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clamp(.9375rem, 1.2vw, 1rem);--button-height: clamp(40px, 4.2vw, 44px);--button-padding-x: clamp(16px, 2vw, 22px);--button-font: clamp(.9375rem, 1.2vw, 1rem);--hero-button-width: clamp(180px, 28vw, 240px);--hero-button-height: clamp(56px, 7vw, 74px);--hero-button-font: clamp(1.05rem, 2.2vw, 1.625rem);--card-radius: clamp(16px, 2vw, 20px);--card-pad: clamp(20px, 2.6vw, 32px);--panel-pad: clamp(24px, 4vw, 48px);--panel-gap: clamp(24px, 4vw, 56px);--hero-gap: clamp(32px, 5vw, 56px);--device-primary-width: clamp(200px, 24vw, 265px);--device-secondary-width: clamp(165px, 20vw, 230px);--device-primary-offset: clamp(20px, 5vw, 78px);--device-primary-top: clamp(24px, 4vw, 48px);--mockup-height: clamp(290px, 36vw, 425px);--coverage-height: clamp(380px, 42vw, 492px);--download-card-min: clamp(210px, 24vw, 254px)}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}.page-shell{padding-top:80px}body{margin:0;min-width:320px;font-family:PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;color:var(--color-text);background:#fff}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}svg,img{display:block}.section-block{width:min(var(--container-width),calc(100% - var(--page-gutter) * 2));margin:0 auto}.hero{position:relative;overflow-x:clip;padding:clamp(20px,4vw,32px) 0 clamp(72px,12vw,108px)}.hero__glow{position:absolute;border-radius:999px;pointer-events:none;filter:blur(10px)}.hero__glow--large{top:207px;left:calc(50% + 65px);width:clamp(260px,32vw,407px);aspect-ratio:1;background:radial-gradient(circle,#0346e633 0,#8c68f814 58%,#fff0 76%)}.hero__glow--small{top:572px;left:calc(50% + 402px);width:clamp(120px,16vw,198px);aspect-ratio:1;background:radial-gradient(circle,#0346e629 0,#8c68f80a 70%,#fff0 82%)}.topbar-wrap{position:fixed;top:0;left:0;right:0;z-index:100;height:80px;background:#fff}.topbar{width:min(var(--container-width),calc(100% - var(--page-gutter) * 2));height:80px;margin:0 auto;padding:0;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:24px;background:transparent}.brand{display:inline-flex;align-items:center;gap:12px;min-width:100px}.brand__mark{display:inline-flex;width:40px;height:40px}.brand__label{color:var(--color-brand);font-size:16px;font-weight:600;line-height:16px;white-space:nowrap}.topbar__nav{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:40px;font-size:16px;line-height:16px}.topbar__nav a{display:inline-flex;align-items:center;justify-content:center;color:var(--color-text);font-weight:400;transition:color .2s ease}.topbar__nav a:hover,.topbar__nav a:focus-visible{color:var(--color-brand);outline:none}.topbar__actions{display:flex;align-items:center;gap:12px;justify-self:end;flex-shrink:0}.ghost-button,.solid-button,.language-switch{display:inline-flex;align-items:center;justify-content:center;min-height:var(--button-height);border-radius:999px;white-space:nowrap;font-size:var(--button-font);line-height:1}.ghost-button{min-width:clamp(72px,8vw,82px);padding:0 var(--button-padding-x);border:1px solid var(--color-brand);color:var(--color-brand);background:transparent}.solid-button{padding:0 var(--button-padding-x);border:1px solid transparent;background:var(--color-brand);color:#fff}.solid-button--small{min-width:clamp(72px,8vw,82px)}.solid-button--hero{min-width:var(--hero-button-width);min-height:var(--hero-button-height);padding:0 clamp(24px,4vw,40px);font-size:var(--hero-button-font);line-height:1.1}.hero__actions{display:flex;flex-wrap:wrap;gap:clamp(12px,2vw,20px);align-items:center}.ghost-button--hero{min-width:var(--hero-button-width);min-height:var(--hero-button-height);padding:0 clamp(24px,4vw,40px);font-size:var(--hero-button-font);line-height:1.1;background:#fff}.language-switch{width:120px;min-width:120px;min-height:40px;height:40px;padding:0 7px;border:1px solid var(--color-brand);background:#fff;color:var(--color-brand);font-size:16px;gap:4px;cursor:pointer;transition:background-color .2s ease,border-color .2s ease,color .2s ease}.language-switch:hover,.language-switch:focus-visible{background:var(--color-brand-ghost);outline:none}.language-switch .icon-svg{width:22px;height:22px;flex:none;color:var(--color-brand)}.language-switch .icon-svg:last-child{width:12px;height:12px}.hero__content{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);align-items:center;gap:var(--hero-gap);padding-top:clamp(72px,12vw,154px)}.hero__copy{max-width:600px}.hero__title{margin:0;font-size:var(--title-hero);font-weight:600;line-height:1.05;color:#000}.hero__title+.hero__title{margin-top:clamp(14px,3vw,32px)}.hero__description{margin:clamp(28px,5vw,56px) 0 clamp(36px,5vw,60px);font-size:var(--text-lead);line-height:1.65;color:var(--color-muted);max-width:34rem}.hero__visual{position:relative;width:min(100%,534px);aspect-ratio:534 / 563;margin-left:auto}.hero__visual-card{position:relative;width:100%;margin-left:auto;height:100%}.hero__visual-image{width:100%;height:100%;object-fit:contain}.device{position:absolute;display:flex;align-items:center;justify-content:center;border-radius:clamp(30px,3vw,44px);background:linear-gradient(180deg,#0346e60f 0,#0346e62e);box-shadow:var(--shadow-soft)}.device--primary{top:var(--device-primary-top);right:var(--device-primary-offset);width:var(--device-primary-width);aspect-ratio:265 / 401;padding:clamp(10px,1.5vw,14px)}.device--secondary{top:0;right:0;width:var(--device-secondary-width);aspect-ratio:230 / 479;padding:clamp(8px,1.2vw,12px)}.device__screen{position:relative;width:100%;height:100%;overflow:hidden;border-radius:clamp(24px,3vw,34px);border:1px solid rgba(3,70,230,.08);background:linear-gradient(180deg,#f9fbff 0,#edf4ff);padding:clamp(14px,2vw,20px) clamp(12px,1.8vw,18px)}.device__screen--slim{border-radius:clamp(20px,2.5vw,28px);padding:clamp(12px,1.6vw,16px)}.device__status{width:68px;height:8px;margin:0 auto 24px;border-radius:999px;background:#0346e62e}.device__rail{display:flex;flex-direction:column;gap:16px;width:8px}.device__rail span{display:block;width:8px;border-radius:999px;background:#0346e62e}.device__rail span:nth-child(1){height:22px}.device__rail span:nth-child(2){height:36px}.device__rail span:nth-child(3){height:28px}.device__card{position:absolute;top:112px;left:26px;right:26px;height:120px;border-radius:24px;background:#0346e617}.device__card--accent{background:linear-gradient(135deg,#0346e61f,#8c68f82e)}.device__chip{position:absolute;right:26px;bottom:78px;width:92px;height:18px;border-radius:999px;background:#0346e61f}.device__chip--small{right:26px;bottom:48px;width:62px}.device__header{display:flex;align-items:center;gap:12px;margin-bottom:24px}.device__avatar{width:40px;height:40px;border-radius:999px;background:linear-gradient(135deg,#0346e647,#8c68f84d)}.device__header-copy{display:flex;flex:1;flex-direction:column;gap:8px}.device__header-copy span{display:block;height:10px;border-radius:999px;background:#0346e61f}.device__header-copy span:first-child{width:96px}.device__header-copy span:last-child{width:140px}.chat-bubble{height:56px;margin-bottom:16px;border-radius:22px;background:#0346e61f}.chat-bubble--left{width:78%}.chat-bubble--right{width:64%;margin-left:auto;background:linear-gradient(135deg,#0346e638,#8c68f833)}.chat-bubble--wide{width:88%}.device__composer{position:absolute;left:18px;right:18px;bottom:18px;display:flex;align-items:center;gap:10px;min-height:54px;padding:14px 16px;border-radius:20px;background:#fff;box-shadow:0 10px 24px #0346e614}.device__composer span{display:block;border-radius:999px;background:#0346e61f}.device__composer span:first-child{flex:1;height:12px}.device__composer span:nth-child(2),.device__composer span:nth-child(3){width:12px;height:12px}.section-heading{display:flex;flex-direction:column}.section-heading--center{align-items:center;text-align:center}.section-heading h2{margin:0;font-size:var(--title-section);line-height:1.1;font-weight:600}.section-heading p{margin:clamp(16px,2vw,24px) 0 0;font-size:var(--text-lead);line-height:1.55;color:var(--color-muted);max-width:44rem}.section-heading--light h2,.section-heading--light p{color:#fff}.features{--feature-active-scale: 1.24;padding:var(--section-space-xl) 0 var(--section-space-md);overflow:visible}.features__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));align-items:center;gap:clamp(18px,2.4vw,43px);margin-top:clamp(48px,8vw,124px);padding:clamp(20px,3vw,36px) clamp(8px,1vw,16px)}.feature-card{-webkit-appearance:none;-moz-appearance:none;appearance:none;position:relative;z-index:0;display:flex;flex-direction:column;justify-content:flex-start;gap:24px;width:100%;min-height:248px;padding:32px;border:1px solid var(--color-brand-border);border-radius:20px;background:#fff;color:#333;text-align:left;cursor:pointer;transform:scale(1);transform-origin:center center;-webkit-tap-highlight-color:transparent;transition:transform .28s cubic-bezier(.22,1,.36,1),box-shadow .28s ease,border-color .28s 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p{color:#fff}.capabilities{padding-bottom:var(--section-space-md)}.capabilities__panel{background:#fff;overflow:hidden}.capability-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:center;gap:0;padding:clamp(56px,7vw,88px) 0 0}.capability-row:first-child{padding-top:clamp(56px,7vw,88px)}.capability-row:last-child{padding-bottom:clamp(56px,7vw,88px)}.capability-row--reverse{grid-template-columns:repeat(2,minmax(0,1fr))}.capability-row--reverse .capability-copy{order:2}.capability-row--reverse .mockup{order:1}.capability-copy h3{margin:0;font-size:var(--title-card);line-height:1.15;font-weight:500}.capability-copy__lead{margin:clamp(18px,2vw,24px) 0 clamp(22px,3vw,28px);font-size:var(--text-body);line-height:1.65}.capability-copy__list{display:flex;flex-direction:column;gap:clamp(16px,3vw,24px);margin:0;padding:0;list-style:none}.capability-copy__list 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26px;border-radius:999px;background:#0346e624}.mockup__chat-row{height:42px;margin-bottom:14px;border-radius:18px;background:#0346e61f}.mockup__chat-row--left{width:72%}.mockup__chat-row--right{width:62%;margin-left:auto;background:linear-gradient(135deg,#0346e638,#8c68f82e)}.mockup__chat-row--short{width:48%}.mockup__gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(10px,1.8vw,12px);margin-top:18px}.mockup__gallery span{display:block;aspect-ratio:1;border-radius:18px;background:linear-gradient(135deg,#0346e61a,#8c68f829)}.mockup__toolbar{position:absolute;left:20px;right:20px;bottom:20px;display:flex;align-items:center;gap:10px;min-height:52px;padding:14px 16px;border-radius:18px;background:#fff}.mockup__toolbar span{display:block;border-radius:999px;background:#0346e61f}.mockup__toolbar span:first-child{flex:1;height:12px}.mockup__toolbar span:nth-child(2),.mockup__toolbar 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32px)}.mockup__column{display:flex;flex-direction:column;gap:12px;padding:clamp(12px,2vw,14px);border-radius:18px;background:#0346e60f}.mockup__task{height:92px;border-radius:14px;background:#ffffffe6}.mockup__task--strong{background:linear-gradient(180deg,#0346e61f,#0346e608)}.mockup__task--accent{background:linear-gradient(180deg,#8c68f833,#ffffffe6)}.mockup__security{display:flex;flex-direction:column;justify-content:center;gap:clamp(20px,3vw,28px);padding:clamp(20px,3vw,28px)}.mockup__security-card{padding:clamp(20px,3vw,26px);border-radius:24px;background:linear-gradient(135deg,#0346e61a,#8c68f829)}.mockup__security-icon{display:inline-flex;align-items:center;justify-content:center;width:clamp(50px,5vw,56px);height:clamp(50px,5vw,56px);border-radius:18px;color:var(--color-brand);background:#ffffffdb}.mockup__security-icon .icon-svg{width:24px;height:24px}.mockup__security-bars{display:flex;flex-direction:column;gap:10px;margin-top:22px}.mockup__security-bars 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0}.coverage__image{width:100%;height:auto;border-radius:clamp(24px,4vw,36px);box-shadow:var(--shadow-card)}.coverage__shape{position:absolute;border-radius:999px;background:#0346e614;filter:blur(.2px)}.coverage__shape--one{top:36%;left:10%;width:19%;height:22%}.coverage__shape--two{top:23%;left:28%;width:18%;height:16%}.coverage__shape--three{top:28%;left:46%;width:26%;height:22%}.coverage__shape--four{top:52%;left:63%;width:20%;height:18%}.coverage__shape--five{top:58%;left:34%;width:18%;height:14%}.coverage-stat{position:absolute;min-width:120px}.coverage-stat strong{display:block;margin-top:6px;font-size:var(--text-body);line-height:1.2;color:var(--color-text)}.coverage-stat p{margin:10px 0 0;font-size:var(--text-small);line-height:1.4;color:var(--color-muted)}.coverage-stat__dot{display:block;width:14px;height:14px;border-radius:999px;background:var(--color-brand);box-shadow:0 0 0 8px #0346e614}.coverage-stat__line{position:absolute;top:7px;left:7px;width:2px;background:linear-gradient(180deg,#0346e699,#0346e600);transform-origin:top left}.coverage-stat--global{bottom:15%;left:6%}.coverage-stat--global .coverage-stat__line{height:116px;transform:rotate(-37deg)}.coverage-stat--core{right:31%;bottom:3%}.coverage-stat--core .coverage-stat__line{height:154px;transform:rotate(-12deg)}.coverage-stat--strategic{top:5%;right:29%}.coverage-stat--strategic .coverage-stat__line{height:86px;transform:rotate(42deg)}.coverage-stat--service{top:33%;right:6%}.coverage-stat--service .coverage-stat__line{height:108px;transform:rotate(18deg)}.downloads{padding-bottom:var(--section-space-lg)}.downloads__panel{display:grid;grid-template-columns:minmax(280px,400px) minmax(0,758px);align-items:start;justify-content:space-between;gap:clamp(28px,4vw,42px);padding:clamp(72px,9vw,108px) 0 clamp(72px,8vw,104px);background:#fff}.downloads__intro 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