:root{--ink:#1d2d43;--muted:#65758c;--blue:#1268d1;--line:#e6edf5;--paper:#f8fbff;color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0;background:var(--paper);color:var(--ink);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}a,button,input{outline-offset:5px}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #1475ed}img{display:block;max-width:100%;height:auto}h1,h2,h3,p{margin:0}h1,h2,h3{letter-spacing:-.035em}button svg,a svg{flex-shrink:0}.container{width:min(1160px,calc(100% - 72px));margin-inline:auto}.icon{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;vertical-align:middle}.icon-definitions{position:absolute;width:0;height:0;overflow:hidden}.skip-link{position:fixed;left:20px;top:-90px;z-index:30;padding:12px 20px;background:white;color:var(--blue)}.skip-link:focus{top:12px}.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
/* The first screen introduces the product with a working task example. */
.site-header{height:80px;border-bottom:1px solid #e9eff7}.header-inner{height:100%;display:flex;align-items:center;gap:32px}.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;min-height:44px}.brand img{border-radius:12px}.brand>span{display:flex;align-items:baseline;gap:9px;font-weight:730;font-size:23px;letter-spacing:-.04em}.brand small{font-size:10px;font-weight:550;color:#7291bc;letter-spacing:.12em}.header-nav{margin-left:auto;font-size:14px;color:#61738a}.header-nav a{display:block;padding:12px 4px}.header-nav a:hover{color:var(--blue)}.header-cta{min-height:44px;border:1px solid #dce6f4;border-radius:999px;padding:8px 18px;display:flex;align-items:center;gap:12px;color:var(--blue);font-size:14px;font-weight:600;background:#ffffffa6}.header-cta .icon{width:18px}.header-cta:hover{background:#edf5ff}
.hero{min-height:max(620px,calc(100svh - 80px));display:grid;grid-template-columns:.94fr 1.06fr;gap:60px;align-items:center;padding-block:50px 62px}.eyebrow{font-size:13px;font-weight:550;letter-spacing:.04em;color:#6b86a4;display:flex;align-items:center;gap:10px}.tiny-mark{width:7px;height:7px;border-radius:50%;background:#91b9ed;box-shadow:0 0 0 5px #eaf2fd}.hero h1{font-size:64px;line-height:1.25;font-weight:760;margin-top:25px;white-space:nowrap;letter-spacing:-.045em}.hero h1>span{color:var(--blue)}.hero-description{font-size:17px;line-height:1.95;color:var(--muted);margin:25px 0 32px}.button{border:0;display:inline-flex;align-items:center;justify-content:center;gap:30px;min-height:54px;border-radius:13px;padding:12px 25px;font-size:15px;font-weight:600;line-height:1.5;transition:background .2s,transform .2s}.button-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px #1268d11a}.button-primary:hover{background:#0e5cbf;transform:translateY(-2px)}.button .icon{width:19px;height:19px}.hero-note{margin-top:25px;color:#8997aa;font-size:12px;display:flex;align-items:center;gap:12px}
.hero-visual{position:relative;isolation:isolate;padding:30px 5px 90px 18px}.visual-orbit{position:absolute;inset:-18px -42px -2px;z-index:-1;pointer-events:none;background:radial-gradient(ellipse at 52% 50%,#e0ecfc 0,#edf4fe 48%,transparent 72%)}.task-board{background:white;border:1px solid #e1eaf5;box-shadow:0 24px 65px #607fa314,0 2px 4px #6e96c408;border-radius:24px;padding:28px 27px 30px;transform:rotate(-2deg);position:relative}.board-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.board-overline{font-size:10px;line-height:1.3;letter-spacing:.15em;color:#9aaac0;margin-bottom:6px}.board-heading h2{font-size:25px;font-weight:700;line-height:1.4}.demo-label{color:#8d9aab;font-size:11px;white-space:nowrap}.demo-progress{display:flex;align-items:center;gap:16px;margin:24px 0 17px;font-size:12px;color:#7d8ea3}.progress-track{height:4px;background:#edf1f8;border-radius:9px;flex:1;overflow:hidden}.progress-track>span{display:block;height:100%;width:33.3333%;background:#8db8ee;border-radius:9px;transition:width .25s}.demo-list{display:grid;gap:11px}.demo-task{position:relative;display:flex;align-items:center;gap:13px;padding:16px;min-height:81px;border-radius:12px;cursor:pointer}.task-blue{background:#edf5ff;--task-accent:#82ade2}.task-purple{background:#f3effb;--task-accent:#b29adb}.task-orange{background:#fff3e8;--task-accent:#dcb285}.demo-task input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer;z-index:1}.task-check{width:21px;height:21px;flex-shrink:0;border:1.5px solid var(--task-accent);border-radius:6px;display:grid;place-items:center;background:#ffffff80}.task-check svg{width:14px;height:14px;stroke-width:2.2;color:#fff;opacity:0}.demo-task input:checked+.task-check{background:var(--task-accent)}.demo-task input:checked+.task-check svg{opacity:1}.demo-task input:checked~.task-copy strong{text-decoration:line-through;color:#949195}.demo-task input:focus-visible~.task-copy{outline:2px solid var(--blue);outline-offset:5px;border-radius:2px}.task-copy{flex:1}.task-copy strong{display:block;font-size:15px;font-weight:600;line-height:1.6}.task-copy>span{display:block;color:#8792a2;font-size:11px;margin-top:4px}.task-copy i{font-style:normal;margin-left:9px;border-left:1px solid #ccd3df;padding-left:9px}.task-dot{width:5px;height:5px;border-radius:50%;background:var(--task-accent);opacity:.7}.demo-hint{position:absolute;bottom:26px;left:28px;color:#97a5b8;font-size:12px}.event-note{position:absolute;right:-14px;bottom:4px;min-width:192px;padding:17px 24px 15px;border:1px solid #dce7f8;border-radius:17px;background:linear-gradient(135deg,#f4faff,#eaf2ff 65%,#eeebfd);box-shadow:0 12px 30px #476a9d16;transform:rotate(3deg)}.event-tag{display:flex;align-items:center;gap:6px;color:#8095b2;font-size:10px}.event-tag .icon{width:13px;height:13px}.event-note>strong{display:block;font-size:17px;font-weight:650;margin-top:9px}.event-note p{font-size:12px;color:#8997ae;margin-top:5px;line-height:1.2}.event-note b{font-family:"Helvetica Neue",Arial,sans-serif;font-size:39px;line-height:1.1;font-weight:400;color:#3278f5;margin-inline:5px}
/* One second screen contains the complete feature summary and the WeChat entry. */
.details-section{background:#fff;border-top:1px solid var(--line);min-height:calc(100svh - 72px);display:flex;align-items:center;padding:52px 0 38px}.details-inner{width:min(1160px,calc(100% - 72px))}.section-heading .eyebrow{font-size:12px;color:#8699b2;margin-bottom:9px}.section-heading h2{font-size:34px;font-weight:700;line-height:1.4}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:30px}.feature{padding:0 32px 0 34px;position:relative}.feature:first-child{padding-left:0}.feature:last-child{padding-right:0}.feature+.feature{border-left:1px solid var(--line)}.feature-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:19px}.feature-icon{width:43px;height:43px;border-radius:13px;display:grid;place-items:center}.feature-icon .icon{width:24px;height:24px;stroke-width:1.7}.feature-blue .feature-icon{background:#edf5ff;color:#6b9edc}.feature-purple .feature-icon{background:#f2edfb;color:#a08ac8}.feature-orange .feature-icon{background:#fff2e6;color:#cd9a64}.feature-number{font:300 28px/1 "Helvetica Neue",Arial,sans-serif;color:#dce4ef}.feature h3{font-size:20px;line-height:1.5;font-weight:650;margin-bottom:10px;letter-spacing:-.025em}.feature p{color:var(--muted);font-size:14px;line-height:1.95;max-width:300px}
.wechat-entry{margin-top:44px;display:grid;grid-template-columns:.85fr 1.25fr 164px;gap:32px;align-items:center;padding:29px 34px;background:linear-gradient(110deg,#eff6ff,#f5f8ff 64%,#f2f4ff);border:1px solid #e2ebf8;border-radius:22px;scroll-margin-top:32px}.wechat-label{display:flex;align-items:center;gap:7px;font-size:12px;color:#7993b6}.wechat-dot{width:6px;height:6px;border-radius:50%;background:#78b99c}.wechat-intro h2{font-size:30px;line-height:1.45;font-weight:650;margin-top:10px;letter-spacing:-.04em}.search-label{font-size:13px;font-weight:500;color:#72849f;margin-bottom:12px}.search-field{display:flex;align-items:center;gap:10px;background:white;border:1px solid #dce7f7;border-radius:11px;min-height:58px;padding:6px 7px 6px 16px;box-shadow:0 3px 9px #5b78a005}.search-field>.icon{width:19px;height:19px;color:#89a2c5;flex-shrink:0}#app-name{font-size:18px;font-weight:600;white-space:nowrap;letter-spacing:-.025em;user-select:all;outline-offset:2px}.copy-button{margin-left:auto;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;min-width:44px;border:0;border-radius:8px;background:#edf4ff;color:#3976c4;padding:9px 12px;font-size:12px;white-space:nowrap;transition:background .2s}.copy-button .icon{width:14px;height:14px}.copy-button:hover{background:#dfecff}.copy-button:disabled{opacity:.6}.search-hint{font-size:12px;color:#8798b1;line-height:1.8;margin-top:13px}.wechat-code{display:grid;justify-items:center;gap:8px}.code-button{display:block;border:0;background:#fff;border-radius:18px;padding:10px;box-shadow:0 4px 16px #5579ab08}.mini-code-art{display:block;position:relative;overflow:hidden;border-radius:50%;width:138px;aspect-ratio:1;background:white}.mini-code-art img{position:absolute;max-width:none;width:323.214285714%;height:auto;left:-9.523809524%;top:-9.523809524%}.wechat-code p{color:#8b9bb0;font-size:11px;letter-spacing:.02em}.code-button:hover{box-shadow:0 4px 18px #5579ab1c}.code-button:hover .mini-code-art{opacity:.85}
.site-footer{background:#fff;min-height:72px}.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px;border-top:1px solid #edf1f7;color:#98a4b5;font-size:11px}.footer-bottom a{display:flex;align-items:center;min-height:44px}.footer-bottom a:hover{color:var(--blue)}
dialog{position:fixed;border:1px solid #dfe8f5;border-radius:23px;background:#fff;padding:32px 36px 27px;width:min(380px,calc(100% - 36px));max-height:calc(100dvh - 36px);overflow:auto;text-align:center;color:var(--ink);box-shadow:0 30px 90px #142d4e33}dialog::backdrop{background:#1d2d4366;backdrop-filter:blur(4px)}.dialog-close{position:absolute;right:6px;top:6px;width:44px;height:44px;background:none;border:0;display:grid;place-items:center;color:#8b9bb0}.dialog-close .icon{width:19px;height:19px}dialog h2{font-size:23px;font-weight:650;padding-top:8px}dialog p{font-size:13px;color:#79879a;line-height:1.8}.dialog-code{width:244px;max-width:100%;margin:24px auto 18px}.toast{position:fixed;z-index:10;left:50%;bottom:28px;transform:translate(-50%,15px);background:#213853;color:white;padding:12px 20px;border-radius:12px;font-size:13px;text-align:center;max-width:calc(100% - 32px);width:max-content;opacity:0;visibility:hidden;transition:opacity .15s,transform .15s;pointer-events:none;box-shadow:0 4px 15px #182b3e22}.toast.visible{opacity:1;visibility:visible;transform:translate(-50%,0)}.noscript-message{padding:20px;text-align:center;color:#657997;font-size:13px}
/* Retain the existing standalone legal document. */
.legal-page{max-width:780px;margin:65px auto 85px}.legal-page .eyebrow{margin-bottom:14px}.legal-page h1{font-size:38px;line-height:1.4;margin-bottom:15px}.legal-page .legal-intro{font-size:16px;color:#6c7d94;margin-bottom:30px}.legal-page section{padding-top:25px;margin-top:25px;border-top:1px solid var(--line)}.legal-page h2{font-size:20px;margin-bottom:10px}.legal-page section p,.legal-page li{font-size:15px;color:#60718b;line-height:1.95}.legal-page section p+p{margin-top:12px}.legal-page a{color:var(--blue);overflow-wrap:anywhere}.legal-page ul{padding-left:22px}
@media(min-width:901px) and (max-height:800px){.hero{min-height:calc(100svh - 80px);padding-block:30px 42px}.hero-visual{padding-top:20px}.task-board{padding-block:24px}.demo-task{min-height:75px}.details-section{padding-block:35px 25px}.section-heading h2{font-size:30px}.feature-grid{margin-top:24px}.feature-top{margin-bottom:15px}.wechat-entry{margin-top:32px;padding-block:25px}}
@media(min-width:901px) and (max-width:1150px){.hero{gap:35px;grid-template-columns:.93fr 1.07fr}.hero h1{font-size:54px}.hero-description{font-size:15px}.task-board{padding-inline:22px}.board-heading h2{font-size:23px}.demo-task{padding-inline:13px}.event-note{right:-7px;min-width:178px}.wechat-entry{grid-template-columns:.75fr 1.25fr 138px;gap:24px;padding-inline:26px}.wechat-intro h2{font-size:27px}.mini-code-art{width:116px}.dialog-code{width:244px}.feature{padding-inline:26px}.search-field{padding-left:10px;gap:6px}#app-name{font-size:16px}.copy-button{padding-inline:9px}.copy-button .icon{display:none}.search-hint{font-size:11px}}
@media(max-width:900px){
  .container,.details-inner{width:calc(100% - 40px)}.site-header{height:72px}.header-inner{gap:15px}.brand img{width:36px;height:36px;border-radius:10px}.brand>span{font-size:20px;gap:6px}.brand small{font-size:8px}.header-nav{display:none}.header-cta{margin-left:auto;font-size:12px;padding:8px 12px;gap:5px}.header-cta .icon{width:15px}
  .hero{display:flex;flex-direction:column;align-items:stretch;gap:30px;min-height:0;padding-block:45px 37px}.hero-copy{padding-inline:2px}.hero-copy .eyebrow{font-size:11px}.hero h1{font-size:clamp(40px,10.7vw,58px);margin-top:20px;line-height:1.25}.hero-description{font-size:15px;margin:20px 0 24px;max-width:25em;line-height:1.9}.desktop-break{display:none}.hero .button{min-height:50px;padding-inline:20px;font-size:14px;gap:27px}.hero-note{font-size:11px;gap:10px;margin-top:19px}.hero-visual{width:min(470px,100%);align-self:center;padding:18px 5px 91px;margin-top:2px}.visual-orbit{inset:0 -15px 0}.task-board{padding:22px 19px 24px;border-radius:20px;transform:rotate(-1.5deg)}.board-overline{font-size:8px}.board-heading h2{font-size:23px}.demo-label{font-size:9px}.demo-progress{font-size:11px;margin:20px 0 14px}.demo-list{gap:9px}.demo-task{min-height:74px;padding:13px 12px;gap:11px}.task-copy strong{font-size:14px}.task-copy>span{font-size:10px}.task-check{width:19px;height:19px}.event-note{min-width:166px;right:2px;bottom:4px;padding:14px 19px;border-radius:15px}.event-note>strong{font-size:16px;margin-top:7px}.event-note b{font-size:34px}.demo-hint{font-size:10px;left:7px;bottom:29px}
  .details-section{min-height:0;padding:37px 0 31px}.section-heading .eyebrow{font-size:11px;margin-bottom:8px}.section-heading h2{font-size:28px}.feature-grid{display:block;margin-top:21px}.feature{padding:24px 0 23px 62px;min-height:136px}.feature:first-child{padding-left:62px}.feature:last-child{padding-right:0}.feature+.feature{border-left:0;border-top:1px solid var(--line)}.feature-top{margin:0}.feature-icon{position:absolute;left:0;top:26px;width:42px;height:42px;border-radius:12px}.feature-icon .icon{width:23px;height:23px}.feature-number{position:absolute;right:1px;top:27px;font-size:21px}.feature h3{font-size:18px;padding-right:30px;margin-bottom:8px}.feature p{font-size:14px;line-height:1.85;max-width:none}
  .wechat-entry{grid-template-columns:1fr;gap:25px;margin-top:19px;padding:26px 23px 24px;border-radius:19px}.wechat-intro h2{font-size:27px;margin-top:8px}.wechat-intro h2 br{display:none}.wechat-label{font-size:11px}.search-label{font-size:12px;margin-bottom:10px}.search-field{gap:7px;padding-left:12px;min-height:56px}.search-field>.icon{width:17px;height:17px}#app-name{font-size:16px}.copy-button{padding-inline:10px;font-size:12px}.copy-button>.icon{display:none}.search-hint{font-size:11px;line-height:1.8;margin-top:10px}.wechat-code{gap:8px;margin-top:0}.mini-code-art{width:146px}.code-button{padding:12px;border-radius:17px}.wechat-code p{font-size:11px}.dialog-code{width:244px}
  .site-footer{min-height:87px}.footer-bottom{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;min-height:87px;gap:0;font-size:10px;padding-block:15px}.footer-bottom a{min-height:30px}.legal-page{margin-block:38px 55px}.legal-page h1{font-size:29px}.legal-page .legal-intro{font-size:14px}.legal-page section p,.legal-page li{font-size:14px}
}
@media(max-width:360px){.container,.details-inner{width:calc(100% - 32px)}.brand>span{font-size:18px}.brand small{display:none}.header-cta{font-size:11px;padding-inline:10px}.hero h1{font-size:38px}.task-board{padding-inline:16px}.board-heading h2{font-size:21px}.demo-label{font-size:8px}.demo-hint{font-size:9px}.event-note{min-width:150px;padding-inline:16px}.feature{padding-left:56px}.feature:first-child{padding-left:56px}.feature h3{font-size:17px}.feature p{font-size:13px}.wechat-entry{padding-inline:18px}.wechat-intro h2{font-size:24px}.search-field>.icon{display:none}#app-name{font-size:16px}.search-field{padding-left:11px}}
/* Desktop uses a single product panel and consistent, aligned content rows. */
@media(min-width:901px){
  .container,.details-inner{width:min(1120px,calc(100% - 80px))}
  .hero{grid-template-columns:1fr 1fr;gap:80px;padding-block:48px}
  .hero h1{font-size:62px;line-height:1.25}
  .hero-description{font-size:16px;line-height:1.95;margin-block:24px 30px}
  .hero-note{margin-top:24px}
  .hero-visual{padding:30px;background:#fff;border:1px solid #e0e8f2;border-radius:20px;box-shadow:0 20px 56px #486c9510}
  .visual-orbit,.board-overline,.demo-hint{display:none}
  .task-board{padding:0;border:0;border-radius:0;background:none;box-shadow:none;transform:none}
  .board-heading h2{font-size:24px;line-height:1.5}
  .demo-label{font-size:11px}
  .demo-progress{margin:22px 0 18px}
  .demo-task{min-height:78px;padding:14px 16px;border-radius:10px}
  .event-note{position:static;min-width:0;margin-top:24px;padding:20px 0 0;border:0;border-top:1px solid var(--line);border-radius:0;background:none;box-shadow:none;transform:none;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px}
  .event-tag{font-size:11px;gap:6px}
  .event-tag .icon{width:16px;height:16px}
  .event-note>strong{font-size:16px;line-height:1.5;margin:0;font-weight:600}
  .event-note p{margin:0;font-size:11px;white-space:nowrap}
  .event-note b{font-size:34px}
  .details-section{padding-block:42px}
  .section-heading{text-align:center}
  .section-heading .eyebrow{justify-content:center;margin-bottom:10px}
  .section-heading h2{font-size:34px;line-height:1.4}
  .feature-grid{margin-top:42px}
  .feature{display:grid;grid-template-columns:43px 1fr;grid-template-rows:43px auto;column-gap:14px;row-gap:17px;padding-inline:32px}
  .feature-top{margin:0;display:block}
  .feature-number{display:none}
  .feature h3{align-self:center;font-size:20px;margin:0;line-height:1.5}
  .feature p{grid-column:1/-1;font-size:15px;line-height:1.9;max-width:none}
  .wechat-entry{margin-top:46px;grid-template-columns:minmax(0,1fr) 208px;grid-template-rows:auto auto;column-gap:80px;row-gap:20px;padding:30px 44px;background:#f3f7fd;border-radius:18px}
  .wechat-intro{grid-column:1;grid-row:1}
  .wechat-intro h2{font-size:28px;line-height:1.45;margin-top:6px}
  .wechat-intro h2 br{display:none}
  .wechat-search{grid-column:1;grid-row:2;max-width:450px}
  .search-label{margin-bottom:8px;font-size:12px}
  .search-field{min-height:56px}
  .search-hint{margin-top:8px;font-size:12px}
  .wechat-code{grid-column:2;grid-row:1/3;gap:10px}
  .mini-code-art{width:152px}
  .dialog-code{width:244px}
  .code-button{padding:10px;border-radius:16px}
  .wechat-code p{font-size:12px}
}
@media(min-width:901px) and (max-width:1150px){
  .hero{gap:48px}.hero h1{font-size:52px}.hero-description{font-size:15px}.hero-visual{padding:24px}.event-note{gap:10px}.event-note>strong{font-size:14px}.event-tag{font-size:10px}.event-note b{font-size:29px}
  .feature{padding-inline:25px;column-gap:11px}.feature h3{font-size:18px}.feature p{font-size:14px}.wechat-entry{column-gap:45px;padding-inline:34px}.search-field{padding-left:16px;gap:10px}#app-name{font-size:18px}
}
@media(min-width:901px) and (max-height:800px){
  .hero{padding-block:32px}.details-section{padding-block:32px}.section-heading h2{font-size:32px}.feature-grid{margin-top:32px}.wechat-entry{margin-top:36px;padding-block:26px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}