@charset "UTF-8";
/* 梦云智创：统一字体、内容网格与半透明分区，无外部依赖。 */
:root{
 --ink:#0e1924;--ink-2:#172838;--ink-3:#2b3e4f;--paper:#f7f9fb;--paper-2:#edf2f6;--sand:#e8ecef;--white:#fff;
 --text:#1d282f;--text-soft:#45525c;--muted:#50616e;--muted-dark:#bdc8d1;
 --brass:#275d82;--brass-light:#b0d8f1;--brass-pale:#e4eff7;
 --line:rgba(38,62,88,.16);--line-strong:rgba(38,62,88,.27);--ink-line:rgba(224,235,247,.2);--ink-line-soft:rgba(224,235,247,.12);
 --surface:rgba(249,250,251,.94);--surface-alt:rgba(237,241,244,.94);--surface-dark:rgba(16,25,33,.92);
 --sans:"HarmonyOS Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;--sans-light:var(--sans);--mono:Consolas,"SFMono-Regular",monospace;
 --max:1248px;--gutter:clamp(24px,5vw,72px);--pad:clamp(72px,8vw,112px);--header-h:88px;--radius:4px;--ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 24px);-webkit-text-size-adjust:100%}
body{margin:0;isolation:isolate;background:var(--ink);color:var(--text);font:400 16px/1.8 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
body.is-locked{overflow:hidden}
.site-atmosphere{position:fixed;inset:0;z-index:-1;pointer-events:none;background:url("./assets/business-skyline.webp") 62% center/cover no-repeat;filter:grayscale(.65);opacity:.18}
img,svg{display:block}img{max-width:100%}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}ul,ol{padding:0;list-style:none}dl,dd{margin:0}
a{color:inherit;text-decoration:none}button{border:0;background:none;font:inherit;color:inherit;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}button:disabled{cursor:not-allowed}[hidden]{display:none!important}
::selection{background:var(--brass);color:white}
:focus-visible{outline:2px solid var(--brass);outline-offset:4px}
.on-dark :focus-visible,.hero :focus-visible,.band :focus-visible,.site-header :focus-visible,.site-footer :focus-visible,.nav-panel :focus-visible{outline-color:var(--brass-light)}
.wrap{width:min(var(--max),calc(100% - var(--gutter)*2));margin-inline:auto}
.icon{width:18px;height:18px;flex:0 0 auto}
.skip-link{position:fixed;left:24px;top:-100px;z-index:100;background:white;color:var(--ink);padding:12px 20px;border-radius:4px}.skip-link:focus{top:12px}
h1.display{font:400 clamp(36px,3.4vw,48px)/1.4 var(--sans);letter-spacing:.015em;color:#f2f6f9}
h2.section-title{font:400 clamp(28px,2.7vw,38px)/1.5 var(--sans);letter-spacing:.02em;max-width:100%;text-wrap:balance}
:lang(zh-CN) .title-phrase{display:inline-block;white-space:nowrap}
h3{font-size:19px;font-weight:500;line-height:1.6}h4{font-size:16px;font-weight:500;line-height:1.5}
p{color:var(--text-soft)}.lead{font-size:17px;line-height:1.9}
.eyebrow{color:var(--brass);font-size:14px;font-weight:400;line-height:1.5;letter-spacing:.08em;margin-bottom:20px}.eyebrow .idx{display:none}
.small,.note-line,.section-note{font-size:13px;line-height:1.8}.note-line,.section-note{color:var(--muted);margin-top:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:14px;min-height:48px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius);font-size:14px;line-height:1.5;font-weight:500;text-align:center;transition:background .2s,border-color .2s,color .2s}
.btn .icon{width:16px;height:16px}.btn-primary{background:var(--ink);color:white}.btn-primary:hover{background:var(--ink-3)}
.btn-brass,.btn-light{background:var(--paper);color:var(--ink)}.btn-brass:hover,.btn-light:hover{background:var(--brass-pale)}
.btn-outline{border-color:rgba(255,255,255,.48);color:white}.btn-outline:hover{background:rgba(255,255,255,.09);border-color:white}
.btn-outline-dark{border-color:var(--line-strong);color:var(--text)}.btn-outline-dark:hover{background:var(--paper-2)}
.btn-ghost{padding-inline:0;color:var(--brass);border:0;justify-content:flex-start}.btn-ghost:hover{color:var(--ink)}
.on-dark .btn-ghost{color:var(--brass-light)}.on-dark .btn-ghost:hover{color:white}
.actions,.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.product-actions{margin-top:26px}
.link-line{display:inline-flex;align-items:center;gap:14px;min-height:44px;color:var(--brass);font-size:14px;font-weight:500}.link-line:hover{color:var(--ink)}

/* Navigation */
.site-header{position:fixed;inset:0 0 auto;z-index:60;height:var(--header-h);color:white;background:rgba(11,18,24,.62);transition:background .25s,box-shadow .25s;border-bottom:1px solid rgba(255,255,255,.12)}
.site-header.is-solid{background:rgba(14,25,36,.98);box-shadow:0 1px 0 rgba(255,255,255,.1)}
.header-inner{height:100%;display:flex;align-items:center;gap:28px}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{display:block;background:currentColor;-webkit-mask:url("./assets/logo.svg") center/contain no-repeat;mask:url("./assets/logo.svg") center/contain no-repeat}
.brand-mark{width:38px;height:38px;color:white}.brand-text{display:grid;gap:4px}
.brand-name{font-size:23px;font-weight:500;line-height:1.2;letter-spacing:.1em}.brand-sub{font-size:9px;font-weight:500;line-height:1.2;letter-spacing:.12em;color:#c3cedb}
.nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;display:flex;align-items:center;min-height:44px;font-size:14px;font-weight:400;color:#d9e1e7;white-space:nowrap}
.nav-link::after{content:"";position:absolute;height:2px;inset:auto 0 2px;background:var(--brass-light);transform:scaleX(0);transform-origin:left;transition:transform .2s}
.nav-link:hover,.nav-link.is-active{color:white}.nav-link.is-active::after{transform:scaleX(1)}
.header-tools{display:flex;align-items:center;gap:20px}.lang-btn{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-size:12px}.lang-btn .icon{width:15px;height:15px}
.header-cta{min-height:40px;padding:0 17px;font-size:13px}.burger{display:none;align-items:center;justify-content:center;width:44px;height:44px}
.burger span,.burger span::before,.burger span::after{display:block;position:relative;height:1px;width:23px;background:white}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;transition:transform .2s}.burger span::before{top:-7px}.burger span::after{top:7px}
.burger[aria-expanded="true"] span{background:transparent}.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}
.nav-panel{position:fixed;inset:0;z-index:55;padding:calc(var(--header-h) + 28px) var(--gutter) 32px;display:flex;flex-direction:column;background:var(--ink);color:white;overflow-y:auto;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);transition:opacity .2s,transform .2s}
.nav-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.nav-panel>a{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--ink-line-soft);font-size:21px}
.nav-panel>a .idx{font-size:12px;color:var(--muted-dark)}.nav-panel>a.is-active{color:var(--brass-light)}
.nav-panel-foot{display:grid;gap:14px;margin-top:auto;padding-top:28px}

/* Full-width business photography; no hardware mockup. */
.hero{position:relative;isolation:isolate;overflow:hidden;display:flex;flex-direction:column;min-height:min(94svh,920px);padding-top:var(--header-h);background:#10171d;color:white}
.hero-media{position:absolute;inset:0;z-index:-2;pointer-events:none}
.hero-media-fixed{position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,19,29,.94) 0%,rgba(9,19,29,.84) 25%,rgba(9,19,29,.5) 50%,rgba(9,19,29,.08) 82%),linear-gradient(0deg,rgba(9,17,25,.6),transparent 50%),url("./assets/business-skyline.webp") 60% 50%/cover no-repeat;filter:saturate(.58)}
@supports(clip-path:inset(0)){@media(min-width:761px) and (prefers-reduced-motion:no-preference){.hero-media-clip{clip-path:inset(0)}.hero-media-fixed{position:fixed;transform:translateZ(0)}}}
.hero-inner{flex:1;display:flex;align-items:center;padding-block:88px 96px}
.hero-copy{min-width:0;max-width:760px}.hero-brand-line{color:#c3d3df;font-size:13px;font-weight:400;letter-spacing:.08em;margin-bottom:22px}
.hero-title-main,.hero-title-support{display:block}.hero-title-main{text-wrap:balance}.hero-title-support{margin-top:10px;font-size:clamp(23px,1.9vw,28px);line-height:1.6;font-weight:400;letter-spacing:.025em;color:#c5d4df}
.hero-lead{max-width:540px;font-size:17px;line-height:1.95;color:#d7dfe5;margin-top:24px}
.hero-actions{margin-top:36px;gap:16px}.hero-actions .btn{min-height:50px;padding-inline:26px}.hero-actions .btn-outline{background:rgba(9,17,25,.16)}
:lang(en) h1.display{font-size:clamp(34px,3.2vw,46px);letter-spacing:-.015em;line-height:1.35}:lang(en) .hero-title-support{font-size:clamp(20px,1.65vw,24px);letter-spacing:0;max-width:40ch}
.hero-rail{border-top:1px solid rgba(225,234,241,.22);background:rgba(12,22,30,.68)}
.rail-grid{width:min(var(--max),calc(100% - var(--gutter)*2));margin-inline:auto;display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.rail-item{display:grid;grid-template-columns:1fr auto;gap:6px 16px;padding:23px 28px;border-right:1px solid var(--ink-line-soft)}
.rail-item:first-child{padding-left:0}.rail-item:last-child{border:0;padding-right:0}.rail-no{display:none}
.rail-title{color:#edf3fa;font-size:15px;font-weight:500}.rail-note{color:#aebdce;font-size:12px;line-height:1.7;grid-column:1}
.rail-item .ar{width:15px;color:var(--brass-light);grid-column:2;grid-row:1/span 2;align-self:center}.rail-item:hover .rail-title{color:var(--brass-light)}

/* Background alpha applies only to surfaces, never to foreground text. */
.section{background:var(--surface);padding:var(--pad) 0}.section-sand,.selection-section,.contact-section{background:var(--surface-alt)}
.section-ink,.section.on-dark{background:var(--surface-dark);color:white}.on-dark p{color:#c1cedd}.on-dark .eyebrow{color:var(--brass-light)}.on-dark h2,.on-dark h3{color:#f3f7fc}
.section-head,.caps-head{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:80px;align-items:start;margin-bottom:42px}
.section-head>p,.caps-head>p{padding-top:42px;max-width:48ch;font-size:16px}
.intro-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:100px;align-items:start}.intro-grid .lead{margin-top:22px;max-width:40ch;font-size:16px}
.needs-list{border-top:1px solid var(--line-strong)}.needs-item{padding:23px 0;border-bottom:1px solid var(--line)}.needs-item dt{font-size:17px;font-weight:500}.needs-item dd{color:var(--text-soft);font-size:14px;line-height:1.8;margin-top:8px}
.audience{margin-top:48px;padding-top:28px;border-top:1px solid var(--line-strong);display:grid;grid-template-columns:120px minmax(0,1fr);gap:32px}
.audience-label{color:var(--brass);font-size:13px;font-weight:500}.audience-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.audience-item h3{font-size:15px;line-height:1.6}.audience-item p{font-size:13px;margin-top:8px}
.product-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:88px;align-items:center}
#voice .product-copy{grid-column:2;grid-row:1}#voice .product-media{grid-column:1;grid-row:1}
.product-copy,.product-media{min-width:0}.product-copy h2{margin-bottom:22px}.product-copy>p{font-size:16px;line-height:1.9;max-width:45ch}
.feature-rows{margin-top:28px;border-top:1px solid var(--line-strong)}
.feature-row{display:grid;grid-template-columns:100px minmax(0,1fr);gap:18px;padding:17px 0;border-bottom:1px solid var(--line)}
.feature-row dt{font-size:14px;font-weight:500}.feature-row dd{color:var(--text-soft);font-size:14px}
.on-dark .feature-rows,.on-dark .feature-row{border-color:var(--ink-line-soft)}.on-dark .feature-row dd{color:#b9c9db}
.product-media{position:relative}.product-media .photo{width:100%;aspect-ratio:4/3;object-fit:cover;filter:grayscale(.65);border-radius:2px}.photo-focus-top{object-position:62% 24%}
.ui-stage{padding:0;background:transparent;border-radius:0}
.ui-stage-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px;color:#bcd8ea;font-size:13px}.ui-stage-head span:last-child{font-size:12px}
.ui-stage-foot{display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between;font-size:12px;color:#b1c3d5;margin-top:22px}
.demo-card{overflow:hidden;background:#fff;color:var(--text);border-radius:2px}
.card-bar{display:flex;justify-content:space-between;align-items:center;padding:17px 18px;border-bottom:1px solid #e0e7ee;background:#f7f9fb;gap:10px}
.card-bar .who{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:500}.dot{width:5px;height:5px;border-radius:50%;background:var(--brass)}.stamp{font-size:11px;color:#66778b;white-space:nowrap}
.scene-tabs{display:flex;flex-wrap:wrap;gap:4px 12px;padding:12px 18px}.scene-tabs button{min-height:36px;padding:4px 2px;font-size:12px;color:#52677d;border-bottom:2px solid transparent}
.scene-tabs button[aria-selected="true"]{color:#172c40;font-weight:500;border-color:#416f89}
.msg-body{padding:7px 18px 20px}.msg-bubble{border-radius:9px;background:#edf2f7;padding:16px;min-height:110px;color:#30465c!important;font-size:14px;line-height:1.9}
.msg-meta{display:flex;justify-content:space-between;gap:12px;margin-top:14px;font-size:11px;color:#64788b}
.card-foot{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #e1e7ed;padding:14px 18px;font-size:11px;color:#64788b}
.player-card{position:relative;z-index:1;margin:0;width:100%;border-radius:0;padding:24px 28px;background:#17232d;color:white}
.player-top{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:#c1d0e1}
.player-main{display:flex;align-items:center;gap:18px;margin-top:19px}.play-btn{display:grid;place-items:center;flex-shrink:0;width:46px;height:46px;border-radius:50%;background:#d5e7f3;color:#163146}.play-btn:hover{background:white}.play-btn .icon{width:16px;height:16px}
.wave{display:flex;align-items:center;flex:1;min-width:0;gap:3px;height:40px}.wave i{flex:1;min-width:0;background:#758ba4;border-radius:1px}.wave i.is-on{background:#c9e5f6}
.player-meta{display:flex;justify-content:space-between;margin-top:15px;font-size:12px;color:#c4d1e0;font-variant-numeric:tabular-nums}.player-note{margin-top:10px;color:#bacadc;font-size:12px}
.voice-script{margin-top:38px;font-size:14px}.voice-script summary{display:list-item;width:fit-content;cursor:pointer;color:var(--brass);min-height:44px;align-content:center}.voice-script p{max-width:70ch;font-size:14px;line-height:1.9;margin-top:12px}
.outcome-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;border-top:1px solid var(--line-strong);padding-top:24px;margin-top:24px}.outcome-strip dt{font-size:15px;font-weight:500}.outcome-strip dd{font-size:13px;color:var(--text-soft);margin-top:5px}
.selection-matrix{border-top:1px solid var(--line-strong)}.selection-row{display:grid;grid-template-columns:220px minmax(0,1fr);gap:42px;padding:30px 0;border-bottom:1px solid var(--line)}
.selection-row dt{font-size:17px;font-weight:500}.selection-row dd{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:32px}.selection-row p{font-size:14px;line-height:1.85}.selection-question{color:var(--muted)}.selection-answer{color:var(--text)}
.use-cases{border-top:1px solid var(--line-strong)}.use-case{display:grid;grid-template-columns:.8fr .9fr 1.5fr;gap:32px;padding:28px 0;border-bottom:1px solid var(--line)}
.use-case-title h3{font-size:18px;margin-bottom:9px}.channel{font-size:12px;font-weight:500;color:var(--brass)}.use-case-need{font-size:14px}
.use-case dl{display:grid;gap:12px}.use-case dl div{display:grid;grid-template-columns:66px minmax(0,1fr);gap:12px}.use-case dt{font-size:12px;color:var(--brass);padding-top:2px}.use-case dd{font-size:14px;color:var(--text-soft)}
.band{position:relative;isolation:isolate;overflow:hidden;color:white;background:var(--surface-dark);padding-top:var(--pad)}
.band-media{position:absolute;inset:0;z-index:-1;opacity:.2;pointer-events:none}.band-media img{width:100%;height:100%;object-fit:cover;filter:grayscale(1)}
.band-copy{max-width:620px}.band .eyebrow{color:var(--brass-light)}.band .section-title{max-width:100%}
.band-copy>p:not(.eyebrow){font-size:16px;color:#c3d0df;margin-top:22px;max-width:44ch}.band-copy .actions{margin-top:28px}
.req-row{margin-top:48px;border-top:1px solid var(--ink-line);display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.req{padding:26px 24px 30px;border-right:1px solid var(--ink-line-soft)}.req:first-child{padding-left:0}.req:last-child{border:0;padding-right:0}
.req .no{color:#abc7dd;font-size:12px}.req h3{font-size:16px;margin:9px 0}.req p{font-size:13px;color:#bdcbdc}
.integration-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:64px}
.integration-grid>div{min-width:0}
.integration-intro{margin-top:22px;font-size:16px;max-width:46ch}.protocol-list{border-top:1px solid var(--line-strong);margin-top:28px}
.protocol-item{display:grid;grid-template-columns:100px minmax(0,1fr);gap:18px;border-bottom:1px solid var(--line);padding:16px 0}
.protocol-item .p{font-size:13px;font-weight:500;color:var(--brass)}.protocol-item .d{font-size:14px;color:var(--text-soft)}
.integration-flow{display:flex;flex-wrap:wrap;gap:10px 22px;counter-reset:steps;margin-top:24px;font-size:13px;color:var(--text-soft)}
.integration-flow li{counter-increment:steps}.integration-flow li::before{content:counter(steps,decimal-leading-zero);color:var(--brass);margin-right:7px}
.code-panel{min-width:0;background:#172739;color:#d4e1f0;border-radius:6px;overflow:hidden}
.code-top{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px 20px;padding:18px 22px;border-bottom:1px solid var(--ink-line-soft);font-size:12px;color:#bfd0e3}
.code-tabs{display:flex;gap:22px;padding:0 22px;border-bottom:1px solid var(--ink-line-soft)}.code-tabs button{color:#b8c9dd;font-size:12px;min-height:44px;padding:8px 0;border-bottom:2px solid transparent}
.code-tabs button[aria-selected="true"]{color:#edf5fc;border-bottom-color:#a0d4ee}.code-body{margin:0;overflow:auto;padding:24px 22px;max-width:100%;font:12px/1.9 var(--mono);color:#d3e2f3;white-space:pre}
.code-foot{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:13px 22px;border-top:1px solid var(--ink-line-soft);color:#bacce0;font-size:11px}
.copy-btn{display:inline-flex;align-items:center;gap:7px;min-height:36px;color:#dcecf9;font-size:12px}.copy-btn .icon{width:14px;height:14px}
/* Direct contact: honest reserved space for the supplied company QR code. */
.contact-section{background:var(--ink);color:var(--white);border-radius:112px 0 0 0}
.contact-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);align-items:center;gap:clamp(48px,7vw,104px)}
.contact-copy{min-width:0}.contact-copy .eyebrow{color:var(--brass-light)}
.contact-copy .section-title{font-size:clamp(32px,3vw,44px);line-height:1.45;max-width:100%}.contact-copy .title-phrase{display:block}
.contact-copy .lead{margin-top:26px;max-width:44ch;font-size:16px;color:#c6d3df;line-height:1.95}
.contact-topics{display:grid;margin-top:38px;border-top:1px solid var(--ink-line)}
.contact-topics li{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:20px;padding:16px 0;border-bottom:1px solid var(--ink-line-soft);align-items:center}
.contact-topics span{font-size:11px;letter-spacing:.06em;color:#a9c4db}.contact-topics strong{font-size:14px;font-weight:400;color:#edf4fa}
.wecom-panel{width:100%;max-width:420px;justify-self:end;background:#f4f7fa;color:var(--ink);padding:32px 34px 22px;border-radius:32px 32px 64px 8px}
.wecom-heading{display:flex;align-items:center;gap:14px}.wecom-heading h3{font-size:21px;font-weight:500}.wecom-heading p{font-size:12px;color:var(--text-soft);margin-top:2px}
.wecom-symbol{display:grid;place-items:center;width:44px;height:44px;flex-shrink:0;background:var(--brass);color:#fff;border-radius:12px}.wecom-symbol .icon{width:24px;height:24px}
.wecom-qr{width:244px;max-width:100%;aspect-ratio:1;margin:26px auto 22px;padding:14px;background:#fff;border-radius:8px}
.wecom-qr-crop{position:relative;width:100%;aspect-ratio:1;overflow:hidden;border-radius:5px}
/* Show source rectangle (333,710,414,414), with the outer white padding preserving the quiet zone. */
.wecom-qr-source{position:absolute;max-width:none;width:260.869565%;height:auto;left:-80.434783%;top:-171.497585%}
.wecom-caption{text-align:center;max-width:30ch;margin-inline:auto;font-size:12px;line-height:1.8;color:var(--text-soft)}
.wecom-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px 16px;margin-top:26px;padding-top:18px;border-top:1px solid var(--line);font-size:10px;color:#526575}

/* Formal closing */
.site-footer{background:rgba(11,22,35,.97);color:white;padding-top:64px}
.foot-top{display:grid;grid-template-columns:1.65fr 1fr 1fr;gap:72px;padding-bottom:46px}
.foot-brand>p{color:#d1dce8;font-size:16px;margin-top:24px;max-width:30ch}.foot-position{display:block;font-size:12px;color:#a5b7cc;margin-top:10px}
.foot-col{display:grid;align-content:start;gap:8px}.foot-col h3{font-size:14px;color:#edf4fb;margin:3px 0 12px}
.foot-col a{display:flex;align-items:center;min-height:30px;font-size:13px;color:#b7c7da}.foot-col a:hover{color:white}
.foot-bottom{border-top:1px solid var(--ink-line-soft);padding:23px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 32px;color:#a9bbd0;font-size:12px}
.legal{display:flex;align-items:center;flex-wrap:wrap;gap:28px}.legal button{min-height:32px;color:#d3e3f2;font-size:12px}
.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,10px);z-index:90;width:max-content;max-width:calc(100% - 40px);padding:12px 20px;border-radius:5px;background:#17283b;box-shadow:0 10px 30px rgba(0,0,0,.15);color:white;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}.toast.is-visible{opacity:1;transform:translate(-50%,0)}
.dialog{border:0;border-radius:8px;padding:38px;background:white;width:min(480px,calc(100% - 40px));color:var(--text);box-shadow:0 24px 70px rgba(0,0,0,.2)}
.dialog::backdrop{background:rgba(6,16,28,.64)}.dialog-close{position:absolute;top:8px;right:10px;width:40px;height:40px;font-size:25px;color:var(--muted)}
.dialog-icon .icon{width:26px;height:26px;color:var(--brass)}.dialog h2{font-size:23px;line-height:1.5;margin:18px 0 14px}.dialog p{font-size:15px}.dialog-actions{margin-top:24px}
.noscript{padding:120px var(--gutter);color:white;background:var(--ink)}

@media(max-width:1180px){
 .nav{gap:17px}.header-inner{gap:20px}.header-tools{gap:16px}.header-cta{display:none}
}
@media(max-width:1024px){
 :root{--header-h:74px}.nav{display:none}.header-tools{margin-left:auto;gap:16px}.burger{display:flex}
 .hero h1{font-size:38px}.hero-lead{font-size:16px}.hero-inner{padding-block:80px 88px}
 .section-head,.caps-head,.intro-grid,.product-grid,.integration-grid{gap:40px}
 .audience{grid-template-columns:1fr;gap:22px}.audience-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .feature-row{grid-template-columns:1fr;gap:6px}.selection-row{grid-template-columns:180px minmax(0,1fr);gap:28px}.selection-row dd{grid-template-columns:1fr;gap:8px}
 .use-case{grid-template-columns:.7fr 1fr;gap:18px 28px}.use-case dl{grid-column:2}
 .contact-grid{gap:44px}.wecom-panel{padding:28px 24px 22px}.foot-top{gap:42px}
}
@media(max-width:760px){
 :root{--header-h:68px;--gutter:24px;--pad:64px}
 .brand-name{font-size:20px}.brand-mark{width:32px;height:32px}.brand-sub{display:none}.brand{gap:9px}
 .hero{min-height:740px}.hero-inner{padding:80px 0 72px}.hero-copy{max-width:100%}
 .hero h1{font-size:clamp(28px,8.2vw,34px);line-height:1.45;letter-spacing:.01em}:lang(en) .hero h1{font-size:clamp(28px,7.8vw,34px);line-height:1.35}
 .hero-title-support,:lang(en) .hero-title-support{font-size:20px;line-height:1.6;margin-top:12px;letter-spacing:0}
 .hero-brand-line{font-size:12px;margin-bottom:20px;letter-spacing:.04em}.hero-lead{margin-top:22px;max-width:34ch;font-size:16px;line-height:1.85}
 .hero-actions{margin-top:30px;gap:12px}.hero-actions .btn{font-size:13px;min-height:48px;padding:0 18px}
 .rail-grid{grid-template-columns:1fr}.rail-item,.rail-item:first-child,.rail-item:last-child{padding:18px 0;border-right:0;border-bottom:1px solid var(--ink-line-soft)}.rail-item:last-child{border-bottom:0}.rail-title{font-size:14px}.rail-note{font-size:12px}
 h2.section-title{font-size:28px;line-height:1.5;max-width:100%}.eyebrow{margin-bottom:15px;font-size:12px}
 .section-head,.caps-head,.intro-grid,.product-grid,.integration-grid,.contact-grid{grid-template-columns:minmax(0,1fr);gap:28px}
 .section-head,.caps-head{margin-bottom:30px}.section-head>p,.caps-head>p{padding-top:0;font-size:15px}
 .intro-grid .lead{margin-top:18px}.audience{margin-top:34px;padding-top:24px}.audience-grid{gap:24px 22px}.audience-item h3{font-size:15px}.audience-item p{font-size:13px}
 .needs-item{padding:20px 0}.needs-item dt{font-size:16px}.product-copy h2{margin-bottom:18px}.product-copy>p{font-size:16px}
 .feature-rows{margin-top:24px}.feature-row{padding:16px 0}.product-actions{margin-top:20px}
 .ui-stage{padding:0}.ui-stage-head{font-size:12px;margin-bottom:18px}.ui-stage-foot{font-size:11px}
 .card-bar,.scene-tabs{padding-inline:14px}.scene-tabs{gap:4px 13px}.scene-tabs button{font-size:12px}
 .msg-body{padding:6px 14px 18px}.msg-bubble{font-size:13px;padding:14px}.card-foot{padding:12px 14px;font-size:10px}
 #voice .product-copy,#voice .product-media{grid-column:auto;grid-row:auto}
 .hero-media-fixed{background-position:66% center;background-image:linear-gradient(90deg,rgba(9,19,29,.94),rgba(9,19,29,.68)),linear-gradient(0deg,rgba(9,17,25,.6),transparent 50%),url("./assets/business-skyline.webp")}
 .product-media .photo{aspect-ratio:5/4}.player-card{width:100%;margin-top:0;padding:20px}
 .player-top,.player-meta,.player-note{font-size:11px}.player-main{gap:14px}.voice-script{margin-top:26px;font-size:13px}.outcome-strip{grid-template-columns:1fr;gap:20px}
 .selection-row{grid-template-columns:1fr;gap:11px;padding:22px 0}.selection-row dt{font-size:17px}.selection-question{font-size:13px!important}
 .use-case{grid-template-columns:1fr;gap:15px;padding:25px 0}.use-case-title{display:flex;justify-content:space-between;flex-wrap:wrap;align-items:baseline;gap:8px 15px}
 .use-case-title h3{margin:0;font-size:18px}.use-case dl{grid-column:auto}
 .req-row{grid-template-columns:1fr 1fr;margin-top:36px}.req,.req:first-child,.req:last-child{padding:23px 16px;border-bottom:1px solid var(--ink-line-soft)}
 .req:nth-child(odd){padding-left:0;border-right:1px solid var(--ink-line-soft)}.req:nth-child(even){padding-right:0;border-right:0}.req p{font-size:12px}
 .band-copy>p:not(.eyebrow){font-size:15px;margin-top:18px}.protocol-item{grid-template-columns:85px minmax(0,1fr);gap:14px}.integration-intro{margin-top:18px;font-size:16px}
 .code-top,.code-body,.code-foot{padding-inline:18px}.code-tabs{padding-inline:18px}
 .site-footer{padding-top:46px}.foot-top{grid-template-columns:1fr 1fr;gap:34px 24px;padding-bottom:32px}.foot-brand{grid-column:1/-1}
 .foot-brand>p{font-size:15px;margin-top:19px}.foot-col h3{font-size:14px;margin-bottom:9px}.foot-col a{font-size:13px;min-height:32px}
 .foot-bottom{flex-direction:column;gap:7px;padding:20px 0}.legal{gap:22px;justify-content:space-between}
}
@media(max-width:360px){
 :root{--gutter:20px}.hero h1,:lang(en) .hero h1{font-size:28px}.header-tools{gap:8px}
 .audience-grid{grid-template-columns:1fr;gap:20px}.req-row{grid-template-columns:1fr}
 .req,.req:first-child,.req:last-child,.req:nth-child(odd),.req:nth-child(even){padding:22px 0;border-right:0}
}
@media(prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}
 .site-atmosphere{display:none}
 .hero-media-fixed{position:absolute;transform:none;background-attachment:scroll}
}


/* Creative section rhythm: curved seams, overlapping media, independent bilingual audio. */
#main{background:rgba(245,248,251,.96)}
.hero{--hero-curve:148px;min-height:min(88svh,850px);border-radius:0 0 var(--hero-curve) 0}
.hero-media-clip{border-radius:inherit;clip-path:inset(0 round 0 0 var(--hero-curve) 0)}
.hero-inner{padding-bottom:140px}
.hero-rail{position:relative;z-index:4;width:min(1168px,calc(100% - var(--gutter)*2));margin:-66px auto 0;border:0;border-radius:28px 72px 28px 28px;background:rgba(18,31,41,.97);color:white;box-shadow:12px 24px 48px rgba(10,22,32,.12)}
.rail-grid{width:100%;padding-inline:32px}.rail-item,.rail-item:first-child,.rail-item:last-child{padding:28px 24px}.rail-item:first-child{padding-left:0}.rail-item:last-child{padding-right:0}
.overview-section,.selection-section,.scenarios-section,#voice,#developers{background:transparent}
.overview-section{padding-top:100px}.audience{grid-template-columns:120px minmax(0,1fr)}
#sms{position:relative;margin:16px 32px 0;border-radius:0 128px 0 128px;padding-block:112px;isolation:isolate}
#sms::before{content:'SMS';position:absolute;z-index:-1;top:18px;right:8%;font:500 clamp(110px,18vw,260px)/1 var(--sans);letter-spacing:-.06em;color:rgba(225,240,249,.035);pointer-events:none}
#sms .product-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:88px}
#sms .product-media{align-self:start;padding-top:12px;margin-top:-48px}
.demo-card{border-radius:26px 26px 6px 26px;box-shadow:12px 24px 44px rgba(4,14,22,.2)}
.msg-bubble{border-radius:18px 18px 4px 18px}.ui-stage-head{margin-bottom:24px}.ui-stage-foot{padding-inline:8px}
#voice{padding-block:128px 88px}
.voice-media{padding:18px 24px 0;isolation:isolate}
#voice .product-grid{row-gap:0}#voice .voice-intro{grid-column:2;grid-row:1;align-self:end}#voice .voice-details{grid-column:2;grid-row:2;align-self:start}#voice .voice-media{grid-column:1;grid-row:1/span 2;align-self:center}
.voice-photo{position:relative;max-width:420px;margin-inline:auto;border-radius:50%}
.voice-photo::before{content:'';position:absolute;inset:-18px 14px 14px -18px;border:1px solid rgba(42,94,120,.24);border-radius:50%;z-index:-1}
.voice-media .photo{aspect-ratio:1;border-radius:50%;object-position:65% 25%}
.player-card{width:calc(100% + 24px);margin:-76px -12px 0;border-radius:26px 52px 26px 26px;padding:24px 28px;box-shadow:12px 20px 44px rgba(14,34,48,.16)}
.player-top{color:#c9d7e1}.voice-language{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:16px;font-size:12px;color:#c3d3df}
.voice-language-options{display:flex;gap:4px;padding:4px;background:rgba(229,241,250,.07);border-radius:30px}
.voice-language button{min-height:44px;min-width:72px;padding:8px 16px;border-radius:24px;color:#cad9e3;font-size:13px}
.player-card :focus-visible{outline-color:var(--brass-light)}
.voice-language button[aria-pressed="true"]{background:#d5e7f3;color:#163146}
.player-main{margin-top:16px}.play-btn{width:52px;height:52px}.player-note{margin-top:12px}
.voice-script{margin-top:40px}.outcome-strip{margin-top:32px}
.selection-section{padding-block:80px 100px}
.selection-matrix{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 96px;border:0}
.selection-row{display:block;padding:28px 0 32px;border-bottom:1px solid var(--line-strong)}
.selection-row:nth-child(even){margin-top:56px}.selection-row dt{font-size:22px;font-weight:400}.selection-row dd{display:grid;grid-template-columns:1fr;gap:12px;margin-top:20px}.selection-row p{font-size:15px}
.scenarios-section{padding-top:48px;padding-bottom:112px}
.use-cases{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:32px 56px;align-items:start;border:0;padding-bottom:24px}
.use-case{display:block;padding:40px 44px;background:rgba(255,255,255,.76);border:0;border-radius:52px 52px 8px 52px}
.use-case:nth-child(2){margin-top:80px;border-radius:52px 8px 52px 52px;background:rgba(222,233,241,.66)}
.use-case:nth-child(3){margin-top:-48px;border-radius:8px 52px 52px 52px;background:rgba(222,233,241,.66)}
.use-case:nth-child(4){margin-top:32px;border-radius:52px 52px 52px 8px}
.use-case-title h3{font-size:24px;font-weight:400}.use-case-need{font-size:16px;margin-top:20px}.use-case dl{margin-top:26px;gap:16px}
.band{margin-inline:32px;border-radius:128px 24px 128px 24px;isolation:isolate}
.band-copy{max-width:680px}.req-row{margin-top:60px}
.code-panel{border-radius:32px 32px 64px 8px}.code-top{padding-top:24px}

.site-footer{border-radius:0 110px 0 0}
@media(max-width:1024px){
 .hero{--hero-curve:128px}.hero-rail{width:calc(100% - 64px)}.rail-grid{padding-inline:24px}.rail-item,.rail-item:first-child,.rail-item:last-child{padding-block:24px;padding-inline:16px}
 #sms{margin-inline:20px;border-radius:0 88px 0 88px;padding-block:88px}#sms .product-grid{gap:40px}
 .voice-media{padding-inline:12px}.player-card{padding:22px}.selection-matrix{gap:0 48px}.use-cases{gap:28px 32px}.use-case{padding:32px}
 .band{margin-inline:20px;border-radius:88px 20px 88px 20px}.contact-section{border-top-left-radius:96px}
}
@media(max-width:760px){
 .hero{--hero-curve:96px;min-height:660px}.hero-inner{padding-bottom:116px}
 .hero-rail{width:calc(100% - 40px);margin-top:-48px;border-radius:24px 56px 24px 24px}.rail-grid{padding:4px 22px}.rail-item,.rail-item:first-child,.rail-item:last-child{padding:20px 0}
 .overview-section{padding-top:68px}.audience{grid-template-columns:1fr}
 #sms{margin:0 12px;border-radius:0 64px 0 64px;padding-block:76px}#sms .product-grid{grid-template-columns:minmax(0,1fr);gap:36px}#sms .product-media{padding-top:0;margin-top:0}
 .demo-card{border-radius:22px 22px 4px 22px}.ui-stage-foot{padding-inline:0}
 #voice{padding-block:64px}#voice .voice-intro,#voice .voice-details,#voice .voice-media{grid-column:auto;grid-row:auto}#voice .voice-details .feature-rows{margin-top:32px}.voice-media{padding:18px 12px 0;margin-top:32px}.voice-photo{max-width:220px}.voice-photo::before{inset:-12px 10px 10px -12px}
 .voice-media .photo{aspect-ratio:1;border-radius:50%}.player-card{width:calc(100% + 16px);margin:-44px -8px 0;padding:20px;border-radius:22px 40px 22px 22px}
 .voice-language{gap:8px;font-size:12px}.voice-language button{min-width:66px;min-height:44px;padding:7px 12px}.player-top{font-size:12px}.play-btn{width:48px;height:48px}
 .selection-section{padding-block:48px 64px}.selection-matrix{grid-template-columns:1fr;gap:0}.selection-row,.selection-row:nth-child(even){margin-top:0;padding:24px 0}.selection-row dt{font-size:20px}.selection-row dd{gap:10px;margin-top:14px}
 .scenarios-section{padding-top:24px;padding-bottom:64px}.use-cases{grid-template-columns:1fr;gap:24px;padding:0}.use-case,.use-case:nth-child(2),.use-case:nth-child(3),.use-case:nth-child(4){margin-top:0;padding:30px;border-radius:36px 36px 6px 36px}.use-case:nth-child(even){margin-left:16px;border-radius:36px 6px 36px 36px}.use-case:nth-child(odd){margin-right:16px}
 .use-case-title h3{font-size:22px}.use-case-need{margin-top:16px;font-size:15px}.use-case dl{margin-top:20px;gap:14px}
 .band{margin-inline:12px;border-radius:64px 16px 64px 16px;padding-top:76px}.band .wrap{width:calc(100% - 48px)}.req-row{margin-top:36px}
 .code-panel{border-radius:24px 24px 48px 6px}.contact-section{border-top-left-radius:64px}.contact-grid{gap:36px}.contact-copy .section-title{font-size:32px}.contact-copy .lead{margin-top:20px}.contact-topics{margin-top:26px}.contact-topics li{gap:14px}.wecom-panel{justify-self:center;max-width:420px;padding:26px 24px 22px;border-radius:28px 28px 48px 8px}.wecom-bottom{font-size:11px}
 .site-footer{border-top-right-radius:64px}
}
@media(max-width:360px){.hero-rail{width:calc(100% - 32px)}.rail-grid{padding-inline:20px}.voice-media{padding-inline:4px}.player-card{padding:18px}.voice-language button{min-width:60px;padding-inline:10px}.use-case,.use-case:nth-child(2),.use-case:nth-child(3),.use-case:nth-child(4){padding:26px}.band .wrap{width:calc(100% - 40px)}}