:root{
  --bg:hsl(43 34% 97%);--surface:hsl(43 45% 100%);--surface-2:hsl(43 40% 93%);
  --text:hsl(43 42% 13%);--muted:hsl(43 17% 39%);--accent:hsl(98 72% 42%);
  --accent-2:hsl(43 70% 45%);--line:hsl(43 24% 72% / .55);--button-text:hsl(0 0% 100%);
  --radius:20px;--shadow:0 24px 70px hsl(220 42% 20% / .10);--font:"Trebuchet MS","Microsoft YaHei UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100dvh;color:var(--text);background:var(--bg);font-family:var(--font);line-height:1.72}
body::before{content:"";position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at top right, color-mix(in srgb, var(--accent-2) 20%, transparent), transparent 45%);opacity:.72;z-index:-1}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.shell{width:min(1180px,calc(100% - 36px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(18px)}
.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:21px;font-weight:900;white-space:nowrap}
.brand img{width:34px;height:34px;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:20px;font-size:14px;font-weight:700;white-space:nowrap}
.nav-links a:hover{color:var(--accent)}
.cta,.secondary,.platform-download{display:inline-flex;align-items:center;justify-content:center;min-width:132px;min-height:48px;padding:0 22px;border:1px solid transparent;border-radius:calc(var(--radius) + 18px);font-weight:900;white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb;transition:transform .22s ease,box-shadow .22s ease}
.cta,.platform-download{color:var(--button-text);background:var(--accent);box-shadow:0 12px 34px color-mix(in srgb,var(--accent) 26%,transparent)}
.secondary{border-color:var(--line);background:var(--surface);color:var(--text)}
.cta:hover,.secondary:hover,.platform-download:hover{transform:translateY(-2px)}
.cta:active,.secondary:active,.platform-download:active{transform:translateY(1px)}
a:focus-visible,summary:focus-visible{outline:3px solid var(--accent-2);outline-offset:4px}
.hero{padding:clamp(38px,6vw,76px) 0}
.hero-layout{min-height:calc(100dvh - 150px);display:grid;grid-template-columns:minmax(0,1.02fr) minmax(320px,.98fr);align-items:center;gap:clamp(30px,6vw,76px)}
.hero-copy{text-align:left}
.hero-copy h1{max-width:14ch;margin:0 0 20px;font-size:clamp(40px,6vw,74px);line-height:1.06;letter-spacing:-.045em}
.hero-copy p{max-width:640px;margin:0 0 28px;color:var(--muted);font-size:clamp(17px,2vw,20px)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.platforms{margin-top:24px;color:var(--muted);font-size:14px;font-weight:700}
.hero-media{position:relative;align-self:center;min-width:0;padding:0;margin:0;overflow:visible;transform:none}
.hero-media::before{content:"";position:absolute;inset:8% -4% -4% 8%;border-radius:calc(var(--radius) * 2 + 20px);background:color-mix(in srgb,var(--accent) 17%,var(--surface));z-index:-1}
.layout-1 .hero-layout,.layout-6 .hero-layout{grid-template-columns:minmax(320px,.92fr) minmax(0,1.08fr)}
.layout-1 .hero-media,.layout-6 .hero-media{order:-1}
.layout-2 .hero-layout,.layout-7 .hero-layout{grid-template-columns:1fr;text-align:center}
.layout-2 .hero-copy,.layout-7 .hero-copy{max-width:920px;margin:auto;text-align:center}
.layout-2 .hero-copy h1,.layout-7 .hero-copy h1,.layout-2 .hero-copy p,.layout-7 .hero-copy p{margin-left:auto;margin-right:auto}
.layout-2 .hero-actions,.layout-7 .hero-actions{justify-content:center}
.layout-2 .hero-media,.layout-7 .hero-media{max-width:760px;margin-inline:auto}
.layout-3 .hero-layout,.layout-8 .hero-layout{grid-template-columns:minmax(0,1.16fr) minmax(280px,.84fr)}
.layout-3 .hero-copy,.layout-8 .hero-copy{padding-left:clamp(0px,7vw,96px)}
.layout-4 .hero-layout,.layout-9 .hero-layout{grid-template-columns:minmax(280px,.78fr) minmax(0,1.22fr)}
.layout-4 .hero-copy,.layout-9 .hero-copy{order:2}
.layout-4 .hero-media,.layout-9 .hero-media{order:1}
.section{padding:clamp(64px,9vw,118px) 0}
.section h2{max-width:18ch;margin:0 0 16px;font-size:clamp(30px,4.4vw,54px);line-height:1.12;letter-spacing:-.032em}
.section-intro{max-width:68ch;margin:0 0 34px;color:var(--muted)}
.surface{border:1px solid var(--line);border-radius:calc(var(--radius) + 10px);background:color-mix(in srgb,var(--surface) 94%,transparent);box-shadow:var(--shadow)}
.capability-grid{display:grid;grid-template-columns:1.35fr .65fr 1fr;gap:16px}
.capability-card{min-height:210px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.capability-card:nth-child(2){background:var(--surface-2)}
.capability-card:nth-child(3){background:color-mix(in srgb,var(--accent) 13%,var(--surface))}
.capability-card:nth-child(4){grid-column:span 2}
.capability-card h3{margin:0 0 10px;font-size:24px}
.capability-card p{margin:0;color:var(--muted)}
.proof-strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--surface)}
.proof-item{padding:28px;border-right:1px solid var(--line)}
.proof-item:last-child{border-right:0}
.proof-item strong{display:block;margin-bottom:7px;font-size:20px}
.proof-item span{color:var(--muted);font-size:14px}
.split{display:grid;grid-template-columns:.92fr 1.08fr;align-items:center;gap:clamp(28px,7vw,84px)}
.split.reverse{grid-template-columns:1.08fr .92fr}
.split.reverse .visual{order:2}
.visual{padding:0;margin:0;align-self:center}
.visual img{display:block;width:100%;height:auto;object-fit:contain}
.scenario-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.scenario{padding:20px;border-left:4px solid var(--accent);background:var(--surface)}
.scenario h3{margin:0 0 6px}
.scenario p{margin:0;color:var(--muted)}
.article-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:16px}
.article{min-height:230px;padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.article:first-child{background:color-mix(in srgb,var(--accent-2) 12%,var(--surface))}
.article h3{margin:0 0 12px;font-size:22px}
.article p{margin:0;color:var(--muted)}
.feedback{display:grid;grid-template-columns:1fr 1.4fr .8fr;gap:16px}
.feedback article{padding:26px;border-top:4px solid var(--accent);background:var(--surface)}
.feedback h3{margin:0 0 10px}
.feedback p{margin:0;color:var(--muted)}
.faq-stack{display:grid;gap:12px}
details{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:0 22px}
summary{cursor:pointer;list-style:none;padding:20px 0;font-weight:900}
details p{margin:0 0 22px;color:var(--muted)}
.final-cta{display:grid;grid-template-columns:1fr auto;align-items:center;gap:28px;padding:clamp(28px,6vw,58px);border-radius:calc(var(--radius) + 14px);background:var(--accent);color:var(--button-text)}
.final-cta h2{margin:0 0 8px;color:inherit}
.final-cta p{margin:0;opacity:.84}
.final-cta .cta{background:var(--surface);color:var(--text)}
.platform-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.platform-card{display:flex;min-width:0;flex-direction:column;justify-content:space-between;gap:18px;padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.platform-card h3{margin:0;font-size:20px}
.platform-card p{margin:8px 0 0;color:var(--muted);font-size:14px}
.platform-download{width:100%;min-width:0;padding-inline:14px}
.step-grid,.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step,.help-card{padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.step h3,.help-card h3{margin:0 0 10px}
.step p,.help-card p{margin:0;color:var(--muted)}
.compat{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.compat article{padding:28px;background:var(--surface);border-left:5px solid var(--accent)}
.compat h3{margin:0 0 10px}
.compat p{margin:0;color:var(--muted)}
.site-footer{margin-top:40px;padding:48px 0 26px;border-top:1px solid var(--line);background:color-mix(in srgb,var(--surface-2) 74%,var(--bg))}
.footer-grid{display:grid;grid-template-columns:1.3fr .7fr .7fr;gap:32px}
.footer-grid h2,.footer-grid h3{margin-top:0}
.footer-grid p,.footer-grid a{color:var(--muted)}
.footer-grid a{display:block;margin:7px 0}
.copyright{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
@media(max-width:920px){
  .nav{padding:13px 0;flex-wrap:wrap}.nav-links{order:3;width:100%;overflow-x:auto;padding-bottom:5px}
  .hero-layout,.layout-1 .hero-layout,.layout-3 .hero-layout,.layout-4 .hero-layout,.layout-6 .hero-layout,.layout-8 .hero-layout,.layout-9 .hero-layout,.split,.split.reverse{grid-template-columns:1fr}
  .layout-1 .hero-media,.layout-4 .hero-media,.layout-6 .hero-media,.layout-9 .hero-media,.split.reverse .visual{order:initial}
  .hero-copy,.layout-3 .hero-copy,.layout-8 .hero-copy{padding-left:0;text-align:left}
  .capability-grid,.article-grid,.feedback{grid-template-columns:1fr 1fr}
  .capability-card:nth-child(4){grid-column:span 1}
  .proof-strip{grid-template-columns:1fr 1fr}.proof-item:nth-child(2){border-right:0}.proof-item{border-bottom:1px solid var(--line)}
  .platform-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .shell{width:min(100% - 24px,1180px)}.nav>.cta{display:none}.hero-layout{min-height:auto}
  .hero-copy h1{font-size:clamp(38px,13vw,58px)}.hero-actions{display:grid;grid-template-columns:1fr}
  .hero-actions a{width:100%}.capability-grid,.article-grid,.feedback,.proof-strip,.scenario-list,.step-grid,.help-grid,.compat,.footer-grid{grid-template-columns:1fr}
  .proof-item{border-right:0}.platform-grid{grid-template-columns:1fr}
  .platform-card{display:grid;grid-template-columns:1fr auto;align-items:center}
  .platform-download{min-width:150px}.final-cta{grid-template-columns:1fr}.final-cta .cta{width:100%}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.cta,.secondary,.platform-download{transition:none}}
.hero-layout{align-items:center}
.hero-media{align-self:center;height:auto;padding:0;margin-top:0;margin-bottom:0;overflow:visible;transform:none}
.hero-media img{display:block;width:100%;height:auto;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none;transform:none}

/* layout-redesign-v3:start */
/* unique-layout: 34; hero-family: 3; flow-family: 3 */
.design-034 .nav{min-height:80px}.design-034 .nav-links{gap:32px}.design-034 .brand img{width:42px;height:42px}
.design-034 .hero{padding-top:24px}
.design-034 .hero-layout{grid-template-columns:minmax(0,.82fr) minmax(420px,1.18fr);gap:clamp(24px,4vw,58px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.design-034 .hero-copy{padding-block:clamp(36px,7vw,88px)}
.design-034 .hero-copy h1{max-width:17ch;font-size:clamp(38px,4.8vw,62px);letter-spacing:-.025em}
.design-034 .hero-media{justify-self:end;max-width:720px}
.design-034 main>.section.shell{width:100%;padding-inline:max(18px,calc((100vw - 1180px)/2))}
.design-034 main>.section:nth-of-type(odd){background:color-mix(in srgb,var(--surface-2) 62%,transparent)}
.design-034 main>.section:nth-of-type(even){background:color-mix(in srgb,var(--surface) 74%,transparent)}
.design-034 .capability-grid{grid-template-columns:repeat(4,1fr)}
.design-034 .capability-card:nth-child(4){grid-column:auto}
.design-034 .article-grid,.design-034 .feedback{grid-template-columns:repeat(3,1fr)}
.design-034 .footer-grid{grid-template-columns:.9fr 1.1fr 1fr}
@media(max-width:920px){
  .design-034 .hero-layout,.design-034 main>.section:nth-of-type(2n){grid-template-columns:1fr}
  .design-034 .hero-copy,.design-034 .hero-media{order:initial;padding-left:0;padding-right:0}
  .design-034 main>.section:nth-of-type(2n)>h2,.design-034 main>.section:nth-of-type(2n)>.section-intro,.design-034 main>.section:nth-of-type(2n)>div{grid-column:1;grid-row:auto}
  .design-034 .capability-grid,.design-034 .article-grid,.design-034 .feedback,.design-034 .platform-grid{grid-template-columns:1fr 1fr}
  .design-034 .capability-card,.design-034 .article,.design-034 .feedback article{grid-column:auto;grid-row:auto;min-height:0}
}
@media(max-width:640px){
  .design-034 .site-header{top:0;width:100%;border-radius:0;margin:0}
  .design-034 .hero-layout,.design-034 .capability-grid,.design-034 .article-grid,.design-034 .feedback,.design-034 .platform-grid,.design-034 .scenario-list,.design-034 .help-grid,.design-034 .step-grid{grid-template-columns:1fr}
  .design-034 .hero-copy{text-align:left}
  .design-034 .hero-copy h1,.design-034 .hero-copy p{margin-left:0;margin-right:0}
  .design-034 .hero-actions{justify-content:flex-start}
  .design-034 .section{margin-left:auto;margin-right:auto;padding-left:18px;padding-right:18px;border-radius:0}
  .design-034 .proof-item{grid-template-columns:1fr}
}
.design-034 .hero-layout{align-items:center}
.design-034 .hero-media{align-self:center;height:auto;padding:0;margin-top:0;margin-bottom:0;overflow:visible;transform:none}
.design-034 .hero-media img{display:block;width:100%;height:auto;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none;transform:none}
/* layout-redesign-v3:end */

/* image-safety-v1:start */
.hero-layout{align-items:center}
.hero-copy{position:relative;z-index:1}
.hero-media{position:relative;z-index:0;align-self:center;height:auto;padding:0;margin-top:0;margin-bottom:0;overflow:visible;transform:none;opacity:1;filter:none;mix-blend-mode:normal}
.hero-media img{display:block;width:100%;height:auto;min-width:0;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none;transform:none;opacity:1;filter:none;mix-blend-mode:normal;image-rendering:auto}
.hero-v4 .hero-layout{grid-template-columns:minmax(0,1fr) minmax(360px,1fr);min-height:72dvh}
.hero-v4 .hero-copy,.hero-v4 .hero-media{grid-area:auto;align-self:center}
.hero-v4 .hero-media{max-width:720px;justify-self:end}
.visual{position:relative;align-self:center;height:auto;padding:0;margin-top:0;margin-bottom:0;overflow:visible;transform:none;opacity:1;filter:none}
.visual img{display:block;width:100%;height:auto;min-width:0;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none;transform:none;opacity:1;filter:none;mix-blend-mode:normal;image-rendering:auto}
@media(max-width:920px){
  .hero-v4 .hero-layout{grid-template-columns:1fr;min-height:auto}
  .hero-v4 .hero-media{justify-self:center}
}
@media(max-width:640px){
  html,body{max-width:100%;overflow-x:clip}
  body[class] .hero-layout{width:calc(100% - 24px);max-width:calc(100% - 24px);min-width:0;margin-inline:auto;padding-left:0;padding-right:0;gap:32px}
  body[class] .hero-copy,body[class] .hero-media,body[class] .visual{width:100%;max-width:100%;min-width:0;margin-left:0;margin-right:0}
  body[class] .hero-copy h1{width:100%;max-width:100%;font-size:clamp(34px,11vw,44px);overflow-wrap:anywhere;word-break:normal}
  body[class] .hero-copy p{width:100%;max-width:100%;font-size:16px;overflow-wrap:anywhere}
  body[class] .hero-media,body[class] .visual{justify-self:stretch}
  body[class] .hero-media img,body[class] .visual img{width:100%;max-width:100%;height:auto}
}
/* image-safety-v1:end */