/* ===================================================================
   北京蓝色领域科技有限公司 — 站点样式
   设计语言：深色基底 / 蓝色主色 / 大图大字 / 留白 / 滚动动效
   =================================================================== */

:root{
  --blue:        #0a66ff;
  --blue-deep:   #003fb3;
  --blue-glow:   #2f8bff;
  --ink:         #0b1220;   /* 近黑主色 */
  --ink-2:       #121a2b;
  --paper:       #ffffff;
  --paper-2:     #f4f7fc;
  --gray:        #5b6678;
  --line:        rgba(10,18,32,.10);
  --radius:      16px;
  --maxw:        1200px;
  --ease:        cubic-bezier(.22,.61,.36,1);
  --font: "PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--paper);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ---------- 通用排版 ---------- */
.section{padding:120px 0;position:relative}
.kicker{
  font-size:13px;letter-spacing:.22em;font-weight:700;
  color:var(--blue);margin-bottom:18px;text-transform:uppercase;
}
.kicker.light{color:var(--blue-glow)}
.h2{font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.01em}
.h2.light{color:#fff}
.lead{font-size:18px;color:#2a3446;margin:22px 0;max-width:560px}
.muted{color:var(--gray)}
.muted.light{color:rgba(255,255,255,.62)}
.light{color:#fff}
.section__head{margin-bottom:60px;max-width:680px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 30px;border-radius:999px;font-weight:700;font-size:15px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s;
  cursor:pointer;border:1px solid transparent;white-space:nowrap;
}
.btn--primary{background:var(--blue);color:#fff;box-shadow:0 10px 30px -8px rgba(10,102,255,.6)}
.btn--primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px -10px rgba(10,102,255,.75);background:var(--blue-glow)}
.btn--ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn--ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-3px)}
.btn--full{width:100%}

/* ===================================================================
   导航
   =================================================================== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .4s var(--ease),box-shadow .4s,backdrop-filter .4s;
}
.nav__inner{
  max-width:var(--maxw);margin:0 auto;padding:0 28px;height:76px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav__logo{display:flex;align-items:center;gap:11px}
.nav__mark{
  width:30px;height:30px;border-radius:8px;flex:none;
  background:conic-gradient(from 200deg,var(--blue),var(--blue-glow),var(--blue-deep));
  position:relative;box-shadow:0 4px 14px -3px rgba(10,102,255,.6);
}
.nav__mark::after{content:"";position:absolute;inset:0;display:grid;place-items:center;
  background:no-repeat center/16px url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 3 L21 19 L3 19 Z' fill='white' opacity='.92'/%3E%3C/svg%3E")}
.nav__name{color:#fff;font-weight:800;font-size:18px;line-height:1;letter-spacing:.02em;display:flex;flex-direction:column;gap:3px;transition:color .4s}
.nav__name i{font-style:normal;font-size:9px;letter-spacing:.28em;font-weight:600;opacity:.6}
.nav__menu{display:flex;align-items:center;gap:34px}
.nav__menu a{color:rgba(255,255,255,.82);font-size:15px;font-weight:500;transition:color .25s;position:relative}
.nav__menu a:not(.nav__cta):not(.nav__console)::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--blue-glow);transition:width .3s var(--ease)}
.nav__menu a:not(.nav__cta):not(.nav__console):hover::after{width:100%}
.nav__menu a:hover{color:#fff}
.nav__cta{padding:9px 20px;border-radius:999px;background:var(--blue);color:#fff!important;font-weight:700}
.nav__cta:hover{background:var(--blue-glow)}
.nav__console{padding:8px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.35);font-weight:600}
.nav__console:hover{border-color:var(--blue-glow);color:#fff!important}
.nav.scrolled .nav__console{border-color:rgba(10,102,255,.4)}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav__toggle span{width:24px;height:2px;background:#fff;transition:.3s;border-radius:2px}

/* 滚动后 */
.nav.scrolled{background:rgba(255,255,255,.86);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line)}
.nav.scrolled .nav__name{color:var(--ink)}
.nav.scrolled .nav__menu a{color:#3a4456}
.nav.scrolled .nav__menu a:hover{color:var(--blue)}
.nav.scrolled .nav__cta{color:#fff!important}
.nav.scrolled .nav__toggle span{background:var(--ink)}

/* ===================================================================
   首屏 HERO
   =================================================================== */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  background:var(--ink);color:#fff;overflow:hidden;padding:120px 0 0}
.hero__bg{position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(1100px 600px at 78% 12%,rgba(10,102,255,.55),transparent 60%),
    radial-gradient(900px 700px at 12% 88%,rgba(0,63,179,.45),transparent 62%),
    linear-gradient(160deg,#070d18 0%,#0b1220 45%,#0a1730 100%);
}
.hero__grid{position:absolute;inset:0;z-index:1;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 30%,transparent 80%);
  mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 30%,transparent 80%);
  transform:perspective(600px) rotateX(2deg);
}
.hero__inner{position:relative;z-index:3;max-width:var(--maxw);margin:0 auto;padding:0 28px;width:100%}
.hero__eyebrow{font-size:14px;letter-spacing:.18em;color:var(--blue-glow);font-weight:700;margin-bottom:22px;
  opacity:0;transform:translateY(20px);animation:rise .8s .15s var(--ease) forwards}
.hero__title{font-size:clamp(46px,8vw,104px);line-height:1.02;font-weight:900;letter-spacing:-.02em;
  background:linear-gradient(180deg,#fff 30%,#bcd4ff);-webkit-background-clip:text;background-clip:text;color:transparent;
  opacity:0;transform:translateY(26px);animation:rise .9s .3s var(--ease) forwards}
.hero__sub{font-size:clamp(15px,1.6vw,19px);color:rgba(255,255,255,.7);margin:30px 0 40px;line-height:1.75;
  opacity:0;transform:translateY(20px);animation:rise .9s .5s var(--ease) forwards}
.hero__actions{display:flex;gap:16px;flex-wrap:wrap;
  opacity:0;transform:translateY(20px);animation:rise .9s .68s var(--ease) forwards}
.hero__stats{position:relative;z-index:3;max-width:var(--maxw);margin:90px auto 0;padding:30px 28px 40px;width:100%;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;border-top:1px solid rgba(255,255,255,.12);
  opacity:0;animation:fade 1s 1s var(--ease) forwards}
.hero__stats b{display:block;font-size:clamp(30px,4vw,46px);font-weight:800;color:#fff;line-height:1}
.hero__stats span{font-size:13px;color:rgba(255,255,255,.55);margin-top:8px;display:block}
.hero__scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:3;
  width:26px;height:42px;border:2px solid rgba(255,255,255,.4);border-radius:14px;display:none}
.hero__scroll span{position:absolute;top:8px;left:50%;width:4px;height:8px;background:#fff;border-radius:2px;margin-left:-2px;animation:scroll 1.6s infinite}
@media(min-height:760px){.hero__scroll{display:block}}

@keyframes rise{to{opacity:1;transform:translateY(0)}}
@keyframes fade{to{opacity:1}}
@keyframes scroll{0%{opacity:0;top:7px}40%{opacity:1}80%{opacity:0;top:22px}100%{opacity:0}}

/* ===================================================================
   关于
   =================================================================== */
.about{background:var(--paper)}
.about__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:80px;align-items:center}
.about__pills{list-style:none;display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.about__pills li{padding:9px 18px;background:var(--paper-2);border:1px solid var(--line);border-radius:999px;font-size:14px;font-weight:600;color:#33405a}
.about__visual{display:flex;justify-content:center;align-items:center;min-height:380px}
.globe{position:relative;width:320px;height:320px}
.globe__core{position:absolute;inset:90px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,var(--blue-glow),var(--blue) 50%,var(--blue-deep));
  box-shadow:0 0 70px -6px rgba(10,102,255,.6),inset -14px -14px 40px rgba(0,0,0,.35)}
.globe__ring{position:absolute;inset:0;border:1.5px solid rgba(10,102,255,.35);border-radius:50%;
  transform:rotateX(72deg);animation:spin 14s linear infinite}
.globe__ring--2{inset:46px;border-color:rgba(47,139,255,.4);transform:rotateX(72deg) rotateZ(60deg);animation-duration:9s;animation-direction:reverse}
.globe__dot{position:absolute;top:50%;left:50%;width:12px;height:12px;border-radius:50%;background:var(--blue-glow);
  box-shadow:0 0 16px var(--blue-glow);transform:rotate(var(--a)) translateX(160px);animation:orbit 11s linear infinite}
@keyframes spin{to{transform:rotateX(72deg) rotateZ(360deg)}}
@keyframes orbit{to{transform:rotate(calc(var(--a) + 360deg)) translateX(160px)}}

/* ===================================================================
   核心业务
   =================================================================== */
.services{background:var(--paper-2)}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;
  transition:transform .4s var(--ease),box-shadow .4s,border-color .4s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--blue-glow));transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.card:hover{transform:translateY(-8px);box-shadow:0 26px 50px -18px rgba(10,40,90,.28);border-color:transparent}
.card:hover::before{transform:scaleX(1)}
.card__icon{width:58px;height:58px;border-radius:14px;display:grid;place-items:center;font-size:26px;color:#fff;
  background:linear-gradient(140deg,var(--blue),var(--blue-deep));margin-bottom:22px;box-shadow:0 10px 22px -8px rgba(10,102,255,.6)}
.card h3{font-size:20px;font-weight:800;margin-bottom:12px}
.card p{color:var(--gray);font-size:15px;line-height:1.7;margin-bottom:18px}
.card__tag{font-size:12.5px;color:var(--blue);font-weight:600;letter-spacing:.02em}

/* ===================================================================
   行业方案
   =================================================================== */
.solutions{background:var(--ink);position:relative;overflow:hidden}
.solutions::before{content:"";position:absolute;top:-20%;right:-10%;width:600px;height:600px;border-radius:50%;
  background:radial-gradient(circle,rgba(10,102,255,.3),transparent 65%)}
.solgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;position:relative}
.sol{padding:38px 32px;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);
  background:rgba(255,255,255,.03);transition:.4s var(--ease);position:relative;overflow:hidden}
.sol span{font-size:13px;font-weight:800;color:var(--blue-glow);letter-spacing:.1em}
.sol h3{color:#fff;font-size:22px;font-weight:800;margin:14px 0 10px}
.sol p{color:rgba(255,255,255,.6);font-size:14.5px}
.sol::after{content:"";position:absolute;inset:0;background:linear-gradient(140deg,rgba(10,102,255,.22),transparent 60%);opacity:0;transition:.4s}
.sol:hover{transform:translateY(-6px);border-color:rgba(47,139,255,.5);background:rgba(255,255,255,.05)}
.sol:hover::after{opacity:1}

/* ===================================================================
   技术流程
   =================================================================== */
.workflow{background:var(--paper)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;position:relative}
.steps::before{content:"";position:absolute;top:34px;left:8%;right:8%;height:2px;
  background:repeating-linear-gradient(90deg,var(--line) 0 8px,transparent 8px 16px)}
.step{text-align:center;position:relative;padding:0 8px}
.step b{display:grid;place-items:center;width:68px;height:68px;margin:0 auto 20px;border-radius:50%;
  background:#fff;border:2px solid var(--blue);color:var(--blue);font-size:20px;font-weight:800;position:relative;z-index:2;
  transition:.4s var(--ease)}
.step:hover b{background:var(--blue);color:#fff;transform:scale(1.08);box-shadow:0 12px 28px -8px rgba(10,102,255,.6)}
.step h4{font-size:17px;font-weight:800;margin-bottom:6px}
.step p{font-size:13.5px;color:var(--gray)}

/* ===================================================================
   案例展示
   =================================================================== */
.cases{background:var(--paper-2)}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:230px;gap:18px}
.shot{position:relative;border-radius:var(--radius);overflow:hidden;cursor:pointer;display:block}
.shot--lg{grid-column:span 2;grid-row:span 2}
.shot--wide{grid-column:span 2}
.shot__bg{position:absolute;inset:0;transition:transform .7s var(--ease)}
.shot:hover .shot__bg{transform:scale(1.08)}
.shot::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(6,12,24,.82),transparent 55%)}
.shot__info{position:absolute;left:24px;bottom:22px;z-index:2;color:#fff}
.shot__info span{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--blue-glow)}
.shot__info h3{font-size:19px;font-weight:800;margin-top:4px}
.shot--lg .shot__info h3{font-size:26px}
/* 渐变占位图（模拟实景三维截图） */
.g1{background:linear-gradient(135deg,#0a2a6b,#0a66ff 60%,#2f8bff);position:relative}
.g2{background:linear-gradient(135deg,#0e3a2e,#119e6e)}
.g3{background:linear-gradient(135deg,#3a2a0e,#d98a17)}
.g4{background:linear-gradient(135deg,#3a0e2e,#b51772)}
.g5{background:linear-gradient(135deg,#0a1b3a,#155fa8 60%,#2f8bff)}
.shot__bg::before{content:"";position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:34px 34px;-webkit-mask-image:linear-gradient(160deg,#000,transparent 70%);mask-image:linear-gradient(160deg,#000,transparent 70%)}

/* ===================================================================
   联系
   =================================================================== */
.contact{background:linear-gradient(160deg,#0b1220,#0a1730)}
.contact__grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.contact__info{list-style:none;margin-top:34px;display:flex;flex-direction:column;gap:16px}
.contact__info li{color:rgba(255,255,255,.85);font-size:15px;display:flex;gap:16px;align-items:center}
.contact__info i{font-style:normal;font-size:12px;color:var(--blue-glow);font-weight:700;width:42px;flex:none;letter-spacing:.1em}
.contact__form{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:38px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:8px;font-weight:600}
.field input,.field select,.field textarea{width:100%;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);
  border-radius:10px;padding:13px 15px;color:#fff;font-size:15px;font-family:inherit;transition:.25s;resize:none}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.35)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue-glow);background:rgba(255,255,255,.09)}
.field select option{color:#000}
.form__hint{font-size:13.5px;color:var(--blue-glow);margin-top:14px;min-height:18px;text-align:center}

/* ===================================================================
   页脚
   =================================================================== */
.footer{background:#070d18;color:#fff;padding:60px 0 0}
.footer__inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:30px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer__brand{display:flex;align-items:center;gap:14px}
.footer__brand b{font-size:16px;font-weight:800;display:block}
.footer__brand i{font-style:normal;font-size:10px;letter-spacing:.16em;color:rgba(255,255,255,.45)}
.footer__links{display:flex;gap:28px;flex-wrap:wrap}
.footer__links a{color:rgba(255,255,255,.65);font-size:14.5px;transition:.25s}
.footer__links a:hover{color:#fff}
.footer__bar{max-width:var(--maxw);margin:0 auto;padding:22px 28px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:rgba(255,255,255,.4)}

/* ===================================================================
   滚动揭示动画
   =================================================================== */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.sol.reveal{transition-delay:calc(var(--i) * .07s)}

/* ===================================================================
   响应式
   =================================================================== */
@media(max-width:1024px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .about__grid{gap:50px}
}
@media(max-width:860px){
  .section{padding:84px 0}
  .nav__menu{position:fixed;inset:76px 0 auto 0;flex-direction:column;background:rgba(8,14,26,.97);
    backdrop-filter:blur(14px);padding:24px 28px 34px;gap:6px;
    transform:translateY(-130%);transition:transform .45s var(--ease);align-items:stretch;border-top:1px solid rgba(255,255,255,.08)}
  .nav__menu.open{transform:translateY(0)}
  .nav__menu a{color:#fff;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav__menu a:not(.nav__cta)::after{display:none}
  .nav__cta{text-align:center;margin-top:10px}
  .nav__toggle{display:flex}
  .nav.scrolled .nav__menu a{color:#fff}
  .nav__open .nav__toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav__open .nav__toggle span:nth-child(2){opacity:0}
  .nav__open .nav__toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .about__grid,.contact__grid{grid-template-columns:1fr}
  .about__visual{order:-1}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:26px}
  .solgrid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:30px}
  .steps::before{display:none}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:200px}
  .shot--lg{grid-column:span 2;grid-row:span 1}
}
@media(max-width:560px){
  .cards,.solgrid,.gallery{grid-template-columns:1fr}
  .shot--lg,.shot--wide{grid-column:span 1}
  .hero__stats{grid-template-columns:repeat(2,1fr)}
  .container,.nav__inner,.hero__inner{padding-left:20px;padding-right:20px}
  .contact__form{padding:26px}
}

/* ===================================================================
   产品矩阵
   =================================================================== */
.products{background:var(--paper)}
.pmatrix{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .4s var(--ease),box-shadow .4s,border-color .4s}
.pcard:hover{transform:translateY(-8px);box-shadow:0 30px 60px -22px rgba(10,40,90,.32);border-color:transparent}
.pcard__visual{height:188px;position:relative;overflow:hidden}
.pcard__visual::before{content:"";position:absolute;inset:0;opacity:.45;
  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:30px 30px;-webkit-mask-image:linear-gradient(150deg,#000,transparent 75%);mask-image:linear-gradient(150deg,#000,transparent 75%)}
.pv1{background:linear-gradient(140deg,#0a2a6b,#0a66ff 60%,#2f8bff)}
.pv2{background:linear-gradient(140deg,#0a1b3a,#155fa8 60%,#2f8bff)}
.pv3{background:linear-gradient(140deg,#0e2740,#0a66ff 70%,#5aa0ff)}
.pcard__badge{position:absolute;top:16px;left:16px;z-index:2;background:#fff;color:var(--blue);
  font-size:12px;font-weight:800;padding:4px 12px;border-radius:999px;letter-spacing:.04em}
.pcard__body{padding:28px 28px 30px;display:flex;flex-direction:column;flex:1}
.pcard__body h3{font-size:21px;font-weight:800;margin-bottom:12px}
.pcard__body>p{color:var(--gray);font-size:14.5px;line-height:1.7;margin-bottom:18px}
.pcard__feat{list-style:none;margin-bottom:22px;display:flex;flex-direction:column;gap:9px}
.pcard__feat li{font-size:14px;color:#33405a;padding-left:24px;position:relative}
.pcard__feat li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:800}
.pcard__link{margin-top:auto;color:var(--blue);font-weight:700;font-size:15px;transition:.25s}
.pcard__link:hover{color:var(--blue-glow);letter-spacing:.02em}

/* ===================================================================
   定价套餐
   =================================================================== */
.pricing{background:var(--paper-2)}
.ptiers{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:1000px;margin:0 auto;align-items:stretch}
.ptier{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:38px 30px;
  display:flex;flex-direction:column;position:relative;transition:transform .4s var(--ease),box-shadow .4s}
.ptier:hover{transform:translateY(-6px);box-shadow:0 26px 50px -20px rgba(10,40,90,.25)}
.ptier--featured{border:2px solid var(--blue);box-shadow:0 30px 60px -22px rgba(10,102,255,.4)}
.ptier__tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--blue);color:#fff;
  font-size:12px;font-weight:800;padding:5px 16px;border-radius:999px;white-space:nowrap}
.ptier__name{font-size:18px;font-weight:800;color:#33405a}
.ptier__price{margin:16px 0 6px;display:flex;align-items:baseline;gap:6px}
.ptier__price b{font-size:46px;font-weight:900;letter-spacing:-.02em;color:var(--ink)}
.ptier__price span{font-size:15px;color:var(--gray)}
.ptier__desc{font-size:13.5px;color:var(--gray);margin-bottom:24px;min-height:20px}
.ptier__list{list-style:none;display:flex;flex-direction:column;gap:12px;margin-bottom:30px;flex:1}
.ptier__list li{font-size:14.5px;color:#33405a;padding-left:26px;position:relative}
.ptier__list li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:800}

/* ===================================================================
   下载
   =================================================================== */
.download{background:var(--ink);position:relative;overflow:hidden}
.download::before{content:"";position:absolute;bottom:-30%;left:-8%;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(10,102,255,.28),transparent 65%)}
.dlgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative;max-width:920px;margin:0 auto}
.dlbox{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);
  padding:36px 30px;text-align:center;transition:.4s var(--ease);display:block}
.dlbox:hover{transform:translateY(-6px);border-color:rgba(47,139,255,.55);background:rgba(255,255,255,.07)}
.dlbox__os{font-size:22px;font-weight:800;color:#fff;margin-bottom:8px}
.dlbox__ver{font-size:13px;color:rgba(255,255,255,.55);margin-bottom:22px}
.dlbox__btn{display:inline-flex;align-items:center;height:42px;padding:0 24px;border-radius:999px;
  background:var(--blue);color:#fff;font-weight:700;font-size:14px;transition:.3s}
.dlbox:hover .dlbox__btn{background:var(--blue-glow)}

/* ===================================================================
   开始使用 CTA 条
   =================================================================== */
.cta-band{background:linear-gradient(120deg,var(--blue-deep),var(--blue) 55%,var(--blue-glow));padding:80px 0}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band__actions{display:flex;gap:16px;flex-wrap:wrap}
.cta-band .btn--primary{background:#fff;color:var(--blue);box-shadow:0 12px 30px -8px rgba(0,0,0,.3)}
.cta-band .btn--primary:hover{background:#eef4ff}

/* ===================================================================
   页脚（多列）
   =================================================================== */
.footer__top{display:flex;justify-content:space-between;gap:50px;padding:64px 0 44px;flex-wrap:wrap}
.footer__brandcol{max-width:300px}
.footer__slogan{color:rgba(255,255,255,.5);font-size:14px;margin-top:18px}
.footer__cols{display:flex;gap:56px;flex-wrap:wrap}
.footer__col h4{font-size:14px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer__col a{display:block;color:rgba(255,255,255,.6);font-size:14px;line-height:2.1;transition:.25s}
.footer__col a:hover{color:#fff}

@media(max-width:1024px){
  .pmatrix{grid-template-columns:1fr}
  .footer__top{gap:36px}
  .footer__cols{gap:40px}
}
@media(max-width:860px){
  .ptiers{grid-template-columns:1fr;max-width:420px}
  .dlgrid{grid-template-columns:1fr;max-width:420px}
  .cta-band__inner{flex-direction:column;align-items:flex-start}
}

/* ===================================================================
   多页：内页页头 + 导航当前态
   =================================================================== */
.nav__menu a.is-current{color:#fff}
.nav__menu a.is-current::after{width:100%}
.nav.scrolled .nav__menu a.is-current{color:var(--blue)}
.nav.scrolled .nav__menu a.is-current::after{background:var(--blue)}

.page-hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;
  padding:170px 0 86px;text-align:center}
.page-hero__bg{position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(900px 460px at 78% 8%,rgba(10,102,255,.5),transparent 60%),
    radial-gradient(700px 520px at 10% 96%,rgba(0,63,179,.42),transparent 62%),
    linear-gradient(160deg,#070d18 0%,#0b1220 50%,#0a1730 100%)}
.page-hero__grid{position:absolute;inset:0;z-index:1;opacity:.45;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:50px 50px;
  -webkit-mask-image:radial-gradient(ellipse 75% 80% at 50% 30%,#000 30%,transparent 80%);
  mask-image:radial-gradient(ellipse 75% 80% at 50% 30%,#000 30%,transparent 80%)}
.page-hero__inner{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.page-hero h1{font-size:clamp(32px,5vw,58px);font-weight:900;line-height:1.1;letter-spacing:-.01em;
  background:linear-gradient(180deg,#fff 35%,#bcd4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{font-size:clamp(15px,1.5vw,18px);color:rgba(255,255,255,.66);margin-top:18px}
.page-hero__crumb{font-size:13px;letter-spacing:.16em;color:var(--blue-glow);font-weight:700;margin-bottom:20px;text-transform:uppercase}

/* 内页首个 section 顶部留白略减（紧接页头） */
.page-body .section:first-of-type{padding-top:96px}

/* ===================================================================
   多页内页：浅底变体
   =================================================================== */
/* 行业方案 浅底卡片 */
.sol--light{background:#fff;border:1px solid var(--line)}
.sol--light h3{color:var(--ink)}
.sol--light p{color:var(--gray)}
.sol--light:hover{border-color:rgba(10,102,255,.4);background:#fff;box-shadow:0 22px 44px -20px rgba(10,40,90,.22)}
.sol--light::after{background:linear-gradient(140deg,rgba(10,102,255,.06),transparent 60%)}

/* 下载页：激活步骤 */
.dlsteps{position:relative;z-index:1;display:flex;justify-content:center;flex-wrap:wrap;gap:46px;margin-top:54px}
.dlstep{display:flex;align-items:center;gap:14px;color:rgba(255,255,255,.8);font-size:15px}
.dlstep b{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;
  background:rgba(47,139,255,.16);box-shadow:inset 0 0 0 1px rgba(47,139,255,.5);color:var(--blue-glow);font-size:17px;font-weight:800;flex:none}
.dlstep a{color:var(--blue-glow);font-weight:600}

/* 联系页：浅底表单/信息 */
.contact__info--dark li{color:#33405a}
.contact__info--dark i{color:var(--blue)}
.contact__form--light{background:#fff;border:1px solid var(--line);box-shadow:0 18px 44px -22px rgba(10,40,90,.18)}
.contact__form--light .field label{color:#5a6577}
.contact__form--light .field input,
.contact__form--light .field select,
.contact__form--light .field textarea{background:#f6f8fc;border:1px solid var(--line);color:var(--ink)}
.contact__form--light .field input::placeholder,
.contact__form--light .field textarea::placeholder{color:#aab3c2}
.contact__form--light .field input:focus,
.contact__form--light .field select:focus,
.contact__form--light .field textarea:focus{border-color:var(--blue);background:#fff}
.contact__form--light .field select option{color:#000}