/* roulang page: index */
:root{
  --blue:#2F6FED;--blue-dark:#174EA6;--blue-hover:#1F5BD7;--blue-light:#EAF2FF;
  --bg-soft:#F7FAFF;--bg-sec:#EEF5FF;--orange:#F2994A;
  --text:#172B4D;--text2:#5D6F88;--text3:#8A9AB0;--border:#E2EBF7;
  --r:16px;--r-sm:12px;--r-btn:10px;
  --shadow:0 10px 30px rgba(23,43,77,.06);--shadow-h:0 18px 40px rgba(23,43,77,.12);
}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",Arial,sans-serif;color:var(--text);background:#fff;font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{display:block;max-width:100%}
a{color:var(--blue);text-decoration:none;transition:color .22s ease}
button{font-family:inherit}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sec{padding:96px 0}
.sec-soft{background:var(--bg-soft)}
.sec-blue{background:var(--bg-sec)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{font-size:34px;line-height:1.25;font-weight:700;letter-spacing:-.01em;margin-bottom:12px}
.sec-head p{color:var(--text2);font-size:16px}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .22s ease,transform .22s ease,color .22s ease,border-color .22s ease;min-height:44px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--blue)}
.btn-ghost:hover{background:var(--blue-light);color:var(--blue-dark)}
.btn:focus-visible,.arrow-link:focus-visible,.icon-btn:focus-visible,a:focus-visible{outline:3px solid rgba(47,111,237,.28);outline-offset:2px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--blue)}
.arrow-link .i{transition:transform .22s ease}
.arrow-link:hover .i{transform:translateX(4px)}
.chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--blue-light);color:var(--blue-dark);font-size:13px;font-weight:500}

/* header */
.hd{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.97);border-bottom:1px solid var(--border);transition:box-shadow .24s ease}
.hd.scrolled{box-shadow:0 6px 18px rgba(23,43,77,.07)}
.hd-in{height:76px;display:flex;align-items:center;gap:26px;max-width:1200px;margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:700;color:var(--text);letter-spacing:-.01em;flex-shrink:0}
.brand-mark{width:30px;height:30px;flex-shrink:0}
.nav{display:flex;align-items:center;gap:2px}
.nav>li{position:relative}
.nav a{display:inline-flex;align-items:center;height:40px;padding:0 12px;font-size:15px;font-weight:500;color:var(--text);border-radius:8px}
.nav a:hover{color:var(--blue)}
.nav .active{color:var(--blue)}
.nav .active::after{content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--blue)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--orange);display:inline-block;margin-right:6px;flex-shrink:0}
.dd-panel{position:absolute;top:100%;left:0;width:340px;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-h);padding:10px;display:grid;grid-template-columns:1fr 1fr;gap:2px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,visibility .2s}
.nav>li:hover .dd-panel,.nav>li:focus-within .dd-panel{opacity:1;visibility:visible;transform:translateY(0)}
.dd-panel a{height:36px;font-size:14px;color:var(--text2);font-weight:400;padding:0 10px}
.dd-panel a:hover{background:var(--bg-soft);color:var(--blue)}
.hd-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.icon-btn{width:40px;height:40px;display:grid;place-items:center;border-radius:10px;border:1px solid transparent;background:transparent;color:var(--text2);transition:background .2s ease,color .2s ease}
.icon-btn:hover{background:var(--blue-light);color:var(--blue)}
.text-link{font-size:15px;font-weight:500;color:var(--text2)}
.text-link:hover{color:var(--blue)}
.hd .btn{height:42px;font-size:15px;padding:0 20px}
.burger{display:none}
.search-bar{display:none;border-top:1px solid var(--border);background:#fff}
.search-bar.open{display:block}
.search-in{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.search-in input{flex:1;min-width:220px;height:44px;border:1px solid var(--border);border-radius:var(--r-btn);padding:0 16px;font-size:15px;color:var(--text);background:var(--bg-soft)}
.search-in input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,111,237,.15)}
.hot-word{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text3)}
.hot-word a{font-size:13px;color:var(--text2);padding:4px 10px;border-radius:999px;background:var(--bg-soft)}
.hot-word a:hover{color:var(--blue);background:var(--blue-light)}

/* off canvas */
.off-canvas{background:#fff;width:300px}
.oc-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border)}
.oc-close{width:40px;height:40px;display:grid;place-items:center;background:var(--bg-soft);border:none;border-radius:10px;color:var(--text2);font-size:20px;line-height:1}
.oc-nav{padding:12px 12px 20px}
.oc-nav a{display:block;padding:12px 14px;font-size:16px;color:var(--text);border-radius:10px;min-height:44px}
.oc-nav a:hover,.oc-nav a.active{background:var(--blue-light);color:var(--blue-dark)}
.oc-sub{padding:2px 0 8px 14px}
.oc-sub a{font-size:14px;color:var(--text2);padding:8px 14px}
.oc-cta{padding:0 20px 28px}
.oc-cta .btn{width:100%}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--bg-soft);padding:84px 0 92px}
.hero::before{content:"";position:absolute;inset:0;background:url("/assets/images/8f5d13169d40cbd6.jpg") center/cover no-repeat;opacity:.07}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 88% 12%,rgba(47,111,237,.12),transparent 55%)}
.hero-in{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;min-height:520px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:13px;font-weight:500;color:var(--text2)}
.hero h1{font-size:clamp(40px,5vw,60px);line-height:1.12;font-weight:700;letter-spacing:-.02em;margin:20px 0 18px}
.hero-sub{font-size:17px;color:var(--text2);max-width:540px}
.hero-cta{display:flex;gap:14px;margin:30px 0 26px;flex-wrap:wrap}
.hero-tags{display:flex;gap:22px;flex-wrap:wrap}
.hero-tags li{display:flex;align-items:center;gap:7px;font-size:14px;color:var(--text2)}
.hero-tags li::before{content:"";width:16px;height:16px;border-radius:50%;background:var(--blue-light);box-shadow:inset 0 0 0 1px rgba(47,111,237,.25);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.4l2.6 2.6L12 5.6' fill='none' stroke='%232F6FED' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-size:14px;background-position:center;background-repeat:no-repeat}
.hero-visual{position:relative}
.preview{position:relative;border-radius:20px;overflow:hidden;box-shadow:0 24px 60px rgba(23,43,77,.14);background:#dfe9fa}
.preview img{width:100%;aspect-ratio:16/9;object-fit:cover}
.badge-live{position:absolute;top:16px;left:16px;display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;background:var(--orange);color:#fff;font-size:13px;font-weight:600}
.badge-live::before{content:"";width:6px;height:6px;border-radius:50%;background:#fff}
.play{position:absolute;inset:0;margin:auto;width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;box-shadow:0 8px 24px rgba(23,43,77,.2)}
.play::before{content:"";width:0;height:0;border-left:16px solid var(--blue);border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px}
.float-card{position:absolute;right:-12px;bottom:-26px;width:250px;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-h);padding:16px 18px}
.fc-title{display:block;font-size:15px;font-weight:600;color:var(--text)}
.fc-sub{display:block;font-size:13px;color:var(--text3);margin:4px 0 10px}

/* channels */
.ch-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.ch-card{grid-column:span 3;display:flex;flex-direction:column;gap:14px;padding:22px;background:#fff;border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease}
.ch-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.ch-card.big{grid-column:span 6;padding:0;overflow:hidden}
.ch-thumb{overflow:hidden}
.ch-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.ch-card.big .ch-body{padding:22px 24px 24px}
.ch-card.big:hover .ch-thumb img{transform:scale(1.03)}
.ch-thumb img{transition:transform .3s ease}
.ch-icon{width:44px;height:44px;border-radius:12px;background:var(--blue-light);color:var(--blue-dark);display:grid;place-items:center;font-size:17px;font-weight:700}
.ch-body h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:6px}
.ch-body p{font-size:15px;color:var(--text2);margin-bottom:12px}
.ch-all{display:inline-flex;align-items:center;gap:8px;margin-top:28px;font-size:15px;font-weight:600;color:var(--blue);min-height:44px}
.ch-all:hover .i{transform:translateX(4px)}

/* live rail */
.live-rail{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.live-card{background:#fff;border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease;display:flex;flex-direction:column}
.live-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.live-thumb{position:relative;display:block;overflow:hidden}
.live-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.live-card:hover .live-thumb img{transform:scale(1.03)}
.tag-live{position:absolute;top:12px;left:12px;height:24px;padding:0 10px;border-radius:999px;background:var(--orange);color:#fff;font-size:12px;font-weight:700;display:inline-flex;align-items:center;letter-spacing:.04em}
.live-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.live-body h3{font-size:18px;font-weight:600;line-height:1.45}
.live-body h3 a{color:var(--text)}
.live-body h3 a:hover{color:var(--blue)}

/* stats */
.stat-panel{background:var(--bg-sec);border-radius:24px;padding:48px 40px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:0 26px;text-align:center;border-right:1px solid #D8E5FA}
.stat-item:last-child{border-right:none}
.stat-num{display:block;font-size:44px;line-height:1.1;font-weight:700;color:var(--blue);letter-spacing:-.02em}
.stat-label{display:block;margin-top:10px;font-size:14px;color:var(--text2)}

/* flow tabs */
.flow-top{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:36px;flex-wrap:wrap}
.flow-top .sec-head{margin-bottom:0}
.tabs{display:inline-flex;gap:4px;background:var(--bg-soft);border:1px solid var(--border);border-radius:999px;padding:4px;border-bottom:none}
.tabs-title a{display:inline-flex;align-items:center;height:40px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:500;color:var(--text2)}
.tabs-title a[aria-selected="true"]{background:var(--blue);color:#fff}
.tabs-title a:hover{color:var(--blue)}
.tabs-title a[aria-selected="true"]:hover{color:#fff}
.tabs-panel{padding:0;background:transparent}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-sm);padding:22px 20px;box-shadow:0 4px 14px rgba(23,43,77,.04)}
.step:not(:last-child)::after{content:"";position:absolute;top:38px;right:-20px;width:20px;height:2px;background:#D9E6FA}
.step-num{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:15px;font-weight:600;background:#fff;border:1px solid #C9D9F0;color:var(--text3);margin-bottom:14px}
.step.done .step-num{background:var(--blue-light);border-color:var(--blue-light);color:var(--blue)}
.step.cur .step-num{background:var(--blue);border-color:var(--blue);color:#fff}
.step h4{font-size:17px;font-weight:600;margin-bottom:6px}
.step p{font-size:14px;color:var(--text2)}

/* cases */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.case-thumb{overflow:hidden;background:#dfe9fa}
.case-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s ease}
.case-card:hover .case-thumb img{transform:scale(1.04)}
.case-tall{grid-row:span 2}
.case-tall .case-thumb{flex:1;display:flex}
.case-tall .case-thumb img{aspect-ratio:auto;height:100%;min-height:300px}
.case-info{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.case-info h3{font-size:18px;font-weight:600;line-height:1.45}
.case-info p{font-size:14px;color:var(--text2)}
.case-wide{grid-column:span 3;flex-direction:row}
.case-wide .case-thumb{width:45%;flex-shrink:0}
.case-wide .case-thumb img{aspect-ratio:auto;height:100%;min-height:220px}
.case-wide .case-info{justify-content:center;padding:26px 32px}

/* interaction bento */
.bento-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.bento-side{position:sticky;top:104px}
.bento{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.bento-card{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:26px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;display:block}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.bento-card.warm{background:#FEF3E8;border-color:#F8DCC0}
.bento-icon{width:46px;height:46px;border-radius:12px;background:var(--blue-light);display:grid;place-items:center;margin-bottom:16px;color:var(--blue);font-size:19px;font-weight:700}
.bento-card.warm .bento-icon{background:#fff;color:var(--orange)}
.bento-card h3{font-size:19px;font-weight:600;margin-bottom:8px;color:var(--text)}
.bento-card p{font-size:15px;color:var(--text2)}

/* news */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:36px;align-items:start}
.news-lead{display:block;background:#fff;border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease}
.news-lead:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.news-lead img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-lead-body{padding:22px 24px 26px}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text3);margin-bottom:10px}
.news-lead-body h3{font-size:22px;font-weight:600;line-height:1.4;margin-bottom:10px}
.news-lead-body p{font-size:15px;color:var(--text2)}
.news-list li{border-bottom:1px solid var(--border)}
.news-list li:first-child{border-top:1px solid var(--border)}
.news-list a{display:flex;gap:16px;align-items:baseline;padding:18px 4px;min-height:44px}
.news-list a:hover .news-title{color:var(--blue)}
.news-list a:hover .news-date{color:var(--blue)}
.news-date{font-size:13px;color:var(--text3);flex-shrink:0;width:76px;transition:color .2s ease}
.news-title{font-size:15px;color:var(--text);font-weight:500;flex:1;transition:color .2s ease}
.news-more{margin-top:22px}

/* partners */
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.partner-chip{display:flex;align-items:center;justify-content:center;height:64px;padding:0 16px;background:#fff;border:1px solid var(--border);border-radius:var(--r-sm);font-size:15px;color:var(--text2);font-weight:500;transition:all .22s ease;text-align:center}
.partner-chip:hover{color:var(--blue);border-color:#C7DCFB;transform:translateY(-3px);box-shadow:0 10px 24px rgba(23,43,77,.08)}

/* testimonials */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.quote-card{background:#fff;border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);padding:28px 26px;transition:transform .22s ease,box-shadow .22s ease}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.quote-card.lift{margin-top:28px}
.quote-mark{font-size:40px;line-height:1;color:var(--blue-light);font-weight:700;margin-bottom:10px}
.quote-card p{font-size:15px;color:var(--text);margin-bottom:20px}
.quote-user{display:flex;align-items:center;gap:12px}
.avatar{width:40px;height:40px;border-radius:12px;background:var(--blue-light);color:var(--blue);display:grid;place-items:center;font-size:15px;font-weight:700;flex-shrink:0}
.avatar.alt{background:#FEF3E8;color:var(--orange)}
.quote-name{font-size:15px;font-weight:600;color:var(--text)}
.quote-role{font-size:13px;color:var(--text3)}

/* devices */
.device-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.feature-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--border);align-items:flex-start}
.feature-list li:last-child{border-bottom:none}
.f-ico{width:34px;height:34px;border-radius:10px;background:var(--blue-light);color:var(--blue);display:grid;place-items:center;flex-shrink:0;font-size:13px;font-weight:700}
.feature-list h4{font-size:16px;font-weight:600;margin-bottom:2px}
.feature-list p{font-size:14px;color:var(--text2)}
.devices{position:relative;height:400px}
.device{position:absolute;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.device-bar{height:22px;background:var(--bg-soft);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:4px;padding:0 8px}
.device-bar i{width:6px;height:6px;border-radius:50%;background:#C9D9F0;display:block}
.device img{width:100%;height:100%;object-fit:cover}
.dev-desktop{left:0;top:20px;width:74%;height:250px}
.dev-desktop img{height:calc(100% - 22px)}
.dev-tablet{right:0;top:0;width:44%;height:200px}
.dev-tablet img{height:calc(100% - 22px)}
.dev-phone{right:14%;bottom:0;width:32%;height:210px;border-radius:18px}
.dev-phone img{height:calc(100% - 22px)}

/* faq */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:start}
.faq-side p{color:var(--text2);margin-top:12px;font-size:15px}
.accordion{border:none;background:transparent;margin:0}
.accordion-item{border:1px solid var(--border);border-radius:14px;background:#fff;margin-bottom:12px;overflow:hidden;box-shadow:0 4px 14px rgba(23,43,77,.04);transition:border-color .2s ease,box-shadow .2s ease}
.accordion-item.is-active{border-color:#C7DCFB;box-shadow:0 10px 26px rgba(23,43,77,.08)}
.accordion-title{display:block;position:relative;padding:18px 58px 18px 22px;font-size:16px;font-weight:600;color:var(--text);border:none;background:transparent;min-height:44px}
.accordion-title:hover{color:var(--blue);background:transparent}
.accordion-title::before{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);width:auto;height:auto;margin:0;font-size:22px;font-weight:400;color:var(--blue);line-height:1;border:none;background:none}
.accordion-item.is-active .accordion-title::before{content:"–"}
.accordion-content{padding:0 22px 20px;border:none;background:transparent;color:var(--text2);font-size:15px}

/* guarantee */
.guard{background:var(--bg-sec);padding:56px 0}
.guard h2{font-size:24px;font-weight:700;text-align:center;margin-bottom:32px}
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.guard-item{display:flex;gap:14px;align-items:flex-start}
.guard-ico{width:40px;height:40px;border-radius:12px;background:#fff;color:var(--blue);display:grid;place-items:center;flex-shrink:0;font-size:15px;font-weight:700;box-shadow:0 4px 14px rgba(23,43,77,.05)}
.guard-item h3{font-size:16px;font-weight:600;margin-bottom:2px}
.guard-item p{font-size:14px;color:var(--text2)}

/* cta */
.cta-panel{background:linear-gradient(180deg,#F2F7FF 0%,#EAF2FF 100%);border:1px solid #DCE8FC;border-radius:24px;padding:52px 48px}
.cta-grid{display:grid;grid-template-columns:6fr 6fr;gap:52px;align-items:start}
.cta-left h2{font-size:34px;line-height:1.25;font-weight:700;margin-bottom:16px}
.cta-left p{color:var(--text2);margin-bottom:14px}
.cta-contact{display:flex;flex-direction:column;gap:8px;margin:24px 0;font-size:15px;color:var(--text2)}
.cta-contact strong{color:var(--text);font-weight:600}
.form-card{background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;height:48px;border:1px solid var(--border);border-radius:var(--r-btn);padding:0 15px;font-size:15px;font-family:inherit;color:var(--text);background:#fff;transition:border-color .2s ease,box-shadow .2s ease}
.field textarea{height:104px;padding:12px 15px;resize:vertical;line-height:1.6}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,111,237,.16)}
.field input.is-invalid,.field select.is-invalid,.field textarea.is-invalid{border-color:#D9534F}
.err{display:none;font-size:13px;color:#D9534F;margin-top:5px}
.form-note{display:none;font-size:14px;color:#1F9D7A;margin-top:14px}
.form-tip{font-size:13px;color:var(--text3);margin-top:12px}
.form-card .btn{width:100%}

/* footer */
.ft{background:#FBFCFE;border-top:1px solid var(--border);padding:64px 0 0}
.ft-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.ft-brand{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:700;color:var(--text);margin-bottom:14px}
.ft-brand .brand-mark{width:26px;height:26px}
.ft-desc{font-size:14px;color:var(--text2);max-width:300px}
.ft h3{font-size:15px;font-weight:600;color:var(--text);margin-bottom:14px}
.ft-links li{margin-bottom:2px}
.ft-links a{display:inline-flex;align-items:center;min-height:34px;font-size:14px;color:var(--text2)}
.ft-links a:hover{color:var(--blue)}
.ft-bottom{margin-top:48px;border-top:1px solid var(--border);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text3)}

/* responsive */
@media screen and (max-width:1024px){
  .sec{padding:72px 0}
  .sec-head h2{font-size:30px}
  .hd-in{height:68px;gap:16px}
  .nav,.hd-right .text-link,.hd-right .btn{display:none}
  .burger{display:grid}
  .hero{padding:56px 0 72px}
  .hero-in{grid-template-columns:1fr;gap:48px;min-height:0}
  .hero h1{font-size:clamp(34px,6vw,48px)}
  .float-card{right:12px;bottom:-20px}
  .ch-grid{grid-template-columns:repeat(6,1fr)}
  .ch-card{grid-column:span 3}
  .ch-card.big{grid-column:span 6}
  .live-rail{grid-template-columns:repeat(2,1fr)}
  .stat-panel{padding:36px 24px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .stat-item{padding:20px 12px;border-right:none;border-bottom:1px solid #D8E5FA}
  .stat-item:nth-child(2n){border-right:none}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none}
  .steps{grid-template-columns:1fr 1fr}
  .step:nth-child(2)::after{display:none}
  .case-grid{grid-template-columns:1fr 1fr}
  .case-tall{grid-row:span 1}
  .case-turn... 
  .case-wide{grid-column:span 2}
  .bento-wrap{grid-template-columns:1fr;gap:32px}
  .bento-side{position:static}
  .news-grid{grid-template-columns:1fr;gap:32px}
  .partner-grid{grid-template-columns:repeat(3,1fr)}
  .quote-grid{grid-template-columns:1fr 1fr}
  .quote-card.lift{margin-top:0}
  .device-wrap{grid-template-columns:1fr;gap:40px}
  .devices{height:360px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .guard-grid{grid-template-columns:1fr 1fr;gap:20px}
  .cta-panel{padding:40px 28px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .cta-left h2{font-size:30px}
  .ft-grid{grid-template-columns:1fr 1fr}
}
@media screen and (max-width:768px){
  .sec{padding:64px 0}
  .wrap{padding:0 20px}
  .hd-in{padding:0 20px}
  .hero h1{font-size:36px}
  .hero-sub{font-size:16px}
  .ch-grid{gap:16px}
  .ch-card{grid-column:span 6;padding:18px}
  .ch-card.big{grid-column:span 6}
  .live-rail{display:flex;overflow-x:auto;gap:16px;scroll-snap-type:x mandatory;padding-bottom:14px;margin:0 -20px;padding-left:20px;padding-right:20px}
  .live-card{min-width:76%;scroll-snap-align:start;flex-shrink:0}
  .steps{grid-template-columns:1fr}
  .step::after{display:none}
  .case-grid{grid-template-columns:1fr;gap:18px}
  .case-wide{flex-direction:column;grid-column:span 1}
  .case-wide .case-thumb{width:100%}
  .case-wide .case-thumb img{min-height:200px}
  .case-tall .case-thumb img{min-height:220px}
  .partner-grid{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .devices{height:320px}
  .de. 
  .dev-desktop{width:78%;height:210px}
  .dev-tablet{width:42%;height:170px}
  .dev-phone{width:34%;height:180px;right:8%}
  .guard-grid{grid-template-columns:1fr}
  .cta-panel{padding:32px 20px;border-radius:18px}
  .form-card{padding:22px}
  .ft-grid{grid-template-columns:1fr 1fr;gap:28px}
  .ft-bottom{margin-top:32px}
}
@media screen and (max-width:520px){
  .sec{padding:56px 0}
  .wrap{padding:0 16px}
  .hd-in{padding:0 16px}
  .brand{font-size:18px}
  .hero{padding:44px 0 60px}
  .hero h1{font-size:30px}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .hero-tags{gap:14px}
  .float-card{position:static;width:auto;margin-top:14px;right:auto;bottom:auto}
  .sec-head h2{font-size:30px}
  .ch-card,.ch-card.big{grid-column:span 6}
  .ch-card p{font-size:14px}
  .stat-num{font-size:34px}
  .stat-panel{padding:24px 8px;border-radius:18px}
  .live-card{min-width:84%}
  .news-lead-body h3{font-size:19px}
  .news-date{width:64px;font-size:12px}
  .devices{height:270px}
  .dev-desktop{width:80%;height:170px}
  .dev-tablet{width:44%;height:140px}
  .dev-phone{width:36%;height:150px}
  .cta-left h2{font-size:26px}
  .ft-grid{grid-template-columns:1fr}
  .quote-card{padding:22px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}