/* =====================================================
   咪助网 · 基于「方案七 · 服务矩阵」整体升级版
   白底靛蓝骨架保留；首屏改全屏背景大图；
   每屏底部版权条；联系屏重做；新增多处交互动效
   ===================================================== */
:root{--brand:#00b056;--blue:#00b056;--blue-lt:#2fd47e;--ink:#0f1222;--grey:#f5f6fa}
body{background:#fff;color:var(--ink)}
.fp{background:#fff}

.sec{padding:calc(var(--nav-h) + 16px) 5vw 78px}
.wrap-in{width:min(1320px,90vw);margin:0 auto}

/* ---------- 每屏底部版权条 ---------- */
.sec-foot{
  position:absolute;left:0;right:0;bottom:0;z-index:3;
  display:flex;justify-content:center;align-items:center;gap:28px;flex-wrap:wrap;
  padding:0 5vw;height:48px;
  font-size:11px;letter-spacing:.05em;pointer-events:none;
  border-top:1px solid transparent;text-align:center;
}
.sec-foot a{pointer-events:auto}
.sec-foot a:hover{text-decoration:underline}
.sec[data-tone="light"] .sec-foot{color:rgba(15,18,34,.4)}
.sec[data-tone="dark"]  .sec-foot{color:rgba(255,255,255,.42)}

.tag{display:inline-flex;align-items:center;gap:10px;font-size:11px;font-weight:700;
  letter-spacing:.28em;text-transform:uppercase;color:var(--blue);margin-bottom:24px}
.tag::after{content:"";width:30px;height:1px;background:currentColor;opacity:.6}

h1,h2{font-weight:800;letter-spacing:-.035em;line-height:1.12;color:var(--ink)}
h2{font-size:clamp(27px,3.1vw,46px)}
h1 em,h2 em{font-style:normal;color:var(--blue)}
p.lead{font-size:clamp(14.5px,1.06vw,16.5px);line-height:2.05;color:#5a5f70;margin-top:24px;max-width:680px}

.btn-row{display:flex;flex-wrap:wrap;gap:13px;margin-top:38px}
.btn{border-radius:8px;padding:15px 32px;font-size:14px;font-weight:650}
.btn-solid{background:var(--blue);color:#fff}
.btn-solid:hover{background:#009a4d;transform:translateY(-2px)}
.btn-ghost{border:1px solid rgba(15,18,34,.2);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink)}
.btn-ghost:hover span{color:#fff}

/* =====================================================
   首屏 · 全屏背景大图（参考方案六的影像化处理）
   ===================================================== */
.hero{
  display:flex;align-items:center;
  padding:calc(var(--nav-h) + 20px) 5vw 92px;text-align:left;
}
.hero-bg{position:absolute;inset:0;z-index:0;opacity:0;transition:opacity 1.4s ease}
.hero-bg.loaded{opacity:1}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 30%;
  animation:kb 24s ease-in-out infinite alternate;will-change:transform}
@keyframes kb{from{transform:scale(1.03)}to{transform:scale(1.13)}}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,9,22,.94) 0%,rgba(7,9,22,.72) 42%,rgba(7,9,22,.3) 78%,rgba(7,9,22,.18) 100%)}
.hero-bg::before{content:"";position:absolute;inset:auto 0 0 0;height:38%;z-index:1;
  background:linear-gradient(0deg,rgba(7,9,22,.85),transparent)}
.hero-in{position:relative;z-index:2;max-width:1320px;margin:0 auto;width:100%}
.hero .tag{color:var(--blue-lt)}
.hero .tag::before{content:"";width:30px;height:1px;background:currentColor;opacity:.6}
.hero h1{color:#fff;font-size:clamp(42px,5.6vw,84px);line-height:1.08;letter-spacing:-.04em;
  text-shadow:0 2px 40px rgba(0,0,0,.35)}
.hero h1 em{font-style:normal;color:var(--blue-lt)}
.hero .lead{color:rgba(255,255,255,.78);margin-top:26px;max-width:640px}
.hero .btn-row{margin-top:40px}
.hero .btn-solid{background:var(--blue)}
.hero .btn-solid:hover{background:#00c262}
.hero .btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.hero .btn-ghost:hover{background:#fff;border-color:#fff}
.hero .btn-ghost:hover span{color:var(--ink)}
.hero-badges{display:flex;gap:clamp(26px,4vw,72px);flex-wrap:wrap;
  margin-top:54px;border-top:1px solid rgba(255,255,255,.18);padding-top:26px;max-width:820px}
.hero-badges > div{min-width:96px}
.hero-badges b{display:block;font-size:clamp(26px,2.7vw,40px);font-weight:800;letter-spacing:-.03em;color:#fff;line-height:1}
.hero-badges b i{font-style:normal;font-size:.5em;color:var(--blue-lt);margin-left:3px}
.hero-badges > div > span{display:block;font-size:12px;letter-spacing:.12em;color:rgba(255,255,255,.55);margin-top:9px}
.hero .scroll-hint{color:rgba(255,255,255,.75);bottom:66px}

/* ---------- 四象限矩阵 ---------- */
.matrix{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(15,18,34,.12);
  border:1px solid rgba(15,18,34,.12);margin-top:48px;border-radius:12px;overflow:hidden}
.quad{background:#fff;padding:clamp(28px,3.4vw,48px);position:relative;
  transition:background .5s var(--ease);min-height:280px;display:flex;flex-direction:column;overflow:hidden}
.quad::before{content:"";position:absolute;inset:0;opacity:0;transition:opacity .45s;pointer-events:none;
  background:radial-gradient(340px circle at var(--mx,50%) var(--my,50%),rgba(0,176,86,.09),transparent 65%)}
.quad:hover{background:var(--grey)}
.quad:hover::before{opacity:1}
.quad .no{font-size:12px;font-weight:800;letter-spacing:.2em;color:var(--blue)}
.quad h3{font-size:clamp(20px,2vw,28px);font-weight:800;letter-spacing:-.025em;margin-top:20px}
.quad .sub{font-size:13px;color:#8b90a0;margin-top:7px;letter-spacing:.02em}
.quad p{font-size:14px;line-height:2;color:#5a5f70;margin-top:18px;flex:1;position:relative}
.quad ul{margin-top:20px;border-top:1px solid rgba(15,18,34,.1);padding-top:16px;
  display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;position:relative}
.quad li{font-size:13px;color:#6e7383;padding-left:14px;position:relative}
.quad li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;
  border-radius:50%;background:rgba(0,176,86,.32);transition:background .3s,transform .3s}
.quad li:hover::before{background:var(--blue);transform:scale(1.4)}
.quad .go{position:absolute;right:clamp(28px,3.4vw,48px);top:clamp(28px,3.4vw,48px);
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(15,18,34,.16);
  display:grid;place-items:center;font-size:15px;color:var(--ink);transition:.4s var(--ease)}
.quad:hover .go{background:var(--blue);border-color:var(--blue);color:#fff;transform:rotate(-45deg)}

/* ---------- 行业 Tab ---------- */
.inds{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(24px,4vw,64px);margin-top:46px;align-items:start}
.ind-tabs{border-top:1px solid rgba(15,18,34,.14)}
.ind-tabs button{display:flex;justify-content:space-between;align-items:center;width:100%;
  text-align:left;padding:21px 4px;border-bottom:1px solid rgba(15,18,34,.1);
  font-size:17px;font-weight:650;letter-spacing:-.015em;color:#9aa0b0;
  transition:color .35s,padding-left .35s var(--ease)}
.ind-tabs button:hover{color:var(--ink);padding-left:12px}
.ind-tabs button.on{color:var(--ink);padding-left:12px}
.ind-tabs button.on .arrow{background:var(--blue);border-color:var(--blue);color:#fff}
.ind-tabs .arrow{width:26px;height:26px;border-radius:50%;border:1px solid rgba(15,18,34,.18);
  display:grid;place-items:center;font-size:12px;flex:0 0 auto;transition:.35s}
.ind-panes{position:relative;background:var(--grey);border-radius:12px;overflow:hidden;min-height:430px}
.ind-pane{position:absolute;inset:0;opacity:0;visibility:hidden;
  transition:opacity .55s var(--ease),transform .55s var(--ease);transform:translateY(14px)}
.ind-pane.on{opacity:1;visibility:visible;transform:none;position:relative}
.ind-pane img{width:100%;height:200px;object-fit:cover;transition:transform 6s var(--ease)}
.ind-pane.on img{transform:scale(1.05)}
.ind-pane .body{padding:clamp(26px,3vw,40px)}
.ind-pane h3{font-size:clamp(20px,2vw,26px);font-weight:800;letter-spacing:-.025em}
.ind-pane p{font-size:14px;line-height:2;color:#5a5f70;margin-top:16px}
.ind-pane .pts{display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;margin-top:22px;
  border-top:1px solid rgba(15,18,34,.1);padding-top:20px}
.ind-pane .pts div{font-size:13.5px;color:#3d4250;padding-left:16px;position:relative}
.ind-pane .pts div::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;
  border-radius:50%;background:var(--blue)}

/* ---------- 案例横条 ---------- */
.cases{margin-top:46px;border-top:1px solid rgba(15,18,34,.14)}
.cases .row{display:grid;grid-template-columns:1.2fr 1.8fr auto;gap:24px;align-items:center;
  padding:24px 4px;border-bottom:1px solid rgba(15,18,34,.1);
  transition:padding-left .4s var(--ease),background .4s}
.cases .row:hover{padding-left:20px;background:var(--grey)}
.cases b{font-size:17px;font-weight:750;letter-spacing:-.015em}
.cases em{font-style:normal;font-size:13.5px;color:#6e7383;line-height:1.8}
.cases i{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--blue);
  background:rgba(0,176,86,.08);padding:6px 12px;border-radius:6px;white-space:nowrap}
/* 案例 hover 跟随预览浮层 */
.case-peek{position:fixed;z-index:180;width:330px;pointer-events:none;opacity:0;
  transform:translateY(10px) scale(.97);transition:opacity .3s var(--ease),transform .3s var(--ease);
  border-radius:14px;overflow:hidden;box-shadow:0 30px 70px rgba(15,18,34,.32);
  background:#0f1222}
.case-peek.show{opacity:1;transform:none}
.case-peek img{width:100%;height:200px;object-fit:cover;display:block}
.case-peek .pt{display:flex;justify-content:space-between;align-items:center;
  padding:12px 16px;color:#fff;font-size:12.5px;letter-spacing:.06em}
.case-peek .pt i{font-style:normal;color:var(--blue-lt);font-size:11px;letter-spacing:.14em}

/* ---------- 数据 + 行业跑马灯 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:46px}
.stats > div{background:var(--grey);border-radius:12px;padding:32px 26px 34px;position:relative;overflow:hidden}
.stats > div::after{content:"";position:absolute;left:26px;bottom:24px;height:3px;width:34px;
  border-radius:2px;background:var(--blue);transform:scaleX(0);transform-origin:left;
  transition:transform 1.1s var(--ease) .3s}
.stats > div.in::after{transform:scaleX(1)}
.stats b{display:block;font-size:clamp(28px,3.2vw,46px);font-weight:800;letter-spacing:-.04em;color:var(--blue);line-height:1}
.stats > div > span{display:block;font-size:12.5px;letter-spacing:.1em;color:#8b90a0;margin-top:14px}

.mq-wrap{margin-top:52px;border-top:1px solid rgba(15,18,34,.1);border-bottom:1px solid rgba(15,18,34,.1);
  padding:20px 0;display:flex;align-items:center;gap:26px;overflow:hidden}
.mq-label{flex:0 0 auto;font-size:11px;font-weight:800;letter-spacing:.22em;color:var(--blue);white-space:nowrap}
.marquee{flex:1;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.mq-track{display:flex;gap:0;width:max-content;animation:mq 36s linear infinite}
.marquee:hover .mq-track{animation-play-state:paused}
.mq-track span{font-size:14.5px;font-weight:600;color:#3d4250;white-space:nowrap;padding:0 18px;position:relative}
.mq-track span::after{content:"·";position:absolute;right:-4px;color:rgba(0,176,86,.4)}
@keyframes mq{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- 新闻动态 ---------- */
.press{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:46px}
.press a{background:var(--grey);border-radius:12px;overflow:hidden;display:block;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.press a:hover{transform:translateY(-6px);box-shadow:0 22px 46px rgba(15,18,34,.1)}
.press img{width:100%;height:168px;object-fit:cover;transition:transform 1.2s var(--ease)}
.press a:hover img{transform:scale(1.06)}
.press .bd{padding:24px 24px 26px}
.press time{font-size:11.5px;letter-spacing:.14em;color:var(--blue);font-weight:700}
.press h3{font-size:17px;font-weight:750;line-height:1.5;letter-spacing:-.018em;margin-top:12px;transition:color .3s}
.press a:hover h3{color:var(--blue)}
.press p{font-size:13px;line-height:1.9;color:#5a5f70;margin-top:11px}
.press .mr{display:inline-block;font-size:12.5px;font-weight:650;color:var(--blue);margin-top:16px;transition:transform .35s var(--ease)}
.press a:hover .mr{transform:translateX(6px)}

/* ---------- 交付承诺 ---------- */
.pledge{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:46px}
.pledge > div{background:var(--grey);border-radius:12px;padding:30px 26px 32px;position:relative;overflow:hidden;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.pledge > div::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--blue-lt));transform:scaleX(0);transform-origin:left;
  transition:transform .9s var(--ease)}
.pledge > div.in::before{transform:scaleX(1)}
.pledge > div:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(15,18,34,.1)}
.pledge .no{font-size:11.5px;font-weight:800;letter-spacing:.18em;color:var(--blue)}
.pledge h3{font-size:17px;font-weight:750;margin-top:16px;letter-spacing:-.018em}
.pledge p{font-size:13px;line-height:1.9;color:#5a5f70;margin-top:12px}
.pledge p b{color:var(--ink);font-weight:750}

/* ---------- 客户评价 ---------- */
.voices{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:46px}
.voices figure{margin:0;border:1px solid rgba(15,18,34,.1);border-radius:12px;padding:30px 28px 28px;
  display:flex;flex-direction:column;transition:border-color .4s,transform .5s var(--ease),box-shadow .5s}
.voices figure:hover{border-color:rgba(0,176,86,.35);transform:translateY(-6px);box-shadow:0 20px 44px rgba(15,18,34,.08)}
.voices .qm{font-size:38px;line-height:.8;font-weight:800;color:rgba(0,176,86,.3)}
.voices blockquote{margin:16px 0 0;font-size:13.8px;line-height:2.05;color:#3d4250;flex:1}
.voices figcaption{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;
  border-top:1px solid rgba(15,18,34,.09)}
.voices figcaption>div{flex:1}
.voices .av{width:42px;height:42px;border-radius:50%;overflow:hidden;flex:0 0 auto;background:#e6e9f5}
.voices .av img{width:100%;height:100%;object-fit:cover}
.voices b{display:block;font-size:13.5px;font-weight:750}
.voices span{display:block;font-size:12px;color:#8b90a0;margin-top:4px}

/* ---------- 常见问题 ---------- */
.faqs{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:46px;align-items:start}
.faqs details{background:var(--grey);border-radius:12px;padding:0 26px;transition:background .3s}
.faqs details[open]{background:#fff;box-shadow:0 14px 34px rgba(15,18,34,.08)}
.faqs summary{list-style:none;cursor:pointer;display:flex;gap:16px;align-items:flex-start;
  padding:22px 0;font-size:16px;font-weight:720;letter-spacing:-.015em}
.faqs summary::-webkit-details-marker{display:none}
.faqs summary::after{content:"+";margin-left:auto;color:var(--blue);font-size:19px;font-weight:400;line-height:1.15}
.faqs details[open] summary::after{content:"–"}
.faqs .ans{font-size:13.5px;line-height:2;color:#5a5f70;padding:0 0 22px}

/* =====================================================
   联系屏 · 全新设计
   ===================================================== */
.contact{padding-bottom:92px}
.cta-bg{position:absolute;inset:0;z-index:0}
.cta-bg img{width:100%;height:100%;object-fit:cover;opacity:.22}
.cta-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(15,18,34,.96) 0%,rgba(15,18,34,.9) 55%,rgba(4,52,30,.85) 100%)}
.cta-glow{position:absolute;z-index:1;width:560px;height:560px;border-radius:50%;
  right:-120px;top:-160px;pointer-events:none;
  background:radial-gradient(circle,rgba(0,176,86,.32),transparent 65%);
  animation:glow 9s ease-in-out infinite alternate}
@keyframes glow{from{transform:translate(0,0);opacity:.75}to{transform:translate(-70px,50px);opacity:1}}
.contact-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;
  gap:clamp(34px,4.5vw,72px);align-items:center}
.contact h2{color:#fff;font-size:clamp(28px,3.3vw,50px)}
.contact h2 em{font-style:normal;color:var(--blue-lt)}
.contact .lead{color:rgba(255,255,255,.62)}
.c-list{margin-top:40px;display:grid;gap:22px}
.c-list li{display:flex;gap:18px;align-items:flex-start}
.c-list i{font-style:normal;flex:0 0 auto;width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;font-size:14px;font-weight:800;color:var(--blue-lt);
  background:rgba(47,212,126,.12);border:1px solid rgba(47,212,126,.28)}
.c-list b{display:block;font-size:16.5px;font-weight:750;color:#fff;letter-spacing:.01em}
.c-list .c-phone{font-size:clamp(22px,2.2vw,30px);font-weight:800;color:var(--blue-lt);letter-spacing:.03em}
.c-list span{display:block;font-size:12.5px;color:rgba(255,255,255,.5);margin-top:5px}
.c-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:18px;padding:clamp(24px,2.6vw,36px);backdrop-filter:blur(14px);
  box-shadow:0 40px 90px rgba(0,0,0,.4)}
.c-qr-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.c-qr-row figure{margin:0;background:rgba(255,255,255,.94);border-radius:14px;padding:16px 16px 14px;
  text-align:center;transition:transform .45s var(--ease)}
.c-qr-row figure:hover{transform:translateY(-5px)}
.c-qr-row img{width:min(128px,58%);margin:0 auto;border-radius:8px}
.c-qr-row figcaption{margin-top:10px}
.c-qr-row b{display:block;font-size:13.5px;color:var(--ink);font-weight:750}
.c-qr-row span{display:block;font-size:11px;color:#8b90a0;margin-top:4px;line-height:1.6}
.c-div{height:1px;background:rgba(255,255,255,.12);margin:24px 0 20px}
.c-form .f-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.c-form input{width:100%;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);
  border-radius:9px;padding:13px 15px;font-size:13.5px;color:#fff;outline:none;transition:border-color .3s}
.c-form input::placeholder{color:rgba(255,255,255,.4)}
.c-form input:focus{border-color:var(--blue-lt);background:rgba(255,255,255,.09)}
.c-form .submit{width:100%;margin-top:16px;border-radius:9px;padding:15px;font-size:14.5px;font-weight:700;
  background:var(--blue);color:#fff;transition:.35s var(--ease);letter-spacing:.04em}
.c-form .submit:hover{background:#00c262;transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,176,86,.4)}
.c-form .submit:disabled{background:#2a3150;transform:none;box-shadow:none;cursor:default}
.f-ok{display:none;text-align:center;padding:8px 0 2px;font-size:13.5px;color:#7ef0c2;letter-spacing:.04em}
.f-ok.show{display:block;animation:okin .5s var(--ease)}
@keyframes okin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:26px;bottom:64px;z-index:150;width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;font-size:17px;color:#fff;background:var(--ink);
  box-shadow:0 12px 30px rgba(15,18,34,.35);opacity:0;visibility:hidden;
  transform:translateY(14px);transition:.4s var(--ease)}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--blue);transform:translateY(-3px)}

@media (max-width:1024px){
  .matrix,.inds,.faqs{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .cases .row{grid-template-columns:1fr;gap:8px}
  .cases i{justify-self:start}
  .press,.voices{grid-template-columns:1fr}
  .pledge{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .case-peek{display:none}
  .hero{padding-bottom:110px}
}
@media (max-width:640px){
  .quad ul,.ind-pane .pts{grid-template-columns:1fr}
  .pledge{grid-template-columns:1fr}
  .c-qr-row{grid-template-columns:1fr 1fr}
  .c-form .f-grid{grid-template-columns:1fr}
  .sec-foot{flex-direction:column;justify-content:center;gap:3px;height:auto;padding:10px 5vw;text-align:center}
  .hero-badges{gap:22px}
  /* —— 手机端首屏紧凑化：内容不再超高，元素不再重叠 —— */
  .hero{padding-top:calc(var(--nav-h) + 4px);padding-bottom:88px}
  .hero .tag{font-size:10px}
  .hero .lead{margin-top:14px;font-size:13.5px;line-height:1.78}
  .hero .btn-row{margin-top:24px;gap:10px}
  .hero .btn{padding:13px 22px;font-size:13px;border-radius:7px}
  .hero-badges{margin-top:26px;padding-top:16px;gap:14px 20px}
  .hero-badges > div{min-width:74px}
  .hero-badges b{font-size:24px}
  .hero-badges > div > span{font-size:10px;margin-top:5px;letter-spacing:.05em}
  .hero .scroll-hint{display:none}
  .sec-foot{font-size:10px;letter-spacing:.02em;line-height:1.5}
}
/* =====================================================
/* =====================================================
   v4 补丁：内页背景图层（恢复）+ 首屏大图裁切
   ===================================================== */
.sec-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.sec-bg img{width:100%;height:100%;object-fit:cover;opacity:.11;
  filter:saturate(.9) brightness(1.06)}
.sec-bg img.flip{transform:scaleX(-1)}
.sec-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.78) 0%,rgba(255,255,255,.42) 42%,rgba(255,255,255,.88) 100%)}
/* 首屏 Ken Burns 缩放动画在窄屏会把图片盒撑出 6~12px，裁切掉 */
.hero-bg{overflow:hidden}