E%3Cpath d='M9 20v-6h6v6'/%3E%3C/svg%3E");
  --i-sun:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='4'/%3E%3Cpath d='M12 2v2M12 20v2M2 12h2M20 12h2M4.9 4.9l1.4 1.4M17.7 17.7l1.4 1.4M19.1 4.9l-1.4 1.4M6.3 17.7l-1.4 1.4'/%3E%3C/svg%3E");
  --i-grid:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='7' height='7' rx='1'/%3E%3Crect x='14' y='3' width='7' height='7' rx='1'/%3E%3Crect x='3' y='14' width='7' height='7' rx='1'/%3E%3Crect x='14' y='14' width='7' height='7' rx='1'/%3E%3C/svg%3E");
  --i-top:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 19V5'/%3E%3Cpolyline points='5 12 12 5 19 12'/%3E%3C/svg%3E");
  --i-volume:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M11 5 6 9H3v6h3l5 4z'/%3E%3Cpath d='M16 9a4 4 0 0 1 0 6'/%3E%3Cpath d='M19 6a8 8 0 0 1 0 12'/%3E%3C/svg%3E");
  --i-mute:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M11 5 6 9H3v6h3l5 4z'/%3E%3Cpath d='M17 9l5 6M22 9l-5 6'/%3E%3C/svg%3E");
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:#fff;color:var(--ink-2);
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.text-gradient{
  background:linear-gradient(100deg,var(--green-300),#46D69A 55%,#8FE3B6);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;height:52px;padding:0 30px;
  border-radius:999px;font-weight:600;font-size:16px;transition:all .3s var(--ease);
}
.btn--primary{background:var(--green-500);color:#fff;box-shadow:0 8px 22px rgba(18,160,95,.32)}
.btn--primary:hover{background:var(--green-600);transform:translateY(-2px);box-shadow:0 12px 28px rgba(18,160,95,.4)}
.btn--ghost{border:1px solid rgba(255,255,255,.45);color:#fff;backdrop-filter:blur(4px)}
.btn--ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px)}
.btn--block{width:100%}

/* 进场动画 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .72s var(--ease),transform .72s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 头部导航 ---------- */
/* 常驻白色实底，保证菜单与 Logo 始终清晰，不被视频覆盖 */
.header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:var(--header-h);
  background:rgba(255,255,255,.96);backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--line);
  transition:height .35s var(--ease),box-shadow .35s var(--ease);
}
.header.is-solid{box-shadow:var(--shadow)}
.header__inner{height:100%;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center}
.brand__logo{height:34px;width:auto;transition:height .3s var(--ease)}

.nav{display:flex;align-items:center;gap:6px}
.nav__link{
  position:relative;padding:8px 16px;border-radius:999px;font-size:16px;color:var(--ink-2);
  transition:color .25s,background .25s;
}
.nav__link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;border-radius:2px;
  background:var(--green-500);transform:scaleX(0);transform-origin:center;transition:transform .3s var(--ease);
}
.nav__link.is-active::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--green-600)}
.nav__link:hover{color:var(--green-600)}
.nav__link--btn{margin-left:10px;background:var(--green-500);color:#fff !important;padding:9px 22px}
.nav__link--btn::after{display:none}
.nav__link--btn:hover{background:var(--green-600);color:#fff !important}

.nav-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);transition:all .3s var(--ease);border-radius:2px}
.nav-toggle.is-open span{background:var(--ink)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 首页 Hero ---------- */
/* 视频满宽：左右铺满屏幕，顶边紧贴 header 下沿，不做圆角 */
.hero{position:relative;padding:var(--header-h) 0 0;background:#fff}
.hero__box{position:relative;width:100%;max-width:100%;margin:0;overflow:hidden;background:#08150F}
.hero__media{position:absolute;inset:0}
.hero__video{width:100%;height:100%;object-fit:cover}
.hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,20,14,.72) 0%,rgba(6,20,14,.55) 40%,rgba(6,20,14,.86) 100%);
}
.hero__inner{
  position:relative;z-index:2;padding:104px 24px 116px;text-align:center;
  min-height:max(460px,calc(100vh - 220px));
  display:flex;flex-direction:column;justify-content:center;
}
.hero__eyebrow{
  font-size:13px;letter-spacing:.3em;color:var(--green-300);margin-bottom:22px;font-weight:600;
  text-transform:uppercase;
}
.hero__title{font-size:clamp(32px,5.2vw,60px);color:#fff;letter-spacing:.5px;margin-bottom:24px;font-weight:800}
.hero__desc{max-width:720px;margin:0 auto 36px;color:rgba(255,255,255,.82);font-size:clamp(15px,1.5vw,17px)}
.hero__actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero__stats{
  display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:64px;
}
.hero__stats li{
  min-width:150px;padding:18px 22px;border-radius:14px;text-align:center;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(6px);
}
.hero__stats b{display:block;font-size:32px;color:#fff;line-height:1.2;font-weight:800}
.hero__stats span{font-size:13px;color:rgba(255,255,255,.72);letter-spacing:.05em}

.hero__sound{
  position:absolute;right:30px;bottom:34px;z-index:3;display:flex;align-items:center;gap:9px;
  padding:9px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.35);
  color:#fff;font-size:14px;backdrop-filter:blur(6px);transition:all .3s var(--ease);
}
.hero__sound:hover{background:rgba(255,255,255,.14)}
.hero__sound-ico{
  width:20px;height:20px;background:#fff;
  -webkit-mask:var(--i-volume) center/20px 20px no-repeat;mask:var(--i-volume) center/20px 20px no-repeat;
}
.hero__sound.is-on .hero__sound-ico{-webkit-mask-image:var(--i-mute);mask-image:var(--i-mute);opacity:.6}

.hero__scroll{position:absolute;left:50%;bottom:24px;z-index:3;transform:translateX(-50%);width:26px;height:42px;
  border:1px solid rgba(255,255,255,.4);border-radius:14px}
.hero__scroll span{position:absolute;left:50%;top:8px;width:4px;height:8px;margin-left:-2px;border-radius:2px;
  background:var(--green-300);animation:scrollDot 1.6s infinite}
@keyframes scrollDot{0%{opacity:0;transform:translateY(0)}30%{opacity:1}100%{opacity:0;transform:translateY(16px)}}

/* ---------- 通用区块 ---------- */
.section{padding:104px 0;background:#fff}
.section--soft{background:var(--soft)}
.sec-head{max-width:760px;margin:0 auto 56px;text-align:center}
.sec-tag{display:inline-block;font-size:12px;letter-spacing:.26em;color:var(--green-500);font-weight:700;margin-bottom:12px}
.sec-title{font-size:clamp(26px,3.2vw,38px);margin-bottom:16px}
.sec-title::after{
  content:"";display:block;width:56px;height:3px;border-radius:3px;margin:18px auto 0;
  background:linear-gradient(90deg,var(--green-500),var(--green-300));
}
.sec-sub{color:var(--muted);font-size:16px}

.grid{display:grid;gap:22px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}

/* ---------- 公司介绍 ---------- */
.about{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;margin-bottom:72px}
.about__media{display:grid;gap:18px}
.about__stack{position:relative}
.about__img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.about__img--sm{
  position:absolute;right:-14px;bottom:-26px;width:40%;aspect-ratio:1/1;
  border:5px solid #fff;border-radius:14px;box-shadow:var(--shadow);
}
.about__lead{font-size:clamp(20px,2.2vw,26px);line-height:1.5;margin-bottom:20px;color:var(--ink)}
.about__body p{color:var(--muted);margin-bottom:14px}
.about__body strong{color:var(--ink)}

.about__points{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px}
.pt{
  padding:18px 10px;text-align:center;border-radius:14px;background:var(--green-050);
  border:1px solid rgba(18,160,95,.12);
}
.pt__ico{display:block;width:26px;height:26px;margin:0 auto 8px;background:var(--green-500);
  -webkit-mask:var(--i-chip) center/contain no-repeat;mask:var(--i-chip) center/contain no-repeat}
.pt__ico--link{-webkit-mask-image:var(--i-link);mask-image:var(--i-link)}
.pt__ico--copy{-webkit-mask-image:var(--i-copy);mask-image:var(--i-copy)}
.pt__ico--shield{-webkit-mask-image:var(--i-shield);mask-image:var(--i-shield)}
.pt span{font-size:13px;color:var(--green-700);font-weight:600;line-height:1.5}

.media-play{position:relative;display:block;width:100%;padding:0;border-radius:var(--radius);overflow:hidden}
.media-play img{width:100%;aspect-ratio:3/1;object-fit:cover;transition:transform .6s var(--ease)}
.media-play::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,20,14,.1),rgba(6,20,14,.6));
}
.media-play:hover img{transform:scale(1.05)}
.media-play__btn{
  position:absolute;left:50%;top:48%;transform:translate(-50%,-50%);z-index:2;width:62px;height:62px;border-radius:50%;
  background:rgba(255,255,255,.9);box-shadow:0 10px 26px rgba(0,0,0,.28);transition:transform .3s var(--ease);
}
.media-play__btn::before{
  content:"";position:absolute;left:50%;top:50%;width:0;height:0;margin:-11px 0 0 -5px;
  border-left:16px solid var(--green-600);border-top:11px solid transparent;border-bottom:11px solid transparent;
}
.media-play:hover .media-play__btn{transform:translate(-50%,-50%) scale(1.1)}
.media-play__label{
  position:absolute;left:50%;top:calc(48% + 46px);transform:translateX(-50%);z-index:2;color:#fff;
  font-size:15px;font-weight:600;letter-spacing:.06em;white-space:nowrap;
}

/* 服务流程 */
.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-bottom:80px}
.flow__item{position:relative;padding:24px 16px;border-radius:14px;background:var(--soft);text-align:center;
  border:1px solid var(--line);transition:all .3s var(--ease)}
.section--soft .flow__item{background:#fff}
.flow__item:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:transparent}
.flow__item i{
  display:flex;align-items:center;justify-content:center;width:34px;height:34px;margin:0 auto 12px;
  border-radius:50%;background:var(--green-500);color:#fff;font-style:normal;font-weight:700;font-size:15px;
}
.flow__item h4{font-size:16px;margin-bottom:6px}
.flow__item p{font-size:13px;color:var(--muted);line-height:1.6}

/* 案例 */
.cases__head{max-width:700px;margin:0 auto 28px;text-align:center}
.cases__title{font-size:24px;margin-bottom:10px}
.cases__desc{color:var(--muted);font-size:15px}
.cases__map{width:100%;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:26px}
.cases__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{margin:0;position:relative;border-radius:14px;overflow:hidden;box-shadow:var(--shadow);background:#fff}
.case-card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .6s var(--ease)}
.case-card:hover img{transform:scale(1.06)}
.case-card figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 18px;color:#fff;font-weight:600;font-size:15px;
  background:linear-gradient(180deg,rgba(6,20,14,0),rgba(6,20,14,.78));
}

/* ---------- 公司业务 ---------- */
.tabs{display:flex;justify-content:center;gap:10px;margin-bottom:40px;flex-wrap:wrap}
.tabs__btn{
  padding:11px 26px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2);
  font-size:15px;font-weight:600;transition:all .3s var(--ease);
}
.tabs__btn:hover{border-color:var(--green-400);color:var(--green-600)}
.tabs__btn.is-active{background:var(--green-500);border-color:var(--green-500);color:#fff;box-shadow:0 8px 20px rgba(18,160,95,.28)}
.tab-panel{display:none}
.tab-panel.is-active{display:block}
/* 暂时下架某个模块：给 Tab 按钮和对应面板加上 is-temp-hidden 即可，恢复时删掉这个类 */
.is-temp-hidden{display:none !important}
.tab-panel.is-active .card{animation:cardIn .5s var(--ease) both}
.tab-panel.is-active .card:nth-child(2){animation-delay:.05s}
.tab-panel.is-active .card:nth-child(3){animation-delay:.1s}
.tab-panel.is-active .card:nth-child(4){animation-delay:.15s}
.tab-panel.is-active .card:nth-child(5){animation-delay:.2s}
.tab-panel.is-active .card:nth-child(6){animation-delay:.25s}
.tab-panel.is-active .card:nth-child(n+7){animation-delay:.3s}
@keyframes cardIn{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}

.card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:0 2px 10px rgba(15,26,21,.04);transition:all .35s var(--ease);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.card__media{aspect-ratio:4/3;background:var(--green-050);overflow:hidden}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .card__media img{transform:scale(1.07)}
.card__body{padding:16px 18px 20px}
.card__body h3{font-size:17px;margin-bottom:6px}
.card__body p{font-size:13.5px;color:var(--muted);line-height:1.65}
.card__tag{
  position:absolute;top:12px;right:12px;z-index:2;padding:4px 12px;border-radius:999px;font-size:12px;
  background:rgba(6,20,14,.6);color:#fff;backdrop-filter:blur(4px);
}
.card--wide .card__media{aspect-ratio:16/9}

.check-list{margin-top:16px}
.check-list li{position:relative;padding-left:26px;margin-bottom:8px;color:var(--muted);font-size:15px}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--green-500);border-bottom:2px solid var(--green-500);transform:rotate(-45deg);
}

.soft-app{display:grid;grid-template-columns:1fr 340px;gap:56px;align-items:center;justify-content:center;
  max-width:960px;margin:64px auto 0}
.soft-app__text h3{font-size:24px;margin-bottom:14px}
.soft-app__text>p{color:var(--muted)}
/* 手机样机展示 */
.soft-app__shot{display:flex;justify-content:center}
.phone{
  margin:0;width:100%;max-width:270px;padding:10px;border-radius:34px;background:#0F1A15;
  box-shadow:var(--shadow-lg);overflow:hidden;cursor:zoom-in;transition:transform .4s var(--ease);
}
.phone:hover{transform:translateY(-8px)}
.phone img{width:100%;aspect-ratio:9/19 !important;border-radius:26px;background:#0F1A15;
  object-fit:cover;object-position:top center}

/* ---------- App 功能一览（软件平台 · 总分结构） ---------- */
.app-func{max-width:1200px;margin:76px auto 0}
.app-func__intro{max-width:720px;margin:0 auto 40px;text-align:center}
.app-func__intro h3{font-size:24px;margin-bottom:12px}
.app-func__intro p{color:var(--muted)}
.app-func__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.app-func__item{
  display:flex;flex-direction:column;padding:20px 18px 22px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.app-func__item:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
/* 截图自带手机边框，不再套 .phone 外壳，只做圆角卡片 */
.app-func__shot{margin:0 0 16px;border-radius:16px;overflow:hidden;border:1px solid var(--line);
  background:#fff;cursor:zoom-in;box-shadow:0 8px 20px rgba(11,23,17,.08)}
.app-func__shot img{display:block;width:100%}
.app-func__item h4{font-size:17px;margin-bottom:8px}
.app-func__sum{font-size:14px;line-height:1.7;color:var(--ink-2);margin-bottom:12px}
.app-func__points{margin-top:auto}
.app-func__points li{position:relative;padding-left:15px;margin-bottom:7px;color:var(--muted);font-size:13.5px;line-height:1.6}
.app-func__points li::before{content:"";position:absolute;left:2px;top:8px;width:6px;height:6px;border-radius:50%;background:var(--green-300)}
@media (max-width:1080px){
  .app-func__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  /* 窄屏改横滑卡片，避免 8 张截图叠出超长页面 */
  .app-func__grid{
    grid-template-columns:none;grid-auto-flow:column;grid-auto-columns:78%;
    gap:16px;overflow-x:auto;padding:4px 2px 14px;scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .app-func__grid::-webkit-scrollbar{display:none}
  .app-func__item{scroll-snap-align:center;padding:16px 14px 18px}
}

.sol{
  display:grid;grid-template-columns:auto minmax(0,1fr);grid-template-rows:56px auto auto;
  column-gap:14px;align-items:center;
  padding:26px 26px 28px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);
  transition:all .35s var(--ease);
}
.sol:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
/* 图标与标题同一行：图标第 1 列、标题第 2 列，正文与要点列表跨两列 */
.sol__icon{
  grid-column:1;grid-row:1;margin:0;width:42px;height:42px;border-radius:12px;background:var(--green-500);
  -webkit-mask:var(--i-house) center/22px 22px no-repeat;mask:var(--i-house) center/22px 22px no-repeat;
}
.sol__icon--sun{-webkit-mask-image:var(--i-sun);mask-image:var(--i-sun)}
.sol__icon--grid{-webkit-mask-image:var(--i-grid);mask-image:var(--i-grid)}
.sol h3{grid-column:2;grid-row:1;margin:0;font-size:18px;line-height:1.45}
.sol p{grid-column:1/-1;margin:16px 0 14px;color:var(--muted);font-size:14.5px}
.sol ul{grid-column:1/-1}
.sol ul li{position:relative;padding-left:22px;font-size:14px;color:var(--ink-2);margin-bottom:6px}
.sol ul li::before{
  content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--green-400);
}
.sol-shot{margin-top:40px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.sol-shot img{width:100%}

/* ---------- 技术支持 ---------- */
.svc{display:block;margin-bottom:64px}
.svc__cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.svc__cards--4{grid-template-columns:repeat(4,1fr)}
.svc__card{padding:26px 24px;border-radius:var(--radius);background:var(--soft);border:1px solid var(--line);transition:all .35s var(--ease)}
.svc__card:hover{background:#fff;transform:translateY(-5px);box-shadow:var(--shadow)}
.svc__ico{
  width:40px;height:40px;margin-bottom:14px;border-radius:11px;background:var(--green-500);
  -webkit-mask:var(--i-headset) center/22px 22px no-repeat;mask:var(--i-headset) center/22px 22px no-repeat;
}
.svc__ico--tool{-webkit-mask-image:var(--i-tool);mask-image:var(--i-tool)}
.svc__ico--update{-webkit-mask-image:var(--i-refresh);mask-image:var(--i-refresh)}
.svc__ico--shield{-webkit-mask-image:var(--i-shield);mask-image:var(--i-shield)}
.svc__card h3{font-size:17px;margin-bottom:8px}
.svc__card p{font-size:13.5px;color:var(--muted);line-height:1.65}

.faq{display:grid;grid-template-columns:300px 1fr;gap:44px;align-items:start;max-width:1080px;margin:0 auto}
.faq__side{position:sticky;top:96px}
.faq__title{font-size:24px;margin-bottom:12px}
.faq__side p{color:var(--muted);font-size:14.5px;margin-bottom:20px}
.faq__item{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:#fff;overflow:hidden;transition:all .3s var(--ease)}
.faq__item.is-open{border-color:rgba(18,160,95,.35);box-shadow:var(--shadow)}
.faq__q{display:flex;justify-content:space-between;align-items:center;width:100%;text-align:left;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink)}
.faq__q i{position:relative;flex:0 0 auto;width:18px;height:18px;margin-left:16px}
.faq__q i::before,.faq__q i::after{
  content:"";position:absolute;background:var(--green-500);border-radius:2px;transition:transform .3s var(--ease);
}
.faq__q i::before{left:0;top:8px;width:18px;height:2px}
.faq__q i::after{left:8px;top:0;width:2px;height:18px}
.faq__item.is-open .faq__q i::after{transform:scaleY(0)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq__item.is-open .faq__a{max-height:260px}
.faq__a p{padding:0 22px 20px;color:var(--muted);font-size:14.5px}

/* ---------- 联系我们 ---------- */
/* 宽度与 .container 内容区一致（1200 - 24*2），让卡片区撑满整行 */
.contact{max-width:1152px;margin:0 auto;text-align:center}
.contact__lead{max-width:620px;margin:0 auto;color:var(--muted);font-size:16px}
/* 列数 = .ci 卡片数量：新增 / 删除卡片不用改 CSS，列宽自动均分并铺满整行
   minmax(0,1fr) 保证长文本（地址）不会把列撑宽，各列始终等宽 */
.contact__grid{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);gap:18px;margin-top:32px;
  text-align:left;align-items:stretch;
}
/* 卡片改为「图标+标题 / 内容」上下两段，避免文字换行后错位 */
.ci{
  display:flex;flex-direction:column;gap:12px;padding:24px 24px 26px;border-radius:14px;background:#fff;
  border:1px solid var(--line);min-width:0;transition:all .3s var(--ease);
}
.ci:hover{border-color:rgba(18,160,95,.3);box-shadow:var(--shadow)}
.ci__head{display:flex;align-items:center;gap:12px}
.ci__ico{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;background:var(--green-500);
  -webkit-mask:var(--i-tel) center/22px 22px no-repeat;mask:var(--i-tel) center/22px 22px no-repeat;
}
.ci__ico--pin{-webkit-mask-image:var(--i-pin);mask-image:var(--i-pin)}
.ci__label{font-size:13px;font-weight:600;color:var(--ink-2);letter-spacing:.04em}
/* 内容统一缩进到与标题同一条左轴 */
.ci__body{display:flex;flex-direction:column;gap:4px;padding-left:52px}
.ci__val{display:block;font-size:19px;font-weight:700;color:var(--ink);line-height:1.5;letter-spacing:.01em}
.ci__val--sm{font-size:15px;font-weight:500;color:var(--ink-2);line-height:1.85}
.ci a.ci__val:hover{color:var(--green-600)}
.ci__note{display:block;font-style:normal;font-size:12.5px;color:var(--muted)}
/* 服务热线卡片：主联系入口，突出显示 */
.ci--cta{background:linear-gradient(135deg,#fff 0%,var(--green-050) 100%);border-color:rgba(18,160,95,.28)}
.ci--cta .ci__val{font-size:22px;color:var(--green-700);line-height:1.4}
.ci--cta:hover{border-color:var(--green-500);transform:translateY(-4px);box-shadow:var(--shadow)}

/* 微信公众号卡片：与电话 / 地址共用同一套卡片外壳 */
.ci__ico--qr{-webkit-mask-image:var(--i-qr);mask-image:var(--i-qr)}
.ci__ico--app{-webkit-mask-image:var(--i-download);mask-image:var(--i-download)}
/* 二维码可点击：整块作为下载页入口，便于电脑端用户直接跳转 */
.qr-frame--link{display:inline-block;transition:border-color .3s var(--ease),box-shadow .3s var(--ease)}
.qr-frame--link:hover{border-color:rgba(18,160,95,.45);box-shadow:var(--shadow)}
.ci__more{
  align-self:flex-start;margin-top:6px;font-size:12.5px;font-weight:600;color:var(--green-600);
  border-bottom:1px solid transparent;transition:border-color .3s var(--ease);
}
.ci__more:hover{border-bottom-color:var(--green-600)}
.qr-frame{
  position:relative;align-self:flex-start;padding:8px;margin-bottom:10px;border-radius:12px;background:#fff;
  border:1px solid var(--line);max-width:100%;
}
/* 列宽变窄时二维码自动等比收缩，始终不超出卡片内容区（上限 150px） */
.qr-frame img{width:150px;max-width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;border-radius:6px;display:block}
.qr-frame::before,.qr-frame::after{
  content:"";position:absolute;width:14px;height:14px;border:2px solid var(--green-500);
}
.qr-frame::before{left:-1px;top:-1px;border-right:0;border-bottom:0;border-radius:12px 0 0 0}
.qr-frame::after{right:-1px;bottom:-1px;border-left:0;border-top:0;border-radius:0 0 12px 0}

/* ---------- 页脚 ---------- */
.footer{background:#0C1B14;color:rgba(255,255,255,.66);padding:64px 0 0}
.footer__inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer__brand img{height:34px;width:auto;margin-bottom:16px}
.footer__brand p{font-size:14px;line-height:1.9}
.footer__col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer__col a{display:block;font-size:14px;margin-bottom:10px;transition:color .25s}
.footer__col a:hover{color:var(--green-400)}
.footer__col p{font-size:14px;margin-bottom:10px}
.footer__col em{font-style:normal;font-size:12.5px;opacity:.7}
.footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0}
.footer__bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px}

/* ---------- 悬浮工具 ---------- */
.float{position:fixed;right:18px;bottom:26px;z-index:70;display:flex;flex-direction:column;gap:10px}
.float__btn{position:relative}
.float__btn{
  display:flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:12px;
  background:#fff;box-shadow:0 8px 22px rgba(15,26,21,.16);transition:all .3s var(--ease);
}
.float__btn:hover{background:var(--green-500)}
.float__btn::before{
  content:"";width:22px;height:22px;background:var(--green-600);transition:background .3s;
  -webkit-mask:var(--i-tel) center/contain no-repeat;mask:var(--i-tel) center/contain no-repeat;
}
.float__btn:hover::before{background:#fff}
.float__btn--top::before{-webkit-mask-image:var(--i-top);mask-image:var(--i-top)}
.float__btn--top{opacity:0;pointer-events:none;transform:translateY(8px)}
.float__btn--top.is-show{opacity:1;pointer-events:auto;transform:none}

/* ---------- 灯箱 ---------- */
.lightbox{
  position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:48px 24px;background:rgba(6,14,10,.93);opacity:0;visibility:hidden;transition:all .3s var(--ease);
}
.lightbox.is-open{opacity:1;visibility:visible}
.lightbox__body{max-width:1000px;width:100%;max-height:78vh;display:flex;align-items:center;justify-content:center}
.lightbox__body img{max-width:100%;max-height:78vh;width:auto;border-radius:10px;box-shadow:var(--shadow-lg)}
.lightbox__body video{max-width:100%;max-height:78vh;width:100%;border-radius:10px;background:#000}
.lightbox__cap{margin-top:16px;color:rgba(255,255,255,.82);font-size:15px}
.lightbox__close{position:absolute;top:24px;right:28px;width:42px;height:42px;border-radius:50%;
  border:1px solid rgba(255,255,255,.35);transition:all .3s var(--ease)}
.lightbox__close:hover{background:rgba(255,255,255,.14);transform:rotate(90deg)}
.lightbox__close::before,.lightbox__close::after{
  content:"";position:absolute;left:12px;top:20px;width:18px;height:2px;border-radius:2px;background:#fff;
}
.lightbox__close::before{transform:rotate(45deg)}
.lightbox__close::after{transform:rotate(-45deg)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .grid--4{grid-template-columns:repeat(3,1fr)}
  .flow{grid-template-columns:repeat(3,1fr)}
  .footer__inner{grid-template-columns:1fr 1fr;gap:32px}
  .hero__sound{right:16px;bottom:18px;padding:7px 14px;font-size:13px}
  .hero__scroll{display:none}
}
@media (max-width:900px){
  .nav{
    position:fixed;top:0;right:0;bottom:0;width:262px;padding:96px 24px 24px;background:#fff;
    flex-direction:column;align-items:stretch;gap:4px;box-shadow:-10px 0 40px rgba(15,26,21,.16);
    transform:translateX(102%);transition:transform .38s var(--ease);
  }
  .nav.is-open{transform:none}
  .nav__link{color:var(--ink-2) !important;padding:13px 16px;border-radius:10px;font-size:16px}
  .nav__link:hover,.nav__link.is-active{background:var(--green-050);color:var(--green-600) !important}
  .nav__link::after{display:none}
  .nav__link--btn{margin:10px 0 0;text-align:center}
  .nav-toggle{display:flex}
  .about,.soft-app{grid-template-columns:1fr;gap:36px}
  /* 解决方案三卡：图标与标题同行后需要更宽的卡片，提前从 3 列降为 2 列 */
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .svc__cards--4{grid-template-columns:repeat(2,1fr)}
  .faq{grid-template-columns:1fr;gap:24px}
  .faq__side{position:static}
  .about__points{grid-template-columns:repeat(2,1fr)}
  .svc__cards{grid-template-columns:1fr 1fr}
  .cases__grid{grid-template-columns:1fr 1fr}
  /* 窄屏改回按行排布：2 列，二维码卡占满整行 */
  .contact__grid{
    grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-flow:row;grid-auto-columns:auto;gap:18px;
  }
  .ci--qr{grid-column:1 / -1}
  .ci--qr .ci__body{flex-direction:row;align-items:center;gap:22px}
  .ci--qr .ci__more{align-self:center;margin-top:0;white-space:nowrap}
  .qr-frame{margin-bottom:0}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:64px 0}
  .sec-head{margin-bottom:36px}
  .grid--4,.grid--3{grid-template-columns:repeat(2,1fr)}
  .grid--2{grid-template-columns:1fr}
  .cases__grid,.svc__cards{grid-template-columns:1fr}
  .contact__grid{grid-template-columns:minmax(0,1fr);grid-auto-flow:row;grid-auto-columns:auto}
  .ci{padding:20px 18px 22px}
  .ci__body{padding-left:44px}
  .ci--cta .ci__val{font-size:20px}
  .ci--qr .ci__body{flex-direction:column;align-items:flex-start;gap:10px}
  .qr-frame{margin-bottom:0}
  .flow{grid-template-columns:repeat(2,1fr)}
  .footer__inner{grid-template-columns:1fr}
  .hero{padding:var(--header-h) 0 0}
  .hero__inner{padding:60px 16px 92px;min-height:0}
  .hero__stats{gap:10px;margin-top:44px}
  .hero__stats li{min-width:calc(50% - 5px);padding:14px 12px}
  .hero__stats b{font-size:26px}
  .hero__actions .btn{width:100%}
  .about__img--sm{right:-8px;bottom:-16px;width:44%}
  .float{right:12px;bottom:16px;gap:8px}
  .float__btn{width:42px;height:42px}
  .lightbox{padding:70px 16px 30px}
}
@media (max-width:400px){
  .grid--4,.grid--3,.flow{grid-template-columns:1fr}
  .hero__stats li{min-width:100%}
}