@charset "UTF-8";
:root{--ink:#1b2733;--muted:#4c6b8c;--blue:#087cf0;--green:#0876df;--paper:#f5faff;--line:#d5e5f5;--radius:24px;--wrap:1200px;--font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img,svg{max-width:100%}img{display:block}button,a,input,summary{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #087cf0;outline-offset:5px}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.3;letter-spacing:-.045em}h1{font-size:clamp(36px,5vw,64px);font-weight:750}h2{font-size:clamp(28px,3vw,40px)}h3{font-size:22px}p{margin-bottom:1.25em}.wrap{width:min(var(--wrap),calc(100% - 72px));margin-inline:auto}.muted{color:var(--muted)}.small{font-size:13px;color:var(--muted)}.eyebrow{font-size:12px;letter-spacing:.12em;font-weight:700;color:var(--green);display:block;margin-bottom:20px}.skip{position:fixed;left:16px;top:-100px;background:white;padding:12px;z-index:100}.skip:focus{top:12px}
.site-header{position:sticky;top:0;z-index:30;background:#f5fafff5;border-bottom:1px solid #d5e5f580;backdrop-filter:blur(14px)}.header-inner{height:88px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}.brand img{width:40px;height:40px}.brand-title{font-size:25px;font-weight:750;line-height:1.1;letter-spacing:.05em}.brand-en{display:block;font-size:9px;letter-spacing:.22em;color:var(--muted);margin-top:4px}.nav{margin-left:auto;display:flex;gap:27px;align-items:center}.nav a{font-size:14px;color:#536169;position:relative;padding:12px 0}.nav a[aria-current=page]{color:var(--ink);font-weight:700}.nav a[aria-current=page]:after{content:"";position:absolute;width:16px;height:3px;background:var(--green);border-radius:10px;bottom:3px;left:calc(50% - 8px)}.header-contact{font-size:13px;border:1px solid #c5d2e0;padding:9px 16px;border-radius:7px;white-space:nowrap}.menu-toggle{display:none;border:1px solid var(--line);background:white;border-radius:8px;width:44px;height:44px;color:var(--ink)}
.hero{padding:68px 0 50px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:50px}.hero h1{margin-bottom:26px;line-height:1.32}.hero h1 em{font-style:normal;color:var(--green)}.hero-copy>p{max-width:460px;font-size:17px;color:var(--muted);line-height:1.95}.hero-intro{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--green);margin-bottom:24px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#4d749c}.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;justify-content:center;align-items:center;gap:15px;min-height:48px;padding:12px 23px;border-radius:9px;font-weight:600;font-size:14px;border:1px solid transparent;transition:transform .15s,background .15s}.button:hover{transform:translateY(-2px)}.primary{background:var(--blue);color:white;box-shadow:0 5px 13px #087cf01a}.primary:hover{background:#0069d9}.secondary{background:white;border-color:var(--line);color:var(--ink)}.outline{border-color:#b3c4d6;color:var(--green);background:transparent}.text-link{font-size:14px;color:var(--green);display:inline-block;padding:8px 0;border-bottom:1px solid #8ca6c1}.hero-notes{display:flex;flex-wrap:wrap;gap:20px;margin-top:24px;color:var(--muted);font-size:12px}.hero-notes span:before{content:"✓";margin-right:6px;color:var(--green)}
.visual-stage{position:relative;min-height:550px;border-radius:28px;background:#dcefff}.landscape{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:28px}.stage-label{position:absolute;top:22px;left:24px;color:#283a4d;font-size:10px;letter-spacing:.12em;display:flex;gap:10px;align-items:center}.stage-label:before{content:"";width:17px;height:1px;background:#486686}.phone{position:absolute;width:209px;height:409px;left:15%;top:77px;transform:rotate(-7deg);background:#f4f8fc;border:6px solid #243342;border-radius:33px;box-shadow:18px 25px 40px #172b3f30;padding:15px 12px;overflow:hidden}.phone-top{height:25px;text-align:center;font-size:9px;font-weight:700}.phone-top:before{content:"";display:block;position:absolute;left:calc(50% - 20px);top:6px;width:40px;height:8px;border-radius:20px;background:#243342}.phone-heading{display:flex;justify-content:space-between;font-size:12px;font-weight:700;margin-bottom:20px}.phone-bubble{background:#fff;border-radius:10px;padding:11px;font-size:10px;line-height:1.9;margin-bottom:13px;box-shadow:0 2px 6px #1f2d3a06}.phone-bubble.mine{background:#d7e6f6;margin-left:20px}.phone-scene{border-radius:12px;height:110px;background:#d2e3f5 url('/assets/landscape.5176eda399c4.svg') center 55%/cover;display:flex;align-items:flex-end;padding:8px;color:white;font-size:11px}.phone-bar{position:absolute;bottom:16px;left:12px;right:12px;border-top:1px solid #d3e4f5;display:flex;gap:9px;align-items:center;padding-top:13px;color:#44607e;font-size:10px}.phone-input{height:26px;flex:1;background:#dbe8f6;border-radius:6px}.floating-note{position:absolute;right:-16px;top:108px;background:#ffffffed;border:1px solid #fff9;box-shadow:0 10px 30px #1d304414;border-radius:14px;padding:14px 17px;width:205px;font-size:12px;backdrop-filter:blur(12px)}.floating-note b{display:block;font-size:13px;margin-bottom:2px}.floating-note p{font-size:10px;margin:0;color:var(--muted)}.note-icon{width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;background:#dfebf8;color:var(--green);float:left;margin:3px 10px 8px 0}.concept-box{position:absolute;bottom:45px;right:33px;width:145px;height:188px;border-radius:39px 39px 45px 45px;transform:rotate(11deg);background:linear-gradient(130deg,#ccdff3,#94acc5);border:2px solid #dae8f6;box-shadow:11px 16px 26px #10223540;display:flex;align-items:center;justify-content:center;flex-direction:column;color:#3d5670}.concept-box:before{content:"";position:absolute;width:5px;height:56px;top:-50px;border-radius:50%;border:3px solid #7695b5;transform:rotate(-14deg)}.concept-mark{font-size:33px;font-family:serif;letter-spacing:.08em}.speaker{width:60px;height:19px;margin-top:20px;background:radial-gradient(circle,#597ea5 1px,transparent 1.8px) 0 0/7px 6px}.visual-caption{position:absolute;bottom:13px;left:20px;color:#dae8f6;font-size:10px;max-width:200px}.content-band{margin-top:36px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:21px 0;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:13px;color:#466382}.content-band strong{font-size:14px;color:var(--ink)}
.section{padding:85px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:25px;margin-bottom:38px}.section-head h2{margin-bottom:0}.section-head p{margin:0;max-width:400px;color:var(--muted);font-size:14px}.section-head .eyebrow{margin-bottom:14px}.white-section{background:white}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}.card{padding:29px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.card h3{font-size:20px;margin:18px 0 13px}.card p{font-size:14px;color:var(--muted);margin-bottom:0}.number{font-size:12px;color:var(--green);letter-spacing:.12em}.icon-box{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:#e4eef9;color:var(--green);font-size:24px}.feature-wide{background:#ddeaf7;border:none;display:grid;grid-template-columns:1.1fr 1fr;gap:35px;padding:50px;align-items:center}.feature-wide h2{font-size:36px}.feature-wide p{font-size:15px;color:#466483}.feature-wide .actions{margin-top:24px}.knowledge-demo{background:#f1f6fc;border:1px solid #ffffffa0;box-shadow:0 13px 45px #212f3d10;border-radius:16px;padding:25px;transform:rotate(2deg)}.demo-label{font-size:11px;letter-spacing:.08em;color:#567a9f;margin-bottom:17px}.knowledge-row{border-top:1px solid #cde0f3;display:flex;gap:12px;padding:16px 0;font-size:13px;align-items:center}.knowledge-row span:last-child{margin-left:auto;font-size:10px;background:#d9e7f6;color:#425d7a;padding:3px 8px;border-radius:20px}.knowledge-row span:first-child{color:var(--green)}.tabs{display:flex;gap:6px;padding:5px;border:1px solid var(--line);border-radius:12px;width:max-content;margin:0 auto 38px;background:white}.tabs button{border:0;background:transparent;color:var(--muted);padding:10px 28px;border-radius:8px;font-size:14px}.tabs button[aria-selected=true]{color:white;background:var(--green)}.step-line{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}.step{position:relative;padding-top:25px;border-top:1px solid #c1cfdd}.step:before{content:"";width:9px;height:9px;background:var(--green);position:absolute;border-radius:50%;top:-5px;left:0}.step h3{font-size:20px;margin-top:12px}.step p{font-size:14px;color:var(--muted)}.step small{font-size:11px;color:var(--green);letter-spacing:.1em}.center{text-align:center}.section-intro{max-width:620px;margin:0 auto 36px;color:var(--muted)}.notice{padding:20px 24px;background:#e4eef9;border-radius:12px;border:1px solid #cfe1f4;color:#435f7d;font-size:13px;line-height:1.8}.notice p:last-child{margin-bottom:0}.cta{display:flex;justify-content:space-between;align-items:center;gap:25px;border-radius:24px;background:#0876df;padding:43px 48px;color:white}.cta h2{font-size:31px;margin-bottom:8px}.cta p{margin:0;color:#c1cfdd;font-size:14px}.cta .secondary{color:#21364b;border:0;white-space:nowrap}
.page-heading{padding:64px 0 36px}.page-heading h1{font-size:clamp(33px,4vw,52px);margin-bottom:20px}.page-heading p{color:var(--muted);max-width:700px;font-size:16px}.page-heading .eyebrow{margin-bottom:16px}.page-content{padding-bottom:75px}.split{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:start}.sheet{background:white;border:1px solid var(--line);border-radius:24px;padding:36px}.sheet h2{font-size:26px;letter-spacing:-.025em}.sheet h3{font-size:18px;letter-spacing:0;margin-top:30px}.sheet p,.sheet li{font-size:14px;color:var(--muted)}.sheet ul,.sheet ol{padding-left:20px}.sheet li{margin:9px 0}.spaced{margin-top:28px}.pill{display:inline-block;font-size:11px;color:var(--green);background:#dfebf7;border:1px solid #c9ddf2;border-radius:30px;padding:4px 10px}.pill.testing{color:#2b5988;background:#deeaf7;border-color:#c5d7e9}.platform-mark{width:56px;height:56px;background:#dfebf8;color:#405f80;border-radius:16px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;margin-bottom:24px}.release-title{display:flex;justify-content:space-between;align-items:center;gap:15px}.release-title h2{margin:0}.version{font-family:ui-monospace,Consolas,monospace;font-size:14px;overflow-wrap:anywhere}.metadata{display:flex;gap:17px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:18px 0}.download-qr{display:grid;grid-template-columns:140px 1fr;gap:25px;align-items:center;background:#eef4fb;border-radius:15px;padding:23px;margin-top:28px}.download-qr img{width:140px;height:140px;background:white;border-radius:6px}.download-qr h3{font-size:16px;margin:0 0 8px}.download-qr p{font-size:12px;margin-bottom:10px}.copy-button{background:none;border:0;color:var(--blue);font-size:12px;padding:6px 0;text-align:left}.copy-field{max-width:100%;font-size:11px;display:block;border:1px solid var(--line);padding:8px}.status-line{font-size:12px;color:var(--green);min-height:22px;margin:10px 0 0}.hash{font-size:11px;overflow-wrap:anywhere;white-space:normal;color:#54789d}.unavailable{background:#edf4fb;padding:14px 16px;border-radius:10px;color:var(--muted);font-size:13px}.platform-list{display:flex;justify-content:space-between;gap:16px;align-items:center;border-top:1px solid var(--line);padding:22px 0}.platform-list h3{font-size:16px;margin:0 0 4px}.platform-list p{font-size:12px;margin:0}.contact-panel{background:#dfebf7;border-color:#cbdff3}.contact-panel .contact-value{display:block;font-size:clamp(22px,3vw,32px);font-weight:700;color:var(--green);margin-bottom:14px;overflow-wrap:anywhere;letter-spacing:-.025em}.contact-panel .mail{font-size:clamp(17px,2vw,23px)}.contact-panel .small{margin-top:15px}.check-list{list-style:none;padding:0!important}.check-list li{padding-left:26px;position:relative}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--green)}
.help-bar{display:flex;gap:20px;align-items:center;justify-content:space-between;margin-bottom:28px}.search{background:white;border:1px solid #c4d1df;border-radius:9px;padding:13px 17px;width:min(100%,340px);font-size:14px;color:var(--ink)}.filters{display:flex;flex-wrap:wrap;gap:7px}.filters button{padding:8px 17px;border:1px solid var(--line);background:white;color:var(--muted);border-radius:30px;font-size:13px}.filters button[aria-pressed=true]{background:var(--green);color:white;border-color:var(--green)}.faq{background:white;border:1px solid var(--line);border-radius:15px;margin-bottom:12px;padding:0 25px}.faq summary{padding:21px 35px 21px 0;cursor:pointer;list-style:none;font-size:16px;font-weight:600;position:relative}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";position:absolute;right:0;font-size:21px;line-height:1.2;color:var(--green)}.faq[open] summary:after{content:"−"}.faq .answer{padding:0 28px 22px 0;color:var(--muted);font-size:14px;max-width:850px}.faq .answer p:last-child{margin-bottom:0}.empty{padding:40px;background:white;border:1px dashed var(--line);border-radius:15px}.prose{max-width:850px}.prose h2{font-size:23px;margin:32px 0 14px}.prose p,.prose li{font-size:15px}.policy-nav{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:25px;font-size:13px;color:var(--green)}
.site-footer{padding:50px 0 24px;background:#e1ecf8;border-top:1px solid #cee1f4}.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:35px}.footer-main .brand{margin-bottom:19px}.footer-main p{font-size:12px;color:var(--muted);max-width:350px}.footer-main h3{font-size:13px;margin:2px 0 15px;letter-spacing:0}.footer-links{display:flex;flex-wrap:wrap;gap:11px 20px;font-size:12px;color:#4b6b8c}.footer-links a:hover,.footer-contact a:hover{text-decoration:underline}.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13px;color:#456280}.footer-bottom{border-top:1px solid #c7dcf2;padding-top:21px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:15px;font-size:11px;color:#587da4}.footer-bottom a{margin-left:15px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1450px){.hero{padding-top:78px}.visual-stage{min-height:580px}.phone{left:19%;top:93px}}
@media(max-width:1080px){.nav{gap:18px}.header-contact{display:none}.hero-grid{gap:26px}.visual-stage{min-height:515px}.phone{left:8%;top:70px}.floating-note{right:-8px;width:185px}.concept-box{right:20px;bottom:40px;width:130px;height:165px}.feature-wide{padding:34px}.hero h1{font-size:50px}}
@media(max-width:780px){.wrap{width:calc(100% - 40px)}.header-inner{height:72px;gap:15px}.brand img{width:35px;height:35px}.brand-title{font-size:23px}.menu-toggle{display:block;margin-left:auto}.nav{display:none;position:absolute;top:72px;left:0;right:0;background:#f5faff;border-bottom:1px solid var(--line);padding:17px 24px 24px;box-shadow:0 12px 20px #1b27330a;gap:0;flex-direction:column;align-items:stretch}.nav.is-open{display:flex}.nav a{padding:12px}.nav a[aria-current=page]:after{left:0;top:calc(50% - 2px);width:4px;height:4px}.hero{padding-top:36px}.hero-grid{grid-template-columns:1fr;gap:35px}.hero h1{font-size:46px;line-height:1.35}.hero-copy>p{font-size:15px;max-width:100%}.hero .eyebrow{margin-bottom:16px}.hero-intro{margin-bottom:20px}.actions{margin-top:24px}.visual-stage{min-height:465px;max-width:540px;width:100%;margin:auto}.phone{top:60px;left:18%;width:190px;height:373px}.phone-scene{height:95px}.phone-bubble{font-size:9px;padding:9px}.floating-note{right:7px;top:105px;width:177px;padding:12px}.concept-box{right:36px;bottom:40px;width:120px;height:155px;border-radius:32px}.concept-mark{font-size:28px}.content-band{flex-wrap:wrap;justify-content:flex-start;gap:12px 25px;margin-top:28px}.content-band strong{width:100%}.section{padding:55px 0}.section-head{display:block;margin-bottom:28px}.section-head p{margin-top:20px}.grid-3,.grid-2,.split{grid-template-columns:1fr}.card{padding:25px}.feature-wide{grid-template-columns:1fr;padding:29px;gap:24px}.feature-wide h2{font-size:30px}.knowledge-demo{max-width:400px;width:100%;transform:none}.step-line{grid-template-columns:1fr;gap:20px}.step{padding-top:20px}.step h3{margin-bottom:10px}.step p{margin-bottom:4px}.tabs button{padding:9px 22px}.cta{padding:30px;display:block}.cta h2{font-size:26px}.cta .button{margin-top:24px}.page-heading{padding-top:38px}.page-heading h1{font-size:36px}.sheet{padding:25px}.help-bar{align-items:stretch;flex-direction:column;gap:15px}.search{width:100%;max-width:none}.footer-main{grid-template-columns:1fr 1fr;gap:26px}.footer-main>div:first-child{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom>span{display:block;margin-top:12px}.footer-bottom a{margin-left:0;margin-right:15px}.page-content{padding-bottom:45px}.section-head .text-link{margin-top:16px}}
@media(max-width:390px){.wrap{width:calc(100% - 32px)}.hero h1{font-size:39px}.phone{left:10%;width:178px;height:362px}.floating-note{right:0;width:155px;top:100px;font-size:11px}.floating-note p{font-size:9px}.concept-box{right:20px}.download-qr{grid-template-columns:1fr;gap:15px}.download-qr img{width:130px;height:130px}.button{padding:12px 18px}.tabs button{padding:9px 17px}}
.concept-showcase{background:linear-gradient(145deg,#fff,#eaf5ff)}.concept-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:70px}.concept-copy h2{font-size:clamp(30px,3.4vw,44px);line-height:1.4;margin-bottom:24px}.concept-copy>p{color:var(--muted);max-width:440px}.concept-benefits{margin:30px 0}.concept-benefits article{display:flex;gap:18px;padding:19px 0;border-top:1px solid var(--line)}.concept-benefits article>span{font-size:12px;color:var(--blue);padding-top:4px}.concept-benefits h3{font-size:18px;margin-bottom:8px;letter-spacing:0}.concept-benefits p{font-size:14px;color:var(--muted);margin:0}.concept-poster{margin:0;max-width:480px;justify-self:center;width:100%}.concept-poster>a{display:block;border-radius:22px;overflow:hidden;box-shadow:0 18px 50px #0876df20}.concept-poster img{width:100%;height:auto}.concept-poster figcaption{font-size:11px;color:var(--muted);line-height:1.9;margin-top:16px}.concept-copy .eyebrow{letter-spacing:.08em}@media(max-width:780px){.concept-grid{grid-template-columns:1fr;gap:30px}.concept-copy>p{max-width:none}.concept-benefits{margin:22px 0}.concept-copy h2{font-size:32px}.concept-poster{max-width:440px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}