@charset "UTF-8";
:root{--blue:#2864ff;--purple:#8b4dff;--ink:#142038;--muted:#626e83;--line:#e4e9f2;--pale:#f5f7ff;--radius:28px;--shell:1200px;color-scheme:light;font-family:"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:#fff;font-size:16px;line-height:1.65;font-synthesis:none;scroll-behavior:smooth;scroll-padding-top:100px}
*{box-sizing:border-box}body{margin:0}button,input,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}button{cursor:pointer}img{display:block;max-width:100%;height:auto}h1,h2,h3,p,figure{margin:0}h1,h2,h3{line-height:1.28;letter-spacing:-.04em}h2{font-size:clamp(2rem,3vw,3rem);font-weight:700}h3{font-size:1.8rem;font-weight:650}p{overflow-wrap:break-word}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--purple);outline-offset:5px;border-radius:7px}button:disabled{cursor:default}::selection{background:#dae4ff}.shell{width:min(var(--shell),calc(100% - 64px));margin-inline:auto}.section{padding-block:96px}section[id]{scroll-margin-top:100px}.skip-link{position:fixed;z-index:100;top:12px;left:12px;transform:translateY(-180%);background:var(--ink);color:#fff;padding:12px 20px}.skip-link:focus{transform:translateY(0)}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,233,242,.8)}.header-row{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:9px;font-size:1.5rem;font-weight:750;letter-spacing:-.06em;white-space:nowrap}.brand img{width:34px;height:34px}.brand b{color:var(--blue);font-size:1.5rem;letter-spacing:-.02em}.site-nav{display:flex;align-items:center;gap:32px;font-size:.9rem}.site-nav>a:not(.button){padding:13px 0;color:#4f5b70}.site-nav>a:hover{color:var(--blue)}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:56px;padding:15px 24px;border:1px solid transparent;border-radius:14px;background:var(--blue);color:#fff;font-size:1rem;font-weight:600;line-height:1.4;box-shadow:0 8px 22px #2864ff18;max-width:100%;transition:transform .18s,background .18s}.button:hover{background:#1c50da;transform:translateY(-2px)}.button-small{min-height:46px;padding:12px 18px;font-size:.9rem;border-radius:11px}.button-ghost{background:#fff;border-color:var(--line);color:var(--ink);box-shadow:none}.button-ghost:hover{background:#f5f7ff;color:var(--blue)}.button-secondary{color:var(--blue);background:#eaf0ff;box-shadow:none}.button-secondary:hover{background:#dce7ff}.button-light{color:var(--blue);background:#fff;box-shadow:none}.button-light:hover{background:#f0f4ff}.menu-toggle{display:none;position:relative;border:1px solid var(--line);background:white;border-radius:12px;width:48px;height:48px;padding:12px}.menu-toggle span{display:block;height:2px;width:22px;background:var(--ink);margin:5px 0;transition:.2s}.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
.hero{display:grid;grid-template-columns:1.08fr 1fr;align-items:center;gap:24px;min-height:725px;padding-top:38px;padding-bottom:32px}.hero-copy{padding-block:35px;position:relative;z-index:2;min-width:0}.eyebrow{display:flex;align-items:center;gap:9px;color:#556885;font-size:.85rem;font-weight:500;margin-bottom:23px;letter-spacing:.03em}.eyebrow-dot{width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 5px #edf2ff;flex-shrink:0}.hero h1,.download-hero h1{font-size:clamp(2.65rem,4.25vw,4.2rem);line-height:1.22;font-weight:750}.gradient-text{color:var(--blue);background:linear-gradient(100deg,#2864ff,#8b4dff);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-intro{margin-top:28px;color:var(--muted);font-size:1.02rem;line-height:1.9}.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:30px}.download-hint{font-size:.78rem;color:#7d8799;display:flex;gap:10px;flex-wrap:wrap;margin-top:15px}.download-hint span{color:#bcc3d1}.android-icon{display:inline-block;position:relative;flex:0 0 22px;width:22px;height:16px;background:currentColor;border-radius:7px 7px 4px 4px;margin-top:3px}.android-icon:before{content:"";position:absolute;width:12px;height:4px;top:-4px;left:5px;border-left:1.5px solid currentColor;border-right:1.5px solid currentColor;transform:perspective(10px) rotateX(-25deg)}.android-icon:after{content:"";position:absolute;top:4px;left:5px;width:3px;height:3px;border-radius:50%;background:var(--blue);box-shadow:9px 0 var(--blue)}.button-light .android-icon:after{background:white;box-shadow:9px 0 white}.play-icon{display:inline-block;width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:9px solid currentColor;flex-shrink:0;margin-left:2px}.hero-facts{display:flex;flex-wrap:wrap;gap:30px;margin-top:44px}.hero-facts>div{display:flex;align-items:center;gap:10px}.hero-facts>div:not(:last-child){padding-right:25px;border-right:1px solid var(--line)}.hero-facts strong{font-size:1.8rem;font-weight:650;line-height:1}.hero-facts span{font-size:.78rem;color:var(--muted)}.hero-art{position:relative;min-height:625px;isolation:isolate;min-width:0}.hero-glow{position:absolute;z-index:-1;width:95%;aspect-ratio:1;left:5%;top:15%;border-radius:50%;background:radial-gradient(circle at 32% 35%,#dfedff,#ede5ff 55%,#f7f4ff 72%,transparent 73%);filter:blur(1px)}.hero-orbit{position:absolute;width:94%;height:72%;border:1px solid #e5defa;border-radius:50%;top:13%;left:4%;transform:rotate(-28deg);z-index:-1}.orbit-two{transform:rotate(24deg);width:108%;height:58%;left:-3%;top:20%;border-color:#e5eeff}.phone{position:relative;background:#19243a;border:7px solid #1d293e;border-radius:35px;overflow:hidden;box-shadow:0 28px 48px #1f3b6428,0 3px 4px #17213620;aspect-ratio:9/20}.phone img{width:100%;height:100%;object-fit:cover;object-position:top}.phone-camera{position:absolute;top:7px;left:50%;transform:translateX(-50%);width:52px;height:10px;border-radius:8px;background:#19243a}.hero-phone{width:248px;position:absolute;top:36px;left:42%;transform:translateX(-35%) rotate(5deg);z-index:2}.hero-robot{position:absolute;width:248px;left:-3%;bottom:56px;z-index:3;filter:drop-shadow(0 22px 18px #637dc125)}.float-note{position:absolute;z-index:4;background:rgba(255,255,255,.95);border:1px solid #e9edf7;box-shadow:0 14px 32px #4265ad0f;border-radius:15px;display:flex;align-items:center;gap:11px}.note-top{top:32px;left:0;padding:13px 17px;font-size:.85rem;transform:rotate(-4deg)}.sparkle{color:var(--purple);font-size:1.6rem;line-height:1}.note-bottom{padding:13px 16px;right:-1%;bottom:52px;transform:rotate(-3deg)}.note-bottom img{width:44px;height:44px}.note-bottom strong,.note-bottom span{display:block}.note-bottom strong{font-size:.9rem;line-height:1.4}.note-bottom span{font-size:.7rem;color:var(--muted);margin-top:4px}.art-star{position:absolute;color:#b59bff;font-size:2rem}.star-one{right:3%;top:115px}.star-two{left:14%;top:210px;font-size:2.5rem;color:#8db9ff}.hero-caption{display:flex;align-items:center;justify-content:center;gap:10px;color:#768197;font-size:.78rem;padding-top:10px;padding-bottom:38px;border-bottom:1px solid var(--line);flex-wrap:wrap}.hero-caption a{color:#566581;margin-left:8px}.hero-caption a:hover{color:var(--blue)}.line-dot{width:5px;height:5px;background:#aebbd2;border-radius:50%}
.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}.kicker{font-size:.8rem;color:var(--blue);font-weight:650;margin-bottom:14px;letter-spacing:.08em}.section-heading>p{font-size:.94rem;line-height:1.85;color:var(--muted);padding-bottom:4px;max-width:390px}.feature-grid{display:grid;grid-template-columns:1.13fr 1fr;gap:24px}.feature-card{min-width:0;border-radius:var(--radius);padding:36px;position:relative;overflow:hidden}.feature-index{display:block;color:#7685a0;font-size:.73rem;letter-spacing:.04em;margin-bottom:17px}.feature-card p{font-size:.9rem;color:#67758f;margin-top:18px;max-width:290px;line-height:1.85}.text-action{display:inline-flex;align-items:center;gap:18px;color:var(--blue);font-size:.85rem;font-weight:600;min-height:48px;padding:8px 0;border:0;background:none;max-width:100%;text-align:left;line-height:1.5}.text-action span{font-size:1.25rem}.text-action:hover{color:#8b4dff}.learning-feature{background:#edf4ff;min-height:555px}.feature-copy{position:relative;z-index:2}.learning-feature .text-action{margin-top:13px}.course-stack{position:relative;height:240px;margin-top:36px;max-width:420px;margin-left:8px}.course-stack>img{position:absolute;width:76%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;box-shadow:0 12px 26px #1e488729;border:4px solid white}.cover-back{right:-1%;top:5px;transform:rotate(10deg);opacity:.8}.cover-front{left:0;top:17px;transform:rotate(-7deg)}.mini-lesson{position:absolute;left:18%;bottom:1px;display:flex;align-items:center;gap:14px;background:white;padding:17px 19px;border-radius:15px;box-shadow:0 15px 25px #31559113;width:79%;color:var(--blue)}.mini-lesson>div{min-width:0}.mini-lesson strong{display:block;color:var(--ink);font-size:.8rem;white-space:normal}.mini-lesson span:not(.play-icon):not(.lesson-check){font-size:.7rem;color:#8591a7}.lesson-check{margin-left:auto;border-radius:50%;font-size:.75rem;background:#e8efff;padding:4px 7px;flex-shrink:0}.tools-feature{background:#17284b;color:#fff;min-height:555px}.tools-feature:before{content:"";position:absolute;width:370px;height:370px;background:radial-gradient(circle,#6e58d039,transparent 65%);top:-120px;right:-80px;pointer-events:none}.tools-feature .feature-index{color:#9facce}.tools-feature p{color:#b4c2dc;max-width:340px}.tools-feature .text-action{color:#b7ceff;margin-top:18px}.tools-feature .text-action:hover{color:#fff}.tool-category-grid{display:grid;grid-template-columns:repeat(3,1fr);margin-top:30px;gap:22px 14px}.tool-category-grid figure{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.tool-category-grid img{width:54px;height:54px;object-fit:contain}.tool-category-grid figcaption{font-size:.76rem;color:#c5d2ed}.community-feature{margin-top:24px;display:grid;grid-template-columns:1fr 1.15fr;align-items:center;background:#f7f5fc;padding:38px 42px;border-radius:var(--radius);gap:24px;min-height:370px;overflow:hidden}.community-feature p{margin-top:18px;color:var(--muted);font-size:.92rem;line-height:1.85}.community-feature .text-action{margin-top:14px}.community-feature small{display:block;max-width:350px;color:#8590a3;font-size:.7rem;margin-top:9px}.community-art{position:relative;min-height:290px}.work-card{position:absolute;background:#fff;border:5px solid #fff;border-radius:18px;overflow:hidden;box-shadow:0 16px 32px #35266016;width:43%}.work-card img{width:100%;height:208px;object-fit:cover}.work-card figcaption{padding:8px 6px 5px;font-size:.65rem;color:#718096;line-height:1.4}.work-person{left:10%;top:7px;transform:rotate(-8deg);z-index:2}.work-cat{right:2%;top:40px;transform:rotate(9deg)}.community-label{position:absolute;bottom:5px;left:7%;background:#fff;border-radius:30px;padding:10px 18px;color:#8176b5;box-shadow:0 7px 17px #7860970c;font-size:.75rem;z-index:3}
.preview-section{background:#f6f8fc;position:relative}.screen-tabs{display:flex;gap:10px;padding:6px;border:1px solid #e6eaf2;border-radius:14px;width:max-content;max-width:100%;background:#fff;overflow-x:auto;scrollbar-width:thin;margin-bottom:36px}.screen-tabs button{border:0;min-height:46px;min-width:91px;padding:11px 24px;border-radius:10px;background:transparent;color:#728097;font-size:.85rem;white-space:nowrap;line-height:1.5;flex-shrink:0}.screen-tabs button[aria-selected="true"]{color:white;background:var(--blue);box-shadow:0 4px 10px #2864ff20}.screen-tabs button:hover:not([aria-selected="true"]){background:#f2f5fc;color:var(--blue)}.preview-stage{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:12px 50px 0;min-width:0}.preview-copy{max-width:420px;min-width:0}.preview-number{font-size:.72rem;letter-spacing:.05em;color:#8a96ab;display:block;margin-bottom:22px}.preview-copy h3{font-size:2.2rem}.preview-copy>p:not(.preview-status){margin-top:24px;color:var(--muted);font-size:.94rem;line-height:1.9}.preview-points{list-style:none;margin:26px 0 24px;padding:0;display:grid;gap:13px}.preview-points li{position:relative;padding-left:24px;font-size:.86rem;color:#506481;line-height:1.8}.preview-points li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-size:.75rem}.preview-status{font-size:.72rem;color:#8590a3;padding-top:16px;border-top:1px solid #e1e7f1;line-height:1.8}.preview-copy .text-action{margin-top:17px}.preview-screen-wrap{position:relative;display:flex;flex-direction:column;align-items:center;gap:23px;isolation:isolate;min-width:0}.preview-phone{width:254px;border-radius:36px;box-shadow:0 18px 45px #2b447427}.preview-halo{position:absolute;z-index:-1;width:370px;height:370px;max-width:100%;border-radius:50%;background:linear-gradient(130deg,#dfeeff,#e8dffc);top:17%;opacity:.75}.screen-caption{font-size:.68rem;letter-spacing:.03em;color:#8b96a7}.preview-phone img{transition:opacity .18s}.preview-phone img.loading{opacity:.45}
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