:root{color-scheme:light;--blue:#0756b8;--deep:#123864;--ink:#182b42;--muted:#56667a;--line:#dfe7f0;--pale:#f1f6fc;--white:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;color:var(--ink);background:var(--white);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;line-height:1.8}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.4}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}a:focus-visible,summary:focus-visible{outline:3px solid #dd9400;outline-offset:5px;border-radius:3px}img{max-width:100%;height:auto}a,summary{-webkit-tap-highlight-color:transparent}::selection{background:#dbeaff}section[id]{scroll-margin-top:28px}.container{width:min(1160px,calc(100% - 80px));margin-inline:auto}.skip-link{position:absolute;top:8px;left:8px;transform:translateY(-160%);background:white;padding:8px 16px;z-index:10}.skip-link:focus{transform:none}.site-header{border-bottom:1px solid var(--line)}.header-inner{min-height:94px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand img{width:46px;height:46px}.brand>span{display:flex;align-items:baseline;gap:12px}.brand strong{font-size:21px;letter-spacing:1px;color:var(--deep)}.brand>span>span{font-size:15px;color:var(--muted);border-left:1px solid #cdd7e4;padding-left:12px}nav{display:flex;align-items:center;gap:30px;font-size:15px;font-weight:550}nav a{padding-block:9px}.nav-download{color:var(--blue);border:1px solid #bed2ec;border-radius:6px;padding:8px 17px}nav a:hover{text-decoration:underline;text-underline-offset:6px}.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:65px;align-items:center;padding-block:77px 80px}.eyebrow{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--blue);font-weight:650;letter-spacing:1px;margin-bottom:22px}.rule{width:24px;height:2px;background:var(--blue)}h1{font-size:clamp(32px,3.4vw,46px);letter-spacing:-1.4px;font-weight:750;line-height:1.45;color:#14385f}.hero-description{font-size:17px;color:var(--muted);line-height:1.95;margin-top:26px}.actions{display:flex;align-items:center;gap:26px;margin-top:31px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;gap:27px;min-height:50px;padding:11px 21px;border-radius:6px;font-weight:600}.button.primary{background:var(--blue);color:#fff;box-shadow:0 5px 14px #0756b818}.button.primary:hover{background:#06489a}.text-link{font-weight:600;color:var(--blue);font-size:15px;display:inline-flex;align-items:center;gap:16px;min-height:44px}.text-link:hover{text-decoration:underline;text-underline-offset:5px}.hero-note{font-size:14px;color:#60748d;margin-top:22px;display:flex;gap:12px;flex-wrap:wrap}.hero-note span{color:#c1cdda}.workflow{border:1px solid #cddcee;border-radius:10px;box-shadow:0 20px 60px #153b6710;background:white;overflow:hidden}.workflow-heading{display:flex;justify-content:space-between;gap:10px;padding:17px 24px;font-size:14px;color:var(--deep);border-bottom:1px solid var(--line);background:#f6f9fd}.label{font-size:12px;white-space:nowrap;color:#61758d}.workflow blockquote{margin:22px 24px 8px;padding:0 0 0 16px;border-left:3px solid #1b68c1;font-size:17px;line-height:1.85;color:var(--deep);font-weight:550}.workflow ol{list-style:none;padding:10px 24px 18px;margin:0}.workflow li{display:flex;gap:16px;padding:13px 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.eyebrow{margin-bottom:14px}h2{font-size:clamp(27px,2.5vw,34px);letter-spacing:-.6px;color:var(--deep);font-weight:650}.section-heading>p{color:var(--muted);font-size:16px;margin-bottom:4px}.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px}.feature{padding:23px 0 18px;border-top:2px solid #1d62b4;display:flex;flex-direction:column}.feature-index{font-size:13px;letter-spacing:1px;color:#637c98}.feature h3{font-size:19px;margin-top:17px}.feature p{font-size:15px;line-height:1.85;color:var(--muted);margin-top:13px;flex:1}.feature-foot{font-size:13px;color:#526f90;margin-top:20px}.privacy-note{margin-top:34px;padding:22px 27px;border-left:3px solid #2974c8;background:var(--pale);display:grid;grid-template-columns:220px 1fr;gap:25px;align-items:center}.privacy-note strong{font-size:16px;font-weight:600}.privacy-note p{font-size:14px;color:var(--muted);line-height:1.9}.guide-section{background:#f5f8fc;border-block:1px solid 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h2{margin-bottom:15px}.skills-section .eyebrow{margin-bottom:12px}.skills-section p{font-size:16px;color:var(--muted);line-height:1.9}.skill-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:21px}.skill-tags span{padding:3px 11px;background:#fff;border:1px solid #ccdcf1;border-radius:4px;font-size:13px;color:#385f90}.skills-status{border-left:1px solid #ccdcf1;padding-left:42px}.skills-status p{margin:17px 0 8px;font-size:15px}.skills-status .status-label{background:#fff;border:1px solid #ccdcf1}.faq-section{max-width:900px}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{display:flex;justify-content:space-between;align-items:center;gap:20px;list-style:none;cursor:pointer;font-size:17px;font-weight:550;padding:23px 0}summary::-webkit-details-marker{display:none}summary>span{font-size:24px;font-weight:400;color:#557599;line-height:1;transition:transform .15s}details[open] summary>span{transform:rotate(45deg)}details>p{font-size:16px;color:var(--muted);padding:0 32px 23px 0;line-height:1.95}.site-footer{border-top:1px solid var(--line);background:#f7f9fc}.footer-inner{display:flex;justify-content:space-between;gap:32px;padding-block:34px}.footer-inner strong{font-size:18px;color:var(--deep)}.footer-inner p{font-size:14px;color:var(--muted);margin-top:4px}.footer-links{display:flex;align-items:center;flex-wrap:wrap;gap:27px;font-size:14px}.footer-links a{padding-block:8px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #dfe6f0;padding-block:17px;font-size:13px;color:#5b708a}
@media(min-width:1500px){.hero{padding-block:95px}.hero h1{font-size:48px}}
@media(max-width:1000px){.container{width:calc(100% - 48px)}nav{gap:18px}.brand>span{display:block}.brand>span>span{display:block;border:0;padding:0;font-size:13px}.brand strong{font-size:19px}.hero{gap:32px;padding-block:55px}.hero-description{font-size:16px}.desktop-break{display:none}.workflow-heading,.workflow-footer{padding-inline:19px}.workflow blockquote{margin-inline:19px;font-size:16px}.workflow ol{padding-inline:19px}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 35px}.guide-layout{gap:45px}.privacy-note{grid-template-columns:1fr;gap:9px}.skills-section{padding:32px;gap:26px}.skills-status{padding-left:26px}}
@media(max-width:700px){.container{width:calc(100% - 40px)}.header-inner{flex-wrap:wrap;gap:5px;padding-block:14px}.brand>span{display:flex;gap:9px;align-items:center}.brand>span>span{font-size:14px;border-left:1px solid var(--line);padding-left:9px}.brand img{width:38px;height:38px}.brand strong{font-size:18px}nav{width:100%;justify-content:space-between;gap:8px;font-size:14px;margin-top:10px}.nav-download{padding:6px 10px}.hero{grid-template-columns:1fr;gap:34px;padding-block:38px 40px}.hero h1{font-size:clamp(29px,7.8vw,43px);letter-spacing:-1px}.eyebrow{font-size:13px;margin-bottom:17px}.hero-description{font-size:16px;margin-top:20px}.actions{gap:20px;margin-top:23px}.hero-note{font-size:13px;gap:8px;margin-top:18px}.workflow{max-width:500px;width:100%}.principles-inner{padding-block:15px;font-size:13px;width:calc(100% - 20px)}.section{padding-block:48px}.section-heading{display:block;margin-bottom:25px}.section-heading>p{margin-top:18px;font-size:15px}.section-heading>.status-label{margin-top:16px}h2{font-size:28px}.feature-grid{gap:20px}.feature h3{font-size:18px}.feature p{font-size:15px}.feature-foot{line-height:1.9}.privacy-note{padding:20px;margin-top:23px}.guide-section{padding-block:45px}.guide-layout{grid-template-columns:1fr;gap:30px}.guide-layout .section-description{margin-top:15px}.guide-layout .text-link{margin-top:12px}.guide-steps li{gap:15px;padding-bottom:20px;margin-bottom:20px}.download-grid{grid-template-columns:1fr;gap:15px}.download-card{padding:23px}.download-card h3{font-size:21px}.download-description{margin-top:0}.availability{margin-block:17px 12px}.skills-section{grid-template-columns:1fr;padding:26px;gap:27px}.skills-status{border-left:0;border-top:1px solid #ccdcf1;padding:24px 0 0}.skills-section p{font-size:15px}.faq-section summary{font-size:16px;padding-block:20px}.faq-section details>p{font-size:15px;padding-right:10px}.footer-inner{flex-direction:column;gap:17px;padding-block:28px}.footer-links{gap:24px}.footer-bottom{font-size:12px;flex-wrap:wrap;gap:4px}}
@media(max-width:380px){.container{width:calc(100% - 32px)}.feature-grid{grid-template-columns:1fr}.hero-note{gap:5px;font-size:12px}nav{font-size:13px;gap:6px}.nav-download{padding-inline:8px}.principles-inner{font-size:12px}.actions{gap:14px}.button{padding-inline:16px;gap:14px}.skills-section{padding:23px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}summary>span{transition:none}}
.screenshot-disclosure{font-size:14px;color:var(--muted);border-left:3px solid #b9cce4;padding-left:15px;max-width:940px;margin-bottom:30px;line-height:1.9}.screenshot-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.screenshot-card{margin:0;min-width:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}.screenshot-card>a{display:block;background:#eaf0f7;line-height:0;border-bottom:1px solid var(--line)}.screenshot-card>a:hover{outline:2px solid #4281c7;outline-offset:-2px}.screenshot-card img{display:block;width:100%;height:auto}.screenshot-card figcaption{padding:23px 25px}.screenshot-card h3{font-size:20px;margin:8px 0 10px}.screenshot-card p{font-size:15px;line-height:1.85;color:var(--muted)}.screenshot-featured{grid-column:1/-1}.screenshot-featured figcaption{max-width:850px}.difference-section{background:#f2f6fc;border-block:1px solid var(--line);padding-block:65px}.comparison-intro{max-width:940px;color:var(--muted);font-size:17px;line-height:1.9;margin-bottom:32px}.difference-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 60px}.difference-grid article{border-top:1px solid #c4d4e9;padding-top:20px}.difference-grid article>span{font-size:14px;color:#466b98}.difference-grid h3{font-size:22px;margin:9px 0 12px;color:var(--deep)}.difference-grid p{font-size:16px;color:var(--muted);line-height:1.9}.comparison-note{font-size:13px;line-height:1.9;color:#5a6e88;margin-top:30px}.comparison-note a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
@media(max-width:700px){.screenshot-grid{grid-template-columns:1fr;gap:22px}.screenshot-card figcaption{padding:19px}.screenshot-card h3{font-size:19px}.screenshot-disclosure{font-size:13px}.difference-section{padding-block:44px}.difference-grid{grid-template-columns:1fr;gap:25px}.comparison-intro{font-size:16px}.difference-grid h3{font-size:20px}.difference-grid p{font-size:15px}}
.free-offer{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;margin:18px 0 24px}.free-offer strong{display:inline-block;background:#1856a3;color:#fff;border-radius:7px;padding:8px 18px;font-size:23px;line-height:1.5;letter-spacing:.04em}.free-offer>span{color:#435b79;font-size:14px;line-height:1.8;max-width:30em}.hero-note a{text-decoration:underline;text-underline-offset:4px}@media(max-width:700px){.free-offer{align-items:flex-start;flex-direction:column;gap:8px}.free-offer strong{font-size:21px}}