/* =========================================================
   桢剧云 落地页 · styles.css
   科技极简 / 轻量化 / 专业文创风
   ========================================================= */

/* ---------- 变量 ---------- */
:root{
  --brand:#1667ff;
  --brand-d:#0b4fd6;
  --brand-2:#12c2e9;
  --brand-soft:rgba(22,103,255,.10);
  --ink:#0b1b3a;
  --ink-2:#25324d;
  --muted:#5f708c;
  --line:#e3eaf6;
  --bg:#ffffff;
  --bg-tint:#f5f8fd;
  --bg-dark:#0a1730;
  --radius:16px;
  --radius-lg:22px;
  --shadow-sm:0 2px 10px rgba(16,42,92,.06);
  --shadow:0 14px 40px rgba(16,42,92,.10);
  --shadow-lg:0 28px 70px rgba(10,32,74,.18);
  --grad:linear-gradient(120deg,#2a7bff 0%,#12c2e9 100%);
  --grad-soft:linear-gradient(120deg,rgba(42,123,255,.14),rgba(18,194,233,.10));
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:72px;
}

/* ---------- 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html:focus-within{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink-2);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
h1,h2,h3,h4,p,ul,dl,dd,dt,figure{margin:0}
ul{list-style:none;padding:0}
em,i{font-style:normal}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}
.ico{width:20px;height:20px;fill:currentColor;flex:none}
.ico--flip{transform:scaleX(-1)}
.ico--up{transform:rotate(-90deg)}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.container--narrow{max-width:900px}
.u-hide-sm{display:inline-flex}

/* ---------- 通用按钮 ---------- */
.btn{
  --btn-y:11px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:var(--btn-y) 22px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.2px;
  white-space:nowrap;cursor:pointer;position:relative;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn .ico{width:18px;height:18px}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(22,103,255,.30)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(22,103,255,.40)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.btn--ghost:hover{transform:translateY(-2px);border-color:#c9d9f5;color:var(--brand)}
.btn--line{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.42);backdrop-filter:blur(8px)}
.btn--line:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn--sm{--btn-y:8px;font-size:14px;padding:8px 16px}
.btn--lg{--btn-y:15px;font-size:16px;padding:15px 30px}
.btn--block{width:100%}
.btn[disabled],.btn.is-loading{opacity:.85;pointer-events:none}

.link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
.link .ico{transition:transform .25s var(--ease)}
.link:hover .ico{transform:translateX(4px)}

.round{
  width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
  background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.round:hover{background:var(--brand);color:#fff;border-color:transparent;transform:translateY(-2px)}

.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:80;
  height:var(--nav-h);display:flex;align-items:center;
  background:transparent;transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.nav__inner{display:flex;align-items:center;gap:28px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:none}
.brand__mark{width:38px;height:38px;display:block;flex:none;filter:drop-shadow(0 6px 14px rgba(22,103,255,.35))}
.brand__mark svg{width:100%;height:100%;display:block}
.brand__text{display:flex;flex-direction:column;line-height:1.05;font-weight:800;font-size:19px;color:#fff;letter-spacing:.5px;transition:color .3s var(--ease)}
.brand__text em{font-size:9px;font-weight:600;letter-spacing:1.6px;color:rgba(255,255,255,.6);transition:color .3s var(--ease)}

.nav__menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav__menu>a{
  padding:9px 15px;border-radius:999px;font-size:15px;font-weight:500;color:rgba(255,255,255,.86);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav__menu>a:hover{color:#fff;background:rgba(255,255,255,.14)}
.nav__menu-cta{display:none}
.nav__actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:none}

/* 滚动后：白底 + 阴影 */
.nav.is-stuck{background:rgba(255,255,255,.92);backdrop-filter:blur(14px);box-shadow:0 8px 26px rgba(16,42,92,.09);border-bottom-color:var(--line)}
.nav.is-stuck .brand__text{color:var(--ink)}
.nav.is-stuck .brand__text em{color:var(--muted)}
.nav.is-stuck .nav__menu>a{color:var(--ink-2)}
.nav.is-stuck .nav__menu>a:hover{color:var(--brand);background:var(--brand-soft)}
.nav.is-stuck .btn--line,.nav.is-stuck .btn--ghost{background:#fff}
.nav__burger{display:none;width:42px;height:42px;border-radius:12px;place-items:center;background:rgba(255,255,255,.14);color:#fff}
.nav.is-stuck .nav__burger{background:var(--bg-tint);color:var(--ink)}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:calc(var(--nav-h) + 76px) 0 0;
  background:
    radial-gradient(1100px 620px at 78% 4%,rgba(18,194,233,.30),transparent 60%),
    radial-gradient(900px 560px at 8% 10%,rgba(42,123,255,.34),transparent 62%),
    linear-gradient(160deg,#081228 0%,#0b1f47 46%,#0a1730 100%);
  color:#fff;
  min-height:100vh;display:flex;flex-direction:column;justify-content:center;
}
.hero__bg{position:absolute;inset:0;pointer-events:none}
.hero__video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.6}
.hero__veil{position:absolute;inset:0;background:radial-gradient(1100px 620px at 78% 4%,rgba(18,194,233,.30),transparent 60%),radial-gradient(900px 560px at 8% 10%,rgba(42,123,255,.34),transparent 62%),linear-gradient(160deg,rgba(8,18,40,.88),rgba(11,31,71,.70) 48%,rgba(10,23,48,.92))}
.grid-lines{
  position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 50% 35%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(70% 60% at 50% 35%,#000 30%,transparent 100%);
}
.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5}
.orb--a{width:420px;height:420px;left:-120px;top:-80px;background:#1667ff;animation:float1 16s ease-in-out infinite}
.orb--b{width:360px;height:360px;right:-90px;top:120px;background:#12c2e9;animation:float2 20s ease-in-out infinite}
.orb--c{width:300px;height:300px;left:42%;bottom:-140px;background:#5b7cff;opacity:.35;animation:float1 24s ease-in-out infinite}
.orb--d{width:460px;height:460px;left:-140px;top:-120px;background:#1667ff;opacity:.35}
.orb--e{width:380px;height:380px;right:-120px;bottom:-160px;background:#12c2e9;opacity:.3}
@keyframes float1{50%{transform:translate(40px,34px) scale(1.08)}}
@keyframes float2{50%{transform:translate(-46px,26px) scale(1.06)}}

.hero__inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding-bottom:56px}
.hero__copy{position:relative;z-index:2}
.hero__tag{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);font-size:13px;font-weight:600;letter-spacing:.4px;color:rgba(255,255,255,.92);backdrop-filter:blur(8px)}
.hero__tag .dot{width:7px;height:7px;border-radius:50%;background:#3ee08f;box-shadow:0 0 0 4px rgba(62,224,143,.22)}
.hero__title{margin:22px 0 0;font-size:clamp(30px,4.2vw,54px);line-height:1.16;font-weight:800;letter-spacing:-.5px}
.grad{background:linear-gradient(100deg,#7ec4ff,#38e0f5 55%,#a9c8ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__sub{margin-top:18px;font-size:clamp(15px,1.35vw,18px);line-height:1.8;color:rgba(255,255,255,.78);max-width:600px}
.hero__points{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:24px}
.hero__points li{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:rgba(255,255,255,.9)}
.hero__points .ico{width:17px;height:17px;color:#45e0b0}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero__note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.55)}

/* 首屏产品实图 */
.hero__visual{position:relative;perspective:1400px}
.hero__shot{
  display:block;width:100%;height:auto;border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,.24);background:#fff;box-shadow:var(--shadow-lg);
  transform:rotateY(-8deg) rotateX(4deg) translateZ(0);
  transition:transform .6s var(--ease);
}
.hero__visual:hover .hero__shot{transform:rotateY(-2deg) rotateX(1deg) translateY(-6px)}
.float-card{
  position:absolute;display:flex;align-items:center;gap:11px;padding:12px 16px;border-radius:14px;
  background:rgba(255,255,255,.96);color:var(--ink);box-shadow:var(--shadow);
  animation:floaty 5.5s ease-in-out infinite;
}
.float-card .ico{width:22px;height:22px;color:var(--brand)}
.float-card b{display:block;font-size:13.5px}
.float-card span{font-size:11.5px;color:var(--muted)}
.float-card--a{left:-26px;top:24%}
.float-card--b{right:-18px;bottom:14%;animation-delay:-2.4s}
@keyframes floaty{50%{transform:translateY(-12px)}}

/* 首屏数据条 */
.stats{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:26px 24px;margin-bottom:0}
.stats__item{text-align:center;padding:8px 4px;border-left:1px solid rgba(255,255,255,.14)}
.stats__item:first-child{border-left:0}
.stats__item b{display:block;font-size:clamp(24px,2.6vw,34px);font-weight:800;background:linear-gradient(100deg,#9ad4ff,#4ff0d0);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.stats__item span{font-size:13px;color:rgba(255,255,255,.62)}

/* ---------- 通用 section ---------- */
.section{padding:96px 0;position:relative}
.section--tint{background:var(--bg-tint)}
.section--dark{background:linear-gradient(160deg,#081228,#0b1f47 60%,#0a1730);color:#fff}
.sec-head{max-width:760px;margin:0 auto 54px;text-align:center}
.sec-kicker{font-size:12.5px;font-weight:800;letter-spacing:2.4px;color:var(--brand);text-transform:uppercase}
.sec-kicker--light{color:#7ec4ff}
.sec-title{margin-top:12px;font-size:clamp(24px,2.9vw,38px);line-height:1.28;font-weight:800;letter-spacing:-.4px;color:var(--ink)}
.sec-head--light .sec-title{color:#fff}
.sec-desc{margin-top:14px;font-size:16px;color:var(--muted)}
.sec-head--light .sec-desc{color:rgba(255,255,255,.7)}

/* ---------- 卡片：核心能力 ---------- */
.cards{display:grid;gap:22px}
.cards--5{grid-template-columns:repeat(3,1fr)}
.card{
  padding:30px 26px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.card::after{content:"";position:absolute;inset:auto -40% -60% -40%;height:170px;background:var(--grad-soft);opacity:0;transition:opacity .35s var(--ease)}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:#cfe0fb}
.card:hover::after{opacity:1}
.card__ico{
  position:relative;width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--brand);margin-bottom:18px;
}
.card__ico .ico{width:26px;height:26px}
.card h3{position:relative;font-size:19px;font-weight:800;color:var(--ink);margin-bottom:10px}
.card p{position:relative;font-size:14.6px;color:var(--muted)}

/* ---------- 功能详解 ---------- */
.feature{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;margin-bottom:76px}
.feature:last-child{margin-bottom:0}
.feature--rev .feature__media{order:2}
.feature__text h3{margin:10px 0 16px;font-size:clamp(21px,2.1vw,28px);font-weight:800;color:var(--ink);line-height:1.35}
.feature__text p{color:var(--muted);font-size:15.6px}
.feature__text .link{margin-top:20px}
.shot{
  display:block;width:100%;height:auto;border-radius:var(--radius-lg);
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.feature:hover .shot{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
/* 产品演示视频 */
.demo{position:relative;margin:0 0 68px;border-radius:var(--radius-lg);overflow:hidden;background:#0a1730;box-shadow:var(--shadow-lg)}
.demo video{display:block;width:100%;height:auto}
.demo__play{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  background:linear-gradient(180deg,rgba(6,16,36,.22),rgba(6,16,36,.72));color:#fff;
  transition:opacity .35s var(--ease);
}
.demo.is-playing .demo__play{opacity:0;pointer-events:none}
.demo__icon{
  width:80px;height:80px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.42);backdrop-filter:blur(8px);
  transition:transform .3s var(--ease),background .3s var(--ease);
}
.demo__play:hover .demo__icon{transform:scale(1.08);background:var(--grad);border-color:transparent}
.demo__icon .ico{width:34px;height:34px}
.demo__text{text-align:center}
.demo__text b{display:block;font-size:17px;font-weight:800}
.demo__text em{font-size:13px;color:rgba(255,255,255,.72)}
.demo figcaption{padding:12px 18px;font-size:12.5px;color:rgba(255,255,255,.6);background:rgba(255,255,255,.05);text-align:center}
.list{display:flex;flex-direction:column;gap:12px}
.list li{display:flex;gap:10px;align-items:flex-start;font-size:14.6px;color:var(--ink-2)}
.list .ico{width:19px;height:19px;color:var(--brand);margin-top:2px}
.list--tight{gap:9px;font-size:14px}
.bar{height:7px;border-radius:99px;background:#eaf0fb;overflow:hidden;flex:1}
.bar b{display:block;height:100%;border-radius:99px;background:var(--grad);transition:width 1.2s var(--ease)}


/* ---------- 行业解决方案 ---------- */
.solutions{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.solution{
  position:relative;padding:32px 28px;border-radius:var(--radius-lg);background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);overflow:hidden;
  display:flex;flex-direction:column;gap:16px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.solution__media{margin:-32px -28px 2px;background:#0a1730}
.solution__media img{display:block;width:100%;height:auto;aspect-ratio:1200/780;object-fit:cover;transition:transform .6s var(--ease)}
.solution:hover .solution__media img{transform:scale(1.04)}
.solution:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:#cfe0fb}
.solution--hot{background:linear-gradient(170deg,#0d2450,#0a1730);border-color:transparent;box-shadow:var(--shadow-lg)}
.solution--hot h3,.solution--hot p{color:#fff}
.solution--hot p{color:rgba(255,255,255,.75)}
.solution--hot .list li{color:rgba(255,255,255,.86)}
.solution--hot .list .ico{color:#4ff0d0}
.solution__badge{position:absolute;top:18px;right:18px;padding:5px 12px;border-radius:999px;background:var(--grad);color:#fff;font-size:11.5px;font-weight:800;letter-spacing:.4px}
.solution__tag{display:inline-block;padding:5px 13px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:700;margin-bottom:12px}
.solution--hot .solution__tag{background:rgba(255,255,255,.14);color:#8fd3ff}
.solution h3{font-size:20px;font-weight:800;color:var(--ink);line-height:1.35}
.solution p{font-size:14.6px;color:var(--muted)}
.solution .list{flex:1}
.solution .btn{align-self:flex-start;margin-top:4px}
.solution--hot .btn--primary{background:#fff;color:var(--brand-d);box-shadow:0 10px 24px rgba(0,0,0,.25)}

/* ---------- 客户案例轮播 ---------- */
.carousel{position:relative}
.carousel__viewport{overflow:hidden;border-radius:var(--radius-lg)}
.carousel__track{display:flex;transition:transform .6s var(--ease)}
.case{
  min-width:100%;display:grid;grid-template-columns:.85fr 1.15fr;gap:0;
  background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);overflow:hidden;
}
.case__media{position:relative;min-height:320px;overflow:hidden;background:#0a1730}
.case__media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.case:hover .case__media img{transform:scale(1.04)}
.case__tag{position:absolute;top:20px;left:20px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.22);backdrop-filter:blur(6px);font-size:12.5px;font-weight:700;z-index:2}
.case__media .ico--xl{position:relative;z-index:2;opacity:.95}
.case__media img{z-index:1}
.case__body{padding:38px 40px}
.case__quote{width:34px;height:34px;color:rgba(126,196,255,.7)}
.case__body h3{margin:12px 0 20px;font-size:21px;font-weight:800;color:#fff}
.case__dl{display:flex;flex-direction:column;gap:14px}
.case__dl div{display:grid;grid-template-columns:78px 1fr;gap:14px;align-items:flex-start}
.case__dl dt{font-size:12.5px;font-weight:700;color:#8fd3ff;padding-top:3px}
.case__dl dd{font-size:14.6px;color:rgba(255,255,255,.78);line-height:1.7}
.case__kpis{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.case__kpis li{padding:12px 20px;border-radius:14px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);text-align:center;flex:1;min-width:104px}
.case__kpis b{display:block;font-size:22px;font-weight:800;background:linear-gradient(100deg,#8fd3ff,#4ff0d0);-webkit-background-clip:text;background-clip:text;color:transparent}
.case__kpis span{font-size:12px;color:rgba(255,255,255,.62)}
.carousel__ctrl{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:28px}
.carousel__dots{display:flex;gap:9px}
.carousel__dots button{width:9px;height:9px;border-radius:99px;background:rgba(255,255,255,.28);transition:.3s var(--ease)}
.carousel__dots button.is-active{width:30px;background:var(--grad)}
.round--pause{width:38px;height:38px}
.carousel.is-paused .round--pause{color:var(--brand);border-color:#cfe0fb}
.section--dark .round{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.2);box-shadow:none}
.section--dark .round:hover{background:#fff;color:var(--ink)}

/* ---------- 平台优势 ---------- */
.adv{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.adv__item{
  padding:30px 26px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);transition:transform .3s var(--ease),box-shadow .3s var(--ease)
}
.adv__item:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.adv__ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--grad);color:#fff;margin-bottom:16px;box-shadow:0 10px 22px rgba(22,103,255,.28)}
.adv__ico .ico{width:24px;height:24px}
.adv__item h3{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:9px}
.adv__item p{font-size:14.4px;color:var(--muted)}
.adv__num{display:block;margin-top:16px;font-size:22px;font-weight:800;color:var(--brand)}
.adv__num em{font-size:12.5px;font-weight:600;color:var(--muted);margin-left:6px}

/* ---------- 资质背书 ---------- */
.trust{display:grid;grid-template-columns:1fr 1.15fr;gap:52px;align-items:start}
.trust__col{display:flex;flex-direction:column;gap:14px}
.cred{display:flex;gap:14px;align-items:center;padding:18px 20px;border-radius:14px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:.28s var(--ease)}
.cred:hover{transform:translateX(6px);border-color:#cfe0fb}
.cred .ico{width:24px;height:24px;color:var(--brand);flex:none}
.cred b{display:block;font-size:15px;color:var(--ink)}
.cred span{font-size:12.8px;color:var(--muted)}
.trust__label{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.4px}
.logos{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.logos span{
  display:grid;place-items:center;height:58px;border-radius:12px;background:#fff;border:1px solid var(--line);
  font-size:13.5px;font-weight:700;color:#7b8aa6;letter-spacing:.3px;box-shadow:var(--shadow-sm);
  transition:.28s var(--ease)
}
.logos span:hover{color:var(--brand);border-color:#cfe0fb;transform:translateY(-3px)}
.trust__note{font-size:12px;color:#93a2bd}
.bars{display:flex;flex-direction:column;gap:14px}
.bar-row{display:grid;grid-template-columns:104px 1fr 74px;gap:12px;align-items:center;font-size:13px;color:var(--muted)}
.bar-row em{font-style:normal;font-weight:700;color:var(--brand);text-align:right;font-size:12.5px}

/* ---------- 留资 CTA ---------- */
.cta{position:relative;overflow:hidden;padding:96px 0;background:linear-gradient(155deg,#081428,#0b2350 55%,#0a1730);color:#fff}
.cta__bg{position:absolute;inset:0;pointer-events:none}
.cta__inner{position:relative;display:grid;grid-template-columns:1fr 460px;gap:56px;align-items:center}
.cta__copy h2{margin:12px 0 16px;font-size:clamp(26px,3.1vw,40px);line-height:1.28;font-weight:800;letter-spacing:-.4px}
.cta__copy>p{color:rgba(255,255,255,.76);font-size:16px}
.cta__list{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta__list li{display:flex;gap:10px;align-items:center;font-size:14.8px;color:rgba(255,255,255,.86)}
.cta__list .ico{width:19px;height:19px;color:#4ff0d0}

.form{
  padding:32px 30px;border-radius:var(--radius-lg);
  background:rgba(255,255,255,.97);box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.5);
}
.form__title{font-size:20px;font-weight:800;color:var(--ink);margin-bottom:20px}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:15px}
.field label{font-size:13.5px;font-weight:700;color:var(--ink)}
.field label i{color:#e5484d}
.field .opt{font-weight:500;color:#93a2bd;font-size:12px}
.field input,.field select{
  height:46px;padding:0 14px;border-radius:11px;border:1px solid var(--line);background:#fbfcff;
  font-size:14.6px;color:var(--ink);transition:.22s var(--ease);width:100%;
  font-family:inherit;appearance:none;
}
.field select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%235f708c'%3E%3Cpath d='M12 15.4 5.6 9l1.4-1.4 5 5 5-5L18.4 9 12 15.4Z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:18px;padding-right:38px}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(22,103,255,.12)}
.field.has-error input,.field.has-error select{border-color:#e5484d;background:#fff6f6;box-shadow:0 0 0 4px rgba(229,72,77,.10)}
.err{min-height:16px;font-size:12.2px;color:#e5484d;font-weight:600}
.form .btn--block{margin-top:8px}
.form__tip{margin-top:12px;font-size:12px;color:#93a2bd;text-align:center;line-height:1.6}
.form__error{margin:12px 0 0;font-size:13px;font-weight:600;color:#e5484d;text-align:center;line-height:1.6}
.spinner{display:none;width:17px;height:17px;border-radius:50%;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .7s linear infinite}
.btn.is-loading .spinner{display:block}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq__item{border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden;transition:.3s var(--ease);box-shadow:var(--shadow-sm)}
.faq__item.is-open{border-color:#c9dcfb;box-shadow:var(--shadow)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;font-size:16px;font-weight:700;color:var(--ink);text-align:left;
  transition:color .22s var(--ease)
}
.faq__q:hover{color:var(--brand)}
.faq__q .ico{width:22px;height:22px;color:var(--muted);transition:transform .35s var(--ease),color .3s var(--ease)}
.faq__item.is-open .faq__q .ico{transform:rotate(180deg);color:var(--brand)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .42s var(--ease)}
.faq__a p{padding:0 22px 20px;font-size:14.8px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.footer{background:#071224;color:rgba(255,255,255,.72);padding:70px 0 26px}
.footer__top{display:grid;grid-template-columns:1.5fr 1.6fr .8fr;gap:48px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.10)}
.brand--footer .brand__text{color:#fff}
.brand--footer .brand__text em{color:rgba(255,255,255,.5)}
.footer__brand p{margin-top:18px;font-size:13.8px;line-height:1.85;max-width:420px}
.footer__contact{margin-top:20px;display:flex;flex-direction:column;gap:10px;font-size:13.6px}
.footer__contact span{display:inline-flex;align-items:center;gap:9px}
.footer__contact .ico{width:17px;height:17px;color:#7ec4ff}
.footer__nav{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer__nav h4{font-size:14.5px;font-weight:800;color:#fff;margin-bottom:14px}
.footer__nav a{display:block;font-size:13.6px;padding:5px 0;color:rgba(255,255,255,.66);transition:.22s var(--ease)}
.footer__nav a:hover{color:#7ec4ff;transform:translateX(3px)}
.footer__qr{text-align:center}
.qr{width:112px;height:112px;margin:0 auto;padding:8px;border-radius:14px;background:#fff;box-shadow:0 12px 28px rgba(0,0,0,.3)}
.qr svg{width:100%;height:100%;display:block}
.footer__qr p{margin-top:12px;font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.7)}
.footer__qr p span{color:rgba(255,255,255,.45)}
.footer__bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;padding-top:22px;font-size:13px;color:rgba(255,255,255,.55)}
.footer__links{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.footer__links a:hover{color:#7ec4ff}
.beian{color:rgba(255,255,255,.4)}

/* ---------- 返回顶部 & 弹窗 ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:70;width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;background:#fff;color:var(--brand);border:1px solid var(--line);
  box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(14px);
  transition:.32s var(--ease)
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--brand);color:#fff;border-color:transparent}

.modal{position:fixed;inset:0;z-index:120;display:grid;place-items:center;padding:24px}
.modal[hidden]{display:none}
.modal__mask{position:absolute;inset:0;z-index:0;background:rgba(6,16,36,.6);backdrop-filter:blur(4px);animation:fade .3s var(--ease)}
.modal__box{
  position:relative;z-index:1;width:100%;max-width:400px;padding:36px 30px;border-radius:var(--radius-lg);
  background:#fff;text-align:center;box-shadow:var(--shadow-lg);animation:pop .34s var(--ease)
}
@keyframes fade{from{opacity:0}}
@keyframes pop{from{opacity:0;transform:translateY(18px) scale(.96)}}
.modal__ico{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;margin:0 auto 18px;background:linear-gradient(135deg,#18c57c,#0e9a5f);color:#fff;box-shadow:0 12px 28px rgba(24,197,124,.35)}
.modal__ico .ico{width:32px;height:32px}
.modal__box h3{font-size:21px;font-weight:800;color:var(--ink);margin-bottom:10px}
.modal__box p{font-size:14.6px;color:var(--muted)}
.modal__box p b{color:var(--brand)}
.modal__btns{display:flex;gap:12px;justify-content:center;margin-top:24px;flex-wrap:wrap}
.modal__btns .btn{min-width:132px}

/* ---------- 滚动渐入 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--d,0s)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .orb,.float-card{animation:none!important}
  html:focus-within{scroll-behavior:auto}
}

/* =========================================================
   自适应
   ========================================================= */
@media (max-width:1100px){
  .cards--5{grid-template-columns:repeat(2,1fr)}
  .adv{grid-template-columns:repeat(2,1fr)}
  .hero__inner{grid-template-columns:1fr;gap:46px;text-align:left}
  .hero__visual{max-width:640px}
  .cta__inner{grid-template-columns:1fr;gap:40px}
  .trust{grid-template-columns:1fr;gap:34px}
  .case{grid-template-columns:1fr}
  .case__media{min-height:190px}
  .footer__top{grid-template-columns:1fr 1fr;gap:34px}
  .footer__qr{text-align:left;grid-column:1/-1}
  .qr{margin:0}
}
@media (max-width:900px){
  .nav__menu{
    position:fixed;top:var(--nav-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;margin:0;padding:16px 20px 22px;
    background:rgba(255,255,255,.98);backdrop-filter:blur(14px);
    box-shadow:0 20px 40px rgba(16,42,92,.14);border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:.28s var(--ease);
    max-height:calc(100vh - var(--nav-h));overflow-y:auto;
  }
  .nav__menu.is-open{transform:none;opacity:1;visibility:visible}
  .nav__menu>a{padding:13px 10px;border-radius:10px;color:var(--ink-2);font-size:15.5px;border-bottom:1px solid var(--line)}
  .nav__menu>a:hover{background:var(--brand-soft)}
  .nav.is-stuck .nav__menu>a,.nav__menu>a{color:var(--ink-2)}
  .nav__menu>a:hover,.nav.is-stuck .nav__menu>a:hover{color:var(--brand)}
  .nav__menu-cta{display:flex;gap:10px;padding-top:14px}
  .nav__menu-cta .btn{flex:1}
  .nav__burger{display:grid}
  .nav__actions{margin-left:auto}
  .u-hide-sm{display:none}
  .feature,.feature--rev{grid-template-columns:1fr;gap:28px;margin-bottom:60px}
  .feature--rev .feature__media{order:0}
  .solutions{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:22px}
  .stats__item{border-left:0;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:16px}
  .stats__item:nth-last-child(-n+2){border-bottom:0}
}
@media (max-width:680px){
  :root{--nav-h:64px}
  .container{padding:0 18px}
  .section{padding:66px 0}
  .hero{padding-top:calc(var(--nav-h) + 52px)}
  .cards--5,.adv{grid-template-columns:1fr}
  .hero__cta .btn{width:100%}
  .hero__visual{max-width:100%}
  .hero__shot{transform:none!important}
  .float-card{display:none}
  .logos{grid-template-columns:repeat(2,1fr)}
  .case__body{padding:26px 22px}
  .case__dl div{grid-template-columns:1fr;gap:4px}
  .case__kpis li{min-width:0}
  .form{padding:26px 20px}
  .footer__top{grid-template-columns:1fr}
  .footer__nav{grid-template-columns:1fr 1fr}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .footer__links{gap:14px}
  .to-top{right:14px;bottom:16px;width:42px;height:42px}
  .sec-head{margin-bottom:38px}
  .bar-row{grid-template-columns:88px 1fr 62px;font-size:12.4px}
}