:root{color-scheme:dark;--bg:#0c1526;--panel:#121f34;--text:#f1f5fc;--muted:#9cacc2;--line:#26364e;--accent:#72e3d0}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.75}a{color:inherit;text-decoration:none}button,a,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:6px}.container{width:min(1180px,calc(100% - 64px));margin:auto}.header{position:sticky;top:0;z-index:10;background:#0c1526ed;backdrop-filter:blur(16px);border-bottom:1px solid #ffffff0d}.nav{height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-size:22px;letter-spacing:-.7px;font-weight:750;white-space:nowrap}.brand>span:not(.brand-icon){color:var(--accent)}.brand-icon{display:inline-grid;place-items:center;width:34px;height:34px;margin-right:10px;background:var(--accent);color:var(--bg);border-radius:9px;font-size:28px;vertical-align:middle}nav{display:flex;gap:30px;font-size:14px;color:#b6c2d3}nav a:hover,.footer a:hover{color:var(--accent)}.button{display:inline-flex;align-items:center;justify-content:center;gap:27px;padding:14px 25px;border-radius:7px;background:var(--accent);color:#092a29;font-weight:700;font-size:15px;transition:transform .2s,background .2s}.button:hover{background:#a3f4e7;transform:translateY(-2px)}.button.secondary{border:1px solid #41516a;background:transparent;color:var(--text)}.button.secondary:hover{background:#1b2c45}.button.small{padding:9px 18px;font-size:13px;gap:18px}.hero{overflow:hidden;padding:70px 0 0;text-align:center;background:radial-gradient(ellipse at 50% 18%,#173b4b80,transparent 56%)}.eyebrow{color:var(--accent);font-size:11px;font-weight:650;letter-spacing:2px;margin:0 0 20px}.hero .eyebrow{display:inline-flex;align-items:center;gap:10px;border:1px solid #72e3d030;border-radius:25px;background:#72e3d008;padding:7px 17px;letter-spacing:1.5px}.status-dot{width:6px;height:6px;background:var(--accent);border-radius:50%;box-shadow:0 0 12px #72e3d0}h1{font-size:clamp(40px,5.4vw,70px);line-height:1.2;letter-spacing:-2.5px;margin:10px 0 23px;font-weight:750}.gradient-text{background:linear-gradient(100deg,#84ebd1,#84bcff);background-clip:text;color:transparent}.hero-copy{color:var(--muted);font-size:17px;line-height:1.9}.actions{display:flex;justify-content:center;gap:14px;margin:28px 0 20px}.hero-tags{display:flex;justify-content:center;gap:24px;color:#8ca0b7;font-size:12px}.hero-tags span:before{content:'✓';color:var(--accent);margin-right:7px}.preview{margin-top:48px;border:1px solid #344965;border-radius:12px;overflow:hidden;box-shadow:0 30px 70px #0005;background:#162339}.preview-bar{display:flex;align-items:center;justify-content:space-between;padding:13px 20px;font-size:11px;color:#a8b5c7}.window-dots{color:#5c708c;letter-spacing:5px}.preview-label{border:1px solid #3e516b;border-radius:4px;padding:1px 8px}.preview img{display:block;width:100%;height:auto}.preview-caption{display:flex;justify-content:space-around;gap:10px;padding:14px;font-size:11px;color:#b5c3d6}.preview-caption b{color:var(--accent);margin-left:15px}.cyan-dot,.orange-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#72e3d0;margin-right:8px}.orange-dot{background:#ffb660}.format-strip{display:flex;justify-content:center;gap:30px;align-items:center;padding:32px 0;border-bottom:1px solid var(--line);font-size:13px;color:#7f93ab}.format-strip strong{color:#b6c5d8;font-weight:500}.section{padding-top:96px;padding-bottom:96px}h2{font-size:clamp(28px,3vw,39px);line-height:1.45;letter-spacing:-1px;margin:0 0 22px}h3{font-size:19px;line-height:1.5;margin:16px 0 12px}p{color:var(--muted);font-size:14px;margin:0 0 18px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:70px;margin-bottom:36px}.section-heading>p{max-width:365px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{border:1px solid var(--line);border-radius:10px;padding:30px;background:linear-gradient(145deg,#17253b,#111e31)}.feature-icon{color:var(--accent);font-size:11px;letter-spacing:2px}.card p{min-height:99px}.card-foot{display:block;border-top:1px solid var(--line);padding-top:18px;font-size:11px;color:#7c93ad}.export-feature{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:center;margin-top:85px}.export-feature p{max-width:430px}.export-feature figure{margin:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--panel)}.export-feature img{display:block;width:100%;height:auto}.export-feature figcaption{padding:13px 20px;font-size:11px;color:#92a7c0}.check-list{padding:0;list-style:none;font-size:13px;color:#bdcbdc;line-height:2.6}.check-list li:before{content:'✓';color:var(--accent);margin-right:10px}.fine-print{font-size:11px!important;color:#91a4bd!important}.workflow-section{background:#111e30;border-block:1px solid var(--line)}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:35px;margin-top:45px}.steps article{border-top:1px solid #3d536d;padding-top:24px}.steps article>span{font-size:31px;color:var(--accent);font-weight:350}.steps h3{font-size:17px}.steps p{font-size:13px}.download-panel{display:flex;justify-content:space-between;align-items:center;gap:35px;padding:48px;border:1px solid #416c73;border-radius:12px;background:radial-gradient(ellipse at 100% 0,#214b5266,transparent 70%),#142b36}.download-panel h2{font-size:32px}.download-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:11px;color:#abc6ce}.download-meta span{border:1px solid #34515d;padding:2px 10px;border-radius:4px}.download-action{text-align:center;flex-shrink:0}.download-action .button{margin-bottom:15px}.download-action p{margin-bottom:5px}.license-section{display:grid;grid-template-columns:1fr 1fr;gap:70px;padding-bottom:90px;border-bottom:1px solid var(--line)}.license-section .button{margin:8px 0 12px}.license-steps{list-style:none;padding:0;margin:0}.license-steps li{display:flex;gap:20px;margin-bottom:23px}.license-steps li>span{display:grid;place-items:center;flex-shrink:0;width:36px;height:36px;border:1px solid #3c536e;border-radius:50%;color:var(--accent);font-size:13px}.license-steps h3{margin:0 0 6px;font-size:16px}.license-steps p{font-size:13px;margin:0}.faq-section{display:grid;grid-template-columns:.65fr 1.35fr;gap:70px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;list-style:none;position:relative;padding:21px 35px 21px 0;font-size:15px;font-weight:600}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:'+';position:absolute;right:0;color:var(--accent);font-size:21px;font-weight:400}.faq-list details[open] summary:after{content:'−'}.faq-list details p{font-size:13px;padding-right:28px;padding-bottom:10px}.footer{border-top:1px solid var(--line);padding:32px 0;display:flex;align-items:center;justify-content:space-between;gap:20px}.footer p{font-size:12px;margin:0}.footer>a:last-child{font-size:12px;color:var(--muted)}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);padding:14px 24px;max-width:90%;width:max-content;background:#e0fff7;color:#143e35;border-radius:8px;box-shadow:0 5px 30px #0005;z-index:20;font-size:14px}[hidden]{display:none!important}@media(min-width:1500px){.hero{padding-top:90px}}@media(max-width:900px){nav{gap:15px;font-size:12px}.brand{font-size:19px}.container{width:calc(100% - 40px)}.section-heading{gap:30px}.card{padding:23px}.export-feature{gap:30px}.download-panel{padding:30px}.steps{gap:22px}.license-section,.faq-section{gap:35px}.format-strip{gap:18px}}@media(max-width:650px){html{scroll-padding-top:75px}.container{width:calc(100% - 32px)}.nav{height:68px;gap:10px}.nav nav{display:none}.brand{font-size:19px}.brand-icon{width:28px;height:28px;font-size:24px;margin-right:5px}.button.small{font-size:11px;padding:8px 11px;gap:10px}.hero{padding-top:45px}h1{letter-spacing:-1.5px}.hero-copy{font-size:14px}.hero-copy br{display:none}.actions{gap:10px}.button{font-size:13px;padding:12px 16px;gap:12px}.hero-tags{gap:13px;font-size:10px}.preview{margin-top:32px}.preview-bar{padding:10px;font-size:9px}.preview-caption{font-size:9px;padding:10px 5px}.preview-caption>span:nth-child(2){display:none}.format-strip{flex-wrap:wrap;gap:10px 15px;font-size:11px;padding:23px 0}.format-strip>span:first-child{width:100%;text-align:center}.section{padding-block:60px}.section-heading{display:block}.section-heading>p{max-width:none}.feature-grid{grid-template-columns:1fr;gap:12px}.card p{min-height:0}.card{padding:25px}.export-feature{grid-template-columns:1fr;margin-top:55px;gap:24px}.steps{grid-template-columns:1fr 1fr;gap:22px}.steps article{padding-top:15px}.download-panel{flex-direction:column;align-items:stretch;padding:28px}.download-panel h2{font-size:28px}.download-action{text-align:left}.license-section{grid-template-columns:1fr;gap:30px;padding-bottom:55px}.faq-section{grid-template-columns:1fr;gap:12px}.footer{flex-wrap:wrap;padding-block:25px}.footer .brand{font-size:18px}.footer p{font-size:10px}.footer>a:last-child{font-size:10px}.eyebrow{font-size:10px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Refined vector icon system */
.ui-icon{width:19px;height:19px;display:inline-block;flex-shrink:0;vertical-align:-4px}.brand-icon{width:38px;height:38px;background:linear-gradient(145deg,#234651,#13243b);color:#93eadb;border:1px solid #72e3d04d;border-radius:11px;box-shadow:inset 0 1px 0 #ffffff18,0 4px 14px #0003}.brand-icon svg{width:30px;height:30px}.feature-heading{display:flex;align-items:center;gap:16px;margin-bottom:23px}.icon-tile{display:grid;place-items:center;width:48px;height:48px;border-radius:13px;border:1px solid #72e3d038;background:linear-gradient(135deg,#72e3d018,#84bcff08);box-shadow:inset 0 1px 0 #ffffff10;color:#9be8da}.icon-tile .ui-icon{width:25px;height:25px;stroke-width:1.4}.card{transition:border-color .25s,box-shadow .25s}.card:hover{border-color:#547783;box-shadow:0 10px 28px #0002}.hero-tags span{display:inline-flex;align-items:center;gap:8px}.hero-tags span:before{content:none}.hero-tags .ui-icon{width:14px;height:14px;color:#92cbbf}.button .ui-icon{width:18px;height:18px;stroke-width:1.8}.footer>a:last-child,.back-link{display:inline-flex;align-items:center;gap:8px}.footer .ui-icon,.back-link .ui-icon{width:15px;height:15px}.card-top .ui-icon{width:17px;height:17px}.privacy-note>.ui-icon{color:var(--accent);width:18px;height:18px;margin-top:3px}.download-again .ui-icon{width:15px;height:15px;margin-left:6px}@media(max-width:650px){.brand-icon{width:32px;height:32px;border-radius:9px}.brand-icon svg{width:26px;height:26px}.hero-tags{gap:11px}.hero-tags span{gap:5px}.hero-tags .ui-icon{width:12px;height:12px}}

.author-contact{font-size:13px;margin-top:16px}.author-contact a{color:var(--accent);text-decoration:underline;text-underline-offset:4px}

.author-email{color:var(--accent);user-select:all;overflow-wrap:anywhere}.footer-contact{display:flex;flex-direction:column;gap:5px}.footer-contact p{margin:0}