:root{color-scheme:light;--ink:#111;--muted:#636363;--line:#dedede;--white:#fff;font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",sans-serif;color:var(--ink);background:var(--white);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0}a{color:inherit;text-decoration:none}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button,a{touch-action:manipulation}button{background:none}button:focus-visible,a:focus-visible{outline:3px solid #777;outline-offset:5px}svg{display:block}.svg-symbols{position:absolute;width:0;height:0;overflow:hidden}.icon{width:24px;height:24px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.shell{width:min(1200px,calc(100% - 72px));margin:auto}.skip-link{position:fixed;top:-100px;left:20px;z-index:10;background:#111;color:white;padding:12px 20px;border-radius:8px}.skip-link:focus{top:12px}.header{min-height:98px;display:flex;align-items:center;justify-content:space-between;border-bottom:1.5px solid var(--ink)}.brand{display:inline-flex;align-items:center;gap:15px;font-size:30px;font-weight:900;letter-spacing:-1px}.fish-mark{position:relative;display:block;width:29px;height:58px;overflow:hidden;flex:none}.fish-mark img{position:absolute;width:78px;height:78px;max-width:none;left:50%;top:50%;transform:translate(-50%,-50%)}nav{display:flex;gap:44px;align-items:center;font-size:18px;font-weight:700}.text-button{padding:12px 0;border:0;font-weight:700}nav a:hover,.text-button:hover{text-decoration:underline;text-underline-offset:7px}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;align-items:center;padding:62px 28px 66px;min-height:510px;overflow:hidden}.hero h1{font-size:clamp(46px,5.15vw,68px);line-height:1.35;letter-spacing:-2.5px;font-weight:900;margin:0 0 25px}.hero h1 span{display:block;white-space:nowrap}.hero-copy>p{font-size:21px;line-height:1.8;margin:0 0 30px}.actions{display:flex;gap:18px;flex-wrap:wrap;align-items:center}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:54px;padding:12px 26px;border:2px solid var(--ink);border-radius:999px;font-size:18px;line-height:1.4;font-weight:700;background:white;transition:transform .18s,box-shadow .18s}.button:hover{transform:translateY(-3px);box-shadow:3px 4px 0 #111}.button:active{transform:translateY(0);box-shadow:none}.button.primary{background:var(--ink);color:white}.button.primary:hover{box-shadow:3px 4px 0 #999}.hero-art{position:relative;min-width:0;height:390px}.hero-fish{position:absolute;width:460px;height:460px;max-width:none;top:50%;left:50%;transform:translate(-50%,-50%);mix-blend-mode:multiply;pointer-events:none}.orbit{position:absolute;width:100%;height:100%;inset:0;fill:none;stroke:#111;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.orbit .star{fill:#111;stroke-width:2}.section{border-top:1.5px solid var(--ink);padding-left:28px;padding-right:28px}.software{padding-top:30px;padding-bottom:40px;scroll-margin-top:25px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:35px;gap:20px}.section-heading h2{font-size:34px;letter-spacing:-1.5px;margin:0;font-weight:900}.section-heading>p{font-size:15px;font-weight:600;margin:0}.product{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}.product h3{font-size:36px;letter-spacing:-1.4px;margin:0 0 8px;line-height:1.45;font-weight:900}.version{font-size:17px;margin:0 0 22px}.product-intro{font-size:21px;margin:0 0 23px}.features{list-style:none;display:flex;padding:0;margin:0 0 30px;gap:0;font-size:15px;font-weight:600}.features li{display:flex;align-items:center;gap:9px;padding:0 16px;border-right:1px solid var(--line);white-space:nowrap}.features li:first-child{padding-left:0}.features li:last-child{border-right:0;padding-right:0}.features .icon{width:26px;height:26px}.product .actions{gap:14px}.product .button{padding:12px 22px;font-size:17px}.download-note{color:var(--muted);font-size:12px;line-height:1.7;margin:16px 0 0}.demo{border:3px solid #111;border-radius:18px;overflow:hidden;background:white}.demo-chrome{height:34px;display:flex;align-items:center;gap:8px;padding:0 16px;border-bottom:2px solid #111}.demo-chrome i{width:9px;height:9px;background:#111;border-radius:50%}.demo-content{padding:20px 22px 14px}.demo-word{font-size:34px;line-height:1.3;letter-spacing:-1px;font-weight:850}.demo-word span{font-size:14px;font-weight:400;letter-spacing:0;color:var(--muted);margin-left:10px}.example{font-family:Arial,sans-serif;font-size:18px;line-height:1.55;background:#f5f5f5;border-radius:9px;padding:13px 15px;margin:14px 0}.demo-prompt{font-size:13px;color:var(--muted);line-height:1.5;margin:13px 0 10px}.answers{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:7px}.answers button{min-height:54px;padding:7px 8px;border:1.5px solid #111;border-radius:8px;font-family:Arial,sans-serif;font-size:12px;line-height:1.35;font-weight:600;transition:background .15s,color .15s}.answers button:hover{background:#f0f0f0}.answers button.selected{background:#111;color:white}.demo-feedback{font-size:12px;line-height:1.6;min-height:20px;margin:12px 0 0;color:var(--muted)}.demo-caption{font-size:11px;line-height:1.5;color:var(--muted);margin:10px 0 0;text-align:right}.support{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-top:31px;padding-bottom:31px}.support h2{font-size:28px;line-height:1.5;letter-spacing:-1px;margin:0 0 8px;font-weight:900}.support p{font-size:14px;line-height:1.8;margin:0}.support-button{white-space:nowrap;flex:none;padding:15px 29px}.footer{border-top:1.5px solid #111;min-height:72px;display:flex;align-items:center;gap:24px;font-size:12px}.footer .brand{font-size:17px;gap:8px;letter-spacing:0}.footer .fish-mark{width:15px;height:32px}.footer .fish-mark img{width:43px;height:43px}.footer-line{border-left:1px solid #999;padding-left:24px}.copyright{margin-left:auto;color:var(--muted)}dialog{width:min(460px,calc(100% - 32px));max-height:calc(100dvh - 40px);padding:26px;border:2px solid #111;border-radius:20px;background:#fff;color:#111;overflow-y:auto;overscroll-behavior:contain}dialog::backdrop{background:rgb(0 0 0 / .48);backdrop-filter:blur(3px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.dialog-head h2{font-size:24px;line-height:1.5;margin:0;font-weight:850}.close-button{width:40px;height:40px;display:flex;align-items:center;justify-content:center;flex:none;border:1.5px solid #ccc;border-radius:50%}.close-button:hover{background:#f4f4f4}.dialog-intro{font-size:13px;line-height:1.8;color:var(--muted);margin:12px 0 20px}.payment-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:0 0 18px}.payment-tabs button{border:1.5px solid #111;border-radius:999px;min-height:44px;padding:10px;font-size:15px;font-weight:700}.payment-tabs button[aria-selected=true]{background:#111;color:white}#payment-image{display:block;width:100%;height:auto;border-radius:12px}#payment-panel{min-width:0}.save-button{width:100%;font-size:15px;min-height:48px;margin-top:16px}.dialog-footnote{font-size:12px;line-height:1.8;color:var(--muted);margin:17px 0 0}#guide-dialog{width:min(600px,calc(100% - 32px))}.guide-steps{padding-left:22px;margin:0}.guide-steps li{padding-left:5px;margin:0 0 20px}.guide-steps strong{font-size:16px}.guide-steps p{font-size:14px;line-height:1.9;margin:6px 0 0}.guide-notes{border-top:1px solid var(--line);padding-top:10px;margin:0 0 20px}.guide-notes p{font-size:12px;color:var(--muted);line-height:1.8;margin:8px 0}
@media(min-width:1500px){.hero{padding-top:78px;padding-bottom:78px}}
@media(max-width:1000px){.shell{width:calc(100% - 48px)}.hero{padding-left:12px;padding-right:12px;grid-template-columns:1.3fr 1fr;min-height:430px;padding-top:45px;padding-bottom:45px}.hero h1{font-size:clamp(40px,5.4vw,54px);letter-spacing:-2px}.hero-copy>p{font-size:17px}.hero-art{height:310px}.hero-fish{width:380px;height:380px}.button{font-size:16px;padding:11px 20px;min-height:50px}.section{padding-left:12px;padding-right:12px}.product{gap:25px}.product h3{font-size:29px}.features{flex-wrap:wrap;row-gap:12px}.features li{font-size:13px;padding:0 10px}.product-intro{font-size:18px}.product .button{font-size:15px;padding:10px 17px}.demo-content{padding:16px}.answers{grid-template-columns:1fr}.answers button{min-height:37px}.support h2{font-size:24px}.support p{font-size:13px}}
@media(max-width:700px){.shell{width:calc(100% - 40px)}.header{min-height:80px}.brand{font-size:23px;gap:9px}.fish-mark{width:22px;height:45px}.fish-mark img{width:61px;height:61px}nav{gap:20px;font-size:14px}.hero{grid-template-columns:1fr;padding:44px 0 30px;gap:9px}.hero h1{font-size:clamp(28px,7.5vw,46px);letter-spacing:-1.5px;line-height:1.4;margin-bottom:18px}.hero-copy>p{font-size:15px;line-height:1.9;margin-bottom:23px}.actions{gap:10px}.button{font-size:14px;padding:11px 17px;min-height:46px;gap:9px}.button .icon{width:20px;height:20px}.hero-art{height:256px;width:100%;max-width:380px;justify-self:center}.hero-fish{width:320px;height:320px}.orbit{stroke-width:3.5}.section{padding-left:0;padding-right:0}.section-heading{margin-bottom:24px;align-items:baseline}.section-heading h2{font-size:28px}.section-heading>p{font-size:11px}.software{padding-top:24px;padding-bottom:28px}.product{grid-template-columns:1fr;gap:30px}.product h3{font-size:28px}.version{font-size:14px;margin-bottom:16px}.product-intro{font-size:18px;margin-bottom:20px}.features{margin-bottom:24px;font-size:13px;flex-wrap:nowrap}.features li{gap:7px;padding:0 12px}.features .icon{width:20px;height:20px}.product .button{font-size:14px;padding:11px 17px}.download-note{font-size:11px}.demo-content{padding:20px 16px 13px}.demo-word{font-size:31px}.example{font-size:17px}.answers{grid-template-columns:1fr 1fr 1fr}.answers button{min-height:60px;font-size:11px;padding:6px}.demo-caption{font-size:10px}.support{align-items:flex-start;flex-direction:column;gap:22px;padding-top:25px;padding-bottom:28px}.support h2{font-size:25px;letter-spacing:-1px}.support p{font-size:13px;line-height:1.9}.support-button{min-height:48px;font-size:15px;padding:11px 22px}.footer{flex-wrap:wrap;gap:14px;min-height:90px;padding:16px 0}.footer .brand{font-size:15px}.footer-line{padding-left:14px;font-size:10px}.copyright{width:100%;margin-left:0;font-size:10px}.dialog-head h2{font-size:21px}dialog{padding:20px;max-height:calc(100dvh - 24px)}}
@media(max-width:360px){nav{gap:12px;font-size:12px}.features li{padding:0 7px;gap:5px;font-size:12px}.features .icon{width:18px;height:18px}.hero h1{letter-spacing:-1px}.product h3{font-size:25px}.actions .button{padding-left:14px;padding-right:14px}.section-heading>p{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}.button:hover{transform:none}}

.product-links{display:flex;align-items:center;gap:14px;font-size:13px;margin-top:14px}.product-links .text-button{font-size:13px;font-weight:500;padding:2px 0}.product-links a{text-decoration:underline;text-underline-offset:4px}.product-links span{color:#aaa}.product-links+.download-note{margin-top:8px}