/* =========================================================
   成都枢括科技有限公司 · 官网样式
   视觉：Apple 风格 · 白底大留白 + 巨号标题 + 毛玻璃导航
   配色：白 / 浅灰 #F5F5F7 + 深蓝 #185FA5 单色点缀
   ========================================================= */
:root{
  --bg:#ffffff;
  --alt:#f5f5f7;
  --ink:#1d1d1f;
  --mut:#6e6e73;
  --faint:#6e6e73;
  --line:#e6e6eb;
  --line2:#d2d2d7;
  --pri:#185fa5;
  --pri-d:#0c447c;
  --soft:#eaf2fb;
  --r:18px;
  --r2:14px;
  --wrap:1140px;
  --shadow:0 10px 30px -20px rgba(0,0,0,.16);
  --shadow-h:0 16px 40px -24px rgba(0,0,0,.22);
  --shadow-s:0 1px 2px rgba(15,23,42,.05),0 14px 34px -22px rgba(15,23,42,.18);
  --shadow-l:0 2px 4px rgba(15,23,42,.05),0 22px 50px -26px rgba(15,23,42,.28);
  --deep-a:#132740;
  --deep-b:#0a1626;
  --glass:linear-gradient(180deg,#ffffff 0%,#fbfbfd 100%);
  --font:'PingFang SC','HarmonyOS Sans SC','MiSans','Noto Sans SC','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  font-family:var(--font);
  background:var(--bg);color:var(--ink);line-height:1.68;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
::selection{background:rgba(24,95,165,.16)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
svg{fill:none}
/* 焦点可见：键盘导航统一描边，不干扰鼠标点击 */
a:focus-visible,
button:focus-visible,
.contact-block:focus-visible,
.faq-q:focus-visible,
.copy-btn:focus-visible{
  outline:2px solid var(--pri);
  outline-offset:2px;
  border-radius:inherit;
}
a:focus:not(:focus-visible),
button:focus:not(:focus-visible){outline:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px;position:relative;z-index:2}
.section{padding:120px 0;position:relative}
.section--alt{background:var(--alt)}
.kicker{display:inline-block;font-size:13px;font-weight:500;letter-spacing:.18em;color:var(--pri);text-transform:uppercase}
.h2{font-size:clamp(30px,4.4vw,52px);font-weight:700;line-height:1.14;letter-spacing:-.015em;margin:16px 0 14px}
.lead{color:var(--mut);font-size:17px;line-height:1.75;max-width:640px}
.center{text-align:center}
.center .lead{margin:0 auto;max-width:700px}
/* ---------- 导航（毛玻璃） ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid transparent;
  transition:background .45s ease,border-color .45s ease,box-shadow .45s ease;
}
.nav.is-light{background:rgba(255,255,255,.78);border-bottom-color:rgba(0,0,0,.06);box-shadow:0 1px 0 rgba(0,0,0,.02)}
.nav.is-dark{background:rgba(10,22,40,.34);border-bottom-color:rgba(255,255,255,.10)}
.nav-in{max-width:var(--wrap);margin:0 auto;padding:0 28px;height:74px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:11px}
.brand .logo{width:34px;height:34px;border-radius:10px;background:var(--pri);display:grid;place-items:center;flex:none;transition:background .45s}
.brand .logo svg{width:20px;height:20px;stroke:#fff}
.brand b{font-size:18px;font-weight:600;letter-spacing:.01em;display:block;line-height:1.25;color:var(--ink);transition:color .45s}
.brand small{display:block;font-size:11px;font-weight:400;color:var(--faint);letter-spacing:.08em;line-height:1.2;transition:color .45s}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{font-size:14.5px;font-weight:400;color:var(--mut);transition:color .25s;position:relative;padding:4px 0}
.nav-links a:hover{color:var(--pri)}
.nav.is-dark .brand b{color:#fff}
.nav.is-dark .brand small{color:rgba(255,255,255,.55)}
.nav.is-dark .nav-links a{color:rgba(255,255,255,.78)}
.nav.is-dark .nav-links a:hover{color:#fff}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-burger{display:none;width:44px;height:44px;border-radius:11px;border:1px solid var(--line2);background:transparent;cursor:pointer;place-items:center;flex:none}
.nav-burger svg{width:20px;height:20px;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round}
.nav.is-dark .nav-burger{border-color:rgba(255,255,255,.32)}
.nav.is-dark .nav-burger svg{stroke:#fff}
.nav-burger .x{display:none}
.drawer{position:fixed;inset:74px 0 auto 0;z-index:99;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  padding:8px 28px 22px;display:none;box-shadow:var(--shadow)}
.drawer.open{display:block}
.drawer a{display:block;padding:15px 4px;font-size:17px;font-weight:400;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer a:last-child{border-bottom:none}
/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:500;padding:12px 26px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:transform .2s,background .25s,border-color .25s,color .25s,box-shadow .25s;white-space:nowrap;font-family:inherit;line-height:1.4}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--pri);color:#fff}
.btn-primary:hover{background:var(--pri-d)}
.btn-ghost{background:transparent;border-color:var(--line2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--pri);color:var(--pri)}
.btn-lg{padding:15px 34px;font-size:16px}
.btn svg{width:17px;height:17px;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.nav.is-dark .btn-primary{background:#fff;color:var(--pri)}
.nav.is-dark .btn-primary:hover{background:rgba(255,255,255,.88)}
/* ---------- Hero（全屏主视觉） ---------- */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;padding:170px 0 110px;overflow:hidden;background:#0a1626}
.hero>.wrap{width:100%;flex:1 1 auto}
.hero-photo{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.hero-photo img{width:100%;height:100%;object-fit:cover;transform:scale(1.08);filter:saturate(.88) brightness(.94);will-change:transform}
.hero-photo::after{content:'';position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(5,14,28,.40) 0%,rgba(5,14,28,.08) 26%,rgba(255,255,255,0) 72%,rgba(255,255,255,.86) 93%,#ffffff 100%),
  linear-gradient(90deg,rgba(5,14,28,.78) 0%,rgba(5,14,28,.54) 42%,rgba(5,14,28,.22) 74%,rgba(5,14,28,.10) 100%);}
.hero-content{position:relative;z-index:3;max-width:800px}
.hero-content>*{opacity:0;transform:translateY(20px);animation:rise 1s cubic-bezier(.21,.61,.35,1) forwards}
.hero-content>*:nth-child(1){animation-delay:.06s}
.hero-content>*:nth-child(2){animation-delay:.16s}
.hero-content>*:nth-child(3){animation-delay:.26s}
.hero-content>*:nth-child(4){animation-delay:.36s}
.hero-content>*:nth-child(5){animation-delay:.46s}
.hero-content>*:nth-child(6){animation-delay:.56s}
@keyframes rise{to{opacity:1;transform:none}}
.hero-badge{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;font-weight:400;color:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.10);padding:7px 17px;border-radius:999px;margin-bottom:28px}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:#fff;opacity:.9}
.hero h1{font-size:clamp(40px,6.2vw,82px);font-weight:700;line-height:1.06;letter-spacing:-.025em;color:#fff}
.hero h1 .grad{color:#8fc0ec}
.hero p.sub{font-size:clamp(16px,1.9vw,19px);line-height:1.75;color:rgba(255,255,255,.76);margin:26px 0 0;max-width:620px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 0}
.tag-chip{font-size:13px;font-weight:400;color:rgba(255,255,255,.90);border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);padding:6px 15px;border-radius:999px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:38px 0 0}
.hero-cta .btn-ghost{border-color:rgba(255,255,255,.42);color:#fff}
.hero-cta .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;max-width:800px;margin-top:56px;padding-top:26px;border-top:1px solid rgba(255,255,255,.20)}
.stat b{display:block;font-size:40px;font-weight:700;letter-spacing:-.02em;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums}
.stat b i{font-style:normal;font-size:18px;font-weight:500;color:#8fc0ec;margin-left:2px}
.stat span{font-size:13px;color:rgba(255,255,255,.62)}
/* ---------- 通用图标容器 ---------- */
.icon-box{width:52px;height:52px;border-radius:14px;background:var(--soft);display:grid;place-items:center;margin-bottom:18px}
.icon-box svg{width:25px;height:25px;stroke:var(--pri);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
/* ---------- 业务矩阵：图文交替四屏 ---------- */
.biz-list{margin-top:76px}
.biz-row{padding:60px 0}
.biz-row+.biz-row{border-top:1px solid var(--line)}
.biz-row-in{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.biz-row--rev .biz-media{order:2}
.biz-media{border-radius:var(--r);overflow:hidden;background:var(--alt)}
.biz-media img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.biz-idx{display:flex;align-items:baseline;gap:10px;margin-bottom:16px}
.biz-idx span{font-size:13px;font-weight:600;color:var(--pri);letter-spacing:.06em}
.biz-idx i{font-style:normal;font-size:12px;color:var(--faint);letter-spacing:.16em}
.biz-body h3{font-size:clamp(24px,2.6vw,34px);font-weight:700;letter-spacing:-.015em;margin-bottom:14px}
.biz-body>p{font-size:16px;color:var(--mut);line-height:1.75;max-width:520px}
.biz-body .points{margin:24px 0 0;max-width:520px}
.biz-body .points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--ink);padding:12px 0;border-top:1px solid var(--line)}
.biz-body .points li:first-child{border-top:none;padding-top:0}
.biz-body .points svg{width:16px;height:16px;stroke:var(--pri);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;margin-top:5px;flex:none}
.biz-body .link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--pri);margin-top:24px}
.biz-body .link svg{width:15px;height:15px;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s}
.biz-body .link:hover svg{transform:translateX(3px)}
/* ---------- 核心价值 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;margin-top:64px}
.value-item .icon-box{margin-bottom:20px}
.value-item h3{font-size:19px;font-weight:600;margin-bottom:10px;letter-spacing:-.01em}
.value-item p{font-size:14.5px;color:var(--mut);line-height:1.75}
/* ---------- 流程链路：大号步骤条 ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:28px;margin-top:80px;position:relative}
.flow::before{content:'';position:absolute;top:22px;left:0;right:0;height:1px;background:var(--line2)}
.flow-step{position:relative}
.flow-step .n{display:grid;place-items:center;width:44px;height:44px;border-radius:999px;background:#fff;border:1px solid var(--line2);color:var(--pri);font-size:14px;font-weight:600;position:relative;z-index:2;font-variant-numeric:tabular-nums}
.flow-step b{display:block;font-size:19px;font-weight:600;margin:20px 0 8px;letter-spacing:-.01em}
.flow-step p{font-size:14.5px;color:var(--mut);line-height:1.7}
/* ---------- 案例：大数字 + 引述 ---------- */
.case-list{margin-top:64px}
.case-row{display:grid;grid-template-columns:230px 1fr;gap:56px;align-items:start;padding:48px 0}
.case-row+.case-row{border-top:1px solid var(--line2)}
.case-kpi b{display:block;font-size:clamp(46px,5.2vw,66px);font-weight:700;color:var(--pri);letter-spacing:-.035em;line-height:1;font-variant-numeric:tabular-nums}
.case-kpi b i{font-style:normal;font-size:.46em;font-weight:600;margin-left:3px;letter-spacing:0}
.case-kpi span{display:block;margin-top:14px;font-size:14px;color:var(--mut)}
.case-tag{display:inline-block;font-size:12.5px;font-weight:500;color:var(--pri);letter-spacing:.06em;margin-bottom:16px}
.case-quote{font-size:clamp(17px,1.9vw,21px);line-height:1.72;color:var(--ink);max-width:740px;letter-spacing:-.005em}
.case-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.case-meta span{font-size:13px;color:var(--mut);background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 15px}
/* ---------- FAQ ---------- */
.faq-list{margin:64px auto 0;display:grid;grid-template-columns:repeat(2,1fr);gap:14px;align-items:start}
.faq-item{border:1px solid var(--line);border-radius:var(--r2);background:#fff;overflow:hidden;transition:border-color .3s,box-shadow .3s}
.faq-item.open{border-color:var(--line2);box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;background:none;border:none;color:var(--ink);font-family:inherit;font-size:16px;font-weight:500;padding:22px 24px;cursor:pointer;line-height:1.5}
.faq-q .pm{width:26px;height:26px;flex:none;border-radius:50%;border:1px solid var(--line2);display:grid;place-items:center;position:relative;transition:background .25s,border-color .25s}
.faq-q .pm::before,.faq-q .pm::after{content:'';position:absolute;background:var(--pri);border-radius:2px}
.faq-q .pm::before{width:11px;height:1.6px}
.faq-q .pm::after{width:1.6px;height:11px;transition:opacity .25s}
.faq-item.open .pm{background:var(--soft);border-color:var(--soft)}
.faq-item.open .pm::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.21,.61,.35,1)}
.faq-a p{padding:0 24px 22px;font-size:14.5px;color:var(--mut);line-height:1.75}
/* ---------- 关于 ---------- */
.about-flex{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.about-points{margin-top:28px;display:grid;gap:18px}
.about-points li{display:flex;gap:14px;align-items:flex-start}
.about-points .ic{width:38px;height:38px;flex:none;border-radius:11px;background:var(--soft);display:grid;place-items:center}
.about-points .ic svg{width:18px;height:18px;stroke:var(--pri);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.about-points b{font-size:16px;font-weight:600;display:block;margin-bottom:3px}
.about-points span{font-size:14px;color:var(--mut)}
.profile-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 30px;margin:22px 0 4px}
.profile-facts>div{display:flex;gap:10px;align-items:baseline;padding-bottom:9px;border-bottom:1px solid var(--line)}
.profile-facts dt{flex:none;font-size:13px;font-weight:600;color:var(--mut);letter-spacing:.02em;white-space:nowrap}
.profile-facts dd{margin:0;font-size:15px;font-weight:500;color:var(--ink,#1d1d1f)}
@media(max-width:640px){.profile-facts{grid-template-columns:1fr;gap:8px}}
.about-visual{border-radius:var(--r);border:1px solid var(--line);background:#fff;overflow:hidden}
.about-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.about-cap{padding:20px 24px;font-size:13.5px;color:var(--mut);line-height:1.65;border-top:1px solid var(--line)}
/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:56px}
.contact-block{display:flex;flex-direction:column;gap:20px;border:1px solid var(--line);border-radius:var(--r);background:#fff;padding:34px;transition:transform .3s,border-color .3s,box-shadow .3s;position:relative;text-align:left;font-family:inherit;color:inherit}
a.contact-block{cursor:pointer}
.contact-block:hover{transform:translateY(-4px);border-color:var(--line2);box-shadow:var(--shadow-h)}
.cb-ic{width:52px;height:52px;border-radius:14px;background:var(--soft);display:grid;place-items:center}
.cb-ic svg{width:25px;height:25px;stroke:var(--pri);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.cb-body b{display:block;font-size:16px;font-weight:600;margin-bottom:10px}
.cb-body strong{display:block;font-size:clamp(20px,2.1vw,25px);font-weight:700;color:var(--pri);letter-spacing:-.015em;line-height:1.25;word-break:break-all;font-variant-numeric:tabular-nums}
.cb-body small{display:block;margin-top:12px;font-size:13.5px;color:var(--mut);line-height:1.6}
.cb-go{position:absolute;top:34px;right:30px}
.cb-go svg{width:18px;height:18px;stroke:var(--faint);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s,stroke .25s}
a.contact-block:hover .cb-go svg{stroke:var(--pri);transform:translateX(3px)}
.cb-act{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;align-items:center}
/* 微信卡片：二维码常驻卡片内（与「复制微信号」按钮同排） */
.contact-block .qr{width:152px;height:152px;border-radius:var(--r2);border:1px solid var(--line);background:#fff;padding:6px;display:grid;place-items:center}
.qr img{width:100%;height:100%;object-fit:contain;display:block}
.contact-block--wx{align-items:flex-start}
.contact-block--wx .cb-body strong{font-size:23px;letter-spacing:-.01em;word-break:normal}
.cb-wxrow{display:flex;align-items:center;gap:16px;width:100%;margin-top:14px}
.contact-block--wx .qr{width:112px;height:112px;flex:none}
/* 服务承诺列表 */
.promise-list{display:grid;gap:11px;margin-top:14px}
.promise-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--ink);line-height:1.55}
.promise-list svg{width:17px;height:17px;stroke:var(--pri);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;margin-top:2px;flex:none}
.copy-btn{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:500;color:var(--pri);background:var(--soft);border:none;border-radius:999px;padding:9px 18px;min-height:44px;cursor:pointer;font-family:inherit;transition:background .25s;margin:0}
.copy-btn:hover{background:#dfeaf8}
.copy-btn svg{width:15px;height:15px;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.modal .copy-btn{margin-top:16px}
.info-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px}
.info-item{display:flex;gap:15px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--r2);background:#fff;padding:22px}
.info-item .ic{width:38px;height:38px;flex:none;border-radius:11px;background:var(--soft);display:grid;place-items:center}
.info-item .ic svg{width:18px;height:18px;stroke:var(--pri);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.info-item b{font-size:15px;font-weight:600;display:block;margin-bottom:3px}
.info-item span{font-size:14px;color:var(--mut)}
/* ---------- CTA ---------- */
.cta-box{border-radius:26px;background:var(--pri);padding:72px 44px;text-align:center;position:relative;overflow:hidden}
.cta-box h2{font-size:clamp(26px,3.4vw,42px);font-weight:700;letter-spacing:-.02em;margin-bottom:16px;color:#fff}
.cta-box p{color:rgba(255,255,255,.82);font-size:17px;max-width:540px;margin:0 auto 34px;line-height:1.7}
.cta-box .row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-box .btn-primary{background:#fff;color:var(--pri)}
.cta-box .btn-primary:hover{background:rgba(255,255,255,.90)}
.cta-box .btn-ghost{border-color:rgba(255,255,255,.46);color:#fff}
.cta-box .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff}
.cta-box .note{margin-top:28px;font-size:13.5px;color:rgba(255,255,255,.62)}
/* ---------- 页脚 ---------- */
.footer{background:var(--alt);padding:56px 0 34px;margin-top:0;position:relative;z-index:2;color:var(--mut)}
.footer-in{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer h4{font-size:14px;font-weight:600;margin-bottom:18px;color:var(--ink)}
.footer a,.footer span{display:block;font-size:13.5px;color:var(--mut);padding:5px 0}
.footer a:hover{color:var(--pri)}
.footer .desc{font-size:13.5px;color:var(--mut);line-height:1.75;margin-top:16px;max-width:320px}
.footer .brand b{color:var(--ink)}
.footer .brand small{color:var(--faint)}
.footer .bottom{border-top:1px solid var(--line);margin-top:44px;padding-top:24px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--faint)}
.footer .bottom span{display:inline;padding:0;color:var(--faint)}
.footer .bottom a{color:inherit;text-decoration:none;border-bottom:1px solid var(--line)}
.footer .bottom a:hover{color:var(--acc);border-bottom-color:var(--acc)}
/* ---------- 微信弹窗 ---------- */
.modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:24px}
.modal.open{display:flex}
.modal .mask{position:absolute;inset:0;background:rgba(15,23,42,.42);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.modal .box{position:relative;z-index:2;width:min(380px,100%);border-radius:22px;background:#fff;padding:40px 32px;text-align:center;box-shadow:0 40px 90px -30px rgba(15,23,42,.45)}
.modal .close{position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:50%;border:none;background:var(--alt);cursor:pointer;color:var(--mut);font-size:15px;line-height:1;font-family:inherit}
.modal .close:hover{color:var(--ink)}
.modal .icon-box{margin:0 auto 20px}
.modal h3{font-size:21px;font-weight:600;margin-bottom:8px}
.modal .wx-id{font-size:26px;font-weight:700;color:var(--pri);letter-spacing:.03em;margin:12px 0 6px}
.modal .qr{width:180px;height:180px;margin:22px auto 6px;border-radius:var(--r2);border:1px solid var(--line);background:#fff;padding:8px;display:grid;place-items:center}
.modal .tip{font-size:13px;color:var(--mut);margin-top:16px}
.modal .tip a{color:var(--pri)}
/* ---------- 悬浮 & 返回顶部 ---------- */
.float-bar{position:fixed;right:20px;bottom:20px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-bar .fb{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;border:1px solid var(--line);background:rgba(255,255,255,.86);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:var(--shadow);cursor:pointer;transition:transform .25s,border-color .25s;position:relative}
.float-bar .fb:hover{transform:translateY(-3px);border-color:var(--line2)}
.float-bar .fb svg{width:22px;height:22px;stroke:var(--pri);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.float-bar .fb.top svg{stroke:var(--mut)}
.float-bar .fb .pop{position:absolute;right:64px;top:50%;transform:translateY(-50%);white-space:nowrap;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:12px;padding:10px 16px;font-size:13px;color:var(--ink);display:none;box-shadow:var(--shadow)}
.float-bar .fb:hover .pop{display:block}
.float-bar .fb .pop b{color:var(--pri)}
.float-bar .fb.top{opacity:0;pointer-events:none;transition:opacity .3s}
.float-bar .fb.top.show{opacity:1;pointer-events:auto}
.mobile-cta{display:none;position:fixed;left:0;right:0;bottom:0;z-index:95;background:rgba(255,255,255,.92);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-top:1px solid var(--line);padding:10px 14px calc(10px + env(safe-area-inset-bottom));gap:10px}
.mobile-cta a{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:500;padding:13px 0;border-radius:999px}
.mobile-cta a svg{width:17px;height:17px;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.mobile-cta .tel{background:var(--pri);color:#fff}
.mobile-cta .wx{border:1px solid var(--line2);color:var(--ink);background:#fff}
body.has-mobile-cta{padding-bottom:74px}
body.has-mobile-cta .float-bar{bottom:88px}
/* ---------- 揭示动效 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.21,.61,.35,1),transform .9s cubic-bezier(.21,.61,.35,1)}
.reveal.on{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-content>*{opacity:1;transform:none;animation:none}
  html{scroll-behavior:auto}
}
/* ---------- 质感层：厚度 / 材质 / 深色收口 ---------- */
.icon-box,.cb-ic,.about-points .ic,.info-item .ic{
  background:linear-gradient(180deg,#f4f9fd 0%,#e7f1fa 100%);
  border:1px solid rgba(24,95,165,.10);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9);
}
.nav.is-light{box-shadow:0 1px 0 rgba(0,0,0,.03),0 12px 30px -24px rgba(15,23,42,.30)}
.btn-primary{box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 10px 24px -12px rgba(24,95,165,.58)}
.btn-primary:hover{box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 16px 32px -14px rgba(12,68,124,.68)}
.cta-box .btn-primary,.nav.is-dark .btn-primary{box-shadow:0 10px 26px -14px rgba(0,0,0,.45)}
.faq-item,.info-item,.contact-block{background:var(--glass);box-shadow:var(--shadow-s)}
.faq-item.open{box-shadow:var(--shadow-l)}
.contact-block:hover{box-shadow:var(--shadow-l)}
.about-visual{box-shadow:var(--shadow-s)}
.flow-step .n{box-shadow:0 2px 8px -2px rgba(15,23,42,.14),inset 0 1px 0 rgba(255,255,255,.9)}
/* 深色收口：CTA / 页脚 —— 与首屏深底首尾呼应 */
.cta-box{
  background:linear-gradient(180deg,var(--deep-a) 0%,var(--deep-b) 100%);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:0 34px 70px -36px rgba(10,22,38,.60);
}
.footer{background:linear-gradient(180deg,#12263c 0%,var(--deep-b) 100%);color:rgba(255,255,255,.60)}
.footer h4{color:#fff}
.footer a,.footer span{color:rgba(255,255,255,.60)}
.footer a:hover{color:#8fc0ec}
.footer .desc{color:rgba(255,255,255,.55)}
.footer .brand b{color:#fff}
.footer .brand small{color:rgba(255,255,255,.45)}
.footer .bottom{border-top-color:rgba(255,255,255,.12)}
.footer .bottom span{color:rgba(255,255,255,.62)}
.footer .bottom a{color:rgba(255,255,255,.62);text-decoration:none;border-bottom:1px solid rgba(255,255,255,.25)}
.footer .bottom a:hover{color:#fff;border-bottom-color:#fff}
/* 镜头感：揭示带轻微缩放，配图缓慢回位 */
.reveal{transform:translateY(26px) scale(.986)}
.biz-media img,.about-visual img{transform:scale(1.06);transition:transform 1.5s cubic-bezier(.21,.61,.35,1)}
.biz-row.on .biz-media img,.about-visual.on img{transform:scale(1)}
/* 字重：中文标题 600 优于 700（Windows 上 700 会退到 Noto Sans SC Bold，笔画发闷） */
.h2,.biz-body h3,.cta-box h2,.case-tag{font-weight:600}
/* 图片悬停微放大：揭示动画（1.5s）之后，悬停用更快的时长接管 */
.biz-row.on .biz-media:hover img,.about-visual.on:hover img{transform:scale(1.035);transition:transform .75s cubic-bezier(.21,.61,.35,1)}
.case-quote::before{content:'“';color:rgba(24,95,165,.30);font-family:Georgia,'Songti SC',serif}
.case-quote::after{content:'”';color:rgba(24,95,165,.30);font-family:Georgia,'Songti SC',serif}
/* ---------- 响应式 ---------- */
@media(max-width:1080px){
  .nav-links{gap:24px}
  .nav-links a{font-size:14px}
}
@media(max-width:900px){
  .nav-links{display:none}
  .nav-burger{display:grid}
}
@media(max-width:1024px){
  .section{padding:96px 0}
  .biz-list{margin-top:56px}
  .biz-row{padding:48px 0}
  .biz-row-in{grid-template-columns:1fr;gap:36px}
  .biz-row--rev .biz-media{order:0}
  .biz-body>p,.biz-body .points{max-width:none}
  .value-grid{grid-template-columns:repeat(2,1fr);gap:36px}
  .flow{grid-template-columns:repeat(3,1fr);gap:36px 28px}
  .flow::before{display:none}
  .case-row{grid-template-columns:1fr;gap:16px;padding:40px 0}
  .contact-grid{grid-template-columns:1fr}
  .contact-block--wx{align-items:flex-start}
  .cb-wxrow{gap:18px}
  .cb-body{flex:1 1 auto}
  .cb-act{margin-top:0;flex:none}
  .cb-go{position:static;margin-left:auto;flex:none}
  .about-flex{grid-template-columns:1fr;gap:40px}
  .footer-in{grid-template-columns:repeat(2,1fr)}
  .info-strip{grid-template-columns:1fr}
  .faq-list{grid-template-columns:1fr}
  .hero-stats{gap:16px}
  .stat b{font-size:34px}
}
@media(max-width:768px){
  .section{padding:76px 0}
  .hero{padding:136px 0 68px;min-height:auto}
  .hero-photo::after{background:linear-gradient(180deg,rgba(5,14,28,.58) 0%,rgba(5,14,28,.42) 42%,rgba(5,14,28,.52) 72%,rgba(255,255,255,.94) 95%,#ffffff 100%)}
  .hero-content{max-width:none}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px 14px;margin-top:44px}
  .stat b{font-size:32px}
  .biz-list{margin-top:44px}
  .biz-row{padding:36px 0}
  .biz-media{border-radius:var(--r2)}
  .value-grid{grid-template-columns:1fr;gap:32px}
  .flow{grid-template-columns:1fr;gap:32px;margin-top:48px}
  .flow-step .n{width:40px;height:40px}
  .case-list{margin-top:40px}
  .case-row{padding:32px 0}
  .case-kpi b{font-size:46px}
  .contact-grid{grid-template-columns:1fr;margin-top:40px}
  .contact-block{flex-direction:column;align-items:flex-start;padding:28px}
  .cb-go{position:absolute;top:28px;right:26px;margin:0}
  .contact-block--wx .qr{width:100px;height:100px}
  .cb-act{margin-top:4px}
  .info-strip{margin-top:20px}
  .faq-list{margin-top:44px}
  .cta-box{padding:48px 24px}
  .mobile-cta{display:flex}
  .float-bar{right:14px}
  .float-bar .fb:not(.top){display:none}
  body.has-mobile-cta .footer{padding-bottom:96px}
  .footer-in{grid-template-columns:1fr;gap:26px}
}
@media(max-width:420px){
  .wrap{padding:0 20px}
  .nav-in{padding:0 20px}
  .brand b{font-size:16px}
  .brand small{display:none}
  .hero h1{font-size:34px}
}